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WO2011057929A1 - Procédé et ensemble d'étirage d'une bande de feuille - Google Patents

Procédé et ensemble d'étirage d'une bande de feuille Download PDF

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Publication number
WO2011057929A1
WO2011057929A1 PCT/EP2010/066716 EP2010066716W WO2011057929A1 WO 2011057929 A1 WO2011057929 A1 WO 2011057929A1 EP 2010066716 W EP2010066716 W EP 2010066716W WO 2011057929 A1 WO2011057929 A1 WO 2011057929A1
Authority
WO
WIPO (PCT)
Prior art keywords
film web
roller
transport
stretching
transport roller
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.)
Ceased
Application number
PCT/EP2010/066716
Other languages
German (de)
English (en)
Inventor
Jürgen Linkies
Bartholomeus Trommelen
Thomas Niebrügge
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of WO2011057929A1 publication Critical patent/WO2011057929A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • 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
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums

Definitions

  • the invention relates to a device for longitudinal stretching of a film web according to the preamble of claim 1 and to a corresponding method according to the preamble of claim 6.
  • thermoplastic films With the stretching of thermoplastic films, their properties can be specifically changed. Such properties are, for example, transparency or strength. Such stretching, which can take place in the transverse and / or longitudinal direction of the film web, can take place inline directly after the extrusion process. However, the extruded film may also initially be wound up and fed to the apparatus for longitudinal stretching after a new development ("offline processing").
  • WO 2006/063641 A1 shows in its FIGURE 1 such a device, in this case multi-stage, apparatus for longitudinal stretching Characteristic of such a device are:
  • At least one heating device in which the film web is heatable in which the film web is heatable
  • At least one stretching unit in which the film web is stretchable in its longitudinal direction wherein the stretching unit comprises a first transport roller which has a first peripheral speed in the stretching operation and a, seen along the transport path of the film web, the first transport roller following second transport roller with a second peripheral speed wherein the second peripheral speed is greater than the first transport speed.
  • such devices also include annealing or annealing rolls, which are positioned between the stretching unit and the cooling rollers. These rollers often already have a lower temperature than the heating rollers, but are tempered so that they avoid too rapid cooling of the film. The difference between chill rolls and annealing rolls is often made because of the hot oil annealing rolls and the water chill rolls.
  • film webs are preferably processable from thermoplastic materials such as polystyrene, polypropylene or polyethylene.
  • the object of the present invention is therefore to propose an apparatus and a method with which film webs can be produced with a lower thickness variance.
  • a further deflection roller in the transport path of the film web between the first and the second transport roller can be introduced.
  • this guide roller runs the film web with a certain angle of wrap, which is less than 90 degrees, preferably less than 45 degrees and in particular less than 30 degrees.
  • the invention is based on the observation that in devices of the prior art in the region between the first and the second transport roller, which is also referred to as a stretching gap, the film web becomes narrower (so-called neck-in). In conjunction with this, the thickness of the film web, in particular at its edges, increases. However, if the film web now runs over another deflection roller, then the film is fixed on this roller and can not become narrower. The introduction of a further deflection roller has shown that the variance in the film thickness can be limited.
  • the further deflection roller may be at least partially coated with an elastomeric material such as rubber or silicone rubber. This improves the fixation of the film web.
  • a drive is provided, with which the further deflection roller can be driven.
  • the rotational speed of the guide roller can be controlled or regulated.
  • the further deflection roller is displaceable relative to the first and / or to the second transport roller.
  • the guide roller can be arranged linearly displaceable in the machine frame.
  • the deflection roller is rotatably mounted in a lever arm, wherein the lever arm can be mounted in the machine frame and can be pivoted relative thereto.
  • the direction of rotation of the second transport roller is reversible.
  • another transport path of the film web with respect to the transport path, in which no deflection roller is introduced into this be provided. This avoids too long, free transport of the film web, in which the neck-in effect could be enhanced. Further embodiments of the invention will become apparent from the description and the claims.
  • Fig. 1 is a device for longitudinal stretching of a film web after the
  • FIG. 2 Enlarged view of a part of FIG. 1
  • FIG. 3 view according to Figure 2, after the guide roller in the
  • Transport path of the film web was introduced.
  • FIG. 4 view according to Figure 3, but with representation of a
  • Displacement mechanism Fig. 1 shows a device 1 for longitudinal stretching of a film web 2, which is guided along a transport path in the transport direction 3.
  • the film web 2 is fed by an extrusion device or an unwinding device.
  • the film web passes a guide roller 5, before they in the heater 4 successively four heating rollers 6, which are temperature-controlled, running.
  • the stretching unit 8 comprises transport rollers 9, 10, 11, 12, wherein the roller pairs 9 and 10 and the pairs of rollers 11 and 12 each form a so-called stretching gap.
  • the rollers 10 and 12 each have a greater circumferential speed than their associated rollers 9 and 1 first However, the rollers 10 and 11 may have the same peripheral speed.
  • Each of the four transport rollers mentioned may be assigned a pressure roller 13, which in each case ensures that the film web 2 rests firmly on the transport rollers and does not slip.
  • the film web 2 is guided over the cooling rollers 16.
  • the so-called annealing rollers may be provided, which have already been described above, but are not shown here.
  • the film web 2 After the film web 2 has passed two further guide rollers 18 and 19, it can be fed to a winding device or any further processing device.
  • a guide roller 14 is additionally shown, which in the web path between the transport rollers 1 1 and 12 can be introduced.
  • the transport rollers 1 1 and / or 12 may be slidably mounted to make room for the guide roller 14.
  • the guide roller 14 may for this purpose comprise a sufficiently small diameter.
  • FIG. 2 shows an enlarged detail from FIG. 1. It can be seen that the deflection roller 14 is not active. The directions of rotation of the rollers 1 1 and 12 are indicated by the arrows 21 and 22.
  • FIG. 3 now shows the deflection roller 14 after it has been introduced into the transport path of the film web 2.
  • the direction of rotation of the transport roller was reversed and is indicated by the arrow 22 '.
  • the Wrap angle ⁇ with which the film web 2 wraps around the deflection roller 14, has a size of, for example, 40 degrees.
  • the roller 13 can be used in this case as a deflection roller.
  • FIG. 4 shows the same situation as FIG. 3.
  • an embodiment of a displacement mechanism with which the roller 14 is displaceable, in the present case, displaceable relative to the transport roller 11 and / or the transport roller 12, is now shown.
  • the guide roller 14 is rotatably mounted via a rotary joint in a pivot arm 23.
  • the pivot arm 23 is rotatably mounted in a frame-fixed support 24.
  • the piston rod 25 of a piston-cylinder unit 26 is rotatably mounted.
  • the piston 27 of the piston-cylinder unit is rotatably supported on a further frame-fixed support 28.
  • the film web 2 can be guided over desired transport paths through the stretching gap formed by the rollers 11 and 12.
  • the transport path depending on the materials of which the film is made.
  • high-quality films can be produced for many material combinations.

Landscapes

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

Abstract

L'invention concerne un ensemble (1) d'étirage d'une bande de feuille (2), comportant au moins un dispositif chauffant (4), dans lequel la bande de feuille (2) peut être chauffée, au moins un dispositif réfrigérant (15), dans lequel la bande de feuille (2) peut être refroidie, et au moins un mécanisme d'étirage (8), dans lequel la bande de feuille (2) peut être étirée dans son sens longitudinal. Le mécanisme d'étirage (8) comprend un premier rouleau transporteur (11) qui, en mode d'étirage, présente une première vitesse circonférentielle, et un deuxième rouleau transporteur (12) qui suit le premier rouleau transporteur, vu le long de la voie de transport de la bande de feuille (2), et qui présente une deuxième vitesse circonférentielle, supérieure à la première. Selon l'invention, un autre rouleau de renvoi (14) peut être monté dans la voie de transport de la bande de feuille (2), entre le premier (11) et le deuxième rouleau transporteur (12).
PCT/EP2010/066716 2009-11-10 2010-11-03 Procédé et ensemble d'étirage d'une bande de feuille Ceased WO2011057929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009046593.6 2009-11-10
DE102009046593A DE102009046593A1 (de) 2009-11-10 2009-11-10 Vorrichtung und Verfahren zum Längsrecken einer Folienbahn

Publications (1)

Publication Number Publication Date
WO2011057929A1 true WO2011057929A1 (fr) 2011-05-19

Family

ID=43502516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/066716 Ceased WO2011057929A1 (fr) 2009-11-10 2010-11-03 Procédé et ensemble d'étirage d'une bande de feuille

Country Status (2)

Country Link
DE (1) DE102009046593A1 (fr)
WO (1) WO2011057929A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085735A1 (de) 2011-11-03 2013-05-08 Windmöller & Hölscher Kg Reckwerk und Verfahren zum Längen von Folienbahnen
WO2013101877A2 (fr) 2011-12-29 2013-07-04 Iowa State University Research Foundation, Inc. Plantes génétiquement modifiées résistantes à xanthomonas et à d'autres agents pathogènes bactériens des plantes
DE102012015462A1 (de) 2012-08-07 2014-02-13 Reifenhäuser GmbH & Co. KG Maschinenfabrik Blasfolienanlage, Verfahren zum Herstellen einer Blasfolienbahn und damit hergestellte Folie
DE102018008127B4 (de) 2018-10-13 2022-06-09 Hosokawa Alpine Aktiengesellschaft Blaskopf und Verfahren zur Herstellung einer Mehrschichtschlauchfolie
DE102018009632B4 (de) 2018-12-11 2021-12-09 Hosokawa Alpine Aktiengesellschaft Vorrichtung zum Aufwickeln und Wickelwechsel von bahnförmigem Material und ein Verfahren dafür
DE102020000334A1 (de) 2020-01-21 2021-07-22 Hosokawa Alpine Aktiengesellschaft Vorrichtung und Verfahren zur monaxialen Längenänderung von Folienbahnen
DE102022000351A1 (de) 2022-01-29 2023-08-03 Hosokawa Alpine Aktiengesellschaft Verfahren und Vorrichtung zur Foliendickenregelung von gereckter im Folienblasverfahren hergestellter Schlauchfolie

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61160222A (ja) * 1985-01-07 1986-07-19 Mitsubishi Petrochem Co Ltd 熱可塑性樹脂フイルムの縦延伸方法
WO1999067080A1 (fr) * 1998-06-23 1999-12-29 First Green Park Pty Ltd. Orientation de film visant a ameliorer ses proprietes barriere et sa stabilite aux rayons u.v.
WO2006063641A1 (fr) 2004-12-16 2006-06-22 Brückner Maschinenbau GmbH Dispositif et procede pour entrainer un ensemble cylindre de prechauffage dans un dispositif de calandrage
WO2009082105A2 (fr) * 2007-12-20 2009-07-02 Bae, Hee Jung Appareil pour rallonger la longueur de panneaux de résine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1212290B (de) * 1963-10-15 1966-03-10 Brueckner Trocknerbau Vorrichtung zum Strecken einer dehnbaren Materialbahn
DE1901059B2 (de) * 1969-01-10 1975-03-27 Basf Ag, 6700 Ludwigshafen Verfahren und Vorrichtung zur Herstellung biaxial orientierter Polyamidfolien

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61160222A (ja) * 1985-01-07 1986-07-19 Mitsubishi Petrochem Co Ltd 熱可塑性樹脂フイルムの縦延伸方法
WO1999067080A1 (fr) * 1998-06-23 1999-12-29 First Green Park Pty Ltd. Orientation de film visant a ameliorer ses proprietes barriere et sa stabilite aux rayons u.v.
WO2006063641A1 (fr) 2004-12-16 2006-06-22 Brückner Maschinenbau GmbH Dispositif et procede pour entrainer un ensemble cylindre de prechauffage dans un dispositif de calandrage
WO2009082105A2 (fr) * 2007-12-20 2009-07-02 Bae, Hee Jung Appareil pour rallonger la longueur de panneaux de résine

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