Blended CPE/crystalline thermoplastic polyolefin membrane

Details Blended CPE/crystalline thermoplastic polyolefin membrane Blended CPE/crystalline thermoplastic polyolefin membrane

1991-07-26

1993-07-20

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428141, 428247, 428255, 428516, B32B 2712, B32B 2732

Patent

active

052291979

ABSTRACT:
A blend of CPE and crystalline thermoplastic polyolefin (e.g., ultralow density polyethlene) is presented. This material is easily processed on the rolls of a rubbermill (i.e., calender) to form continuous sheets of membrane suitable for use in single ply roofing and other similar applications. In a preferred embodiment, a membrane formed from the composition of this invention is used as the bottom layer of a multilayer single ply roof with the upper layer or layers comprising known materials.

REFERENCES:
patent: 4978703 (1990-12-01), Ainsworth et al.
patent: 4978716 (1990-12-01), Flynn et al.

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