JPH0253293B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing a package, and in particular to a low-cost package that accommodates a large number of arranged pouches and can be easily disposed of.

(Prior Art) Until now, packaging bodies for accommodating a large number of arranged sachets have been manufactured using the members and processes shown in FIG. 5A. That is, a container a is manufactured using a vacuum forming machine made of plastic, mainly vinyl chloride resin, and 20 to 30 individual packages b containing soup, sauce, ingredients, etc. are packed by hand into the container a, and preprinted and ruled. Insert the processed and punched paperboard cover c to cover the individual package b stored as shown in d, and insert the four flaps c ₁ of the cover c to the inner surface of the side wall of the PVC container (tray) a. Then, the lid c and the container a are glued together with cellophane tape e, and the container is distributed. B is a cross-sectional explanatory view of a container secured with tape (individual packaging b is omitted from the figure).

In addition, 20 to 30 of the above-mentioned individual packages are individually packaged in plastic bags, and after distribution, they are sold in designated cases at stores.

(Problem to be solved by the invention) However, the former method requires many steps, such as molding the container and the cover separately, so it is not necessarily good in terms of workability and cost. .

In addition, the latter method not only looks bad in stores, but also gives a bad image as it is mixed with other companies' products.
Sales efficiency is declining. The current situation is that the packaging is changed to a container by clearly displaying the company's name, but there are also problems in that the packaging cost is high and the container loses its cosmetic or advertising properties, especially after the lid is opened.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems. The cylindrical body is cut into long pieces, the cylindrical body is placed over a mold, one of which is heat-shrinked, and the primary molded body is pulled out from the mold.
A method for manufacturing a package, characterized in that a primary molded body into which individually wrapped packages are inserted through an unshrinked open part is stored in a mold whose height is lower than that of the primary molded body, and the opened part is heat-shrinked. be.

(Function) Since the present invention has the above-mentioned configuration, after inserting the individual package containing the article into the primary molded body in which one side of the heat-shrinkable plastic film cylinder has been heat-shrinked, the unshrinked portion is opened. Shrink and package.

(Example) The method of the present invention will be explained below with reference to Examples.
The heat-shrinkable plastic film cylindrical body may be formed by heat-sealing both side edges of a film sheet into a cylindrical shape, or a tube-shaped body may also be used from the beginning. FIG. 1 is a process diagram showing a method for manufacturing a package according to the present invention. A is a long cylindrical body of heat-shrinkable plastic film, and in step A, it is cut into a predetermined size, that is, longer than the height of the mold 2. Manufacture. Next, in step (b), the tube 1 is placed over a predetermined mold 2. The shape of the mold 2 is a truncated cone or a truncated pyramid, which is convenient for inserting a large number of individual packages and for taking out the individual packages. Next, in step C, the heat-shrinkable plastic film tube 1 is passed through a heat-shrinkable tunnel T shown in FIG. C is an endless conveyor, on which a large number of molds 2 are mounted at predetermined intervals. The hot air inside the tunnel is heated at 80°C to 120°C if the heat-shrinkable plastic film is made of vinyl chloride, or 120° to 130°C if it is made of polypropylene or polyethylene. A primary molded body 3 is formed by heat-shrinking and leaving a partially unshrinked portion that follows the outer shape of the mold. Here, since the lower part 4 (not shown) of the mold is suppressed from shrinking, an unshrinkable open part is formed. In step 2, when removed from the mold 2 and moved up and down, the upper part opens slightly outward, and at this stage, a large number of individual packages 5 containing articles are arranged mechanically (or manually) from the upper opening. Insert it and it will be in the state shown below. In the next step, another tube approximately shown in FIG. 2 is passed through a similar heat-shrinking tunnel T' shown in FIG. 3 [ ]. The frame mold 2' in this case is mounted on a conveyor C' similar to that shown in FIG.
It is set so that it appears above the mold 2'. In this process, the individual packages 5 are assembled and the whole is tightly enclosed within the heat-shrinkable plastic film, and the product B
It can be done.

In order to make it easier to take out the individual packages, opening perforations m can be added as shown in Figure 4.In addition, to prevent dust from entering, a mount can be placed above or below the group of individual packages, or on both sides. It is also possible to increase the stability of the product.

The heat-shrinkable plastic film used in this invention tends to become thinner at the corners of the mold due to heat-shrinking processing, so it is desirable to use a film with a thickness of 50 to 400 μm depending on the size of the shape. is safe. Note that FIG. 4 is an explanatory view of the external appearance of a package B made according to the present invention, which has perforations m.

(Effects) The present invention has the above-mentioned configuration, and the packaging body can be produced at a low cost with extremely reduced materials, and therefore can be easily disposed of, and when the contents of the individual packaging body are liquid, Even if liquid leaks due to damage, it is extremely easy to wash the whole thing and drain it. In addition, it is easy to print on the sides, allowing for high quality printing, and it is easy to open, especially if perforated. In addition, since the top and bottom portions are thicker, the package has a good balance of strength as desired. This package has increased the retail volume of individual packages containing sauces and ingredients for ramen, soba, udon, eel, etc., and is excellent in terms of display effect in stores and ease of removal.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the process of manufacturing a package of the present invention, FIGS. 2 and 3 are explanatory diagrams of a heat shrinking apparatus for a heat-shrinkable film, and FIG. FIG. 5 is an explanatory diagram of the process of a conventional method for manufacturing individual packages for distribution. 1... Heat-shrinkable plastic film cylindrical body cut into a predetermined shape, 2, 2'... Mold, 3... Primary molded body, 4... Unshrinked portion, 5... Individually packaged body, A
...Long length of heat-shrinkable film cylinder, B...product, C, C'...conveyor, T, T'...heat-shrink tunnel, m...perforation.

Claims (1)

[Claims] 1. A heat-shrinkable plastic film cylinder is cut to a length longer than the height of a truncated cone or truncated pyramid mold with predetermined dimensions, the cylinder is placed over the mold, and one of the cylinders is heat-shrinked. Production of a package, characterized in that the primary molded body into which individually wrapped packages are inserted through the unshrinked open portion after being pulled out is stored in a mold lower than the height of the primary molded body, and the opened portion is heat-shrinked. Method.