JP4769745B2 - Rice cooked food packaging material and method for producing inner film of cooked rice processed food packaging material - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a packaged food for cooked rice food that is packaged in a state where a sheet-like food and a cooked rice processed food are separated, and a method for producing an inner film of the packaged food for cooked rice food.

  Conventionally, as a packaging material for wrapping cooked rice processed foods such as rice balls sold at convenience stores and supermarkets, the outer film is formed so as to be separable in the width direction, and is superimposed on the outer film via the sheet-like food, 2. Description of the Related Art It is known that an outer film is formed so as to be separable in the same direction as the outer film, and the outer film and the inner film are sealed so as to surround the sheet-like food.

  The outer film is attached so as to extend in a direction perpendicular to the direction in which the strip-shaped cut tape is divided into one surface, and can be divided into two by pulling the cut tape. On the other hand, the inner film is arranged in parallel in a state where two independent separation films are overlapped at one end, and the overlapping portion is weakly sealed linearly.

  The packaged food for cooked rice food having the above-described configuration is configured such that the cooked rice cooked food is wrapped on the inner film and then wrapped. Then, the packaged food for cooked rice is divided into two pieces that constitute the inner film while the outer film is separated from each other by pulling the outer film in the width direction after the outer film is divided in half. The cooked rice cooked food and the sheet-shaped food separated by the inner film (two separated films) are integrated so that the film is peeled off at a weakly sealed portion and separated from each other.

  The packaged food for cooked rice with the above structure is composed of two separation films in which the inner film is weakly sealed at the overlapping portion, so that the inner film can be separated as described above, but in the packaging state. Moisture (moisture) of cooked rice food does not enter between the two separated films (overlapping part), and the original texture and taste of sheet foods such as laver and thin baked eggs can be maintained in a good state it can.

  However, when the two separation films are weakly sealed linearly as described above, the pulling force when the outer film is pulled in the width direction acts as a result of being distributed to the weak seals. As a case where the separation film) cannot be smoothly separated, a seal line for welding two separation films formed in a sawtooth shape or a wave shape is provided (for example, see Patent Document 1).

Such a packaged food for cooked rice food has a sealing line for welding two separated films formed in a sawtooth shape or a wave shape, so that the tensile force when the outer film is divided in the width direction is pulled to the sealing line. It acts on each of a plurality of top portions formed on the top so that the two separation films can be smoothly peeled off.
Japanese Patent No. 3853775

  As described above, the conventional packaged food for cooked rice can prevent the inflow of moisture from the cooked rice food, can maintain the original texture and taste of the sheet food, and can be easily opened. However, there is also a need for a novel and innovative packaged food for cooked rice, which is different from conventional packaged food for cooked rice.

  Therefore, the present invention prevents the inflow of moisture from the cooked rice processed food, can maintain the original texture and taste of the sheet-like food, and can be easily opened for a novel and novel cooked rice processed food It is an object of the present invention to provide a method for producing an inner film of a packaged food for cooked rice food that can provide the packaged material for processed rice cooked food while providing the packaged material.

  The packaged food for cooked rice food according to the present invention includes an outer film formed so as to be separable in the width direction and an outer film that is superimposed on the outer film via a sheet-like food and is formed so as to be separable in the same direction as the outer film. A packaged food for cooked rice, wherein the outer film and the inner film are sealed so as to surround the sheet-like food, and the inner film is two separation films arranged in parallel in the separation direction. The one separation film includes a mountain fold portion in which a bent ridge line is formed and a pair of first opposed portions that extend from the mountain fold portion and face each other, while the other separation film has one separation film. A pair of first folds facing each other by folding back both sides of the valley fold so as to form a valley fold where the mountain fold of the film is fitted and a ridge line extending in the same direction or substantially the same direction as the fold of the valley fold. Two opposing parts In the two separation films, the mountain fold portion and the valley fold portion are sealed over the entire length or substantially the entire length in the intersecting direction with respect to the separation direction, and the mountain fold portion and the valley fold portion face each other. It is formed directly or indirectly over the entire length or substantially the entire length in the crossing direction, including an area where an easy peel area to which easy peel properties are imparted is sealed, on at least one of the surfaces. And Here, the “seal” includes not only welding by heat sealing or ultrasonic sealing but also adhesion through an adhesive. “Easy peelability” refers to the part joined by the seal. Refers to the property of facilitating peeling.

  According to the packaging material for cooked rice processed food, when the pair of first opposing portions in one separation film and the pair of second opposing portions in the other separation film are pulled in the separating direction, the pair of second opposing portions Due to the pulling force against the folds, the two sides of the folds in the valley folds rise in order toward the second facing part with respect to the mountain folds facing each other. That is, when the pair of first facing portions and the pair of second facing portions are pulled in the separating direction, the ridge line formed at the boundary between the valley folding portion and the second facing portion is shifted to the fold side of the valley folding portion. In addition, the valley folding part is turned back to the second facing part side in order.

  And in the sealed part in the easy peel area, the easy peel property is imparted, so that the valley folds smoothly swells (peels off) from the mountain folds, and the two separation films are easily and smoothly formed. Can be separated. Thereby, as a result of dividing both the outer film and the inner film into two parts, the sheet-like food is exposed and the cooked rice food and the sheet-like food can be integrated. And, since the two separated films are sealed over the entire length in the crossing direction or substantially the entire length with respect to the separating direction, the packaged food for cooked rice processed food is processed from the cooked rice processed food between the two separated films. The moisture does not reach the sheet-like food, and the original texture and taste of the sheet-like food can be maintained.

  As one embodiment of the present invention, the two separation films are preferably sealed on both sides of the fold line of the mountain fold part and the fold line of the valley fold part. If it does in this way, two sheets of separation films can be connected, improving airtightness. Also, when opening, both sides of the crease in the valley fold rise almost uniformly from the mountain fold, so by sealing on both sides of the crease, when a tensile force is applied to the two separated films, Both sides can be lifted off from the mountain fold with good balance. That is, the tensile force applied to the two separation films is not biased to any one side of the fold line at the fold line, and the tensile force does not act on both sides of the fold line and the fold line. The portion (one separation film) can be uniformly peeled from the mountain fold portion (the other separation film).

In at least one of two separate films, strip easy peel film granted the easy peel properties on at least one surface thereof, the granted surface of said the Easy peelability of the mating separating film The easy peel area may be indirectly formed. If it does in this way, even if it employ | adopts the film which does not have easy peel property for a separation film, easy peel property can be provided easily.

  As another form, at least one of the two separation films may be formed with the easy peel region by applying a part coat imparting easy peel properties. Even if it does in this way, an easy peel property can be provided easily.

  Moreover, the packaged food for cooked rice food according to the present invention is formed so as to be separated in the same direction as the outer film, overlaid on the outer film through the sheet-shaped food and the outer film formed to be separable in the width direction. In the packaged food for cooked rice food, wherein the outer film and the inner film are sealed so as to surround the sheet-like food, the inner film is separated into two pieces arranged in parallel in the separating direction One separation film includes a mountain fold portion in which a bent ridge line is formed and a pair of first opposed portions that extend from the mountain fold portion and face each other, while the other separation film is one side A pair of the folded folded portions facing each other so as to form a valley folded portion into which the mountain folded portions of the separation film are fitted and a ridge line extending in the same direction or substantially the same direction as the fold line of the valley folded portion. Second of Includes a direction section, and two of the separating film is characterized in that a peak fold portion and the valley portion is weak seal over the entire length or substantially the entire length in the transverse direction relative to the separating direction. The term “weak seal” as used herein includes not only welding by heat sealing or ultrasonic sealing, but also adhesion via an adhesive, and means that welding or bonding is performed so that the joint portion is easily peeled off. Say.

  According to the packaging material for cooked rice processed food, when the pair of first opposing portions in one separation film and the pair of second opposing portions in the other separation film are pulled in the separating direction, the pair of second opposing portions Due to the pulling force against the folds, the two sides of the folds in the valley folds rise in order toward the second facing part with respect to the mountain folds facing each other. That is, when the pair of first facing portions and the pair of second facing portions are pulled in the separating direction, the ridge line formed at the boundary between the valley folding portion and the second facing portion is shifted to the fold side of the valley folding portion. In addition, the valley folding part is turned back to the second facing part side in order.

  And in the weakly sealed part, a valley fold part rolls up smoothly from a mountain fold part (peeling), and can isolate | separate two separation films easily and smoothly. Thereby, as a result of dividing both the outer film and the inner film into two parts, the sheet-like food is exposed and the cooked rice food and the sheet-like food can be integrated. And, since the two separated films are sealed over the entire length in the crossing direction or substantially the entire length with respect to the separating direction, the packaged food for cooked rice processed food is processed from the cooked rice processed food between the two separated films. The moisture does not reach the sheet-like food, and the original texture and taste of the sheet-like food can be maintained.

  As one embodiment of the present invention, the two separation films are preferably weakly sealed on both sides of the fold line of the mountain fold part and the fold line of the valley fold part. If it does in this way, two sheets of separation films can be connected, improving airtightness. Also, since both sides of the crease in the valley fold rise almost uniformly from the mountain fold at the time of opening, the crease is removed when a tensile force is applied to the two separated films by weak sealing on both sides of the crease. Both sides of the can be lifted from the mountain fold in a balanced manner and peeled off. That is, the tensile force applied to the two separation films is not biased to any one side of the fold line at the fold line, and the tensile force does not act on both sides of the fold line and the fold line. The portion (one separation film) can be uniformly peeled from the mountain fold portion (the other separation film).

  And in any of the above cooked rice processed food packaging materials, one of the separation films is a pair of first facing portions that are continuously or intermittently sealed in the crossing direction, and the other separation film is a pair of first It is preferable that two opposing parts are sealed continuously or intermittently in the crossing direction. In this way, when the two separation films are pulled in the separating direction, it is possible to prevent the pair of first facing portions from being displaced from each other and the pair of second facing portions from being displaced. A tensile force can be reliably transmitted to each separation film.

  Moreover, it is preferable that the width | variety of the said inner film is formed wider than the width | variety of the division direction of an outer film. When opening the packaging material for cooked rice processed food, the outer film and the inner film are pulled together in the width direction, but if the inner film is formed wider than the outer film as described above, the tensile force is increased. Therefore, the separation film can be separated more reliably and easily.

  The method for producing an inner film of a packaged food for cooked rice food according to the present invention includes an outer film formed to be separable in the width direction, and the outer film via a sheet-like food, and separated in the same direction as the outer film. And a method for producing an inner film of a packaged food for cooked rice food, wherein the outer film and the inner film are sealed so as to surround the sheet-shaped food. Two long films formed directly or indirectly so that the easy peel region to which easy peel properties are imparted extend in the longitudinal direction, and the easy peel region is opposed to the other long film. The two long films are fed so as to form a seal line extending continuously in the longitudinal direction in the easy peel region while being overlapped. A sealing step for sealing each of the long films, and after the sealing step, one fold line or a fold line extending in the longitudinal direction is formed in a predetermined region extending in the longitudinal direction with a predetermined width including the sealing line in each long film. A long film folding step in which a predetermined region of the long film is valley-folded and a predetermined region of the other long film is mountain-folded, and both sides in the width direction of the predetermined region of one long film are the other long A long film unfolding step for unfolding both sides of the predetermined region of two overlapping long films so as to extend in opposite directions to both sides of the film in the width direction of the predetermined region. And Here, “seal” includes not only welding by heat sealing or ultrasonic sealing but also adhesion via an adhesive, and “seal line” refers to bonding of resin films by sealing. It means a linear or band-like region at the site. “Easy peelability” refers to a property that makes it easy to peel off a portion joined by a seal.

  In the method for producing the inner film, in the sealing step, two overlapping long films are connected via a linear or belt-like seal line extending in the longitudinal direction. Then, in the long film folding step, the predetermined region of one long film is valley-folded to form a fold or a fold line extending in the longitudinal direction in the predetermined region of each long film and the other long By folding the long film into a mountain, a portion (predetermined region: mountain fold) of the other long film is located in the valley folded portion (predetermined region: valley fold). In the long film unfolding step, both sides of the predetermined region of the two long films that overlap each other are unfolded so that both sides of the predetermined region of one long film on which the mountain folds are formed are the other long side. It extends in the opposite direction with respect to both sides of the short direction of the predetermined area of the length film.

  In this way, the two long films are connected via the seal line, and both sides of the predetermined region (the valley fold and the mountain fold) are formed on the other side while forming the predetermined region in the valley fold and the mountain fold. By being formed so as to extend on the opposite side to the long film, it becomes a continuous body (so-called original fabric sheet) of the inner film composed of two separation films arranged in parallel in the separation direction. That is, one separation film includes a mountain fold portion in which a bent ridge line is formed and a pair of first opposed portions that extend from the mountain fold portion and face each other, while the other separation film is one separation film. The both sides of the valley fold part are folded back to form a valley fold part in which the mountain fold part forming the bent ridge line is fitted, and a ridge line extending in the same direction or substantially the same direction as the fold line of the valley fold part. A pair of opposing second opposing portions, and the two separation films are sealed over the entire length or substantially the entire length in the crossing direction of the mountain fold portion and the valley fold portion with respect to the separation direction, Directly over the entire length or substantially the entire length in the intersecting direction including an area where the easy peel area to which easy peel properties are imparted is sealed on at least one of the mutually facing surfaces of the mountain fold and valley fold. Indirectly formed It becomes long original sheet of film.

  Therefore, when the original sheet is cut into a predetermined length in the longitudinal direction, the inner film having the above-described structure is formed into a sheet. When the inner film pulls the pair of first opposing portions in one separation film and the pair of second opposing portions in the other separation film in the separating direction, the tensile force on the pair of second opposing portions causes a valley Both sides of the folds of the fold-up portion are sequentially raised toward the second facing portion side with respect to the mountain fold portion. That is, when the pair of first facing portions and the pair of second facing portions are pulled in the separating direction, the ridge line formed at the boundary between the valley folding portion and the second facing portion is shifted to the fold side of the valley folding portion. In addition, the valley folding part is turned back to the second facing part side in order.

  And in the seal line (sealed part) in the easy peel area, the easy folding property is given, so that the valley folds smoothly rolls up (peels) from the mountain folds, and the two separated films are separated. Separation can be performed easily and smoothly. Thereby, as a result of dividing both the outer film and the inner film into two parts, the sheet-like food is exposed and the cooked rice food and the sheet-like food can be integrated. And, since the two separated films are sealed over the entire length in the crossing direction or substantially the entire length with respect to the separating direction, the packaged food for cooked rice processed food is processed from the cooked rice processed food between the two separated films. The moisture does not reach the sheet-like food, and the original texture and taste of the sheet-like food can be maintained.

  As described above, by using the above production method, an excellent inner film capable of producing the above-described functions and effects can be produced without complicatedly bending two long films. .

  And the said sealing process forms a long film in the said easy peel area | region so that it may form two seal lines which extend in the longitudinal direction at intervals in the short direction orthogonal to the longitudinal direction of the long film. In the long film folding step, one long film is valley-folded and the other long film is mountain-folded so as to form a crease and a folded ridge line between two seal lines. You may do it. In this way, it is possible to produce an inner film in which two separation films are sealed on both sides of a fold line of a mountain fold and a fold of a valley fold. The inner film is more airtight due to the two seal lines. Also, when a tensile force is applied to the two separation films, the tensile force is not limited by the fold at the valley fold. There is no bias acting only on one side, and it can be uniformly peeled on both sides of the crease.

  Further, the method for producing an inner film of a packaged food for cooked rice food according to the present invention includes an outer film formed so as to be separable in the width direction, and is superimposed on the outer film via a sheet-like food, and has the same direction as the outer film. An inner film formed so as to be separable, and the outer film and the inner film are sealed so as to surround the sheet-like food. The long film is supplied in the longitudinal direction while being stacked, and a sealing process for weakly sealing the two long films so as to form a sealing line continuously extending in the longitudinal direction, and after the sealing process, A predetermined region of one long film so as to form a fold or a fold line extending in the longitudinal direction in a predetermined region extending in the longitudinal direction with a predetermined width including the seal line in the long film A long film folding step in which a predetermined region of the other long film is folded in a valley and the width of the predetermined region of the other long film is on both sides in the width direction of the predetermined region of one long film. And a long film unfolding step for unfolding both sides of a predetermined region of two overlapping long films so as to extend in opposite directions with respect to both sides of the direction. The term “weak seal” as used herein includes not only welding by heat sealing or ultrasonic sealing, but also adhesion via an adhesive, and means that welding or bonding is performed so that the joint portion is easily peeled off. Say.

  In the manufacturing method of the inner film, in the sealing step, two superposed long films are connected via a linear or belt-like seal line (weak seal) extending in the longitudinal direction. Then, in the long film folding step, the predetermined region of one long film is valley-folded to form a fold or a fold line extending in the longitudinal direction in the predetermined region of each long film and the other long By folding the long film into a mountain, a portion (predetermined region: mountain fold) of the other long film is located in the valley folded portion (predetermined region: valley fold). In the long film unfolding step, both sides of the predetermined region of the two long films that overlap each other are unfolded so that both sides of the predetermined region of one long film on which the mountain folds are formed are the other long side. It extends in the opposite direction with respect to both sides of the short direction of the predetermined area of the length film.

  In this way, the two long films are connected via the seal line, and both sides of the predetermined region (the valley fold and the mountain fold) are formed on the other side while forming the predetermined region in the valley fold and the mountain fold. By being formed so as to extend on the opposite side to the long film, it becomes a continuous body (so-called original fabric sheet) of the inner film composed of two separation films arranged in parallel in the separation direction. That is, one separation film includes a mountain fold portion in which a bent ridge line is formed and a pair of first opposed portions that extend from the mountain fold portion and face each other, while the other separation film is one separation film. The both sides of the valley fold part are folded back to form a valley fold part in which the mountain fold part forming the bent ridge line is fitted, and a ridge line extending in the same direction or substantially the same direction as the fold line of the valley fold part. An inner film in which the two separated films are weakly sealed over the entire length or substantially the entire length in the crossing direction with respect to the separation direction. It becomes a long original fabric sheet.

  Therefore, when the original sheet is cut into a predetermined length in the longitudinal direction, the inner film having the above-described structure is formed into a sheet. When the inner film pulls the pair of first opposing portions in one separation film and the pair of second opposing portions in the other separation film in the separating direction, the tensile force on the pair of second opposing portions causes a valley Both sides of the folds of the fold-up portion are sequentially raised toward the second facing portion side with respect to the mountain fold portion. That is, when the pair of first facing portions and the pair of second facing portions are pulled in the separating direction, the ridge line formed at the boundary between the valley folding portion and the second facing portion is shifted to the fold side of the valley folding portion. In addition, the valley folding part is turned back to the second facing part side in order.

  And in the weakly sealed part, a valley fold part rolls up smoothly from a mountain fold part (peeling), and can isolate | separate two separation films easily and smoothly. Thereby, as a result of dividing both the outer film and the inner film into two parts, the sheet-like food is exposed and the cooked rice food and the sheet-like food can be integrated. And, since the two separated films are sealed over the entire length in the crossing direction or substantially the entire length with respect to the separating direction, the packaged food for cooked rice processed food is processed from the cooked rice processed food between the two separated films. The moisture does not reach the sheet-like food, and the original texture and taste of the sheet-like food can be maintained.

  As described above, by using the above production method, an excellent inner film capable of producing the above-described functions and effects can be produced without complicatedly bending two long films. .

  And, the sealing step weakly seals the long films so as to form two seal lines extending continuously in the longitudinal direction with a gap in the short direction perpendicular to the longitudinal direction of the long film, In the long film folding step, one long film may be folded in a valley and the other long film may be folded in a mountain so as to form a crease and a folded ridge line between two seal lines. . In this way, it is possible to produce an inner film in which two separation films are sealed on both sides of a fold line of a mountain fold and a fold of a valley fold. The inner film is more airtight due to the two seal lines. Also, when a tensile force is applied to the two separation films, the tensile force is not limited by the fold at the valley fold. There is no bias acting only on one side, and it can be uniformly peeled on both sides of the crease.

  And in any said manufacturing method, after the said elongate film expansion | deployment process, it further has the opposing part sealing process of sealing the mutually opposing parts of each elongate film continuously or intermittently in a longitudinal direction. Good. If it does in this way, the front-end | tip parts which one separation film opposes will be sealed continuously or intermittently, and the inner film by which the opposing parts of the other separation film were continuously or intermittently sealed will be produced. be able to. Such an inner film can suppress the occurrence of misalignment between opposite ends when pulling two separation films in the separating direction, and reliably transmits the pulling force at the time of opening to each separation film. be able to

  After the long film unfolding step, if it further comprises a roll forming step of winding two long films in the longitudinal direction to form a roll, the inner film original sheet (continuous body) is in a compact state. Can be stored and transported, and an inner film having the above-described configuration can be produced by pulling a continuous body from a roll and cutting it into a predetermined length.

  Moreover, you may further provide the cutting process of cut | disconnecting two long films by a predetermined length in a longitudinal direction after the said sealing process. If it does in this way, the inner film used as the sheet | seat shape which show | plays the said effect can be produced continuously.

  As described above, the present invention can prevent the inflow of moisture from cooked rice processed food, can maintain the original texture and taste of the sheet-like food, and can be easily opened. Processed food packaging materials can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  The packaging material for cooked rice food according to the present embodiment is a packaged state in which the cooked rice food such as rice balls and sushi is separated from the sheet food such as seaweed and thin baked eggs, and these are eaten integrally when opened. It can be made.

  Specifically, as shown in FIGS. 1 to 3, the packaged food for cooked rice food according to the present embodiment includes an outer film 10 that can be divided in the width direction, and a sheet shape such as laver or thin baked eggs. The outer film 10 is overlapped with the outer film 10 through the food S, and is formed so as to be separable in the same direction as the outer film 10. The outer film 10 and the inner film 20 surround the sheet-like food S. It is sealed. In addition, in FIG. 1, the area | region where the outer periphery of the outer film 10 and the outer periphery of the inner film 20 were attached | subjected has shown the area | region sealed. Here, the “seal” includes not only welding by heat sealing or ultrasonic sealing but also adhesion through an adhesive, but in the present embodiment, it means heat sealing.

  The outer film 10 is a resin film formed in a substantially rectangular shape, and a strip-shaped cut tape 110 is attached so as to extend in the longitudinal direction at the approximate center of the short direction (width direction) orthogonal to the longitudinal direction. Yes. Thereby, the outer film 10 is cut | disconnected along this cut tape 110 by pulling the cut tape 110 from any one end side, and can be divided into 2 now in the width direction. In addition, since the outer film 10 is cut by the cut tape 110, the outer film 10 may be a film having no cutting direction. However, in order to prevent tearing in an unspecified direction, a film having a cutting direction (stretched) Of course, a film) may be employed.

  As described above, when the cut tape 110 is pulled, the outer film 10 according to the present embodiment is cut on both sides of both ends of the cut tape 110 in order to make it easy to grip the end of the cut tape 110. A gripping piece 130 is formed between the notches 120 and 120.

  The inner film 20 is composed of two separation films 21 and 22 arranged in parallel in the separation direction. Each of the two separation films 21 and 22 is composed of a resin film, and in the present embodiment, is composed of a PP (polypropylene) film. One separation film 21 of the two separation films 21 and 22 is folded in half in a half as shown in FIG. 3, and a mountain fold portion 210 that forms a bent ridge line L1, and the mountain fold portion A pair of first facing portions 211a and 211b extending from 210 and facing each other.

  The mountain fold 210 is composed of band-shaped regions (hereinafter referred to as band-shaped regions) 210a and 210b on both sides of the bent ridge line L1. That is, the mountain fold portion 210 includes two belt-like regions 210a and 210b that extend from the bent ridge line L1 along the bent ridge line L1. In order to emphasize the mode of the separation films 21 and 22, in FIG. 3 and the like, overlapping portions of the separation films 21 and 22 (for example, the band-like regions 210a and 210b of the mountain fold part 210, the belt-like regions 220a and 210b of the valley fold part 220, 220b, mountain folds 210 and valley folds 220, a pair of first opposing portions 211a, 211b, etc.) are spaced apart from each other.

  Each of the pair of first facing portions 211a and 211b is formed continuously with the mountain fold portion 210 (two belt-like regions 210a and 210b). That is, since the one separation film 21 is formed by folding a single film into two, one belt-like region 210a and one first opposing portion 211a are continuously formed from the bent ridge line L1. While being formed, the other belt-like region 210b and the other first opposing portion 211b are continuously formed from the bent ridgeline L1.

  The mountain fold portion 210 is a portion located in the valley fold portion 220 in a state where a crease L2 and a fold line L1 of the valley fold portion 220 described later of the other separation film 22 face each other. It is formed in the size and form equivalent to 220. In the present embodiment, the pair of first facing portions 211a and 211b extend in the intersecting direction with respect to the separation direction and the end portions (tip portions) facing each other are in the intersecting direction (the direction in which the bent ridge line L1 extends). ) Are intermittently or continuously sealed, and the opposing tip portions are substantially integrated. In the present embodiment, point sealing is performed at a plurality of locations spaced in the crossing direction, and the tips of the first facing portions 211a and 211b are intermittently sealed.

  The other separation film 22 forms a valley fold 220 where the mountain fold 210 of the one separation film 21 is fitted, and ridge lines L, L extending in the same direction or substantially in the same direction as the fold L2 of the valley fold 220. As described above, a pair of second facing portions 221a and 221b are provided that are folded on both sides of the valley fold portion 220 and face each other. That is, the other separation film 22 is a region in which the vicinity of the ridge line L2 is opposed so that the ridge line of the film folded in half substantially enters into the opposed region by folding in half. A valley fold 220 is formed by folding back in between.

  The valley fold 220 is composed of two belt-like regions (hereinafter referred to as belt-like regions) 220a and 220b extending from the crease L2 along the crease L2. And a pair of 2nd opposing part 221a, 221b is extended from the front-end | tip of each strip | belt-shaped area | region 220a, 220b, and is mutually opposite direction so that ridgeline L, L may be formed in the front-end | tip of each strip | belt-shaped area | region 220a, 220b. It is formed by being folded back. And a pair of 2nd opposing part 221a, 221b extends in the crossing direction with respect to the separation direction, and ends (tip parts) facing each other intermittently in the crossing direction (direction in which the bent ridge line L1 extends) or It is sealed continuously and the opposing tip is substantially integrated. In the present embodiment, point sealing is performed at a plurality of locations spaced in the intersecting direction, and the tips of the second facing portions 211a and 211b are also intermittently sealed.

  Then, the two separation films 21 and 22 are arranged in a direction in which the folded ridge line L1 and the fold line L2 extend in a state where the mountain fold portion 210 of one separation film 21 is fitted to the valley fold portion 220 of the other separation film 22. Connected by continuous sealing. In the present embodiment, sealing is performed on both sides of the fold line L1 of the mountain fold part 210 and the crease L2 of the valley fold part 220. Thus, the band-like regions 210a, 210b, 220a, and 220b of the mountain fold portion 210 and the valley fold portion 220 are connected to each other via the seal lines 30 and 30. Therefore, the inner film 20 according to this embodiment is formed in an outer shape corresponding to the outer film 10 by connecting the two separation films 21 and 22 by the two seal lines 30 and 30. The “seal line” means a linear or belt-like region where the films are joined by a seal, and is formed in a belt shape in this embodiment.

  The two separation films 21 and 22 include a region where the easy peel region EA to which easy peel properties are imparted is sealed on at least one of the opposing surfaces of the mountain fold portion 210 and the valley fold portion 220. Thus, it is formed directly or indirectly over the entire length or substantially the entire length in the cross direction with respect to the separation direction. More specifically, one separation film 21 according to the present embodiment has an easy peel so as to straddle two belt-like regions 210a and 210b constituting the mountain fold portion 210 on one surface facing the valley fold portion 220 side. A film 222 is attached. The easy peel film 222 is formed with an easy peel layer excellent in easy peel property (peelability) with respect to a seal on at least one surface, and the easy peel layer is opposed to the valley fold 220 (outside). Is provided.

  Therefore, the easy peel area | region EA is formed in one separation film 21 which concerns on this embodiment by sticking the easy peel film 222 to the mountain fold part 210. FIG. Here, “easy peel” refers to a property that weakens the connection strength and facilitates peeling. In addition to attaching the easy peel film 222 as described above, for example, a part coat may be applied, Easy peeling can be imparted by roughening the surface. In addition, since some part coats generate a characteristic odor when heated, when cooked rice foods that may be heated in a microwave oven or the like are to be packaged, as in this embodiment It is preferable to impart easy peel properties by sticking the easy peel film 222.

  The two separation films 21 and 22 (inner film 20) are placed on the outer film 10, and the fitting position of the mountain fold 210 and the valley fold 220 is the arrangement of the cut tape 110 of the outer film 10. It is formed to correspond to. Further, the inner film 20 has the same length in the width direction (distance between the tips of the first facing portions 211a and 211b and the tips of the second facing portions 221a and 221b) as the length of the outer film 10 in the width direction, or It is set longer than that, and is sized so that both end edges are not located inside the end edge of the outer film 10 in a state where the outer peripheral ends are sealed.

  As shown in FIGS. 1 and 2, the packaged food 1 for cooked rice food according to the present embodiment is configured such that the outer film 10 and the inner film 20 having the above-described configuration are overlapped with each other through the sheet-like food S, and the outer film as described above. 10 and the inner film 20 are produced by sealing the peripheral edges thereof. In addition, as described above, since the cut pieces 120 and 120 are formed on both sides of the end portion of the cut tape 110 at both end portions in the longitudinal direction of the outer film 10, the grip pieces 130 are formed. Except for the peripheral portions of the outer film 10 and the inner film 20 are sealed.

  As shown in FIG. 4, the packaged food 1 for cooked rice with the above-described structure is formed by placing a cooked rice food F (triangle rice ball in the figure) on the inner film 20 and folding it into two in the longitudinal direction. By sealing the parts, the cooked rice processed food F is packaged.

  In addition, the cooked rice processed food packaging material 1 according to the present embodiment, as shown in FIG. 5, places the cooked rice food F (triangle rice ball in the figure) on the inner film 20 and folds it in the longitudinal direction. In addition, the opposite end portions are sealed so as to form gussets on both sides, whereby the cooked rice processed food F is packaged, or as shown in FIG. , A triangular rice ball) is folded in the longitudinal direction, and the region that is not opposed to the cooked rice processed food F in the folded portion is folded along the cooked rice processed food F, and then the portion is adhered. The rice cooked food F can also be packaged by sticking with sticking means, such as a tape and a sealing material.

  In any packaging form, the packaged food for processed rice 1 according to the present embodiment is a seal in which the two separation films 21 and 22 extend in a direction crossing the separation direction as described above. Since it is sealed so as to form the lines 30, 30, the moisture from the cooked rice processed food F may enter between the inner film 20 and the outer film 10 through the two separation films 21, 22. In addition, the sheet-like food S is not damaged by moisture.

  Even if the packaging material 1 for cooked rice processed foods of the said structure is any packaging form mentioned above, after dividing the outer film 10 into the width direction with the cut tape 110, this outer film 10 (the package for said cooked rice processed foods) By pulling the material 1) both sides in the width direction in the separation direction, the inner film 20 is cut (divided) by the seal lines 30 and 30 and separated in the width direction both inside and outside, and the sheet food S and the cooked rice food F Become one.

  Specifically, the packaged material 1 for cooked rice food according to the present embodiment divides the outer film 1 as shown in FIG. 7A, and then the inner film 20 as shown in FIG. 7B. When a pulling force acts in the width direction (separation direction), the tip side of the valley fold 220 (band-like regions 220a, 220b) is pulled by the pair of second opposing portions 221a, 221b, and each band-like region 220a of the valley fold 220. , 220b are turned over from the mountain fold part 210 (band-like areas 210a, 210b), and the ridgelines L, L, which are the boundaries between the valley fold part 220 (band-like areas 220a, 220b) and the second facing parts 221a, 221b, Transition to the crease L2 side in the band-like regions 220a and 220b.

  Then, along with the transition of the ridgelines L and L, the strip-shaped regions 210 a and 210 b of the valley fold 220 connected via the seal lines 30 and 30 are peeled from the mountain fold 210. In the present embodiment, since the easy peel area EA is formed in the predetermined area ED (mountain fold portion 210) where the seal lines 30 and 30 are formed, the peeling is easier and more reliable.

  And as shown in FIG.7 (c), when the valley fold part 220 will peel completely from the mountain fold part 210, the two separation films 21 and 22 will be in the state which left | separated completely. Then, as shown in FIG. 7D, in the state where the outer film 10 and the inner film 20 are completely extracted, the sheet-like food S that has been interposed between the outer film 10 and the inner film 20 is exposed and cooked. The processed food F is placed on the sheet-shaped food S, and the processed rice F is wrapped in the sheet-shaped food S so that the processed food F is integrated and can be eaten.

  The inner film 20 of the packaged food 1 for cooked rice food having the above-described configuration is produced by cutting a long original fabric sheet that is a continuous body of the inner film 20 into a predetermined length. Here, the manufacturing method of an original fabric sheet (continuous body of the inner film 20) is demonstrated. In addition, although the outer film 10 is also produced by cutting a long film (original fabric) made of the continuous body, such an original fabric sheet is a general one, and the description is omitted.

  First, as shown in FIG. 8 (a), two long films 21 are formed directly or indirectly so that an easy peel area EA imparted with an easy peel property to at least one of them extends in the longitudinal direction. ', 22' is supplied in the longitudinal direction while being overlapped so that the easy peel area EA faces the long film 22 'on the other side. At the same time, the two long films 21 ′ and 22 ′ are sealed so as to form seal lines 30 and 30 extending continuously in the longitudinal direction in the easy peel area EA (sealing process). 8A to 8D are simplified cross sections at the time of manufacture.

  Specifically, on one of the two long films 21 ′ and 22 ′ to be superposed, a strip-shaped easy peel film 222 ′ having an easy peel property on one surface is provided with the easy peel film 222. The easy peel surface is stuck outward so that the center line extending in the longitudinal direction and the center line extending in the longitudinal direction of the one long film 21 ′ coincide or substantially coincide with each other. Thereby, the easy peel film 222 'forms an easy peel area EA to which the easy peel property is imparted to the one long film 21'. In the present embodiment, since the easy peel property is imparted to the entire area of the mountain folded portion 210 as the predetermined area ED where the two separation films 21 and 22 overlap each other, the easy peel film 222 ′ is short. The length in the hand direction corresponds to the total width of the pair of belt-like regions 210a and 210b of the mountain folded portion 210.

  Then, the two long films 21 ′ and 22 ′ are supplied in the longitudinal direction so that the easy peel area EA (easy peel film 222) of one long film 21 ′ faces the other long film 22 ′ side. It is superimposed while being done. The two long films 21 'and 22' are sealed so as to form seal lines 30 and 30 extending in the longitudinal direction in the easy peel area EA. In the present embodiment, the two long films 21 ′ and 22 ′ overlapped with each other in the easy peel area EA and in the approximate center in the short direction perpendicular to the longitudinal direction (the fold line L2 and the fold line L1). The seals are continuously sealed so as to form the two seal lines 30 and 30 extending in the longitudinal direction on both sides of the region to be (seal part) (sealing step).

  Thereafter, as shown in FIG. 8 (b), both sides in the short direction of the predetermined area ED (in the present embodiment, the easy peel film 222) of one long film 21 'are the other long film 22'. The predetermined areas ED of the two long films 21 ′ and 22 ′ so as to extend in opposite directions with respect to both sides in the short direction of the predetermined area ED (area facing the easy peel film 222 in the present embodiment). Fold both sides of the film and unfold (film unfolding process).

  That is, while maintaining the state in which the predetermined areas ED of the two long films 21 ′ and 22 ′ are opposed to each other, both sides of the predetermined area ED of each of the long films 21 ′ and 22 ′ are opposed to each other. It develops so that it may extend on the opposite side to 21 'and 22' (film development process). As a result, the two long films 21 ′ and 22 ′ are formed so that both sides of the predetermined area ED extend in a direction substantially orthogonal to the predetermined area ED and have a substantially U-shaped cross section. Overlap to form a mirror image in cross section.

  Then, as shown in FIG. 8C, a fold line L2 or a bent ridge line L1 extending in the longitudinal direction is formed in a predetermined area ED extending in the longitudinal direction including the easy peel area EA in each of the long films 21 ′ and 22 ′. As described above, the predetermined region ED of one long film 21 ′ is valley-folded and the other long film 22 ′ is folded in a mountain (film bending step). That is, the overlapped predetermined region ED is folded in the same direction together so that a crease is attached to the center or substantially the center of the overlapped predetermined region ED of the two long films 21 ′, 22 ′. Thereby, as shown in FIG. 8 (d), one long film 21 'is one separation film 21 in which the mountain fold portion 210 and the pair of first facing portions 211a and 211b are continuous in the crossing direction orthogonal to the separation direction. The other long film 22 ′ becomes a continuous body of one separation film 21 in which the valley fold portion 220 and the pair of second facing portions 221a and 221b are continuous in the crossing direction orthogonal to the separation direction.

  And after passing through the above-mentioned process, each of the two long films 21 ′ and 22 ′ is in a state in which both end portions (tip portions) in the short direction overlap each other, but the overlapping end portions are pulled. In consideration of becoming a part to be formed, the overlapping end portions are sealed continuously or intermittently in the longitudinal direction (opposing portion sealing step). In the present embodiment, the long films 21 ′ and 22 ′ are point-sealed at a plurality of points at intervals in the longitudinal direction and are intermittently sealed. By this. In each of the long films 21 ′ and 22 ′, opposite end portions are substantially integrated.

  Then, the two long films 21 ′ and 22 ′ are sealed while being supplied in the longitudinal direction in this way, and subjected to bending or the like, whereby a raw sheet as a continuous body of the inner film 20 is produced. And when producing the inner film 20 continuously in this manufacturing process, the original fabric sheet is cut into a predetermined length in the longitudinal direction (cutting step), and the sheet-like inner film 20 having the above-described effects is obtained. It will be produced sequentially. On the other hand, when the inner film 20 is manufactured later, as shown in FIG. 9, the raw sheet is sequentially wound in the longitudinal direction to form a roll (roll forming step), and is stored and transported. And when producing the inner film 20 from the roll-formed original fabric sheet, the original film sheet is pulled out from the roll and cut into a predetermined length (cutting step), thereby producing a single wafer having the above-mentioned functions and effects. The inner film 20 is produced.

  As mentioned above, the packaging material 1 for cooked rice processed food according to this embodiment can prevent the inflow of moisture from the cooked rice processed food F, can maintain the original texture and taste of the sheet-like food S, It is new and innovative that can be opened easily. Moreover, according to the manufacturing method of the inner film 20 of this packaging material 1 for cooked rice processed foods, it is not necessary to perform a complicated bending process etc., and the inner film 20 which has the said effect | action and effect can be produced easily.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  In other words, in the above embodiment, the easy peel film 222 is attached to one separation film 21 to form the easy peel area EA. However, the present invention is not limited to this. For example, as shown in FIG. As described above, an easy peel area EA may be formed on the separation film 21 by applying a part coat for imparting easy peel properties to one surface of the separation film 21. If it does in this way, the two separation films 21 and 22 which formed the mountain fold part 210 and the valley fold part 220 will be sealed directly, and the thickness of the part which the mountain fold part 210 and the valley fold part 220 overlap is obtained. Can be made thinner. Thereby, for example, even if a long original fabric sheet as described above is rolled, it can be properly wound without the winding center being shaken.

  And it is not necessary to form the easy peel area EA in the whole area of the mountain fold part 210 and the valley fold part 220 (predetermined area ED). For example, the easy peel area EA is formed only in the area where the separation films 21 and 22 are sealed. May be. Further, in the above embodiment, the easy peel property is imparted only to one separation film 21, but the present invention is not limited to this. For example, an easy peel region EA may be formed only on the other separation film 22, Of course, the easy peel area EA may be formed on both of the separation films 21 and 22. Also in this case, it can be created by the same manufacturing method as in the above embodiment.

  In the above embodiment, the mountain folds 210 and the valley folds 220 of the two separation films 21 and 22 are sealed on both sides of the fold line L1 and the crease L2, and two sheets are provided via the two seal lines 30 and 30. However, the present invention is not limited to this, and for example, the whole area of the easy peel area EA is sealed, or a linear or belt-like shape is formed in the easy peel area EA. It may be sealed so as to form one or two or more seal lines 30, 30 formed. Even in this case, when the band-like regions 210a and 210b of the valley fold portion 220 are pulled by the second facing portions 221a and 221b at the time of opening and rise from the mountain fold portion 210, the sealed portion can be smoothly peeled off. Can do. However, in consideration of the timing when the belt-like regions 210a and 210b constituting the valley-folded portion 220 rise up from the mountain-folded portion 210, the start and completion of peeling are the same at the belt-like regions 210a, 210b, 220a and 220b. The position and width of the seal lines 30 and 30 may be set so as to be.

  In the above-described embodiment, the mountain folds 210 and the valley folds 220 of the two separation films 21 and 22 are sealed over the entire length or substantially the entire length in the crossing direction with respect to the separation direction. The easy peel area EA imparted with an easy peel property is formed directly or indirectly over the entire length in the intersecting direction or substantially the entire length on at least one of the surfaces facing each other. However, without forming an easy peel area in any of the separation films 21 and 22, the mountain folds 210 and the valley folds 220 of the two separation films 21 and 22 intersect each other with respect to the separation direction. May be weakly sealed over the entire length or substantially the entire length. The “weak seal” includes not only welding by heat sealing or ultrasonic sealing but also adhesion through an adhesive, and means welding or bonding so that the bonded portion can be easily peeled off.

  Also in this case, when the pair of first opposing portions 211a and 211b in one separation film 21 and the pair of second opposing portions 221a and 221b in the other separation film 22 are pulled in the separation direction, the pair of second opposing portions Due to the pulling force on the facing portions 221a and 221b, the mountain fold portions 210 on both sides of the folds in the valley fold portion 220 are sequentially raised toward the second facing portions 221a and 221b. And in the weakly sealed part, the valley fold part 220 rolls up smoothly (peels) from the mountain fold part 210, and can separate the two separation films 21 and 22 easily and smoothly. Thereby, as a result of dividing the outer film 10 and the inner film 20 into two parts, the sheet-like food S is exposed, and the cooked rice processed food F and the sheet-like food S can be integrated. Accordingly, even if the two folded films 21 and 22 are formed with the fold-folded portion 210 and the valley-folded portion 220 and are weakly sealed over the entire length in the crossing direction or substantially the entire length with respect to the separating direction of the separating films 21 and 22. The same operations and effects as the above embodiment can be obtained. Even in this case, if the mountain fold part 210 and the valley fold part 220 are weakly sealed so as to form the two seal lines 30, 30, the valley fold part 220 can be separated from the mountain fold part 210 in a well-balanced manner. And the manufacturing method of the inner film 20 in this case is basically the same as that of the above embodiment, and in the sealing step, the two long films 21 ′ and 22 ′ not imparted with easy peel properties are elongated. What is necessary is just to weakly seal continuously in the direction.

  In the above embodiment, the opposing end portions (the end portions of the pair of first opposing portions 211a and 211b and the end portions of the pair of second opposing portions 221a and 221b) of the two separation films 21 and 22 are sealed. However, the portion to be sealed is not limited to the end portion (tip portion). For example, the separation films 21 and 22 (long films 21 ′ and 22 ′) face each other. You may make it seal the center parts of the part (a pair of 1st opposing part 211a, 211b, a pair of 2nd opposing part 221a, 221b), or other parts. Even if it does in this way, while a pair of 1st opposing part 211a, 211b becomes integral, a pair of 2nd opposing part 221a, 221b becomes integral, and the pulling force at the time of opening is reliably made to the sealed part It can be made to peel by acting. Therefore, the tip portions of the pair of first facing portions 211a and 211b and the tip portions of the pair of second facing portions 221a and 221b do not necessarily overlap each other. That is, each of the two separation films 21 and 22 is not limited to the one folded back so that the opposite end portions overlap each other.

  Moreover, it is not limited to what sealed the opposing part of the 2 sheets of separation films 21 and 22, but the edge part of a pair of 1st opposing part 211a, 211b, a pair of 2nd opposing part 221a, 221b The aspect with which the edge part was independent may be sufficient. However, when the inner film 20 is pulled to open the packaged food 1 for processed cooked rice, if the overlapping portions of the separation films 21 and 22 are independent, a shift occurs in that portion, and the tensile force is increased. Since there exists a possibility that it may not act | operate efficiently, it is preferable to seal and unite the opposing parts of each separation film 21 and 22 like the said embodiment.

  Moreover, in the said embodiment, the edge parts of each separation film 21 and 22 (the edge part of a pair of 1st opposing part 211a, 211b, the edge part of a pair of 2nd opposing part 221a, 221b) are several places. However, the present invention is not limited to this. For example, the ends facing each other so as to form a linear or belt-like seal line extending in the same direction (crossing direction with respect to the separation direction) as the bent ridge line L1. The parts may be sealed.

  In the above-described embodiment, the mountain fold portion 210 and the valley fold portion 220 are formed so as to form a linear seal line 30 that extends straight in the intersecting (orthogonal) direction with respect to the separation direction of the two separation films 21 and 22. Although it was made to seal over the full length of a crossing direction with respect to the separation direction of the separation films 21 and 22, or substantially the whole length, it is not limited to this, for example, the separation direction of the two separation films 21 and 22 The fold-folded portion 210 and the valley-folded portion 220 are arranged in a direction intersecting with the separation direction of the separation films 21 and 22 so as to form a saw-tooth or wavy seal line 30 extending in the intersecting (orthogonal) direction. You may make it seal over the full length or substantially full length. In this way, when a plurality of vertices are formed in the extending direction of the seal line 30 and a tensile force is applied to the separation films 21 and 22, the tensile force is concentrated on each vertice. The part which was made becomes easy to peel, and the ease of opening of the packaging material for the cooked rice processed food can be further improved.

  In the manufacturing method of the inner film 20 of the above embodiment, the predetermined areas of the long films 21 ′ and 22 ′ are maintained while maintaining the predetermined areas ED of the two long films 21 ′ and 22 ′ facing each other. After developing (folding) both sides of the ED so as to extend in the opposite direction to the opposing long films 21 ′ and 22 ′, the predetermined regions ED of the long films 21 ′ and 22 ′ are folded and However, the present invention is not limited to this. For example, as shown in FIG. 11 (a), after the two long films 21 'and 22' overlapped are sealed (after the sealing step). ), As shown in FIG. 11B, the two long films 21 ′ and 22 ′ are folded in the same direction and at the same time so as to form a ridge line with a center line extending in the longitudinal direction. As shown in 11 (c), the other length Film 22 'ridge across the predetermined region ED of L, so as to form L, and the long film 22 of the other side' folded back on both sides of the predetermined region ED in the opposite direction may be (expanded to) as. That is, in the film folding process, the mountain folded portion 210 and the valley folded portion 220 are formed on the two long films 21 ′ and 22 ′, and both sides of the predetermined region ED of one long film 21 ′ are opposed to each other. One step of the film unfolding step (step of folding both sides of the predetermined region ED of one long film 21 ′) is performed in the posture, and then both sides of the predetermined region ED of the other long film 22 ′ are opposed to each other. You may make it carry out the attitude | position and perform one process (The process of bending the both sides of the predetermined area | region ED of the other elongate film 22 '). Even if it does in this way, while the mountain fold part 210 is formed in one separation film 21, the valley fold part 220 by which the mountain fold part 210 was fitted is formed in the other separation film 22, and with the said embodiment. A similar inner film 20 can be produced. In this case as well, as shown in FIG. 11 (d), the end portions of the long films 21 ′ and 22 ′ that extend in the longitudinal direction and face each other are continuously or intermittently sealed in the longitudinal direction. It may be.

  Moreover, in the said embodiment, although the edge parts which each elongate film 21 ', 22' opposes directly or intermittently in a longitudinal direction, for example, two elongate films 21 ' In order to absorb the increase in thickness due to the overlap at the center of 22 ′, a band-like film is interposed between the ends that are folded back and face each other, and the ends that face each other through the film are continuous or You may make it seal intermittently. If it does in this way, in the state which became the long original fabric sheet which is a continuum of the inner film 20, the thickness in a center part and both ends can be made uniform in the transversal direction, and it is in roll shape. Can be wound in the proper state when

The perspective view of the packaging material for cooked rice processed food which concerns on one Embodiment of this invention is shown. The disassembled perspective view of the packaging material for cooked rice processed foods concerning the embodiment is shown. The general | schematic longitudinal cross-sectional view containing the partial enlarged view of the packaging material for cooked rice processed foods concerning the embodiment is shown. The perspective view of the state which packaged the cooked rice processed food with the packaging material for cooked rice processed food concerning the embodiment is shown. The perspective view of the state which packaged the cooked rice processed food with another form with the packaging material for cooked rice processed food which concerns on the embodiment is shown. The perspective view of the state which packaged the cooked rice processed food with another form with the packaging material for cooked rice processed food concerning the embodiment is shown. It is explanatory drawing explaining the state at the time of opening the packaging material for cooked rice processed foods concerning the embodiment, Comprising: (a) shows the state which cut | disconnected the outer film, (b) And (c) The state which pulled the film and the inner film in the width direction is shown, (d) shows the opened state. It is a schematic explanatory drawing explaining the manufacturing method of the inner film of the packaging material for processed rice foods concerning the embodiment, (a) is a sealing process, (b) is a film bending process, (c) and ( d) shows a film development process. The perspective view of what made the continuous body (raw material) of the inner film of the packaging material for processed rice foods which concerns on the embodiment into a roll is shown. The schematic longitudinal cross-sectional view containing the elements on larger scale of the packaging material for cooked rice processed foods concerning other embodiment of this invention is shown. It is explanatory drawing explaining the manufacturing method of the inner film which concerns on another embodiment, Comprising: (a) is a sealing process, (b) is a part of a film expansion | deployment process and a film bending process, (c) is A part of film folding process is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Wrought food packaging material, 10 ... Outer film, 20 ... Inner film, 21 ... Separation film, 21 ', 22' ... Long film, 21,22 ... Separation film, 30 ... Seal line, 110 ... Cut tape , 130 ... gripping pieces, 210 ... mountain folds, 210 a and 210 b ... belt-like regions, 211 a and 211 b ... first opposing parts, 220 ... valley folds, 220 a and 220 b ... belt-like regions, 221 a and 221 b ... second opposing parts, 222 ... Easy peel film, EA ... Easy peel area, ED ... Predetermined area, F ... Rice processed food, L1 ... Bent ridge, L2: Fold, S ... Sheet food

Claims (15)

  An outer film formed so as to be separable in the width direction, and an inner film formed so as to be separable in the same direction as the outer film. In the packaged food for cooked rice products, wherein the outer film and the inner film are sealed, the inner film is composed of two separation films arranged in parallel in the separation direction, and one separation film is a folded ridge line. And a pair of first opposing portions extending from the mountain fold portion and facing each other, while the other separation film is a valley fold portion into which the mountain fold portion of one separation film is fitted. A pair of second opposing portions that are folded back on both sides of the valley fold so as to form a ridge line extending in the same direction or substantially in the same direction as the fold line of the valley fold, and separated into two sheets Film, mountain The portion and the valley fold are sealed over the entire length in the crossing direction with respect to the separation direction or substantially the entire length, and at least one of the opposing surfaces of the mountain fold and the valley fold has an easy peel property. A packaging material for cooked rice food, characterized in that it is formed directly or indirectly over the entire length or substantially the entire length in the crossing direction, including the region where the applied easy peel region is sealed.   The packaging material for cooked rice processed food according to claim 1, wherein the two separation films are sealed on both sides of the fold line of the mountain fold part and the fold line of the valley fold part. In at least one of two separate films, strip easy peel film granted the easy peel properties on at least one surface thereof, the granted surface of said the Easy peelability of the mating separating film The packaging material for cooked rice processed foods according to claim 1 or 2, wherein the easy peel region is indirectly formed.   The package for cooked rice processed food according to claim 1 or 2, wherein at least one of the two separation films is provided with a part coat for imparting easy peel properties, whereby the easy peel region is directly formed. Wood.   An outer film formed so as to be separable in the width direction, and an inner film formed so as to be separable in the same direction as the outer film. In the packaged food for cooked rice products, wherein the outer film and the inner film are sealed, the inner film is composed of two separation films arranged in parallel in the separation direction, and one separation film is a folded ridge line. And a pair of first opposing portions extending from the mountain fold portion and facing each other, while the other separation film is a valley fold portion into which the mountain fold portion of one separation film is fitted. A pair of second opposing portions that are folded back on both sides of the valley fold so as to form a ridge line extending in the same direction or substantially in the same direction as the fold line of the valley fold, and separated into two sheets Film, mountain Rice processed food packaging material parts and the and the valley portion, characterized in that it is weak seal over the entire length or substantially the entire length in the transverse direction relative to the separating direction.   The packaging material for cooked rice food according to claim 5, wherein the two separation films are weakly sealed on both sides of the fold line of the mountain fold and the fold of the valley fold.   In one separation film, a pair of first facing portions are sealed continuously or intermittently in the crossing direction, and in the other separation film, a pair of second facing portions are continuous or intermittent in the crossing direction. The packaging material for cooked rice processed foods according to any one of claims 1 to 6, wherein the packaged food is processed into food.   The packaging material for cooked rice processed food according to any one of claims 1 to 7, wherein the inner film has a width in a separation direction wider than a width in a division direction of the outer film.   An outer film formed so as to be separable in the width direction, and an inner film formed so as to be separable in the same direction as the outer film. A method for producing an inner film of a packaged food for cooked rice, wherein the outer film and the inner film are sealed, and an easy peel region to which at least one of them is provided with an easy peel property extends in the longitudinal direction. Two long films formed directly or indirectly are supplied in the longitudinal direction while being overlapped so that the easy peel region faces the long film on the other side, and the long film is long in the easy peel region. A sealing process for sealing two long films so as to form a sealing line extending continuously in the direction, and each long film after the sealing process The predetermined region of one long film is valley-folded and the other long film is formed so as to form a fold line or a fold line extending in the longitudinal direction in a predetermined region extending in the longitudinal direction with a predetermined width including the seal line A long film folding step of folding the predetermined region in a mountain, and both sides of the predetermined region of one long film in the width direction are opposite to both sides of the predetermined region of the other long film in the width direction And a long film unfolding step for unfolding both sides of a predetermined region of the two overlapping long films so as to extend.   In the sealing step, the long films are formed in the easy peel region so as to form two seal lines extending continuously in the longitudinal direction with a gap in the short direction perpendicular to the longitudinal direction of the long film. The long film folding step is performed so that one long film is valley-folded and the other long film is mountain-folded so as to form a crease and a folded ridge line between two seal lines. The manufacturing method of the inner film of the packaging material for cooked rice processed foods of Claim 9.   An outer film formed so as to be separable in the width direction, and an inner film formed so as to be separable in the same direction as the outer film. Is a method for producing an inner film of a packaging material for processed rice food, wherein the outer film and the inner film are sealed, and is supplied in the longitudinal direction while superposing two long films, continuously in the longitudinal direction A sealing step of weakly sealing two long films so as to form an extending seal line, and after the sealing step, the long film is elongated in a predetermined region extending in the longitudinal direction with a predetermined width including the seal line in each long film. A long length that folds a predetermined area of one long film and folds a predetermined area of the other long film so as to form a fold line or a folding ridge line extending in the direction Two overlapping films so that both sides in the width direction of the predetermined region of one long film extend in opposite directions to both sides in the width direction of the predetermined region of the other long film. A method for producing an inner film of a packaged food for cooked rice food, comprising: a long film developing step for developing both sides of a predetermined region of the long film.   In the sealing step, the long films are weakly sealed so as to form two seal lines extending continuously in the longitudinal direction with a gap in the short direction perpendicular to the longitudinal direction of the long film, 12. The long film folding step is configured to fold one long film in a valley and form the other long film in a mountain fold so as to form a crease and a folded ridge line between two seal lines. Of manufacturing inner film of packaging material for processed rice food.   The counter part sealing process which further comprises the opposing part sealing process of sealing the mutually opposing parts of each long film continuously or intermittently in a longitudinal direction after the said elongate film expansion | deployment process. The manufacturing method of the inner film of the packaging material for cooked rice foods as described in 2.   The cooked rice processed food according to any one of claims 9 to 13, further comprising a roll forming step of winding the two long films in the longitudinal direction to form a roll after the long film developing step. Of manufacturing inner film of packaging materials for packaging.   The packaging material for cooked rice processed food according to any one of claims 9 to 13, further comprising a cutting step of cutting two long films at a predetermined length in the longitudinal direction after the sealing step. A method for producing a film.

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