SE8900541L - Producing expanded thermoplastic microspheres without agglomerates - by driving unexpanded microspheres under agitation before heating - Google Patents

Producing expanded thermoplastic microspheres without agglomerates - by driving unexpanded microspheres under agitation before heating

Info

Publication number
SE8900541L
SE8900541L SE8900541A SE8900541A SE8900541L SE 8900541 L SE8900541 L SE 8900541L SE 8900541 A SE8900541 A SE 8900541A SE 8900541 A SE8900541 A SE 8900541A SE 8900541 L SE8900541 L SE 8900541L
Authority
SE
Sweden
Prior art keywords
microspheres
under agitation
agglomerates
unexpanded
driving
Prior art date
Application number
SE8900541A
Other languages
Swedish (sv)
Other versions
SE8900541D0 (en
Inventor
J Petersen
Original Assignee
Casco Nobel Ab
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 Casco Nobel Ab filed Critical Casco Nobel Ab
Publication of SE8900541D0 publication Critical patent/SE8900541D0/en
Priority to AT89850198T priority Critical patent/ATE101823T1/en
Priority to DE68913235T priority patent/DE68913235T2/en
Priority to EP89850198A priority patent/EP0348372B1/en
Priority to ES89850198T priority patent/ES2050844T3/en
Priority to CA000603173A priority patent/CA1329685C/en
Priority to KR1019890008396A priority patent/KR0122457B1/en
Priority to AU36707/89A priority patent/AU620879B2/en
Priority to NZ229644A priority patent/NZ229644A/en
Priority to FI893040A priority patent/FI95354C/en
Priority to PT90950A priority patent/PT90950B/en
Priority to NO892604A priority patent/NO177089C/en
Priority to DK198903136A priority patent/DK173520B1/en
Priority to JP1159842A priority patent/JPH0829245B2/en
Publication of SE8900541L publication Critical patent/SE8900541L/en
Priority to US08/218,232 priority patent/US5484815A/en
Priority to US08/478,390 priority patent/US5585119A/en
Priority to KR1019970023596A priority patent/KR100196539B1/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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/021—Heat treatment of powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • 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
    • B29C44/3461—Making or treating expandable particles
    • B29C67/22—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/055—Polytetrafluoroethylene, i.e. PTFE

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Medicinal Preparation (AREA)

Abstract

Expanded thermoplastic microspheres are produced by heating unexpanded microspheres after they have been dried under agitation to a dry solids content exceeding 98 wt.%, pref. 99 wt.%. The microspheres, once dried, can be rewetted before expansion. The dried unexpanded microspheres are pref. expanded by heating them using a number of overhead IR lamps located above a belt conveyor having an endless belt on which they are delivered by a dosing device comprising a dosing screw and a vibrating feeder.
SE8900541A 1988-06-23 1989-02-16 Producing expanded thermoplastic microspheres without agglomerates - by driving unexpanded microspheres under agitation before heating SE8900541L (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
AT89850198T ATE101823T1 (en) 1988-06-23 1989-06-15 PROCESS AND APPARATUS FOR THE PRODUCTION OF EXPANDABLE THERMOPLASTIC MICROBALLS.
DE68913235T DE68913235T2 (en) 1988-06-23 1989-06-15 Method and device for producing expandable thermoplastic microspheres.
EP89850198A EP0348372B1 (en) 1988-06-23 1989-06-15 A process and a device for preparation of expanded thermoplastic microspheres
ES89850198T ES2050844T3 (en) 1988-06-23 1989-06-15 A PROCEDURE AND A DEVICE FOR THE PREPARATION OF EXPANDED THERMOPLASTIC MICROSPHERES.
CA000603173A CA1329685C (en) 1988-06-23 1989-06-19 Process and a device for preparation of expanded thermoplastic microspheres
KR1019890008396A KR0122457B1 (en) 1988-06-23 1989-06-19 A process and a device for preparation of expanded thermoplastic microspheres
FI893040A FI95354C (en) 1988-06-23 1989-06-21 Method and apparatus for producing expanded thermoplastic microspheres
AU36707/89A AU620879B2 (en) 1988-06-23 1989-06-21 A process and a device for preparation of expanded thermoplastic microspheres
NZ229644A NZ229644A (en) 1988-06-23 1989-06-21 Producing expanded thermoplastic microspheres by heating and apparatus for this process
PT90950A PT90950B (en) 1988-06-23 1989-06-22 PROCESS AND DEVICE FOR THE PREPARATION OF EXPANDED THERMOPLASTIC MICRO-SPHERES
NO892604A NO177089C (en) 1988-06-23 1989-06-22 Method and apparatus for producing expanded thermoplastic microspheres
DK198903136A DK173520B1 (en) 1988-06-23 1989-06-23 Method and apparatus for producing expanded thermoplastic microspheres
JP1159842A JPH0829245B2 (en) 1988-06-23 1989-06-23 Method and apparatus for producing expanded thermoplastic microspheres
US08/218,232 US5484815A (en) 1988-06-23 1994-03-28 Process for preparation of expanded thermoplastic microspheres
US08/478,390 US5585119A (en) 1988-06-23 1995-06-07 Device for preparation of expanded thermoplastic microspheres
KR1019970023596A KR100196539B1 (en) 1988-06-23 1997-06-09 A process and a device for preparation of expanded thermoplastic microspheres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8802387A SE8802387D0 (en) 1988-06-23 1988-06-23 PROCEDURE FOR PREPARING EXPANDED THERMOPLASTIC MICROSPHERES

Publications (2)

Publication Number Publication Date
SE8900541D0 SE8900541D0 (en) 1989-02-16
SE8900541L true SE8900541L (en) 1989-12-24

Family

ID=20372735

Family Applications (2)

Application Number Title Priority Date Filing Date
SE8802387A SE8802387D0 (en) 1988-06-23 1988-06-23 PROCEDURE FOR PREPARING EXPANDED THERMOPLASTIC MICROSPHERES
SE8900541A SE8900541L (en) 1988-06-23 1989-02-16 Producing expanded thermoplastic microspheres without agglomerates - by driving unexpanded microspheres under agitation before heating

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE8802387A SE8802387D0 (en) 1988-06-23 1988-06-23 PROCEDURE FOR PREPARING EXPANDED THERMOPLASTIC MICROSPHERES

Country Status (2)

Country Link
KR (1) KR0122457B1 (en)
SE (2) SE8802387D0 (en)

Also Published As

Publication number Publication date
KR0122457B1 (en) 1997-11-12
KR910000221A (en) 1991-01-29
SE8900541D0 (en) 1989-02-16
SE8802387D0 (en) 1988-06-23

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