FR2129862A1 - Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings - Google Patents

Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings

Info

Publication number
FR2129862A1
FR2129862A1 FR7109314A FR7109314A FR2129862A1 FR 2129862 A1 FR2129862 A1 FR 2129862A1 FR 7109314 A FR7109314 A FR 7109314A FR 7109314 A FR7109314 A FR 7109314A FR 2129862 A1 FR2129862 A1 FR 2129862A1
Authority
FR
France
Prior art keywords
moulding
mouldings
walls
exterior surface
esp
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.)
Granted
Application number
FR7109314A
Other languages
French (fr)
Other versions
FR2129862B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7109314A priority Critical patent/FR2129862A1/en
Publication of FR2129862A1 publication Critical patent/FR2129862A1/en
Application granted granted Critical
Publication of FR2129862B1 publication Critical patent/FR2129862B1/fr
Granted 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
    • F16L47/32—Branch units, e.g. made in one piece, welded, riveted

Abstract

Shapes having >=1 internal cavity or passage and produced from a dense undersize moulding of an expansible thermoplastic compsn. subsequently supported on or in a jig with chilled walls and then heated to above the threshold blowing temp. Pref. an ancillary moulding cavity is used to limit the degree of dimensional expansion by blowing. Ancillary chilled sleeves or plugs may be used to prevent some zones of moulding from expanding at all. Esp. for producing plastic conduits or fittings with a smooth bore and controlled joint dia. together with integral partially foamed walls offering better thermal and acoustic insulation than dense walls. Polymers based on PVC, polystyrene, ABS, polyolefins or acrylic resins are suitable for hollow mouldings.
FR7109314A 1971-03-17 1971-03-17 Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings Granted FR2129862A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7109314A FR2129862A1 (en) 1971-03-17 1971-03-17 Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7109314A FR2129862A1 (en) 1971-03-17 1971-03-17 Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings

Publications (2)

Publication Number Publication Date
FR2129862A1 true FR2129862A1 (en) 1972-11-03
FR2129862B1 FR2129862B1 (en) 1973-12-07

Family

ID=9073676

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7109314A Granted FR2129862A1 (en) 1971-03-17 1971-03-17 Partially expanded mouldings - with a smooth interior or exterior surface esp self insulating pipe fittings

Country Status (1)

Country Link
FR (1) FR2129862A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436010A1 (en) * 1978-09-13 1980-04-11 Bakelittfab As PROCESS FOR THE MANUFACTURE OF MOLDED PARTS IN EXPANDED PLASTIC MATERIAL

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342912A (en) * 1961-03-13 1967-09-19 Dow Chemical Co Method of molding plastic containers
GB1158430A (en) * 1965-12-14 1969-07-16 Goodrich Co B F Apparatus and Method for Heating Moving Strip Material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342912A (en) * 1961-03-13 1967-09-19 Dow Chemical Co Method of molding plastic containers
GB1158430A (en) * 1965-12-14 1969-07-16 Goodrich Co B F Apparatus and Method for Heating Moving Strip Material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436010A1 (en) * 1978-09-13 1980-04-11 Bakelittfab As PROCESS FOR THE MANUFACTURE OF MOLDED PARTS IN EXPANDED PLASTIC MATERIAL

Also Published As

Publication number Publication date
FR2129862B1 (en) 1973-12-07

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Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse