JPS56150521A - Manufacture of foamed polyethylene resin molding - Google Patents
Manufacture of foamed polyethylene resin moldingInfo
- Publication number
- JPS56150521A JPS56150521A JP5500080A JP5500080A JPS56150521A JP S56150521 A JPS56150521 A JP S56150521A JP 5500080 A JP5500080 A JP 5500080A JP 5500080 A JP5500080 A JP 5500080A JP S56150521 A JPS56150521 A JP S56150521A
- Authority
- JP
- Japan
- Prior art keywords
- polyethylene resin
- granules
- prefoamed
- foamed polyethylene
- xrho
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/228—Forming foamed products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
- B29C67/205—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising surface fusion, and bonding of particles to form voids, e.g. sintering
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/16—Making expandable particles
- C08J9/18—Making expandable particles by impregnating polymer particles with the blowing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
- C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:To provide a foamed polyethylene molding of a superior quality in the longtime dimensional stability, smoothness and shrink mark, by charging prefoamed granules of bridged polyethylene resin having a specific density and a specific Vicat softening point by means of gas compression and foam-molding the granules by heating. CONSTITUTION:Bridged prefoamed granules are prepared by using a polyethylene resin having a density rho of 0.925-0.940g/cm<3> and a Vicat softening point Ts represented by the absolute temperature system and satisfying a relationship: 14/15X 10<3>Xrho-1483/3<=Ts<=13/15X10<3>Xrho-1274/3. The prefoamed granules are supplied into a mold and compressed by a gas pressure to a volume as great as 82-98% of the original volume thereof, and heated to foam. This method eliminates the treatment for providing a foaming capability.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5500080A JPS56150521A (en) | 1980-04-25 | 1980-04-25 | Manufacture of foamed polyethylene resin molding |
CA000366174A CA1147100A (en) | 1979-12-10 | 1980-12-04 | Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof |
US06/213,643 US4366263A (en) | 1979-12-10 | 1980-12-05 | Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof |
DE8080107757T DE3072109D1 (en) | 1979-12-10 | 1980-12-09 | An expanded cross-linked polyethylene particle and methods to produce molded products thereof |
EP80107757A EP0032557B1 (en) | 1979-12-10 | 1980-12-09 | An expanded cross-linked polyethylene particle and methods to produce molded products thereof |
HK284/89A HK28489A (en) | 1979-12-10 | 1989-04-06 | An expanded cross-linked polyethylene particle and methods to produce molded products thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5500080A JPS56150521A (en) | 1980-04-25 | 1980-04-25 | Manufacture of foamed polyethylene resin molding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56150521A true JPS56150521A (en) | 1981-11-21 |
Family
ID=12986377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5500080A Pending JPS56150521A (en) | 1979-12-10 | 1980-04-25 | Manufacture of foamed polyethylene resin molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56150521A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63183832A (en) * | 1986-09-16 | 1988-07-29 | Kanegafuchi Chem Ind Co Ltd | Manufacture of polypropylene resin in-mold foam molding |
-
1980
- 1980-04-25 JP JP5500080A patent/JPS56150521A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63183832A (en) * | 1986-09-16 | 1988-07-29 | Kanegafuchi Chem Ind Co Ltd | Manufacture of polypropylene resin in-mold foam molding |
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