JPS6429444A - Production of pre-expanded noncrosslinked linear low-density polyethylene particle - Google Patents
Production of pre-expanded noncrosslinked linear low-density polyethylene particleInfo
- 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
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.
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)
| 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 |
-
1987
- 1987-07-23 JP JP18411487A patent/JPH0781028B2/en not_active Expired - Lifetime
Cited By (1)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5234640A (en) | Process of producing thermoplastic polyester series resin foamed | |
| JPS5790027A (en) | Prefoamed polypropylene resin particle and its production | |
| GB971726A (en) | Porous product and method of manufacturing | |
| JPS5547335A (en) | Manufacturing method of fiber reinforced metal based composite material | |
| US3331899A (en) | Process and apparatus for making shaped cellular articles from expandable thermoplastic resins | |
| US2795008A (en) | Method of producing cellular resin bodies | |
| EP0068467A1 (en) | Polypropylene foamed molded articles and process for production thereof | |
| JPS5294487A (en) | Production of compositions containing enzyme or microbial cells | |
| JPS6429444A (en) | Production of pre-expanded noncrosslinked linear low-density polyethylene particle | |
| KR830001145A (en) | How to heat strengthen glass | |
| US4360484A (en) | Pressurization and storage of thermoplastic resin foams prior to secondary expansion | |
| ES408867A1 (en) | Foamable plastisol composition containing a foam stabilizer,and foamed composition obtained therefrom | |
| JPS5757628A (en) | Manufacture of blaxially rolled film | |
| JPS5646735A (en) | Freparation of polyolefin series resin foamed molding body | |
| CA1266754C (en) | Process for pre-expanding thermoplastic resin particles | |
| JPS57191029A (en) | Manufacture of bridged polyolefinic foamed material | |
| JPS56151537A (en) | Manufacture of expanded form utilizing crosslinking polyethylene expandable particle | |
| JPS55111215A (en) | Continuous current treatment for polyester chip | |
| ES8200382A1 (en) | Process for preparing pulverulent ethylene polymers | |
| JPS56116277A (en) | Manufacture of gas-separating plate for fuel cell | |
| JPS55125129A (en) | Production of foamable thermoplastic polymer particle | |
| JPS57171722A (en) | Production of carbon fiber | |
| EP0377186A3 (en) | Process for preparing pre-expanded particles of polyolefin resin | |
| JPS5659848A (en) | Glass fiber-reinforced polyolefin sheet for press molding | |
| JPS5637121A (en) | Production of porous fiber-reinforced resin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |