Invention Application
- Patent Title: POLYETHYLENE FILM WITH HIGH TENSILE STRENGTH AND HIGH TENSILE ENERGY TO BREAK
- Patent Title (中): 聚乙烯薄膜,具有高拉伸强度和高拉伸强度
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Application No.: US12452526Application Date: 2008-07-02
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Publication No.: US20100144224A1Publication Date: 2010-06-10
- Inventor: Anton Peter De Weijer , Hendrik Van De Hee , Martinus Wilhelmis Maria Gemma Peters , Sanjay Rastogi , Bing Wang
- Applicant: Anton Peter De Weijer , Hendrik Van De Hee , Martinus Wilhelmis Maria Gemma Peters , Sanjay Rastogi , Bing Wang
- Applicant Address: NL ARNHEM
- Assignee: TEIJIN ARAMID B.V.
- Current Assignee: TEIJIN ARAMID B.V.
- Current Assignee Address: NL ARNHEM
- Priority: EP07013377.2 20070709
- International Application: PCT/EP2008/005385 WO 20080702
- Main IPC: B32B5/02
- IPC: B32B5/02 ; B29C55/02 ; C08F110/02

Abstract:
The present invention pertains to a UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 0.9 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.
Public/Granted literature
- US09393734B2 Polyethylene film with high tensile strength and high tensile energy to break Public/Granted day:2016-07-19
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