JPH049347Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a gazette bag having opening perforations for accommodating disposable diapers.

[Conventional technology]

For packaging paper diapers, a gusset bag is known which is constructed by valley-folding both sides of a cylindrical plastic tube to form a gusset and heat-sealing the upper and lower ends. In this case, in the case of a gusset bag for storing disposable diapers, perforations are generally formed in advance on the front of the bag, and the consumer tears the bag along the perforations to remove the contents.

[The problem that the idea aims to solve]

However, conventional opening perforations generally have a shape or structure that makes them difficult to break, making it difficult for consumers to open the package. Therefore, it is desired that the shape and structure of the opening perforations be such that they can be easily broken and the contents can be easily taken out.

When packaging a large number of disposable diapers, it is desirable for consumers to use a carrier bag. However, when used as a carry-on bag, if perforations are formed on the front, tensile force will mainly act on the front and back surfaces.
Breakage is likely to occur. Furthermore, the front area is larger and wider than the town area. In this state, the perforation may break, and when the paper diaper is taken out, other paper diaper bundles may collapse, and in some cases, other paper diapers may also be taken out.

From this point of view, it is advantageous to avoid the method of taking out from the front and form perforations in the gusset where there is no risk of breakage. In addition, it is desirable to provide the perforations in the gusset so that they are difficult to see when opening the package. Furthermore, when forming perforations on the front side of the gusset bag, it is necessary to form the perforations after placing a backing material in the gusset bag in advance, in order to avoid forming perforations on the back side. This makes the packaging machine complex.

Therefore, an object of the present invention is to provide a gusset bag that is excellent in appearance and style, is less likely to break at the opening perforation, and is easy to form the opening perforation.

[Means to solve the problem]

The above problem was solved in the case of a gusset bag for accommodating a plurality of disposable diapers, which is constructed by valley-folding both sides of a cylindrical plastic tube to form a gusset and heat-sealing the upper and lower ends: From the surface side; at a position corresponding to the inner depths of the valley of the gusset, and from the upper position, pass through the gusset part diagonally outward and downward to near the ridge between the surface and the gusset, and reach the shoulder part of the gusset when the contents are wrapped. The problem was solved by punching a perforation into the back side of the first part and a second part extending downward from the end of the first part, and forming an almost arch-shaped opening perforation at the gusset. can.

[Effect]

In this invention, with the town folded in a valley,
By perforating the first and second parts from one surface, continuous arch-shaped opening perforations can be formed. Therefore, a very simple perforation forming device is sufficient.

Furthermore, since the opening perforations are formed in the gusset part, breakage during carrying or transportation is virtually eliminated. Moreover, when taking out the diaper, other disposable diapers are not removed as well.

〔Example〕

The present invention will be explained below using specific examples shown in the drawings.

First, with reference to FIG. 1, a basically known method of manufacturing a gusset bag will be explained. A plastic tube is used as the material, and is supplied with both sides 1A and 1B valley-folded, and after the contents 2, such as paper diapers, are stored inside, or before, or at the same time, the upper and lower sides are heat-sealed, and It is cut to a predetermined length.

In the illustrated example, two heat-sealed parts 3A and 3B are formed in the upper part, and a handle hole 4 is formed between them.
A heat seal portion 5 is formed at the lower part, and a portion 6 is the bottom surface.

In the present invention, the position and form of the sewing machine for opening the contents 2 in this type of gusset bag are devised.

That is, when the contents 2 are not contained, that is, when both sides 1A and 1B shown in FIGS. 1 and 2 are valley-folded, the opening perforations 7 are punched from the front side to the back side. In the illustrated example, one of the gussets is opened from the gusset 8 on the left side.
The perforation 7 is located at a position corresponding to the inner depth of the valley 1a of the gusset 8, in the illustrated example, a position between the valleys 1a and 1b, and extends from the upper position substantially diagonally outward and downward through the gusset 8 or 1A on the surface. It reaches near the ridge 10 between 9 and the gusset, and when the contents are packaged, the shoulder part 8a of the gusset 8
It consists of a first portion 7A for forming the first portion 7A, and a second portion 7B extending downward from the terminal end of the first portion 7A.

Thus, by punching out the perforations 7 from the surface 9 side, approximately arch-shaped continuous perforations are formed in the gusset 8 portion.

To open the bag, press the small convex part 7a at the top of the perforation 7 with your fingertips from the gusset 8 side of the bag, then pinch it out, break it sequentially along the perforation 7, and pull out the tongue piece 8b while opening. do. After opening, take out the contents 2 from the opening. In this case, since the bag is taken out from the gusset, it does not lose its shape and the opening becomes less noticeable.

By the way, as a material for bags, for example, biaxially stretched
50-100μ polyethylene is used. When opening the package, it is necessary to break it smoothly along the perforations. If the bag is easy to tear, it will break if the bag is dropped and the contents will come out, and if it is difficult to tear, it will not only take time to scan the bag, but also cause the bag to tear at places other than the perforations. It gets dirty.

Therefore, in the present invention, in relation to the form of perforations described above, if the same perforations are made over the entire length, the shoulder portion 8a is difficult to tear, so the perforation interval in the first portion is made small; The second part has a uniform breaking strength.
For example, the perforation length and pitch (non-perforation length) may be 2 mm in the first portion, and the perforation length and pitch may be 3 mm in the second portion. Normally, the perforation length is preferably 1.5 to 3.5 mm, and the pitch is preferably 1.5 to 3.5 mm.

[Effect of idea]

As described above, in the present invention, a small convex portion is provided at the top of the opening perforation, which widens at the end, making it easy to break. In other words, at the beginning of the break, if you press the small protrusion with your finger, the perforation part will break, so after that, if you pinch the area surrounded by the small protrusion with your fingers and pull it toward you, the break will start from the small protrusion. The first part is successively connected, and finally the second part is also broken, resulting in an opening large enough to easily take out the diaper.

Further, since the gusset is used as an opening part, it has an excellent appearance, and since the opening perforation is formed by punching out the perforation from the surface, the perforation can be formed even in the shoulder part of the gusset, which is usually difficult to form. Furthermore, when used as a carry-on bag, it has the following advantages: it is less likely to break when carried or transported, and it is easy to take out only one piece without the load collapsing.

[Brief explanation of the drawing]

FIG. 1 is a front view of the contents in an unaccommodated state, FIG. 2 is a view taken along the - line, FIG. 3 is a perspective view of the contents in an accommodated state, and FIG. 4 is a perspective view of a perforation in a broken state. 1A, 1B... Side (at the time of valley folding), 2... Contents,
7... Perforation, 7A... First part, 7B... Second part, 8... Gusset, 8a... Shoulder part, 9... Surface, 10... Ridge.

Claims (1)

[Scope of Claim for Utility Model Registration] In a gusset bag for accommodating a plurality of disposable diapers, which is constructed by valley-folding both sides of a cylindrical plastic tube to form a gusset and heat-sealing the upper and lower ends: The gusset is valley-folded. From one surface side in a state where the contents are covered; at a position corresponding to the inner depth of the valley of the gusset, and from the upper position, pass through the gusset part diagonally outward and downward until it reaches near the ridge between the surface and the gusset; when the contents are encapsulated. A first part is formed at the shoulder part of the gusset, and a second part descends downward from the end of the first part, and a perforation is punched on the back side, and a substantially arch-shaped opening perforation is formed in the gusset. A gusset bag for storing disposable diapers having opening perforations.