发明名称 |
PEELABLE AND RECLOSABLE SEALING MATERIAL |
摘要 |
The invention concerns a sealing material (1) designed to be heat-sealed on one edge B (20) of a container (2) comprising: a substrate S (3), an adhesive pressure-sensitive layer P, a heat-sealing layer T (5). In said material: a) the adhesive force FATB between the heat-sealing layer T and the edge B of said container is greater than the cohesive force FCT of the heat-sealing layer T; b) the adhesive force FASP between the material layer of structure S and the adhesive layer P is greater than the cohesive force FCP; c) the cohesive force FCP of the adhesive layer P is greater than the cohesive force FCT of the heat-sealing layer T; and d) the cohesive force FCT of the heat-sealing layer T, evaluated by the formula MY.E/R, ranges between FCP and 0.75.FCP, MY being the elasticity modulus of the layer T, E its thickness and R the percentage of shrinkage deemed to be not less than 40 %; thereby providing an easy-to-open and reclosable heat-sealing material.
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申请公布号 |
WO0245949(A1) |
申请公布日期 |
2002.06.13 |
申请号 |
WO2001FR03824 |
申请日期 |
2001.12.04 |
申请人 |
PECHINEY EMBALLAGE FLEXIBLE EUROPE;TOURNIER, SANDRINE;SWYNGEDAUW, GILLES |
发明人 |
TOURNIER, SANDRINE;SWYNGEDAUW, GILLES |
分类号 |
B32B7/12;B32B27/08;(IPC1-7):B32B7/12;B65D77/20 |
主分类号 |
B32B7/12 |
代理机构 |
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代理人 |
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主权项 |
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