FR2233161A1 - Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface - Google Patents

Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface

Info

Publication number
FR2233161A1
FR2233161A1 FR7420817A FR7420817A FR2233161A1 FR 2233161 A1 FR2233161 A1 FR 2233161A1 FR 7420817 A FR7420817 A FR 7420817A FR 7420817 A FR7420817 A FR 7420817A FR 2233161 A1 FR2233161 A1 FR 2233161A1
Authority
FR
France
Prior art keywords
matl
mass
solid
under pressure
layer under
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.)
Withdrawn
Application number
FR7420817A
Other languages
French (fr)
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.)
STEGMEIER WILLIAM US
Original Assignee
STEGMEIER WILLIAM US
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 US37125373 external-priority patent/US3922131A/en
Application filed by STEGMEIER WILLIAM US filed Critical STEGMEIER WILLIAM US
Publication of FR2233161A1 publication Critical patent/FR2233161A1/en
Withdrawn legal-status Critical Current

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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Molding Of Porous Articles (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Finger-Pressure Massage (AREA)
  • Laminated Bodies (AREA)

Abstract

Low density thermoplastic mass esp. foam, e.g. polystyrene, polyethylene, polyurethane, is compacted to a high density mass by (a) raising the temp. of a fusion surface pref. formed by two spaced-apart- rollers, to at least the softening temp. of the matl. (b) applying a positive compression force forcing the low density mass in contact with the surface so that a layer of the mass melts and forms a high density mass, and (c) sepg. the layer of molten, high temp. matl. from the mass at the surface. Effects compacting in a controlled manner without degradation.
FR7420817A 1973-06-18 1974-06-14 Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface Withdrawn FR2233161A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37125373 US3922131A (en) 1973-06-18 1973-06-18 Apparatus for compacting a low density foam material into a high density foam material
US42454573A 1973-12-13 1973-12-13

Publications (1)

Publication Number Publication Date
FR2233161A1 true FR2233161A1 (en) 1975-01-10

Family

ID=27005304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7420817A Withdrawn FR2233161A1 (en) 1973-06-18 1974-06-14 Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface

Country Status (12)

Country Link
JP (1) JPS5034060A (en)
AU (1) AU7020574A (en)
DE (1) DE2428863A1 (en)
DK (1) DK324974A (en)
ES (2) ES427339A1 (en)
FI (1) FI179474A (en)
FR (1) FR2233161A1 (en)
IL (1) IL45018A0 (en)
LU (1) LU70340A1 (en)
NL (1) NL7408098A (en)
NO (1) NO742126L (en)
SE (1) SE7407743L (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002512A1 (en) * 1981-01-27 1982-08-05 Nagy Laszlo Method and device for the transformation of p.v.c.wastes
EP0493018A1 (en) * 1990-12-21 1992-07-01 Free-Flow Packaging Corporation System and method for densifying expanded plastic foam materials
US5286321A (en) * 1990-12-21 1994-02-15 Free-Flow Packaging Corporation System and method for densifying expanded plastic foam materials

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1221558B (en) * 1987-11-27 1990-07-12 Govoni Spa RECOVERY, SELECTION AND RECYCLING SYSTEM OF DISPOSABLE CONTAINERS IN PLASTIC MATERIALS
FI114299B (en) 2001-06-25 2004-09-30 Conenor Oy Method for handling various materials and material handling device
JP5529469B2 (en) * 2009-09-04 2014-06-25 株式会社山本製作所 Granulator
CN102198707A (en) * 2010-03-24 2011-09-28 常州协昌橡塑有限公司 Automatic tyre crushing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002512A1 (en) * 1981-01-27 1982-08-05 Nagy Laszlo Method and device for the transformation of p.v.c.wastes
EP0493018A1 (en) * 1990-12-21 1992-07-01 Free-Flow Packaging Corporation System and method for densifying expanded plastic foam materials
US5286321A (en) * 1990-12-21 1994-02-15 Free-Flow Packaging Corporation System and method for densifying expanded plastic foam materials

Also Published As

Publication number Publication date
SE7407743L (en) 1974-12-19
LU70340A1 (en) 1974-10-17
DK324974A (en) 1975-02-17
JPS5034060A (en) 1975-04-02
IL45018A0 (en) 1974-09-10
FI179474A (en) 1974-12-19
DE2428863A1 (en) 1975-01-09
AU7020574A (en) 1975-12-18
ES427339A1 (en) 1976-07-16
NO742126L (en) 1975-01-13
NL7408098A (en) 1974-12-20
ES431105A1 (en) 1976-11-01

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Legal Events

Date Code Title Description
ST Notification of lapse