JPS5628837A - Manufacturing of polyethylene foam - Google Patents

Manufacturing of polyethylene foam

Info

Publication number
JPS5628837A
JPS5628837A JP10462679A JP10462679A JPS5628837A JP S5628837 A JPS5628837 A JP S5628837A JP 10462679 A JP10462679 A JP 10462679A JP 10462679 A JP10462679 A JP 10462679A JP S5628837 A JPS5628837 A JP S5628837A
Authority
JP
Japan
Prior art keywords
density polyethylene
high density
polyethylene
melt index
mixed
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP10462679A
Other languages
Japanese (ja)
Other versions
JPS6055290B2 (en
Inventor
Osamu Takagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
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
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP54104626A priority Critical patent/JPS6055290B2/en
Publication of JPS5628837A publication Critical patent/JPS5628837A/en
Publication of JPS6055290B2 publication Critical patent/JPS6055290B2/en
Expired legal-status Critical Current

Links

Classifications

    • B29C47/92—

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To provide a polyethylene foam having a high rate of foaming and some continuous air bubbles by a method wherein a melt index, a mixing rate and an injection temperature of low density polyethylene and high density polyethylene are specified, volatile organic liquid is mixed with the polyethylene and injected. CONSTITUTION:To a resin mixed with a high density polyethylene having a melt index (MI) more than 10 and a low density polyethylene having a melt index (MI) less than 1 so as to cause a volume of the high density polyethylene to show 1.95/ (rho-0.9)wt%-3.5/(rho-0.9)wt% is mixed a volatile organic liquid having a boiling point (at normal pressure) lower than 100 deg.C under a high temperature and a high pressure. The mixture is cooled to such a temperature as higher than a melting point of the low density polyethylene and lower than a melting point of a high density polyethylene by 10 deg.C or more and thereafter injected into a low pressure zone. When MI is out of said range, a good foam may not be provided under such a condition as a mixing rate of a high density polyethylene is measured and noneven condition of the air bubbles is generated.
JP54104626A 1979-08-16 1979-08-16 Method for manufacturing polyethylene foam Expired JPS6055290B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54104626A JPS6055290B2 (en) 1979-08-16 1979-08-16 Method for manufacturing polyethylene foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54104626A JPS6055290B2 (en) 1979-08-16 1979-08-16 Method for manufacturing polyethylene foam

Publications (2)

Publication Number Publication Date
JPS5628837A true JPS5628837A (en) 1981-03-23
JPS6055290B2 JPS6055290B2 (en) 1985-12-04

Family

ID=14385642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54104626A Expired JPS6055290B2 (en) 1979-08-16 1979-08-16 Method for manufacturing polyethylene foam

Country Status (1)

Country Link
JP (1) JPS6055290B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140658A2 (en) * 1983-10-26 1985-05-08 Tokyo Electric Co. Ltd. Ink dot printer
US6028121A (en) * 1995-11-15 2000-02-22 Asahi Kasei Kogyo Kabushiki Kaisha Pre-expanded polyethylene beads and process for producing the same thereof
US6541533B2 (en) 2001-01-10 2003-04-01 Jsp Corporation Extruded polyolefin resin foam
JP2006219541A (en) * 2005-02-08 2006-08-24 Daicel Novafoam Ltd Resin composition for foam and foam using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140658A2 (en) * 1983-10-26 1985-05-08 Tokyo Electric Co. Ltd. Ink dot printer
US6028121A (en) * 1995-11-15 2000-02-22 Asahi Kasei Kogyo Kabushiki Kaisha Pre-expanded polyethylene beads and process for producing the same thereof
US6541533B2 (en) 2001-01-10 2003-04-01 Jsp Corporation Extruded polyolefin resin foam
JP2006219541A (en) * 2005-02-08 2006-08-24 Daicel Novafoam Ltd Resin composition for foam and foam using the same

Also Published As

Publication number Publication date
JPS6055290B2 (en) 1985-12-04

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