GB918933A - Improvements relating to moulding of reinforced polyester resin articles - Google Patents

Improvements relating to moulding of reinforced polyester resin articles

Info

Publication number
GB918933A
GB918933A GB2937460A GB2937460A GB918933A GB 918933 A GB918933 A GB 918933A GB 2937460 A GB2937460 A GB 2937460A GB 2937460 A GB2937460 A GB 2937460A GB 918933 A GB918933 A GB 918933A
Authority
GB
United Kingdom
Prior art keywords
moulding
polyester resin
elements
reinforced polyester
improvements relating
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
GB2937460A
Inventor
Robin Edwin Vian
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 GB2937460A priority Critical patent/GB918933A/en
Publication of GB918933A publication Critical patent/GB918933A/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/06—Impact-absorbing shells, e.g. of crash helmets
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A method of moulding a reinforced polyester resin article comprises laying the reinforcing agent (e.g. glass fibre cloth) over a male element or in a female element of a pair of matched moulding elements, bringing the elements together with a space between them corresponding to the thickness of the articles to be moulded, and injecting polyester resin into the space whilst reciprocating the elements relative to each other until the injection is completed when the elements are locked at the required spacing until the resin is set. In the production of safety helmets a layer of glass cloth honeycomb material is sandwiched between, and bonded to, the reinforced shells made by the above process.
GB2937460A 1960-08-25 1960-08-25 Improvements relating to moulding of reinforced polyester resin articles Expired GB918933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2937460A GB918933A (en) 1960-08-25 1960-08-25 Improvements relating to moulding of reinforced polyester resin articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2937460A GB918933A (en) 1960-08-25 1960-08-25 Improvements relating to moulding of reinforced polyester resin articles

Publications (1)

Publication Number Publication Date
GB918933A true GB918933A (en) 1963-02-20

Family

ID=10290533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2937460A Expired GB918933A (en) 1960-08-25 1960-08-25 Improvements relating to moulding of reinforced polyester resin articles

Country Status (1)

Country Link
GB (1) GB918933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064347A2 (en) * 2000-03-02 2001-09-07 Multotec Process Equipment (Pty) Limited Spiral concentrator unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001064347A2 (en) * 2000-03-02 2001-09-07 Multotec Process Equipment (Pty) Limited Spiral concentrator unit
WO2001064347A3 (en) * 2000-03-02 2002-02-21 Multotec Process Equip Pty Ltd Spiral concentrator unit

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