GB843763A - Improvements relating to the production of rubber composition sheet material - Google Patents

Improvements relating to the production of rubber composition sheet material

Info

Publication number
GB843763A
GB843763A GB3522655A GB3522655A GB843763A GB 843763 A GB843763 A GB 843763A GB 3522655 A GB3522655 A GB 3522655A GB 3522655 A GB3522655 A GB 3522655A GB 843763 A GB843763 A GB 843763A
Authority
GB
United Kingdom
Prior art keywords
sheets
styrene
sheet
compositions
colour
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
GB3522655A
Inventor
Walter Saul
John Joseph Percival
Robert Walter Greenaway
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.)
SEMTEX Ltd
Original Assignee
SEMTEX 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 SEMTEX Ltd filed Critical SEMTEX Ltd
Priority to GB3522655A priority Critical patent/GB843763A/en
Publication of GB843763A publication Critical patent/GB843763A/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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/30—Making multilayered or multicoloured articles
    • 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
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured
    • B29K2995/0021—Multi-coloured
    • 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
    • B29L2031/732—Floor coverings

Abstract

A marbled sheet of natural or synthetic rubber composition is prepared by passing between rotating rollers, and then vulcanizing, an assembly comprising three superposed sheets of plastic rubber compositions, the intermediate sheet being of a different colour from that of the other two sheets which are of substantially the same colour, each composition containing a fibrous filler and a thermoplastic synthetic resin at least partially compatible with the natural or synthetic rubber, and the compositions being intermingled on passing between the rollers. The assembly may include a sheet or sheets of another colour or colours. The thickness of one of the two sheets of substantially the same colour is preferably five to fifteen times that of each other sheet. The rolling may be effected in a three-roll calender having either equal nips or a larger first nip, and a folding bank is formed at the second nip. The synthetic resin component is preferably a coumarone resin or a styrene-butadiene copolymer containing a high proportion by weight of styrene, and the synthetic rubber may consist of a butadiene-styrene copolymer containing a low proportion by weight of styrene. The fibrous fillers specified are asbestos and cellulosic fibres, and the compositions may also contain nonfibrous fillers, e.g. clay, powdered limestone, wood flour, carbon black, crushed coconut-shells, and other nut shells.
GB3522655A 1955-12-08 1955-12-08 Improvements relating to the production of rubber composition sheet material Expired GB843763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3522655A GB843763A (en) 1955-12-08 1955-12-08 Improvements relating to the production of rubber composition sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3522655A GB843763A (en) 1955-12-08 1955-12-08 Improvements relating to the production of rubber composition sheet material

Publications (1)

Publication Number Publication Date
GB843763A true GB843763A (en) 1960-08-10

Family

ID=10375301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3522655A Expired GB843763A (en) 1955-12-08 1955-12-08 Improvements relating to the production of rubber composition sheet material

Country Status (1)

Country Link
GB (1) GB843763A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150013871A1 (en) * 2013-07-15 2015-01-15 Bridgestone Americas Tire Operations, Llc Compression Molded Green Rubber Component and Method for Manufacturing the Same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150013871A1 (en) * 2013-07-15 2015-01-15 Bridgestone Americas Tire Operations, Llc Compression Molded Green Rubber Component and Method for Manufacturing the Same

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