NL7511268A - Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow - Google Patents

Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow

Info

Publication number
NL7511268A
NL7511268A NL7511268A NL7511268A NL7511268A NL 7511268 A NL7511268 A NL 7511268A NL 7511268 A NL7511268 A NL 7511268A NL 7511268 A NL7511268 A NL 7511268A NL 7511268 A NL7511268 A NL 7511268A
Authority
NL
Netherlands
Prior art keywords
mould
pressurised
tube
coolant flow
double pipe
Prior art date
Application number
NL7511268A
Other languages
Dutch (nl)
Original Assignee
Wavin Bv
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 Wavin Bv filed Critical Wavin Bv
Priority to NL7511268A priority Critical patent/NL7511268A/en
Publication of NL7511268A publication Critical patent/NL7511268A/en

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/66—Cooling by refrigerant introduced into the blown article
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The tube is deformed by raising it to at least its plasticising temp. and enclosing it in a mould. An enclosed cavity is formed inside the mould and this is filled with a gaseous pressurised medium; the pressure being maintained in the tube. When deformation is complete, the tube is filled with a coolant under pressure, - at 10 atm. as against 6 atm. for the gaseous medium, which is pumped through in a constant flow. Pref. freshly extruded and cut off blanks are used to form double sockets for pressure lines. Fittings from deformed tubes withstand higher loading than those formed by die casting. The technique enables the deformed pipe to be stabilised and cooled quickly enough to permit the use of directly extruded blanks.
NL7511268A 1975-09-24 1975-09-24 Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow NL7511268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7511268A NL7511268A (en) 1975-09-24 1975-09-24 Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7511268A NL7511268A (en) 1975-09-24 1975-09-24 Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow

Publications (1)

Publication Number Publication Date
NL7511268A true NL7511268A (en) 1977-03-28

Family

ID=19824529

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7511268A NL7511268A (en) 1975-09-24 1975-09-24 Deforming thermoplastic tube into double pipe sockets - in mould with pressurised gas followed by pressurised coolant flow

Country Status (1)

Country Link
NL (1) NL7511268A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed