JPH06206268A - Manufacture of hooked packaging bag - Google Patents

Abstract

PURPOSE:To enable a bag with a hook to be manufactured readily, Inexpensively, and abundantly by fusing the end part of a laminated sheet on the upper end of the bag, and separating the end part from the laminated sheet, and thereafter punching out the end part into a desired shape for forming as a hook. CONSTITUTION:In manufacturing, at first, a synthetic resin bag body 1 mounted on a conveyer is transported at one pitch movement, and the sealed upper end part A is situated at a predetermined position. Next, a hook sheet 2 is delivered by forwarding roller 3, and the end part B is placed on the upper end part A of the bag body 1. Subsequently, by driving an air cylinder 6, the upper end part A of the bag body 1 and the end part B of the hook sheet 2 are fused by means of a heat sealing blades 4. At the same time, by driving another air cylinder 6', the hook sheet 2 is cut by means of a cutting blade 5 so that a hook 7 is formed on the upper end A of the bag body 1. Following this, the bag body 1 is transported to a heat punching out position and thus the hook 7 is formed into a desired shape-punched out part 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag with a hanging tool and a method for manufacturing the same. In particular, the present invention relates to a continuous manufacturing method suitable for mass production of a package with a hanging tool, which is made of paper having a rigid hanging part and is easy to hold.

[0002]

2. Description of the Related Art The present inventor has proposed in Japanese Patent Publication No. 4-51345 a method for continuously producing a package with a hanging tool.
In this case, since the hanging part to be attached is a thermoplastic resin sheet, it has a weak waist, and there is a drawback that the hanging part is deformed when the hanging part is hung and held or displayed. In particular, as shown in FIG. 5, when the shape of the suspending tool is a hook shape, there is a possibility that the upper curved portion of the hook may bend and it may not be possible to suspend it.

[0003]

SUMMARY OF THE INVENTION According to the present invention, there is provided a packaging bag body with a suspending tool, which has a proper hardness for the suspending tool and can be safely suspended even if the shape of the suspending tool is a hook shape. It is intended to provide a manufacturing method.

[0004]

The inventors of the present invention have found that the conventional thermoplastic resin sheet for hanging equipment cannot increase the rigidity of the hanging equipment even if the thickness of the resin sheet is increased. If the thickness becomes thick, the process of fusing with the bag becomes difficult. Therefore, the stiffness of the hanging part is achieved by a rigid cardboard, and the disadvantage that it is not fused to the bag because it is paper is compensated by the thermoplastic resin film bonded and laminated to the paper. Focusing on that, by using a laminated body of a long paper and a thermoplastic resin film as a material for the hanging device,
The present invention has been completed.

That is, the present invention comprises the inventions of the following items. (1) A plurality of thermoplastic resin film bags are placed on a conveyer and conveyed in a one-pitch motion to a hanging device attaching step, and thick paper and thermoplastic resin are conveyed in a direction perpendicular to the flow of the conveyer. By abutting the end portion of the long laminated sheet with the film, the thermoplastic resin film surface of the end portion of the laminated sheet is laminated toward the upper edge of the bag body,
The end part is thermocompression-bonded to the upper edge of the bag body to be fused, and then the end part is separated from the laminated sheet, and the end part is punched into a desired shape to form a suspending device continuously. A method for manufacturing a packaging bag with a hanging tool, which is characterized by repeating the above. (2) The method for producing a packaging bag body according to claim 1, wherein the thermoplastic resin film bag body conveyed to the hanging device attaching step is a packaging bag body that stores articles in the automatic filling and packaging step. (3) A continuous bag band made of a thermoplastic resin film is conveyed to the hanger attachment process in a one-pitch motion, and the length of the thick paper and the thermoplastic resin film is lengthwise from the direction perpendicular to the flow of the continuous band. By sticking the end portions of the length-wise laminated sheet, the thermoplastic resin film surface of the end portion of the laminated sheet is overlapped toward the upper edge of the bag body, and the end portion is thermocompression-bonded to the upper edge of the bag body. Fusing, then separating the end portion from the laminated sheet, punching the end portion into a desired shape to form a suspending tool, and then continuously repeating the step of fusing the side edge of the bag body. A method of manufacturing a packaging bag body with a hanging tool. (4) The method for producing a packaging bag according to 1, 2, or 3, wherein the thermoplastic resin film for bags and the thermoplastic resin film for laminated sheets are films made of the same type of resin. (5) A long laminated sheet of thick paper and a thermoplastic resin film is abutted against the upper edge of a bag made of the same kind of thermoplastic resin film, and both thermoplastic resin films are fusion-bonded to each other, and then a long laminated sheet is formed. A hanging bag-equipped packaging bag, characterized in that a fusion-bonded end portion of a sheet is cut and the end portion is punched out into a desired hanging tool shape.

The thermoplastic resin film used in the bag of the present invention can be used without particular limitation as long as it is a thermoplastic resin film. For example, polyethylene, polypropylene, polyolefin such as poly-4-methylpentene-1, resin films of polyvinyl chloride, polyester, polyamide and the like, and laminate films thereof can be used particularly preferably. These film resins include various commonly used additives such as antioxidants,
A heat stabilizer, an ultraviolet absorber, a plasticizer, an antistatic agent, an antiblocking agent, etc. can be added. The packaging bag used in the present invention is mainly stored in each bag without a suspending device by an automatic filling process, and then each bag is placed on a conveyor by a one-pitch motion on the suspending tool mounting base. In the mode of carrying and in the form of a continuous bag band of semi-finished products in which the bag body is not separated, it is sequentially moved to the mounting base in one pitch motion, the hanging tool is attached by thermocompression bonding, and then the side edge fusing process of the bag body There is a mode in which each bag is separated by performing. The automatic filling process used in the present invention is a known filling process, for example, a horizontal pillow system, a vertical pillow system or any other method in which an article is filled between two thermoplastic resin films and heat-sealed automatically. Can be used. In such an automatic filling process, the side edge and the upper edge are heat-sealed while the article is stored in the long-length folded thermoplastic resin film, or the opening of the already formed bag body is blown with air. Since it is done by the method of opening it and dropping the item into the bag,
Whatever the automatic filling method, if the suspending tool is fixed to the bag before the automatic filling process, the automatic filling will be hindered.
According to the present invention, it is possible to attach a stiff suspension tool having a strong rigidity after automatic filling. As the articles to be filled, various small articles having a certain shape, pamphlets, powders, liquids and the like that can be automatically filled regardless of tangible and intangible articles can be used without limitation.

The laminated film of long paper and thermoplastic resin film used in the present invention uses a laminated sheet in which a resin film is bonded and laminated on one or both sides of a rigid and thick thick paper sheet with an adhesive. can do. The thick paper sheet used here is a so-called cardboard, which is a strong paper, and a stiffer paper is more preferable. By using a stiff paper, it is possible to make a hanging tool having a hardness almost equal to that of a plastic molded product used for a conventional hook-shaped hanging tool. The thermoplastic resin film to be laminated on the laminated sheet of the present invention is preferably the same kind as the thermoplastic film used for the bag because it can be firmly bonded in the step of thermocompression bonding the both. In the automatic packaging process, the wrapped packaging bags are placed on the conveyor one after another, and by the method of the present invention, by attaching the suspending device continuously thereto, a packaging bag with a suspending device is obtained. It is possible to continuously and automatically manufacture from the automatic filling and packaging of to the packaging bag. In the present invention, when the bag body before storing the product is used, a continuous bag body belt sheet of a bag body in which a large number of bag bodies are continuous can be used. In the case of using the continuous bag band sheet, the long laminated sheets are abutted against each other in a T-shape against the flow of the continuous bag band, and they are moved vertically to each other in a one-pitch motion to the hanger attachment worktable. Then, the end of the long laminated sheet is fused to the upper edge of the bag band, cut and separated from the long laminated sheet, and the hanging tool is punched into a desired shape to attach the hanging tool, and then the bag. The side edges of the body band can be fused and separated into the respective packaging bag bodies. In this case, the one-pitch movement of the continuous bag band can be accurately moved by detecting the bag print mark with the photoelectric tube. On the other hand, the laminated sheet for the suspending device can be moved to the suspending device mounting base by a similar photoelectric tube or a constant pitch movement.

When the manufacturing method of the present invention is applied to individually separated packaging bags, they are individually placed at a fixed position on the conveyor, and a similar hanging tool attachment operation is performed on the upper edge of each bag. Can be carried out. In this case, each bag body is provided with a partition on the conveyor, and can be set so that the specific upper edge of the bag body comes to the position of the upper edge of the conveyor flow by inclining the conveyor diagonally, By abutting the laminated sheets, the width and position of overlapping with the upper edge can be made constant. In addition, the stroke of the protruding pitch of the laminated sheet can be adjusted by photoelectrically or mechanically detecting the upper edge of the bag. In the present invention, in the hanger attachment base, about 1 to 3 cm of the end portion of the long laminated sheet is overlapped with the thermoplastic resin film surface on the upper edge of the bag body and thermocompression-bonded to fix the same. Thermocompression bonding can be performed by using an ordinary hot iron to heat-seal and strongly bond to the thermoplastic resin film surface of the laminated sheet for hanging device by ultrasonic or high-frequency heat fusion from the upper edge of the bag film. . After thermocompression bonding, the end of the laminated sheet is cut and a rectangular cut end sheet having a shape as shown in FIG. 3 is attached to the upper edge of the bag body.
This end is stamped into the desired shape to form a hanger. In the present invention, it is desirable that the processes of butting the laminated sheets, thermocompression bonding, cutting the ends of the laminated sheets, and punching the suspending tool shape are performed on the suspending tool mounting base, because the punching shape becomes constant. The shape of the hanging tool can be a hook shape when forming a hanging hole as shown in FIG. 4 and as shown in FIG. In the hanging tool for a laminated sheet of paper according to the present invention, the hanging tool does not deform even in the hook shape as shown in FIG. The hook shape as shown in FIG. 5 is convenient for display because it can be hung by hanging on a hanging bar in a product display.

[0009]

The present invention will be described in more detail with reference to the drawings of the embodiments. 1 and 2 are a vertical side view and a lateral side view, respectively, of an example of an apparatus for carrying out the method of the present invention, in which reference numeral 1 is a bag body, 2 is a sheet for hanging equipment, and 3 is A feed roll for feeding the laminated sheet 2 for hanging equipment to the front, 4 is an upper end portion A of the bag body 1 and an end portion B of the sheet 2 for hanging equipment.
And 5 are cutting blades for cutting the sheet 2 for hanging equipment, and 6 and 6 ′ are air cylinders for vertically moving the heat sealing blades 4 and 5, respectively. is there. Reference numeral 9 is a roll for stabilizing the feeding of the hanging device sheet 2. First, the synthetic resin bag body 1 placed on the conveyor has its sealed upper end portion A.
Is transported in a one-pitch motion so that is positioned at the suspension attachment attachment part. The interval of the feeding pitch can be appropriately selected depending on the size of the bag or the partition interval of the conveyor. Next, the suspending tool sheet 2 is sent out to the front by the sending roll 3 so that the end B thereof is superposed on the substantially central portion of the upper end A of the bag body 1, and then the air cylinder 6 is driven to heat it. End portion B of the hanging tool seal 2 by the sealing blade 4
And the upper end portion A of the bag body 1 are heat-welded, and at the same time, the air cylinder 6'is driven to cut the hanging device sheet 2 by the thermal or mechanical cutting blade 5, as shown in FIG. ,
A suspending tool 7 having a desired width and shape is provided on the upper end portion of the bag body 1. FIG. 3 is a schematic plan view showing a state where the hanging tool 7 is provided on the upper end portion A of the bag body 1. Then in this way,
The bag body 1 provided with the suspending tool 7 is moved to a thermal punching position by one pitch motion, and the suspending tool 7 is punched into a desired shape by a mechanical punching method using a Thomson blade. As shown in FIG. 5, at the upper end portion A of the bag body 1,
There is provided a suspending tool including a suspending tool having a punched portion 8 having a desired shape. 4 and 5 are schematic plan views showing a state in which the suspending tool is provided on the upper end portion A of the bag body 1. In this way, as shown in the cross-sectional view of FIG. 6, it is possible to manufacture a paper hanging device in which the same type of resin film is firmly fusion-bonded. Further, in the present invention, in the cutting step by the stroke of the cylinder 6 ′, it is desirable that the punching blade of the hanging tool 7 is also operated at the same time to punch the hanging tool 7 in one step.

[0010]

According to the method of the present invention, a convenient and durable suspending tool can be continuously used at a low cost when storing and carrying an article in a synthetic resin bag and displaying it without requiring manual work. Therefore, the method of the present invention can be said to be an industrially valuable method suitable for mass production. In addition, the method of attaching the hanging device to the bag body filled with the article of the present invention can achieve labor saving by continuous automation consistently from automatic filling packaging to attaching the hanging device.

[Brief description of drawings]

FIG. 1 is an illustration of an apparatus 1 for carrying out the method of the invention.
It is a vertical side of an example.

FIG. 2 shows one of the devices for carrying out the method according to the invention.
It is a side view of an example.

FIG. 3 is a schematic plan view showing a state in which a suspending tool is provided on the upper end portion of the bag body.

FIG. 4 is a schematic plan view showing a state in which a bag is provided with a hanging tool by the method of the present invention.

FIG. 5 is a schematic plan view showing a state in which a hanger is provided on a bag by the method of the present invention.

FIG. 6 is a vertical cross-sectional view showing a state in which a hanging tool is provided on a bag according to the method of the present invention.

[Explanation of symbols]

 1 Bag 2 Suspension Sheet 3 Feed Roll 4 Heat Seal Blade 5 Cutting Blade 7 Suspension Tool 8 Punching Area 9 Roll A Upper Edge of Bag B Edge of Suspension Seat C Thick Cardboard Layer D Thermoplastic resin layer

Claims (5)

[Claims] 1. A plurality of thermoplastic resin film bags are placed on a conveyer and conveyed in a one-pitch motion to a hanger attachment process so that thick paper and heat can be applied from a direction perpendicular to the flow of the conveyer. By abutting the end portions of the long laminated sheet with the thermoplastic resin film, the thermoplastic resin film surface of the end portions of the laminated sheet is overlapped with the upper edge of the bag body, and the end portion is placed on the bag body. A hanging process characterized in that a step of forming a suspending tool by thermocompression-bonding to an edge to fuse and then separating the end part from the laminated sheet and punching the end part into a desired shape is continuously repeated. A method for manufacturing a packaging bag with lower articles. 2. The method for producing a packaging bag body according to claim 1, wherein the thermoplastic resin film bag body conveyed to the hanger attachment step is a packaging bag body that stores articles in the automatic filling and packaging step. 3. A continuous bag band made of a thermoplastic resin film is conveyed to the hanging device attaching step by a one-pitch motion, and a thick paper and a thermoplastic resin film are fed from a direction perpendicular to the flow of the continuous band. By abutting the end portions of the long laminated sheet, the thermoplastic resin film surface of the end portions of the laminated sheet is superposed toward the upper edge of the bag body, and the terminal portion is thermocompression bonded to the upper edge of the bag body. And fusing, then, separating the end portion from the laminated sheet, punching the end portion into a desired shape to form a suspending tool, and then repeating the step of fusing the side edge of the bag body. A method of manufacturing a packaging bag body with a hanging tool, comprising: 4. The method for producing a packaging bag according to claim 1, 2 or 3, wherein the bag thermoplastic resin film and the laminated sheet thermoplastic resin film are films made of the same type of resin. 5. A long laminated sheet of thick paper and a thermoplastic resin film is abutted on the upper edge of a thermoplastic resin film bag of the same kind, and both thermoplastic resin films are fusion bonded and A hanging bag-equipped packaging bag characterized in that the fusion-bonded end portion of the shaku laminated sheet is cut and the end portion is punched out into a desired hanging tool shape.