GB737374A - Improvements in or relating to the curing of resins and resinous materials - Google Patents

Improvements in or relating to the curing of resins and resinous materials

Info

Publication number
GB737374A
GB737374A GB16?74/51A GB167451A GB737374A GB 737374 A GB737374 A GB 737374A GB 167451 A GB167451 A GB 167451A GB 737374 A GB737374 A GB 737374A
Authority
GB
United Kingdom
Prior art keywords
current
curing
impregnated fibrous
fibrous material
preheating
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
GB16?74/51A
Inventor
Cyril George Evans
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB16?74/51A priority Critical patent/GB737374A/en
Publication of GB737374A publication Critical patent/GB737374A/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
    • B29C35/12—Dielectric 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
    • 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
    • B29C35/12—Dielectric heating
    • B29C35/14—Dielectric heating 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
    • B29C48/06—Rod-shaped
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • 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
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2061/00—Use of condensation polymers of aldehydes or ketones or derivatives thereof, as moulding material
    • B29K2061/04—Phenoplasts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

Phenolic resin-impregnated fibrous material is cured by passing therethrough a low-frequency alternating current by means of electrodes in contact with the material. The current is initially small but builds up rapidly and then falls to a small value on completion of the cure and may be interrupted at any time to give the desired degree of cure. Current flow may be promoted by preheating the material, e.g. to a temperature in the range 80 DEG to 140 DEG C., the preheating increasing the initial current and reducing the time required for curing. A small part only of the material may be preheated, this part then passing current and causing adjacent parts to be heated and to pass current and so on. By this means the maximum current required is reduced. The invention may be applied to the curing of one or more stacked layers of impregnated fibrous material, e.g. asbestos, or to the continuous production of sheets of impregnated fibrous material by double belt machines or to the production of rods and tubes by extrusion (see Groups V and VIII).
GB16?74/51A 1951-07-11 1951-07-11 Improvements in or relating to the curing of resins and resinous materials Expired GB737374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16?74/51A GB737374A (en) 1951-07-11 1951-07-11 Improvements in or relating to the curing of resins and resinous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16?74/51A GB737374A (en) 1951-07-11 1951-07-11 Improvements in or relating to the curing of resins and resinous materials

Publications (1)

Publication Number Publication Date
GB737374A true GB737374A (en) 1955-09-28

Family

ID=9726063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16?74/51A Expired GB737374A (en) 1951-07-11 1951-07-11 Improvements in or relating to the curing of resins and resinous materials

Country Status (1)

Country Link
GB (1) GB737374A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184931B (en) * 1957-04-27 1965-01-07 Phoenix Gummiwerke Ag Process for the production of plastic sheets with a mirror-like silk-like satin gloss effect
FR2038243A1 (en) * 1969-04-04 1971-01-08 Acec PROCESSES FOR THE MANUFACTURING OF INSULATING LAMINATES
DE2922969A1 (en) * 1978-06-08 1979-12-13 Nissan Motor PROCESS FOR ASSEMBLING MULTI-LAYER TABLE-SHAPED CONSTRUCTIONS AND DEVICE FOR ITS IMPLEMENTATION
US5833915A (en) * 1993-08-11 1998-11-10 Polygenex International, Inc. Method of welding polyurethane thin film
DE102014208094A1 (en) * 2014-04-29 2015-10-29 MAGNA STEYR Engineering AG & Co KG Device for curing an electrically conductive adhesive

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184931B (en) * 1957-04-27 1965-01-07 Phoenix Gummiwerke Ag Process for the production of plastic sheets with a mirror-like silk-like satin gloss effect
FR2038243A1 (en) * 1969-04-04 1971-01-08 Acec PROCESSES FOR THE MANUFACTURING OF INSULATING LAMINATES
DE2922969A1 (en) * 1978-06-08 1979-12-13 Nissan Motor PROCESS FOR ASSEMBLING MULTI-LAYER TABLE-SHAPED CONSTRUCTIONS AND DEVICE FOR ITS IMPLEMENTATION
US4293363A (en) 1978-06-08 1981-10-06 Nissan Motor Company Limited Panel assembling method
US5833915A (en) * 1993-08-11 1998-11-10 Polygenex International, Inc. Method of welding polyurethane thin film
DE102014208094A1 (en) * 2014-04-29 2015-10-29 MAGNA STEYR Engineering AG & Co KG Device for curing an electrically conductive adhesive
US9757932B2 (en) 2014-04-29 2017-09-12 MAGNA STEYR Engineering AG & Co KG Device for hardening an electrically conductive adhesive

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