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Articles with binder-deficient slip coating and method for making same

  • US 9,915,762 B2
  • Filed: 08/20/2013
  • Issued: 03/13/2018
  • Est. Priority Date: 08/21/2012
  • Status: Active Grant
First Claim
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1. A process for making a sheet comprising:

  • (1) providing a polymeric core member comprising one or more layers and having a first major surface;

    (2) forming a footing layer on at least a portion of the first major surface, wherein the footing layer is viscoelastic and has a Tg that is lower than either the Tg or the Tm of the polymer at the first major surface of the core member;

    (3) applying a binder layer composition comprising a film forming polymer and particles to the surface of the footing layer to yield an assembly;

    then(4) tentering the assembly under sufficient heat to soften the footing layer such that the particles sink into the footing layer, the footing layer, binder layer, and particles constituting a slip control layer, wherein the average diameter of the particles is greater than the combined thickness of the footing layer and binder layer such that the particles protrude from the surface of the slip control layer opposite the core member.

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