C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/10 (2006.01) C09J 7/02 (2006.01)
Patent
CA 2338062
Tape backing compositions of the present invention comprise a blend of a first and second polymer, the two polymers having a melting temperature of at least about 93 ~C (200 ~F). Tape backing compositions of the present invention are especially useful for making flexible films and tapes. Such films and tapes advantageously possess properties particularly useful for applications involving elevated temperatures, such as auto paint masking tape applications, where the flexible film is used as a backing. In one embodiment, the backing is chloride-free. In another embodiment, the backing is essentially free of plasticizers.
Les compositions de bande à pellicule protectrice de la présente invention comprennent un mélange d'un premier et d'un second polymères, les deux polymères présentant une température de fusion d'au moins environ 93 ·C (200 ·F). Ces compositions sont particulièrement utiles dans la fabrication de films et de bandes souples. De tels films et bandes possèdent avantageusement des propriétés particulièrement utiles pour des applications mettant en jeu des températures élevées, telles que des applications de bandes à masquer dans la peinture automobile, dans lesquelles le film souple est utilisé comme protection. Dans une réalisation de l'invention, la bande protectrice ne contient pratiquement pas de plastifiant.
Franzwa Sarah A.
Kollaja Richard A.
Solomonson Steven D.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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