发明名称 |
STOFF MIT DURCHLASS. |
摘要 |
PCT No. PCT/GB92/00537 Sec. 371 Date Jan. 21, 1994 Sec. 102(e) Date Jan. 21, 1994 PCT Filed Mar. 24, 1992 PCT Pub. No. WO92/16434 PCT Pub. Date Oct. 1, 1992A bilayer laminated material has a gas permeability increasing greatly with temperature, achieved by cutting a star-shaped hole in it when it is relaxed and flat. On warming, the leaves between the radial cuts curl and disproportionately increase the hole size. Such a material, if flat at 5 DEG C. and wide open at 20 DEG C., is useful for packaging vegetable produce. |
申请公布号 |
DE69204666(D1) |
申请公布日期 |
1995.10.12 |
申请号 |
DE1992604666 |
申请日期 |
1992.03.24 |
申请人 |
BRITISH TECHNOLOGY GROUP LTD., LONDON, GB |
发明人 |
CHALLIS, ANTHONY ARTHUR LEONARD, LANGPORT, SOMERSET TA10 9DP, GB;BEVIS, MICHAEL JOHN, UXBRIDGE, MIDDLESEX UB8 1XS, GB |
分类号 |
B32B7/02;A61F13/02;B32B27/00;B32B27/08;B32B27/36;B65D5/42;B65D33/01;B65D65/40;B65D81/24;B65D81/26;B65D81/34;(IPC1-7):B65D81/24 |
主分类号 |
B32B7/02 |
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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