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GB1058586A - Improvements in and relating to the production of shaped articles from organic thermoplastic materials - Google Patents

Improvements in and relating to the production of shaped articles from organic thermoplastic materials

Info

Publication number
GB1058586A
GB1058586A GB4064563A GB4064563A GB1058586A GB 1058586 A GB1058586 A GB 1058586A GB 4064563 A GB4064563 A GB 4064563A GB 4064563 A GB4064563 A GB 4064563A GB 1058586 A GB1058586 A GB 1058586A
Authority
GB
United Kingdom
Prior art keywords
mould
rotated
articles
walls
bulk density
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.)
Expired
Application number
GB4064563A
Inventor
Ronald Ian Kliene
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB4064563A priority Critical patent/GB1058586A/en
Priority to FR991588A priority patent/FR1412089A/en
Priority to ES0304965A priority patent/ES304965A1/en
Priority to NL6411996A priority patent/NL6411996A/xx
Publication of GB1058586A publication Critical patent/GB1058586A/en
Expired 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
    • B29C41/02—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
    • B29C41/025—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 having hollow walls
    • 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
    • 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
    • B29K2023/00—Use of polyalkenes 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

1,058,586. Moulding hollow articles. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 5, 1964, No. 40645/63. Heading B5A. A box, crate, drum or like open-mouthed hollow article is moulded from an organic thermoplastic material by rotational casting in a mould, one surface of which has projections 4 into the mould cavity, the material being introduced into the cavity in such amounts that the walls of the moulding 6 become fused at 7 opposite the projections but are elsewhere separated by cavities. As shown, the mould is in the form of a pair of mould plates 1, 2 secured by clips 3. The articles may be formed in two or more parts which are subsequently joined together, for example by welding. For producing tubular bodies the mould is rotated about its longitudinal axis only, and for other articles the mould is rotated about two or more axes, for example two at right angles. The mould may be treated in an oven, by radiant heat or by electrical heaters in or around the mould walls, and cooled by water or cold air. A solid thermoplastic, e.g. polythene, polyproplene, unplasticized polyvinyl chloride and vinyl chloride/vinyl acetate polymer, may be introduced into the mould, heating the mould before and/or during its rotation. Alternatively a fluid polymer/plasticizer paste, e.g. polyvinyl chloride, is introduced into the mould, rotating the mould at a temperature below the paste setting temperature, and then heating the mould to gel the paste. The solid thermoplastic material is preferably powdered, granular or in other particulate form with a bulk density such as to fill the mould substantially completely. Preferably the bulk density of the material will be not exceeding 0.75 times the specific gravity of the thermoplastic material. In a preferred embodiment polythene with a melt flow index of 20 and specific gravity of 0.924 is cut into granules passing an 8-inch sieve and with a bulk density of 0.40 grams per c.c. fills a mould having a space between the plates of 0.25 and 0.5 inch. The mould is closed and then rotated about its longitudinal and transverse axes and while rotated it is heated for 10 minutes in an oven at 205‹ C. and then cooled in water. The finished panel had walls of 0.15 inch wide between ribs which were 0À6 inch wide at the wall joints.
GB4064563A 1963-10-15 1963-10-15 Improvements in and relating to the production of shaped articles from organic thermoplastic materials Expired GB1058586A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4064563A GB1058586A (en) 1963-10-15 1963-10-15 Improvements in and relating to the production of shaped articles from organic thermoplastic materials
FR991588A FR1412089A (en) 1963-10-15 1964-10-15 Process for manufacturing shaped articles from organic thermoplastic materials
ES0304965A ES304965A1 (en) 1963-10-15 1964-10-15 METHOD FOR MOLDING ORGANIC THERMOPLASTIC MATERIALS
NL6411996A NL6411996A (en) 1963-10-15 1964-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4064563A GB1058586A (en) 1963-10-15 1963-10-15 Improvements in and relating to the production of shaped articles from organic thermoplastic materials

Publications (1)

Publication Number Publication Date
GB1058586A true GB1058586A (en) 1967-02-15

Family

ID=10415921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4064563A Expired GB1058586A (en) 1963-10-15 1963-10-15 Improvements in and relating to the production of shaped articles from organic thermoplastic materials

Country Status (3)

Country Link
ES (1) ES304965A1 (en)
GB (1) GB1058586A (en)
NL (1) NL6411996A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003082A1 (en) * 1977-12-30 1979-07-25 The Mettoy Company Limited Method and apparatus for rotationally moulding a decorated article
WO1991017320A1 (en) * 1990-05-07 1991-11-14 Manfred Kahmann Shock absorbing device
AU663051B2 (en) * 1990-05-07 1995-09-28 Manfred Kahmann A tubular elastomeric shock absorbing fender
WO2002043938A1 (en) * 2000-12-01 2002-06-06 Fairhurst, Paul, Alan Process for manufacturing multi-walled vessels
NL1018671C2 (en) * 2001-07-31 2003-02-03 Zweva Rotomoulding N V Method and set of molds for the rotation molding of a container.
US6912966B2 (en) 2003-09-18 2005-07-05 E-Z Dock, Inc. Molded plastic gangway
US7243608B2 (en) 2004-12-22 2007-07-17 E-Z-Dock, Inc. Methods and apparatus for assembling docks
NL1036127C (en) * 2008-10-29 2010-05-03 Wavin Bv PLASTIC PUT WITH A WALL-WALLED EXTERIOR WALL, AND ANOTHER COMPOSITION FOR MANUFACTURING THEM.
WO2010049920A3 (en) * 2008-10-29 2010-06-24 Wavin B.V. Plastic drain or inspection chamber portion with hollow-walled circumferential wall, as well as mould assembly for thereof
NL1037148C2 (en) * 2009-07-24 2011-01-25 Wavin Bv Method and mould assembly for rotation moulding a pipe part with a spigot end, as well as pipe part obtained therewith.
US8870025B2 (en) 2009-10-23 2014-10-28 Nestec S.A. Method and device for aseptically dispensing multiple portions of a fluid

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003082A1 (en) * 1977-12-30 1979-07-25 The Mettoy Company Limited Method and apparatus for rotationally moulding a decorated article
WO1991017320A1 (en) * 1990-05-07 1991-11-14 Manfred Kahmann Shock absorbing device
GB2260593A (en) * 1990-05-07 1993-04-21 Manfred Kahmann Shock absorbing device
GB2260593B (en) * 1990-05-07 1994-04-20 Manfred Kahmann Shock absorbing fender
US5409199A (en) * 1990-05-07 1995-04-25 Kahmann; Manfred Shock absorbing fender
AU663051B2 (en) * 1990-05-07 1995-09-28 Manfred Kahmann A tubular elastomeric shock absorbing fender
WO2002043938A1 (en) * 2000-12-01 2002-06-06 Fairhurst, Paul, Alan Process for manufacturing multi-walled vessels
GB2369596B (en) * 2000-12-01 2005-02-02 John Edward Barker Process for manufacturing multi-walled vessels
EP1281499A1 (en) * 2001-07-31 2003-02-05 zweva Rotomoulding N.V. Method and set of moulds for rotational moulding of a container
NL1018671C2 (en) * 2001-07-31 2003-02-03 Zweva Rotomoulding N V Method and set of molds for the rotation molding of a container.
US6912966B2 (en) 2003-09-18 2005-07-05 E-Z Dock, Inc. Molded plastic gangway
US7243608B2 (en) 2004-12-22 2007-07-17 E-Z-Dock, Inc. Methods and apparatus for assembling docks
NL1036127C (en) * 2008-10-29 2010-05-03 Wavin Bv PLASTIC PUT WITH A WALL-WALLED EXTERIOR WALL, AND ANOTHER COMPOSITION FOR MANUFACTURING THEM.
WO2010049920A3 (en) * 2008-10-29 2010-06-24 Wavin B.V. Plastic drain or inspection chamber portion with hollow-walled circumferential wall, as well as mould assembly for thereof
WO2010049510A3 (en) * 2008-10-29 2010-07-29 Wavin B.V. Method and mould assembly for rotation moulding a pipe part with a spigot end, as well as pipe part obtained therewith
CN102203355A (en) * 2008-10-29 2011-09-28 韦文有限公司 Plastic drain or inspection chamber portion with hollow-walled circumferential wall, as well as mould assembly for thereof
CN102203355B (en) * 2008-10-29 2014-11-05 韦文有限公司 Plastic drain or inspection chamber portion with hollow-walled circumferential wall, as well as mould assembly for thereof
NL1037148C2 (en) * 2009-07-24 2011-01-25 Wavin Bv Method and mould assembly for rotation moulding a pipe part with a spigot end, as well as pipe part obtained therewith.
US8870025B2 (en) 2009-10-23 2014-10-28 Nestec S.A. Method and device for aseptically dispensing multiple portions of a fluid

Also Published As

Publication number Publication date
ES304965A1 (en) 1965-04-01
NL6411996A (en) 1965-04-20

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