CH565028A5 - Fine-pore resin foam production - Google Patents

Fine-pore resin foam production

Info

Publication number
CH565028A5
CH565028A5 CH452673A CH452673A CH565028A5 CH 565028 A5 CH565028 A5 CH 565028A5 CH 452673 A CH452673 A CH 452673A CH 452673 A CH452673 A CH 452673A CH 565028 A5 CH565028 A5 CH 565028A5
Authority
CH
Switzerland
Prior art keywords
foam
mixing
fine pore
homogenous
finished
Prior art date
Application number
CH452673A
Original Assignee
Wilmsen Hans
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 Wilmsen Hans filed Critical Wilmsen Hans
Priority to CH452673A priority Critical patent/CH565028A5/en
Priority to DE2440792A priority patent/DE2440792C3/en
Priority claimed from DE2440792A external-priority patent/DE2440792C3/en
Priority to FR7430097A priority patent/FR2283774A1/en
Priority to NL7411828A priority patent/NL176239C/en
Publication of CH565028A5 publication Critical patent/CH565028A5/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7404—Mixing devices specially adapted for foamable substances
    • B29B7/7409—Mixing devices specially adapted for foamable substances with supply of gas
    • B29B7/7419—Mixing devices specially adapted for foamable substances with supply of gas with static or injector mixer elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Homogenous fine pore, synthetic resin, (alcohol) based, foams are prepd. by (i) converting the resin foamed by a foaming agent and compressed gas from a coarse to a fine pore foam in a foam chamber filled with beads of differing sizes, then (ii) mixing it with a catalyst in a mixing chamber downstream and separate by a circulation pipe, and (iii) supplying additives to the finished, non-hardened, carrier foam. Foaming and mixing process of all the solid and liquid matls. is thus controlled solely by pressure, while gas or air is used as the pressurised conveying and mixing medium and the flow of foam in the mixing chamber is not disturbed by built-in components. Under optimum conditions, the finished foam product is thus homogenous with a uniform fine pore cellular structure, with a fixed compsn. minimum shrinkage, good heat insulating and sound absorption properties, and high mech. strength in accordance with its density. Catalyst usage is also reduced. - CH-565028 A Homogenous fine pore, synthetic resin, (alcohol) based, foams are prepd. by (i) converting the resin foamed by a foaming agent and compressed gas from a coarse to a fine pore foam in a foam chamber filled with beads of differing sizes, then (ii) mixing it with a catalyst in a mixing chamber downstream and separate by a circulation pipe, and (iii) supplying additives to the finished, non-hardened, carrier foam. Foaming and mixing process of all the solid and liquid matls. is thus controlled solely by pressure, while gas or air is used as the pressurised conveying and mixing medium and the flow of foam in the mixing chamber is not disturbed by built-in components. Under optimum conditions, the finished foam product is thus homogenous with a uniform fine pore cellular structure, with a fixed compsn. minimum shrinkage, good heat insulating and sound absorption properties, and high mech. strength in accordance with its density. Catalyst usage is also reduced.
CH452673A 1973-03-29 1973-03-29 Fine-pore resin foam production CH565028A5 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH452673A CH565028A5 (en) 1973-03-29 1973-03-29 Fine-pore resin foam production
DE2440792A DE2440792C3 (en) 1973-03-29 1974-08-26 Device for the continuous production of homogeneous, fine-pored synthetic resin foams on an aqueous or aqueous alcoholic basis
FR7430097A FR2283774A1 (en) 1973-03-29 1974-09-04 Fine pore aminoplastic foam prodn. esp. in building construction - mixer with controls at spray gun, doubles output
NL7411828A NL176239C (en) 1973-03-29 1974-09-05 Apparatus for the continuous production of homogeneous plastic foams with fine pores based on water or water and alcohol.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH452673A CH565028A5 (en) 1973-03-29 1973-03-29 Fine-pore resin foam production
DE2440792A DE2440792C3 (en) 1973-03-29 1974-08-26 Device for the continuous production of homogeneous, fine-pored synthetic resin foams on an aqueous or aqueous alcoholic basis
NL7411828A NL176239C (en) 1973-03-29 1974-09-05 Apparatus for the continuous production of homogeneous plastic foams with fine pores based on water or water and alcohol.

Publications (1)

Publication Number Publication Date
CH565028A5 true CH565028A5 (en) 1975-08-15

Family

ID=27174881

Family Applications (1)

Application Number Title Priority Date Filing Date
CH452673A CH565028A5 (en) 1973-03-29 1973-03-29 Fine-pore resin foam production

Country Status (2)

Country Link
CH (1) CH565028A5 (en)
NL (1) NL176239C (en)

Also Published As

Publication number Publication date
NL176239B (en) 1984-10-16
NL176239C (en) 1985-03-18
NL7411828A (en) 1976-03-09

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Legal Events

Date Code Title Description
PL Patent ceased