GB853802A - Refining thermoplastic resins - Google Patents
Refining thermoplastic resinsInfo
- Publication number
- GB853802A GB853802A GB7020/58A GB702058A GB853802A GB 853802 A GB853802 A GB 853802A GB 7020/58 A GB7020/58 A GB 7020/58A GB 702058 A GB702058 A GB 702058A GB 853802 A GB853802 A GB 853802A
- Authority
- GB
- United Kingdom
- Prior art keywords
- orifice
- degrees
- thermoplastic resins
- less
- final
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/20—Injection nozzles
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
Abstract
<PICT:0853802/IV(a)/1> Thermoplastic synthetic resins, e.g. polyethylene, polystyrene toughened with natural or styrene-butadiene rubber, nylon or polyvinyl chloride, are refined from an incompatible gel fraction by passing in a softened state through a circular sharp-edged orifice. The faces of the orifice Fig. 2 (6), are inclined to each other at an angle of less than 90 degrees, preferably 60-65 degrees, and the diameter is preferably less than 0,04. The orifice may be incorporated in the barrel of the extruder (2), being screwed in the inner end of a sleeve (4) before the final passage (3), and is preferably positioned a short distance before the final extrusion point. The process may also be used to improve the dispersion of pigments, fillers or modifying agents in the resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7020/58A GB853802A (en) | 1958-03-05 | 1958-03-05 | Refining thermoplastic resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7020/58A GB853802A (en) | 1958-03-05 | 1958-03-05 | Refining thermoplastic resins |
Publications (1)
Publication Number | Publication Date |
---|---|
GB853802A true GB853802A (en) | 1960-11-09 |
Family
ID=9825118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7020/58A Expired GB853802A (en) | 1958-03-05 | 1958-03-05 | Refining thermoplastic resins |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB853802A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173163A (en) * | 1963-03-29 | 1965-03-16 | E B & A C Whiting Company | Flagged brush bristles |
EP1749649A3 (en) * | 2005-08-04 | 2007-10-24 | The Goodyear Tire & Rubber Company | A method for forming an elastomeric component |
US7780809B2 (en) | 2005-08-04 | 2010-08-24 | The Goodyear Tire & Rubber Company | Method for forming elastomeric tire component and a tire |
-
1958
- 1958-03-05 GB GB7020/58A patent/GB853802A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3173163A (en) * | 1963-03-29 | 1965-03-16 | E B & A C Whiting Company | Flagged brush bristles |
EP1749649A3 (en) * | 2005-08-04 | 2007-10-24 | The Goodyear Tire & Rubber Company | A method for forming an elastomeric component |
US7780809B2 (en) | 2005-08-04 | 2010-08-24 | The Goodyear Tire & Rubber Company | Method for forming elastomeric tire component and a tire |
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