GB1196036A - Production of Expanded Olefin Polymer Moldings. - Google Patents
Production of Expanded Olefin Polymer Moldings.Info
- Publication number
- GB1196036A GB1196036A GB5127967A GB5127967A GB1196036A GB 1196036 A GB1196036 A GB 1196036A GB 5127967 A GB5127967 A GB 5127967A GB 5127967 A GB5127967 A GB 5127967A GB 1196036 A GB1196036 A GB 1196036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- particles
- mould
- mouldings
- expanded
- heated
- 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.)
- Expired
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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J9/232—Forming foamed products by sintering expandable particles
-
- 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
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
1,196,036. Moulding expanded polyolefin. BADISCHE ANILIN- & SODA-FABRIK A.G. 10 Nov., 1967 [12 Nov., 1966], No. 51279/67. Heading B5A. [Also in Division C3] Expanded mouldings of olefin polymers are moulded from particles of a closed cell expanded polymer of an olefin, having two or three carbon atoms, which are heated to a surface temperature above the crystallite melting point, and fused together under pressure in a closed mould, whereby the heat supplied is not more than 50% of the heat required to melt the particles of olefin polymers and the particles are compressed by 5 to 70% of their original volume. The particles are heated to surface temperatures preferably of 5% to 25‹ C. above the crystallite melting point, prior to fusion together. Heat is supplied by gaseous heating media, e.g. air or steam or mixtures thereof, or fluid, e.g. water, or water and glycerol. The particles are heated in the mould or in separate equipment before introduction to the mould, e.g. by hot air blowing of the particles into the mould. The mould is preferably perforated or provided with nozzles whereby gases are vented and moulding pressure is preferably applied by relative movement of a pair of opposite mould walls. Alternatively, continuous mouldings may be produced employing four co-operating conveyer belts or a pair of opposed belts with stationary side guides, and the particles are preferably compressed by the belts prior to fusion. A gaseous heating medium is preferably introduced at one side and vented at another side or the base of the mould, or heating probes may be used. The mouldings may be postheated to above the olefin melting point to densify the surface thereof. The mouldings may be produced for upholstery, floats, packaging components, thermal and acoustic insulation, shock absorbing inserts, floating intermediate floorings, decorations, toys, seals, laminates. Mouldings may be cut into films or sheeting by a hot wire. Examples are given of moulding polyethylene particles, a mixture of 80% (by weight) high pressure polyethylene with 20% polyisobutylene, and a mixture of 70% (by weight) polypropylene with 30% polyisobutylene. The olefin polymers, which preferably have an X-ray crystallinity of more than 25% at 25‹ C., may be homopolymers of ethylene or propylene preferably having 2-4% weight fractions soluble in n-heptane, or may comprise copolymers thereof (see Division C3) and should be free from cross-linked molecules. The diameter of the particles is preferably 3-40 mm. and the particle average cell diameter is 0À1 to 0À01 mm. The particles may comprise comminuted expanded extrudate, or a heated mixture of polymer and expanding agents which decompose to gaseous products. The particles may also contain flame proofiing agents, dyes, lubricants, or other polymers, e.g. polyisobutylene, or fillers such as wood fibres or other porous materials or thermoplastics fibres. Reinforcements of fabric or netting of thermoplastics may also be incorporated in the mouldings. The particles may have applied to the surface thereof high-boiling aliphatic, cycloaliphatic or aromatic hydrocarbons, e.g. paraffin oil, xylenes, toluene or benzene, in an amount of 0À1 to 0À5% (volume) whereby improved particle fusion is obtained.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB0089806 | 1966-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1196036A true GB1196036A (en) | 1970-06-24 |
Family
ID=6984954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5127967A Expired GB1196036A (en) | 1966-11-12 | 1967-11-10 | Production of Expanded Olefin Polymer Moldings. |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT275884B (en) |
BE (1) | BE706339A (en) |
CH (1) | CH463093A (en) |
DE (1) | DE1629310A1 (en) |
FR (1) | FR1543854A (en) |
GB (1) | GB1196036A (en) |
NL (1) | NL6715120A (en) |
SE (1) | SE338851B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989000918A2 (en) * | 1987-07-29 | 1989-02-09 | Massachusetts Institute Of Technology | A method of producing microcellular foams and microcellular foams of semi-crystalline polymeric materials |
US5160674A (en) * | 1987-07-29 | 1992-11-03 | Massachusetts Institute Of Technology | Microcellular foams of semi-crystaline polymeric materials |
CN113337137A (en) * | 2021-05-24 | 2021-09-03 | 山东千森木业集团有限公司 | Formaldehyde-free flame-retardant plate and production method thereof |
-
1966
- 1966-11-12 DE DE19661629310 patent/DE1629310A1/en active Pending
-
1967
- 1967-10-26 CH CH1501267A patent/CH463093A/en unknown
- 1967-11-07 NL NL6715120A patent/NL6715120A/xx unknown
- 1967-11-09 FR FR127599A patent/FR1543854A/en not_active Expired
- 1967-11-10 BE BE706339D patent/BE706339A/xx unknown
- 1967-11-10 GB GB5127967A patent/GB1196036A/en not_active Expired
- 1967-11-10 AT AT1016067A patent/AT275884B/en active
- 1967-11-13 SE SE1553967A patent/SE338851B/xx unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989000918A2 (en) * | 1987-07-29 | 1989-02-09 | Massachusetts Institute Of Technology | A method of producing microcellular foams and microcellular foams of semi-crystalline polymeric materials |
WO1989000918A3 (en) * | 1987-07-29 | 1989-03-09 | Massachusetts Inst Technology | A method of producing microcellular foams and microcellular foams of semi-crystalline polymeric materials |
US5160674A (en) * | 1987-07-29 | 1992-11-03 | Massachusetts Institute Of Technology | Microcellular foams of semi-crystaline polymeric materials |
CN113337137A (en) * | 2021-05-24 | 2021-09-03 | 山东千森木业集团有限公司 | Formaldehyde-free flame-retardant plate and production method thereof |
Also Published As
Publication number | Publication date |
---|---|
NL6715120A (en) | 1968-05-13 |
FR1543854A (en) | 1968-10-25 |
DE1629310A1 (en) | 1971-01-21 |
CH463093A (en) | 1968-09-30 |
BE706339A (en) | 1968-05-10 |
SE338851B (en) | 1971-09-20 |
AT275884B (en) | 1969-11-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |