发明名称 |
JOINT ON PACKING CONTAINERS AND A METHOD AND ARRANGEMENT FOR THE MANUFACTURE OF THE SAME |
摘要 |
Joints in packing containers of heat-sealable gas-tight laminate are sensitive to deformation, since this often results in a deterioration of the gas-tightness. This is due to the accumulation of melted thermoplastics which is produced during the heat-sealing. The said weaknesses are eliminated in that the sealing zone of the joint is given a limited width and is placed at a distance from the edge of the laminate. A method and an arrangement for realizing this comprises a heating zone whose width is limited in relation to the width of the sealing jaws which are used for the sealing together of the material layers. |
申请公布号 |
CA1225049(A) |
申请公布日期 |
1987.08.04 |
申请号 |
CA19830441496 |
申请日期 |
1983.11.18 |
申请人 |
TETRA PAK INTERNATIONAL AB |
发明人 |
SJOESTRAND, UNO;ANDERSSON, SVEN |
分类号 |
B65D3/28;B31B1/74;B65D5/42;B65D5/56;B65D33/22 |
主分类号 |
B65D3/28 |
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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