JPH0732514A - Suspension packing bag and production thereof - Google Patents

Abstract

PURPOSE:To obtain a suspension packing bag using a stiff material as a suspending core material. CONSTITUTION:A stiff core material 14a is inserted in the upper end part of a flat bag main body 10a and an opening 11a is provided to the lower end part of the bag main body 10a and a self-adhesive layer 12a covered with release paper 13a is provided to the flap 15a extending from the opening and the width of the core material 14a is made less than that of the bag main body 10a. By reducing the width of the core material 14a, when both side edges of the bag main body 10a are fused by a heating blade during a production process, the core material 14a does not get in the way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag for accommodating a ballpoint pen, a brush, etc., which is hung on a hook or a bar for display and sale, and a method for manufacturing the same.

[0002]

2. Description of the Related Art As shown in FIGS. 10 and 11, a packaging bag of this type is formed into a flat bag 1 by folding a synthetic resin film such as polypropylene into two and fusing the side edges 2 and 2 together. The core material 3 is inserted in the upper end portion, and the opening 4 is provided below. Flap 5 extending from this opening 4
Further, an adhesive layer 6 covered with a release paper 7 is provided.

After storing an article such as a ballpoint pen in the flat bag 1 through the opening 4, the flap 5 is folded back in the direction of the arrow, the release paper 7 is peeled off, and the flap is fixed with the adhesive layer 6 to open the opening 4. It is supposed to close.

Then, the hole 8 provided at the upper end portion is inserted into a bar or the like and suspended.

[0005]

However, since the packaging bag as described above is manufactured by so-called fusing in which both side edges are cut by a heating blade and welded at the same time, the core material 3 at the upper end has both side edges of the flat bag 1. Only materials that can be welded to 2, 2 can be used.

Moreover, since the material of the flat bag 1 is a thin synthetic resin film, its fusing conditions are almost fixed.
That is, as the core material 3, only a relatively thin synthetic resin sheet that can be fused with the flat bag 1 is used.

Therefore, for example, even if a slit 9 as shown in FIG. 10 is provided so that an arbitrary product can be taken out from a large number of items suspended on a bar, the core material 3 has a weak waist, and the slit is heavy. The portion 9 may be deformed and the packaging bag may come off the bar and fall.

[0008] Therefore, an object of the present invention is to provide a packaging bag using a strong material as a core material and a manufacturing method thereof.

[0009]

In order to solve the above-mentioned problems, the packaging bag of the present invention is such that a core material is inserted into the upper end of a flat bag-shaped bag body,
An opening is provided at the lower end, and on the flap extending from this opening,
An adhesive layer coated on release paper is provided, and strong core paper or semi-rigid synthetic resin sheet is used as the core material, and the width of the core material is made smaller than the width between the both side edges of the bag main body. Both sides of the material were fixed to the inner surface of the upper end of the bag body.

Further, in the manufacturing method, an adhesive layer is provided closer to one side edge than the longitudinal centerline of the thermoplastic long film, and the other side edge of this long film is covered with a release paper. Adhesive layer is provided, the other side edge of the stiff core strip is overlapped along the other side edge of the adhesive layer, and the long film is doubled along one side edge of the strip. Fold it, thermocompress from the outer surface of the long film to join the strip and the long film, the joint portion,
It consists of punching so that it is narrower than the width between the planned fusing lines corresponding to both side edges of the bag body of the long film folded in two, and then fusing along the planned fusing line.

[0011]

Since the core material having a strong rigidity is used, the core material will not be deformed by the weight of the contents even if the bar or the hook is provided with slits for hanging.

Further, in the manufacturing method, since the core material is previously cut into a width smaller than the planned fusing line of the flat bag, it does not interfere with fusing.

[0013]

First, the manufacturing method of the present invention will be described.

As shown in FIGS. 1 and 2, an adhesive layer 11 is provided, for example, by printing, at a position closer to one side edge than the center line C of a long thermoplastic synthetic resin film 10 having a constant width.
Further, an adhesive layer 12 is provided on the other side edge portion, and the outer surface thereof is covered with a release paper 13.

Next, a core strip made of cardboard or a semi-rigid synthetic resin sheet is prepared. As shown in FIGS. 3 and 4, the other side edge of the strip 14 is the other side edge of the adhesive layer 11. Stack them along each other so that they almost match.

5 and 6, the long film 10 is folded in two along one side edge of the core strip 14, and both sides of the core strip 14 are wrapped with an adhesive layer 11 to cover this portion. The film 10 is fixed to the core strip 14 by thermocompression bonding.

Further, as shown in FIG. 7, the portion corresponding to the thermocompression-bonded core strip 14 is punched together with the long film by a press. The shape of the cutting line 15 at this time may be selected so as to be conveniently displayed by hanging it on a bar or a hook, but the width W is larger than the width between the planned fusing lines 16 when the bag body is formed. Must be kept small. This is to enable subsequent fusing.

After the punching, the packaging bag is completed by cutting the film along the expected fusing line 16 with a heating blade and fusing the film at the same time.

The completed packaging bag is shown in FIGS. 8 and 9.
In the figure, reference numeral 10a is a flat bag main body, 11a is an opening, and 14
a is a core material, 15a is a flap, 12a is an adhesive layer, 13
a is a release paper.

When the packaging bag is used, the article is inserted through the opening 11a, the flap 15a is folded back to release the release paper 13, and the flap 15a is fixed to one surface of the bag body 10a by the adhesive layer 12a.

Although the adhesive layer 11 is provided on the long film 10 by the manufacturing method shown in FIGS. 1 to 7, it may be provided on both surfaces of the core strip 14 instead.

Further, the step of providing the pressure-sensitive adhesive layer 12 and the release paper 13 may be performed after the long film shown in FIGS. 5 and 6 is folded back and the core material 14 is thermocompression-bonded, or after the press punching shown in FIG. Good.

[0023]

As described above, according to the present invention, since a strong material is used for the core material to be inserted into the hanging portion of the packaging bag, the core material is deformed by the weight when it is hung on a bar or a hook. There is nothing to do.

Further, in the manufacturing method, since the core portion is preliminarily cut so that the width is narrower than the both side edges of the bag body, it does not become an obstacle when fusing the both side edges of the bag body. Even if a strong material is used as the core material, the packaging bag can be manufactured by almost the same process as the conventional one.

[Brief description of drawings]

FIG. 1 is a plan view showing a first step of a method for manufacturing a packaging bag according to the present invention.

FIG. 2 is a sectional view of the above.

FIG. 3 is a plan view showing a second step of the manufacturing method.

FIG. 4 is a sectional view of the above.

FIG. 5 is a plan view showing a third step of the manufacturing method.

FIG. 6 is a sectional view of the above.

FIG. 7 is a plan view showing a fourth step of the manufacturing method.

[Figure 8] Back view of the completed packaging bag

FIG. 9 is a vertical sectional view of the same.

FIG. 10 is a back view showing a conventional packaging bag.

FIG. 11 is a vertical sectional view of the above.

[Explanation of symbols]

 1 Flat Bag 2 Side Edge 3 Core Material 4 Opening 5 Flap 6 Adhesive Layer 7 Release Paper 8 Hole 9 Slit 10 Thermoplastic Synthetic Resin Film 10a Bag Body 11 Adhesive Layer 11a Opening 12, 12a Adhesive Layer 13, 13a Separated Shaped paper 14 Core strip 14a Core 15 Cutting line 15a Flap 16 Expected fusing line

Claims (2)

[Claims] 1. A pressure-sensitive adhesive layer in which a core material is inserted into an upper end portion of a flat bag-shaped bag body made of a thermoplastic synthetic resin film, an opening is provided at a lower end portion, and a flap extending from the opening is covered with a release paper. Using a strong cardboard or semi-rigid synthetic resin sheet as the core material, the width of the core material is made smaller than the width between the both side edges of the bag body, and both sides of the core material are the inner surface of the upper end portion of the bag body. A hanging packaging bag that is firmly attached to. 2. An adhesive layer is provided closer to one side edge than the longitudinal centerline of the long thermoplastic synthetic resin film, and the other side edge of this long film is covered with a release paper. An adhesive layer is provided, the other side edge of the stiff core strip is overlapped along the other side edge of the adhesive layer, and the long film is folded in two along one side edge of the strip. , A part corresponding to the core material strip is thermocompressed from the outer surface of the lengthy film to bond the core material strip and the lengthy film, and the bonded part of the bag body of the lengthy film folded in two. A method for manufacturing a hanging packaging bag, comprising punching so as to be narrower than a width between planned fusing lines corresponding to both side edges, and then fusing along the planned fusing line.