JPH0465230A - Full-automatic preparation of paper bag with hand strap - Google Patents

Abstract

PURPOSE:To full-automatically prepare a square bottom type paper handbag by a through process by preliminarily molding a handle from plastic to bond the same to the upper part of a paper bag. CONSTITUTION:A plastic solution is applied to the handle part and square bottom part of cut paper and reinforcing paper is bonded to the handle part. This body part is bonded to be folded so as to form inner pleats. Subsequently, reinforcing paper is inserted in the square bottom part and the square bottom part is successively folded longitudinally and laterally to bond the folded inside parts and further folded so as to be closed to be subjected to bonding processing. In a handle bonding process, a projection 1 is inserted in the hole bored in the handle part and a projection inserting hole 5 of an adhesive plate 4 is inserted to perform press processing. The mounting plate 2 of a handle having no projection 1 is pasted and the handle part and the mounting plate of the handle are stapled from the upper part of the mounting plate 2 of the handle by an automatic stapler.

Description

[Detailed description of the invention] (1) The present invention relates to a method for manufacturing a paper bag with a handle.

(2) None of the paper bags with handles currently in common use are manufactured by machines. The only parts that can be manufactured by machine are the vertically folded body part of the paper bag and the bottom of the paper bag. It is considered that the process of attaching the hanger cord and tying it is completely impossible by machine, and these processes are all performed manually by artificial processing operations, which is inconvenient as the paper bag with the hanger cord is manufactured.

(3) The present inventors have completely solved the above-mentioned drawbacks and have made an epoch-making invention that enables the manufacturing process of paper bags with handles to be manufactured fully automatically using machines.

That is, first, the hand-hanging handle part is not attached by conventional binding with hemp string, etc., and instead, a hand-hanging handle that is pre-molded from plastic or the like is prepared, and this is attached to the top of the paper bag. In addition to solving the problem,
Instead of attaching cardboard for reinforcement and folding in the back side of the paper bag, we solved the problem by first attaching the hand handle and then attaching the paper bag. Furthermore, the horizontal weaving to strengthen the lower part of the hand improves 1. After that, in the pasting process with the body part, the overlapped part of the upper folded part and the body pasted part was made separately for reinforcement because the adhesion was incomplete even if the pasting press process was performed. Developed by. In addition to double-equipped all-purpose vertical staplers, we were able to perform staple binding using these to fully automatically manufacture paper bags with perfect hand closures that would not be easily damaged.

The following is a description based on examples.

(4) A detailed explanation will be given based on an embodiment of the present invention, starting from some drawings. The manufacturing process for paper bags with handles is as follows: (a) The cut raw material paper is folded horizontally (upper part) and vertically (body part) using a machine, and then stretched again. (This is done by folding it in advance in order to prevent it from slipping during pasting.)

Next, after being processed in step A above, the stretched paper was cut into appropriate pieces for reinforcement in order to attach the hand handle to the upper part (where the hand handle is attached). In order to attach two sets of pre-prepared cardboard to the left and right, we applied adhesive and processed it, and then applied adhesive to both ends of the fold (horizontal lower part). Then, fold this part (hand-hanging part) horizontally in parallel and apply the upper part.

Next, attach the plastic or vinylon handles (as shown in Figure 1) from above the two sets of left and right reinforcing cardboard parts that have been folded in at the opening above. A drilling process is performed to make two holes in each of the cardboard (for a total of four holes).

21. Next, insert the protrusion (1) in Fig. 1 of the plastic or vinylon hand handle into the hole drilled in step C above and attach it.

(Incidentally, the head of this protrusion (1) is molded into a cap shape with a cut.) E6 Next, above the protrusion (1) of the hand handle inserted in step 2 above. from,
Separately, as shown in FIG. 2, a previously prepared adhesive plate (4) made of plastic or vinylon is fitted and press-fitted. (In this case, since the head of the protrusion (1) is molded in the shape of a cap with a cut, the adhesive hole (5) in the adhesive plate (4) will be inserted by pressure during press processing. (Following the process described in E above, the vertical part (body part) of the paper bag is folded in again, and then the adhesive is applied to the folded part of the body part.) , Paste and press this part.

(Attached to the body).

G0 Next, when pasting is done in the above step, the folded part of the upper part of the paper bag will be pasted on the back side and the pasted part with the body of the paper bag will be incomplete, so please avoid damage due to incomplete pasting. In order to prevent this, the inventors perform a stapling process using a vertical automatic stapler with double stacks, which was separately developed by the inventors. (In addition, when producing paper bags with small hand closures, the double-stacked vertical stapler is installed so that only one of the double-stacked staplers operates, and when producing paper bags with large hand closures. If this is the case, install a double stapler so that it works on both sides so that it can be adjusted freely depending on the size of the paper bag. After processing the bottom (lower part) of the semi-finished paper bag,
Insert and attach the bottom reinforcing cardboard (prepared to be cut to an appropriate size).

Step 1: Next, apply adhesive to the folded foil part at the bottom of the paper bag in step 1 above, and then apply the adhesive and press it.

Wow, it's complete and ready.

A fully automatic method for producing paper bags with hand closures, in which the entire process is carried out by machine in the order leading to the above-mentioned A-glass, or by a combination of the above-mentioned processes. Incidentally, the above-mentioned processes A and G can be omitted if they are unnecessary steps depending on the thickness and material of the paper.

(5) With the creation of the fully automatic paper bag manufacturing method with hand closures according to the present invention, all kinds of paper bags with hand closures can be manufactured fully automatically, and no manual processing is necessary. The benefits to industry and society are immeasurable as it has become possible to perform an integrated process in the factory, from printing and cutting paper bags to completing paper bags with handles.

[Brief explanation of drawings]

Figure 1 is a sketch of the hand handle. Figure 2 is a sketch of the back side adhesive board. 1... Protrusion (for attaching the hand handle). 2... Reinforcement plate (lower handle). 3... Hand-down handle. 4... Adhesive board (for the back of the hand handle). 5... Protrusion insertion hole (for the back of the hand handle).

Claims (1)

[Claims] As a manufacturing process for a paper bag with a handle, a. The horizontal and vertical parts of the raw material paper are folded and stretched. B. Apply adhesive to the two sets of reinforcing cardboard for attaching the hand handle to the upper part of the paper bag mentioned in A above, and then fold the upper part of the hand part and apply adhesive to both ends, and then fold and attach them. C. In step B above, drill a hole in the upper part of the handle to attach the plastic or vinylon handle. D. Insert the protruding part of the handle made of plastic or vinylon into the hole in C above and process it for installation. E. Insert a plastic or vinylon adhesive plate over the attached protrusion part (d) and press attach it. F. Repeat the vertical folding process, apply adhesive to the adhesive area, and press the pasting process. G. Stapling is performed using a double-equipped vertical automatic stapler on the contact surface between the end of the folded portion at the top of the hand-hanging portion and the vertically folded body portion, which is incompletely adhered in the above step. H. Fold the bottom of the paper bag as described above, and insert and attach the bottom reinforcing cardboard. 2. Apply adhesive to the folded part of above 1 and press it. A fully automatic method for producing paper bags with hand closures, which is machine-manufactured by the above-mentioned sequence or a combination of the above-mentioned processes.