GB749052A - Improvements in or relating to the manufacture of cellular material - Google Patents

Improvements in or relating to the manufacture of cellular material

Info

Publication number
GB749052A
GB749052A GB21582/52A GB2158252A GB749052A GB 749052 A GB749052 A GB 749052A GB 21582/52 A GB21582/52 A GB 21582/52A GB 2158252 A GB2158252 A GB 2158252A GB 749052 A GB749052 A GB 749052A
Authority
GB
United Kingdom
Prior art keywords
mould
parts
rubber
expansion
mix
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
GB21582/52A
Inventor
Pascal Jules Carpentier
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.)
Equipment Menager Et Ind E M I
Original Assignee
Equipment Menager Et Ind E M I
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 Equipment Menager Et Ind E M I filed Critical Equipment Menager Et Ind E M I
Priority to GB21582/52A priority Critical patent/GB749052A/en
Publication of GB749052A publication Critical patent/GB749052A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/10—Applying counter-pressure during expanding
    • 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
    • B29C44/58—Moulds
    • B29C44/586—Moulds with a cavity increasing in size during foaming

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

749,052. Moulding cellular rubber and resin EQUIPMENT MENAGER ET INDUSTRIEL E. M. I. Aug. 27, 1953 [Aug. 27, 1952], No. 21582/52. Addition to 652,696, Class 87(2) In a process of the kind described in the parent Specification the polycellular moulding material is allowed to expand in a mould having a yielding wall. A shown, a. hydraulically-operated ram 21 co-operates with a mould 18 containing the mix and resists the expansion of the mix on heating to such a degree that only an expansion between 10 and 30 per cent of the original volume is permitted. The platens 20, 23 are heated by steam in passages 27, 28. In an example, a rubber mix is used comprising 100 parts of premasticated rubber, 1.5 parts of stearic acid, 5 parts of zinc oxide, 10 parts of sulphur, 0.4 parts of phenoxy guanidine, 12 parts of finely powdered azo-isobutyric acid dinitrile, as the blowing agent. The mould 18 was filled to the top and the ram 21 held down on it, being adjusted so that it would yield on a pressure of 500 kg./cm<2>. The whole was then heated to a temperature of 110‹C. when an expansion between 10 and 30 per cent of the original volume occured. The heating was then continued to cure the rubber, the mould cooled to atmospheric temperature and the moulded material removed from the mould when it expanded under atmospheric pressure and was heated again under conditions allowing it to expand more, the final volume being about ten times the original of the content in mould 18. Another example is given.
GB21582/52A 1952-08-27 1952-08-27 Improvements in or relating to the manufacture of cellular material Expired GB749052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB21582/52A GB749052A (en) 1952-08-27 1952-08-27 Improvements in or relating to the manufacture of cellular material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21582/52A GB749052A (en) 1952-08-27 1952-08-27 Improvements in or relating to the manufacture of cellular material

Publications (1)

Publication Number Publication Date
GB749052A true GB749052A (en) 1956-05-16

Family

ID=10165334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21582/52A Expired GB749052A (en) 1952-08-27 1952-08-27 Improvements in or relating to the manufacture of cellular material

Country Status (1)

Country Link
GB (1) GB749052A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115010B (en) * 1957-02-21 1961-10-12 Basf Ag Process for the production of porous moldings from thermoplastics
DE3526949A1 (en) * 1985-07-27 1987-02-05 Heinrich Moser Process for completely foaming rigid foam slabs or blocks intended in particular for impact sound insulation and device for carrying out the process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115010B (en) * 1957-02-21 1961-10-12 Basf Ag Process for the production of porous moldings from thermoplastics
DE3526949A1 (en) * 1985-07-27 1987-02-05 Heinrich Moser Process for completely foaming rigid foam slabs or blocks intended in particular for impact sound insulation and device for carrying out the process

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