JPS6429444A - Production of pre-expanded noncrosslinked linear low-density polyethylene particle - Google Patents

Production of pre-expanded noncrosslinked linear low-density polyethylene particle

Info

Publication number
JPS6429444A
JPS6429444A JP18411487A JP18411487A JPS6429444A JP S6429444 A JPS6429444 A JP S6429444A JP 18411487 A JP18411487 A JP 18411487A JP 18411487 A JP18411487 A JP 18411487A JP S6429444 A JPS6429444 A JP S6429444A
Authority
JP
Japan
Prior art keywords
temperature
density polyethylene
linear low
resin particles
expanded
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
JP18411487A
Other languages
Japanese (ja)
Other versions
JPH0781028B2 (en
Inventor
Hideki Kuwabara
Masahiro Hashiba
Masato Naito
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.)
JSP Corp
Original Assignee
JSP Corp
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 JSP Corp filed Critical JSP Corp
Priority to JP18411487A priority Critical patent/JPH0781028B2/en
Publication of JPS6429444A publication Critical patent/JPS6429444A/en
Publication of JPH0781028B2 publication Critical patent/JPH0781028B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To obtain pre-expanded particles stabilized in cell population and expansion ratio, by using resin particles obtained by subjecting a specified heat hysteresis to a noncrosslinked linear low-density polyethylene as a starting material. CONSTITUTION:Resin particles obtained by heating a noncrosslinked linear low-density polyethylene to a temperature >= its melting point and quenching it in an atmosphere at a temperature equal to its crystallization temperature -30 deg.C or below are used as a starting material. These resin particles and a volatile blowing agent are dispersed in a dispersing medium in a pressure vessel, heated to a temperature ranging from the m.p. -20 deg.C to the m.p. -10 deg.C without heating to a temperature above the one at which the melting of the resin is completed to impregnate the resin particles with the blowing agent. The impregnated particles are expanded by releasing them and the dispersing medium from the vessel into a low-pressure atmosphere at a temperature within said temperature range.
JP18411487A 1987-07-23 1987-07-23 Method for producing non-crosslinked linear low density polyethylene pre-expanded particles Expired - Lifetime JPH0781028B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18411487A JPH0781028B2 (en) 1987-07-23 1987-07-23 Method for producing non-crosslinked linear low density polyethylene pre-expanded particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18411487A JPH0781028B2 (en) 1987-07-23 1987-07-23 Method for producing non-crosslinked linear low density polyethylene pre-expanded particles

Publications (2)

Publication Number Publication Date
JPS6429444A true JPS6429444A (en) 1989-01-31
JPH0781028B2 JPH0781028B2 (en) 1995-08-30

Family

ID=16147629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18411487A Expired - Lifetime JPH0781028B2 (en) 1987-07-23 1987-07-23 Method for producing non-crosslinked linear low density polyethylene pre-expanded particles

Country Status (1)

Country Link
JP (1) JPH0781028B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275558B1 (en) 1997-05-06 2001-08-14 Nec Corporation Circuit and method for arbitrarily shifting M-sequence

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6275558B1 (en) 1997-05-06 2001-08-14 Nec Corporation Circuit and method for arbitrarily shifting M-sequence

Also Published As

Publication number Publication date
JPH0781028B2 (en) 1995-08-30

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