JP2022062801A - Continuous type packaging bag and its manufacturing method - Google Patents

Abstract

To easily form a configuration for easily opening during conveyance at manufacturing in a continuous type packaging bag hard to open because films tightly adhere to each other, and to eliminate generation of wastes in a manufacturing process.SOLUTION: In a continuous type packaging bag 11 in which a plurality of packaging bags 12 continue via perforations 13 for separating and are wound in a roll shape, an opening end 17 comprising the perforation 13 broken by applying a load in a direction breaking the perforation at an end is formed at a part of the longitudinal direction in the perforation 13 in a roll inner surface of the packaging bag 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a continuous type packaging bag in which a plurality of packaging bags are separably continuous.

The continuous packaging bag is continuously rolled into a roll through perforations for separation. When using the packaging bag, it is necessary to open the mouth after separating the packaging bag, but since the mouth is a part connected by perforations, it is difficult to open even after cutting. For example, the thinner the synthetic resin film constituting the packaging bag, the more difficult it is to open, such as the so-called roll plastic bag provided on a bagger.

The packaging bag of Patent Document 1 below is wrinkled by applying heat to the opening. Wrinkles make it easier to open.

The packaging bag of Patent Document 2 below has an embossed portion having an uneven shape formed in the opening. The embossed portion is obtained by cold compression processing.

With these configurations, although it is easy to open the package, it takes time for wrinkling and forming an embossed portion in the production, and the continuous packaging bag cannot be efficiently produced.

The packaging bag of Patent Document 3 below has a protrusion formed in a triangular shape toward the bottom seal at the middle portion in the longitudinal direction of the perforation. It is said that this packaging bag is easy to open because there is a protrusion at the opening portion when it is separated.

However, the yield is poor because an appropriate distance must be placed between the perforation and the bottom seal to form the protrusion.

The packaging bag of Patent Document 4 below has a round opening assisting through hole formed in the vicinity of the opening. When opening, pinch the opening auxiliary through hole with your fingers and move it.

However, forming such a penetrating hole means that dust is generated during manufacturing.

Special Publication No. 53-23748 Japanese Unexamined Patent Publication No. 2008-13203 Japanese Patent No. 3743890 Japanese Unexamined Patent Publication No. 2000-255590

Therefore, it is a main object of the present invention to be able to smoothly form a structure for facilitating opening in the transport process during manufacturing and to eliminate the generation of dust in the manufacturing process.

The means for this is a continuous type packaging bag in which a plurality of packaging bags are continuously rolled in a roll shape through perforations for separation, and a part of the packaging bag in the longitudinal direction at the perforations on one side. In addition, it is a continuous type packaging bag in which an opening opening having a broken perforation at the end is formed.

In this configuration, the opening opening is like a perforation with wide eye spacing, and the packaging bag is in a state of being loosened from the other surface. When separating the packaging bag at the perforation, if you hold the opening opening with your fingertip and pull it, you can open it at the same time as separating it.

According to the present invention, since the opening opening is provided, the opening is easy, and the storage work of products and the like can be performed easily and quickly. Since the opening opening is obtained by breaking the perforation, it can be easily formed during the transport process during manufacturing. Moreover, since it is only necessary to break the perforations to form the opening opening, it is possible to prevent the generation of dust in the manufacturing process.

Partially broken perspective view of continuous packaging bag. The schematic block diagram of the manufacturing process of a continuous type packaging bag. FIG. 3 is a cross-sectional view showing a method of forming an opening opening. The perspective view which shows the use state. The perspective view which shows the continuous type packaging bag and its use state which concerns on another example.

An embodiment for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 shows a partially broken perspective view of the continuous type packaging bag 11 in a slightly pulled out state. The continuous packaging bag 11 is a plurality of packaging bags 12 that are continuously rolled into a roll through perforations 13 for separation, and are used by being held in a drawerable manner or housed in a box. To.

The material of the continuous type packaging bag 11 is a synthetic resin such as polyethylene, and the continuous type packaging bag 11 is formed in the form of a thin film. The packaging bag 12 is a so-called bottom-seal type bag, in which only the bottom is sealed. That is, in the packaging bag 12, a perforation 13 that is an opening of the packaging bag 12 and a bottom seal 14 that is the bottom of the packaging bag 12 are formed in parallel on a flat tube. The perforations 13 and the bottom seal 14 are formed linearly over the entire width of the tube. The perforation 13 penetrates in the thickness direction of the packaging bag 12.

The packaging bags 12 are all continuous in the same posture, and the bottom of the packaging bag 12 is directed to the pull-out direction D1. That is, for one packaging bag 12, the perforation 13 that is the opening of the packaging bag 12 is arranged in front of the winding direction D2, and the bottom seal 14 that is the bottom of the packaging bag 12 is arranged behind the winding direction D2. The space between the bottom seal 14 of the adjacent packaging bag 12 and the perforation 13 is a portion of the packaging bag 12 which is a so-called skirt 15, and the length thereof is appropriately set, but the shorter the portion, the better the yield.

Further, the packaging bag 12 has a horizontal gusset, and has gussets 16 that are folded inward on both the left and right sides.

The packaging bag 12 in such a continuous packaging bag 11 has an opening opening 17 having a broken perforation at a part of the perforation 13 on one side in the longitudinal direction. The opening opening 17 is a portion of the films in contact with each other in a state in which the film on one side is in close contact with the film on the other side. In the opening opening 17, a free end is formed by breaking a part of the perforation 13 in the longitudinal direction, and the appearance is such that it floats from the fill on the other surface or has wrinkles.

As described above, since the bottom of the packaging bag 12 of the continuous packaging bag 11 is oriented toward the pull-out direction D1, the opening opening 17 is formed on the portion of the perforation 13 on the pull-out direction D1 side. ..

The opening opening 17 is formed at an intermediate position in the longitudinal direction of the perforation 13. The range of the opening opening 17 can be set as appropriate, but it is preferably inside the left and right gussets 16.

In this example, the opening opening 17 is formed at the perforations 13 located on the inner surface of the roll, so that the opening opening 17 can be accommodated inside without being exposed to the outer surface in the rolled state. Become.

The continuous packaging bag 11 having such a configuration is manufactured as shown in FIG.

While transporting the tube 11a with a gusset in its longitudinal direction, welding is performed to form the bottom seal 14 at predetermined intervals, and perforations are formed to form the perforations 13. In FIG. 2, 21 is a welding machine, 21a is a pedestal thereof, and 21b is a seal bar provided so as to be movable up and down. Reference numeral 22 is a perforation forming machine, 22a is a pedestal thereof, and 22b is a perforation forming blade provided so as to be movable up and down.

After forming the perforations 13 and the bottom seal 14, a load is applied to the perforations 13 portion on one side of the packaging bag 12 in the direction of breaking the perforations 13 to break a part of the perforations 13 in the longitudinal direction. An opening opening 17 having a broken perforation 13 at the end is formed. After forming the opening opening 17, the completed continuous packaging bag 11 is wound into a roll. In FIG. 2, 23 is a take-up shaft.

The partial breakage of the perforation 13 can be performed with various configurations, but for example, the following configuration is preferable.

That is, the perforation breaking machine 24 is composed of a feed roller 24a that moves the tube 11a under the tube 11a in the transport direction and a contact roller 24b that reciprocates on the tube 11a toward the feed roller 24a. The feed roller 24a is formed longer than the width of the tube 11a, but the contact roller 24b is shorter than that and is formed according to the desired size of the opening opening 17. Further, the feed roller 24a is set to rotate in the transport direction, while the contact roller 24b is set to rotate in the opposite direction. The contact roller 24b is made of a material having high frictional resistance with respect to the tube 11a, such as silicone rubber.

The mechanism for the reciprocating movement of the contact roller 24b is composed of an appropriate mechanism for converting the rotational movement of the motor into a linear movement by, for example, a cam or a crank mechanism.

During the transfer of the tube 11a, as shown by the solid line in FIG. 3, the feed roller 24a and the contact roller 24b are both rotating. When the bottom seal 14 of the portion to be one packaging bag 12 and the perforation 13 to be another packaging bag 12 following it pass over the feed roller 24a, the contact roller 24b is lowered to the tube 11a. The perforation 13 is brought into contact with the rear side in the transport direction.

Due to the contact of the contact roller 24b and the rotation of the contact roller 24b in the direction opposite to the transport direction, a load is applied to the perforation 13 portion of the tube 11a being transported, and the perforation 13 is broken. Due to the breakage of the perforation 13 and the rotation of the contact roller 24b, the portion of the perforation 13 on the rear side in the transport direction becomes wrinkled as shown by the virtual line, and is in close contact with the facing film. There is a gap between them. The contact roller 24b once lowered is immediately raised.

An opening opening 17 is formed in a part of the perforations 13 formed one after another by such an intermittent operation of the contact roller 24b.

When the perforation 13 is broken, the bottom seal 14 is formed immediately next to the winding direction D2 of the perforation 13 and upstream of the contact roller 24b in the rotation direction, so that a load for breaking is applied. The elongation of the film in the above can be suppressed, and the perforation 13 is surely broken.

After that, when the winding is performed by the winding shaft 23, the opening opening 17 of the continuous packaging bag 11 fits on the inner surface of the roll, and the free end of the opening opening 17 is held. Even if the opening start 17 is provided, the gussets 16 on both the left and right sides enable firm winding at the time of winding.

The continuous packaging bag 11 manufactured as described above is used by being attached to an existing roll holder provided in a bagger or the like, or being retractably stored in a box.

FIG. 4 shows a state in which the continuous packaging bag 11 is pulled out downward. Although FIG. 4 shows a state in which the tip end portion of the continuous packaging bag 11 is simply hung down, when the continuous type packaging bag 11 is held in a general holder, the end portion drawn out from the roll is positioned on the front side.

When the continuous packaging bag 11 pulled out with the bottom seal 14 at the front is pulled out until the perforation 13 which is the upper end of the packaging bag 12 appears, the opening opening 17 is exposed in the middle of the perforation 13 in the longitudinal direction. The opening opening 17 is not in close contact with the facing film and is in a state of being easy to open. Therefore, when the opening opening 17 is pinched and the packaging bag 12 is pulled as shown by the virtual line, the perforation 13 is torn and the entire upper end is opened while the packaging bag 12 can be separated.

Since the separated packaging bag 12 is open, it is not necessary to open the mouth, and the work of putting a product or the like can be performed easily and quickly.

Since the opening opening 17 is formed at an intermediate position in the longitudinal direction of the perforation 13, the opening and separation can be stably performed as compared with the case where the opening end 17 is formed unevenly on either the left or right side.

Further, since the opening opening 17 is formed in the perforation 13 located on the inner surface of the roll, it is possible to prevent the opening opening 17 from being exposed in the wound state. Therefore, it is possible to prevent accidental tearing and to use it correctly without waste.

Since the packaging bags 12 are all in the same posture and the bottom of the packaging bag 12 is directed to the pull-out direction D1, the packaging bag 12 is in a state where the continuous packaging bag 11 is pulled out even if the opening opening 17 is provided. Does not open, and the sanitary state of the packaging bag 12 can be maintained.

Further, since the packaging bag 12 has a horizontal gusset, even if it has an opening opening 17, it can be wound firmly and tightly on both the left and right sides, so that the continuous packaging bag 11 has a good appearance and is easy to use.

In the production of the continuous packaging bag 11, it is only necessary to form the perforations 13 and the bottom seal 14 by the existing method and then break a part of the perforations 13, so that the configuration of the apparatus can be simplified and the conventional method can be simplified. Unlike the case of making holes as described above, it is possible to eliminate the generation of dust in the manufacturing process.

The above configuration is one embodiment for carrying out the present invention, and the present invention is not limited to the above-mentioned configuration, and other configurations may be adopted.

Hereinafter, the continuous packaging bag 11 according to another example will be described. In this description, the same configurations as those described above are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 5 is a perspective view of the continuous packaging bag 11 according to another example. As can be seen in this figure, the opening opening 17 is present on the outer surface of the roll. That is, the continuous packaging bag 11 of FIG. 5 has a structure in which the opening opening 17 is formed at the perforation 13 located on the outer surface of the roll. In the manufacturing process, the configuration is the same as described above except that the opening opening 17 is wound toward the outer surface of the roll.

In the continuous packaging bag 11 having such a configuration, even if the packaging bag 12 on the drawer tip side is in close contact with the roll due to static electricity, as shown by a virtual line in FIG. 5 when the packaging bag 12 is taken. If you move your finger along the outer surface of the roll, your fingertips will catch the opening opening 17. Therefore, the packaging bag 12 can be easily separated from the opening. Further, the opening and separation of the packaging bag 12 can be performed without pulling out the packaging bag 12 on the pull-out tip side by turning the roll.

In addition, although not shown, for example, the opening opening 17 may be formed by using a non-rotating configuration such as a hammer that intermittently operates in the direction of moving toward the feed roller 24a instead of the contact roller 24b.

Further, the packaging bag 12 may be in a form without a gusset 16 or in a side-seal type.

11 ... Continuous packaging bag 12 ... Packaging bag 13 ... Perforation 14 ... Bottom seal 16 ... Machi 17 ... Opening start D1 ... Pulling out direction D2 ... Winding direction

Claims (8)

A continuous type packaging bag in which a plurality of packaging bags are continuously rolled into a roll through perforations for separation.
A continuous packaging bag in which an opening opening having a broken perforation at an end is formed on a part of the perforation on one side of the packaging bag in the longitudinal direction. The continuous packaging bag according to claim 1, wherein the opening opening is formed at an intermediate position in the longitudinal direction of the perforation. The continuous packaging bag according to claim 1 or 2, wherein the opening opening is formed on the inner surface of the roll. The continuous packaging bag according to claim 1 or 2, wherein the opening opening is formed on the outer surface of the roll. All the packaging bags are in the same posture and
The continuous packaging bag according to any one of claims 1 to 4, wherein the bottom of the packaging bag is oriented in the drawer direction. The continuous packaging bag according to any one of claims 1 to 5, wherein the packaging bag has a horizontal gusset. A method for manufacturing a continuous packaging bag in which a plurality of packaging bags are continuously rolled into a roll through perforations for separation.
After forming the perforation and the bottom seal, a load in the direction of breaking the perforation is applied to the perforation portion on one side of the packaging bag to break a part of the perforation in the longitudinal direction and break. Forming an opening opening with the perforation at the end,
A method for manufacturing a continuous packaging bag that is then rolled up into a roll. The method for manufacturing a continuous packaging bag according to claim 7, wherein the perforation that is the opening of the packaging bag is arranged in the front in the winding direction, and the bottom seal that is the bottom of the packaging bag is arranged in the rear in the winding direction. ..

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