FR2375515A1 - Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness - Google Patents

Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness

Info

Publication number
FR2375515A1
FR2375515A1 FR7638821A FR7638821A FR2375515A1 FR 2375515 A1 FR2375515 A1 FR 2375515A1 FR 7638821 A FR7638821 A FR 7638821A FR 7638821 A FR7638821 A FR 7638821A FR 2375515 A1 FR2375515 A1 FR 2375515A1
Authority
FR
France
Prior art keywords
profile
skin
foam
distended
extrusion
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
FR7638821A
Other languages
French (fr)
Other versions
FR2375515B1 (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.)
Mesnel SA
Original Assignee
Mesnel SA
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 Mesnel SA filed Critical Mesnel SA
Priority to FR7638821A priority Critical patent/FR2375515A1/en
Publication of FR2375515A1 publication Critical patent/FR2375515A1/en
Application granted granted Critical
Publication of FR2375515B1 publication Critical patent/FR2375515B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/06—Sealing strips
    • 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
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0053—Producing sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/15—Sealing arrangements characterised by the material
    • B60J10/16—Sealing arrangements characterised by the material consisting of two or more plastic materials having different physical or chemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00—Sealing arrangements
    • B60J10/20—Sealing arrangements characterised by the shape
    • B60J10/26—Sealing arrangements characterised by the shape characterised by the surface shape
    • 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
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints

Abstract

A flexible strip seal profile having a smooth skin around a hollow foam core is made by coextrusion of the skin and foam materials under conditions which extrude a profile of reduced cross-section with a thick skin. Further expansion of the foam is allowed to dilate the cross-section and draw down the skin to its final thickness, before the profile passes through a vulcanisation chamber. The vulcanisation chamber may be an air oven, a microwave oven or a fluidised bed. The skin and foam are made of different but compatible materials such as ethylene-, propylene-diene or styrene butadiene rubbers, or neoprene (polychloroprene), nitrile (acrylonitrile) or natural rubber. The continuous profile is more versatile than profiles made by moulding processes. The process is more reliable than coextrusion of very thin skins on a full-sized profile.
FR7638821A 1976-12-23 1976-12-23 Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness Granted FR2375515A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7638821A FR2375515A1 (en) 1976-12-23 1976-12-23 Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7638821A FR2375515A1 (en) 1976-12-23 1976-12-23 Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness

Publications (2)

Publication Number Publication Date
FR2375515A1 true FR2375515A1 (en) 1978-07-21
FR2375515B1 FR2375515B1 (en) 1981-05-29

Family

ID=9181440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638821A Granted FR2375515A1 (en) 1976-12-23 1976-12-23 Extruded composite hollow elastic profile for car body seals - distended between extrusion and curing to minimise skin thickness

Country Status (1)

Country Link
FR (1) FR2375515A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477251A1 (en) * 1980-02-29 1981-09-04 Pirelli SEAL TRIM AND MOLD FOR THE MANUFACTURE OF THIS TRIM, USEFUL IN THE CONSTRUCTION OF VEHICLES
EP0040824A2 (en) * 1980-05-23 1981-12-02 SMAE-SOCIETA' MERIDIONALE ACCESSORI ELASTOMERICI S.p.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
US4374079A (en) * 1981-03-04 1983-02-15 Hancor, Inc. Method and apparatus for manufacturing expanded and layered semiround plastic tubings
DE8710565U1 (en) * 1987-08-01 1987-09-24 Thumm, Karl, 6944 Hemsbach, De

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430278A (en) 1982-02-01 1984-02-07 Jones Sr John L Process for increasing the permeability of plastic membrane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477251A1 (en) * 1980-02-29 1981-09-04 Pirelli SEAL TRIM AND MOLD FOR THE MANUFACTURE OF THIS TRIM, USEFUL IN THE CONSTRUCTION OF VEHICLES
EP0040824A2 (en) * 1980-05-23 1981-12-02 SMAE-SOCIETA' MERIDIONALE ACCESSORI ELASTOMERICI S.p.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
EP0040824A3 (en) * 1980-05-23 1982-04-28 Smae-Societa' Meridionale Accessori Elastomerici S.P.A Process for continuously manufacturing bi-compound shaped articles and the bi-compound shaped articles so obtained
US4374079A (en) * 1981-03-04 1983-02-15 Hancor, Inc. Method and apparatus for manufacturing expanded and layered semiround plastic tubings
DE8710565U1 (en) * 1987-08-01 1987-09-24 Thumm, Karl, 6944 Hemsbach, De

Also Published As

Publication number Publication date
FR2375515B1 (en) 1981-05-29

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