GB531806A - Improvements in methods of sponging rubber or similar materials - Google Patents

Improvements in methods of sponging rubber or similar materials

Info

Publication number
GB531806A
GB531806A GB22464/39A GB2246439A GB531806A GB 531806 A GB531806 A GB 531806A GB 22464/39 A GB22464/39 A GB 22464/39A GB 2246439 A GB2246439 A GB 2246439A GB 531806 A GB531806 A GB 531806A
Authority
GB
United Kingdom
Prior art keywords
rubber
temperature
pressure
sponging
methods
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
GB22464/39A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB531806A publication Critical patent/GB531806A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • B29C44/3446—Feeding the blowing agent
    • 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

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

531,806. Sponge rubber. CORDREY, A. J. Aug. 2, 1939, No. 22464. Convention date, April 25. Drawings to Specification. [Class 70] Sponge rubber is made by subjecting a mix to heat and gas pressure until it is impregnated, releasing the pressure to cause the rubber to expand, without rise of temperature, and after expansion, raising the temperature to vulcanize the mix. The temperature of impregnation and expansion may be 130-160‹ F., suitably 140‹ F., and the pressure 140-300 lbs. per square inch, suitably 165. When the stock is impregnated, the pressure is gradually reduced to atmospheric while the temperature is not allowed to rise. The expanded stock is then vulcanized at 185-210‹ F.
GB22464/39A 1939-04-25 1939-08-02 Improvements in methods of sponging rubber or similar materials Expired GB531806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US531806XA 1939-04-25 1939-04-25

Publications (1)

Publication Number Publication Date
GB531806A true GB531806A (en) 1941-01-10

Family

ID=21982441

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22464/39A Expired GB531806A (en) 1939-04-25 1939-08-02 Improvements in methods of sponging rubber or similar materials

Country Status (1)

Country Link
GB (1) GB531806A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113285361A (en) * 2021-05-27 2021-08-20 河南安益达电工有限公司 Self-moving anti-seepage outdoor power distribution cabinet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113285361A (en) * 2021-05-27 2021-08-20 河南安益达电工有限公司 Self-moving anti-seepage outdoor power distribution cabinet
CN113285361B (en) * 2021-05-27 2024-01-30 河南安益达电工有限公司 Self-moving type anti-seepage outdoor power distribution cabinet

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