FR2160546A1 - Tubular film extrusion - with drive mechanism to rotate the mandrel and/or the extruder head - Google Patents

Tubular film extrusion - with drive mechanism to rotate the mandrel and/or the extruder head

Info

Publication number
FR2160546A1
FR2160546A1 FR7240741A FR7240741A FR2160546A1 FR 2160546 A1 FR2160546 A1 FR 2160546A1 FR 7240741 A FR7240741 A FR 7240741A FR 7240741 A FR7240741 A FR 7240741A FR 2160546 A1 FR2160546 A1 FR 2160546A1
Authority
FR
France
Prior art keywords
mandrel
extruder head
rotate
drive mechanism
tubular film
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
FR7240741A
Other languages
French (fr)
Other versions
FR2160546B1 (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.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
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 Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Publication of FR2160546A1 publication Critical patent/FR2160546A1/en
Application granted granted Critical
Publication of FR2160546B1 publication Critical patent/FR2160546B1/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
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending

Abstract

The action of rotating one or both the extruder head and mandrel has the effect of displacing the inner surface of the extruded tubular thermoplastic film. The orientation of the macro-molecular chain structure is modified through the thickness of the film which prevents join lines from the molten strips, from the distributor which make up the tubular profile, developing potential weak zones in the final tubular film material.
FR7240741A 1971-11-19 1972-11-16 Tubular film extrusion - with drive mechanism to rotate the mandrel and/or the extruder head Granted FR2160546A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1686071A CH549456A (en) 1971-11-19 1971-11-19 METHOD FOR MANUFACTURING A PLASTIC FILM.

Publications (2)

Publication Number Publication Date
FR2160546A1 true FR2160546A1 (en) 1973-06-29
FR2160546B1 FR2160546B1 (en) 1976-01-30

Family

ID=4420859

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7240741A Granted FR2160546A1 (en) 1971-11-19 1972-11-16 Tubular film extrusion - with drive mechanism to rotate the mandrel and/or the extruder head

Country Status (5)

Country Link
JP (1) JPS4862856A (en)
CH (1) CH549456A (en)
DE (1) DE2256756A1 (en)
FR (1) FR2160546A1 (en)
IT (1) IT971006B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380882A2 (en) * 1989-02-03 1990-08-08 General Motors Corporation Wheel lock control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1058214C (en) * 1995-06-26 2000-11-08 奈克斯特罗姆·霍尔丁公司 Extrusion apparatus and method for orienting plastic material by using an extrusion apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364895A (en) * 1958-09-18 1962-10-15 Plastic Textile Access Ltd Plastic ribbed sheet extrusion device
FR1599634A (en) * 1968-01-05 1970-07-15

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH364895A (en) * 1958-09-18 1962-10-15 Plastic Textile Access Ltd Plastic ribbed sheet extrusion device
FR1599634A (en) * 1968-01-05 1970-07-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0380882A2 (en) * 1989-02-03 1990-08-08 General Motors Corporation Wheel lock control
EP0380882A3 (en) * 1989-02-03 1992-01-15 General Motors Corporation Wheel lock control

Also Published As

Publication number Publication date
JPS4862856A (en) 1973-09-01
CH549456A (en) 1974-05-31
FR2160546B1 (en) 1976-01-30
DE2256756A1 (en) 1973-05-24
IT971006B (en) 1974-04-30

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Legal Events

Date Code Title Description
ST Notification of lapse