GB818583A - Making and packaging flat or tubular film in reel form - Google Patents

Making and packaging flat or tubular film in reel form

Info

Publication number
GB818583A
GB818583A GB23676/55A GB2367655A GB818583A GB 818583 A GB818583 A GB 818583A GB 23676/55 A GB23676/55 A GB 23676/55A GB 2367655 A GB2367655 A GB 2367655A GB 818583 A GB818583 A GB 818583A
Authority
GB
United Kingdom
Prior art keywords
extruder
film
collapsed
tubular film
rotation
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
GB23676/55A
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
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 Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of GB818583A publication Critical patent/GB818583A/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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

In the production of films by extruding thermoplastic material through an annular orifice of uniform width, inflating the tubular film by introducing into it a gas at superatmospheric pressure, collapsing the film, and thereafter rolling up longitudinally the collapsed or flattened tubular film or flat film cut therefrom, the entire extruder, including the means for melting the plastic and forcing it under pressure to the extruder head, is rotated about the extrusion axis whilst the collapsed film is restrained against rotation, the extent of the rotation of the extruder in one direction before any reversal in the direction of rotation being such that all irregularities in thickness are distributed across the entire width of the rolled final product in successive convolutions thereof. As shown, one end of the extruder 1 is mounted on the circular track 2, wth the other end centred on the pivot bearing 3 and holding the extrusion die head 4 constantly centred above it. The wheels 6 support the outer end of the extruder on the track. The thermoplastic material in particulate form is fed to the extruder through the hopper 8. The motor and other equipment for operating the extruder are enclosed in the housing 9. The drive motor 11, through the speed reduction gear 12, rotates the drive pinion 14 which cooperates with the circular rack 15 on the circular track, causing the pinion to traverse the track and so rotate the entire extruder about the extrusion axis. The direction of rotation of the extruder is reversed after it has rotated <PICT:0818583/IV (a)/1> through nearly 360 degrees by means of a cam which is mounted on the circular rack 15 and actuates a reversing switch. The extruder and its accessories are mounted on the platform 17. The die head includes means (not shown) for inflating the extruded tubular film 22 and thus stretching the film laterally. The tubular film 22 is gradually collapsed by rollers 24 and finally collapsed by rollers 26 urged together by pressure cylinder 25. The collapsed film 32, after leaving the rollers 26, passes over cooling drums 30, supported on the frame 31, which also supports the trimming knives 35 which trim the folded edges from the flattened tubular film with formation of two separate flat films 321, 3211, which are collected on the wind-up rolls 32a, 32b respectively. Alternatively, the collapsed tubular film may be wound directly on the wind-up roll 36 without being trimmed.
GB23676/55A 1955-03-15 1955-08-17 Making and packaging flat or tubular film in reel form Expired GB818583A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US818583XA 1955-03-15 1955-03-15
US1132126XA 1955-03-15 1955-03-15

Publications (1)

Publication Number Publication Date
GB818583A true GB818583A (en) 1959-08-19

Family

ID=26766045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23676/55A Expired GB818583A (en) 1955-03-15 1955-08-17 Making and packaging flat or tubular film in reel form

Country Status (2)

Country Link
FR (1) FR1132126A (en)
GB (1) GB818583A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530602A1 (en) * 1982-07-26 1984-01-27 Reifenhaeuser Masch Method and device for winding onto a reel a flattened tubular strip of plastic.
CN107696467A (en) * 2016-08-09 2018-02-16 上海贝阳塑料机械科技有限公司 A kind of PVC thermal contractions inflation film manufacturing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH381418A (en) * 1960-02-15 1964-08-31 Oerlikon Buehrle Ag Device for the production of blown tubes or blown films

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530602A1 (en) * 1982-07-26 1984-01-27 Reifenhaeuser Masch Method and device for winding onto a reel a flattened tubular strip of plastic.
CN107696467A (en) * 2016-08-09 2018-02-16 上海贝阳塑料机械科技有限公司 A kind of PVC thermal contractions inflation film manufacturing machine

Also Published As

Publication number Publication date
FR1132126A (en) 1957-03-05

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