发明名称 |
A PROCESS FOR OPTIMISING A GAS BARRIER COATING |
摘要 |
A process for enhancing the gas barrier properties of a composite laminate material whilst maintaining adequate bond strength, in which a gas barrier coating comprising a clay dispersion and a polymer solution or dispersion is positioned between two flexible plastics films using an adhesive, wherein a coating is applied to a first flexible polymer film at a coating weight (D), an adhesive is applied to either or both of the coated side of the first film or to a second polymer film and adhering the first and second films together to provide a material in which: (A/B). (C/D)>200, and in which: A/B>75; C>1.0; and D<1.5; wherein: A=Oxygen Transmission Rate for the laminate at 23 0C and 50% RH without the coating; B=Oxygen Transmission Rate for the laminate at 23 0C and 50% RH with the coating; C=Bond Strength in N/15 mm after the adhesive has fully cured; D=Coating Weight in g/m2 (dry). |
申请公布号 |
EP2477815(A1) |
申请公布日期 |
2012.07.25 |
申请号 |
EP20100752374 |
申请日期 |
2010.09.01 |
申请人 |
SUN CHEMICAL B.V. |
发明人 |
ILLSLEY, DEREK, RONALD;STREET, GRAHAM, TREVOR |
分类号 |
B32B27/18;B32B27/30;B65D65/40;B65D65/42;B65D81/00 |
主分类号 |
B32B27/18 |
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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