GB1479335A - Process and apparatus for extruding filled plastics compositions - Google Patents
Process and apparatus for extruding filled plastics compositionsInfo
- Publication number
- GB1479335A GB1479335A GB50376/74A GB5037674A GB1479335A GB 1479335 A GB1479335 A GB 1479335A GB 50376/74 A GB50376/74 A GB 50376/74A GB 5037674 A GB5037674 A GB 5037674A GB 1479335 A GB1479335 A GB 1479335A
- Authority
- GB
- United Kingdom
- Prior art keywords
- section
- die
- extruded
- polypropylene
- filler
- 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
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/87—Cooling
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/355—Conveyors for extruded articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/131—Curved articles
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1479335 Extruding filled thermoplastics MITSUBISHI PETROCHEMICAL CO Ltd 20 Nov 1974 [27 Nov 1973 29 Nov 1973] 50376/74 Heading B5A A section comprising thermoplastic resin and filler material is extruded from a die 4, Fig. 2, having cooling means at its downstream end which solidifies at least an external layer of the section prior to its issue from the die, and comprising passages 12 or 15 through which cooling medium is circulated at a temperature and flow rate which are independently controllable. Heating means, e.g. band heaters 17, are provided at the upstream end of the die. To minimize torsional stress, and consequent twisting of the section, arising from the torque of the extrusion screw 7, the material is delivered to the die through a channel 10 which is either narrowed by constriction as shown, or by opposed projecting bolts, to less than 0À8 of the area of a following part of the channel. The extrusion passage is preferably lined, or coated, with PTFE and is preferably more than 10 cm. long, e.g. more than 30 cm., and is preferably above 20 times the maximum thickness of the section. The coating medium may comprise water, air, or oil. A larger number of the passages 12 or 15 are arranged adjacent thicker parts of the section and the passages may differ in diameter, to further minimize twisting and longitudinal warping arising from differing flow rates of the material through the die across the section. Twisting and longitudinal warping of the section are also minimized by passage of the section issuing from the die, between a plurality of adjustably spaced apart roller pairs 19a and 19b, &c., as the section is reheated by infra-red heaters to a temperature of between 50 C. and the solidifying point of the resin, and preferably to 30 C. therebelow. The roller pairs may be aligned to give a convex curvature to the thicker side of the section, having a tendency to warp in the opposite curvature. The extruded section may comprise a door threshold, or a sash, in respect of which the Figs. 8 and 9 sections (not shown) are specifically referred to. The extruded section may be of the L-section extruded from the Fig. 3 die, or a T- or H-section, or of a channel section having inturned flanges and a base having a pair of longitudinal grooves, Figs. 4, 9 and 8 (not shown). The resin may comprise polyvinyl chloride, polyamide, A-B-S co-polymer high density polyethylene, or polypropylene, or various specified olefin co-polymers. The filler is present in 10-80%, and preferably 20-70% by weight, and may comprise an organic filler such as wood powder, bagasse or chaf, and/or an inorganic filler such as Al(OH) 3 , talc, clay, and calcium carbonate. The material is fed to the extruder as a powder or pellets, having less than 2% volatile matter. The examples relate to the extrusion specified weight preparations of: (1), polypropylene and wood powder; (2), a graft co-polymer of polypropylene with maleic anhydride, polypropylene, wood powder, and calcium carbonate, extruded to the Fig. 8 section. Physical and thermal expansion properties of the extruded section are stated.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48132203A JPS5083405A (en) | 1973-11-27 | 1973-11-27 | |
JP13641773U JPS5079776U (en) | 1973-11-29 | 1973-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1479335A true GB1479335A (en) | 1977-07-13 |
Family
ID=26466837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50376/74A Expired GB1479335A (en) | 1973-11-27 | 1974-11-20 | Process and apparatus for extruding filled plastics compositions |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2455639A1 (en) |
FR (1) | FR2252206A1 (en) |
GB (1) | GB1479335A (en) |
SE (1) | SE7414508L (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4380522A (en) | 1978-08-11 | 1983-04-19 | Solvay & Cie. | Process for the manufacture of articles from composition comprising modified polyolefines and cellulosic fibres |
EP0745470A3 (en) * | 1995-05-27 | 1997-07-09 | Caprano & Brunnhofer | Extruded polyolefin profile |
GB2286360B (en) * | 1994-02-10 | 1998-06-10 | Ain Engineering Kk | Synthetic wood meal, method and apparatus for manufacturing the same |
WO2008009149A1 (en) * | 2006-07-21 | 2008-01-24 | Quadrant Epp Ag | Production of uhmwpe panels |
EP1908568A1 (en) * | 2006-10-02 | 2008-04-09 | Quadrant Epp Ag | Production of UHMWPE panels |
US7736579B2 (en) | 2006-07-21 | 2010-06-15 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7758797B2 (en) | 2006-07-21 | 2010-07-20 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7758796B2 (en) | 2006-07-21 | 2010-07-20 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7803450B2 (en) | 2006-07-21 | 2010-09-28 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
CN101967297A (en) * | 2010-10-29 | 2011-02-09 | 曾广胜 | Bagasse polypropylene composite material and preparation method thereof |
CN114279125A (en) * | 2021-12-28 | 2022-04-05 | 江苏丰尚智能科技有限公司 | Cooling system for extruding artificial meat and design method thereof |
CN118181704A (en) * | 2024-05-13 | 2024-06-14 | 华南理工大学 | Multi-cavity cold extrusion die |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5320794A (en) * | 1992-11-23 | 1994-06-14 | Delaware Capital Formation, Inc. | Apparatus for and method of manufacture of a textured vinyl post |
-
1974
- 1974-11-09 SE SE7414508A patent/SE7414508L/xx unknown
- 1974-11-20 GB GB50376/74A patent/GB1479335A/en not_active Expired
- 1974-11-25 FR FR7438531A patent/FR2252206A1/fr not_active Withdrawn
- 1974-11-25 DE DE19742455639 patent/DE2455639A1/en active Pending
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4380522A (en) | 1978-08-11 | 1983-04-19 | Solvay & Cie. | Process for the manufacture of articles from composition comprising modified polyolefines and cellulosic fibres |
GB2286360B (en) * | 1994-02-10 | 1998-06-10 | Ain Engineering Kk | Synthetic wood meal, method and apparatus for manufacturing the same |
EP0745470A3 (en) * | 1995-05-27 | 1997-07-09 | Caprano & Brunnhofer | Extruded polyolefin profile |
US7980839B2 (en) | 2006-07-21 | 2011-07-19 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
WO2008009149A1 (en) * | 2006-07-21 | 2008-01-24 | Quadrant Epp Ag | Production of uhmwpe panels |
US7736579B2 (en) | 2006-07-21 | 2010-06-15 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7758797B2 (en) | 2006-07-21 | 2010-07-20 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7758796B2 (en) | 2006-07-21 | 2010-07-20 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7803450B2 (en) | 2006-07-21 | 2010-09-28 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
US7981349B2 (en) | 2006-07-21 | 2011-07-19 | Quadrant Epp Ag | Production of UHMWPE sheet materials |
EP1908568A1 (en) * | 2006-10-02 | 2008-04-09 | Quadrant Epp Ag | Production of UHMWPE panels |
CN101967297A (en) * | 2010-10-29 | 2011-02-09 | 曾广胜 | Bagasse polypropylene composite material and preparation method thereof |
CN101967297B (en) * | 2010-10-29 | 2012-07-04 | 曾广胜 | Bagasse polypropylene composite material and preparation method thereof |
CN114279125A (en) * | 2021-12-28 | 2022-04-05 | 江苏丰尚智能科技有限公司 | Cooling system for extruding artificial meat and design method thereof |
CN114279125B (en) * | 2021-12-28 | 2023-10-27 | 江苏丰尚智能科技有限公司 | Cooling system for artificial meat extrusion and design method thereof |
CN118181704A (en) * | 2024-05-13 | 2024-06-14 | 华南理工大学 | Multi-cavity cold extrusion die |
Also Published As
Publication number | Publication date |
---|---|
SE7414508L (en) | 1975-05-28 |
DE2455639A1 (en) | 1975-05-28 |
FR2252206A1 (en) | 1975-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |