TW324017B - Process of producing ethylene polymer foam structure - Google Patents

Process of producing ethylene polymer foam structure

Info

Publication number
TW324017B
TW324017B TW083102749A TW83102749A TW324017B TW 324017 B TW324017 B TW 324017B TW 083102749 A TW083102749 A TW 083102749A TW 83102749 A TW83102749 A TW 83102749A TW 324017 B TW324017 B TW 324017B
Authority
TW
Taiwan
Prior art keywords
ethylene polymer
foam structure
polymer material
molten
polymer foam
Prior art date
Application number
TW083102749A
Other languages
Chinese (zh)
Inventor
P Park Chung
C Stevens James
W Knight George
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/054,330 external-priority patent/US5340840A/en
Priority claimed from US08/054,329 external-priority patent/US5288762A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of TW324017B publication Critical patent/TW324017B/en

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Abstract

A process of producing un-crosslinked ethylene polymer foam structure, which comprises: (a) heating an ethylene polymer material to form a molten polymer material; (b) adding a foaming agent into the molten polymer material while increasing the pressure; and (c) expanding the foamable gel to form a foam structure while decreasing the pressure, in which the process is characterized in that the ethylene polymer material comprises a substantially linear ethylene polymer which has: (i) molten flowrate I10/I2≧5.63; (ii) molecular weight distribution, Mw/Mn, defined by the following formula Mw/Mn≰(I10/I2)-4.63; and (iii) the critical shearing rate at the beginning of surface melting breakage being at least 50% larger than the critical shearing rate at the beginning of surface melting breakage of a linear polyolefin polymer with approximately same I2 and Mw/Mn.
TW083102749A 1993-03-18 1994-03-30 Process of producing ethylene polymer foam structure TW324017B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US3291793A 1993-03-18 1993-03-18
US08/054,330 US5340840A (en) 1993-03-18 1993-04-28 Foam structures of ethylenic polymer material having enhanced toughness and elasticity and process for making
US08/054,329 US5288762A (en) 1993-04-28 1993-04-28 Cross-linked ethylenic polymer foam structures and process for making
US14871193A 1993-11-08 1993-11-08

Publications (1)

Publication Number Publication Date
TW324017B true TW324017B (en) 1998-01-01

Family

ID=58262046

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083102749A TW324017B (en) 1993-03-18 1994-03-30 Process of producing ethylene polymer foam structure

Country Status (1)

Country Link
TW (1) TW324017B (en)

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