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GB644516A - Improvements relating to flexible tubular structures made of thermoplastic material - Google Patents

Improvements relating to flexible tubular structures made of thermoplastic material

Info

Publication number
GB644516A
GB644516A GB1105748A GB1105748A GB644516A GB 644516 A GB644516 A GB 644516A GB 1105748 A GB1105748 A GB 1105748A GB 1105748 A GB1105748 A GB 1105748A GB 644516 A GB644516 A GB 644516A
Authority
GB
United Kingdom
Prior art keywords
tube
thermoplastic material
electrodes
knife
strip
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
GB1105748A
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 Rubber Co Ltd
Original Assignee
Dunlop Rubber 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 Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB1105748A priority Critical patent/GB644516A/en
Publication of GB644516A publication Critical patent/GB644516A/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
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • 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
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/50—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using internal forming surfaces, e.g. mandrels
    • 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
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • B29C53/52—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively using external forming surfaces, e.g. sleeves
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • 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
    • B29L2023/24—Endless tubes, e.g. inner tubes for pneumatic tyres
    • B29L2023/245—Inner tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

644,516. Making plastic tubes. DUNLOP RUBBER CO., Ltd., and HINTON, J. JONESApril 22, 1948, No. 11057. [Class 99(ii)] [Also in Group XXXIV] Seamed tubular members for use in the production of airtubes for tyres are formed by progressively folding, and joining by heat-sealing, the edges of a travelling strip of thermoplastic material which is periodically interrupted to leave unjoined portions at intervals where the material is severed to produce air-tube units. Figs. I and II show an apparatus for producing the tube units. The end of a continuous strip of thermoplastic material, such as plasticized polyvinyl chloride, is fed through a forming-device 3 comprising a sleeve 16 and core 4 in which the strip is folded into a double-loop section shown in Fig. V At the issuing end of the former, the neck-portion of the tube passes between a pair of roller electrodes 5 positioned in registering slots 14 and 17, 18 in the core and sheath. Timed breaks in the electric circuit provide for unsealed portions at pre-determined intervals along the tube. The double-tube is then slit along the neck-portion by a circular knife 6 to form two separate tubes which pass between feed-rolls 7 on to a table 8 for delivery on to a conveyer-band 10. The rolls 7 are power-driven and geared by belts 39, 41 to the shafts 20, 19 of the electrodes 5. Pivoted at 45 on the table 8 is a weighted arm 47 fitted with a knife 9, co-operating with an arcuate slot 42, 43 in the table, by which the unjoined portions of the tubes are transversely severed. The knife 9 is normally held in the raised position shown in Fig. 1, and is actuated by the plunder 48 of a solenoid 49. The latter is energized in timed relation with the cutout of the electrodes 5.
GB1105748A 1948-04-22 1948-04-22 Improvements relating to flexible tubular structures made of thermoplastic material Expired GB644516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1105748A GB644516A (en) 1948-04-22 1948-04-22 Improvements relating to flexible tubular structures made of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1105748A GB644516A (en) 1948-04-22 1948-04-22 Improvements relating to flexible tubular structures made of thermoplastic material

Publications (1)

Publication Number Publication Date
GB644516A true GB644516A (en) 1950-10-11

Family

ID=9979209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1105748A Expired GB644516A (en) 1948-04-22 1948-04-22 Improvements relating to flexible tubular structures made of thermoplastic material

Country Status (1)

Country Link
GB (1) GB644516A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992955A (en) * 1958-01-13 1961-07-18 Hulie E Bowerman Zero volume air tube and method of making
WO2015097575A3 (en) * 2013-12-23 2016-01-14 Centrum Badan Kosmicznych Polskiej Akademii Nauk System for forming drill tube from flat strip wound on a drum and drilling method using that tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992955A (en) * 1958-01-13 1961-07-18 Hulie E Bowerman Zero volume air tube and method of making
WO2015097575A3 (en) * 2013-12-23 2016-01-14 Centrum Badan Kosmicznych Polskiej Akademii Nauk System for forming drill tube from flat strip wound on a drum and drilling method using that tube
US9995096B2 (en) 2013-12-23 2018-06-12 Centrum Badan Kosmicznych Polskiej Akademii Nauk Drilling head driving device, tube forming mechanism and drilling method

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