IE39073B1 - Method and apparatus for the manufacture of extrudates of structural foam thermoplastics material - Google Patents

Method and apparatus for the manufacture of extrudates of structural foam thermoplastics material

Info

Publication number
IE39073B1
IE39073B1 IE564/74A IE56474A IE39073B1 IE 39073 B1 IE39073 B1 IE 39073B1 IE 564/74 A IE564/74 A IE 564/74A IE 56474 A IE56474 A IE 56474A IE 39073 B1 IE39073 B1 IE 39073B1
Authority
IE
Ireland
Prior art keywords
shape
fluid
die
extruded
section
Prior art date
Application number
IE564/74A
Other versions
IE39073L (en
Original Assignee
Charbonnages Ste Chimique
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 Charbonnages Ste Chimique filed Critical Charbonnages Ste Chimique
Publication of IE39073L publication Critical patent/IE39073L/en
Publication of IE39073B1 publication Critical patent/IE39073B1/en

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
    • B29C44/50—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
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/87—Cooling
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels

Abstract

1450990 Controlling dimensions of extruded foam SOC CHIMIQUE DES CHARBONNAGES 13 March 1974 [16 March 1973] 11252/74 Heading B5A [Also in Division C3] A thermoplastic polymer containing a foaming agent, is extruded to foam upon issuing from an extrusion die and, at the exit of the die, is differentially cooled around its periphery by fluid pressure jets to effect expansion differentially to a shape at least similar to that of the shape of a sizing die through which it passes, so that friction is reduced in drawing the shape through the sizing die. The sized shape is cooled in passage through water tanks. The fluid may comprise cold compressed air, e.g. at 20[SINGLE LEFT-POINTING ANGLE QUOTATION MARK] C., or other gas, or a suspension of water in air. The differential cooling may be effected by differing pressure and/or temperature of the fluid. In Example (1), the polymer comprises high impact polystyrene containing polybutadiene foamed with zeolite, the extrusion die shape 1 being as shown in Fig. 3, or in Fig. 1 (not shown), and the sizing die shape being as shown in Fig. 2. The fluid cooling is effected by two (or four or eight) compressed air or water suspension blowing devices 3 and 4, each comprising one or more orifices, with the upper device 3 operating at a higher pressure than the lower device 4. Figs. 5 and 6 (not shown) show variations of shape effected by varying the fluid pressures. In Example (2), a similar high impact polystyrene foamed with azodicarbonamide is extruded from the Fig. 7 die shape, to produce a rectilinear sided "L"-section, the cooling fluid being directed at different pressures from three locations across the top of the extruded section, and locations at either side and at the bottom of the section. In Examples (3) and (4), crystal polystyrene, or rigid P.V.C., containing azodicarbonamide is extruded from the die 1a of Fig. 10, to produce a rectangular section, using upper and lower 3, 4, and opposite lateral fluid blowing devices operating at different pressures. Foam densities are stated. The differential cooling may produce a variable surface around the article comprising a smooth skin, a rough skin and/or the absence of a skin. (From GB1450990 A) [FR2221269A1]
IE564/74A 1973-03-16 1974-03-15 Method and apparatus for the manufacture of extrudates of structural foam thermoplastics material IE39073B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7309609A FR2221269B1 (en) 1973-03-16 1973-03-16

Publications (2)

Publication Number Publication Date
IE39073L IE39073L (en) 1974-09-16
IE39073B1 true IE39073B1 (en) 1978-08-02

Family

ID=9116449

Family Applications (1)

Application Number Title Priority Date Filing Date
IE564/74A IE39073B1 (en) 1973-03-16 1974-03-15 Method and apparatus for the manufacture of extrudates of structural foam thermoplastics material

Country Status (13)

Country Link
JP (1) JPS502765A (en)
BE (1) BE811998A (en)
DE (1) DE2412364C3 (en)
ES (1) ES424352A1 (en)
FR (1) FR2221269B1 (en)
GB (1) GB1450990A (en)
IE (1) IE39073B1 (en)
IN (1) IN140819B (en)
IT (1) IT1008429B (en)
LU (1) LU69613A1 (en)
NL (1) NL7403400A (en)
NO (1) NO143657C (en)
SE (1) SE401998B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198356U (en) * 1975-02-05 1976-08-06
JPS58196490U (en) * 1982-06-25 1983-12-27 キヨ−ラク株式会社 plastic bulkhead duct
JPS59163284U (en) * 1983-04-18 1984-11-01 三菱電機株式会社 double layer pipe
CN104645657A (en) * 2013-11-15 2015-05-27 嘉兴市南洋塑料化工有限公司 System of reducing heating loss of methyl tetrahydrophthalic anhydride and method thereof

Also Published As

Publication number Publication date
LU69613A1 (en) 1974-10-09
NO143657B (en) 1980-12-15
FR2221269A1 (en) 1974-10-11
GB1450990A (en) 1976-09-29
DE2412364B2 (en) 1980-03-27
NL7403400A (en) 1974-09-18
JPS502765A (en) 1975-01-13
BE811998A (en) 1974-09-09
IE39073L (en) 1974-09-16
ES424352A1 (en) 1976-06-01
NO143657C (en) 1981-03-25
IN140819B (en) 1976-12-25
NO740903L (en) 1974-09-17
FR2221269B1 (en) 1976-05-21
DE2412364C3 (en) 1980-11-27
SE401998B (en) 1978-06-12
DE2412364A1 (en) 1974-09-19
IT1008429B (en) 1976-11-10

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