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FR1416667A - Process for the manufacture of porous bodies in thermoplastic material - Google Patents

Process for the manufacture of porous bodies in thermoplastic material

Info

Publication number
FR1416667A
FR1416667A FR994750A FR994750A FR1416667A FR 1416667 A FR1416667 A FR 1416667A FR 994750 A FR994750 A FR 994750A FR 994750 A FR994750 A FR 994750A FR 1416667 A FR1416667 A FR 1416667A
Authority
FR
France
Prior art keywords
manufacture
thermoplastic material
porous bodies
porous
bodies
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
FR994750A
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.)
Wmb International AB
Original Assignee
Wmb International 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
Priority claimed from SE12624/63A external-priority patent/SE318703B/xx
Application filed by Wmb International AB filed Critical Wmb International AB
Priority to FR994750A priority Critical patent/FR1416667A/en
Application granted granted Critical
Publication of FR1416667A publication Critical patent/FR1416667A/en
Expired 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
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • 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
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/54—Screws with additional forward-feeding elements
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/55—Screws having reverse-feeding elements
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR994750A 1963-11-15 1964-11-13 Process for the manufacture of porous bodies in thermoplastic material Expired FR1416667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR994750A FR1416667A (en) 1963-11-15 1964-11-13 Process for the manufacture of porous bodies in thermoplastic material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE12624/63A SE318703B (en) 1963-11-15 1963-11-15
FR994750A FR1416667A (en) 1963-11-15 1964-11-13 Process for the manufacture of porous bodies in thermoplastic material

Publications (1)

Publication Number Publication Date
FR1416667A true FR1416667A (en) 1965-11-05

Family

ID=26211120

Family Applications (1)

Application Number Title Priority Date Filing Date
FR994750A Expired FR1416667A (en) 1963-11-15 1964-11-13 Process for the manufacture of porous bodies in thermoplastic material

Country Status (1)

Country Link
FR (1) FR1416667A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333636A1 (en) * 1975-12-05 1977-07-01 Bayer Ag DEVICE FOR THE EXTRUSION IN SEMI-PRODUCTS OF THERMOPLASTIC MATERIALS SENSITIVE TO HEAT
DE3406665A1 (en) * 1984-02-24 1985-09-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Screw extruder for processing explosives
US5044757A (en) * 1988-12-10 1991-09-03 Hermann, Berstorff Maschinenbaum Gmbh Extrusion device for incorporating additives
US5314245A (en) * 1992-02-28 1994-05-24 Blach Josef A Arrangement for mixing and kneading of materials with a screw shaft and at least one screw element connected with one another by wedges
DE4426441A1 (en) * 1994-07-26 1996-02-01 Werner & Pfleiderer Two-shaft screw machine, in particular two-shaft extruder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333636A1 (en) * 1975-12-05 1977-07-01 Bayer Ag DEVICE FOR THE EXTRUSION IN SEMI-PRODUCTS OF THERMOPLASTIC MATERIALS SENSITIVE TO HEAT
DE3406665A1 (en) * 1984-02-24 1985-09-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Screw extruder for processing explosives
US5044757A (en) * 1988-12-10 1991-09-03 Hermann, Berstorff Maschinenbaum Gmbh Extrusion device for incorporating additives
US5314245A (en) * 1992-02-28 1994-05-24 Blach Josef A Arrangement for mixing and kneading of materials with a screw shaft and at least one screw element connected with one another by wedges
DE4426441A1 (en) * 1994-07-26 1996-02-01 Werner & Pfleiderer Two-shaft screw machine, in particular two-shaft extruder

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