JP5518548B2 - Packing cushioning material - Google Patents

Description

  The present invention relates to a cushioning material for packing used for packing an article when the article is transported.

  This type of packing cushioning material used for packing an article is mainly used for sealing a sponge or air. For the purpose of reusing such a packing cushioning material, packaging of the article is performed. Sometimes, air is inflated in accordance with the shape of the article, and after use, the air is extracted and thinned so as not to be bulky.

  For example, in Patent Document 1 described below, a plurality of airbags are detachably coupled at a coupling portion and are connected via a shut-off valve, and at least one airbag is provided with an air inlet that is filled with air. At least one air bag is provided with an exhaust port for exhausting air, and the air is automatically filled into the air bag by press-fitting the air from the air intake port. When exhausting, the exhaust port is unplugged. In this way, the air inside all the air bags is discharged.

  Moreover, the thing shown by the following patent document 2 has the resilience formed in the bag body provided with the channel | path which accept | permits the entrance / exit of air for the cushioning material for packing, and the sponge shape accommodated in this bag body. It has an elastic body and a blocking member that blocks the passage (a cover that has a female screw that engages with a male screw provided on the outer periphery of the passage), and blocks when the cushioning material is not used. By releasing the member and compressing the elastic body, the air inside the bag is discharged, and after discharging, the passage is blocked by the blocking member to block the air from entering and exiting, so that the compressed state of the elastic body is maintained and buffered. Make sure the material is not bulky. Further, when the cushioning material is used, the blocking member is released and the restoring force of the elastic body is used to inflate air into the bag body to function as the cushioning material.

JP 11-278548 A JP 2004-315070 A

  However, this type of cushioning material needs to be filled with air on the spot, but in the former configuration, it is necessary to use a dedicated pump because it is a configuration in which air is introduced using a pump. Not always available anywhere. Further, in the latter configuration, in order to maintain the air exhausted state or the inflowed state, it is necessary to block the passage by the blocking member so that the air does not flow backward every time the air inflow / outflow operation is interrupted. is there. For example, in the work of compressing the elastic body and discharging the air in the bag, it is usually difficult to discharge the air in the bag at a stretch, so the air will be discharged several times, If the passage is not blocked by the blocking member every time the discharging operation is interrupted, there is a disadvantage that the air flows backward due to the restoring force of the elastic body.

  In the latter configuration, air is introduced using the restoring force of the elastic body, so it can be used anytime and anywhere, but the elastic body is fully restored and the passage is blocked by the blocking member. In such a state, the bag body is difficult to bend, and cannot be handled when it is desired to bend the cushioning material at the corner portion of the article.

  The present invention has been made in view of such circumstances, and air can be introduced and discharged without using a special instrument. In addition, when air is introduced and discharged, the air flows backward and is intended. The main problem is to provide a cushioning material for packing that can eliminate the inconvenience that is difficult to be formed, and can be disposed also in the corner portion of an article to be packed.

  To achieve the above object, a cushioning material for packing according to the present invention includes a plurality of air chambers that are filled with air and expanded in parallel, and are connected in a flexible manner while communicating adjacent air chambers. And a sponge-like expansion / contraction member accommodated in each of the plurality of air chambers, and an air inflow / outflow passage that allows air inflow / outflow is formed in at least one of the air chambers An outflow inlet is provided, the air outflow inlet is opened by pressing from the side, and the air flow in the air outflow / inflow passage is blocked by using the difference in air pressure before and after releasing the pressure. It features a valve.

Therefore, when the cushioning material is not used, the shutoff valve is opened by pressing the air outflow inlet with a finger or the like from the side, and the expansion / contraction member is compressed in this state to discharge the air in the bag. Such an operation is performed a plurality of times with different compression points of the bag body until the air in the bag body is almost exhausted (for example, by sequentially removing air from the air chamber far from the air outflow inlet to the air chamber close to it). However, the air outflow inlet is provided with a shutoff valve that shuts off the air flow by using the difference in air pressure between the front and rear. Even when the operation of compressing the bag body is stopped halfway by releasing the pinching finger, etc., air does not flow back into the bag body due to the restoring force of the expansion / contraction member. For this reason, it is not necessary to block the air outflow inlet with a cap or the like.
In addition, even if the pressure from the side is released after the air in the bag is discharged, the air outflow inlet is blocked by the shut-off valve, so that the bag can maintain a state in which the air has escaped, The cushioning material is flat and not bulky. In addition, since the plurality of air chambers are connected so as to be bendable, the cushioning material can be stored compactly when not in use.

  On the other hand, when using the cushioning material, if the shutoff valve is opened by pressing the air outflow inlet with a finger from the side or the like, the restoring force of the expansion / contraction member accommodated in each bag body, First, air is introduced into the air chamber in which the air outflow inlet is formed, and then air is introduced sequentially into the air chamber adjacent to the air chamber and further into the air chamber adjacent to the air chamber. Air is introduced into all the air chambers constituting the. And if you release the pressure from the side of the air outflow inlet by releasing the finger gripping the air outflow inlet, etc., even if the pressure in the air chamber increases due to the bag body being pressed from the outside, Air is prevented from flowing back and discharged outside the bag.

Further, since the plurality of air chambers are connected so as to be bendable, the cushioning material can be bent through the connecting portion even after the air chamber is filled with air. For this reason, the cushioning material can be appropriately folded and then applied to the corner portion of the article, and the cushioning material can be disposed at an optimal position in accordance with the shape of the article.
Here, the shut-off valve is elastically deformed so that it can be seated on the valve seat wall that is juxtaposed on the valve seat wall protruding from the inner surface of the air inflow / outflow passage to the air inflow / outflow passage and the valve seat wall of the air inflow / outflow passage. A pair of valve seat walls protruding from the inner surface of the air inflow / outlet passage to the air inflow / outflow passage, and the other valve seat wall of each valve seat wall, You may make it comprise from the tongue piece which is arranged in parallel on the opposite side and the opposite side, and elastically deforms so that it can seat on the said valve seat wall.

In the former configuration, the valve mechanism is provided collectively at one place of the air inlet / outlet, so that the structure of the shutoff valve can be simplified. In the latter configuration, the pressing force applied to operate one of the valve mechanisms hardly affects the function of the other valve mechanism, and it becomes easy to operate, and the intended air flow It becomes easy to form only.

Further, the above-described bag body may be configured by a member formed in a bag shape in advance, or may be configured by joining two sheet members at the periphery thereof. In addition, even if the bag body is divided into a plurality of air chambers by appropriately partitioning one bag-like member by means such as fusion, a plurality of bag-like members are connected at the side edge portions. These air chambers may be arranged side by side.

  As described above, according to the packing cushioning material of the present invention, a plurality of air chambers are arranged side by side, and adjacent air chambers are connected to each other so as to be able to be bent, and the sponge-like resilience is provided. Each of the air chambers is provided with an air inlet / outlet formed with an air inlet / outlet passage allowing air inflow / outflow to at least one of the air chambers. A shut-off valve is provided that opens when pressed and blocks the air flow in both directions of the air inflow / outflow passage when the pressure is released, so that air can be introduced and discharged without using special equipment. In addition, it is possible to eliminate the inconvenience that it is difficult to form an intended state due to the backflow of air during the introduction and discharge of air. Further, since the adjacent air chambers are connected so as to be able to bend, it is possible to dispose them at the corners of the articles to be packed even after being filled with air.

  Here, if a plurality of air chambers are formed by adhering or fusing the front and back sheets of the bag body to create a partition wall, an air chamber of any size can be obtained by appropriately changing the fusing location. It becomes possible to form a partition easily.

  In addition, the shut-off valve is elastically deformed so that it can be seated on the valve seat wall in parallel with the valve seat wall protruding from the inner surface of the air inflow / outflow passage to the air inflow / outflow passage and the valve seat wall of the air inflow / outflow passage If it is made up of a tongue piece, the shut-off valve is opened by pressing from the side and shuts off the two-way air flow in the air inflow / outflow passage by utilizing the difference in air pressure before and after releasing the press. Can be formed with a simple structure.

  The shut-off valve has a pair of valve seat walls protruding from the inner surface of the air outflow inlet to the air inflow / outflow passage, and a side opposite to the side of each valve seat wall facing the other valve seat wall. And the tongue piece elastically deformed so that it can be seated on the valve seat wall, the operation of one valve mechanism hardly affects the function of the other valve mechanism, Since the operation of the valve mechanism can be made independent, an intended air flow can be easily formed.

FIG. 1 is a view showing a state in which the packing cushioning material according to the present invention is filled with air, (a) is a front view thereof, and (b) is a cross section cut along line BB in (a). It is a figure, (c) is sectional drawing cut | disconnected by CC line of (a). FIG. 2 is a view showing a state in which the cushioning material for packing according to the present invention is evacuated, (a) is a front view thereof, and (b) is a cross section cut along line BB in (a). It is a figure, (c) is sectional drawing cut | disconnected by CC line of (a). FIG. 3 is an enlarged cross-sectional view showing a shut-off valve provided at the air outflow inlet of the packing cushioning material according to the present invention, and (a) is a side cross-section showing a state in which no pressing force is urged from the side. It is sectional drawing cut | disconnected by the figure and the II line | wire. Further, (b) is a side sectional view showing a state in which a pressing force is applied from the side and a sectional view cut along the line II. FIG. 4 is a view showing an operation example of the shutoff valve provided at the air outflow inlet of the cushioning material for packing according to the present invention, and (a) shows the operation state when the pressure outside the bag body is higher than the internal pressure. It is a figure shown, (b) is a figure which shows the operation state when the internal pressure of a bag body is higher than an external pressure. FIG. 5 is a diagram showing an example of storing and packing an article in a box using the packing cushioning material according to the present invention, (a) showing a state before the article is stored in a box, and (b) It is a figure which shows the state which accommodated the articles | goods in the box with the cushioning material for packing. FIG. 6 is a view showing another configuration example of the shut-off valve provided at the air outlet / inlet of the cushioning material for packing according to the present invention. FIG. 7 is a view showing an example of the operation of the shut-off valve shown in FIG. 6, and (a) shows the side of the valve mechanism on the outer side of the air outflow inlet in order to introduce air from the outside to the inside of the bag body. FIG. 6B is a view of introducing air by pressing from the side, and (b) pressing the portion of the valve mechanism closer to the inside of the air outflow inlet from the side in order to discharge air from the inside of the bag body to the outside. FIG. FIG. 8 is a diagram illustrating an operation example of the shut-off valve illustrated in FIG. 6, and (a) illustrates an operation when the inner pressure of the bag body is higher than the outer pressure in a state where the side pressure is released. (B) is a figure which shows operation | movement when the pressure of an outer side becomes higher than the internal pressure of a bag body in the state which released the press from a side.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 and 2, the cushioning material 1 for packing is accommodated in a bag body 3 having an air inflow / outlet port 2 in which an air inflow / outflow passage allowing air inflow / outflow is formed, and the bag body 3. And an expansion / contraction member 4 having a sponge-like restoring property.

The bag body 3 is formed by integrally molding a waterproof soft synthetic resin such as polyvinyl chloride into a bag shape. For example, the bag body 3 is formed in a size of 30 cm square, and is bonded to appropriate positions of the front and back sheets 3a and 3b. A partition wall (joined portion) 5 is formed by bonding to each other by fusion bonding or the like, and the interior is defined by a plurality of air chambers 6 by the partition wall.
In this example, a linear partition that continuously extends in the vertical direction except for the vicinity of the upper and lower ends at a position shifted inward by about one third from each end so as to divide the bag body 3 into three equal parts in the width direction. 5, the partition body 5 divides the bag 3 into three air chambers 6 having substantially the same size.

Therefore, the bag body 3 includes three air chambers 6 arranged in parallel in the width direction, and the adjacent air chambers 6 communicate with each other by the communication portion 7 provided above and below the partition wall 5. It is connected so that it can be bent at the connecting portion. In addition, although the example which used the bag-shaped member integrally molded by the bag shape was shown as the bag body 3, the sheet | seats 3a and 3b of two rectangular shapes and other arbitrary shapes are adhere | attached or melt | fused on the periphery, etc. It may be formed in a bag shape by bonding with the above.
The expansion / contraction member 4 is disposed in each air chamber 6 and is composed of a member having good resilience such as urethane. In this example, the expansion / contraction member 4 has a rectangular shape according to the shape of the air chamber 6. Is formed.

The air outflow inlet 2 is provided at the peripheral edge of the bag 3 so as to communicate with the central air chamber 6 of the packing cushioning material 1 (in the drawing, at the center of the upper edge). As shown in FIG. The tube 10 forming the entrance passage 8 is configured to be airtightly fixed to the bag body 3 so that a part thereof protrudes to the outside. The tube 10 is made of a soft synthetic resin that is elastically deformed by urging a pressing force from the side by picking it with a finger or the like. The valve seat wall 11 protruding from the inflow / outflow passage 8 and the tube at the portion where the valve seat wall 11 is formed projecting from the inner surface in the vicinity of the valve seat wall 11 of the air outflow / inflow passage 8 to the air inflow / outflow passage 8. When the outer peripheral wall is pressed from the side, it is separated from the valve seat wall 11, and when the pressing force from the side is released, it is elastically deformable to be seated on the valve seat wall 11 using the air pressure difference between the front and rear of the valve seat wall 11. Tongue pieces 12 and 13 are juxtaposed.
Due to the valve seat wall 11 provided in the tube 10 constituting the air outflow inlet 2 and the tongue pieces 12 and 13 which are elastically deformed so as to be seated on the valve seat wall 11 at normal time (when there is no pressing force from the side). In FIG. 1, a shutoff valve 15 is configured to block the bidirectional air flow in the air inflow / outflow passage 8 (block air inflow / outflow) using the difference between the front and rear air pressures.

  Accordingly, the shutoff valve 15 is shown in FIG. 3B when the outer peripheral wall of the portion of the tube 10 protruding from the bag 3 where the valve seat wall 11 is provided is pressed with a finger and pressed from the side. As described above, the tongue pieces 12 and 13 on the front and rear of the valve seat wall 11 move away from the valve seat wall 11 so that a gap is formed between the valve seat wall 11 and an open state is established, allowing air to flow. Become. Further, the release of the pressing of the tube 10 brings the front and rear tongue pieces 12 and 13 upright in the vicinity of the valve seat wall 11, and a difference occurs in the air pressure before and after the shutoff valve 15 (valve seat wall 11). Then, the tongue pieces 12 and 13 on the relatively high pressure side abut against the valve seat wall 11 so as to block the air flow from the high pressure side to the low pressure side.

  In the above configuration, as shown in FIG. 2, when packing an article using the packing cushioning material 1 in a state where the air of the bag body 3 is removed, the number of packing buffers required for packing is used. The material 1 is prepared, and the opening state as shown in FIG. 3B is formed by picking the air outflow inlet 2 for each packing cushioning material 1. Then, since the expansion / contraction member 4 of each air chamber 6 tries to expand by its own restoring force, external air enters the central air chamber 6 through the air inflow / outflow passage 8 and then enters the central air chamber 6. Then, air flows into the adjacent air chamber 6 through the communicating portions 7 formed at the upper and lower end portions of the partition wall 5. And after inflating to the appropriate magnitude | size, the inflow of the air from the outside stops and the state where the air entered is maintained by releasing the air outflow inlet 2 which was picked. If the expansion / contraction member 4 is completely restored, the internal pressure and the external pressure of the bag body 3 are in a balanced state. Therefore, there is no pressure difference before and after the shut-off valve 15, and the tongue pieces 12, 13 are connected to the valve seat wall 11. However, when the expansion / contraction member 4 is not completely restored, the internal pressure of the bag body 1 is relatively lower than the external pressure due to the restoration function of the expansion / contraction member 4 (the external pressure is reduced). As shown in FIG. 4 (a), the outer tongue piece 12 abuts against the valve seat wall 11 to prevent the inflow of air, and the state when the hand is released is maintained. The Therefore, it is possible to adjust the inflow amount of air flowing into the bag body 3 by turning on / off (biasing / releasing) the pressing force from the side urging the tube 10, and the expansion / contraction member 4 is completely restored. In any state up to the above, it is possible to adjust the swelling of the cushioning material 1.

  Then, the expanded cushioning material 1 is used as a plate that is spread laterally, or is used in a state of being bent with a partition wall (joining portion) as a boundary, as shown in FIG. Is compressed, the bag body 3 of the cushioning material 1 is compressed, so that the internal pressure becomes relatively high and the inner tongue 13 abuts against the valve seat wall 11 to prevent the air from flowing out of the bag body. As a result, a state of being firmly pressed against the article is secured.

  Further, in order to reuse the cushioning material 1 for packing, when the air of the bag body 3 is extracted, the valve seat wall 11 of the portion protruding from the bag body 3 of the tube 10 constituting the air outflow inlet 2 is The outer peripheral wall of the provided part is picked and opened with a finger, and in this state, the expansion / contraction member 4 is compressed and air is extracted. In this process, even if the picked tube 10 is released, if the balance between the internal pressure and the external pressure of the bag body 3 breaks down, the tongue piece on the relatively high pressure side comes into contact with the valve seat wall 11 to close the valve. Therefore, the current situation will be maintained. For example, if the expansion / contraction member 4 is inflated and the internal pressure of the bag body 3 becomes relatively lower than the external pressure, the outer tongue 12 abuts against the valve seat wall 11 and the air flows backward and flows into the bag body 3. There is no longer to do. For this reason, when all the air in the bag is exhausted in a plurality of times, the air does not flow back into the bag 3 even if the hand is temporarily removed from the tube 10, and the air is discharged. Can be done.

  And since the bag body 3 from which the air has escaped can be folded with the partition wall (joining part) 5 as a boundary, it can be folded and put together in a compact manner.

  Although the case where three air chambers 6 are provided in the bag body 3 is shown in the above configuration, the number may be two or four or more, and the partition wall 5 is provided so as to be partitioned vertically. However, it may be partitioned in the horizontal direction or vertically and horizontally in the vertical and horizontal directions. If the number of the partition walls 5 is increased, even an article having a complicated shape can be brought into contact with the outer surface thereof.

  The shut-off valve 15 is not limited to the above-described configuration, and may be any configuration as long as it shuts off the bidirectional air flow using the pressure difference between the front and the back. For example, as shown in FIG. A pair of valve seat walls 11a and 11b projecting from the inner surface of the tube 10 forming the air inflow / outflow passage 8 at an interval, and the side of each valve seat wall 11a and 11b facing the other valve seat wall The tongue pieces 12 and 13 may be configured to be elastically deformed so as to be seated on the valve seat walls 11a and 11b.

  That is, the shut-off valve 15 forms a first valve mechanism 15a by a valve seat wall 11a formed near the outer opening end of the tube 10 and a tongue piece 12 standing outward from the valve seat wall 11a. When the second valve mechanism 15b is formed by the valve seat wall 11b formed in the portion closer to the inner side of 10 and the tongue piece 13 standing further on the inner side, and air is to be introduced into the bag body 3 As shown in FIG. 7 (a), by pressing the outer peripheral wall of the part where the valve seat wall 11a constituting the first valve mechanism 15a is provided from the side, the tongue piece 12 is removed from the valve seat wall 11a. The air is guided to the second valve mechanism 15b, and air is introduced into the bag body by separating the tongue 13 from the valve seat wall 11b using the restoring force of the expansion / contraction member 4 (expansion / contraction member). The restoring force of 4 makes the inner side of the second valve mechanism 15b relative to the outer side. Tongue 13 is moved away from the valve seat wall 11b air is introduced into the bag body because the pressure is lowered to). When it is desired to discharge air from the bag 3, as shown in FIG. 7 (b), the outer peripheral wall of the portion where the valve seat wall 11b constituting the second valve mechanism 15b is provided is seen from the side. By pressing, the tongue piece 13 is opened away from the valve seat wall 11b, and the air in the bag is guided to the first valve mechanism 15a. Then, by compressing the expansion / contraction member 4 in this state, the tongue 12 is separated from the valve seat wall 11a, and the air in the bag body is discharged (the compression of the expansion / contraction member 4 causes the inside of the first valve mechanism 15a to be Since the pressure is relatively higher than the outside, the tongue piece 12 is separated from the valve seat wall 11a and the air is discharged to the outside).

  When air is introduced and discharged, when the finger is removed from the tube 10 and the pressing force from the side is released, the respective tongue pieces 12 and 13 abut against the valve seat walls 11a and 11b adjacent thereto. In a state where the internal pressure of the bag body 3 is higher than the external pressure, the tongue piece 13 of the second valve mechanism 15b is brought into contact with the valve seat wall 11b as shown in FIG. In a state where the discharge is suppressed and the internal pressure of the bag body 3 is lower than the external pressure, the tongue 12 of the first valve mechanism 15a comes into contact with the valve seat wall 11a to suppress the inflow of air. .

  Therefore, since the shut-off valve 15 that shuts off the bidirectional air flow in the air inflow / outflow passage 8 (blocks air inflow / outflow) is configured by such a configuration, when operating one valve mechanism, The function of the other valve mechanism is hardly affected, and the operation of discharging the air in the bag body 3 or the operation of flowing air into the bag body 3 can be reliably performed by the operation of one valve mechanism. (The intended work can be performed reliably).

DESCRIPTION OF SYMBOLS 1 Packing buffer material 2 Outflow inlet 3 Bag 3a, 3b Sheet 4 Expansion / contraction member 5 Bulkhead 6 Air chamber 7 Communication part 8 Air inflow / outflow passage 10 Tube 11, 11a, 11b Valve seat wall 12, 13 Tongue piece 15 Shut-off valve 15a First valve mechanism 15b Second valve mechanism

Claims (3)

A plurality of air chambers that are filled with air to be expanded in parallel and bendably connected while communicating adjacent air chambers, and sponge-like resilience accommodated in each of the plurality of air chambers An expansion / contraction member having
Providing at least one air chamber with an air inflow / outlet formed with an air inflow / outflow passage for allowing air inflow / outflow;
The air outflow inlet is provided with a shut-off valve that opens by pressing from the side and blocks the bidirectional air flow in the air outflow / inflow passage by utilizing the difference between the front and rear air pressures by releasing the pressure ,
The shut-off valve is seated on the valve seat wall in parallel with the valve seat wall projecting from the inner surface of the air inflow / outflow passage to the air inflow / outflow passage and the valve seat wall of the air inflow / outflow passage. A packing cushioning material characterized by comprising a tongue piece that is elastically deformable . A plurality of air chambers that are filled with air to be expanded in parallel and bendably connected while communicating adjacent air chambers, and sponge-like resilience accommodated in each of the plurality of air chambers An expansion / contraction member having
Providing at least one air chamber with an air inflow / outlet formed with an air inflow / outflow passage for allowing air inflow / outflow;
The air outflow inlet is provided with a shut-off valve that opens by pressing from the side and blocks the bidirectional air flow in the air outflow / inflow passage by utilizing the difference between the front and rear air pressures by releasing the pressure ,
A pair of valve seat walls projecting from the inner surface of the air outflow inlet to the air inflow / outflow passage at a distance from each other, and a side of each of the valve seat walls facing the other valve seat wall; A cushioning material for packing, comprising: an elastically deformable tongue piece arranged side by side and seated on the valve seat wall . The packing cushioning material according to claim 1 or 2, wherein the plurality of air chambers are formed by joining front and back sheets of the bag body to form a partition wall.

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