GB829152A - Apparatus and process for pelleting thermoplastic materials - Google Patents

Apparatus and process for pelleting thermoplastic materials

Info

Publication number
GB829152A
GB829152A GB23406/57A GB2340657A GB829152A GB 829152 A GB829152 A GB 829152A GB 23406/57 A GB23406/57 A GB 23406/57A GB 2340657 A GB2340657 A GB 2340657A GB 829152 A GB829152 A GB 829152A
Authority
GB
United Kingdom
Prior art keywords
pelleting
fluid
inlet
temperature
water
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
GB23406/57A
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.)
PPG Architectural Coatings Canada Inc
Original Assignee
Canadian Industries 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 Canadian Industries Ltd filed Critical Canadian Industries Ltd
Publication of GB829152A publication Critical patent/GB829152A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

829,152. Pelleting plastic materials. CANADIAN INDUSTRIES Ltd. July 24, 1957 [Aug. 4, 1956], No. 23406/57. Class 87(2). An apparatus for pelleting thermoplastic materials comprises a hollow frusto-conical die 1 having a plurality of extrusion orifices 2 on its internal face, at least one knife 17 arranged to revolve in a plane parallel to the internal face to sever the extruded material and means to conduct fluid through an internal core 18 to carry away the severed pellets. The die 1 is formed by inner and outer members 7, 8 with an insulating layer 9 between, has a jacket 3 with an inlet 5 for the plastic material, is surrounded by a heating jacket 4, and has the extrusion orifices 2, in four rows, staggered to allow the cut pellets to rise freely to a fluid outlet 26. The knives 17 on the core 18 are mounted on a shaft 20 which is rotatably sealed in an inlet 15 for the fluid which may be water at a pressure and temperature of ten to twenty p.s.i. and 85‹F to 140‹F. The plastic material may be polythene at a temperature of from 275‹F to 485‹F. The water may contain a corrosion inhibitor, e.g. sodium nitrite. Specification 774,681 is referred to.
GB23406/57A 1956-08-04 1957-07-24 Apparatus and process for pelleting thermoplastic materials Expired GB829152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA829152X 1956-08-04

Publications (1)

Publication Number Publication Date
GB829152A true GB829152A (en) 1960-02-24

Family

ID=4172615

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23406/57A Expired GB829152A (en) 1956-08-04 1957-07-24 Apparatus and process for pelleting thermoplastic materials

Country Status (1)

Country Link
GB (1) GB829152A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2177646A1 (en) * 1972-03-30 1973-11-09 Welding Engineers Cutting head for thermoplastic pellets - applied to extruded material
FR2318719A1 (en) * 1975-07-25 1977-02-18 Japan Steel Works Ltd SUBMERSIBLE CUTTING ELEMENT PASTILER

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2177646A1 (en) * 1972-03-30 1973-11-09 Welding Engineers Cutting head for thermoplastic pellets - applied to extruded material
FR2318719A1 (en) * 1975-07-25 1977-02-18 Japan Steel Works Ltd SUBMERSIBLE CUTTING ELEMENT PASTILER

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