发明名称 |
Elongated plastic material |
摘要 |
A dunnage shock absorber and a method and apparatus for making the same is disclosed. The shock absorber is constructed from plastic material which forms a series of trigonal-shaped, gas-filled units which maintain adequate shock absorbing characteristics over a broad range of temperature conditions. This disclosed method includes the steps of forming a plastic tubular body, introducing a cooled gas into the body and forming individual trigonal-shaped united having cooled gas entrapped through angularly heating sealing the edges of such units. The disclosed apparatus forms plastic film into a series of gas-filled trigonal units through the use of fin seal rollers to seal the film into a tubular body. Sponge-like rollers downline of the fin seal rollers grip the tubular body and a conduit injects cooled gas into the tubular body. Horizontal and vertical sealers are provided downline of the sponge-like rollers to heat seal the tubular body with gas entrapped therein. |
申请公布号 |
US4847126(A) |
申请公布日期 |
1989.07.11 |
申请号 |
US19870001628 |
申请日期 |
1987.01.08 |
申请人 |
YAMASHIRO, HIROSHI;SUZUKI, MITSUGU |
发明人 |
YAMASHIRO, HIROSHI;SUZUKI, MITSUGU |
分类号 |
B29C65/18;B31D5/00;B65D81/02;B65D81/05 |
主分类号 |
B29C65/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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