JPH01294442A - Bag with adhesive - Google Patents

Abstract

PURPOSE:To improve the workability and make the supply of bags with adhesive easy, by applying an adhesive at the opening of a bag, protecting the adhesive with a release sheet, and using the release sheet for more than two bags at a time. CONSTITUTION:Envelopes 1 are placed so that approximately half parts of tongue pieces 2 are exposed, and an adhesive 3 is applied on these exposed parts. Using a separating sheet 4, which is larger than the exposed parts of envelopes 1, the adhesive 3 is covered, and a condition under which a large number of bags are attached to a sheet of the release sheet 4 is given. Further, when a material for the release sheet 4 is thin, the release sheet 4 is bent in a stair shape; however, if an ordinary release sheet with tension is used, the stair shaped wrinkles are not given to the release sheet, and the tongue pieces 2 are placed closely without space. At the time of use, envelopes can be removed in order from an envelope at the outermost end 1a.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a bag whose opening is coated with a sealing adhesive. The present invention relates to a protective bag.The present invention provides an envelope that does not require glue when sealing by applying it to a tongue piece for sealing a paper envelope.
A plastic bag can be coated with a weak adhesive and used repeatedly as a sealed bag.

[Conventional technology]

Conventionally, envelopes are sealed by applying adhesive or pressure-sensitive adhesive to the tongue extending from the opening, but in order to make the sealing process easier, adhesive is applied to the tongue in advance. There are products in which the adhesive is protected with release paper.

Regarding plastic bags, when it is desired to repeatedly reseal the bags, there are so-called zipper bags, which have male and female thick parts that fit into the bag openings on the front and back sides.

Alternatively, there is also a plastic bag in which an adhesive and a release sheet are provided on the tongue of a plastic bag with an extended tongue so that the bag can be sealed.

[Technical problem to be solved by the invention]

However, adhesive-divided envelopes require time and effort to coat each envelope with adhesive and cover the adhesive with release paper, resulting in expensive bags. There was an inconvenience that small release papers were scattered during use. Furthermore, since the zippered bag has male and female thick parts, the manufacturing process is complicated, and when using the bag, the weight is biased toward the thick part, making it difficult to handle. Therefore, there has been a need for a simple method for applying an adhesive for sealing the bag mouth to these various bags all at once, and also applying a release sheet to protect the adhesive at once.

[Technical Problems to be Solved by the Invention The present invention aims to solve the above-mentioned problems, and consists of a bag in which an adhesive is applied to the opening of the bag and the adhesive is protected with a release sheet, It is characterized in that one release sheet is shared by two or more bags.

The bag according to the present invention is used for bags having tongues such as envelopes. The material is used for envelopes such as paper and plastic, as well as bags with tongue pieces for repeated sealing. Furthermore, even if the bag does not have a tongue piece, it may be provided inside the bag opening. Alternatively, even if adhesive is applied to the outside of one bag opening, if the bag opening is bent in the direction in which the adhesive is applied after inserting the contents, the entire bag opening will not be sealed, but both ends of the bag will be bent. Since the bag is maintained in a closed state, the bag mouth cannot be opened sufficiently, and depending on the type of contents, scattering can be prevented and a certain sealing effect can be achieved.

As the adhesive, all commercially available adhesives and adhesives can be used. For bags that cannot be resealed, such as envelopes, a slightly stronger adhesive is preferred.

On the other hand, for bags that are intended to be reopened and resealed, such as a plastic film bag with a tongue piece, a pressure-sensitive type weak adhesive is preferable.

In the case of a plastic bag with a tongue piece, the material is thin, so it tends to be difficult to remove only the tongue piece when resealing the bag. For this reason, resealing becomes easier if a portion of the tongue, preferably the tip, is provided with a portion to which no adhesive is applied. In order to create such areas where the adhesive is missing, a release agent such as silicone may be applied to the area where the adhesive is to be removed, and masking may be applied so that some missing areas remain when applying the adhesive. There are other methods, such as applying it in stripes in advance.

In the case of a bag having a tongue, the area to which the adhesive is applied is all or a part of the tongue, and in some cases, the edge is preferable.

The range and area to which the adhesive should be applied varies depending on the strength of the adhesive, and if the adhesive is strong, the objective will be achieved even if the area to which the adhesive is applied is somewhat small. In the case of a bag without a tongue, it is preferable to apply the tongue around the opening, and it is preferable in terms of use to apply it inside, but since it is difficult to manufacture, it is possible to achieve the purpose even if it is applied outside one of the peripheral parts. When applying the adhesive, a large number of bags are stacked one on top of the other, shifted by the width to which the adhesive is to be applied, and the adhesive is applied to the shifted sides all at once.

When applying the present invention to a paper envelope, the tongue piece is folded inward for sealing, so it is easier to handle if a pressure line is applied in advance to the area to be folded inward. To provide a pressure line, a linear tool is pressed from the side of the tongue to be folded, and the paper fibers are locally compressed and bent.

Any release sheet can be used as long as it has a higher affinity for the adhesive than for the bag material, and not only so-called release paper coated with silicone resin, but also simple plastic sheets such as polyester, nylon, and polypropylene can be used. can. This kind of release sheet is 2
If the above-mentioned bags are to be used in common, a large number of bags may be shifted and stacked, an adhesive may be applied to the shifted portions, and the tops thereof may be collectively covered with a single release sheet.

If it becomes necessary to stack each bag without shifting them during distribution and storage, make perforations or other cutting lines on the release sheet in advance, tear the release sheet at a desired location as necessary, and then
Each bag can be divided into one bag or several bags.

- [Function] The present invention involves stacking a large number of bags on top of one another with the areas to be coated with adhesive exposed, and - applying adhesive all at once. A release sheet is attached.

Therefore, a small release paper is attached to each bag.
It saves time and greatly improves work efficiency and efficiency.

To use, just peel off the release sheet one by one to expose the adhesive and stick it on (there is no risk of small release sheets scattering if you use a large amount).

〔Example〕

FIG. 1 is a perspective view of the present invention applied to a paper envelope, and FIG. 2 is a sectional view thereof.

Reference numeral 1 indicates an envelope, and reference numeral 2 indicates a tongue piece. In this example, they were stacked so that about half of the tongue pieces were exposed, and adhesive 3 was applied to the exposed portion. Immediately, the adhesive 3 was covered using a release sheet 4 that was wider than the exposed area of the envelope 1. As a result, a large number of bags were attached to one release sheet. Second
Since the figure is a schematic representation, spaces are shown equally spaced between the tongues, but in reality, this space disappears at the tip, and the tongues are in close contact with each other. Furthermore, release sheet 4
If the material is thin, use a release sheet 4 as shown in Figure 2.
is bent in a step-like manner, but if a regular release sheet with tension is used, the release sheet will not have step-like wrinkles and the tongue pieces 2 will be tightly attached without any gaps. When using the envelope 1a at the end
You can peel it off one by one.

FIG. 3 is a perspective view of a plastic bag without a tongue in which an adhesive is provided on the outside of one of the openings.

5 is the front side of the plastic bag, and 6 is the back side of the plastic bag. The contents are inserted into the bag that has been peeled off from the release sheet 4, and the opening 7 is bent toward the surface 5 as shown by the imaginary line. In this case, the opening 7 remains open, but since the bag mouth is forcibly bent, somewhat large contents can be accommodated without spilling.

〔effect〕

The present invention, in which the adhesive-applied part of the bag mouth is shifted and exposed, the adhesive is applied to this part, and then the release sheet is attached all at once, greatly improves work efficiency and further facilitates the supply of adhesive-coated bags. It got easier. Furthermore, since the release sheet is not cut before use, there is no risk of the release sheet pieces being scattered after being peeled off, and even when using in large quantities, the effort of peeling off the release paper one by one can be omitted.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is a schematic cross-sectional view of FIG. 1, and FIG. 3 is a perspective view showing a bag without tongue in use. be. In the drawings, reference numeral 1 is an envelope, 2 is a tongue piece, 3 is an adhesive, 4 is a release sheet, 5 is the front surface of the plastic bag, 6 is the back surface of the plastic bag, and 7 is an opening.

Claims (1)

[Claims] A bag with an adhesive applied to the opening of the bag, the adhesive being protected by a release sheet, characterized in that one release sheet is shared by two or more bags. .