Invention Grant
- Patent Title: Multilayer clear over color polyolefin sheets and layered backing structure
- Patent Title (中): 多层透明聚烯烃片材和分层背衬结构
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Application No.: US12548946Application Date: 2009-08-27
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Publication No.: US08007902B2Publication Date: 2011-08-30
- Inventor: Dennis C. Smith
- Applicant: Dennis C. Smith
- Applicant Address: US OH Akron
- Assignee: A. Schulman, Inc.
- Current Assignee: A. Schulman, Inc.
- Current Assignee Address: US OH Akron
- Agency: Jones Day
- Main IPC: B32B27/32
- IPC: B32B27/32 ; B29C47/06

Abstract:
A multilayer structure includes a clear polyolefin layer, a colored polyolefin layer, and a random polyolefin backing layer. The colored and backing layers are coextruded and are permanently bonded at a layer interface, which is exclusive of an adhesive. The structure has a DOI of 70 or greater and passes a gravelometer impact test per the GM9508P standard, with a 10 pint load, at a −30° C. temperature, and at an impact angle of 30 degrees. Among other uses, the structures are appropriate for use as body panels in the motor vehicle industry. The structures display a “class A” finish and meet a variety of requirements for durability and weatherability. An ABA structured backing layer and a method of making it are also described herein.
Public/Granted literature
- US20100015426A1 Multilayer Clear Over Color Polyolefin Sheets and Layered Backing Structure Public/Granted day:2010-01-21
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