JP2005162268A - Buffer packaging material - Google Patents

Abstract

An object of the present invention is to smoothly introduce air, which is injected from an air inlet, into each of a large number of sealed bags, effectively filling the sealed bags with air, and shortening the filling time.
SOLUTION: A plurality of long sealed bags 5 which are continuously divided in a lateral direction are provided, and an air injection path 6 which leads to one end side in the length direction of all of the sealed bags 5 is provided. A buffer comprising two sheets of synthetic resin film configured to be able to inject air from the air inlet 6a at one end of the path 6 and to keep the sealed bag 5 filled with air independently in a sealed state. The packing material 1 has a check valve 7 at the inlet portion 11a so as to maintain an independent sealed state of each of the sealed bags 5, and the air injection path 6 is the length of each of the sealed bags 5. The throttle part 17 which narrows the internal space at a position corresponding to the air inlet part 11a at one end in the direction was formed.
[Selection] Figure 1

Description

  The present invention relates to a cushioning packaging material made of a synthetic resin film and configured to swell when air is injected.

  Conventionally, in Patent Document 1, air can be filled from one place into all of a large number of sealed bag portions that are continuously divided in the lateral direction, and the air filled in the sealed bag portion does not escape from the sealed bag portion. Each sealing bag is provided with a check valve, and even if any of the sealing bags is broken, the synthetic resin film sheet is used as a material so that the outflow of air is only from the damaged sealing bag. A buffer packaging bag made using a buffer packaging material is known.

  As a cushioning packaging material developed based on the technology disclosed in Patent Document 1 and a cushioning packaging bag made using this cushioning packaging material, for example, those shown in FIGS. 10 to 18 are known. Yes.

  Hereinafter, the cushioning packaging material and the cushioning packaging bag made using the cushioning packaging material will be described with reference to FIGS. 10 to 18. The cushioning packaging material 1 includes two sheets 2 made of a synthetic resin film. By using 3 as a material and joining them by the heat seal part 4, a large number of divided long sealing bags 5 are continuously arranged in the horizontal direction. And while being able to inject air from the air inlet 6a of the end of the air injection path 6 formed in the length direction one end side of the sealing bag 5, the air with which the sealing bag 5 was filled does not escape from the sealing bag 5. A check valve 7 is provided at the inlet of one end in the longitudinal direction of each sealing bag 5 so as to maintain an independent sealed state of each sealing bag 5, and even if any sealing bag 5 is broken, The spillage is configured to come only from the broken sealed bag 5. More specifically, the check valve 7 is made of a synthetic resin film 2 which is much thinner than the two sheets 2 and 3 apart from the two sheets 2 and 3 constituting the cushioning packaging material 1. The sheets 8 and 9 are overlapped, and the sheets 8 and 9 are joined by the heat seal portions 10a to 10c. The heat seal portion 10a is a longitudinal direction of the sealing bag 5 in a state in which a check valve 7 constituted by two sheets 8 and 9 is provided between the two sheets 2 and 3 constituting the cushioning packaging material 1. Both sides of the flow path 11 are formed so that the width of the flow path 11 is gradually narrowed from one end to the other end, and the heat seal portion 10b is slightly from the inner end of the flow path 11 at the narrowed inner end side of the flow path 11. The sealing bag 5 has an isosceles triangle shape in which the central tip portion is directed to one end in the length direction of the sealing bag 5 at a distant position, and the heat seal portion 10c is slightly more than the heat seal portion 10b of the isosceles triangle shape. It is formed in a linear shape at the center in the width direction of the flow path 11 away from the other end in the length direction. The seats 8 and 9 constituting the check valve 7 have a length over the entire length in the width direction facing the arrangement direction of the sealing bags 5 of the cushioning packaging material 1 having a number of partitioned sealing bags 5, A number of check valves 7 formed by joining the two sheets 8 and 9 by the heat seal portions 10 a to 10 c are arranged in a continuous state so as to correspond to one end in the length direction of each sealing bag 5. By the way, in each check valve 7, in order to prevent thermal fusion and self-adhesion between the two sheets 8 and 9 at the inlet portion 11a of the flow path 11 leading to the air injection path 6, heat resistance is prevented. The coating layer 12 is formed on one sheet 8. Specifically, when the boundary between each sealing bag 5 and the air injection path 6 is formed by the heat seal part 13, the coating layer 12 is formed at the inlet part 11 a of the flow path 11 of each check valve 7. This is to prevent the sheets 8 and 9 from being blocked by heat fusion and to prevent the self-adhesion between the two sheets 8 and 9.

  The two sheets 8 and 9 including the check valves 7 arranged in parallel in a continuous state as described above are sandwiched at a predetermined position between the two sheets 2 and 3 constituting the cushioning packaging material 1, The two sheets 2 and 3 are joined by the heat seal portions 4 and 13 to form a large number of divided long sealing bags 5, and at the same time, a check valve 7 is provided at one end in the length direction of each sealing bag 5. Will be built in.

Reference numerals 4 a and 4 b denote heat seal portions formed at the end portions of the cushioning packaging material 1 at both ends in the length direction of the seal bag 5 in order to form the seal bag 5.
As described above, the cushioning packaging material 1 is composed of a large number of divided sealing bags 5 arranged in a row in the horizontal direction, and the cushioning packaging material 1 is sealed, for example, in a cylindrical shape. The outer parts of the sealing bags 5 positioned at both ends are closed to close the openings formed in the outer parts of the sealing bags 5 positioned at both ends of the sealing bags 5 that are lined up in a state where the bags 5 are folded in the length direction. The insertion port 15 of the package 14 is formed between the end portions of the cushioning packaging material 1 in the bending direction by bonding by welding, and the check valve 7 is injected by injecting air from the air injection port 6a. The air flows into each sealing bag 5 from the flow path 11 and the sealing bag 5 expands to form a buffer packaging bag. In FIG. 13, the two sheets 8, 9 constituting the check valve 7 by the air pressure flowing into each sealing bag 5 are one of the two sheets 2, 3 constituting the cushioning packaging material 1. The sealing bag 5 is inflated by being pressed against the inner surface. The article 14 to be packaged accommodated in the buffer packaging bag made in this way through the insertion port 15 is covered with the surrounding sealing bag 5 which is inflated, and is buffer protected.
JP 2002-225945 A

  In the conventional cushioning packaging material, the inner surface of the air injection path 6 formed on one end in the length direction of the sealing bag 5 is in a straight state as shown in FIG. 11, and is injected from the air inlet 6a. The air passes through the inlet 11a of the flow path 11 of the check valve 7 at one end in the length direction of each of the sealed bags 5 and each sealed bag 5 until the air pressure in the entire air injection path 6 reaches a constant pressure. On the other hand, there is a problem that it is difficult for air to smoothly flow in, and it takes time to fill all the sealed bags 5 with air.

  The object of the present invention is to solve such a problem, and the air injected from the air inlet is smoothly guided to each of the sealed bags, so that the air can be effectively filled into the sealed bags. It is an object of the present invention to provide a cushioning packaging material that can shorten the time.

  The shock-absorbing packaging material according to claim 1 of the present invention is provided with a large number of long sealed bags that are divided in a row in the transverse direction, and air is introduced into one end side in the length direction of the sealed bags. Two synthetic resin films are provided so that air can be injected from an air inlet at one end of the air injection path, and the sealed bags filled with air are each independently kept sealed. A cushioning packaging material made of a sheet made of sheet, having a check valve at the inlet so as to maintain an independent sealed state of each of the sealed bags, and the air injection path is in the length direction of each of the sealed bags A throttle part is formed to narrow the internal space at a position corresponding to the air inlet part at one end. It is configured to inject through a check valve provided at the inlet. It is characterized in.

The shock-absorbing packaging material according to claim 2 is characterized in that the throttle portion is formed immediately after the inlet portion of each sealed bag portion.
The cushioning packaging material according to claim 3 is characterized in that the throttle portion is formed by forming a heat seal portion with respect to two sheets of synthetic resin film constituting the air injection path.

  As described above, in the cushioning packaging material of the present invention, the air injection path is formed with the throttle portion that narrows the internal space at the position corresponding to the air inlet portion at one end in the length direction of each sealing bag. In the conventional example, the air that has been passed through with the air pressure injected can be smoothly guided to each sealed bag by opening the check valve that is closed by increasing the internal pressure of the inlet portion of each sealed bag portion. The filling time can be shortened.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings (FIGS. 1 to 9). In the figure, the same reference numerals as those in the conventional example denote the same members, and detailed description thereof will be omitted, and different parts from the conventional example will be described.

  First, the first embodiment shown in FIGS. 1 to 3 will be described. In this embodiment, the inner surface of the air injection path 6 formed on one end side in the length direction of the sealing bag 5 is connected to each sealing bag 5. Formed at one end of the cushioning packaging material 1 at one end in the length direction of the sealing bag 5 so as to be partially narrowed at a position corresponding to the inlet portion 11a of the flow path 11 of the check valve 7 at one end in the length direction. The throttle part 17 is formed by the heat seal part 16 as an air contact part connected to the heat seal part 4a. Specifically, the two sheets 2, 3 constituting the cushioning packaging material 1 are placed in the air injection path 6 at the end position in the width direction of each sealing bag 5 at the downstream side position in the air flow direction. The internal space of the air injection passage 6 is narrowed at a position corresponding to the inlet portion 11a of the flow passage 11 of the check valve 7 at one end in the length direction of each sealing bag 5 by being joined by the heat seal portion 16 connected to This is part 17. This throttle part 17 is formed immediately after the inlet part 11a, and the throttle part 17 increases the internal pressure of the inlet part 11a of each sealed bag 5 part, thereby injecting at a pressure higher than the injected air pressure. The check valve 7 that is closed before is opened, and the air injected through the check valve 7 is injected into each of the sealing bags 5. Since other configurations are the same as those of the conventional example, description thereof is omitted.

  In the above configuration, a part of the air injected from the air inlet 6 a at one end of the air injection path 6 passes through the throttle part 17 narrowed by the heat seal part 16 of the air injection path 6, and all of the sealed bags 5. Although it reaches the inlet 11a of the flow path 11 of the check valve 7, the air injected from the air inlet 6a hits the heat seal part 16 corresponding to each sealing bag 5 as shown in FIG. The internal pressure of the inlet portion 11 a of each sealed bag 5 is increased and guided to the check valve 7 of each sealed bag 5, and flows into the sealed bag 5 from the inlet portion 11 a of the flow path 11 of the check valve 7. That is, the air passing through the air pressure injected in the conventional example is made higher than the air pressure injected by the throttle portion 17 so that the closed check valve 7 can be easily opened, The air can be guided to the sealing bag 5, and air can be effectively filled in the sealing bag 5, thereby shortening the filling time.

  Next, a second embodiment shown in FIGS. 4 to 6 will be described. This embodiment includes a heat seal portion 16 connected to the heat seal portion 4a in addition to the configuration of the first embodiment. The two sheets 2 and 3 constituting the cushioning packaging material 1 are joined to the inlet portion 11a of the flow path 11 of the check valve 7 so as to narrow the internal space of the air injection path 6 as an air contact portion. Part of the air injected from the air inlet 6a at one end of the air injection path 6 is provided. Passes through the throttle part 17 between the heat seal parts 16 and 18 and reaches the inlet part 11a of the flow path 11 of the check valve 7 of all the sealing bags 5, but the air injected from the air inlet 6a is as described above. As in the first embodiment, each diaphragm 17 The internal pressure of the inlet portion 11a of the bag 5 part is made higher than the injected air pressure, and is led to the check valve 7 of each sealed bag 5. Before the injection, the check valve 7 that is closed is opened, and the check valve 7 It flows into the sealing bag 5 from the inlet 11a of the flow path 11.

  Next, a third embodiment shown in FIGS. 7 to 9 will be described. In this embodiment, the shape of the heat seal portion 4a at one end of the cushioning packaging material 1 on the inner surface side of the air injection path 6 is as follows. The wave-like heat seal part 4a ′ and the inlet part 11a of the flow path 11 of the check valve 7 are provided so that the two sheets 2 and 3 constituting the cushioning packaging material 1 are joined. The inner space of the air injection path 6 is narrowed by the heat seal part 18 to form a throttle part 17 between the wave heat seal part 4a 'and the heat seal part 18, and the air injected from the air inlet 6a is As in the above-described embodiment, the internal pressure is increased by the throttle portion 17 so as to be guided to the check valve 7 of each sealing bag 5 and to flow into the sealing bag 5 from the inlet portion 11a of the flow path 11 of the check valve 7. Become.

  Although the three embodiments have been described above, the shape of the heat seal part that forms the throttle part 17 for increasing the air pressure of the air injected from the air inlet 6a and guiding it to the check valve 7 of each sealing bag 5 is as follows. The present invention is not limited to the above embodiment.

It is an expanded view of the packaging material for buffers in the 1st Embodiment of this invention. It is a principal part expanded horizontal sectional view of the packaging material for buffers. It is a principal part expansion perspective view of the packaging material for buffers. It is an expanded view of the packaging material for buffering in the 2nd Embodiment of this invention. It is a principal part expanded horizontal sectional view of the packaging material for buffers. It is a principal part expansion perspective view of the packaging material for buffers. It is an expanded view of the packaging material for buffers in the 3rd Embodiment of this invention. It is a principal part expanded horizontal sectional view of the packaging material for buffers. It is a principal part expansion perspective view of the packaging material for buffers. It is an expanded view of the buffer packaging material in a prior art example. It is a principal part expanded horizontal sectional view of the packaging material for buffers. It is a principal part expanded vertical sectional view which shows the state before air filling of the packaging material for buffers. It is a principal part expanded vertical sectional view which shows the state after air filling of the packaging material for buffers. It is a principal part expansion perspective view of the packaging material for buffers. It is a perspective view which shows the state before filling the buffer packaging bag made using the same packaging material for cushioning with air. It is a perspective view which shows the state which filled the buffer packaging bag with air. It is a perspective view which shows the state which accommodates a to-be-packaged item in the buffer packaging bag. It is sectional drawing which shows the state which accommodated the to-be packaged object in the buffer packaging bag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Buffer packaging material 2,3 Sheet 4 Heat seal part 4a, 4b Heat seal part 4a 'Wave heat seal part 5 Sealing bag 6 Air injection path 6a Air injection port 7 Check valve 8, 9 Sheet 11 Flow path 11a Inlet part 16 Heat seal part 17 Restriction part 18 Heat seal part

Claims (3)

An air injection path provided at one end of the air injection path is provided with a plurality of long sealed bags divided in the lateral direction, provided with an air injection path leading to one end side in the length direction of all of the sealing bags The air-filled sealing bag is a cushioning packaging material composed of two synthetic resin film sheets configured to maintain a sealed state independently of each other. The inlet portion has a check valve so as to maintain an independent sealed state of the bag, and the air injection path narrows the internal space at a position corresponding to the air inlet portion at one end in the length direction of each of the sealed bags. A throttle portion is formed, and by this throttle portion, the air injected by increasing the internal pressure of the inlet portion of each sealed bag portion is injected into each of the sealed bags via a check valve provided at the inlet portion. A cushioning packaging material characterized by comprising. 2. The cushioning packaging material according to claim 1, wherein the throttle part is formed immediately after the inlet part of each sealed bag part. 3. The shock-absorbing packaging material according to claim 1, wherein the throttle portion is formed by forming a heat seal portion with respect to two sheets of synthetic resin film constituting the air injection path.

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