JP7657441B2 - Food Storage Bags - Google Patents

Description

The present invention relates to a bag for storing food.

Conventionally, when a store such as a supermarket sells foods such as skewered foods like yakitori, if there are many types of foods, the foods are placed unpackaged on a display plate such as a large dish, and the customer selects one or more of the desired types of food, places them in a plastic container themselves, and pays for and purchases them at the checkout counter.

However, because the food is displayed unpackaged, there is a risk of dust and other contaminants adhering to the food while it is on display, creating hygiene problems.

Patent Document 1 proposes a container for skewered foods that is configured by attaching a partition plate or partition tube with an opening that allows the block of food to be easily placed and removed from above to a cylindrical or box-shaped container that can hold block of food vertically, forming multiple partition sections.

Japanese Patent Application No. 10-219589

However, the containers for skewered foods described above require the store to store multiple skewered foods in advance, and since one container can store a large number of skewered foods, customers are forced to purchase types of skewered foods that they do not want.

Furthermore, when displaying skewered food in containers for skewered food, the display space required for the containers for skewered food is large, which poses the problem that it is not possible to display many containers for skewered food.

In addition, the containers for the skewered foods are bulky, which poses the problem of requiring a large storage space before use.

The present invention provides a food packaging bag that allows for the individual packaging of the minimum number of desired foods, such as skewered foods, and does not take up much space when the food is packaged, allowing for a large number of items to be displayed on store display stands, and furthermore does not take up storage space even before use, thus saving space.

The food storage bag of the present invention comprises a bag body having a front film and a back film integrated at the left and right ends and one end to form a storage section between the opposing surfaces of the front and back films and an opening of the storage section formed on the other end side;
a support portion formed by extending the back film of the bag body from the opening of the storage portion and having a weakened portion for separating the free end portion from the bag body,
The opening of the storage section is characterized in that one of the left and right halves is configured to have a larger opening than the other.

In addition, the manufacturing method of the food storage bag of the present invention includes a lamination step of manufacturing a laminated film by overlapping a long first film and a long second film in a state in which the second film protrudes from an edge of the first film;
a sealing step of forming strip-shaped seal portions at predetermined intervals in the longitudinal direction of the laminated film at overlapping portions of the first film and the second film, the strip-shaped seal portions extending in the width direction of the first film and the second film and having seal relief portions at end portions in the protruding direction of the second film;
and a cutting process for cutting the laminated film at the strip-shaped seal portion along a cutting line that is oriented in the longitudinal direction of the strip-shaped seal portion and passes through the seal escape portion to produce a food storage bag.

The food storage bag of the present invention can be fixed at any location by the support part when storing food in the storage section of the bag body, allowing food to be stored stably in the storage section.

The opening of the storage section of the bag body in the food storage bag is configured so that either the left half or the right half has a larger opening than the other, so that the opening can be easily opened by grasping the other end of the outer film that forms the opening of the storage section, and the desired food can be easily stored in the storage section.

Because food can be easily inserted diagonally into the opening of the storage section from the widened opening side, a tensile force is applied diagonally to the food storage bag due to the frictional force generated by the sliding contact between the food and the inside of the storage section, and this tensile force can be applied first to the end of the weak section. Therefore, the weak section can be easily separated in sequence from its end, and the bag body can be easily separated from the weak section, while the food can be stored in the storage section.

Then, by closing the storage section of the bag body, the food can be stored and packaged inside the storage section.

FIG. 2 is a front view showing the food storage bag. FIG. 2 is a cross-sectional view showing a food storage bag. 1 is a schematic diagram showing a part of the manufacturing process for a food storage bag. 1 is a schematic diagram showing a part of the manufacturing process for a food storage bag. 1 is a schematic diagram showing a part of the manufacturing process for a food storage bag. FIG. 2 is a perspective view showing a bundle of food storage bags. 1 is a diagram showing how to use the food storage bag. 1 is a diagram showing how to use the food storage bag. 1 is a diagram showing how to use the food storage bag. FIG. 11 is a front view showing another example of a food storage bag.

An example of the food storage bag of the present invention will be described with reference to the drawings. As shown in Figures 1 and 2, food storage bag A is made up of a front film 1 that is rectangular at the front and a back film 2 that is rectangular at the front and has the same width as front film 1 but is longer than front film 1, which are layered together.

The front and back films 1, 2 are integrated with one another at one opposing end in the length direction (lower end in FIG. 1) and both ends in the width direction (left and right ends) of the front and back films 1, 2 to form the bag body A1, and a storage section A11 for storing food (e.g., skewered food, stick-shaped snacks, bread, etc.) is formed between the opposing surfaces of the front and back films 1, 2. The storage section A11 is formed with the other end (upper end in FIG. 1) fully open.

For example, as shown in Figure 1, the front and back films 1 and 2 are integrated to form the bag body A1 by a sealed portion 31 formed at one opposing end (the lower end in Figure 1) of the front and back films 1 and 2 in the longitudinal direction, and left and right sealed portions 32 and 33 that are continuous with both ends of this sealed portion 31 and extend along both ends (left and right ends) of the front and back films 1 and 2 in the width direction. A storage portion A11 for storing food is formed between the opposing surfaces of the front and back films 1 and 2, surrounded by the sealed portions 31 to 33. The sealed portions 31 to 33 may be strip-shaped or linear with a predetermined width.

All or part of the integration of the left and right ends and one end of the front and back films 1 and 2 may be formed by a fold formed by folding a single film, without using a sealed portion. In the following explanation, a sealed portion (e.g., a heat sealed portion, a sealed portion using an adhesive, etc., with a heat sealed portion being preferred) is given as an example, but instead of a sealed portion, a general-purpose means for integrating films together may be used.

In the seal portion forming the storage portion A11 of the bag body A1, the left seal portion 32 is formed over the entire length of the front film 1 [so as to reach the other end edge 11 (the upper end edge in FIG. 1) of the front film 1], while the right seal portion 33 is formed without reaching the other end edge 11 of the front film 1, and no seal portion is formed between the right end of the front film 1 and the opposing back film 2 over a predetermined length from the other end edge 11 of the front film 1, and the front and back films 1 and 2 are in a state of being separated from each other. Therefore, the storage portion A11 of the bag body A1 has a first opening A12 formed by the other end of the front film 1 and the opposing back film, and a second opening A13 that is continuous with the first opening A12 and is formed on the side of the storage portion A11 and through which all or part of the food can be inserted, and the opening of the storage portion A11 is configured so that the right half has a larger opening degree than the left half. In FIG. 1, the opening of the storage section A11 is shown as being larger in the right half than in the left half, but it goes without saying that the left half may be configured to be larger in the opening than the right half.

The other end 321 of the left seal portion 32 is formed to be narrow, and the strength of the integration between the front and rear films 1 and 2 is slightly weaker than the remaining portion 322 of the left seal portion 32.

The other end of the backing film 2 that constitutes the bag body A1 protrudes to the other side beyond the other edge 11 of the front film 1, and this protruding portion forms the support part 4. The food storage bag A can be fixed in a predetermined position by gripping and fixing this support part 4. The support part 4 of the food storage bag A shown in Figure 1 has support holes 40, 40 that allow hooks or the like to be inserted, which are formed in a penetrating state between both sides of the support part 4, but the support holes 40, 40 do not have to be formed.

Furthermore, the support portion 4 is formed with a weakened portion 42 between the support holes 40, 40 and the first opening A12 of the storage portion A11 of the bag body A1 to separate the free end portion 41 including the support holes 40, 40 from the bag body A1, and is configured so that by pulling the bag body A1 to one side (in the direction away from the free end portion 41), the support portion 4 separates into two at the weakened portion 42, and the bag body A1 can be separated from the free end portion 41. The weakened portion 42 can have a general-purpose configuration, such as a perforation line or a weakened portion formed by reducing the strength of the backing film by heat.

In the above food storage bag A, the left side seal portion 32 constituting the storage section A11 is formed over the entire length of the front film 1, but the left side seal portion 32 does not need to be formed over the entire length of the front film 1. It is sufficient that the left side seal portion 32 is formed up to the vicinity of the other edge 11 of the front film 1 so that the other edge of the front film 1 constituting the first opening A12 of the storage section A11 does not accidentally turn up and expose the inside. In this case, the dimension between the other edge 11 of the front film 1 and the other edge of the opposing right side seal portion 33 is longer than the dimension between the other edge 11 of the front film 1 and the other edge of the opposing left side seal portion 32, so that the opening of the right half of the storage section A11 is larger than the opening of the left half. In this case, it goes without saying that the dimension between the other edge 11 of the front film 1 and the other edge of the opposing left seal portion 32 can be longer than the dimension between the other edge 11 of the front film 1 and the other edge of the opposing right seal portion 33, so that the opening of the storage portion A11 is configured so that the left half has a larger opening than the right half.

Next, a method for manufacturing food storage bags A will be described. As shown in Figure 3, a single, long, fixed-width raw film F made of synthetic resin (preferably thermoplastic resin) is continuously supplied, and the raw film F is folded continuously from the center in the width direction, one film portion partitioned around the folding portion F1 is designated as the first film F2, and the other film portion is designated as the second film F3. The first film F2 is superimposed on the second film F3 to continuously manufacture a laminated film G. At this time, the raw film F is folded so that the second film F3 protrudes from the free edge F21 of the first film F2 (lamination process).

In the above lamination process, a single long piece of original film F is folded from its center, but two long pieces of original film of different widths may be prepared, with the narrower film being the first film F2 and the wider film being the second film F3, and the first film F2 may be layered on top of the second film F3 with either edge of the first film F2 aligned in the width direction to produce the laminated film G in a continuous manner.

Next, if necessary, a first strip-shaped seal portion F4 is formed along the entire length of the folded portion F1 of the laminated film G. By forming the seal portion F4, one end of the storage portion A11 of the resulting food storage bag A is reinforced by the first strip-shaped seal portion F4, preventing damage to the storage portion A11 during or after the food is stored in the storage portion A11.

Furthermore, second strip-shaped seal portions F5, F5... are formed in parallel to each other at predetermined intervals in the length direction of the laminated film G. The second strip-shaped seal portion F5 is continuous with the folded portion F1 or the seal portion F4 of the laminated film G and is formed in the width direction of the laminated film G to reach the free edge F21 of the first film F2 or to the vicinity of the free edge F21. If the second strip-shaped seal portion F5 does not reach the free edge F21 of the first film F2 and is formed only to the vicinity of the free edge F21 of the first film F2, it is preferable to adjust the length (distance) between the other edge of the second strip-shaped seal portion F5 and the free edge F21 of the first film F2 so that the other edge of the surface film 1 constituting the first opening A12 of the storage portion A11 in the obtained food storage bag A does not accidentally roll up to expose the inner surface.

Furthermore, the second strip-shaped seal portion F5 has a seal escape portion F51 in the protruding direction of the second film F3 (upward in FIG. 4). The seal escape portion F51 is provided to allow the second strip-shaped seal portion F5 to escape at the other end when the laminated film G is cut along the cutting line H in the cutting process described below. The seal escape portion F51 has a width of approximately half the total width of the second strip-shaped seal portion F5, and is adjusted to a length equivalent to the opening width of the second opening A13 of the storage section A11 of the resulting food storage bag A (sealing process).

Next, as shown in FIG. 5, the laminated film G is cut across its entire width at the second strip-shaped seal portion F5 using a general-purpose cutting means such as a cutting blade. The cutting line H for cutting the laminated film G is a line passing through the seal clearance portion F51 of the second strip-shaped seal portion F5.

The cutting line H of the laminated film G only needs to pass through the seal escape F51 of the second strip-shaped seal portion F5, and since the seal escape F51 of the second strip-shaped seal portion F5 has a predetermined dimension in its width direction, the cutting line H of the laminated film G may vary slightly in the width direction of the second strip-shaped seal portion F5 within the range of the width dimension of the seal escape F51. Therefore, it is not necessary to strictly control the positional relationship between the laminated film G and the cutting means such as a cutting blade that cuts the laminated film G, and the laminated film G can be cut continuously using the laminated film G conveying means and cutting means that have been used conventionally. By cutting the laminated film G in the above-mentioned manner, the food storage bag A shown in Figure 1 can be continuously manufactured (cutting process).

In the obtained food storage bag A, the film portions obtained by cutting the first film F2 and the second film F3 become the front film 1 and the back film 2, respectively, and the back film portion protruding from the other edge 11 of the front film 1 constitutes the support portion 4. The second strip-shaped seal portion F5 is divided into two in the width direction by the cut line H that passes through the seal escape portion F51, and in the food storage bag A, the split seal portion of the second strip-shaped seal portion F5 that has a portion that reaches the other edge 11 of the front film 1 or extends to the vicinity of the other edge 11 constitutes the left seal portion 32, and the other split seal portion constitutes the right seal portion 33. Furthermore, the seal portion F4 constitutes the seal portion 31 formed at one end of the front and back films 1 and 2.

As shown in FIG. 6, if necessary, after stacking a number of food storage bags A, the other edge portions of the support portions 4 of the food storage bags A may be heat-sealed together to form a food storage bag bundle I, and support holes 40 (a pair of support holes 40, 40 in FIG. 6) may be formed that penetrate all of the support portions 4 of this food storage bag bundle I. Note that the support holes 40 do not necessarily have to be formed.

Next, how to use the food storage bag will be explained using food storage bag bundle I as an example. First, as shown in FIG. 7, the food storage bag bundle I is fixed in place by inserting a fastener J such as a hook through the support hole 40 of the food storage bag bundle I. If the food storage bag bundle I (food storage bag A) does not have a support hole, the support part of the food storage bag bundle I (food storage bag A) can be grasped and fixed using a general-purpose means.

Then, the other edge of the front film 1 constituting the storage section A11 of the topmost food storage bag A of the food storage bag bundle I is grasped to widen the first opening A12 and the second opening A13 of the storage section A11. At this time, the right corner 12 of the other edge of the front film 1 is not integrated with the back film 2 and is free, making it easy to grasp, and the first opening A12 and the second opening A13 of the storage section A11, especially the second opening A13, can be easily widened.

In addition, as described above, the right corner 12 at the other edge of the front film 1 is a free piece, so when gripped, it can be easily picked up by hand in a folded state with the outer surface protruding, and the first opening A12 and the second opening A13 of the storage section A11 can be widened without coming into contact with the inner surface of the storage section A11.

Next, as shown in Figures 7 and 8, food K is inserted into the storage section A11 of the food storage bag A through its first opening A12 and second opening A13. At this time, the second opening A13 of the storage section A11, which opens to the side, is widened, so food K, such as skewered food, can be smoothly inserted into the storage section A11 from an oblique direction without getting in the way of the support section 4 of the food storage bag A or the fastener J inserted through the insertion hole.

Since the food is inserted into the storage section A11 at an angle, when the food K is inserted into the storage section A11, the food K comes into sliding contact with the inner surface of the storage section A11, and a tensile force is applied to the food storage bag A in an oblique direction that moves it away from the support section 4 (fixing device J).

Therefore, the tensile force applied to the food storage bag A is first concentrated on the end of the weak portion 42 of the food storage bag A, and the weak portion 42 easily breaks from that end, and the subsequent tensile force easily breaks the bag body A1 in sequence along its length, allowing the bag body A1 to be easily separated from the weak portion 42 while food is being inserted into the storage portion A11.

Thereafter, the first opening A12 and the second opening A13 of the storage section A11 of the food storage bag A are closed with a general-purpose means L (e.g., adhesive tape, string, rubber band, etc.), thereby packaging the food hygienically and easily (see Figure 9).

Furthermore, because the food storage bag A is constructed by integrating the front and back films 1 and 2, it can be made flat before storing food in the storage section, and can be stored in the desired location without taking up too much space.

As shown in Figure 10, by adjusting the width and length of the front and back films 1 and 2, food storage bag A can be made to have a wide storage area, and can be used to package foods other than skewered foods (e.g., bread, rice balls, Japanese sweets, etc.). Note that food storage bag A shown in Figure 9 has the same structure as the food storage bag shown in Figure 1, except for the width and length of the front and back films 1 and 2, so the same reference numerals are used and their explanations are omitted.

1 Front film 2 Back film
31-33 Seal part 4 Support part
40 Support hole
41 Free end
42 Weakened part A Food storage bag
A1 Bag body
A11 Storage section
A12 First opening
A13 Second opening F Original film
F1 Bend
F2 1st film
F3 2nd Film
F4 Seal part
F5 Strip seal
F51 Seal escape G Laminated film H Cutting line I Food storage bag bundle J Fixing device K Food

Claims (7)

a bag body in which a front film and a back film are integrated at the left and right ends and one end to form a storage section between the opposing surfaces of the front and back films and an opening of the storage section is formed on the other end side;
a support portion formed by extending the back film of the bag body from the opening of the storage portion and having a weakened portion for separating the free end portion from the bag body,
The opening of the storage section includes a first opening formed by the other end of the front film and the back film facing the first opening, and a second opening formed on the side of the storage section, which is continuous with the first opening at either the left half or the right half of the first opening and into which all or part of the food can be inserted,
The opening of the storage section is configured so that one of the left half and the right half has a larger opening degree than the other, and the opening configured so as to have the larger opening degree is referred to as the second opening,
a corner portion at the other end edge portion of the front film constituting the second opening portion of the storage portion is made a free piece, and is configured so that the first opening portion and the second opening portion of the storage portion can be widened by pinching the corner portion in a state where the outer surface is protruding and folded;
The weakened portion is formed to extend in the left-right direction of the support portion ,
the end portion of the front film where the second opening is formed is entirely integrated with the back film except for the corners of the other edge portions;
The weakened portion is configured to break from an end portion by a diagonal tensile force away from the support portion caused by food inserted into the storage portion of the bag body through the second opening, thereby allowing the bag body to be separated . The food storage bag according to claim 1, characterized in that the weakened portion is a perforation line. The food storage bag according to claim 1 or 2, characterized in that the weakened portion is formed at a position spaced apart from the other edge of the outer film. A food storage bag according to any one of claims 1 to 3, characterized in that the left and right ends and one end of the front and back films are integrated by a strip-shaped seal portion. a lamination step of manufacturing a laminated film by overlapping a long first film and a long second film in a state in which the second film protrudes from an edge of the first film;
a sealing process for forming a band-shaped seal portion having a seal relief portion in a state where the first film and the second film are separated from each other by cutting out a part in the width direction of the first film and the second film at an end portion in a protruding direction of the second film at a predetermined interval in the longitudinal direction of the laminated film at an overlapping portion of the first film and the second film;
and a cutting process for cutting the laminated film at the strip-shaped seal portion along a cutting line that is oriented in the longitudinal direction of the strip-shaped seal portion and passes through the seal relief portion to produce a food storage bag,
the film portions formed by cutting the first film and the second film of the laminated film respectively become the front film and the back film of the food storage bag, and a storage section is formed between the opposing surfaces of the front and back films;
The band-shaped seal portion is divided in two in its width direction along a cutting line passing through the seal relief portion, and the two divided seal portions having different lengths are formed to constitute the left and right seal portions that constitute the storage portion,
The opening of the storage section includes a first opening formed by the other end of the front film and the back film facing the first opening, and a second opening formed on the side of the storage section, which is continuous with the first opening at either the left half or the right half of the first opening and into which all or part of the food can be inserted,
The opening of the storage section is configured so that one of the left half and the right half has a larger opening degree than the other, and the opening configured so as to have the larger opening degree is referred to as the second opening,
the seal relief portion of the strip-shaped seal portion is provided to allow the strip-shaped seal portion to escape at an end portion in a protruding direction of the second film when the laminate film is cut in the cutting step,
Among the divided seal portions, one short divided seal portion formed from a portion of the band-shaped seal portion in which the end portion in the protruding direction of the second film is entirely formed in the seal relief portion forms the second opening as one of the left and right seal portions, while the other long divided seal portion forms the other of the left and right seal portions ,
A method for manufacturing a food storage bag, characterized in that the end of the left and right ends of the front film where the second opening is formed is completely integrated with the back film, except for the corners of the other edges . The method for manufacturing food storage bags according to claim 5, characterized in that a single long piece of original film is folded in the width direction, one film portion partitioned by the fold of the original film is designated as the first film, the other film portion is designated as the second film, and the first film is superimposed on the second film to manufacture a laminated film. The method for manufacturing food storage bags according to claim 5 or 6, characterized in that the folded portion of the original film is heat sealed.

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