GB1217917A - Improved surface on slip sleeves of plastics material - Google Patents

Improved surface on slip sleeves of plastics material

Info

Publication number
GB1217917A
GB1217917A GB35941/68A GB3594168A GB1217917A GB 1217917 A GB1217917 A GB 1217917A GB 35941/68 A GB35941/68 A GB 35941/68A GB 3594168 A GB3594168 A GB 3594168A GB 1217917 A GB1217917 A GB 1217917A
Authority
GB
United Kingdom
Prior art keywords
die
tubing
grooves
matt
july
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
GB35941/68A
Inventor
Graham Keith Burgess
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.)
TPT Ltd
Original Assignee
TPT 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 TPT Ltd filed Critical TPT Ltd
Priority to GB35941/68A priority Critical patent/GB1217917A/en
Publication of GB1217917A publication Critical patent/GB1217917A/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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • 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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/905—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using wet calibration, i.e. in a quenching tank
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,217,917. Extruding matt-surfaced tubing. T.P.T. Ltd. 2 July, 1969 [27 July, 1968], No. 35941/68. Heading B5A. The external surface of extruded plastics tubing is rendered smooth and matt by passage directly from the extrusion orifice into a metal, e.g. brass, bronze, or copper, sizing die B, the die having a continuous internal helical groove b, and pairs of concentric grooves b<SP>2</SP>, one of each pair being on the internal surface and the other on the external surface of the die, the grooves being interconnected by radial bores b<SP>3</SP>, see also Fig. 3 (not reproduced). Sizing die B is housed in a cooling chamber (D), Fig. 1 (not shown), and in operation a vacuum is applied thereto to withdraw air from the die via bores (b<SP>3</SP>) and maintain the tubing in contact with land portions (b<SP>1</SP>), Fig. 3 (not shown), between grooves b. The tubing may be of acrylonitrilebutadienes-styrene and is particularly intended for the production of slip sleeves for use in the manufacture of man-made fibres. It is stated that such sleeves when rejected may be ground and the material re-extruded.
GB35941/68A 1968-07-27 1968-07-27 Improved surface on slip sleeves of plastics material Expired GB1217917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB35941/68A GB1217917A (en) 1968-07-27 1968-07-27 Improved surface on slip sleeves of plastics material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35941/68A GB1217917A (en) 1968-07-27 1968-07-27 Improved surface on slip sleeves of plastics material

Publications (1)

Publication Number Publication Date
GB1217917A true GB1217917A (en) 1971-01-06

Family

ID=10383224

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35941/68A Expired GB1217917A (en) 1968-07-27 1968-07-27 Improved surface on slip sleeves of plastics material

Country Status (1)

Country Link
GB (1) GB1217917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105598A3 (en) * 2009-03-17 2010-12-02 Heinz Gross Method for calibrating a melted plastic strand

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010105598A3 (en) * 2009-03-17 2010-12-02 Heinz Gross Method for calibrating a melted plastic strand

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