Inflatable space filler structure for container
a filler structure and container technology, applied in rigid containers, packaging, transportation and packaging, etc., can solve the problems of difficult to remove inflatable cushions, difficult to separate inflatable cushions from containers, and difficulty in dumping foam polystyrene, etc., to facilitate the configuring and fitting of inflatable cushions and facilitate the taking out of objects.
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first embodiment
[0054] FIGS. 1 to 9 show a space filler according to the present invention. Referring to FIG. 1, the space filler comprises a cushioning member 1 to encircle a shock-brittle object contained in a container for preventing the object from any shock action. The cushioning member 1 is like an air bag, comprising two rectangular pieces of resin film or sheet, which are laid on each other and thermo welded on their four sides 2 in airtight condition.
[0055] For the purpose of facilitating the thermowelding of the confronting two rectangular pieces of resin film or sheet, one extra piece of “thermowelding easy” resin film or sheet (such as polyethylene) of the same size and shape as the confronting pieces of resin film or sheet may be sandwiched therebetween, and then, the composite lamination of resin film or sheet is heated along its four sides and at selected areas to be sealed together. Otherwise, extra pieces of “thermowelding easy” resin film or sheet may be arranged at the four sides...
second embodiment
[0083] The space filler can have sacrificial lines alternating with the partition lines 23, thereby preventing rupture of the air bag 21 when an increased pressure is applied thereto, assuring that the article is kept in a safe condition.
[0084] Referring to FIGS. 15 and 16, a space filler 41 according to the third embodiment of the present invention is similar basically to the second embodiment. The number and arrangement of partition lines are so determined that the space filler when inflated with air may fit an article to be enwrapped.
[0085] As seen from the drawings, the space filler 41 is rectangular in shape, the four sides of which rectangular shape are thermowelded. Four partition lines 43 are formed by thermowelding parallel-strip pattern in the major plane, thus defining five adjacent divisional sections 44 and opposite lateral, marginal channels 45a and 45b, which communicate with the divisional sections 44.
[0086] An air inlet 47 is formed to open and communicate with t...
fourth embodiment
[0090] Referring to FIGS. 17 to 19, a space filler 51 according to the present invention comprises a cushioning member in the form of a dual air bag. Specifically the cushioning member comprises outside and inside closed bags 52 and 53 of resin films or sheets of different depths. The inside bag 53 is inserted in the outside bag 52, and their bottoms and opposite lateral and longitudinal sides 56, 57 and 58 are thermowelded and connected together to stagger their upper closed edges while the outside and inside bags 52 and 53 communicate at their bottoms, as best seen from FIG. 18. A lateral space 52a is left between the bottom of the inside bag 53 and that of the outside bag 52. Thus, the inside bag 53 forms a pocket fastened onto the outside bag 52 for containing an object.
[0091] The confronting planes of the outside and inside bags 52 and 53 are thermowelded so as to provide partition lines 59 and 60, which are predetermined distances apart from the longitudinal opposite sides of ...
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