JP4456472B2 - Continuous manufacturing method for packaging bags - Google Patents

Description

  The present invention relates to a continuous manufacturing method for packaging bags. More specifically, the present invention relates to a continuous manufacturing method of a packaging bag that has an excellent aesthetic appearance, a good light product storage property, and can display a lot of information on the surface.

Small articles such as writing instruments, correction pens, adhesives, stripping liquids, and electrical parts are often stored in plastic film packaging bags and displayed or suspended at stores. Such a light product packaging form is required to have an excellent aesthetic in order to attract customers' eyes at the store. Further, it is required that the manufacturer can efficiently store the product in the packaging bag, and that the purchaser can easily take out the product and has good storage properties. Furthermore, as products become technically advanced, there is an increasing need to attach detailed explanations such as usage and precautions.
FIG. 10: is a rear view of an example of the conventional packaging bag, and an FF line cutting part end view. The packaging bag of this example stores products in a storage portion 57 between the front film 55 and the back film 56. Next, the release film 59 is peeled off from the tongue piece film 58 formed by extending the front film to expose the adhesive layer 60, the tongue piece film is bent to the back film side, and the adhesive film is formed at the lower end of the back film by the adhesive layer. Adhere and close the bag. At the upper part of the packaging bag, a header portion 62 is formed by being partitioned by a heat seal line 61, and a suspension hole 63 is provided in the header portion. In this example, the header tape 64 is sandwiched between the header portions, but the header tape is often omitted when the weight of the stored product is light.
The packaging bag of this example, for example, sends out a long plastic printing film printed on one side, and affixing a release tape having an adhesive layer on one side edge of the printing surface of the printing film, if necessary Adhere the header tape near the center of the printed film in the width direction, fold the film with the printing surface inside at one side edge of the header tape, polymerize the two sheets, and near the other side edge of the header tape It can be manufactured by forming a header part by linear heat sealing, opening a hanging hole, and fusing a polymerized film for each width of the bag.
The packaging bag of this example can store the product in the storage unit and close the bag body by adhering the tongue piece film to the back film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer. In many cases, the packaging bag of this example is printed with a product name or the like leaving a transparent portion on the front film so that the product can be seen from the outside, and the back film is printed with explanations such as usage and precautions. In order to make it easy to read the explanatory characters printed on the back film, solid printing such as white is applied from the top of the characters. However, in order to save costs, the solid printing is usually limited to the extent that the explanatory characters can be read, and is not thick enough to completely hide the characters. For this reason, when the packaging bag containing the product is viewed from the front, printing of the back film together with the product is reflected through the transparent portion of the front film, and the appearance is remarkably impaired.
In addition, since the space for printing the explanation is limited to the back film and the packaging bag for small articles of light goods is not large, the contents of the explanation are limited or the letters of the explanation become very small. In some cases, the explanation sheet is printed on paper with a size slightly smaller than that of the packaging bag, and the explanation sheet is prepared and inserted into the packaging bag, thereby eliminating the shortage of explanation space and the problem of printing on the back film. Although it can be seen, the production of the explanatory sheet and its insertion into the packaging bag takes time and leads to high costs.

  The present invention has been made for the purpose of providing a continuous manufacturing method of a packaging bag that has excellent aesthetics, has good light product storage properties, and can display a large amount of information on the surface. .

As a result of intensive research to solve the above-mentioned problems, the present inventor performed printing on one side of a long transparent plastic film, and the printed film was composed of three films including a front film, a back film, and an intermediate film. By using a polymerized film, the intermediate film can be used as a printing surface to increase the printing space, and the intermediate film can prevent the back film from being printed on the front film, thereby enhancing the aesthetics of the packaging bag. As a result, the present invention has been completed based on this finding.
That is, the present invention
( 1 ) (H) Step of sending out a long transparent plastic printing film printed on one side, (J) Folding 1/3 of the width of the printing film with the printing surface facing inward from one end of the printing film (K) a step of polymerizing three films, (K) superposing one third of the print film width on the two films with the printing surface facing inward from the other end of the print film, L) Step of forming a header part by linearly heat-sealing the vicinity of the crease formed in step (K) of the three polymerized films, and (M) slitting the vicinity of the header part heat-sealing line. Forming the opening, (N) sealing the bottom of the bag by linearly heat-sealing the other ends of the three polymerized films, and (O) a release tape having an adhesive layer The attached tongue film covers the opening and is melted in the header. To process, and, (P) for each width of the bag body, a continuous production method of a packaging bag characterized by having a step of blowing the polymerized film,
( 2 ) (I) The continuous manufacturing method of the packaging bag as described in ( 1 ) which has the process of adhere | attaching a header tape on the side edge of the end of a printing film,
( 3 ) The continuous production method of a packaging bag according to ( 1 ) or ( 2 ), wherein another film is laminated on the printing surface of the plastic printing film,
( 4 ) (h) A step of sending out a long transparent plastic printing film printed on one side, (j) 2 to 1/3 of the width of the printing film with the printing surface facing inward from one end of the printing film (K) a step of polymerizing three films by superimposing one third of the width of the printed film on the two films with the printing surface facing inward from the other end of the printed film, l) Step of forming a header portion by linearly heat-sealing the vicinity of the fold formed in the step (k) of the three polymerized films, and (m) the outer side of the polymerized in the step (j) Slitting the vicinity of the heat seal line of the header of the film to form an opening; (n) a tongue film with a release tape having a pressure-sensitive adhesive layer adhered to the header covering the opening And (o) polymerization is performed for each width of the bag body. The method of continuous production packaging bag characterized by having a step of blowing the film,
( 5 ) (i) A method for continuously producing a packaging bag according to ( 4 ), comprising a step of adhering a header tape to a side edge of one end of the printed film, and
( 6 ) A continuous production method of a packaging bag according to ( 4 ) or ( 5 ), wherein another film is laminated on the printing surface of the plastic printing film,
Is to provide.

  According to the continuous manufacturing method of the packaging bag of the present invention, it is possible to manufacture a packaging bag that has an excellent aesthetic appearance, a good storage property for light products, and can display a lot of information on the surface.

The first reference example of the continuous manufacturing method of the packaging bag of the present invention includes (A) a step of sending out a long transparent plastic printing film printed on one side, and (B) one side edge of the printing surface of the printing film. Step of attaching a release tape having a pressure-sensitive adhesive layer, (D) From the side where the release tape is not attached, the printed surface is set to the inside, and a little less than one-third of the width of the printed film is folded back. (E) The film on the side to which the release tape is attached is removed from the polymerization tape, the release tape attachment part is removed from the polymerization part, and the printed surface is placed on the two films, and the film 3 A step of polymerizing the sheets, (F) a step of linearly heat-sealing the three polymerized films on the side where the release tape is not attached to form a header portion, and (G) a bag body For each width, the method includes fusing the polymerized film. In this embodiment, it is possible to further add (C) a step of adhering a header tape to the other side edge of the printing film.
In the method of the present invention, the order of steps (A) to (G) can be changed. For example, (B) a step of adhering a release tape having an adhesive layer to one side edge of a printing surface of a printing film and (C) a step of adhering a header tape to the other side edge of the printing film, Either can be performed first, or the steps (B) and (C) can be performed simultaneously. Moreover, (B) the process of sticking the peeling tape which has an adhesive layer on one side edge of the printing surface of a printing film is the process before (G) fusing the polymerized film for every width | variety of a bag body For example, it can be performed after step (D), after step (E), or after step (F). In this case, the film on the side on which the release tape is attached means the film on the side on which the release tape is to be attached.

FIG. 1 is an explanatory view of a first reference example of the present invention, and this figure represents a cut end face in the width direction of a long transparent plastic printing film. A long transparent plastic printing film 1 printed on one side is sent out in a state of being spread in the width direction as shown in FIG. In this figure, the printing surface is on the upper side. A release tape 3 having an adhesive layer 2 is attached to one side edge of the printing surface of the printing film. If necessary, the header tape 4 can be bonded to the other side edge of the printing film. (B) shows a state in which a release tape having an adhesive layer is adhered to one side edge of the printing surface of the printing film, and a header tape is adhered to the other side edge. Next, from the side where the release tape is not attached, the printed surface is set to the inner side, and a little less than one third of the width of the printed film is folded to superpose the two films to obtain the state shown in (c). The folded portion becomes the intermediate film 5 of the packaging bag.
Next, the film on the side to which the release tape 3 is attached is removed from the polymerization portion with the release tape attachment portion, and the print surface is set to the inside, and the two films are overlapped to superpose the three films. ). Since the width of the film to be polymerized is a little less than one third of the width of the printed film, the part where the release tape is attached is removed from the polymerized part. The newly polymerized part becomes the front film 6 of the packaging bag, the part between the front film and the intermediate film becomes the back film 7, and the part to which the release tape removed from the polymerized part is attached is the tongue piece film 8. Become. Further, the three polymerized films are heat-sealed linearly on the side where the release tape is not adhered, and the header portion 10 is formed by the heat-sealed wire 9 to obtain the state shown in (e). If necessary, a hanging hole is formed in the header portion, and then the polymerized film is melted for each width of the bag body to complete a packaging bag.

FIG. 2 is a rear view of one embodiment of a packaging bag manufactured according to the first reference example of the present invention and an end view taken along the line AA. The packaging bag of this embodiment includes an intermediate film 5, a front film 6, a back film 7, a tongue piece film 8, a heat seal line 9, and a header portion 10. A release tape 3 having an adhesive layer 2 is attached to the tongue piece film. A header tape 11 is sandwiched between the header portions and a suspension hole 12 is opened. Weight and of products for storage, due to the exhibition form of goods, f Tsu Dashito and Tsushitaana may be omitted.
In the packaging bag of this aspect, the space between the intermediate film 5 and the front film 6 serves as a storage unit 13 for storing products. After storing the product in the storage section, the release tape 3 is peeled off from the tongue piece film 8 formed by extending the front film to expose the adhesive layer 2, and the tongue piece film is bent to the back film side, and the back film The bag is closed by adhering to the lower end of the bag with an adhesive layer. The packaging bag according to this aspect can store the product in the storage unit and close the bag body by adhering the tongue piece film to the back film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer.

Since the packaging bag of this aspect can be printed on a total of three surfaces, that is, the back surface of the front film and the inner surface on the side where the intermediate film and the back film are in contact, it has a wide print surface and can transmit a lot of information. it can. For example, the product name etc. are printed on the front film so that the product can be seen from the outside, and the product name is printed on the back film. You can print a design to show off and attract the eyes of consumers. Alternatively, if the explanation cannot be printed on the back film, the explanation can be printed on the intermediate film, and the explanation of the intermediate film can be read by removing the front film at both fusing edges.
Since the packaging bag of this aspect performs printing of an intermediate film, a front film, and a back film on a long transparent plastic film at the same time, there is no possibility of causing printing misalignment between the intermediate film, the front film, and the back film. It is preferable that the packaging bag of this aspect performs solid printing, such as white, on a pattern, a character, etc. of an intermediate | middle film and a back film. By printing a solid print on the intermediate film and the back film, when the packaging bag containing the product is viewed from the front, the characters such as the back film are printed through the two layers of the back film and the intermediate film. Through the transparent part of the front film, the back film print hardly appears, and the packaging bag has an excellent aesthetic appearance.

In the first reference example of the method of the present invention, a printing film in which another film is laminated on the printing surface of the plastic printing film can be used. The lamination of the other film can be applied to the entire surface of the long transparent plastic printing film, or can be applied only to the portion corresponding to the front film of the packaging bag. When the packaging bag manufactured by the first reference example of the method of the present invention stores the product and closes the bag body, the printing surface is not exposed to the outside of the packaging bag, so the printing surface is scratched from the outside. There is no. However, when goods are stored in the storage unit and transported, the goods and the printing surface may come into contact with each other and scratches may occur. By laminating another film on the printing surface, it is possible to prevent scratches due to contact between the product and the printing surface.
FIG. 3: is the rear view of the other aspect of the packaging bag manufactured by the 1st reference example of this invention, and a BB line | wire cut part end surface figure. In the packaging bag of this aspect, the adhesive layer 2 and the peeling tape 3 are provided below the back film. After the product is stored in the storage unit 13, the release tape 3 is peeled off from the back film 7 to expose the adhesive layer 2, and the tongue film 8 formed by extending the front film is bent to the back film side, and the back film The bag is closed by adhering to the lower end of the bag with an adhesive layer. The packaging bag according to this aspect can store the product in the storage unit and close the bag body by adhering the tongue piece film to the back film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer. In the method for producing the packaging bag of this embodiment, the peeling having the pressure-sensitive adhesive layer at a position about one third of the width of the printing film from the side edge of the printing film, not one side edge of the printing surface of the printing film. Affix the tape. This manufacturing method is equivalent to the method of the present invention and belongs to the technical scope of the method of the present invention.

The second reference example of the continuous manufacturing method of the packaging bag of the present invention is: (a) a step of sending out a long transparent plastic printing film printed on one side and laminated with another film thereon; (b) A step of adhering a release tape having an adhesive layer to one side edge of the non-print surface of the print film, (d) from the side where the release tape is not attached, with the print surface facing inward, the print film width A process of folding two films by folding a little less than one third of the film, (e) removing the film on the side to which the release tape is attached, removing the release tape application part from the polymerization part, and the printing surface to the outside , Superimposing the two films on top of each other, polymerizing the three films, (f) forming a header by linearly heat-sealing the three polymerized films on the side where the release tape is not affixed And (g) polymerization for each width of the bag body. A step of blowing the film. In this embodiment, a step of (c) adhering a header tape to the other side edge of the printing film can be added.
In the method of the present invention, the order of steps (a) to (g) can be changed. For example, (b) a step of attaching a release tape having an adhesive layer to one side edge of the non-printing surface of the printing film, and (c) bonding a header tape to the other side edge of the printing surface of the printing film Any of the steps can be performed first, or step (b) and step (c) can be performed simultaneously. Moreover, (b) the process of sticking the peeling tape which has an adhesive layer to one side edge of the non-printing surface of a printing film is the process of fusing the polymerized film for every width | variety of a bag body For example, it can be performed at any stage before, for example, after step (d), after step (e), or after step (f). In this case, the film on the side on which the release tape is attached means the film on the side on which the release tape is to be attached.

FIG. 4 is an explanatory view of a second reference example of the method of the present invention, and this figure represents the end face in the width direction of a long transparent plastic printing film. A long transparent plastic printing film 14 printed on one side and laminated with another film thereon is sent out in a state of being spread in the width direction as shown in FIG. In this figure, the printing surface is on the upper side. If necessary, the header tape 15 can be bonded to one side edge of the printing film. (B) shows a state in which the header tape is bonded to one side edge of the printing surface of the printing film. Next, from the side where the header tape is bonded, the printing surface is set to the inside, and a little less than one third of the width of the printing film is folded to superpose the two films to obtain the state shown in (). The folded portion becomes the back film 16 of the packaging bag.
Next, remove the film on the side to which the header tape is not adhered from the polymerization part, overlap the two films with the printing surface outside, and superimpose the three films. State shown. Since the width of the film to be polymerized is a little less than one third of the width of the printed film, the edge portion of the film deviates from the polymerized part. The newly polymerized portion becomes the front film 17 of the packaging bag, the portion between the front film and the back film becomes the intermediate film 18, and the portion removed from the overlapped portion becomes the tongue piece film 19. A release tape 21 having an adhesive layer 20 is attached to the tongue piece film that has been removed from the polymerized portion, and the state shown in FIG. Further, the three polymerized films are heat-sealed linearly on the side where the release tape is not adhered, and the header portion 23 is formed by the heat-sealed wire 22 to obtain the state shown in (f). If necessary, a hanging hole is formed in the header portion, and then the polymerized film is melted for each width of the bag body to complete a packaging bag.

FIG. 5 is a rear view of another embodiment of the packaging bag manufactured by the second reference example of the method of the present invention and an end view of the CC line cutting part. The packaging bag of this aspect includes a back film 16, a front film 17, an intermediate film 18, a tongue piece film 19, a heat seal line 22, and a header portion 23. A release tape 21 having an adhesive layer 20 is attached to the tongue piece film. A suspension hole 24 is formed in the header portion, but the suspension hole can be omitted depending on the display form of the product.
In the packaging bag of this mode, the space between the front film 17 and the intermediate film 18 is a storage unit 25 that stores products. After storing the product in the storage section, the release tape 21 is peeled off from the tongue piece film 19 formed by extending the front film to expose the adhesive layer 20, and the tongue film is bent to the back film side, The bag is closed by adhering to the lower end of the bag with an adhesive layer. The packaging bag according to this aspect can store the product in the storage unit and close the bag body by adhering the tongue piece film to the back film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer.
Since the packaging bag of this aspect can print on a total of three surfaces, the surface of a front film and the inner surface on the side where an intermediate film and a back film contact, it has a wide printing surface and can transmit a lot of information. it can. For example, the product name etc. are printed on the front film so that the product can be seen from the outside, and the product name is printed on the back film. You can print a design to show off and attract the eyes of consumers. Alternatively, if the explanation cannot be printed on the back film, the explanation can be printed on the intermediate film, and the explanation of the intermediate film can be read by removing the front film at both fusing edges.

Since the packaging bag of this aspect performs printing of an intermediate film, a front film, and a back film on a long transparent plastic film at the same time, there is no possibility of causing printing misalignment between the intermediate film, the front film, and the back film. It is preferable that the packaging bag of this aspect performs solid printing, such as white, on a pattern, a character, etc. of an intermediate | middle film and a back film. By printing a solid print on the intermediate film and the back film, when the packaging bag containing the product is viewed from the front, the characters such as the back film are printed through the two layers of the back film and the intermediate film. Through the transparent part of the front film, the back film print hardly appears, and the packaging bag has an excellent aesthetic appearance.
The packaging bag manufactured by the second reference example of the method of the present invention does not have a printing surface on the inner surface of the storage portion between the front film and the intermediate film. Therefore, since the printing surface is not scratched by the contact between the product stored in the storage unit and the printing surface, there is a risk of scratching the printing surface of a product having a sharp corner or a product having a rough surface. It can be suitably used for storing products. Since the printing surface of the front film is exposed to the outside of the packaging bag, in order to prevent the printing surface from being scratched from the outside, at least a portion that becomes the front film is laminated with another film on the printing.

The first aspect of the continuous manufacturing method of the packaging bag of the present invention is (H) a step of sending out a long transparent plastic printing film printed on one side, (J) with the printing surface facing inward from one end of the printing film. A step of folding back one third of the width of the printing film to polymerize the two films, (K) with the printing surface facing inward from the other end of the printing film, A step of superimposing three films on the film, (L) forming a header portion by linearly heat-sealing the vicinity of the fold formed in the step (K) of the three polymerized films, (M) a step of slitting the vicinity of the header heat seal line to form an opening, (N) a step of linearly heat sealing the other end of the three polymerized films to seal the bottom of the bag body (O) Tongue piece film to which a release tape having an adhesive layer is attached Covering the opening and welding to the header, and (P) fusing the polymerized film for each width of the bag. In this embodiment, a step of (I) adhering a header tape to the side edge of one end of the printing film can be further added.
In the method of the present invention, the order of the steps from (H) to (P) can be changed. For example, (M) the step of slitting the vicinity of the heat seal line of the header portion to form the opening portion is (L) the vicinity of the crease formed in the step (K) of the three polymerized films is linear. It can also be performed prior to the step of heat-sealing to form the header portion, or (N) the step of linearly heat-sealing the other end of the three polymerized films to seal the bottom of the bag body. It can be done later. (L) the step of forming a header portion by linearly heat-sealing the vicinity of the fold formed in the (K) step of the three polymerized films; and (N) the three polymerized films. The process of sealing the bottom of the bag by linearly heat-sealing the other end of the film can be preceded by any process, and the process (L) and (N) can be performed simultaneously. .

FIG. 6 is an explanatory view of the first embodiment of the method of the present invention, and this figure represents the end face of the long transparent plastic print film in the width direction. A long transparent plastic printing film 26 printed on one side is sent out in a state of being spread in the width direction as shown in FIG. In this figure, the printing surface is on the upper side. If necessary, the header tape 27 can be bonded to the side edge of one end of the printing film. The header tape can be bonded to either the printed surface or the non-printed surface. In the state shown in (h), the header tape is bonded to the printing surface. With one side of the print film facing the print surface inside, one third of the width of the print film is folded back to superpose the two films to the state shown in (i). The folded portion becomes the intermediate film 28 of the packaging bag.
Next, with the printing surface facing inward from the other end of the printing film, 1/3 of the printing film width is superimposed on the two films, and the three films are polymerized to obtain the state shown in (n). The newly polymerized portion becomes the front film 29 of the packaging bag, and the portion between the front film and the intermediate film becomes the back film 30. The three films thus polymerized are heat-sealed linearly in the vicinity of the folds of the front film, and the header portion 32 is formed by the heat-sealed wire 31 to obtain the state shown in (l).
Next, the front film in the vicinity of the header part heat seal line is slit to form the opening 33 to the state shown in (v), and the three films polymerized at the end opposite to the header part are linearized. Heat sealing is performed, and the bottom of the bag body is sealed with the sealing wire 34 to obtain the state shown in (a). Further, the tongue piece film 37 to which the release tape 36 having the adhesive layer 35 is attached is welded to the header portion so as to cover the opening portion, and the state shown in FIG. If necessary, a suspension hole is opened in the header portion in an arbitrary step after the three films are polymerized, and the polymerized film is melted for each width of the bag body to complete a packaging bag.

FIG. 7: is the front view and DD line cutting part end view of the other aspect of the packaging bag manufactured by this invention method. The packaging bag of this embodiment has an adhesive film 35 covered with an intermediate film 28, a front film 29, a back film 30, a sealing wire 34, a heat seal wire 31, a header portion 32, an opening portion 33 and a release tape 36. The tongue film 37 is attached and welded to the header portion. A header tape 38 is sandwiched between the header portions, and a suspension hole 39 is opened. Depending on the weight of the product to be stored, the display form of the product, etc., the header tape and the suspension hole can be omitted.
In the packaging bag of this mode, the space between the intermediate film 28 and the front film 29 is a storage unit 40 that stores products. After storing the product in the storage portion from the opening, the release tape 36 is peeled off from the tongue piece film 37 to expose the adhesive layer 35, and the bag body is closed by adhering the tongue piece film to the front film by the adhesive layer. . The packaging bag of this embodiment can store the product in the storage unit and close the bag body by adhering the tongue piece film to the front film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer.

Since the packaging bag of this aspect can be printed on a total of three surfaces, that is, the back surface of the front film and the inner surface on the side where the intermediate film and the back film are in contact, it has a wide print surface and can transmit a lot of information. it can. For example, the product name etc. are printed on the front film so that the product can be seen from the outside, and the product name is printed on the back film. You can print a design to show off and attract the eyes of consumers. Alternatively, if the explanation cannot be printed on the back film, the explanation can be printed on the intermediate film, and the explanation of the intermediate film can be read by removing the front film at both fusing edges.
Since the packaging bag of this aspect performs printing of an intermediate film, a front film, and a back film on a long transparent plastic film at the same time, there is no possibility of causing printing misalignment between the intermediate film, the front film, and the back film. It is preferable that the packaging bag of this aspect performs solid printing, such as white, on a pattern, a character, etc. of an intermediate | middle film and a back film. By printing a solid print on the intermediate film and the back film, when the packaging bag containing the product is viewed from the front, the characters such as the back film are printed through the two layers of the back film and the intermediate film. Through the transparent part of the front film, the back film print hardly appears, and the packaging bag has an excellent aesthetic appearance.

In the first aspect of the method of the present invention, a printing film in which another film is laminated on the printing surface of the plastic printing film can be used. The lamination of the other film can be applied to the entire surface of the long transparent plastic printing film, or can be applied only to the portion corresponding to the front film of the packaging bag. When the packaging bag manufactured according to the first aspect of the method of the present invention stores the product and closes the bag body, the printing surface is not exposed to the outside of the packaging bag, so the printing surface is scratched from the outside. There is no. However, when goods are stored in the storage unit and transported, the goods and the printing surface may come into contact with each other and scratches may occur. By laminating another film on the printing surface, it is possible to prevent scratches due to contact between the product and the printing surface.

The second aspect of the continuous manufacturing method of the packaging bag of the present invention is: (h) a step of sending out a long transparent plastic printing film printed on one side; (j) the printing surface facing inward from one end of the printing film. A step of folding back one third of the width of the printing film to superimpose two films, (k) with the printing surface facing inward from the other end of the printing film, A step of superposing three films on the film, (l) a step of linearly heat-sealing the vicinity of the fold formed in the step (k) of the three polymerized films to form a header portion, (m) a step of slitting the vicinity of the header heat seal line of the outer film polymerized in the step (j) to form an opening, (n) a tongue piece to which a release tape having an adhesive layer is attached A process of covering the opening and welding the film to the header And (o) a step of fusing the polymerized film for each width of the bag. In this embodiment, a step of (i) adhering a header tape to the side edge of one end of the printed film can be added.
In the method of the present invention, the order of steps (h) to (o) can be changed. For example, (m) the process of slitting the vicinity of the heat seal line of the header part to form the opening is (1) the vicinity of the crease formed in the process (k) of the three polymerized films is linear. It can carry out before the process of heat-sealing and forming a header part.

FIG. 8 is an explanatory diagram of the second embodiment of the method of the present invention, and this figure represents the end face of the long transparent plastic print film in the width direction. A long transparent plastic printing film 41 printed on one side is sent out in a state of being spread in the width direction as shown in (and). In this figure, the printing surface is on the upper side. If necessary, the header tape 42 can be adhered to the side edge of one end of the printing film. The header tape can be bonded to either the printed surface or the non-printed surface. In the state shown in (C), the header tape is bonded to the printing surface. With one side of the printing film facing the printing surface inside, one third of the width of the printing film is folded back to polymerize the two films to the state shown in (ri). The folded portion becomes the intermediate film 43 of the packaging bag.
Next, with the printing surface facing inward from the other end of the printing film, one third of the printing film width is overlaid on the two films, and the three films are polymerized to the state shown in (n). The newly polymerized portion becomes the back film 44 of the packaging bag, and the portion between the back film and the intermediate film becomes the front film 45. The three polymerized films are heat-sealed in the vicinity of the folds of the front film in a linear form, and the header portion 47 is formed by the heat-seal line 46, and the state shown in FIG.
Next, the front film in the vicinity of the header heat seal line is slit, the opening 48 is formed to the state shown in (), and further, the tongue piece film to which the peeling tape 50 having the adhesive layer 49 is attached. 51 is welded to the header portion so as to cover the opening, and the state shown in FIG. If necessary, a suspension hole is opened in the header portion in an arbitrary step after the three films are polymerized, and the polymerized film is melted for each width of the bag body to complete a packaging bag.

FIG. 9 is a front view of another embodiment of the packaging bag manufactured by the method of the present invention and an end view of the EE line cutting part. The packaging bag of this aspect has an adhesive film 49 covered with an intermediate film 43, a back film 44, a front film 45, a heat seal wire 46, a header portion 47, an opening 48 and a release tape 50, and is attached to the header portion. The tongue piece film 51 is welded to each other. A header tape 52 is sandwiched between the header portions, and a suspension hole 53 is opened. Depending on the weight of the product to be stored, the display form of the product, etc., the header tape and the suspension hole can be omitted.
In the packaging bag of this aspect, the space between the intermediate film 43 and the front film 45 is a storage portion 54 that stores the product. After storing the product in the storage portion from the opening, the peeling tape 50 is peeled off from the tongue piece film 51 to expose the adhesive layer 49, and the bag body is closed by adhering the tongue piece film to the front film with the adhesive layer. . The packaging bag of this embodiment can store the product in the storage unit and close the bag body by adhering the tongue piece film to the front film, and the purchaser can remove the bag piece by peeling the tongue piece film. The product can be taken out by opening and the opening and closing of the tongue piece film can be repeated using the adhesive layer.

Since the packaging bag of this aspect can be printed on a total of three surfaces including the back surface of the front film, the surface in contact with the front film of the intermediate film, and the surface in contact with the intermediate film of the back film, it has a wide printing surface. A lot of information can be transmitted. For example, the product name etc. are printed on the front film so that the product can be seen from the outside, and the product name is printed on the back film. You can print a design to show off and attract the eyes of consumers. Alternatively, if the explanation cannot be printed on the back film, the explanation can be printed on the intermediate film, and the explanation of the intermediate film can be read by removing the front film at both fusing edges.
Since the packaging bag of this aspect performs printing of an intermediate film, a front film, and a back film on a long transparent plastic film at the same time, there is no possibility of causing printing misalignment between the intermediate film, the front film, and the back film. The packaging bag of this aspect may be printed with a pattern such as white on the intermediate film and printed with a pattern, letters, etc. preferable. By printing a solid print on the intermediate film and the back film, when the packaging bag containing the product is viewed from the front, the characters such as the back film are printed through the two layers of the back film and the intermediate film. Through the transparent part of the front film, the back film print hardly appears, and the packaging bag has an excellent aesthetic appearance.

In the second embodiment of the method of the present invention, a printing film in which another film is laminated on the printing surface of the plastic printing film can be used. The lamination of the other film can be applied to the entire surface of the long transparent plastic printing film, or can be applied only to the portion corresponding to the front film and the intermediate film of the packaging bag. When the packaging bag manufactured by the second aspect of the method of the present invention stores the product and closes the bag body, the printing surface is not exposed to the outside of the packaging bag, so the printing surface is scratched from the outside. There is no. However, when goods are stored in the storage unit and transported, the goods and the printing surface may come into contact with each other and scratches may occur. By laminating another film on the printing surface, it is possible to prevent scratches due to contact between the product and the printing surface.

  The packaging bag manufactured by the method of the present invention has an excellent aesthetic appearance, a good storage property for light products, and can display a lot of information on the surface.

It is explanatory drawing of the 1st reference example of this invention method. It is the rear view and cutting | disconnection part end view of one aspect | mode of the packaging bag manufactured by the 1st reference example of this invention method. It is the rear view and cutting part end view of the other aspect of the packaging bag manufactured by the 1st reference example of this invention method. It is explanatory drawing of the 2nd reference example of this invention method. It is the rear view of the other aspect of the packaging bag manufactured by the 2nd reference example of the method of this invention, and a cutting part end view. It is explanatory drawing of the 1st aspect of this invention method. It is the front view and cutting part end view of the other aspect of the packaging bag manufactured by the 1st aspect of this invention method. It is explanatory drawing of the 2nd aspect of this invention method. It is the front view and cutting part end view of the other aspect of the packaging bag manufactured by the 2nd aspect of this invention method. It is the rear view and cutting part end elevation of an example of the conventional packaging bag.

DESCRIPTION OF SYMBOLS 1 Plastic printing film 2 Adhesive layer 3 Peeling tape 4 Header tape 5 Intermediate film 6 Front film 7 Back film 8 Tongue piece film 9 Heat seal line 10 Header part 11 Header tape 12 Hanging hole 13 Storage part 14 Plastic printing film 15 Header Tape 16 Back film 17 Front film 18 Intermediate film 19 Tongue piece film 20 Adhesive layer 21 Peeling tape 22 Heat seal line 23 Header part 24 Suspension hole 25 Storage part 26 Plastic printing film 27 Header tape 28 Intermediate film 29 Front film 30 Back face Film 31 Heat seal line 32 Header part 33 Opening 34 Sealing line 35 Adhesive layer 36 Peeling tape 37 Tongue piece film 38 Header tape 39 Suspension hole 40 Storage part 41 Plus Printing film 42 header tape 43 intermediate film 44 back film 45 front film 46 heat seal line 47 header section 48 opening 49 adhesive layer 50 release tape 51 tongue piece film 52 header tape 53 hanging hole 54 storage section 55 front film 56 Back film 57 Storage part 58 Tongue piece film 59 Release film 60 Adhesive layer 61 Heat seal wire 62 Header part 63 Hanging hole 64 Header tape

Claims (6)

  (H) A step of sending out a long transparent plastic printing film printed on one side, (J) Two films by folding back one third of the printing film width with the printing surface facing inward from one end of the printing film (K) the step of polymerizing three films by superimposing one third of the print film width on the two films, with the printing surface facing inward from the other end of the print film, (L) polymerization The step of forming a header portion by linearly heat-sealing the vicinity of the crease formed in the step (K) of the three films formed, and (M) opening the opening portion by slitting the vicinity of the header portion heat-sealing line (N) Step of sealing the bottom of the bag body by linearly heat-sealing the other end of the three polymerized films, (O) A release tape having an adhesive layer was attached Place the tongue film over the opening A step of welding the loaders unit, and, (P) for each width of the bag body, continuous process of the packaging bag, characterized in that it comprises a step of blowing the polymerized film. (I) the side edges of one end of the printed film, continuous process of the packaging bag of claim 1 further comprising a step of bonding the header tape. The continuous manufacturing method of the packaging bag of Claim 1 or Claim 2 by which another film is laminated on the printing surface of a plastic printing film.   (H) a step of sending out a long transparent plastic printing film printed on one side, (j) two films by folding back one third of the printing film width with the printing surface facing inward from one end of the printing film (K) a step of superposing one third of the print film width on the two films with the other side of the print film facing inward, and polymerizing three films, (l) polymerization The step of forming a header portion by linearly heat-sealing the vicinity of the crease formed in the step (k) of the three films formed, the header of the outer film polymerized in the step (m) (j) Slitting the vicinity of the part heat seal line to form an opening, (n) a step of welding a tongue piece film to which a release tape having an adhesive layer is adhered, covering the opening to the header part, And (o) for each width of the bag A method for continuously producing a packaging bag, comprising a step of fusing a polymerized film. (I) The continuous manufacturing method of the packaging bag of Claim 4 which has the process of adhere | attaching a header tape on the side edge of the end of a printing film. The continuous manufacturing method of the packaging bag of Claim 4 or Claim 5 by which another film is laminated on the printing surface of a plastic printing film.