JP2836948B2 - Production of upright bags with zippers and automatic filling method for them - Google Patents

Description

The present invention relates to the manufacture of an upright bag (self-standing bag) in which an inverted V-shaped folded portion is formed at the bottom and a zipper is attached to the mouth side, and an automatic bag for this. It relates to a filling method.

[Conventional technology]

The conventional method of manufacturing an upright bag with a zipper and an automatic filling method for this is to insert a zipper tape in the mouth of the bag body film and seal it first, position the zipper tape side downward, and open the upper part. Filling the contents from the bottom side (known example 1) or once attaching the zipper tape in the mouth and sealing the three sides, forcibly open the zipper to fill the contents, then close the zipper,
Further, a method of top-sealing the upper portion is used (known example 2). Thereafter, an inverted V-shaped folding tape is inserted, and the bottom of the bag is sealed and closed.

[Issues required for conventional technology]

 Therefore, there are the following problems.

a. In the case of Known Example 1, at the time of automatic filling, the bottom side serving as the filling port is largely opened, but the zipper tape side is flatly sealed, so that the cross section of the bag becomes just V-shaped. For this reason, the amount of contents does not enter much.

b. When the filling speed is increased due to the narrow bottom side, the contents will scatter or bounce. For this reason, the filling speed must be reduced, and the productivity is poor.

c. The main body film is complicatedly deformed in order to seal the filling port side (bottom side) after the contents are filled, and folding and bottom sealing are performed in this state. It is easy to occur and wrinkles remain, and the appearance is not good.

d. In the case of Known Example 2, it is necessary to open the zipper by mechanical force once and then close it again after filling in order to fill each bag after the bag with the zipper is made. For this reason,
The zipper is often damaged, impairing the zipper's performance (sealability) and durability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upright bag with a zipper and a method for automatically filling the bag, which has a large amount of contents, can increase the filling speed, and has excellent durability and excellent appearance.

[Means for solving the problem]

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

Forming an inverted V-shaped fold at the bottom and horizontally moving the bag body film with the upper part opened. In the above moving process, the bag body film is directed upward from the lower part, and the side is left with an unsealed part at the upper part. Perform sealing, perform a side cut in the middle of performing the above-mentioned side rule in a range not reaching the upper end of the side seal from the lower end, open the upper part of the section defined by the side seal,
Fill the contents from here, In the opening of the bag body film filled with the contents,
Insert the zipper in the occluded state horizontally, seal these zippers inside the bag body film, and top seal the top opening of the bag body film in the horizontal direction. Unseal remaining above the side seal Sealing all parts according to the side seal, cutting the extension of the side cut according to the side cut, and dividing the bag into individual pieces. Starting from the process of manufacturing upright bags with zippers and automatically filling them.

The bag body film may be formed by folding the middle of one film into a W shape to form a bottom, or by using two films on the front and back and a V-shaped folding tape inserted at the lower end. You may comprise.

Next, when performing a side cut, a hole punch is formed at the upper end thereof, and by matching the cut position when performing the remaining cut with this hole punch, a cut gap is absorbed to prevent burrs, or a bag is not formed. It is possible to prevent problems such as connection and separation from occurring.

〔Example〕

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

The main body film 2 sent out from the roll 1 is hole-punched 4 by a hole punching machine 3 at a position symmetrical with respect to the center line of the main body film 2.

The center line of the main body film 2 on which the hole punch 4 has been formed is folded in an inverted V-shape by the folding machine 5 and both sides are drawn to form a folded front 2a, back 2b and bottom 2c.

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

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

Next, the center of the side seal 7 is cut 11 by the first side cutting machine 10 to the hole punch 9. This situation is shown in FIGS.

Next, the opening of the main film 2 having the side seal 7 and the side cut 11 is opened by the suction cup 12, and the hopper 13 approaches to the opening to fill the contents. This situation is the fifth and sixth
It is shown in the figure.

Next, a zipper tape 14 having male and female bite is inserted horizontally into the opening of the main body film 2 filled with the contents (FIG. 7), and then the top sealer 16 and the zipper tape 14 are Are performed simultaneously (FIG. 8).

Next, the second side sealer 17 seals the upper part of the side seal 7 to the upper end to seal the same (FIG. 9, arrow a). Next, the second side cutting machine 18 cuts the extension of the guide cut 11 to the upper end and separates it (arrow b in FIG. 9).

The appearance of the filled upright bag manufactured in this way is
As shown in the figure. FIG. 11 shows an embodiment in which the front film 2a and the back film 2b are sealed via the hole punch 4 so that the bottom 2c is not opened.

(Effect of the present invention)

According to the present invention, an upright bag with a zipper is manufactured by the above-described method and the contents are filled, so that the following effects can be expected.

a. The bottom side of the folded bag is located at the bottom, the mouth with the zipper is located at the top, and when the mouth of the bag is opened with the suction cup, the outside (lower half) side of the bag is already side cut. As a result, the bag opens smoothly in a cylindrical shape, and does not have a V-shaped cross section as in the related art.

As a result, the internal space of the bag becomes large, so that a large amount of contents can be filled, and even if the filling speed is increased, the space is large, so that there is no scattering or rebound.

b. Due to the effect of the side cut, the shape of the bag after filling the contents is free for each bag, so that so-called snapping does not occur at the time of top sealing, it is necessary to completely seal the top seal and zipper tape. Can be.

As a result, pinholes do not occur and wrinkles do not remain in the bag.

c. During automatic filling, the zipper does not open once in the engaged state, so there is no damage as before. Therefore, it is possible to obtain a zipper-equipped bag having excellent sealing properties and durability.

[Brief description of the drawings]

FIG. 1 is an explanatory view of the manufacture of an upright bag with a zipper embodying the present invention and an automatic filling machine for the same, FIG. 2 is an explanatory view of a side seal and a cut, FIG. 3 is a sectional view taken along line AA ′ of FIG. 4
The figure is a sectional view taken along the line BB ', FIGS. 5 and 6 are explanatory views at the time of filling,
FIG. 7 is an explanatory view showing a state where a zipper tape is inserted, and FIG.
Fig. 9 is an explanatory view showing a state in which a top seal and a zipper tape are sealed, Fig. 9 is an explanatory view showing a state in which the top side seal and each bag are cut, and Fig. 10 is an upright bag with a zipper filled with contents. FIG. 11 is a perspective view of an arrow c portion in FIG. 1 roll 2 bag 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… Sucker 13… Hopper, 14… Zipper tape 15… Top sealer, 16… Top seal 17… Second side sealer 18… … Second side cutting machine

Claims (4)

(57) [Claims] 1. An inverted V-shaped fold is formed at the bottom, and a bag body film having an open top is horizontally moved. In the moving process, the bag body film is directed upward from a lower portion and unsealed at an upper portion. Perform the side seal while leaving the part.In the middle of performing the side rule, perform a side cut within the range that does not reach the upper end of the side seal from the lower end.Open the upper part of the section defined by the side seal, from here The contents are filled. The zipper tape in a state of being occluded is horizontally inserted into the opening of the bag body film filled with the contents, and the zipper tapes are respectively sealed inside the bag body film and the bag body film is filled. Top seal the top opening in the horizontal direction, and seal all the unseal parts remaining above the side seals with the side seals. , In accordance with the side cut to pieces Classify the bag by cutting the extension direction of the side cut, automatic filling process for producing a stand-up pouch zipper and for this comprising the step. 2. The bag body film has a structure in which the middle of one film is folded into a W shape to form a bottom.
Production of the zippered bag described and an automatic filling method for the zippered bag. 3. The production and manufacture of an upright zipper-equipped bag according to claim 1, wherein the bag body film comprises two films, front and back, and an inverted V-shaped feeding tape inserted at a lower end. Automatic filling method. 4. When a side cut is made, a hole punch is formed at the upper end thereof, and when the remaining cut is made, the cut position is matched with the hole punch so that the cut gap is absorbed and no burrs remain. 2. The method for producing an upright zipper-equipped bag according to claim 1, wherein said method eliminates the problem that the bags are connected and cannot be separated.