GB906797A - Manufacture of rubber coated fabric - Google Patents

Manufacture of rubber coated fabric

Info

Publication number
GB906797A
GB906797A GB27687/60A GB2768760A GB906797A GB 906797 A GB906797 A GB 906797A GB 27687/60 A GB27687/60 A GB 27687/60A GB 2768760 A GB2768760 A GB 2768760A GB 906797 A GB906797 A GB 906797A
Authority
GB
United Kingdom
Prior art keywords
rubber
fabric
coated
cure
layer
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
GB27687/60A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB906797A publication Critical patent/GB906797A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2319/00—Synthetic rubber

Landscapes

  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

906,797. Rubber-coated fabrics. DU PONT DE NEMOURS & CO., E. I. Aug. 10, 1960 [Sept. 1, 1959], No. 27687/60. Drawings to Specification. Class 140. Rubber-coated fabric sheet material suitable for the production of grooved diaphragms is produced by applying a layer of uncured rubber composition to at least one side of a fabric, pressing the thus-coated fabric while heating it to curing temperature for a period of time sufficient to cure the rubber layer partially to 50 to 90% of full cure, whereby the fabric is anchored against under movement relative to the plane of the rubber layer when grooved diaphragms are subsequently moulded from the partially cured sheet. Both sides of the fabric may be coated with a layer of the rubber composition, the two layers being of approximately equal thickness. The uncured rubber-coated fabric may be continuously and uniformly pressed and heated in a moving arcuate pressure zone formed between the cylindrical surface of a heated rotating drum and an endless pressureband looped about a major portion of said surface and moving therewith. Flexible diaphragms having an annular groove in the intended region of flexure may be made by simultaneously pressing and heating the partiallycured sheet material in a grooved mould at a pressure, temperature, and for a period of time sufficient to cure the rubber coating fully. The rubber composition may comprise a natural or synthetic rubber, e.g. butadiene-styrene copolymer, and may contain a sufficient amount of free sulphur to cure it fully; the pressing and heating of the uncured rubber-coated fabric being carried out so as to cause 50 to 90% of the sulphur to react with the rubber, based on the weight of sulphur needed to cure the coating fully. The rubber coating may also contain polyvinyl chloride. A primer coating, which may contain butadiene-acrylonitrile copolymer, phenol - formaldehyde and paracoumaroneindene resins, may be applied to the fabric which may be a woven cotton or nylon fabric, non-woven, or open weave fabric made from fairly heavy threads. The surface of the coated sheet material may be dusted with mica and/or a synthetic wax.
GB27687/60A 1959-09-01 1960-08-10 Manufacture of rubber coated fabric Expired GB906797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83744759A 1959-09-01 1959-09-01

Publications (1)

Publication Number Publication Date
GB906797A true GB906797A (en) 1962-09-26

Family

ID=25274465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27687/60A Expired GB906797A (en) 1959-09-01 1960-08-10 Manufacture of rubber coated fabric

Country Status (1)

Country Link
GB (1) GB906797A (en)

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