JPS63191623A - Manufacture of refuse sack - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention belongs to the field of packaging containers, and is mainly used as a manufacturing method that can economically manufacture garbage storage bags for use in vehicles such as passenger cars.

(Prior technology) Polyethylene bags traditionally used for storing products in supermarkets, etc. are designed with the weight of the product in mind, so the handle structure is double-foldable and the storage space is large. The manufacturing cost is high, as both ends are folded in to make it removable, and the yield rate is low because wasteful cut pieces are produced when forming handles, etc. Therefore, garbage storage bags used inside passenger cars and other vehicles are used to prevent garbage from scattering and to dispose of it in a designated place, so they do not need a handle function, and simply have a knot that is sufficient to close the opening. If you can afford it, cheap bags are required.

(Problems to be Solved by the Invention) In view of the above-mentioned circumstances, the present invention seeks to provide an economical bag manufacturing method in terms of manufacturing cost and material yield.

(Means for Solving the Problem) This invention cuts a sheet made of a belt-shaped bag into a predetermined length, eliminates air in the sheet, and heat-welds the front and rear openings to form a sealed belt-shaped bag. (Hereafter, this is referred to as the base bag.

), and the middle part of the base bag is cut into irregularities to produce two types of bags at once. Here, when cutting the intermediate portion of the base bag into irregularities, it is possible to cut the bags one by one or to cut the bags in a state where they are laminated as required.

(Function) Since each of the four parts of the cut part and the protruding edges of the convex part serve as a knotting margin, the knotting margin can be formed without wasting material in the production of one bag.

Moreover, two types of bags are manufactured at the same time during the cutting process.

(Example) This invention will be explained in more detail with reference to examples.

As shown in Figure 1, a sheet consisting of a rolled bag is cut to a predetermined length, and the top surface is pressed and fixed to eliminate air while the openings at both ends are heat-fused to form a base bag. The middle part of the base bag is cut into irregularities to produce two types of convex bags 1 and concave bags 2 at the same time, but in this embodiment, they are tied together with a string 3 as shown in FIGS. 3 and 4. Through-holes 6 are provided in the four projecting edges 4 and the projecting edges 5 of the convex portion, which serve as knotting margins, respectively, in order to be used through the knot. Therefore, when in use, several dozen pieces are bundled and a string 3 is passed through them, and a locking means such as a suction cup 7 is fastened to the tip of the string 3, and the bag is appropriately fixed in a vehicle such as a passenger car and used as a disposable garbage storage bag. Alternatively, the required number of sheets may be stored in an appropriate bag without providing the through hole 6 for use. Incidentally, what is shown in FIG. 2 shows the dimensions and cutting relationships when manufacturing the garbage storage bag according to the present invention from one sheet 8.

In this case, with L=21, cut the central part of the sheet 8 into an uneven shape with the dimensions shown in the figure, fold it along the central fold line 9, open the overlapping part of the uneven cut surface, and heat the overlapping edge of the other L shape. By welding, the convex bag 1 and the portal bag 2 can be respectively formed. Also.

In Fig. 2, the cut piece 10 on the left is fully heat welded to the overlapping edge of the folded shape in the center along the upper and lower fold lines I1.11.

Fold the right cut piece 12 along the center fold line 9.

As mentioned above, open the overlapping part of the uneven cut surface 11 times.

By thermally welding the overlapping edges of the other L-shape, the concave bag 2 shown in FIG. 4 can be formed from the left and right cut pieces 10 and 12, respectively. Note that the mode of use of the garbage storage bag according to the present invention is not limited to this embodiment, and is shown in FIGS. 3 and 4.
The convex bag 1 and the concave bag 2 shown in the figure can be made into a male and female set and packed in a separately prepared bag for use.

(Effects of the Invention) As described above, according to the present invention, the garbage storage bag can be produced extremely economically, and therefore it can not only be provided to consumers as an inexpensive disposable product, but also be installed in the interior of a passenger car or the like. This simplifies garbage disposal, prevents unnecessary items from being thrown out of cars, and has a ripple effect that contributes to environmental purification, such as by taking garbage home to two recreational areas, mountains and fields.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing how the garbage storage bag according to the present invention is cut from the base bag, FIG. 2 is a plan view showing how the bag material sheet is cut when this invention is applied, and FIG. FIG. 4 shows how the garbage storage bag is used. In the figure, 1 is a convex bag, 2 is a concave bag, and 3. is a string, 4°5 is a ridge, 6 is a through hole, 7 is a suction cup, 8 is a sheet 9.11 is a fold line, 10.12 is a cut piece.憚2田り3　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　:

Claims (2)

[Claims] (1) A sheet consisting of a belt-shaped bag is cut to a predetermined length, the air inside the sheet is removed, and the front and rear openings are heat welded to form a base bag, and the middle part of the base bag is cut into irregularities. A method for manufacturing a garbage storage bag characterized by manufacturing two types of bags at a time. (2) In the process of cutting the intermediate portion of the base bag into irregularities, the base bag is laminated in a required number of layers and cut.
) The manufacturing method of the garbage storage bag described in section 2.