NL7304815A - Shaped plastic article - by injecting curable liquid into preheated, rotating mould - Google Patents

Shaped plastic article - by injecting curable liquid into preheated, rotating mould

Info

Publication number
NL7304815A
NL7304815A NL7304815A NL7304815A NL7304815A NL 7304815 A NL7304815 A NL 7304815A NL 7304815 A NL7304815 A NL 7304815A NL 7304815 A NL7304815 A NL 7304815A NL 7304815 A NL7304815 A NL 7304815A
Authority
NL
Netherlands
Prior art keywords
mould
curable
liquid
preheated
curable liquid
Prior art date
Application number
NL7304815A
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 filed Critical
Publication of NL7304815A publication Critical patent/NL7304815A/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
    • 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
    • B29C41/22—Making multilayered or multicoloured articles
    • 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
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • 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
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers
    • 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
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

Shaped articles, esp. with a high ratio between wall thickness and total diameter, such as wheels, pipes, rollers and automobile bumpers, are produced by (a) preheating a mould to 40-100 degrees C, (b) injecting a curable liq. into the mould while it is rotated at 50-1000 r.p.m., and (c) allowing the liquid in the mould to cure. Specif. the curable liquid is a polyurethane precursor consisting of a mixt. of a polyisocyanate and a polyol. The liquid may be foamable. Two or three different curable liquids may be introduced successively into the mould. One of the liquids may be foamable. Completely cured articles with a good surface without cracks. Laminated articles can be produced by using curable liquids of different compositions.
NL7304815A 1972-04-10 1973-04-06 Shaped plastic article - by injecting curable liquid into preheated, rotating mould NL7304815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1640772 1972-04-10
GB5048372 1972-11-02

Publications (1)

Publication Number Publication Date
NL7304815A true NL7304815A (en) 1973-10-12

Family

ID=26252023

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7304815A NL7304815A (en) 1972-04-10 1973-04-06 Shaped plastic article - by injecting curable liquid into preheated, rotating mould

Country Status (1)

Country Link
NL (1) NL7304815A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474248A2 (en) * 1990-09-07 1992-03-11 ENICHEM S.p.A. Process for the manufacture of shaped bodies with integrated polyurethane skin, and shaped bodies obtained thereby
WO2007144426A1 (en) * 2006-06-16 2007-12-21 Commissariat A L'energie Atomique Method for manufacturing a sealing bladder made of thermosetting polymer for a tank containing a pressurized fluid, such as a composite tank, and a tank

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0474248A2 (en) * 1990-09-07 1992-03-11 ENICHEM S.p.A. Process for the manufacture of shaped bodies with integrated polyurethane skin, and shaped bodies obtained thereby
EP0474248A3 (en) * 1990-09-07 1992-08-05 Ecp Enichem Polimeri S.R.L. Process for the manufacture of shaped bodies with integrated polyurethane skin, and shaped bodies obtained thereby
US5223193A (en) * 1990-09-07 1993-06-29 Ecp Enichem Polimeri S.R.L. Process for preparing shaped bodies with integrated polyurethane skin, and shaped bodies obtained by such process
WO2007144426A1 (en) * 2006-06-16 2007-12-21 Commissariat A L'energie Atomique Method for manufacturing a sealing bladder made of thermosetting polymer for a tank containing a pressurized fluid, such as a composite tank, and a tank
FR2902364A1 (en) * 2006-06-16 2007-12-21 Commissariat Energie Atomique METHOD FOR MANUFACTURING A THERMOSETTING POLYMER SEALANT FOR A RESERVOIR CONTAINING A PRESSURIZED FLUID, SUCH AS A COMPOSITE TANK, AND TANK

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Legal Events

Date Code Title Description
BV The patent application has lapsed