FR2595064A1 - Rotational injection-moulding - Google Patents

Rotational injection-moulding Download PDF

Info

Publication number
FR2595064A1
FR2595064A1 FR8602203A FR8602203A FR2595064A1 FR 2595064 A1 FR2595064 A1 FR 2595064A1 FR 8602203 A FR8602203 A FR 8602203A FR 8602203 A FR8602203 A FR 8602203A FR 2595064 A1 FR2595064 A1 FR 2595064A1
Authority
FR
France
Prior art keywords
parts
rotation
moulds
external appearance
average
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.)
Withdrawn
Application number
FR8602203A
Other languages
French (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.)
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 FR8602203A priority Critical patent/FR2595064A1/en
Publication of FR2595064A1 publication Critical patent/FR2595064A1/en
Withdrawn legal-status Critical Current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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/46—Heating or cooling
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/04—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould
    • B29C41/06—Rotational or centrifugal casting, i.e. coating the inside of a mould by rotating the mould about two or more axes
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts

Abstract

This process has been developed for the production of hollow articles of average and large size from reinforced or non-reinforced thermosetting materials. The moulds in 2 or more parts are, after filling with the predetermined quantity of thermosetting material (which is premixed manually or in a low-pressure injection machine) set into rotation about two perpendicular axes; during this rotation, the thermosetting material (in the liquid state) is distributed uniformly over the entire internal surface of the mould, polymerisation enabling the material to gel and then to cure. This process uses relatively simple equipment: the moulds may be made from laminated or cast resins or manufactured from metal (steel, cast iron, light alloys, etc.). This process permits rates of the order of 1 to 6 parts per hour; it enables parts to be obtained with an external appearance with a very high finish, without shrinkage cavities (blistering). Applications: hollow parts requiring an external appearance of very high finish, such as body panels (tailgates, doors), sports articles, average- and large- capacity tanks, etc.

Description

Titre de l'invention : ROTO - INJECTION
Deseniption
Ce procédé a été mis au point pour la réalisation d'objets creux de moyennes et grandes dimensions à partir de matières thermo-dureissables, armées ou non armées.Title of the invention: ROTO - INJECTION
Deseniption
This process was developed for the production of hollow objects of medium and large dimensions from thermosetting materials, armed or unarmed.

Les moules en 2 ou plusieurs parties sont, après remplissage de la quantité déterminées de matière thermodurcissable (prémélangée manuellement ou dans une machine d'injection basse pression) mus en rotation suivant deux axes perpendiculaires. ; pendant cette rotation la matière thermodureissable là l'état liquide) se répartit uniformément sur toute la surface intérieure du moule, la polymérisation permettant la gélification puis le durcissement de la matière. The molds in 2 or more parts are, after filling with the determined quantity of thermosetting material (premixed manually or in a low pressure injection machine) moved in rotation along two perpendicular axes. ; during this rotation the thermosetting material there the liquid state) is distributed uniformly on all the interior surface of the mold, the polymerization allowing the gelling then the hardening of the material.

Ce procédé utilise un matériel relativement simple : les moules peuvent être en résines stratifiées ou coulées ou fabriqués en métal (acier, fonte, alliages légers, etc...). This process uses a relatively simple material: the molds can be made of laminated or cast resins or made of metal (steel, cast iron, light alloys, etc.).

Ce procédé permet des cadences de l'ordre 1 à 6 pièces à l'heure ; il permet d'obtenir des pièces d'aspect extérieur d'un très grand fini, sans bullage. This process allows rates of the order of 1 to 6 pieces per hour; it allows to obtain parts of external appearance of a very large finish, without bubbling.

Applications
Pièces creuses demandant un aspect extérieur grand fini : carossenie (hayon, portières), articles de sport, cuves de moyennes et grandes contenances, etc... Applications
Hollow parts requiring a large finished exterior appearance: bodywork (tailgate, doors), sporting goods, medium and large capacity tanks, etc.

Claims (4)

Revendications :Claims: 1 - La température des moules et des composants de la matière thermodurcissable doit être inférieure à la température de polymérisation afin que cette polymérisation soie lente pour que la matière sole uniformément répartie et de bonne compacité. 1 - The temperature of the molds and of the components of the thermosetting material must be lower than the polymerization temperature so that this polymerization is slow so that the material is uniformly distributed and of good compactness. 2 - Les sens de rotation doivent être alternés afin qu'il n'y aie pas de zone préférentielle de dépôt. 2 - The directions of rotation must be alternated so that there is no preferential deposit area. 3 - Les vitesses de rotation sont à moduler suivant la géométrie et dimensions les pièces à obtenir @@@ la force centrifugè peut amener des zones préfènentielles de dépôt. 3 - The rotational speeds are to be modulated according to the geometry and dimensions of the parts to be obtained. The centrifugal force can bring about preferential deposition zones. 4 - Des armatures et insents métalliques peuvent être fixés sur le moule et sont ainsi moyés dans la pièce finie.  4 - Reinforcements and metal inserts can be fixed on the mold and are thus used in the finished part.
FR8602203A 1986-02-13 1986-02-13 Rotational injection-moulding Withdrawn FR2595064A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8602203A FR2595064A1 (en) 1986-02-13 1986-02-13 Rotational injection-moulding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8602203A FR2595064A1 (en) 1986-02-13 1986-02-13 Rotational injection-moulding

Publications (1)

Publication Number Publication Date
FR2595064A1 true FR2595064A1 (en) 1987-09-04

Family

ID=9332257

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8602203A Withdrawn FR2595064A1 (en) 1986-02-13 1986-02-13 Rotational injection-moulding

Country Status (1)

Country Link
FR (1) FR2595064A1 (en)

Similar Documents

Publication Publication Date Title
US4560607A (en) Method of joining materials by mechanical interlock and article
JPS63268611A (en) Manufacture of synthetic-resin molded form having deviated wall reinforcing section structure
US4497763A (en) Method for injection moulding coated parts from plastics material
US3257484A (en) Plastic articles having isotropic properties and methods of making same
US6638450B2 (en) Method for manufacturing an injection molded thermoplastic ophthalmic lens having an encapsulated light polarizing element
US3548050A (en) Method of making resin faced metal molding dies
FR2595064A1 (en) Rotational injection-moulding
EP2404728A1 (en) Injection or compression moulds including a temperature regulation circuit, removable insert including a regulation circuit and manufacturing method of these moulds
GB2147850A (en) "Fibre-reinforced thermoplastic laminate
US20020106487A1 (en) Hollow artificial stone with fabricating method thereof
EP1415794B9 (en) Method for manufacturing sanitary articles
US6576170B1 (en) Gas-assisted injection molding of thermosetting polymers
RU187738U1 (en) CENTRIFUGAL PUMP DRIVING WHEEL
JP3608859B2 (en) Hollow molded product and manufacturing method thereof
BE1007011A3 (en) PROCESS FOR OBTAINING BOX BELTS IN REINFORCED ALVEOLAR PLASTIC MATERIAL.
JPS6283122A (en) Injection molding machine
JP2773261B2 (en) Method for producing fiber-reinforced thermoplastic resin molded article
US20020014721A1 (en) Method of producing a high-strength component from plastic, and a high-strength component
JPS6372517A (en) Manufacture of fiber reinforced plastic bolt
JPH02274526A (en) Molding shape memory resin article
FR2941642A1 (en) Injection or compression mold for molding e.g. roof panel of car, has temperature regulation circuits formed at interfaces between lower faces of shells and inserts, where lower faces are arranged opposite to upper faces of shells
CA1050223A (en) Method of manufacturing composite bodies
JP6951286B2 (en) Fiber reinforced resin molded product and its manufacturing method
BRPI0608916A2 (en) method for forming a molded mesh component with a metallic layer on its outer surface and for forming a polymer composite feed charge, polymer composite feed charge, and, method for forming a polymer core with one layer metal arranged on an outer surface of the same
JPS61192533A (en) Manufacture of rod body made of thermoplastic synthetic resin

Legal Events

Date Code Title Description
ST Notification of lapse