JPH02165939A - Manufacture of bag - Google Patents

Abstract

PURPOSE:To omit a step of folding a U-shaped handle by previously forming a short cutout near the adhered part of the U-shaped handle when a tubelike part of a sheet is out, and then cutting it except the handle. CONSTITUTION:A pair of front and rear handles 5, 5, are adhered to determined positions of a sheet 1 having a predetermined sheet 1 continuously fed in a developed state in a nonfolding manner, shot cutouts 12, 12' laterally crossing the base ends are out at the positions corresponding to the base ends of left and right sides 10, 10' of the rear handle 5 at the sheet 1, the sheet 1 is then formed in a tubular state, the tubelike part 13 is out at a round cutting line continued to both ends of the cutouts 12, 12' to form a structure 19 of one bag, and a bottom 19 is provided at the structure 19 to obtain a complete product. Thus, the bag can be formed without folding the U-shaped handles to obtain a complete product having no folding trend at the handles.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing paper bags with handles, with gussets, without gussets, with square bottoms, and with regular bottoms.

[Conventional technology]

Conventionally, as shown in Figure 5, this type of bag has been manufactured by attaching a pair of U-shaped handles in a folded state to a predetermined location on a sheet of paper of a predetermined width that is continuously fed out in an extended state. The process of forming the paper into a tube shape, the step of cutting the Y-yup-shaped portion along the cutting line to obtain a structure for one bag, and the step of providing a bottom to the structure are performed in the listed order. The characteristic format is known.

(Problem to be Solved by the Invention) The type described in the above-mentioned prior art is such that when the duvet-shaped part is cut into pieces along the cutting line, the handle is also cut off, so the U is folded in advance. It is necessary to use a ji-shaped handle, which means that you can only obtain a finished product with a folded handle, and when using the finished product, the folded handle must be pulled out. It is cumbersome, and furthermore, the folded handle requires additional processing to be folded.

The object of the present invention is to provide a new method for manufacturing bags that can be manufactured using unfolded handles.

[Means to solve the problem]

In order to achieve the above object, the method for manufacturing the bag of the present invention includes the steps of attaching a pair of U-shaped handles in an unfolded state to a predetermined location of a sheet of paper of a predetermined width that is continuously fed out in a stretched state. , a step of cutting short notches in a direction across the respective base ends of the paper at locations corresponding to the base ends of both the left and right sides of one hand, a step of making the paper into a tube shape, and a step of making the paper into a tube shape. A step of cutting the section on a circular cutting line continuous with both ends of the cut to obtain i-pieces of structures, and a step of providing a bottom to the structure are performed in the listed order.

〔Example〕

In the embodiment shown in the figure, a sheet (1) of a predetermined width is continuously fed out from a feeding section (not shown), and a front plate forming portion (2) and a rear plate forming portion (3) are formed on this sheet (1). Mounting piece (4) separately configured in advance at the location that will become the opening edge when completed
A pair of front and rear U-shaped handles (5) (5) ' are pasted in an unfolded state, and the moving path of the extended portion (8) of the paper (1) before it becomes a tube shape. A pair of actuating arms (9) (9)' that swing their tips at regular intervals are provided on the lower side of the handle (9) in a position corresponding to both the left and right sides Ql (11') of the pulling hand (5). A narrow-width jagged blade aυaυ' for making cuts is attached to the tip of each actuating arm (9) (9)', and this jagged blade α1) (113' for making cuts) is the actuating arm (9) (9)'.
When the ib was raised by the paper (1), it strongly hit the parts corresponding to the base ends of the left and right sides of the handle (5)' on the paper (1), and due to the tension between this sheet and the paper (1). The jagged blade for making the cut α1) (l
A notch a3 (13') is cut at the location where υ' is.

Furthermore, the left and right V-spear forming portions (6) (6)' and the glue allowance (force is applied to the folding guide device (not shown)) and the edges of the front plate forming part (2) and the glue allowance are folded. (7) is pasted with a gluing device (not shown) to form the paper (1) into a tube shape.

In addition, a cutter roll α has a jagged cutting blade Q4) facing the tubular part above the movement path of the tubular part α■.
9 is also equipped with a receiving blade roll aQ with a jagged blade for shredding on the lower side so that the cutter roll α9 and the receiving blade roll (IQ are synchronized), and the blade receiving part (I
T) is aligned with the cut α
3 is placed on the same blade receiving part (front and rear hand T5 at lη) (5) Both left and right sides of ' (1 (1u)) are placed on both the left and right sides of the same blade during the shredding function with the jagged cutting blade α part (1[1(1G' escape part [8(
18" is provided, and the jagged blade α for shredding is placed on the blade receiving part α.
When it comes into contact with a force, the tube-like part α3 is cut into pieces on the ring cutting line continuous with both ends of the cut αoz' to form a structure α for one bag.
], and further, a bottom forming part (not shown) is continuously disposed in front of the movement path of the structure (I), and the bottom part of the structure α1 is separated by this bottom forming part. is made to have a square base (A) to obtain the finished product Qυ.

In addition, the above-mentioned paper (1) feeding section and hand (5) (5)
Since the pasting part, the folding guide device, the gluing device of the gluing margin (7), and the square bottom forming part are common, a detailed explanation thereof will be omitted.

[For production]

Since the present invention is the above-mentioned thread, a pair of front and rear handles (5) +51' are attached in an unfolded state to a predetermined location of a paper (1) of a predetermined width that is continuously fed out in a stretched state. At the same time, in the paper (11), short incisions α2α' are cut in the positions corresponding to the base ends of both left and right side parts αIcLI' of the drawing handle (5), in a direction that crosses each of the base ends, and then,
The paper (1) is made into a tube shape, and the tube-shaped part (13 is cut along the cutting line continuous with both ends of the cut α: JC13' to form a structure α for one bag), and this structure A finished product is obtained by providing a bottom on the body a9.

〔Effect of the invention〕

The present invention consists of ``a step of attaching a pair of U-shaped grips in an unfolded state to a predetermined location of a sheet of a predetermined width that is continuously fed out in an expanded state as described above; A step of cutting short notches in a direction that crosses each base end at locations corresponding to the base ends of both left and right sides of the sheet, a step of forming the paper into a tube shape, and a step of cutting the tube-shaped portions at both ends of the notches. The method is characterized in that the process of cutting it into pieces on a continuous ring cutting line to obtain a structure for one bag, and the process of providing a bottom to the structure are listed in a class, so that the U-shaped handle can be folded. In other words, it is possible to produce a bag without any folds in the handle, in other words, it is possible to obtain a finished product without any creases in the handle, and there is no need to pull out the handle when using the finished product. This provides excellent effects such as the ability to omit the process of folding the product.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the manufacturing method of the bag of the present invention, Fig. 2 is a side view showing the part of the jagged blade for cutting in the device for carrying out the implementation, Fig. 3 is a perspective view, and Fig. 4 is the same. FIG. 6 is a side view showing a portion of the jagged blade for shredding, FIG. 6 is a perspective view showing a finished product, and FIG. 7 is an explanatory view showing a conventional manufacturing method. (1)...Paper, (2)...Front plate forming component, (3)
...Rear plate forming component, (4)...Mounting piece, (5)(
5)'...Handle, (6)(6)'...Right and left V complementary parts, (Force...Glue allowance, (8)...Extension part, (9
) (9) ゛... Actuation arm, αI(IG'...
・Both left and right sides, αυαυ'...Jagged blade for cutting, as aa'...Cut, αJ...Tubular part, I...Jagged blade for shredding, α911. Cutter roll, (I119...blade roll, αη...blade receiving part, αυ珀'...relief part, 09...structure, kiln...
Square bottom, Ca1)...Finished product. Patent Applicant: Super Bag Co., Ltd. - 25' Submitted: Serrated blade for making incisions in hand-extended parts Serrated blade for cutting tubular parts Blade receiving part - Nishi procedure correction room (method) % formula % Correction of the following rules do. 1. Indication of the case 1986 Patent Application No. 322570, page 9, line 3 ``Side view,'' followed by 2゜ Title of the invention Manufacturing method for bags ``Figure 5 is also a perspective view, Amendment person case Relationship with Patent applicant: 5-18-11 Nishi-Ikebukuro, Toshima-ku, Tokyo Super Bag Co., Ltd. Representative Director Fuku 1) Insert Sadao's statement. Super Bag Co., Ltd.

Claims (1)

[Claims] A process of attaching a pair of U-shaped handles in an unfolded state to a predetermined location of a sheet of paper of a predetermined width that is continuously fed out in a stretched state, and a process of attaching a pair of U-shaped handles in an unfolded state to a predetermined location of a sheet of paper of a predetermined width that is continuously fed out in a stretched state, and a process of attaching a pair of U-shaped handles in an unfolded state to the base ends of both left and right sides of one handle on the paper. A step of cutting a short notch in a direction that crosses each base end at a location corresponding to the section, a step of making the paper into a tube shape, and a step of cutting the tube-shaped section on a circular cutting line continuous with both ends of the notch. A method for producing a bag, characterized in that the step of obtaining a structure for one bag by cutting it into pieces and the step of providing a bottom for the structure are carried out in the listed order.