GB1115581A - Improvements in and relating to sponge rubber sheeting - Google Patents

Improvements in and relating to sponge rubber sheeting

Info

Publication number
GB1115581A
GB1115581A GB3760065A GB3760065A GB1115581A GB 1115581 A GB1115581 A GB 1115581A GB 3760065 A GB3760065 A GB 3760065A GB 3760065 A GB3760065 A GB 3760065A GB 1115581 A GB1115581 A GB 1115581A
Authority
GB
United Kingdom
Prior art keywords
sheet
foaming
punches
cylinder
sponge rubber
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
GB3760065A
Inventor
Thomas Fernie Mcmahon
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.)
UNIROYAL Ltd
Original Assignee
UNIROYAL 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 UNIROYAL Ltd filed Critical UNIROYAL Ltd
Priority to GB3760065A priority Critical patent/GB1115581A/en
Publication of GB1115581A publication Critical patent/GB1115581A/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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/0277—Apparatus with continuous transport of the material to be cured
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/005—Avoiding skin formation; Making foams with porous surfaces
    • 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

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1,115,581. Moulding sponge rubber sheets; laminates. UNIROYAL Ltd. 23 Sept., 1966 [2 Sept., 1965], No. 37600/65. Headings B5A and B5N. Sponge rubber sheeting is made by calendering a rubber-blowing agent mixture into a sheet, punching holes in the sheet, and finally vulcanizing and foaming the sheet. The holes are of such a size as to remain open during the foaming, and the punched-out pieces are reintroduced into the calender, thus eliminating wastage. A backing layer such as hessian or felt may be applied to the foamed sheet. In the described embodiment, a sheet is calendered between rollers and then perforated by passage under a " Turret " punch having a series of frusto-conical punches 8 spaced in sets about an open-ended vertically reciprocable cylinder 7. The punched-out pieces are blown from inside the cylinder on to a conveyer whence they pass to a feed mill and are reintroduced into the calender. The perforated sheet is covered by a heavy fabric and passed between heated vulcanizing and foaming plates after which the fabric is removed and the blown sheet bonded to a hessian covering. If the punches become clogged and require attention the cylinder 7 is merely rotated to bring a new set of punches into the operative position.
GB3760065A 1965-09-02 1965-09-02 Improvements in and relating to sponge rubber sheeting Expired GB1115581A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3760065A GB1115581A (en) 1965-09-02 1965-09-02 Improvements in and relating to sponge rubber sheeting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3760065A GB1115581A (en) 1965-09-02 1965-09-02 Improvements in and relating to sponge rubber sheeting

Publications (1)

Publication Number Publication Date
GB1115581A true GB1115581A (en) 1968-05-29

Family

ID=10397667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3760065A Expired GB1115581A (en) 1965-09-02 1965-09-02 Improvements in and relating to sponge rubber sheeting

Country Status (1)

Country Link
GB (1) GB1115581A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155622A (en) * 1984-03-09 1985-09-25 De La Rue Syst Monitoring passage of sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2155622A (en) * 1984-03-09 1985-09-25 De La Rue Syst Monitoring passage of sheets

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