GB1327399A - Process for the reticulation of a foamed material - Google Patents

Process for the reticulation of a foamed material

Info

Publication number
GB1327399A
GB1327399A GB5200470A GB5200470A GB1327399A GB 1327399 A GB1327399 A GB 1327399A GB 5200470 A GB5200470 A GB 5200470A GB 5200470 A GB5200470 A GB 5200470A GB 1327399 A GB1327399 A GB 1327399A
Authority
GB
United Kingdom
Prior art keywords
electrodes
foamed material
pair
high energy
nov
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
GB5200470A
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
Priority claimed from DE19691956304 external-priority patent/DE1956304A1/en
Priority claimed from DE19702049807 external-priority patent/DE2049807A1/en
Application filed by Individual filed Critical Individual
Publication of GB1327399A publication Critical patent/GB1327399A/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
    • C08J9/36—After-treatment
    • C08J9/38—Destruction of cell membranes
    • 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
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching

Abstract

1327399 Reticulating foamed material H HARTMEYER 2 Nov 1970 [8 Nov 1969 10 Oct 1970] 52004/70 Heading C3R Foamed material, particularly polyurethane foamed material, having partly or wholly closed cells is reticulated by discharging a high voltage high energy electrical discharge between a pair of electrodes arranged close to the material to be treated thus producing a high speed high energy shock wave passing through the material to be treated. The foamed material may be located close to and between a reflector wall capable of reflecting high speed high energy shock waves and a pair of electrodes or close to and between two pairs of electrodes. Reticulation may also take place under water. In a typical Example, a piece of polyurethane foam is placed in a stainless steel tube having a polished surface, a wire is pressed through a hole bored in the material, the ends of the wire being fixed to two electrodes, and a discharge is produced between the pair of electrodes to produce a completely open celled foam material.
GB5200470A 1969-11-08 1970-11-02 Process for the reticulation of a foamed material Expired GB1327399A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19691956304 DE1956304A1 (en) 1969-11-08 1969-11-08 Conversion of closed cell plastics foam to - open cell structure
DE19702049807 DE2049807A1 (en) 1970-10-10 1970-10-10 Conversion of closed cell plastics foam to - open cell structure

Publications (1)

Publication Number Publication Date
GB1327399A true GB1327399A (en) 1973-08-22

Family

ID=25758097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5200470A Expired GB1327399A (en) 1969-11-08 1970-11-02 Process for the reticulation of a foamed material

Country Status (11)

Country Link
BE (1) BE758237A (en)
CA (1) CA940675A (en)
CH (1) CH531407A (en)
DK (1) DK129563B (en)
FR (1) FR2067049B1 (en)
GB (1) GB1327399A (en)
HU (1) HU162251B (en)
LU (1) LU62018A1 (en)
NL (1) NL7016286A (en)
RO (1) RO56805A (en)
SE (1) SE356462B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105927A1 (en) * 2005-04-07 2006-10-12 Sartorius Biotech Gmbh Method for opening the film layer of plastic foam strip
WO2013029158A1 (en) * 2011-08-30 2013-03-07 Socpra - Sciences Et Génie S.E.C. Method and apparatus for reticulating foam material using shock waves in a gaseous environment
EP2727707A1 (en) 2012-11-05 2014-05-07 Recticel Process for the reticulation of a polymeric foam by thermal plasma, apparatus therefor and foam thus produced
EP4108407A1 (en) 2021-06-24 2022-12-28 ATL Schubs GmbH Method for manufacturing reticulated foams and apparatus therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5705115A (en) * 1996-04-29 1998-01-06 Shin-Etsu Polymer Co., Ltd. Method for the preparation of an air-permeable plug member

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1227274A (en) * 1958-01-17 1960-08-19 Kohlswa Jernverks Ab Improvements to processes and devices for pulverizing or decomposing solid materials
US3239585A (en) * 1962-05-11 1966-03-08 Dow Chemical Co Shock treatment of plastic foams
FR1490610A (en) * 1966-06-13 1967-08-04 Pechiney Saint Gobain Manufacturing process for water-permeable products

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006105927A1 (en) * 2005-04-07 2006-10-12 Sartorius Biotech Gmbh Method for opening the film layer of plastic foam strip
WO2013029158A1 (en) * 2011-08-30 2013-03-07 Socpra - Sciences Et Génie S.E.C. Method and apparatus for reticulating foam material using shock waves in a gaseous environment
EP2727707A1 (en) 2012-11-05 2014-05-07 Recticel Process for the reticulation of a polymeric foam by thermal plasma, apparatus therefor and foam thus produced
WO2014068030A1 (en) 2012-11-05 2014-05-08 Recticel Process for the reticulation of a polymeric foam by thermal plasma, apparatus therefor and foam thus produced
EP4108407A1 (en) 2021-06-24 2022-12-28 ATL Schubs GmbH Method for manufacturing reticulated foams and apparatus therefor

Also Published As

Publication number Publication date
BE758237A (en) 1971-04-01
SE356462B (en) 1973-05-28
CA940675A (en) 1974-01-29
DK129563C (en) 1975-03-24
RO56805A (en) 1974-07-01
HU162251B (en) 1973-01-29
FR2067049A1 (en) 1971-08-13
FR2067049B1 (en) 1975-01-10
CH531407A (en) 1972-12-15
NL7016286A (en) 1971-05-11
DK129563B (en) 1974-10-28
LU62018A1 (en) 1972-07-26

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees