JPH0651158U - Multi-layer cushioning material - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To improve the reliability of the cushioning function and thus the article protection function by making the air layer of the cushioning material with check valve two independent layers. [Structure] A plurality of small air chambers communicating with each other, which are formed by heat seals S ₁ provided on the peripheral portions and inner depths of the first outer film 1 and the middle film 2, and the middle film 2 and the second outer film. It is composed of a plurality of small air chambers which are formed by heat seals S ₂ provided on the peripheral edge portion and the inner back portion of the film 3 and communicate with each other. It is characterized by forming two air layers.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cushioning material used for transporting and storing articles, and more particularly to a multi-layer cushioning material having a high reliability in a cushioning function during use.

[0002]

[Prior art]

 The air mat type cushioning material is prized not only for its excellent cushioning function, but also for its packaging workability, returnability, reusability, and disposal, but it is usually made of a relatively thin film of synthetic resin such as polyethylene. Since it is inflated by the compressed air, it is easily damaged or damaged by protrusions and irregularities on the outer surface of the packaged item and the inner surface of the outer box. Has the drawback of completely losing the For this reason, attempts have been made to laminate and reinforce another synthetic resin layer, synthetic rubber layer, non-woven fabric, etc., which is resistant to damage and damage.

[0003]

[Problems to be solved by the device]

 Even if the present invention is damaged or damaged due to such a cause, the cushioning function of the unit as a whole does not lose the cushioning function, and the characteristic that the article is still protected can be maintained. It aims to increase the reliability of the material. It should be noted that the terms film and sheet are used only in accordance with the thickness of the film, and the film is used herein to include a sheet.

[0004]

[Means for Solving the Problems]

 In the present invention, as shown in FIG. 1, heat sealing S1 is applied to the peripheral portion and the inner rear portion of the first outer film 1 and the middle film 2 while leaving the communication passage P1. A plurality of small air chambers A communicated with the first outer film 1, the middle film 2 and the heat seal S1 by heat-sealing S2 while leaving the communication passage P2 in the peripheral edge and the inner depth of the outer film 3 of FIG. And a plurality of small air chambers B communicating with the middle film 2, the second outer film 3 and the heat seal S2. Therefore, air is removed from the check valves V1 and V2 installed between the first outer film 1 and the middle film 2 at the peripheral edge portion and between the middle film 2 and the second outer film 3 at the peripheral edge portion. When each of the small air chambers A and B is press-fitted, as shown in FIG. 2, the small air chambers A and B individually expand and form two independent air layers adjacent to both sides of the middle film 2. The second outer film 3 is shown in FIGS. 1 and 2 as having a smaller size than other films, but this is for the purpose of simplifying the heat-sealing condition. May be as large as. Further, the heat seals S1 and S2 can have a layout relationship of either normal, intersecting, or overlapping with each other, and as shown in FIG. 1, when the two are present alternately in the middle film 2, expansion occurs. The total thickness when two independent air layers are formed can be reduced. Furthermore, it is preferable that the check valves V1 and V2 are mounted at the same position for manufacturing and use, but different positions can be selected.

[0005]

[Effect of device]

 The multi-layer cushioning material of the present invention maintains the cushioning function by a plurality of small air chambers or even one air layer that remains even if any of the plurality of small air chambers A and B is damaged or damaged during use and disappears. The space and voids occupied by the air layer are compensated to some extent by the remaining one air layer, and the probability that both small air chambers A and B will be damaged or damaged is extremely low, and the reliability of the buffer function is high, It is also highly practical in terms of saving.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a structure of a multilayer cushioning material such as a heat sealing condition.

FIG. 2 shows a usage state in which air is press-fitted into the multi-layer cushioning material,
FIG. 2 is a sectional view taken along line XX of FIG. 1.

[Explanation of symbols]

 1 1st outer film 2 Medium film 3 2nd outer film S1 Heat seal S2 Heat seal

Claims (2)

[Scope of utility model registration request] 1. A first outer film and a middle film form a plurality of small air chambers which are heat-sealed and communicate with each other at a peripheral edge portion and an inner back portion, and the middle film and the second outer film have a peripheral edge portion and an inner portion. A plurality of small air chambers that are heat-sealed and communicate with each other are formed in the inner part, and when air is pressed into both of the small air chambers, two independent air layers are formed by sharing the middle film. , Multi-layer cushioning material with check valve. 2. The heat sealing in the inner back portion of the first outer film and the middle film and the heat sealing in the inner back portion of the second outer film are performed alternately. 1. Multi-layer cushioning material with check valve.