发明名称 |
DUNNAGE SHOCK ABSORBER AND METHOD AND APPARATUS FOR MAKING SAME |
摘要 |
A dunnage shock absorber and a method and apparatus for making the same is disclosed. The shock absorber is constructed from plastics material e.g. a laminate of polyethylene and polyester or nylon, 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 heat 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 |
GB2178694(B) |
申请公布日期 |
1990.01.31 |
申请号 |
GB19860000569 |
申请日期 |
1986.01.10 |
申请人 |
HIROSHI * YAMASHIRO;KO * SUZUKI |
发明人 |
HIROSHI * YAMASHIRO;KO * SUZUKI |
分类号 |
B29C65/18;B31D5/00;B65D81/05 |
主分类号 |
B29C65/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|