GB708800A - Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere - Google Patents

Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere

Info

Publication number
GB708800A
GB708800A GB27360/52A GB2736052A GB708800A GB 708800 A GB708800 A GB 708800A GB 27360/52 A GB27360/52 A GB 27360/52A GB 2736052 A GB2736052 A GB 2736052A GB 708800 A GB708800 A GB 708800A
Authority
GB
United Kingdom
Prior art keywords
tube
manufacture
vinylidene chloride
chloride polymer
die
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
GB27360/52A
Inventor
Carroll Rexford Irons
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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
Priority to FR996789D priority Critical patent/FR996789A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Priority to GB27360/52A priority patent/GB708800A/en
Publication of GB708800A publication Critical patent/GB708800A/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
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

<PICT:0708800/IV (a)/1> In the manufacture of tubular films from a normally crystalline vinylidene chloride polymer or copolymer thereof by extruding the molten polymer in tubular form from a die 10 downwardly into a cooling bath 12 in which the tube is supercooled, constricted by rolls 13 and filled with a lubricating liquid 14 to a level near that of the bath, whereafter the film is stretched and oriented by inflation with air between the pairs of pinch rolls 16 and 17, the tendency of the opposed internal faces of the flattened tube to adhere to each other is obviated by introducing, continuously and at a uniform rate, a finely-divided solid anti-sticking agent suspended in a gas stream, e.g., air, into the space between the die and the surface of the lubricating liquid in the hot tube while venting continuously the suspending agent. As shown, the gaseous suspension is introduced through tube 21 and the gas vented through tube 20. A baffle plate 22 deflects the powdered solid against the internal walls of the nearly molten tubular film. Specified anti-sticking agents are finely ground polyvinylidene chloride, micropulverised mica or starch, zinc stearate and talc. Specifications 656,735 and 664,638 are referred to.
GB27360/52A 1952-10-30 1952-10-30 Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere Expired GB708800A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR996789D FR996789A (en) 1952-10-30 1949-08-19 Improvements in the production of films from a polymer crystalline devinylidene chloride
GB27360/52A GB708800A (en) 1952-10-30 1952-10-30 Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27360/52A GB708800A (en) 1952-10-30 1952-10-30 Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere

Publications (1)

Publication Number Publication Date
GB708800A true GB708800A (en) 1954-05-12

Family

ID=10258345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27360/52A Expired GB708800A (en) 1952-10-30 1952-10-30 Process for the manufacture of crystalline vinylidene chloride polymer tubing whose walls do not cohere

Country Status (2)

Country Link
FR (1) FR996789A (en)
GB (1) GB708800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338350A2 (en) * 1988-04-08 1989-10-25 Asahi Kasei Kogyo Kabushiki Kaisha Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film
EP0940270A2 (en) * 1998-03-04 1999-09-08 Honda Giken Kogyo Kabushiki Kaisha Tire tube and tire tube manufacturing apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0338350A2 (en) * 1988-04-08 1989-10-25 Asahi Kasei Kogyo Kabushiki Kaisha Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film
EP0338350A3 (en) * 1988-04-08 1990-06-20 Asahi Kasei Kogyo Kabushiki Kaisha Dusting treatment agent, dusting-treated thermoplastic film, and method of dusting treatment for the film
EP0940270A2 (en) * 1998-03-04 1999-09-08 Honda Giken Kogyo Kabushiki Kaisha Tire tube and tire tube manufacturing apparatus
EP0940270A3 (en) * 1998-03-04 2000-03-22 Honda Giken Kogyo Kabushiki Kaisha Tire tube and tire tube manufacturing apparatus
US6451162B2 (en) 1998-03-04 2002-09-17 Honda Giken Kogyo Kabushiki Kaisha Tire tube manufacturing apparatus
US6866735B2 (en) 1998-03-04 2005-03-15 Honda Giken Kogyo Kabushiki Kaisha Method of manufacturing a tire tube

Also Published As

Publication number Publication date
FR996789A (en) 1951-12-26

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