JP3060171B2 - Commodity packaging bag with header and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product packaging bag with a header and a method for producing the same.

[0002]

2. Description of the Related Art Various types of merchandise packaging bags which can be sold in stores with various small merchandise stored therein have been proposed by the present applicant. Such a product packaging bag forms a substantially rectangular bag body having a bag portion by fusing and welding a front film and a back film made of a synthetic resin film, and folds the film extended above the bag portion. Forms the header part. Therefore, when selling products in stores with the bags stored therein, the hanging means such as the hanging holes and hooks formed in the header portion can be locked to the hanging rods and displayed in a suspended state. There is an advantage.

[0003]

[0005] Such a product packaging bag is used for storing and packaging the product immediately after the bag is made.
After a large number of bags are transported and delivered to a customer, the customer may store and pack the goods in each bag and sell it over the counter. In the latter case, a large number of bags made by a bag maker are stored in a stacked state in a paper box or the like, packed and transported to a customer.

[0004] Therefore, in the above-described merchandise packaging bag with a header, the header portion extends above the bag portion.
The entire length of the bag body is configured to be long corresponding to the header portion. Therefore, a large paper box or the like for accommodating and packing a large number of bag bodies in a stacked state is required.

[0005] Incidentally, the header portion is required when the merchandise is packaged in a bag and then sold over the counter, but is not required when the bag is packed. Therefore, it is advantageous to fold the header portion toward the bag portion of the bag body for compact packing and reduction in transportation cost and the like.

However, it is not preferable to manually fold the header portion for each piece of the bag after the bag-making, since this would rather increase the cost. In addition, even if the bag is folded so that the header is folded back toward the bag after the bag is formed, the header is easily restored due to rebound of the film or the like, so this is stored in a paper box or the like and packed. The work becomes difficult.

[0007]

SUMMARY OF THE INVENTION The present invention provides a merchandise packaging bag with a header and a method of manufacturing the same, which solves the above-mentioned problems.

Therefore, the product packaging bag with a header according to the present invention is constituted as a first means. A bag body provided with a header portion formed by extending at least one film above a bag portion made of front and back films. In the above, the header portion is folded back and overlapped with the bag portion, and the overlap portion of the header portion and the bag portion is fixed so as to be separable.

The product packaging bag with a header according to the present invention is constituted as a second means by extending at least one film above the bag portion made of the front and back films and folding the film. In a bag provided with a header portion, in a state where the header portion is overlapped with the folded bag portion substantially along a welding line formed between the header portion and the bag portion and formed in the width direction of the bag body, The point lies in that the header portion and the bag portion are welded separably along both side edges of the bag body.

Further, the method for producing a product packaging bag with a header according to the present invention is constituted as a means. A long body of a front and back film material which has been polymerized mutually so as to form a bag constituting portion is continuously transferred. In the process, a header component formed by folding at least one film is formed on one side edge of the bag component, and is located between the header component and the bag component in the transport direction of the elongated body. A step of forming a continuous body with a header for forming a continuous welding line, and a folded length by superimposing the header component on a folded bag component substantially along the welding line while transferring the long body. A step of forming a folded long body, forming a long body, and cutting the folded long body along a fusing line intersecting in the transport direction to form a bag body having both side edges welded, and the bag body From the foldable long body A step of cutting the bag body to be cut off.In the bag body cutting step, a welding weakening means is provided in which the header component portion and the bag component portion, which are folded and folded, are located on the welding line on the mutually facing surfaces. The point is that they are welded so as to be separable from each other via the weakening means.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

(First Embodiment) FIGS. 1 and 2 show a merchandise packaging bag with a header according to a first embodiment, and FIG. 3 shows a manufacturing method thereof.

As shown in FIG. 3 (A), a strip-shaped long body M composed of the front and back film materials 1 and 2 superposed on each other is continuous, and is transported in the longitudinal direction of the strip. In the case of the illustrated example, the front and back film materials 1 and 2 are formed of one synthetic resin film which is folded almost half-fold through the folded portion 3. You may comprise with a film. Therefore, the elongated body M forms the bag forming part 4 by the superposed front and back film materials 1 and 2 and forms the header forming part 5 including the folded part 3 on one side edge of the bag forming part 4. I do.

In the illustrated embodiment, of the front and back film materials 1 and 2 constituting the bag forming section 4, the free edge of the back film material 2 is extended longer than the free edge of the front film material 1 and the sealing piece structure is formed. An adhesive layer 8 made of an adhesive tape is provided along the longitudinal direction of the sealing piece constituting section 7, and the adhesive layer 8 is covered with a release tape 9.

It is preferable that a thick core sheet 10 made of a tape-shaped synthetic paper or a synthetic resin sheet is provided inside the header constituting section 5.
Need not be provided.

A welding wire 11 is formed between the header component 5 and the bag component 4 and is continuous in the transport direction of the elongated body M, thereby enclosing the core sheet 10 in the header component 5. I do. In the case of the example shown in FIG.
By providing the header component 5 in the vicinity of the side edge of the core sheet 10, the header forming part 5 is formed in a bag tube shape in which the core material sheet 10 is inserted. Accordingly, the front and back film materials 1 and 2 constituting the header constituting portion 5 and the core material sheet 10 may be welded and integrated in a sandwich shape.

The above is the same as a known process (formation process of a long body with a header) which is conventionally performed when making a product packaging bag with a header, and the long body M is continuously transferred. It is carried out while. At this time, by continuously transferring the elongated body M after the continuous transfer, a suspension means 6 including a suspension hole, a hook groove, and the like is formed in the header constituting section 5.

By the way, according to the conventional manufacturing method, the long body M is blown along a fusing line intersecting the transport direction to form a merchandise packaging bag with a header welded on both side edges. In the present invention, a folded elongated body MF is formed by superimposing the header component 5 on the folded bag component 4 substantially along the welding line 11 while transferring the elongated body M ( Folded long body forming step), and thereafter, the folded long body MF is blown along a fusing line W intersecting in the transport direction to form a bag body 12 to which both side edges S, S are welded. Then, the bag body 12 is separated from the folded long body MF by the melting (bag body cutting step).

The folding long body forming step is carried out by folding the header forming section 5 onto the bag forming section 4 substantially along the side edge of the welding wire 11 already formed. That is, in the case of the illustrated embodiment in which the welding wire 11 is formed along the vicinity of the core material sheet 10, the flexible film materials 1 and 2
Is hardened, the header component 5 can be easily bent using the side edges of the welding wire 11 as hinges or guides. In the case of the illustrated example, the header forming portion 5 is bent along the lower edge of the welding line 11, but may be bent along the upper edge of the welding line 11. Or welding wire 1
1 is formed on the side edge of the core sheet 10 and the core sheet 10
In the case of a configuration (not shown) in which the core material sheet 10 provided with the welding wire 11 functions as a hinge or a guide, the welding wire 11 is used. The header constituting portion 5 can be easily bent along the side edge of the core material sheet 10 substantially along the line. Then, it is preferable to form a folding curve 13 that is not restored naturally by crimping the folded edge after folding the header component 5 onto the bag component 4.

The header component 5 which is located at the predetermined fusing line W of the long folded body MF and is superposed in a folded shape
The welding weakening means 14 is provided in advance on the mutually facing surfaces of the and the bag constituting part 4. In the case of the example shown in FIG.
As shown in FIG. 3A, on the surface of the front film material 1, the surface is formed by applying printing ink or the like at regular intervals on the surface of the bag constituting section 4. In short, the welding weakening means 14 may be configured relatively to the mutually facing surfaces of the header component 5 and the bag component 4. Also, welding weakening means 1
4 is not limited to the printing ink, and the header component 5 and the bag component 4 are mutually weakly welded to each other along the side edges S, S of the bag at the time of the bag cutting process performed by fusing later. However, any material may be used as long as it can be easily welded. Therefore, for example, when constructing the front film material 1 using the synthetic resin film subjected to the corona discharge treatment, the treated surface is arranged on the outer surface, and thereby the header component 5 and the bag component which are folded back and polymerized. 4 may be configured such that the corona discharge treated surface faces both opposing surfaces,
In this case, since the corona discharge treated surface formed on the entire surface constitutes the welding weakening means 14 for preventing the film from being firmly welded, the header component 5 and the bag component which are cut off along the fusing line W in the next step. 4 are weakly attached so that both side edges S, S can be separated.

Subsequently, a bag cutting step is performed, and FIG.
As shown in (B), the folded long body MF is cut off along a cutting line W orthogonal to the transfer direction while being intermittently transferred, and the bag body 12 is completed. Then, the bag body 12 obtained by fusing is, as shown in FIG.
2a is fused and welded along both side edges S, S
And a header portion 5a connected to the bag portion 4a and folded over the bag portion 4a, and a sealing piece 7a provided with an adhesive layer 8a covered with a release tape 9a.

As shown in FIG. 1C, the header 5a
In both side edges, the front and back films 1a and 2a and the core sheet 10 are firmly welded and welded 15a in a sandwich shape, and the bag portion 4a is formed on both side edges by the front and back films 1a and 2a.
2a is firmly welded and welded 15b.
And the facing surface of the bag 4a (the folded back surface of the front film 1a) is weakly welded by the welding weakening means 14 described above.
A separable weak welding portion 16 is formed.

As a result, the bag 12 with the header after the bag making is completed.
Can be packed compactly with the header section 5a folded in a short overall length. Moreover, the header portion 5a is a weak welding portion 16 which can be separated into the bag portion 4a in a folded state.
, The header portion 5a is not unintentionally expanded during the packing operation.

Therefore, when the merchandise is stored and packaged in the bag body 12 and then sold at a store, as shown in FIG. 2, the merchandise is inserted into the bag portion 4a from the lower opening and the sealing piece 7 is opened.
a, is folded back through the adhesive layer 8a, and then the header portion 5a is developed in an inverted manner while being separated from the bag portion 4a, and the erect header portion 5a is hung on the hanging rod by the hanging means 6. Good. At this time, the header 5a
If the header portion 5a is pulled by inserting a fingertip or the like between the head portion and the bag portion 4a, the weakly welded portion 16 can be easily separated, and the header portion 5a can be easily developed through the folding curve 13. it can.

(Second Embodiment) FIGS. 4 to 6 show a second embodiment.
It shows a product packaging bag with a header according to the embodiment,
FIG. 7 shows the manufacturing method.

As shown in FIG. 7 (A), a strip-shaped long body M composed of the front and back film materials 1 and 2 superposed on each other is continuous and transported in the longitudinal direction of the strip. In the case of the example shown in the figure, the front and back film materials 1 and 2 are made of a single synthetic resin film that is folded back through the folded portion 3a corresponding to the bottom of the bag to be made. It may be composed of two welded films. The front and back film materials 1 and 2 polymerized so as to form the bag constituting portion 4 extend the back film material 2 longer than the free edge of the front film material 1 and further fold the extended portion to form a bag. Forming a header component 5 on one side edge of the component 4,
By further extending the back film material 2 from the header constituting portion 5, a sealing piece constituting portion 7x overlapping with the bag constituting portion 4 is formed. Therefore, in the present embodiment, the bag component 4 is formed including the sealing piece component 7x. That is, in the present invention, the terms “bag constituent part” formed by the front and back film materials and “bag part” formed in the bag after bag making have an opening at the lower part as in the first embodiment described above. In the bag provided, only the polymerized front and back film portions are meant, but in the bag provided with an opening at the top as in the second embodiment described here, the polymerized front and back film portions are further polymerized. It is meant to include the sealed piece constituting portion 7x. In the case of the illustrated embodiment, the sealing piece constituting portion 7x
An adhesive layer 8 made of an adhesive tape is provided along the longitudinal direction on the surface of the front film material 1 facing the
Is covered with a release tape 9, but such an adhesive layer 8 and a release tape 9 may be provided on the sealing piece constituting portion 7x.

It is preferable that a thick core sheet 10 made of a tape-shaped synthetic paper or a synthetic resin sheet is provided in the header constituting section 5.
Need not be provided.

A welding wire 11 is formed between the header forming section 5 and the bag forming section 4 and is continuous in the transport direction of the elongated body M, whereby the core material sheet 10 is sealed inside the header forming section 5. I do. In the case of the example shown in FIG.
By providing the header component 5 in the vicinity of the side edge of the core sheet 10, the header forming part 5 is formed in a bag tube shape in which the core material sheet 10 is inserted. Accordingly, the folded film portion constituting the header constituting portion 5 and the core material sheet 10 may be welded and integrated in a sandwich shape.

The above is the same as a known process (formation process of a long body with a header) conventionally performed when a product packaging bag with a header is made, and the long body M is continuously transferred. It is carried out while. At this time, by continuously transferring the elongated body M after the continuous transfer, a suspension means 6 including a suspension hole, a hook groove, and the like is formed in the header constituting section 5.

By the way, according to the conventional manufacturing method, the long body M is blown along a fusing line intersecting the transport direction to form a merchandise packaging bag with headers welded on both side edges. In the present invention, a folded elongated body MF is formed by superimposing the header component 5 on the folded bag component 4 substantially along the welding line 11 while transferring the elongated body M ( Folded long body forming step), and thereafter, the folded long body MF is blown along a fusing line W intersecting in the transport direction to form a bag body 12 to which both side edges S, S are welded. Then, the bag body 12 is separated from the folded long body MF by the melting (bag body cutting step).

The folded long body forming step is carried out by folding the header component 5 onto the bag component 4 substantially along the side edge of the welding wire 11 already formed. That is, in the case of the illustrated embodiment in which the welding wire 11 is formed along the vicinity of the core material sheet 10, the flexible film materials 1 and 2
Is hardened, the header component 5 can be easily bent using the side edges of the welding wire 11 as hinges or guides. In the case of the illustrated example, the header forming portion 5 is bent along the lower edge of the welding line 11, but may be bent along the upper edge of the welding line 11. Or welding wire 1
1 is formed on the side edge of the core sheet 10 and the core sheet 10
In the case of a configuration (not shown) in which the core material sheet 10 provided with the welding wire 11 functions as a hinge or a guide, the welding wire 11 is used. The header constituting portion 5 can be easily bent along the side edge of the core material sheet 10 substantially along the line. Then, it is preferable to form a folding curve 13 that is not restored naturally by crimping the folded edge after folding the header component 5 onto the bag component 4.

The header component 5 which is located at the predetermined fusing line W of the folded long body MF and is superposed in a folded shape
The welding weakening means 14 is provided in advance on the mutually opposing surfaces of the sealing piece constituting portion 7x constituting the bag constituting portion 4. In the case of the illustrated example, the welding weakening means 14 is formed by applying printing ink or the like at equal intervals on the surface of the sealing piece constituting portion 7x as shown in FIG. It may be provided on the surface of the part 5. In short, the welding weakening means 14 may be configured relatively to the mutually facing surfaces of the header constituent part 5 and the bag constituent part 4 (sealing piece constituent part 7x). Further, the welding weakening means 14 is not limited to printing ink,
At the time of the bag cutting step performed by the later cutting, the header forming portion 5 and the sealing piece forming portion 7x forming the bag forming portion 4 are weakly welded to each other at the portions along both side edges S, S of the bag. However, any material may be used as long as it can be easily welded. Therefore, for example, when forming the back film material 2 using a synthetic resin film subjected to corona discharge treatment, the treated surface is disposed on the outer surface, whereby the folded header component 5 and the sealing piece configuration are formed. Part 7
The corona discharge treated surface may be configured to face both opposing surfaces of x. In this case, the corona discharge treated surface formed on the entire surface prevents welding weakening of the films from each other.
Therefore, in the next step, both side edges S of the header component portion 5 and the sealing piece component portion 7x constituting the bag component portion 4 that are cut off along the fusing line W are weakly attached so as to be separable. You.

Incidentally, between the sealing piece constituting portion 7x and the surface film material 1, there is provided a release tape 9 made of a different synthetic resin.
, The welding weakening means is constituted by this. That is, the fusing line W is formed by the later bag dividing step.
Is performed, the sealing piece constituting portion 7x, the release tape 9 and the surface film material 1 are welded in a sandwich shape, but in an extremely weak welding state that can be easily separated.

Subsequently, a bag cutting step is performed, and FIG.
As shown in (B), the folded long body MF is cut off along a cutting line W orthogonal to the transfer direction while being intermittently transferred, and the bag body 12 is completed. Then, the bag body 12 obtained by fusing is, as shown in FIG.
2a is fused and welded along both side edges S, S
A header portion 5a connected to the bag portion 4a and folded back on the bag portion 4a; and a sealing piece 7a extending from the header portion 5a and constituting a part of the bag portion 4a.

As shown in FIG. 4C, the header 5a
In the both side edges, the extended folded portion of the back film 2a and the core material sheet 10 are firmly welded in a sandwich shape by welding 15
a, and the bag portion 4a has the front and back films 1 on both side edges.
a and 2a are firmly welded and welded 15b, but the opposing surfaces of the header portion 5a and the sealing piece 7a constituting the bag portion 4a are weakly welded by the above-mentioned welding weakening means 14 and are separable weakly welded portions. Constituting No. 16. As described above, the release tape 9a is provided between the sealing piece 7a and the facing surface of the front film 1a.
Are interposed, thereby constituting the weak attachment surface 16a.

As a result, the bag 12 with the header after the bag making is completed.
Can be packed compactly with the header section 5a folded in a short overall length. Moreover, the header portion 5a is weakly welded to the sealing piece 7a in a folded state via a separable welding portion 16, and the sealing piece 7a is weakly welded to the front film 1a via the release tape 9. 16a, the header portion 5a during the packing operation.
Does not inadvertently unfold.

Therefore, when the merchandise is stored in the bag body 12 and packaged, and then displayed and sold at the store, first, as shown in FIG. 5, the weak attachment surface 16a is separated by pulling the sealing piece 7a. The sealing piece 7a was separated from the peeling tape 9, and the header portion 5a was erected to open the upper portion of the bag body 12, and the product was inserted into the bag portion 4a from the opening, and then constituted by the welding weakening means 14. Weak welding part 1
By separating the sealing film 6, the sealing piece 7a is separated from the header 5a, and the sealing piece 7a may be bonded to the front film 1a via the adhesive layer 8a and sealed. Therefore, in the bag body 12 in which the product is packaged, the suspension means 6 of the header portion 5a which is erected on the upper portion of the bag portion 4a can be suspended by the suspension rod.

[0038]

According to the present invention, the product packaging bag with the header is in a folded state in which the header portion 5a is folded back to the bag portion 4a after the bag making, so that the total length of the bag body 12 is short, and the size of the compact bag is small. Can be packed. Moreover, the header part 5
Since a is weakly welded to the bag portion 4a via the separable weak welding portion 16 in the folded state, the header portion 5a does not accidentally unfold during the packing operation.

When the merchandise is stored in the bag body 12 and packaged, and then sold at a store, the weakly welded portion 16 is separated so that the header portion 5a is unfolded while being separated from the bag portion 4a. Since the header portion 5a can be hung on the hanging rod, there is an effect that it can be suitably displayed and sold similarly to a conventional product packaging bag with a header.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a product packaging bag with a header of the present invention, wherein (A) is a front view, (B) is a longitudinal sectional view,
(C) is an enlarged cross-sectional view of a main part.

FIG. 2 is a first embodiment of a product packaging bag with a header according to the present invention, showing a state where a header portion is developed and erected after packaging a product, (A) is a front view, and (B) is FIG. 4C is an enlarged cross-sectional view of a main part showing a state where a weakly welded portion is separated.

3A and 3B show steps of manufacturing a first embodiment of a product packaging bag with a header according to the present invention, wherein FIG. 3A is a perspective view showing a long body forming step, and FIG. It is a perspective view which shows a process and a bag cutting process.

FIG. 4 shows a second embodiment of a product packaging bag with a header according to the present invention, wherein (A) is a front view, (B) is a longitudinal sectional view,
(C) is an enlarged cross-sectional view of a main part.

FIG. 5 is a second embodiment of a product packaging bag with a header according to the present invention, showing a state where a header portion is erected together with a sealing piece in order to open a bag, (A) is a front view, (B) is a longitudinal sectional view, and (C) is an enlarged transverse sectional view of a main part showing a state where a sealing piece is separated.

FIG. 6 is a second embodiment of a product packaging bag with a header according to the present invention, showing a state in which the opening is sealed with a sealing piece after packaging the product, (A) is a front view, and (B) is a front view.
Is a longitudinal sectional view.

7A and 7B show steps of manufacturing a second embodiment of a product packaging bag with a header according to the present invention, wherein FIG. 7A is a perspective view showing a long body forming step, and FIG. It is a perspective view which shows a process and a bag cutting process.

[Description of Signs] 1 Front film material 1a Front film 2 Back film material 2a Back film 4 Bag component 4a Bag 5 Header component 5a Header 6 Hanging means 7a Sealing piece 8a Adhesive layer 9a Release tape 10 Core material Sheet 11 Welding wire 12 Bag body 14 Welding weakening means 16 Welding welding part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 30/00-33/38

Claims (3)

(57) [Claims] 1. A bag body provided with a header portion formed by extending at least one film above a bag portion made of front and back films, wherein the header portion is folded back and overlapped with the bag portion. A product packaging bag with a header, wherein a superposed portion of the portion and the bag portion are fixed so as to be separable. 2. A bag having at least one film extending above a bag made of front and back films and having a header formed by folding the film, wherein a bag is provided between the header and the bag. The header portion is folded back along the welding line formed in the width direction of the bag body, and the header portion and the bag portion are welded so that the header portion and the bag portion can be separated along both side edges of the bag body in a state of being overlapped with the bag portion. A product packaging bag with a header, comprising: 3. A process of continuously transporting a long body of a front and back film material which has been superimposed on each other so as to form a bag constituting portion, wherein at least one film is folded over at one side edge of the bag constituting portion. Forming a header component comprising: a header-elongated body forming step of forming a weld line continuous between the header component and the bag member in the direction of transport of the elongate body; A folding elongated body forming step of forming a folded elongated body by superimposing the header component on the folded bag component substantially along the welding line while transferring a body; and The bag is cut along a cutting line intersecting the transfer direction to form a bag with both side edges welded, and the bag is separated from the folded long body. Polymerized in a folded shape during the body separation process A header comprising a welded weakening means in which the header forming part and the bag forming part are located on the welding line on the mutually facing surfaces, and are welded so as to be mutually separable via the welding weakening means. Of manufacturing product packaging bags