JPH04173510A - Production of erected bag with zipper and its automatic charging - Google Patents

Abstract

PURPOSE:To produce an erected bag with a zipper which contains much contents, hastens a charging speed and provides an excellent durability and good appearance, by forming a reverse V-shaped folded part on the bottom, attaching a zipper at the opening to produce an erected bag and by performing an automatic charge. CONSTITUTION:A film body 2 wound off from a roll 1 is hole-punched 4 at symmetrical positions on the right and left sides of the center line thereof. Next, the center line is folded to be a reverse V-shaped form and both sides are pulled to form two-folded front 2a, back 2b, and bottom 2c. Next, it is transferred horizontally and applied with side-seal 7 from the lower end to a certain height. Next, hole-punches 9 are applied in the upper part of this side-seal 7. And the center of the side seal 7 is side-cut 11 up to the hole-punches 9. Next, the opening is opened by a sucker 12 to change the contents. In this opening, a couple of zipper tape M combined with a male and a female are horizontally inserted. And then, a top-seal 16 is done together with a seal of the zipper tape 14. Next, the upper part of the side seal 7 is closely sealed up to the upper end. And then, the extended line of side cut 11 is cut up to the upper end to separate from each other.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the production of an upright bag (self-standing bag) having an inverted V-shaped folded part on the bottom and a zipper attached to the opening side, and a method therefor. This invention relates to an automatic filling method.

[Conventional technology]

In the conventional manufacturing of upright bags with zippers and automatic filling methods, a zipper is first inserted into the opening of the main body film.
Insert the tape and seal it, place this zipper tape side down and fill the contents from the bottom side with the opening at the top (known example 1), or - first attach the zipper tape inside the mouth. In a bag sealed on three sides, a method is used in which the zipper is forcibly opened, the contents are filled, the zipper is then closed, and the upper part is top-sealed (Known Example 2). After that, an inverted V-shaped folding tape is inserted and the bottom of the bag is sealed and closed.

[Issues required of conventional technology] Therefore, the following problems arise.

a. In the case of Known Example 1, during automatic filling, the bottom side, which serves as the filling opening, opens wide, but the zipper tape side is sealed flat, so the cross section of the bag becomes exactly V-shaped. For this reason, a large amount of contents cannot be contained.

b. The bottom side is narrow, so if you increase the filling speed, the contents will scatter or bounce back. For this reason, the filling speed must be slowed down, resulting in poor productivity.

Since the C0 filling opening side (bottom side) is sealed after the contents are filled, the main body film is deformed in a complicated manner, and since folding and bottom sealing are performed in this state, pinholes etc. occur in this sealing part. It is easy to wrinkle and wrinkles remain, which does not look good.

d. In the case of known example 2, since the zippered bags are filled one by one after being made, it is necessary to forcibly open the zipper using mechanical force and then close it again after filling. . This often damages the zipper, impairing its performance (sealability) and durability.

SUMMARY OF THE INVENTION An object of the present invention is to provide an upright bag with a zipper that can hold a large amount of contents, can increase the filling speed, is durable, and has a good appearance, and an automatic filling method therefor.

[Means to solve the problem]

The configuration of the present invention proposed to solve the problems is as follows.

In the above moving process, an inverted V-shaped fold is formed at the bottom and the packaging body film with the top open is moved horizontally. Perform sealing. In the middle of the above side rule, perform a side cut within the range from the bottom end to the top end of the side seal. Open the upper part of the section divided by the above side seal and fill the contents from here. , Insert the engaged zipper horizontally into the opening of the main body film filled with the above contents, and then remove the second zipper.
Seal each on the inside of the packaging body film, and horizontally top-seal the upper end opening of the packaging body film. Seal all the unsealed portions remaining above the side seals to match the side seals. In addition, there is a process for manufacturing upright bags with zippers and an automatic filling method for the same, starting from the process of cutting along the extension line of the side cut to separate the bags into individual bags.

The bottom of the packaging body film may be formed by folding the middle of one film into a W shape, or it may be formed by two films, front and back, and a V-shaped folding tape inserted at the bottom edge. may be configured.

Next, when making a side cut, a hole haunch is formed at the upper end of the hole punch, and when making a round cut with this hole punch, by matching the cut position, the cut misalignment is absorbed and no burrs remain. It is possible to prevent problems such as bags being connected and not being separated.

〔Example〕

FIG. 1 shows an automatic bag making and filling machine embodying the present invention.

The main film 2 sent out from the roll 1 is punched by a hole punching machine 3 at symmetrical positions on the left and right sides of the center line of the main film 2.
Hole punch 4 is performed.

This hole-punched main body film 2 is folded by a folding machine 5 into an inverted V-shape along the center line, and both sides are pulled together to form a front side 2a, a back side 2b, and a bottom 2 fold.
c is formed.

Next, the main body film 2 is moved in the horizontal direction, and side sealing 7 is performed by the first side sealer 6 to a certain height from the lower end.

Next, a hole punch 9 is punched in the upper part of this side seal 7 by a hole punching machine 8.

Next, the center of the side seal 7 is cut 11 by a first side cutting machine 10 to the hole punch 9.
be done. This situation is illustrated in Figure 2.3.4.

Next, the opening of the main body film 2 which has been subjected to side seals 7 and side cuts 11 is opened by a suction cup 12, and a hopper 13 approaches the unit and is filled with the contents.

This situation is illustrated in Figure 5.6.

Next, the zipper tape 14 with the male and female parts interlocked is inserted horizontally into the opening of the main body film 2 filled with the contents (FIG. 7), and then the top seal 16 and the zipper tape are inserted through the top seal 15. - the sealing of the tape 14 takes place at the same time (FIG. 8);

Next, the second side sealer 17 seals the upper side of the side seal 7 to the upper end (arrow a portion in FIG. 9). Next, the second side cutting machine 18 cants along the extension line of the side cut 11 to the upper end and cuts it off (the part indicated by the arrow in FIG. 9).

The appearance of the filled upright bag manufactured in this way is as follows:
As shown in the figure. FIG. 11 shows an embodiment in which the front film 2a and the back film 2b are sealed with a hole punch 4 to prevent the bottom 2c from opening.

[Effects of the present invention]

Since the present invention manufactures a zippered upright bag and fills it with the contents by the method described above, the following effects can be expected.

a. Located at the bottom or bottom of the bag with a zipper.
When the opening side is located on top and the mouth of the bag is opened with a suction cup,
Since the bottom side (lower half) of the bag has already been side-cut, the bag opens smoothly into a cylindrical shape and is no longer V-shaped in cross section as in the past.

As a result, the internal space of the bag becomes larger, allowing more contents to be filled, and even if the filling speed is increased, there is no scattering or splashing due to the large space.

b. Due to the effect of the side cut, the shape of each bag after filling with contents is free, and so-called bulges do not occur during top sealing, so the top seal and zipper tape are completely sealed. be able to.

As a result, no pinholes occur or wrinkles remain on the bag.

During C1 automatic filling, the zipper is never opened in the occluded state, so it will not be damaged as in the conventional case. Therefore, it is possible to obtain a zipper material with excellent sealing performance and durability.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the production of a zippered upright bag according to the present invention and an automatic filling machine therefor, Fig. 2 is an explanatory diagram of side seals and cuts, and Fig. 3 is a cross-sectional view taken along the line A-A'. Fourth
The figure is a sectional view taken along the line B-B', and Figure 5.6 is an explanatory diagram at the time of filling.
Figure 7 is an explanatory diagram of the state in which the zipper tape is inserted, Figure 8
The figure shows the state with the top seal and zipper tape sealed. Figure 9 shows the top seal and the bag is cut out. Figure 10 shows the zipper with the contents filled. A perspective view of the bag, FIG. 11 is a perspective view of the portion indicated by arrow C in FIG. 10. 1-- Roll 2- Main body film 3- Hole punching machine 4- Hole punch 5- Folding 6- First side sealer 7- Side seal
8 - Hole punching machine 9 - Hole punch 10 - First side cutting machine 11 - Side cut 12 - Suction cup 13 - Hopper 14 - Zimper tape 15 -
・Tomp sealer - 16 -) Tube seal 17 - 2nd side sealer 18 - - 2nd side cutting machine Patent Applicant Japan Patent Management Co., Ltd. Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 10 ＼ (C)

Claims (1)

[Scope of Claims] 1. In the above-mentioned movement process, in which an inverted V-shaped fold is formed at the bottom and the upper part is opened, the main body film is moved horizontally, from the lower part of the main body film to the upper part. Perform a side seal leaving an unsealed part on the side. In the middle of the above side rule, perform a side cut in a range that does not reach the bottom end of the side seal. Open the top of the section divided by the above side seal. Fill the contents from here. Insert the interlocked zipper tape horizontally into the opening of the package body film filled with the above contents, and seal each zipper tape inside the package body film. Top-seal the upper opening of the main body film in the horizontal direction. Seal all the unsealed portions remaining above the side seals in line with the side seals. Manufacturing of upright bags with zippers, which consists of the process of cutting and separating bags into individual bags, and an automatic filling method for the same. 2. The manufacturing method of a zippered bag and the automatic filling method thereof according to claim 1, wherein the packaging body film has a structure in which the middle of one film is folded in a W shape to form a bottom. 3. Manufacturing and automatic filling of the zippered upright bag according to claim 1, wherein the packaging body film is composed of two films, front and back, and an inverted V-shaped feeding tape inserted at the lower end. Method. 4. When making a side cut, form a hole punch at the top edge of the side cut, and when making the remaining cuts, align the cut positions with the hole punch to absorb cut misalignment and avoid leaving burrs or bags. 2. A method for producing an upright bag with a zipper and an automatic filling method therefor according to claim 1, which eliminates the problem of the bag being connected and not separating.