发明名称 |
PLASTIC GAS BARRIER PACKAGING LAMINATE |
摘要 |
The invention relates to a gas barrier packaging laminate (10) having durability to stress crack formation and yet a bending stiffness and good integrity between the laminate layers, comprising outer layers of heat-sealable polyolefin (16, 17), two polymer carrier layers (11, 12) each being coated with a SiOx gas barrier layer (13, 14), wherein the two polymer carrier layers with SiOx layers are laminated to each other by means of an intermediate polymer layer (15), which includes a thermoplastic polymer having high elastomeric properties. The required stiffness of the packaging laminate is obtained by forming a structural sandwich construction with two stiff carrier layers separated by a relatively thick lower density intermediate layer. Preferably, the thickness of the intermediate polymer layer (15) constitutes from about 30 to about 55% of the total thickness of the packaging laminate (10). The invention also relates to a packaging container such as a pouch or similar manufactured from the packaging laminate and to a method of manufacturing of the packaging laminate. |
申请公布号 |
WO2005007518(A3) |
申请公布日期 |
2005.11.17 |
申请号 |
WO2004US22124 |
申请日期 |
2004.07.12 |
申请人 |
TETRA LAVAL HOLDINGS & FINANCE S.A.;BUERKI, MONIKA;TETRA PAK INC.;CHIQUET, ANDRE;GOLAY, RICHARD |
发明人 |
BUERKI, MONIKA;CHIQUET, ANDRE;GOLAY, RICHARD |
分类号 |
B32B7/02;B32B25/08;B32B27/08;B32B27/32;B65C9/25;B65D;B65D75/00 |
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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