Printed thermoplastic film with radiation-cured overprint varnish
    1.
    发明申请
    Printed thermoplastic film with radiation-cured overprint varnish 有权
    带有辐射固化套印清漆的印刷热塑性薄膜

    公开(公告)号:US20050019533A1

    公开(公告)日:2005-01-27

    申请号:US10920866

    申请日:2004-08-18

    Abstract: A packaged food product includes a food product and a package enclosing the food product. The package may be formed from a coated, printed film that includes a substrate film including one or more thermoplastic materials and having an average thickness of less than about 15 mils. An image is printed on the print side of the substrate film. A radiation-cured varnish covers the printed image. The radiation-cured varnish was formed by coating the printed image with a radiation-curable varnish that includes one or more polymerizable reactants and optionally one or more photointiators. The radiation-curable varnish is subsequently exposed to radiation sufficient to polymerize at least 90 weight % of the polymerizable reactants. When the coated, printed film is tested according to the FDA migration test protocol, no more than 50 parts per billion total of any of the polymerizable reactants and the optional photoinitiators migrate within 10 days at 40° C. from the coated, printed film into a food simulant of 95 weight % ethanol and 5 weight % water enclosed within a test container formed from the coated, printed film so that the food simulant contacts the food side of the substrate film and the ratio of volume of food simulant to surface area of coated, printed film is 10 milliliters per square inch.

    Abstract translation: 包装的食品包括食品和包装食品的包装。 包装可以由涂覆的印刷膜形成,该膜包括包含一种或多种热塑性材料并且具有小于约15密耳的平均厚度的基底膜。 图像被印刷在基材膜的印刷侧上。 辐射固化清漆覆盖印刷图像。 通过用包含一种或多种可聚合反应物和任选的一种或多种光引发剂的可辐射固化清漆涂覆印刷图像来形成辐射固化清漆。 随后将可辐射固化的清漆暴露于足以聚合至少90重量%聚合反应物的辐射。 当涂布的印刷膜根据FDA迁移试验方案进行测试时,不超过50亿分之几的任何可聚合反应物和任选的光引发剂在40℃下从涂覆的印刷膜迁移到10天内 由涂覆的印刷膜形成的测试容器内的95重量%乙醇和5重量%水的食物模拟物,使得食物模拟物接触基底膜的食物侧面,食物模拟物的体积与表面积的比例 涂布的印刷薄膜为10毫升/平方英寸。

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