GB1518847A - Tough board of thermoplastic resin foam and method of manufacturing the same - Google Patents
Tough board of thermoplastic resin foam and method of manufacturing the sameInfo
- Publication number
- GB1518847A GB1518847A GB42351/75A GB4235175A GB1518847A GB 1518847 A GB1518847 A GB 1518847A GB 42351/75 A GB42351/75 A GB 42351/75A GB 4235175 A GB4235175 A GB 4235175A GB 1518847 A GB1518847 A GB 1518847A
- Authority
- GB
- United Kingdom
- Prior art keywords
- board
- foamed
- layer
- thickness
- extruded
- 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
- 239000006260 foam Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 229920005992 thermoplastic resin Polymers 0.000 title 1
- 238000001816 cooling Methods 0.000 abstract 3
- 229920001169 thermoplastic Polymers 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 238000001125 extrusion Methods 0.000 abstract 2
- 239000004088 foaming agent Substances 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000002667 nucleating agent Substances 0.000 abstract 2
- -1 polyethylene Polymers 0.000 abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229920001155 polypropylene Polymers 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 abstract 1
- 229940029284 trichlorofluoromethane Drugs 0.000 abstract 1
Classifications
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/22—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
- B29C44/352—Means for giving the foam different characteristics in different directions
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
- B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
-
- 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
- C08J9/34—Chemical features in the manufacture of articles consisting of a foamed macromolecular core and a macromolecular surface layer having a higher density than the core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Laminated Bodies (AREA)
Abstract
1518847 Extruding foamed plastics FURUKAWA ELECTRIC CO Ltd 15 Oct 1975 [22 Oct 1974 20 Nov 1974] 42351/75 Heading B5A [Also in Division C3] An extruded thermoplastic polymer board of thickness not more than 200 mm., which comprises opposed non-foamed skin layers of thickness 0.5 to 3 mm., a non-foamed layer of thickness 0À1 to 2 mm. intermediate of the skin layers and a foamed layer separating the intermediate layer from each skin layer, each foamed layer being composed of cells which are elongated between a skin layer and the intermediate layer, the volume occupied by cells having an average diameter (as defined) of more than 5 mm. being more than 50% of the volume of the board (Fig. 1) is made by (a) extruding into the atmosphere a mixture comprising 100 parts by weight of the thermoplastic polymer, 2 to 20 parts by weight of a volatile foaming agent which is soluble in the polymer at the extrusion temperature, and 0À1 to 3 parts by weight of a nucleating agent so as to form a board, the extrusion temperature being between the softening or melting point of the mixture and a temperature 30 C. higher than the softening or melting point of the thermoplastic polymer; (b) rapidly cooling opposed surfaces of the extruded board so as to form the skin layers; and (c) slowly cooling the board substantially.in the absence of shearing stress and at a rate of cooling which allows the material to foam to form the foamed layers, the opposed surfaces of the board being restrained during step (c) by expansion restricting means such that the thickness of the resulting board is 50 to 95% of the theoretical maximum thickness. In Fig. 3, board 7 is extruded from die 6 and cooled rapidly by water-cooled pipe 8 thereby forming skin layers 4, expansion is then controlled by restricting means 9 in which heat medium can be passed thereby forming cells 2 and higher density layer 3 in foamed board 1 which is taken up by roll 10. In Examples 1-4 polyethylene and polypropylene were extruded as above into foamed boards using calcium carbonate as nucleating agent and trichlorofluoromethane as foaming agent. The boards were joined together by compression of heated facing sides in Example 5 or by mechanical arrangement of boards having a depression and projection respectively (Fig. 2, not shown) in Example 3.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49121600A JPS5759057B2 (en) | 1974-10-22 | 1974-10-22 | |
| JP1974140268U JPS5745152Y2 (en) | 1974-11-20 | 1974-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1518847A true GB1518847A (en) | 1978-07-26 |
Family
ID=26458911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42351/75A Expired GB1518847A (en) | 1974-10-22 | 1975-10-15 | Tough board of thermoplastic resin foam and method of manufacturing the same |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU498581B2 (en) |
| DE (1) | DE2547082C3 (en) |
| FI (1) | FI63887C (en) |
| FR (1) | FR2289321A1 (en) |
| GB (1) | GB1518847A (en) |
| IT (1) | IT1043509B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256754A3 (en) * | 1986-08-04 | 1989-03-15 | The Dow Chemical Company | Process for producing styrene resin foam |
| WO2017010871A1 (en) * | 2015-07-10 | 2017-01-19 | Fits Holding B.V. | Method of manufacturing a sandwich panel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020131363A1 (en) | 2020-10-13 | 2022-04-14 | Aco Ahlmann Se & Co. Kg | Construction product and process |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2740157A (en) * | 1951-12-07 | 1956-04-03 | Dow Chemical Co | Method and apparatus for shaping plastic foams |
| US2945261A (en) * | 1956-05-31 | 1960-07-19 | Monsanto Chemicals | Preparation of foamed thermoplastic resin forms having wrinkle-free profile surfaces |
| US3374300A (en) * | 1963-10-12 | 1968-03-19 | Azuma Kimikazu | Process and apparatus for the continuous production of polystyrenic foam materials |
| SE313180B (en) * | 1964-06-02 | 1969-08-04 | Monsanto Chemicals | |
| NL6514022A (en) * | 1965-10-29 | 1967-05-02 | ||
| BE757054R (en) * | 1969-10-06 | 1971-04-05 | Monsanto Chemicals | IMPROVEMENTS WITH FOAMS |
| JPS4848562A (en) * | 1971-10-23 | 1973-07-10 |
-
1975
- 1975-10-15 GB GB42351/75A patent/GB1518847A/en not_active Expired
- 1975-10-20 AU AU85866/75A patent/AU498581B2/en not_active Expired
- 1975-10-21 FI FI752939A patent/FI63887C/en not_active IP Right Cessation
- 1975-10-21 DE DE2547082A patent/DE2547082C3/en not_active Expired
- 1975-10-21 IT IT7528471A patent/IT1043509B/en active
- 1975-10-22 FR FR7532372A patent/FR2289321A1/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256754A3 (en) * | 1986-08-04 | 1989-03-15 | The Dow Chemical Company | Process for producing styrene resin foam |
| WO2017010871A1 (en) * | 2015-07-10 | 2017-01-19 | Fits Holding B.V. | Method of manufacturing a sandwich panel |
| NL2015138B1 (en) * | 2015-07-10 | 2017-02-01 | Fits Holding Bv | Method of manufacturing a sandwich panel. |
| CN107848166A (en) * | 2015-07-10 | 2018-03-27 | 菲茨控股公司 | The method for manufacturing sandwich plate |
| EA034489B1 (en) * | 2015-07-10 | 2020-02-13 | Фитс Холдинг Б.В. | METHOD FOR PRODUCING SANDWICH PANELS |
| CN107848166B (en) * | 2015-07-10 | 2020-04-24 | 菲茨控股公司 | Method for manufacturing a sandwich panel |
| US11524431B2 (en) | 2015-07-10 | 2022-12-13 | Fits Holding B.V. | Method of manufacturing sandwich panel |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1043509B (en) | 1980-02-29 |
| FR2289321B1 (en) | 1978-04-07 |
| FI63887B (en) | 1983-05-31 |
| DE2547082A1 (en) | 1976-05-06 |
| FI752939A7 (en) | 1976-04-23 |
| FR2289321A1 (en) | 1976-05-28 |
| AU498581B2 (en) | 1979-03-15 |
| AU8586675A (en) | 1977-04-28 |
| FI63887C (en) | 1983-09-12 |
| DE2547082C3 (en) | 1982-03-11 |
| DE2547082B2 (en) | 1978-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |