GB1331667A - Apparatus for manufacturing tubular film from thermoplastics material - Google Patents

Apparatus for manufacturing tubular film from thermoplastics material

Info

Publication number
GB1331667A
GB1331667A GB4695771A GB4695771A GB1331667A GB 1331667 A GB1331667 A GB 1331667A GB 4695771 A GB4695771 A GB 4695771A GB 4695771 A GB4695771 A GB 4695771A GB 1331667 A GB1331667 A GB 1331667A
Authority
GB
United Kingdom
Prior art keywords
lip
gas
trough
wall
liquid
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
GB4695771A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1331667A publication Critical patent/GB1331667A/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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/9125—Cooling of hollow articles of tubular films internally
    • 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
    • B29C48/88—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
    • B29C48/904—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 using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Centrifugal Separators (AREA)

Abstract

1331667 Making tubular films J THORDARSON 8 Oct 1971 [9 Oct 1970] 46957/71 Heading B5B In the extrusion of thermoplastic material as a tubular film by a process which involves expanding the film by a "bubble" of entrapped gas, the gas is cooled and circulated by apparatus inside the bubble. The apparatus additionally removes condensable impurities from the air. The apparatus consists of an elongated hollow housing 1 with a cooling element 2 past which the gas is blown by means such as a fan (not shown). The gas passes from the cooler down through baffle sets 7 and 8 into the space between walls 9 and 10 to the nozzle 10c. The armulus formed by walls 9, 10 rotate about mast 3, distributing the air evenly, the remainder of the apparatus is stationary, being connected by bearings 5, 6 to the rotating nozzle. Liquid condensing on wall 9 is collected in trough 14 by means of downward projecting lip 9a. Liquid condensing on wall 10 is conveyed up lip 10a into trough 11 by a combination of surface tension and centrifugal forces. Optionally, perforations 10b may be provided in lip 10a in order to facilitate transfer of liquid from the inside of wall 10 to lip 10a. Liquid condensing on cooler 2 collects in trough 15. Optionally pipes 12, 16, 17 may be provided by which condensate may be removed.
GB4695771A 1970-10-09 1971-10-08 Apparatus for manufacturing tubular film from thermoplastics material Expired GB1331667A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO3809/70A NO126423B (en) 1970-10-09 1970-10-09

Publications (1)

Publication Number Publication Date
GB1331667A true GB1331667A (en) 1973-09-26

Family

ID=19879862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4695771A Expired GB1331667A (en) 1970-10-09 1971-10-08 Apparatus for manufacturing tubular film from thermoplastics material

Country Status (2)

Country Link
GB (1) GB1331667A (en)
NO (1) NO126423B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015051774A1 (en) * 2013-10-13 2015-04-16 Reifenhäuser GmbH & Co. KG Maschinenfabrik Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder
DE102014017556A1 (en) * 2014-11-28 2016-06-02 Hosokawa Alpine Aktiengesellschaft Internal cooling tower for blown film systems
EP3025845A3 (en) * 2014-11-28 2016-06-15 HOSOKAWA ALPINE Aktiengesellschaft Internal cooling tower for a film blowing apparatus
US11339021B2 (en) 2018-12-11 2022-05-24 Hosokawa Alpine Aktiengesellschaft Device for winding and changing the reels of web material as well as a dedicated process
US11654605B2 (en) 2018-10-13 2023-05-23 Hosokawa Alpine Aktiengesellschaft Die head and process to manufacture multilayer tubular film

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12023838B2 (en) * 2016-05-09 2024-07-02 Windmöller & Hölscher Kg System for producing a blown film

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015051774A1 (en) * 2013-10-13 2015-04-16 Reifenhäuser GmbH & Co. KG Maschinenfabrik Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder
CN105636760A (en) * 2013-10-13 2016-06-01 莱芬豪舍机械制造两合公司 Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder
DE102014017556A1 (en) * 2014-11-28 2016-06-02 Hosokawa Alpine Aktiengesellschaft Internal cooling tower for blown film systems
EP3025845A3 (en) * 2014-11-28 2016-06-15 HOSOKAWA ALPINE Aktiengesellschaft Internal cooling tower for a film blowing apparatus
US10052799B2 (en) 2014-11-28 2018-08-21 Hosokawa Alpine Aktiengesellschaft Internal cooling tower for film blowing lines
DE102014017556B4 (en) * 2014-11-28 2019-05-16 Hosokawa Alpine Aktiengesellschaft Internal cooling tower for blown film systems
US11654605B2 (en) 2018-10-13 2023-05-23 Hosokawa Alpine Aktiengesellschaft Die head and process to manufacture multilayer tubular film
US11339021B2 (en) 2018-12-11 2022-05-24 Hosokawa Alpine Aktiengesellschaft Device for winding and changing the reels of web material as well as a dedicated process

Also Published As

Publication number Publication date
NO126423B (en) 1973-02-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees