B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/30 (2006.01) B32B 27/08 (2006.01) B42D 15/10 (2006.01)
Patent
CA 2421643
Multi-layered cards embodying the invention include a buffer layer between a PET layer and a PVC layer. The buffer layer is selected to have temperature and stress responsive properties intermediate to those of the PET and PVC layers. The buffer layer is formed of a material which has a low degree of moisture absorbance whereby the surface of the PVC layer is protected from moisture in the atmosphere. The buffer layer is also more elastic than the PVC layer. .
Herslow John H.
Smart & Biggar
LandOfFree
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