Invention Grant
- Patent Title: Method for producing polyethylene-based resin laminated foam sheet, polyethylene-based resin laminated foam sheet, and interleaf for glass plate using thereof
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Application No.: US15559551Application Date: 2016-03-23
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Publication No.: US10465057B2Publication Date: 2019-11-05
- Inventor: Takeshi Aoki , Takashi Nishimoto
- Applicant: JSP CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JSP CORPORATION
- Current Assignee: JSP CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2015-064122 20150326
- International Application: PCT/JP2016/059168 WO 20160323
- International Announcement: WO2016/152910 WO 20160929
- Main IPC: B29C44/24
- IPC: B29C44/24 ; C08J9/228 ; B29C48/18 ; B32B5/20 ; B32B27/18 ; C03B40/033 ; C08L23/06

Abstract:
A method for producing a polyethylene-based resin laminated foam sheet according to the present invention is a method for producing a polyethylene-based resin laminated foam sheet 1 with thickness of 0.05 to 0.5 mm in which an anti-static layer is adhered by lamination on at least one surface of the foam layer, including: a step of performing coextrusion and foaming of a laminate which is obtained by combining and laminating, in a die 10, a melt resin composition 6 for forming a foam layer obtained by kneading a low density polyethylene A and a physical foaming agent and a melt resin composition 9 for forming an anti-static layer obtained by kneading a low density polyethylene B and an anti-static agent, wherein the anti-static agent is a polymeric anti-static agent C which has a melting point to allow a melting point difference in the range of from −10° C. to +10° C. compared to that of the low density polyethylene B and has a melt flow rate of 10 g/10 minutes or more.
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