GB1214631A - Improvements in or relating to the manufacture of strip material - Google Patents

Improvements in or relating to the manufacture of strip material

Info

Publication number
GB1214631A
GB1214631A GB21727/67A GB2172767A GB1214631A GB 1214631 A GB1214631 A GB 1214631A GB 21727/67 A GB21727/67 A GB 21727/67A GB 2172767 A GB2172767 A GB 2172767A GB 1214631 A GB1214631 A GB 1214631A
Authority
GB
United Kingdom
Prior art keywords
limb
die
obturator
bath
convoluted
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
GB21727/67A
Inventor
Ronald Horace Shrimpton
Roger Stewart Wharton
Vernon Wilfred Walmesley
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.)
Dunlop Co Ltd
Original Assignee
Dunlop Co 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 Dunlop Co Ltd filed Critical Dunlop Co Ltd
Priority to GB21727/67A priority Critical patent/GB1214631A/en
Priority to IE514/68A priority patent/IE32048B1/en
Priority to NL6806524A priority patent/NL6806524A/xx
Priority to DE19681778537 priority patent/DE1778537A1/en
Priority to JP43030979A priority patent/JPS491469B1/ja
Priority to SE06392/68A priority patent/SE337466B/xx
Priority to FR1563466D priority patent/FR1563466A/fr
Publication of GB1214631A publication Critical patent/GB1214631A/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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
    • B29C48/83—Heating or cooling the cylinders
    • B29C48/832—Heating
    • 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
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • 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
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • B29C2035/042—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water
    • 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
    • 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
    • B29C48/03—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

Landscapes

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

Abstract

1,214,631. Extruding convoluted strip material. DUNLOP CO. Ltd. 8 May, 1968 [10 May, 1967], No. 21727/67. Heading B5A. [Also in Division B8] An extruded strip having a convoluted portion as at 40, Fig. 12, is made by extruding material, e.g. rubber, through a die orifice having a first part with bevelled leading edges and a second part which is obturated, the rate of flow through the first part thereby being greater than that through the second and the convolutions being formed by the restraining effect of material passing through the second part on that passing through the first part. The die plate of Fig. 4 has an essentially L-shaped orifice with the upstream edges of limb 19 being bevelled and an obturator 22, upstream of limb 20, being adjustable towards and away from limb 20 by rotation of bolts 23. The obturator may be angled to the die plate by rotating one of these bolts more than the other. In a modification, Figs. 8-11 (not shown), for producing the extrudate of Fig. 12, both limbs (31, 32) are bevelled, the former more so than the latter. At the junction of the limbs is an enlarged portion (35), Fig. 10 (not shown), which is masked on its upstream side by a throttle (37) attached to an obturator (36), Figs. 8, 9 (not shown). Throttle (37) is adjusted to produce an unconvoluted step portion 39, Fig. 12, which buttresses both unconvoluted limb 38, produced by material passing through die limb (32), and convoluted limb 40, produced by material passing through die limb (31). Preferred materials are vulcanizable elastomers such as natural rubber and styrene-butadiene copolymers or blends thereof. In the apparatus of Fig. 1, vulcanization takes place in a bath 7, which may contain a mixture of sodium nitrate and sodium nitrite, and the vulcanized product is washed with warm water in a bath 11. Other methods of vulcanization or curing mentioned are heating by use of heated liquids such as glycol, heated gases such as air, infra-red and micro-wave heaters and fluid bed techniques. Other materials mentioned are P.V.C., ethylene vinyl acetate copolymers and polystyrene-polyisoprene block copolymers in the use of all of which bath 7 may be dispensed with. The apparatus is particularly intended for the production of conveyer-belt edging.
GB21727/67A 1967-05-10 1967-05-10 Improvements in or relating to the manufacture of strip material Expired GB1214631A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB21727/67A GB1214631A (en) 1967-05-10 1967-05-10 Improvements in or relating to the manufacture of strip material
IE514/68A IE32048B1 (en) 1967-05-10 1968-05-02 Improvements in or relating to the manufacture of strip material
NL6806524A NL6806524A (en) 1967-05-10 1968-05-08
DE19681778537 DE1778537A1 (en) 1967-05-10 1968-05-09 Process for the production of strip material from plastic material and device for carrying out the process
JP43030979A JPS491469B1 (en) 1967-05-10 1968-05-10
SE06392/68A SE337466B (en) 1967-05-10 1968-05-10
FR1563466D FR1563466A (en) 1967-05-10 1968-05-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21727/67A GB1214631A (en) 1967-05-10 1967-05-10 Improvements in or relating to the manufacture of strip material

Publications (1)

Publication Number Publication Date
GB1214631A true GB1214631A (en) 1970-12-02

Family

ID=10167824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21727/67A Expired GB1214631A (en) 1967-05-10 1967-05-10 Improvements in or relating to the manufacture of strip material

Country Status (7)

Country Link
JP (1) JPS491469B1 (en)
DE (1) DE1778537A1 (en)
FR (1) FR1563466A (en)
GB (1) GB1214631A (en)
IE (1) IE32048B1 (en)
NL (1) NL6806524A (en)
SE (1) SE337466B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI980960A1 (en) * 1998-05-04 1999-11-04 Colmec S P A MOTODO AND BATH MIXED RETICULATION EQUIPMENT OF MELTED SALTS FOR EXTRUDED PROFILES

Also Published As

Publication number Publication date
JPS491469B1 (en) 1974-01-14
IE32048B1 (en) 1973-03-21
FR1563466A (en) 1969-04-11
SE337466B (en) 1971-08-09
IE32048L (en) 1968-11-10
NL6806524A (en) 1968-11-11
DE1778537A1 (en) 1971-08-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees