FR2134412A1 - Hard foam prodn - with variable volume core to regulate foaming pressure - Google Patents

Hard foam prodn - with variable volume core to regulate foaming pressure

Info

Publication number
FR2134412A1
FR2134412A1 FR7214273A FR7214273A FR2134412A1 FR 2134412 A1 FR2134412 A1 FR 2134412A1 FR 7214273 A FR7214273 A FR 7214273A FR 7214273 A FR7214273 A FR 7214273A FR 2134412 A1 FR2134412 A1 FR 2134412A1
Authority
FR
France
Prior art keywords
variable volume
regulate
hard foam
volume core
foaming pressure
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
FR7214273A
Other languages
English (en)
Other versions
FR2134412B1 (fr
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of FR2134412A1 publication Critical patent/FR2134412A1/fr
Application granted granted Critical
Publication of FR2134412B1 publication Critical patent/FR2134412B1/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • B29C44/105—Applying counter-pressure during expanding the counterpressure being exerted by a fluid
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0446—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by increasing the density locally by compressing part of the foam while still in the mould
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/005—Compensating volume or shape change during moulding, in general

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
FR7214273A 1971-04-23 1972-04-21 Hard foam prodn - with variable volume core to regulate foaming pressure Granted FR2134412A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712119875 DE2119875C3 (de) 1971-04-23 1971-04-23 Verfahren und Vorrichtung zum Regulieren des Schäumvorganges beim Herstellen von Hartschaumstoffbauteilen

Publications (2)

Publication Number Publication Date
FR2134412A1 true FR2134412A1 (en) 1972-12-08
FR2134412B1 FR2134412B1 (fr) 1975-06-20

Family

ID=5805679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214273A Granted FR2134412A1 (en) 1971-04-23 1972-04-21 Hard foam prodn - with variable volume core to regulate foaming pressure

Country Status (3)

Country Link
DE (1) DE2119875C3 (fr)
FR (1) FR2134412A1 (fr)
IT (1) IT953330B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2889480A1 (fr) * 2005-08-05 2007-02-09 Allibert Buckhorn Europ Soc Pa Procede de rotomoulage de pieces creuses, et ossature de structure porteuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2889480A1 (fr) * 2005-08-05 2007-02-09 Allibert Buckhorn Europ Soc Pa Procede de rotomoulage de pieces creuses, et ossature de structure porteuse
EP1757424A1 (fr) 2005-08-05 2007-02-28 Allibert-Buckhorn Europe Procédé de rotomulage de pièces creuses, et ossature de structure porteuse

Also Published As

Publication number Publication date
FR2134412B1 (fr) 1975-06-20
DE2119875A1 (de) 1972-11-02
IT953330B (it) 1973-08-10
DE2119875B2 (de) 1973-06-14
DE2119875C3 (de) 1974-01-17

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Legal Events

Date Code Title Description
ST Notification of lapse