ZA955926B - Method and apparatus for foam manufacture by means of carbon dioxide dissolved under pressure - Google Patents

Method and apparatus for foam manufacture by means of carbon dioxide dissolved under pressure

Info

Publication number
ZA955926B
ZA955926B ZA955926A ZA955926A ZA955926B ZA 955926 B ZA955926 B ZA 955926B ZA 955926 A ZA955926 A ZA 955926A ZA 955926 A ZA955926 A ZA 955926A ZA 955926 B ZA955926 B ZA 955926B
Authority
ZA
South Africa
Prior art keywords
carbon dioxide
under pressure
dissolved under
dioxide dissolved
foam manufacture
Prior art date
Application number
ZA955926A
Inventor
Wilfried Ebeling
Robert Eiben
Ferdinand Althausen
Reiner Raffel
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of ZA955926B publication Critical patent/ZA955926B/en

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
    • C08J9/12—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 by a physical blowing agent
    • C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
    • 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
    • B29C44/3469—Cell or pore nucleation
    • B29C44/3473—Cell or pore nucleation by shearing forces
    • 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
    • B29C44/3469—Cell or pore nucleation
    • B29C44/348—Cell or pore nucleation by regulating the temperature and/or the pressure, e.g. suppression of foaming until the pressure is rapidly decreased
    • 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
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
ZA955926A 1994-07-18 1995-07-17 Method and apparatus for foam manufacture by means of carbon dioxide dissolved under pressure ZA955926B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4425319A DE4425319A1 (en) 1994-07-18 1994-07-18 Polymer foam mfr. using carbon di:oxide blowing agent and process appts.

Publications (1)

Publication Number Publication Date
ZA955926B true ZA955926B (en) 1996-02-21

Family

ID=6523456

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA955926A ZA955926B (en) 1994-07-18 1995-07-17 Method and apparatus for foam manufacture by means of carbon dioxide dissolved under pressure

Country Status (2)

Country Link
DE (1) DE4425319A1 (en)
ZA (1) ZA955926B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6846396A (en) * 1995-08-14 1997-03-12 Massachusetts Institute Of Technology Gear throttle as a nucleation device in a continuous microcellular extrusion system
DE19620991A1 (en) * 1996-05-24 1997-11-27 Hennecke Gmbh Process and device for foam production using carbon dioxide dissolved under pressure
EP0923443B1 (en) * 1996-08-27 2002-11-27 Trexel Inc. Method and apparatus for polymer foam extrusion, in particular microcellular foam
US6884377B1 (en) 1996-08-27 2005-04-26 Trexel, Inc. Method and apparatus for microcellular polymer extrusion
DE102006051311B4 (en) 2006-10-31 2016-12-29 Hennecke Gmbh Process for producing polyurethane block foam
DE102013016661A1 (en) * 2013-10-09 2015-04-09 Hennecke Gmbh Process for the continuous production of a strand of reactive plastic
CN115157528B (en) * 2022-07-21 2024-03-05 浙江谦达机电科技有限公司 Foaming machine head and foaming machine using same

Also Published As

Publication number Publication date
DE4425319A1 (en) 1996-01-25

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