GB853802A - Refining thermoplastic resins - Google Patents

Refining thermoplastic resins

Info

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
Application number
GB7020/58A
Inventor
Sidney Douglas Eagleton
Stanley John Skinner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to GB7020/58A priority Critical patent/GB853802A/en
Publication of GB853802A publication Critical patent/GB853802A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (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)
  • Processes Of Treating Macromolecular Substances (AREA)

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.
GB7020/58A 1958-03-05 1958-03-05 Refining thermoplastic resins Expired GB853802A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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