IT971006B - PROCESS FOR MANUFACTURING A PLASTIC COVER FILM AND EXTRUSION HEAD FOR THE PRACTICAL REALIZATION OF THIS PROCEDURE - Google Patents

PROCESS FOR MANUFACTURING A PLASTIC COVER FILM AND EXTRUSION HEAD FOR THE PRACTICAL REALIZATION OF THIS PROCEDURE

Info

Publication number
IT971006B
IT971006B IT31830/72A IT3183072A IT971006B IT 971006 B IT971006 B IT 971006B IT 31830/72 A IT31830/72 A IT 31830/72A IT 3183072 A IT3183072 A IT 3183072A IT 971006 B IT971006 B IT 971006B
Authority
IT
Italy
Prior art keywords
procedure
manufacturing
cover film
extrusion head
plastic cover
Prior art date
Application number
IT31830/72A
Other languages
Italian (it)
Original Assignee
Sig Schweiz Industrieges
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 Sig Schweiz Industrieges filed Critical Sig Schweiz Industrieges
Application granted granted Critical
Publication of IT971006B publication Critical patent/IT971006B/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
    • 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
IT31830/72A 1971-11-19 1972-11-17 PROCESS FOR MANUFACTURING A PLASTIC COVER FILM AND EXTRUSION HEAD FOR THE PRACTICAL REALIZATION OF THIS PROCEDURE IT971006B (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 (1)

Publication Number Publication Date
IT971006B true IT971006B (en) 1974-04-30

Family

ID=4420859

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31830/72A IT971006B (en) 1971-11-19 1972-11-17 PROCESS FOR MANUFACTURING A PLASTIC COVER FILM AND EXTRUSION HEAD FOR THE PRACTICAL REALIZATION OF THIS PROCEDURE

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)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881784A (en) * 1989-02-03 1989-11-21 General Motors Corporation ABS pressure apply algorithm
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB925657A (en) * 1958-09-18 1963-05-08 Plastic Textile Access Ltd Improvements in and relating to ribbed plastic material
CH461784A (en) * 1968-01-05 1968-08-31 Weyermann Viktor Process for the production of a continuously blown plastic film tube and nozzle head for carrying out the process

Also Published As

Publication number Publication date
JPS4862856A (en) 1973-09-01
CH549456A (en) 1974-05-31
FR2160546B1 (en) 1976-01-30
FR2160546A1 (en) 1973-06-29
DE2256756A1 (en) 1973-05-24

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