JPH047072Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a product packaging bag with a core material.

It is widely practiced to insert a plastic core sheet into product packaging bags to stabilize the shape of the product packaging bag, improve appearance when displaying products, and facilitate transportation and packaging.

On the other hand, in the case of product packaging bags, it is essential to print information such as information for promoting, advertising, and explaining how to use the product on the product packaging bag.

However, in conventional cored product packaging bags in which the front film is simply continuous with the back film of the core sheet, printing is possible on the front film or the back film, but the core sheet is It is not possible to print on it.

If you want to print on the core material sheet of a product packaging bag with a core material using the conventional method and then continuously mass-produce it, you can use a long core sheet that is printed in the same way as a long bag film that has been pre-printed. The bag must be manufactured by combining plastic sheets and cutting them to fit the width of the bag. In the continuous bag-making process, if the printing is performed separately on the film and the sheet in this way, when the two are put together to form a bag, the printing cycles on the two will inevitably deviate.

For these reasons, product packaging bags with printed core materials cannot be manufactured.

An object of the present invention is to provide a product packaging bag with a core material that can provide printed information on the inner surface of the bag body of the core sheet and can be manufactured by a continuous manufacturing process.

The present invention provides a plastic product packaging bag having a bag body formed of a thin front film that is transparent or translucent and a back sheet that is made of a thick opaque core sheet of plastic. This product packaging bag is characterized in that a continuous thin film is laminated on both sides of the core sheet, and printing is applied to the thin film surface.

In the present invention, printing is not performed on the core sheet itself, but by fixing a printed film that is continuous with the front film to the core sheet, it provides the same effect as printing on the core sheet. .

A slightly thick thermoplastic plastic sheet is suitable for the core material sheet used in this invention, and synthetic paper or filler-containing plastic sheets can also be used, but in order for the printing to stand out, it is preferable to use a white or light-colored opaque one. .

The present invention will be explained in more detail with reference to drawings of embodiments.

In FIGS. 1 and 2, the front film 1 is integrally and continuously connected to the inner film 3 via the header portion 6 and the back film 2. The core material sheet 4 is sandwiched between the back film 2 and the inner film 3 in a sandwich-like manner, and the inner film 3 and the back film 2 are attached to the core material sheet 4 at the side edge fused portions 8 and the side edge fused portions 9. It is fixed by fusion.
This fixing method is convenient because it can be accomplished at the same time as the step of fusing and cutting the side edge fused portions 8 and 9.

If it is desired to securely fix the inner film 3 onto the core sheet 4, the inner film 3 can be fixed on the entire surface of the core sheet by applying a heat-sensitive adhesive onto the core sheet.

In this way, not only the fixation becomes strong, but also the original purpose of the product packaging bag with a core material, which is to stabilize the shape of the product packaging bag with a core material, can be effectively achieved.

The header portion 6 is partitioned by a header seal 7, and a hanging hole 10 is provided in the center of the header portion 6 for use in displaying merchandise. Usually, the film on the surface of the header portion 6 is also printed.

Adhesive 11 and release paper 12 are provided in the opening at the bottom, which can be used to seal the opening.

The product packaging bag with core material of this invention has front film 1,
Since the back film 2, the header portion 6, and the inner film 3 are integrally continuous, a long film is printed in advance on the surfaces corresponding to the front film 1, back film 2, header portion 6, and inner film 3. A long plain thick sheet for the core material is folded so that it has the same cross-sectional structure as the vertical cross-sectional view shown in the figure, and is then folded for each width of the bag body, that is, for the printing of front film 1. By fusing and cutting in accordance with the cycle, a product packaging bag with a core material can be manufactured without misalignment of the printing on the front film 1, back film 2, header portion, and inner film 3.

The product packaging bag with a core material of the present invention makes it possible to print on the surface of the core material sheet 4 inside the bag, which provides a new effect that could not be obtained with conventional product packaging bags with a core material. give.

That is, in the conventional product packaging bag with a core material, printing was limited to only the front film 1, so if too much was printed on the front film 1, the product inside would become invisible.

In the product packaging bag with a core material of the present invention, the amount of printing on the front film 1 can be reduced so that it can be printed as a background of the product.

This is a very effective effect for product packaging bags where appearance is important.

The product packaging bag with a core material of the present invention is not limited to the embodiment shown in FIG. 1, but can be applied to all kinds of product packaging bags with a core material.

For example, a product packaging bag with a core material shown in longitudinal cross-sectional views in FIGS. 3 to 5 can be mentioned.

The product packaging bag with core material in Figure 3 has an inner film 3.
covers only the inside of the bag, and there is no inner film 3 on the core sheet in the header portion. Based on the same idea, the inner film 3 can also be formed only in the lower half of the bag.

The embodiment shown in FIG. 4 differs from FIG. 1 in that the front film 1 and the inner film 3 are directly connected, and the back film 2 is connected to the inner film 3.

FIG. 5 shows an embodiment of a product packaging bag with a core material without a header and having an opening at the top.

The product packaging bag with core material of this invention can print more information than conventional ones, and the printing method can be varied, so it is a very useful idea from the point of view of product sales. It is.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a product packaging bag with a core material according to an embodiment of the present invention, and FIG. 2 is a front view thereof.
3 to 5 are longitudinal cross-sectional views of a product packaging bag with a core material according to another embodiment of the present invention, and the symbols in the figures are 1...Front film 1, 2...Back film, 3... ...Inner film, 4... Core material sheet, 5... Bag body portion, 6... Header portion, 7...
Header seal, 8, 9...Side edge fused portion, 10...
...Hanging hole, 11...Adhesive, 12...Release paper.

Claims (1)

[Scope of utility model registration request] A plastic product packaging bag having a bag body formed of a transparent or translucent thin front film and a thick opaque plastic core sheet backing sheet, which is integrally continuous with the front film. 1. A product packaging bag, characterized in that a printed thin film is laminated on both sides of the core sheet, and the printed surfaces of the thin film are arranged on both sides of the core sheet.