GB767051A - Improvements in or relating to molding plastic pipes - Google Patents

Improvements in or relating to molding plastic pipes

Info

Publication number
GB767051A
GB767051A GB2312154A GB2312154A GB767051A GB 767051 A GB767051 A GB 767051A GB 2312154 A GB2312154 A GB 2312154A GB 2312154 A GB2312154 A GB 2312154A GB 767051 A GB767051 A GB 767051A
Authority
GB
United Kingdom
Prior art keywords
mould
pipe
mat
threads
counterbore
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
GB2312154A
Inventor
Kenneth A Schafer
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.)
FIBERCAST CORP
Original Assignee
FIBERCAST CORP
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 FIBERCAST CORP filed Critical FIBERCAST CORP
Priority to GB2312154A priority Critical patent/GB767051A/en
Publication of GB767051A publication Critical patent/GB767051A/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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D1/00—Producing articles with screw-threads
    • 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
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
    • B29C70/323—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould
    • B29C70/326—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core on the inner surface of a rotating mould by rotating the mould around its axis of symmetry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

767,051. Making reinforced plastic pipes. FIBERCAST CORPORATION. Aug. 9,1954. No. 23121/54. Class 87(2). [Also in Group XXVIII] A plastic pipe with fibrous reinforcement embedded in it throughout its length near the surface and threaded externally or internally on at least one end is made by inserting a fibrous mat into a tubular mould adjacent the inner surface of the mould, injecting a liquid thermosetting resin, centrifuging the liquid resin to form a tubular body, simultaneously moulding threads on one or both ends of the body and curing the resin. A fibrous mat 20 is rolled into a tube and inserted in the bore of a cylindrical mould 6, Fig. 3 in one or each end of which a member 12 has been fitted with a friction fit. The mat is long enough to extend to the ends of the mould. This member is formed with internal threads which are preferably tapered. The mat 20 and the member 12 are retained bv a cap 22 placed over the end of the mould. The mould is rotated and heated while liquid resin is injected into it, which penetrates the fibrous mat 20 by centrifugal force, including that part within the member 12, into the thread grooves of which some of the fibres will also be forced. When the pipe 18 so formed has been cured and solidified the end caps 22 are removed and the pipe forced out of either end of the mould. The mould may be counterbored to receive an internally threaded member of larger diameter to form a pipe with " upset " threads at its ends, in which case the moulded pipe can only be forced out of the mould in one .direction and the invention can be used for moulding threads on one end only. Fig. 5 shows a construction for moulding internal threads of larger diameter on one end of the moulded pipe, suitable e.g. for receiving the external threads on a pipe moulded as in Fig. 3. A counterbore 60 is formed in the mould 50, with a shoulder 64, which may be rounded as shown, between the counterbore and the bore 58 of the mould. The fibrous mat 72 is inserted in the mould and folded into contact with the wall of the counterbore and an externally threaded member 66 is threaded into the mat. The retaining cap 70 may have holes 80 for locating pins 78 which fit into holes in the member 66 and ensure its concentricity.
GB2312154A 1954-08-09 1954-08-09 Improvements in or relating to molding plastic pipes Expired GB767051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2312154A GB767051A (en) 1954-08-09 1954-08-09 Improvements in or relating to molding plastic pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2312154A GB767051A (en) 1954-08-09 1954-08-09 Improvements in or relating to molding plastic pipes

Publications (1)

Publication Number Publication Date
GB767051A true GB767051A (en) 1957-01-30

Family

ID=10190444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2312154A Expired GB767051A (en) 1954-08-09 1954-08-09 Improvements in or relating to molding plastic pipes

Country Status (1)

Country Link
GB (1) GB767051A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516012A1 (en) * 1981-11-12 1983-05-13 Conley Elkim FIBER REINFORCED SYNTHETIC RESIN PUMP ROD AND METHOD FOR MANUFACTURING SAME
EP2048389B1 (en) * 2007-10-09 2012-07-25 SKF Aerospace France Light ball-and-socket joint for articulation and method of manufacturing such a joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516012A1 (en) * 1981-11-12 1983-05-13 Conley Elkim FIBER REINFORCED SYNTHETIC RESIN PUMP ROD AND METHOD FOR MANUFACTURING SAME
EP2048389B1 (en) * 2007-10-09 2012-07-25 SKF Aerospace France Light ball-and-socket joint for articulation and method of manufacturing such a joint

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