FR2354872A1 - PROCESS FOR PREPARING INFLATABLE PARTICLES OF OLEFIN POLYMERS - Google Patents

PROCESS FOR PREPARING INFLATABLE PARTICLES OF OLEFIN POLYMERS

Info

Publication number
FR2354872A1
FR2354872A1 FR7717659A FR7717659A FR2354872A1 FR 2354872 A1 FR2354872 A1 FR 2354872A1 FR 7717659 A FR7717659 A FR 7717659A FR 7717659 A FR7717659 A FR 7717659A FR 2354872 A1 FR2354872 A1 FR 2354872A1
Authority
FR
France
Prior art keywords
olefin polymers
bungs
extruder
particles
cylindrical
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.)
Granted
Application number
FR7717659A
Other languages
French (fr)
Other versions
FR2354872B3 (en
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of FR2354872A1 publication Critical patent/FR2354872A1/en
Application granted granted Critical
Publication of FR2354872B3 publication Critical patent/FR2354872B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • 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
    • C08J9/16—Making expandable particles
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

On mélange les polymères d'oléfines avec des agents gonflants, on chauffe le mélange, et on le fait passer dans une boudineuse, d'où il sort sous forme de bondons à section circulaire d'épaisseur 0,5 à 5 mm qu'on découpe en particules de forme cylindrique. A la sortie de la boudineuse, les bondons passent dans un bain d'eau à température ambiante où ils sont étirés de 2 à 40 fois leur longueur initiale et, après refroidissement, découpés en particules de forme cylindrique dont les dimensions satisfont à la relationThe olefin polymers are mixed with blowing agents, the mixture is heated, and it is passed through an extruder, from which it comes out in the form of bungs with a circular section of thickness 0.5 to 5 mm which cutting into cylindrical particles. On leaving the extruder, the bungs pass through a water bath at room temperature where they are stretched from 2 to 40 times their initial length and, after cooling, cut into cylindrical-shaped particles whose dimensions satisfy the relation

FR7717659A 1976-06-16 1977-06-09 PROCESS FOR PREPARING INFLATABLE PARTICLES OF OLEFIN POLYMERS Granted FR2354872A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762626968 DE2626968A1 (en) 1976-06-16 1976-06-16 PRODUCTION OF FOAMABLE PARTICLES FROM OLEFINE POLYMERIZES

Publications (2)

Publication Number Publication Date
FR2354872A1 true FR2354872A1 (en) 1978-01-13
FR2354872B3 FR2354872B3 (en) 1980-03-07

Family

ID=5980684

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717659A Granted FR2354872A1 (en) 1976-06-16 1977-06-09 PROCESS FOR PREPARING INFLATABLE PARTICLES OF OLEFIN POLYMERS

Country Status (5)

Country Link
BE (1) BE855584A (en)
DE (1) DE2626968A1 (en)
FR (1) FR2354872A1 (en)
GB (1) GB1577541A (en)
IT (1) IT1078488B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19547398A1 (en) 1995-12-19 1997-06-26 Huels Chemische Werke Ag Process for the production of foamable plastic granules
US20170002167A1 (en) * 2015-06-30 2017-01-05 Sekisui Voltek, Llc Foamable particle and method of use

Also Published As

Publication number Publication date
BE855584A (en) 1977-12-12
FR2354872B3 (en) 1980-03-07
DE2626968A1 (en) 1977-12-29
IT1078488B (en) 1985-05-08
GB1577541A (en) 1980-10-22

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