JPS62261431A - Manufacture of cover with bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use The present invention relates to floppy desks and forms for computers, word processors, etc.

The present invention relates to a method for producing a cover with a bag for storing cards and other paper sheets (hereinafter referred to as floppy desks, etc.).

Prior art and problems [Publication No. 759-53174, Japanese Utility Model Publication No. 58-854
Publication No. 8 and the like discloses a method for producing a product by high-frequency welding a gusseted bag made of a plastic sheet to a cover that can be welded at 8 frequencies, and the existence of the above-mentioned cover having a gusseted bag made of the sheet. .

The conventional technical means disclosed in the former publication is to wrap a gusset-forming piece around a metal frame, sandwich the metal frame with the gusset-forming piece wrapped between two upper and lower Plus Decks 1, and apply a high-frequency voltage. This is a method of heat-sealing the gusset forming pieces to the upper and lower sheets by applying heat. When using this method, it is possible to provide a plurality of gusseted bags, but the workability is inferior, as described in the former publication.

In the former publication, in order to solve the problems seen in the above-mentioned conventional technical means, a gusset forming piece is placed on a base frame into which a metal frame can be detachably fitted, and then a gusset forming piece is placed on the base frame on the metal frame. We have proposed a processing method that facilitates wrapping by bending the gusset-forming piece. When using this processing method, the work of wrapping the gusset forming piece around the metal frame in the conventional technical means may be somewhat streamlined, but when trying to construct a large number of gusseted bags, the bag It is necessary to wrap the gusset forming pieces the same number of times as the number of times, so it is not necessarily an efficient processing method.

The latter publication has a cover with a well-known gusseted bag,
We have proposed a structure in which an opening is formed on the lower side of the gusset, and this structure allows the gusset to expand smoothly. Therefore, the processing method for obtaining the structure disclosed in this publication has the same problems as the former publication.

The present invention has been made by paying attention to the problems of the prior art described above, and is capable of efficiently high-frequency welding a large number of pre-configured bags at once, and then attaching the high-frequency welded large number of bags to a cover that can be high-frequency welded. By using frequency welding, the entire work can be performed efficiently as a series of assembly operations, and homogeneous products can be efficiently provided in large quantities.
The purpose is to propose a method.

Means for Solving the Problems In order to achieve the above object, the present invention arranges a large number of plastic sheet bags in surface contact with each other, and electrodes are arranged inside or outside the bags at both ends. A cover that can be electrically connected to a high-frequency power source and applied a high-frequency voltage to weld parts of the surface contact portions of each bag body to each other, and a wall on the opposite side to the mutually welded wall of the bag bodies at both ends can be high-frequency welded. We propose a technical means of high-frequency welding on one side of the

Effects of the Invention Since the present invention is comprised of the above-mentioned means, it is possible to weld and join a large number of plastic sheet bag bodies with one application of high-frequency voltage, thereby efficiently performing the most time-consuming processing step. At the same time, the mutual welds of each bag form a keloid-like shape? The wall may become extremely thin and tear easily (
It can be finished neatly without causing any damage. Moreover, since a large number of frequency-welded bags need only be high-frequency welded to one side of the high-frequency weldable cover using a conventional method, the work can be completed efficiently.

Therefore, regardless of whether the bag has a gusset or not, the entire work can be completed without requiring special skill.

Embodiments Examples of the present invention will be explained in the order of usable bags, high-frequency voltage application devices, usable covers, manufacturing methods, etc.

The numerous bags that can be used may be either well-known auxiliary material bags or well-known gusset-free bags, but either one is configured in advance. The bag body is formed of a plus deck sheet into an appropriate shape such as a rectangular or bicircular shape. High frequency voltage application W
Position A is a movable electrode (Φ
(pole and e-pole) and a high-frequency power source that electrically connects each of these electrodes. The flexible elf pole is configured to be movable in order to partially pressurize the wall of each bag to be welded when a high frequency voltage is applied. The usable cover may be any known cover that can be high-frequency welded. For example, a cardboard core with silver paper pasted on one side and wrapped in a plastic sheet, a cardboard core wrapped in a plastic sheet, a plastic plate, and a plastic plate covered with a plastic sheet. Various structures can be used, such as those joined together.

Next, the manufacturing method will be explained.

First example: A large number of bags (for example, 10 or less bags) were made without gusset, and movable electrodes (■ poles and ELFI) of a high-frequency voltage application device were placed inside the bags.

First, insert an insulating film (for example, cellophane, Teflon film, silicone cloth, empire cloth, or similar insulating film that does not have a dipole, and fill the bags) into a large number of bags. The bags are arranged with the walls of the body in surface contact with each other, and the bags without an insulating film are arranged in surface contact at both ends.

Along with the above bag arrangement step, appropriate frame-shaped movable electrodes (e-pole on one end of the bag, e-pole on the other end) are placed inside the bags at both ends, and electrically connected to a high-frequency power source. .

Following the high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing (squeezing) the mutually contacting walls of each bag with a movable electrode. The applied high frequency voltage passes through the dipole-free insulating film and welds the mutually contacting walls of each bag, joining each bag to each other and forming an accordion-like configuration.

Therefore, if the insulating film is used as described above, since the insulating film does not have a dipole, the film will not generate heat even when a high frequency voltage is passed through it, and both sides of each bag into which the film is inserted will be heated. No welding of walls.

Following the high-frequency voltage application step, the cover welding step begins; in this step, out of a large number of accordion-shaped bags, the bags at both ends are welded by high-frequency welding to one side of the cover, which can be high-frequency welded. Get the product.

Second example: Many bags are without gusset, but the number of bags used is greater than in the first example (for example, 10 or more bags were used). The high frequency voltage application device has a movable electrode and a fixed electrode, the movable electrode is arranged inside the bag at both ends, and the fixed electrode is
It was placed inside the bag in the center.

First, the walls of a large number of bags are brought into surface contact with each other and the bags are arranged, and the same insulating film as in the first example is inserted into the bags except for the bags at both ends and the center.

Along with this bag arrangement step, appropriate frame-shaped movable electrodes (both bags have e-poles) are placed inside the bags at both ends, and fixed electrodes (with the same frame shape as the movable electrodes) are placed inside the central bag. Φl4
i), and each electrode is electrically connected to a high frequency power source.

Following the high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing the mutually contacting walls of each bag body toward the fixed electrode side using a movable electrode. The principle of welding and joining each bag in this step is the same as that of the high frequency voltage application step of the first example.

Although the fixed electrode (e-electrode) disposed inside the bag at the center is not necessarily required, welding can be more uniform if it is disposed.

Following the high-frequency voltage application process, the same process as the cover welding process of the first example is performed to obtain a product.

Third example: A large number of bags are without gusset, and the number of bags used is even greater than in the above two examples.

The high-frequency voltage application device had a movable electrode and a metal frame, the movable electrodes were placed inside bags at both ends, and the metal frames were placed inside the other bags.

First, the bags are arranged by bringing the walls of a large number of bags into surface contact with each other.

Along with the bag arrangement step, appropriate frame-shaped movable electrodes (Φ pole for the bag at one end, e pole for the bag at the other end) are placed in the bags at both ends, and each bag other than the bag is A mold with the same frame shape as the movable electrode is placed inside the body and electrically connected to a high-frequency power source.

Following this high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing (squeezing) the mutually contacting walls of each bag with a flexible electrode. By arranging the metal frame, the high frequency voltage causes the mutually contacting walls of each bag to be welded, joining each bag to each other and forming an accordion-like configuration.

Following this high-frequency voltage application process, a cover welding process similar to the first example is performed to obtain a product.

Fourth example: A large number of bags (same number as in the first example) were made without gusset, and the movable electrodes (e-pole and e-pole) of the high-frequency voltage application device were arranged outside the bags.

Bag arrangement step: Insulating films similar to those in the first example are inserted into all the bags, and the walls of the bags are brought into surface contact with each other to arrange the bags.

In addition to the high-frequency voltage application Q preparation process and the two-bag arrangement process, appropriate frame-shaped movable electrodes (Φ electrodes are attached to the outer surface of the bag at one end) are attached to the outer surfaces of the bags at both ends (the outer surfaces of the walls opposite to the mutual contact walls of the bags). , e-pole) are arranged on the outer surface of the bag body at the other end and electrically connected to a high frequency power source.

High-frequency voltage application process: Same as the high-frequency voltage application process in the first example. The principle of welding and joining each bag is the same as in the first example.

Cover welding process: Same as the first example.

Even if a bag with a gusset is used in each of the above embodiments, it can be manufactured in exactly the same way.

Patent applicant Ishitsuka procedure? 1
Summer 1st Book August 5, 1986 Director-General of the Patent Office Black 1) Mr. Akio
−・su・(Patent Office Examiner
) 1. Indication of the case: 1988 Patent Application No. 106036 2.
Name of the invention Method for manufacturing loan covers 3, Relationship with the amended case Patent applicant name Ishitsuka 4, agent address 5-14-7 Hakusan, Bunkyo-ku, Tokyo Hayakawa Pill Telephone Tokyo 946-0531 (Representative) ■ Amendment to the Detailed Description of the Invention in the Specification Book 1, Mei Am, page 5, page 11, line 1 to page 11, line 4, are amended as shown in J below.

The numerous bags (1) that can be used may be either well-known auxiliary material bags or well-known gusset-free bags, but either type should be configured in advance (the drawing shows gusset-free bags). example). The bag body is formed of a plus deck sheet into an appropriate shape such as a rectangular nine-circle shape. The high-frequency voltage application device (2) is a movable type l! which is always placed inside or outside the bag (1) located at both ends when a large number of bags (1) are moved in a surface contact arrangement. 1 (201) (Φ pole and e pole) and a high frequency power source (202) that electrically connects each of these electrodes. The movable ω1 electrode (201) is configured to be movable in order to partially pressurize the wall of each bag (1) to be welded when applying a high frequency voltage.

The usable cover (not shown) may be any known cover that can be high-frequency welded. For example, a cardboard core with silver paper pasted on one side and wrapped in a plastic sheet, a cardboard core wrapped in a plastic sheet, a plastic plate, and a plastic plate covered with a plastic sheet. Various structures such as bonded structures can be used.

Next, the manufacturing method will be explained.

First example (second illustration, third illustration): Many bags (1) (
For example, the bag (of 10 sheets or less) was made without gusset, and the movable electrodes (201) (e-pole and e-pole) of the high-frequency voltage application device (2) were placed inside the bag (1) located at both ends. .

First, insulating films (3) (for example, cellophane, Teflon film, silicone cloth, environment cloth, and other insulating films that do not have dipoles) are placed inside a large number of bags (1), and the size of the bag is filled. The bags (1) are arranged by inserting the insulating film (film) and bringing the walls of the bags into surface contact with each other, and the bags (1) without the insulating film (3) inserted.
A surface contact arrangement is made on both ends.

Along with the arrangement process of the bags (1), appropriate frame-shaped movable electrodes (201) (Φ pole on one end of the bag, e pole on the other end) are placed inside the bags (1) at both ends. Place the high frequency power supply (20
2) Electrically connect to.

(See Figure 2) Following the high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing (squeezing) the mutual contact walls of each bag body (1) with the movable electrode (201). (See the figure).The applied high-frequency voltage passes through an insulating film that does not have a dipole, welds (W) the portion corresponding to the movable electrode on the mutual contact wall of each bag (1), and are joined together to form an accordion-like configuration (see Figure 7).

Therefore, if the insulating film (3) is used as described above, since the insulating film does not have a dipole, the film will not generate heat even though it passes a high frequency voltage, and will not generate heat when the film is inserted. There is no welding of both side walls of the bag body (1).

Following the high-frequency voltage application process, the process moves to a cover welding process (not shown), in which the bags at both ends of a large number of accordion-shaped bags are welded to one side of the cover, which can be high-frequency welded. The product is obtained by high frequency welding.

Second example (illustrated in the fourth diagram): A large number of bags (1) have no good fortune, but the number of bags used is greater than in the first example (for example, 10 or more bags were used). High frequency voltage application device (2) is allowed! ! It has an IJ electrode (201) and a fixed electrode (203), the movable electrode (201) is placed inside the bag (1) at both ends, and the fixed electrode (203> is placed inside the bag (1) at the center). It was placed in

First, the walls of a large number of bags (1) are brought into surface contact with each other, and the bags (1) are arranged, and the bags at both ends and the center (
Insert the same insulating film (3) as in the first example into the bag (1) other than 1).

Along with this bag arrangement process, appropriate frame-shaped movable molds 41 (201) (both bags have e-pole) are arranged inside the bags (1) at both ends, and the central bag (1) There is a fixed electrode (203) in the same frame shape as the movable electrode (201) (
Φ poles) are arranged, and each electrode is electrically connected to a high frequency power source (202).

Following the high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing the mutually contacting walls of each bag body (1) toward the fixed electrode (203) with the movable electrode (201). The principle of welding and joining each bag (1) in this step is the same as that in the high frequency voltage application step of the first example. (See Figure 7 for multiple bags joined together).

In addition, the fixed electrode (203) arranged inside the central bag (1)
) (ΦVi) is not necessarily required, but more uniform welding can be achieved by arranging it.

Following the above-mentioned high frequency voltage application process, the same process as the cover welding process of the first example is carried out, and the product is made 19.

Third example (shown in the fifth figure): A large number of bags (1) are without gusset, and the number of bags used is even greater than in the two examples.

(However, in the drawing, some of the many bags are omitted, and the same number as in the first example is illustrated).

The high frequency voltage application device (2) includes a movable electrode (201') and a metal frame (203')'! i: Yes, possible 1jJ thunder h
(201) A metal frame (203') was placed inside the bags (1) at both ends, and a metal frame (203') was placed inside the other bags (1).

First, a large number of bags (1) are arranged by bringing their walls into surface contact with each other.

Along with the bag arrangement step, appropriate frame-shaped movable electrodes (201) are arranged in the bag bodies (1) at both ends (e-pole in the bag body at one end, e-pole in the bag body at the other end), respectively. Moreover, inside each bag body (1) other than the cough bag body, a metal frame (20
3') and electrically connect to the high frequency power source (202).

Following this high-frequency voltage application preparation step, a high-frequency voltage is applied while pressing (squeezing) the mutually contacting walls of each bag body (1) with the movable electrode (201). By arranging the metal frame (203'''), the high-frequency voltage welds the corresponding parts of the movable electrode and the metal frame on the mutual contact wall of each bag (1) and the corresponding parts of the metal frames, so that each bag body (1) are joined together to form an accordion-like configuration (see Figure 7).

Following this high-frequency voltage application process, a cover welding process similar to the first example is performed to obtain a product.

Fourth example (shown in the sixth diagram): A large number of bags (1) (same number as in the first example) are made without gore, and a high-frequency pressure application device "11 (2
) (1) Possible! flJ'R pole (201) <e pole and e
poles) were placed outside the bag.

Bag arrangement step: Insulating films (3) similar to those in the first example are inserted into all the bags (1), and the bags (1) are arranged by bringing the walls of the bags into surface contact with each other.

High-frequency voltage application preparation step In addition to the two-bag arrangement step, an appropriate frame-shaped vJ electrode (201) is attached to the outer surface of the bag at both ends (the outer surface of the wall opposite to the mutual contact wall of the bag) (the outer surface of the bag at one end). To■
A pole and a pole (e) are placed on the outer surface of the bag at the round end, respectively, and electrically connected to a high frequency power source (202).

High-frequency voltage application process: Same as the high-frequency voltage application process in the first example. The principle of welding and joining each bag (1) is also the same as in the first example. (See Figure 7 for multiple bags joined together).

Cover welding process: Same as the first example.

Even if an auxiliary material bag is used in each of the above embodiments, it can be manufactured in exactly the same way.

2. Next to the column of detailed explanation of MingWIN's invention, the column of "4. Brief explanation of drawings" is supplemented as follows.

Record

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one example of a bag used in the manufacturing method of the present invention, FIGS. 2 and 3 are process schematic explanatory diagrams showing the first example of the manufacturing method of the present invention, and FIG. A schematic explanatory diagram showing a second example of the method, FIG. 5 is a schematic explanatory diagram showing a third example of the manufacturing method, FIG. It is a perspective view showing a large number of bags joined by the manufacturing method. In the figure (1)...Bag body (2)...High frequency voltage application device (201)...Movable electrode (202)...High frequency power source (203)...Fixed electrode 3, attached drawing (see 1 to 7).

Claims (1)

[Claims] A large number of plastic sheet bags are arranged in surface contact with each other, electrodes placed inside or outside the bags at both ends are electrically connected to a high frequency power source, and a high frequency voltage is applied to each bag. A method for manufacturing a cover with a bag, characterized in that a part of the surface contact portions of the bags are welded to each other, and a wall on the side opposite to the mutually welded wall of the bag body at both ends is high-frequency welded to one side of the cover which can be high-frequency welded.