GB641090A - Improvements in or relating to extruded thermoplastic tubing and production thereof - Google Patents

Improvements in or relating to extruded thermoplastic tubing and production thereof

Info

Publication number
GB641090A
GB641090A GB12765/47A GB1276547A GB641090A GB 641090 A GB641090 A GB 641090A GB 12765/47 A GB12765/47 A GB 12765/47A GB 1276547 A GB1276547 A GB 1276547A GB 641090 A GB641090 A GB 641090A
Authority
GB
United Kingdom
Prior art keywords
strip
tubing
edge
along
rib
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
GB12765/47A
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.)
EXTRUDED PLASTICS Inc
Original Assignee
EXTRUDED PLASTICS Inc
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 EXTRUDED PLASTICS Inc filed Critical EXTRUDED PLASTICS Inc
Publication of GB641090A publication Critical patent/GB641090A/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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

<PICT:0641090/IV (a)/1> <PICT:0641090/IV (a)/2> Tubing is formed from an extruded thermoplastic strip, Fig. 3, with a bead 4 along one edge so that on winding helically round a mandrel 6 the rib 4 overlaps the edge of the strip 3 and is bonded thereto. Materials mentioned include vinyl polymers, polymerized vinyl acetate, polyethylenes and nylon resins. If the tubing is formed immediately after extrusion of the strip 3, the temperature is sufficient to cause bonding under the pressure of the winding action, but a cement or a solvent may be used for the bonding. For large diameter tubes the strip may be formed with a bead 4 along one edge and one or more beads along the length of the flexible part 3 of the strip. The beads, which may be formed on the inside of the tubing, may be semi-circular, preferably with a hollow core 41, Fig. 3, or they may be triangular. The Specification as open to inspection under Sect. 91 comprises also tubing formed from a strip having flexible parts 23, 24, Fig. 11 (Cancelled), and an annular rib 25. Tubing may also be formed from a flat strip wound helically on a mandrel with the edges overlapping to form the reinforcing rib. This subject-matter does not appear in the Specification as accepted.
GB12765/47A 1945-08-30 1947-05-12 Improvements in or relating to extruded thermoplastic tubing and production thereof Expired GB641090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US641090XA 1945-08-30 1945-08-30

Publications (1)

Publication Number Publication Date
GB641090A true GB641090A (en) 1950-08-02

Family

ID=22053608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12765/47A Expired GB641090A (en) 1945-08-30 1947-05-12 Improvements in or relating to extruded thermoplastic tubing and production thereof

Country Status (1)

Country Link
GB (1) GB641090A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122171A (en) * 1960-10-19 1964-02-25 Carlon Products Corp Flexible plastic tubing
US3252483A (en) * 1963-11-26 1966-05-24 Air Reduction Flexible hose
DE1225929B (en) * 1964-07-22 1966-09-29 Emil Siegwart Method for applying a bundle insulation to pipelines and apparatus for this purpose, through which water or steam flows in particular and which are to be protected against heat loss
US3302479A (en) * 1963-09-11 1967-02-07 Teleflex Inc Low load flexible conduit
US3581776A (en) * 1968-10-02 1971-06-01 Dow Chemical Co Pipe insulation structure
US4062380A (en) * 1976-10-28 1977-12-13 Dayco Corporation Hose construction
US4119123A (en) * 1976-12-23 1978-10-10 Ernie Samuels, Inc. Flexible hose with wear indicator
US4383555A (en) * 1976-04-20 1983-05-17 Plastiflex Company International Helically wound hose from co-extruded profile with reinforcing ribs interlocked at adjacent convolutions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122171A (en) * 1960-10-19 1964-02-25 Carlon Products Corp Flexible plastic tubing
US3302479A (en) * 1963-09-11 1967-02-07 Teleflex Inc Low load flexible conduit
US3252483A (en) * 1963-11-26 1966-05-24 Air Reduction Flexible hose
DE1225929B (en) * 1964-07-22 1966-09-29 Emil Siegwart Method for applying a bundle insulation to pipelines and apparatus for this purpose, through which water or steam flows in particular and which are to be protected against heat loss
US3581776A (en) * 1968-10-02 1971-06-01 Dow Chemical Co Pipe insulation structure
US4383555A (en) * 1976-04-20 1983-05-17 Plastiflex Company International Helically wound hose from co-extruded profile with reinforcing ribs interlocked at adjacent convolutions
US4062380A (en) * 1976-10-28 1977-12-13 Dayco Corporation Hose construction
FR2369494A1 (en) * 1976-10-28 1978-05-26 Dayco Corp RING TUBE
US4119123A (en) * 1976-12-23 1978-10-10 Ernie Samuels, Inc. Flexible hose with wear indicator

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