JP3084361B2 - Hooked bag and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag with hooks for displaying and selling products in stores with the products packaged, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Various bags have been proposed by the present applicant for display and sale at stores in a state where the products are packaged. However, in general, at least a thick sheet-like core material constituting a header portion is provided. A bag formed by forming a bag body with the thin front and back films provided with the core material interposed therebetween, and welding the front and back films including the core material by side seals along both side edges of the bag body is the mainstream. Has formed.

A bag having a header portion made of such a sheet-shaped core material is hung by a hanging rod in a store through a hanging hole formed in the header portion.

[0004] However, in a sales display mode in which a large number of bags are hung by inserting a hanging rod through such a hanging hole, it is necessary to take out the bags in order from the bag at the front when taking out the bags from the hanging rod. There is an inconvenience that the bag at the back cannot be taken out immediately.

[0005] For this reason, in recent years, bags provided with a hook portion in a header portion have gained a good reputation, and the present applicant has made various proposals.

[0006]

When the hook portion is provided in the header portion, a hook member separate from the bag is generally formed by injection molding or the like, and the hook member is inserted into an insertion hole provided in the header portion of the bag. Is known in the art.

However, when the hook member is formed by injection molding or the like, not only is the material cost and equipment expensive, but also a separate hook member must be individually attached to the bag. , A lot of work costs.

Accordingly, the present applicant supplies a tape-shaped core material to a header portion of a bag in a bag making process,
A technique in which the tape-shaped core material is welded to the header portion and punched out to thereby provide a hook portion has been previously proposed.

However, such a tape-shaped core material is supplied so as to intersect with the transport direction of the bag during bag making, and at the same time, a hook portion is formed by welding and punching a predetermined portion of the bag header portion. However, not only the equipment becomes large, but also a precise device with high positioning accuracy of the core material is required.

Further, in order to form a hook portion satisfying a desired strength, special consideration is required for the thickness, material, and the like of the tape-shaped core material, which hinders cost reduction.

Further, the hook portion has only a hook-specific function and does not have versatility. In other words, when a synthetic resin plate such as a relatively thick synthetic paper is used as the tape-shaped core material, it is difficult to print a display such as an advertisement or a product description on the surface. It is inevitable to have a solid color without display printing. In this regard, even if it is possible to perform display printing on the core material,
Since the film constituting the bag and the core material constituting the hook are separate bodies and do not have continuity, the display printed on the hook and the display printed on the film of the bag are represented in series. Is extremely difficult, and there is a problem that the appearance is impaired.

[0012]

SUMMARY OF THE INVENTION The present invention provides a bag with a hook and a method for producing the same, which solves the above-mentioned problems.

[0013] In view of the above, the bag with hooks of the present invention is configured as a means by using a thick sheet-like core material constituting at least a header portion and a thin front and back film provided with the core material interposed therebetween. In a bag which comprises a body and is formed by welding the front and back films including the core material along both side edges of the bag body, the superposed portions of the front and back films 5 and 6 superposed on the header portion 2 of the core material 4 provided with a plate-like portion 13 which is integrally welded over the entire surface of the header portion, the plate portion 13
The front and back films 5 and 6 are placed in the vicinity and spread over the entire width of the bag.
The plate- shaped portion 1 is provided with a welding fixing wire 14 welded to the core material 4.
Become comprises a third hook portion 15 which is punched forming, the full
The hook portion 15 is connected to the hook-shaped portion 15a and the hook-shaped portion 15a.
And extends almost the full width of the bag along the welding fixing line 14
15b, and both ends in the width direction of the continuous portion 15b are
Sloped shoulders 15c, 1
5c, and the welding fixing line 14 is inclined by a sloped shoulder 15c.
15c .

[0014]

Further, the bag with a hook according to the present invention is manufactured.
This method is configured as a long strip-shaped thick sheet-shaped core material 4a constituting at least the header portion 2a, and a long strip-shaped thin front and back film 5a polymerized from the front and back with the core material interposed therebetween. , 6a; and a side sealing step of fusing and welding the front and back films including the core material at predetermined intervals in the band longitudinal direction and in the band width direction. In: Before performing the side sealing step, the front and back films 5a and 6a are positioned near the header 2a and the core material 4
After the film fixing step; toward the band longitudinal direction for the a film fixing allowed to weld 14a linearly step and
Front and back film 5 polymerized on header portion 2a of core material 4a
a, 6a through a pair of hot plates to the header 2
The plate-like portion 1 is welded and integrated over the entire front and back surfaces of a.
A welding integration step for forming 3a; immediately after the welding integration step, the plate-shaped portion 13a is quickly clamped from the front and back by a pair of cooled cooling plates, thereby rapidly cooling and hardening the plate-shaped portion. cooling bonding process and crimping; after the cooling crimping process, a punching process for forming the hook portion 15 by punching through the die-cut the plate-like portion 13a; made constitute, by the punching step, Hook
Reference numeral 15 denotes a hook-shaped portion 15a and a welding portion connected to the hook-shaped portion 15a.
A connecting portion 15 extending substantially the entire width of the bag along the attachment fixing line 14
b and a bag body at both ends in the width direction of the connecting portion 15b from the hook side.
Sides are formed with gradually increasing inclined shoulders 15c, 15c.
The welding fixing line 14 is moved below the inclined shoulders 15c, 15c.
In that it is arranged on the side .

[0016]

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) In the first embodiment shown in FIG. 1, the bag 1 is made of a thick synthetic paper or the like having a core plate portion 3 extending downward from a header portion 2 formed on the upper portion. And a front and back film 5 and 6 made of a thin synthetic resin film provided with the sheet-shaped core material 4 interposed therebetween. The front and back films 5 and 6 are formed by folding one thin synthetic resin film at the upper part of the header portion 2 and bending it almost in a half-fold manner. The sealing piece 8 is formed by extending the front film 5 beyond the lower edge of the sheet-shaped core material 4 while fixing the adhesive 7 by welding or the like. It has. The bag body 1 is integrated by performing side seals 11 on the front and back films 5 and 6 including the core material 4 along both side lines, and a product storage portion formed between the core plate portion 3 and the front film 5. The lower opening of 12 can be opened and closed by the sealing piece 8.

The superposed portions 5x and 6x of the front and back films 5 and 6 superposed on the header portion 2 of the core material 4 are welded and integrated over the entire front and back surfaces of the header portion 2, thereby forming the plate portion 13. That is, the overlapping portions 5x and 6x are clamped by the pair of hot plates via the header portion 2 to significantly reduce the thickness of the overlapping portions 5x and 6x and to reduce the thickness of the header portion 2x.
Is integrated by welding. At this time, although not shown, the front and back films 5 and 6 are printed with advertisements, trademarks or trade names, product descriptions, and the like on their outer surfaces. 6 are continuously shown from the main part corresponding to the product storage part 12 to the overlapping parts 5x and 6x. Therefore, there is no obstruction such as printing on the inner surfaces of the overlapping portions 5x and 6x, and the inner surfaces are fused and integrally welded to the surface of the header portion 2.

In the vicinity of the plate-shaped portion 13, welding fixing wires 14A and 14B are provided, in which the front and back films 5 and 6 are welded over the entire width of the core material 4. For example, the toothed heat roll is pressed against the front and back films 5 and 6 to be welded to the core material 4 in a biting manner.

The plate portion 13 is punched by a punching die to form a hook portion 15. The hook portion 15 has a hook-shaped portion 15a forming a hanging opening 17 opened to the side through a slit 16, and a substantially full width of the bag 1 along the welding fixing line 14A connected to the hook-shaped portion 15a. Connecting part 1 extending to
Inclined shoulder portions 15c, 15c gradually increasing from the hook side to the bag body side at both ends in the width direction of the continuous portion 15b.
Is formed.

According to the bag with a hook having the above-described configuration, the article storage section 12 is sealed with the sealing piece 8 while the article is stored in the article storage section 12, and the hook section 15 is hung by the hanging rod in the shop. It will be sold for display. On this occasion,
The hook part 15 includes the header part 2 and the film overlapping part 5x,
Since 6x is formed by the plate-like portion 13 in which the entirety is welded and integrated, it is extremely strong. That is, the header part 2
Is itself a flexible thick synthetic resin sheet such as synthetic paper. However, if the film superposed portions 5x and 6x are entirely welded and integrated on both surfaces thereof by clamping a hot plate, Thus, a rigid plate-shaped portion 13 having flexibility but having rigidity such as a synthetic resin plate is formed. Therefore, a strong hook portion 15 that can bear the weight of the product is provided.

Various indications such as advertisements, trademarks or trade names, and product descriptions are continuously printed from the main portion corresponding to the product storage portion 12 of the front and back films 5 and 6 to the overlapping portions 5x and 6x. Are displayed, and the printed display is continuously displayed on the surface of the hook portion 15.

In the suspended state, the own weight of the product acts as a tensile load on the front and back films 5 and 6, but the welding fixing lines 14A and 14B cause the inclined shoulder portions 15c and 1
5c, the front and back films 5, 6
And the core material 4 can be suitably prevented from peeling off. That is,
Assuming that the welding fixing lines 14A and 14B are inclined slopes 15c and 1c, respectively.
5c, the tensile stress of the front and back films 5 and 6 is concentrated on both ends of the welding fixed lines 14A and 14B and may be separated from both ends. For example, since the front and back films 5 and 6 are welded and fixed to the core material 4 below the inclined shoulder portions 15c and 15c, it is possible to disperse the tensile stress over the entire welding fixing wires 14A and 14B, and Can be prevented as much as possible.

FIGS. 2 and 3 show a method for producing the hooked bag described with reference to FIG. First,
As shown in FIG. 2A, the header 2a and the core plate 3a
And a long strip-shaped thick sheet-shaped core material 4a and long strip-shaped thin front and back films 5a and 6a superposed from the front and back with the core material 4a interposed therebetween are intermittently transported in the belt longitudinal direction. (Transfer step), and is located near the header portion 2a and faces the front and back films 5a, 6a in the longitudinal direction of the band.
a is linearly welded 14a to the core material 4a (film fixing step).

At this time, the front and back films 5a and 6a are formed by bending a single thin synthetic resin film at the upper edge of the header 2a so as to be substantially half-folded.
The sealing piece 8a is formed by extending the front film 5a beyond the lower edge of the core material 4a, and the sealing piece 8a is provided with an adhesive 10a covered with a release tape 9a.

Thereafter, as shown in FIG.
front and back films 5a, 6 polymerized on the header 2a of
The plate-like portion 13a is formed by welding and integrating the overlapping portions 5y and 6y of “a” onto the entire front and back surfaces of the header portion 2a via a pair of hot plates (not shown) (welding integration process). This welding integration may be performed in a region corresponding to the width W of the bag body 1 for the purpose of bag making, or may be performed over a wide region Wn in the width direction as an integral multiple thereof. In any case, since the front and back films 5a, 6a and the header 2a are fixed by the welding 14a formed in advance in the film fixing step, when the pair of hot plates is clamped by the welding integration step, the film overlapping section 5
No wrinkles are caused by displacement of y and 6y on the surface of the header portion 2a, and the overlapping portions 5y and 6y and the header portion 2a are preferably welded and integrated over the entire surface.

Next, as shown in FIG.
The hook portion 15 is formed by punching 3a by a punching die (not shown) (a punching step), and the front and back films 5a and 6a including the core material 4a are spaced apart from each other by a predetermined distance in the belt longitudinal direction and have a band width. By applying the side seals 11 by fusing and welding in the directions (side sealing step),
A bag 1 as shown in FIG. 1 is completed. At this time, the punching step and the side sealing step can be performed in order, and the formation of the hook portion 15 by the punching step is as follows.
The outline of the hook portion 15 formed corresponding to the width W of the bag body 1 for bag making may be punched out by one reciprocation of the punching die, or adjacent bags formed sequentially. The contour of the hook portion 15 may be punched out in a region Wh that extends halfway over the width WW of the bodies 1 and 1 respectively. Note that the punching die may be a cutting blade that forms the contour of the hook portion 15,
It is preferable to use a fusing blade.

Although not shown, in a preferred embodiment, a cooling / compression bonding step is performed after the welding integration step. That is, the overlapping portions 5y and 6y are formed by a pair of hot plates.
Is welded and integrated over the entire front and back surfaces of the header portion 2a to form the plate-like portion 13a. Then, the plate-like portion 13a is almost immediately clamped from the front and back by a pair of cooling plates cooled by water cooling or the like. The plate-like portion 13a in the molten state is rapidly cooled and hardened, and at the same time, the overlapping portions 5y, 6y and the header portion 2a are pressed together during the hardening to strengthen the mutual connection.

FIG. 3 shows the core material 4a (4) and the front and back films 5a in the side seal portion 11 for convenience of illustration.
(5), 6a (6) are exposed in a laminated state,
Actually, the side seal portion 11 and the plate-like portion 13a (1
It should be appreciated that in any of 3), the laminated state is welded and integrated to such an extent that it is difficult for the naked eye to see the laminated state.

Incidentally, the second to fifth embodiments of the bag with a hook will be described below. Regarding the manufacturing method, the above-mentioned transfer step, film fixing step, welding integration step, cooling / compression step, punching step, The side sealing step is performed similarly.

(Second Embodiment) FIG. 4 shows a second embodiment of the present invention.
A thick synthetic resin sheet such as a single sheet of synthetic paper provided with a holding portion 18 slightly extending downwardly from the other, while another sheet-like core plate that is superimposed on the holding portion 18 and extends long downward The back film 6 is superimposed on the core plate 19 among the front and back films 5 and 6 made of one thin synthetic resin film, and is fixed by welding at the upper edge 20. While the front film 5 folded upward at the lower end and extending upward is superposed on the sheet-shaped core material 4,
The front film 5 is further provided with a sealing piece 21 which is folded back at the upper end of the core material 4 and extends downward.

Therefore, a welding fixing line 14A is provided by welding the front film 5 to the holding portion 18, and a welding fixing line 14B is provided by welding the sealing piece 21 in the vicinity of the header portion 2. The plate-like portion 13 is formed by welding and integrating the film overlap portions 5x and 6x on the front and back of the header portion 2 located above the welding fixing line 14B with the entire surface of the header portion 2 by using a hot plate. The hook portion 15 is formed by punching 13 with a punching die.

The bag 1 includes the core member 4 and the front and back films 5 and 6 are integrated by side seals 11 and 11 along both side lines, and the bag 1 is formed between the core plate 19 and the front film 5. Open the upper opening of the bottom product storage unit 12 with the sealing piece 2
Back film 6 near the opening edge
Is provided with an adhesive 10 covered with a release tape 9.

The configuration of the hook portion 15 is the same as that of the first embodiment, and is denoted by the same reference numerals as above.

(Third Embodiment) FIG. 5 shows a third embodiment of the present invention.
And a thick synthetic resin sheet such as a single sheet of synthetic paper provided with a holding portion 18 extending slightly downward from the sheet. The front and back films 5 and 6 in which one thin synthetic resin film is folded down and polymerized, the front film 5 is polymerized on the sheet core 4 and the front film 5 is folded at the upper end of the core 4. The core material 4 is overlapped so as to sandwich it, thereby providing film overlapping portions 5x and 6x, and extending the back film 6 upward so as to overlap the holding portion 18 to thereby form the opening edge 2
2 are formed.

Therefore, the welding fixing line 14A is provided by welding the front film 5 to the holding portion 18, and the welding fixing line 14B is formed by welding the rear film overlapping portion 6x in the vicinity of the header portion 2. The plate-like portion 13 is formed by welding and integrating the film overlapping portions 5x and 6x on the front and back of the header portion 2 located above the welding fixing line 14B on the entire surface of the header portion 2 by using a hot plate. The hook portion 15 is formed by punching the plate-shaped portion 13 with a punching die.

The bag 1 includes the core material 4 and is integrated by forming the front and back films 5 and 6 along both side lines to form side seals 11 and 11, and has a bottomed bottom formed between the front and back films 5 and 6. The upper opening of the product storage section 12 can be closed by heat sealing the opening edge 22 of the back film 6 to the holding section 18.

The configuration of the hook portion 15 is the same as that of the first embodiment, and is denoted by the same reference numerals as above.

(Fourth Embodiment) FIG. 6 shows a fourth embodiment of the present invention.
And a thick synthetic resin sheet such as a single sheet of synthetic paper provided with a lower edge portion 23 extending only slightly downward from the bottom.

FIG. 6B shows a first example based on the fourth embodiment. The front and back films 5 and 6 obtained by folding a single thin synthetic resin film upward and polymerizing the core material 4 are shown in FIG.
Is extended downward with the front film 5 as the back film 6
Forming the sealing piece 8 by extending it longer than
An adhesive 10 covering the sealing piece 8 with a release tape 9
It has. Then, immediately below the film superposed portions 5x and 6x of the front and back films 5 and 6 that are superposed so as to sandwich the core material 4, the films 5 and 6 are placed near the lower edge 23 of the core material 4 and the bag 1 Welding fixing lines 14A and 14B are provided by welding over the entire width.

FIG. 6C shows a second example based on the fourth embodiment. The front and back films 5 and 6 obtained by folding and polymerizing one thin synthetic resin film downward are the front film 5. To the core material 4 and the front film 5
Is folded back at the upper end of the core material 4 to extend downward.
Are provided, thereby forming the film superposed portions 5x and 6x which are superposed so as to sandwich the core material 4. On the other hand, the back film 6 is folded upward from the lower end of the front film 5 and extended upward to form a product storage portion 12 between the front and back films,
In the vicinity of the upper opening edge of the product storage section 12, the back film 6
Is provided with an adhesive 10 covered with a release tape 9. The front film 5 and the sealing piece 21 are welded over the entire width of the bag 1 in the vicinity of the lower edge 23 of the core member 4 immediately below the film overlapping portions 5x and 6x which are superposed so as to sandwich the core member 4. Thus, welding fixing lines 14A and 14B are provided.

Therefore, the first example shown in FIG.
In each of the second examples shown in FIG. 6C, as shown in FIG.
x and 6x are welded and integrated on the entire surface of the header portion 2 with a hot plate to form the plate-like portion 13 and the plate-like portion 1 is formed.
The hook part 15 and the hanger bone parts 24, 24 are formed by punching 3 with a punching die. That is, since the bag body 1 formed by the side seals 11 and 11 is formed relatively wide, the hanger bone portions 24 and 24 are traversed to the vicinity of the entire width of the bag body 1 via the inclined shoulder portions 15c and 15c. The hook portion 15 is formed so as to protrude upward through the hanger bone portions 24, 24.

(Fifth Embodiment) FIG. 7 shows a fifth embodiment of the present invention.
(B) is similar to the first example of the fourth embodiment described above, except that the front and back films 5 and 6 have the welding fixed wires 14A and 1
A gusset part 2 bent substantially in a V shape in the vicinity of 4B
5 and 25 are formed, and the inclined shoulders 15c, 15c of the hanger bones 24, 24 are extended to the gussets 25, 25 and blown out, so that the gussets 25, 2 are fused.
5 are formed at both ends with inclined edges 25a, 25a fused and welded. Other configurations are almost the same as those of the first example of the fourth embodiment, and are denoted by the same reference numerals.

[0045]

According to the present invention, it is possible to provide a bag with a hook which can be displayed and sold by hanging the hook portion 15 on a hanging rod in a store. At this time, hook 1
5 is extremely strong because it is formed by the plate-like portion 13 in which the header portion 2 and the film overlap portions 5x and 6x are entirely welded and integrated. That is, although the sheet-shaped core material 4 itself constituting the header portion 2 is a flexible thick synthetic resin sheet such as synthetic paper, the film superposed portions 5x,
When 6x is entirely welded and integrated by a hot plate clamp, it loses its flexibility and forms a rigid but rigid plate-like portion 13 such as a synthetic resin plate. Therefore, a strong hook portion 15 that can withstand the weight of the product can be provided.

Various displays such as advertisements for products, trademarks or trade names, and product descriptions are sent from the main portion corresponding to the product storage portion 12 of the front and back films 5 and 6 to the overlapping portions 5x and 6x. It is possible to print continuously, and the print display can be continuously displayed on the surface of the hook portion 15.
The intended purpose can be suitably achieved. Furthermore, according to the bag with hooks of the present invention, in the suspended state, the weight of the product acts as a tensile load on the front and back films 5 and 6, but the welding fixed line 14 (the welding fixed line 14A and the welding fixed line 14A in the first embodiment). 14B, the welding fixing line 14B in the second embodiment, the welding fixing line 14B in the third embodiment, and the welding fixing lines 14A and 14 in the fourth and fifth embodiments.
Since B) is provided below the inclined shoulders 15c, 15c, peeling of the front and back films 5, 6 from the core material 4 can be suitably prevented. That is, if the welding fixing line 14 is provided immediately above the inclined shoulder portions 15c, 15c, the tensile stress of the front and back films 5, 6 is concentrated on both ends of the welding fixing line 14,
According to the above-described embodiment, the front and back films 5 and 6 are welded and fixed to the core material 4 below the inclined shoulders 15c and 15c. Can be dispersed over the entirety of the welding fixing wire 14, and peeling of the welded portion can be prevented as much as possible.

[Brief description of the drawings]

1A and 1B show a first embodiment of a bag with hooks according to the present invention, wherein FIG. 1A is a front view, and FIG.

FIG. 2 shows a transfer step, a film fixing step, and a welding integration step in the method for manufacturing a bag with hooks according to the first embodiment of the present invention, and (A) shows the transfer step and the film fixing step. FIG. 2B is a perspective view showing a welding integration step.

FIG. 3 is a perspective view showing a punching step and a side sealing step in the method for manufacturing a bag with hooks according to the first embodiment of the present invention.

FIG. 4 shows a second embodiment of a bag with hooks according to the present invention, wherein (A) is a front view and (B) is a longitudinal sectional view.

FIG. 5 shows a third embodiment of a bag with hooks according to the present invention, wherein (A) is a front view and (B) is a longitudinal sectional view.

6A and 6B show a fourth embodiment of a bag with hooks according to the present invention, wherein FIG. 6A is a front view, FIG. 6B is a longitudinal sectional view showing a first example of the fourth embodiment, and FIG. It is a longitudinal section showing the 1st example of 4 embodiments.

FIG. 7 shows a fifth embodiment of a bag with hooks according to the present invention, wherein (A) is a front view and (B) is a longitudinal sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag body 2, 2a Header part 4, 4a Sheet-shaped core material 5, 5a Front film 6, 6a Back film 5x, 6x, 5y, 6y Film superposition part 11 Side seal 12 Merchandise storage part 13, 13a Plate part 14A, 14B Welding fixing wire 15 Hook

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-62-252054 (JP, A) JP-A-3-205142 (JP, A) JP-A-4-142920 (JP, A) JP-A-7- 148869 (JP, A) JP-A-7-156308 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65B 61/14 B31B 1/90 321 B65D 33/14

Claims (2)

(57) [Claims] 1. A bag body is constituted by a thick sheet-like core material constituting at least a header portion and thin front and back films disposed with the core material interposed therebetween, and the front and back films including the core material are formed. In a bag formed by welding along both side edges of the bag body: a plate portion 13 in which the superposed portions of the front and back films 5 and 6 superposed on the header portion 2 of the core material 4 are welded and integrated over the entire surface of the header portion. And located near the plate-shaped portion 13.
And the front and back films 5 and 6 are applied to the core material 4 over the entire width of the bag body.
It comprises a welded fixing wire 14 and a hook 15 formed by stamping and forming the plate-shaped portion 13. The hook 15 is formed with a hook- shaped portion 15a and the hook-shaped portion 15a.
And extends almost the full width of the bag along the welding fixing line 14.
Connecting portion 15b, and both ends in the width direction of the connecting portion 15b.
The inclined shoulder 15 gradually becomes wider from the hook side to the bag side.
c, 15c, and the welding fixing line 14 is
A bag with hooks provided below 5c and 15c . 2. A long strip-shaped thick sheet-shaped core material 4a constituting at least a header portion 2a, and a long strip-shaped thin front and back film 5a which is superposed from both sides with the core material interposed therebetween.
And a side sealing step of fusing and welding the front and back films including the core material at predetermined intervals in the band longitudinal direction and fusing and welding in the band width direction. Before the side sealing step is performed, the header portion 2a
And the front and back films 5a and 6a are attached to the core material 4a.
A film fixing step of linearly welding 14a in the longitudinal direction of the band , and after the film fixing step, the front and back films 5a polymerized on the header 2a of the core 4a;
The overlapping portion 6a is welded and integrated over the entire front and back surfaces of the header portion 2a via a pair of hot plates to form a plate-like portion 13a.
And a step of forming a plate-like portion 1 by a pair of cooled cooling plates immediately after the step of forming a weld.
A cooling and pressing step of rapidly cooling and hardening the plate-shaped portion by clamping the 3a from the front and back, and pressing the plate-shaped portion 13a through a punching die after the cooling and pressing step; A punching step of forming a;
It made constitute, by the stamping process, the hook portion 15, Kagigata portion 15a
Along the welding fixing line 14 which is connected to the hook-shaped portion 15a.
A continuous portion 15b extending over substantially the entire width of the bag;
Gradually widens from the hook side to the bag side at both ends in the width direction
The inclined shoulder portions 15c, 15c are formed, and the welding fixing line 1 is formed.
4 below the inclined shoulders 15c, 15c
A method for producing a bag with hooks, comprising :