DE1195475B - Method and device for stretching plastic films - Google Patents

Method and device for stretching plastic films

Info

Publication number
DE1195475B
DE1195475B DES62530A DES0062530A DE1195475B DE 1195475 B DE1195475 B DE 1195475B DE S62530 A DES62530 A DE S62530A DE S0062530 A DES0062530 A DE S0062530A DE 1195475 B DE1195475 B DE 1195475B
Authority
DE
Germany
Prior art keywords
stretching
guide rails
longitudinal
tensioning clips
plastic films
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.)
Pending
Application number
DES62530A
Other languages
German (de)
Inventor
Johannes Glossmann
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.)
Henschel Werke AG
Original Assignee
Henschel Werke AG
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
Priority to BE589584D priority Critical patent/BE589584A/xx
Application filed by Henschel Werke AG filed Critical Henschel Werke AG
Priority to DES62530A priority patent/DE1195475B/en
Priority to CH344860A priority patent/CH382431A/en
Priority to FR823278A priority patent/FR1252575A/en
Priority to GB1203460A priority patent/GB934048A/en
Publication of DE1195475B publication Critical patent/DE1195475B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/16Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
    • B29C55/165Apparatus therefor

Landscapes

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

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. α.:Int. α .:

B29dB29d

Deutsche Kl.: 39 a3-7/24 German class: 39 a3- 7/24

Nummer: 1195 475Number: 1195 475

Aktenzeichen: S 62530 X/39 a3File number: S 62530 X / 39 a3

Anmeldetag: 10. April 1959 Filing date: April 10, 1959

Auslegetag: 24. Juni 1965Opening day: June 24, 1965

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Recken von beheizten, einem Längszug unterworfenen Kunststoffolien gleichzeitig in Längsund Querrichtung mittels die Längsreckung bewirkender Walzen und in ihrem Abstand veränderlicher, die Querreckung bewirkender, an den Folienbahnrändern angreifender und auf Schienen geführter Spannkluppen.The invention relates to a method and a device for stretching heated, one longitudinal draw subjected plastic films simultaneously in the longitudinal and transverse directions by means of the longitudinal stretching Rollers and their spacing, which is variable and causes the transverse stretching, at the edges of the film web attacking tension clamps guided on rails.

Es ist bekannt, Kunststoffolien insbesondere zu dem Zwecke längs und quer zu recken, um eine gleichmäßig starke und klar durchsichtige Folienbahn mit verbesserten physikalischen Eigenschaften gleichmäßig in Längs- und Querrichtung zu erhalten. Durch Verfahren, bei welchen zunächst mittels Walzenpaaren ein Längsrecken durchgeführt wurde, worauf in einem weiteren Arbeitsgang dann die Folie in die Breite gezogen wurde, ergaben sich ungleiche Materialstärken, womit das Erreichen einer für die Transparenz erforderlichen und gleichmäßigen Struktur in Frage gestellt wurde. aoIt is known to stretch plastic films lengthways and transversely in particular for the purpose of a evenly strong and clear transparent film web with improved physical properties to be obtained evenly in the longitudinal and transverse direction. Through procedures in which initially by means of Roll pairs a longitudinal stretching was carried out, whereupon the film in a further operation was stretched in width, resulted in unequal material thicknesses, thus achieving one for the Transparency required and uniform structure was called into question. ao

Die gleichzeitige Längs- und Querreckung von Folien, wie sie oben geschildert ist, ist geeignet, die beschriebenen Nachteile zu vermeiden. Hier jedoch trat die Schwierigkeit ein, daß der Verlauf des Reckvorganges in Längs- und Querrichtung, d. h. der Grad des Reckens sowohl in der Längs- als auch in der Querrichtung zu jedem Zeitpunkt während des Reckvorganges sich nicht sicher, vor allem aber auch nur unter Anwendung komplizierter Mittel einstellen ließ. Der gesamte Reckvorgang wurde dadurch — abgesehen von den höheren Kosten für Einrichtung und Bedienung der entsprechenden Vorrichtungen— unsicher gestaltet, so daß nicht selten die gleichen Nachteile eintraten, wie sie vorher bei einer getrennten Durchführung von Längs- und Querreckung bereits zu beobachten gewesen sind.The simultaneous longitudinal and transverse stretching of films, as described above, is suitable for the to avoid the disadvantages described. Here, however, the problem arose that the course of the stretching process in the longitudinal and transverse direction, d. H. the degree of stretching both longitudinally and longitudinally not sure of the transverse direction at any point in time during the stretching process, but above all could only be set using complicated means. The entire stretching process was thereby - apart from the higher costs of setting up and operating the corresponding devices— designed insecure, so that the same disadvantages occurred not infrequently as they were previously with a separate Implementation of longitudinal and transverse stretching have already been observed.

Demgegenüber wird durch die Erfindung ein Verfahren nebst entsprechender Vorrichtung geschaffen, welche es ermöglicht, mit besonders einfachen Mitteln den Verlauf eines Reckvorganges in Längs- und Querrichtung sicher einstellbar zu machen.In contrast, the invention creates a method and a corresponding device, which enables the course of a stretching process in longitudinal direction with particularly simple means and cross direction can be safely adjusted.

Dies wird bei einem Verfahren der eingangs geschilderten Art erfindungsgemäß dadurch erreicht, daß die Spannkluppen durch die Folien selbst über die in ihrem Verlauf dem Materialverhalten beim Reckvorgang angepaßten Führungsschienen gezogen werden.In the case of a method, this is described at the outset Type achieved according to the invention in that the clamping clips through the films themselves pulled the guide rails adapted in their course to the material behavior during the stretching process will.

Die Vorrichtung zur Durchführung dieses Verfahrens besitzt Führungsschienen für die rollbar ausgebildeten Spannkluppen und zeichnet sich erfin- so dungsgemäß dadurch aus, daß die Spannkluppen unabhängig voneinander auf den Führungsschienen Verfahren und Vorrichtung zum Recken von
Kunststoffolien
The device for carrying out this method has guide rails for the rollable tensioning clips and is characterized according to the invention in that the tensioning clips are independently of one another on the guide rails
Plastic films

Anmelder:Applicant:

Henschel-Werke Aktiengesellschaft, KasselHenschel-Werke Aktiengesellschaft, Kassel

Als Erfinder benannt:Named as inventor:

Johannes Glossmann, Zell-WeierbachJohannes Glossmann, Zell-Weierbach

frei verschiebbar sind und die Führungsschienen aus gelenkig miteinander verbundenen Abschnitten bestehen, die mit querbeweglichen und mittels einer Spindel od. dgl. einstellbaren Schlitten verbunden sind, deren Führungsstücke auf Trägern ruhen, deren seitlicher Abstand sich in Durchlaufrichtung der Folienbahn ändert. Damit ist der Linienzug der Führungsschienen und somit der Verlauf des Reckvorganges einstellbar.are freely movable and the guide rails consist of articulated sections, which are connected to the transversely movable and adjustable carriage by means of a spindle or the like are whose guide pieces rest on carriers whose lateral distance is in the direction of passage of the Foil web changes. This is the line of the guide rails and thus the course of the stretching process adjustable.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung schaubildlich und vereinfacht dargestellt.An exemplary embodiment of the invention is shown diagrammatically and in a simplified manner in the drawing.

Auf einem Träger 1 sind Führungsstücke 2 befestigt, auf welchen Schlitten 3 mittels einer Spindel 4 durch Handräder 5 oder aber durch von einem Kommandogerät aus steuerbare, nicht dargestellte Antriebselemente bewegbar sind. Die Schlitten 3 tragen Gelenkverbindungen 6 von Führungsschienenabschnitten 7, die in ihrer Linienführung durch die Schlittenbewegung einstellbar sind. An Stelle von Spindeln 4 können auch Druckzylinder für die Bewegung der Schlitten 3 Verwendung finden.Guide pieces 2 are attached to a carrier 1, on which carriage 3 by means of a spindle 4 by handwheels 5 or by a command device from controllable, not shown drive elements are movable. The slide 3 carry articulated connections 6 of guide rail sections 7, which in their lines through the Slide movement are adjustable. Instead of spindles 4, pressure cylinders can also be used for the movement the slide 3 is used.

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zum Recken von beheizten, einem Längszug unterworfenen Kunststoffolien gleichzeitig in Längs- und Querrichtung mittels die Längsreckung bewirkender Walzen und in ihrem Abstand veränderlicher, die Querreckung bewirkender, an den Folienbahnrändern angreifender und auf Schienen geführter Spannkluppen, dadurch gekennzeichnet, daß die Spannkluppen durch die Folie selbst über die in ihrem Verlauf dem Materialverhalten beim Reckvorgang angepaßten Führungsschienen gezogen werden.1. Process for stretching heated plastic films subjected to longitudinal tension at the same time in the longitudinal and transverse directions by means of the longitudinal stretching rollers and in their Distance more variable, causing the transverse stretching, more attacking the edges of the film web and tensioning clips guided on rails, characterized in that the tensioning clips through the film itself over the course of the material behavior during the stretching process adapted guide rails are pulled. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 mit Führungsschienen für die rollbar ausgebildeten Spannkluppen, dadurch gekennzeichnet, daß die Spannkluppen un-2. Device for performing the method according to claim 1 with guide rails for the rollable tensioning clips, characterized in that the tensioning clips 509 597/382509 597/382 abhängig voneinander auf den Führungsschienen frei verschiebbar sind und die Führungsschienen aus gelenkig miteinander verbundenen Abschnitten (7) bestehen, die mit querbeweglichen und mittels einer Spindel od. dgl. einstellbaren Schlitten (3) verbunden sind, deren Führungsstücke (2) auf Trägern (1) ruhen, deren seitlicher Abstand sich in Durchlaufrichtung der Folienbahn ändert.are freely displaceable on the guide rails depending on one another and the guide rails consist of articulated interconnected sections (7), which can be moved transversely and by means of a spindle or the like. Adjustable slide (3) are connected, the guide pieces (2) of which rest on supports (1), the lateral Distance changes in the direction of travel of the film web. In Betracht gezogene Druckschriften: Schweizerische Patentschriften Nr. 268 008, 384;
USA.-Patentschrift Nr. 2 728 941.
Considered publications: Swiss Patent Specifications No. 268 008, 384;
U.S. Patent No. 2,728,941.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings 509 597/382 6.65 © Bundesdruckerei Berlin509 597/382 6.65 © Bundesdruckerei Berlin
DES62530A 1959-04-10 1959-04-10 Method and device for stretching plastic films Pending DE1195475B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE589584D BE589584A (en) 1959-04-10
DES62530A DE1195475B (en) 1959-04-10 1959-04-10 Method and device for stretching plastic films
CH344860A CH382431A (en) 1959-04-10 1960-03-28 Method and device for stretching plastic films
FR823278A FR1252575A (en) 1959-04-10 1960-04-04 Method and device for stretching or stretching plastics in strips or sheets
GB1203460A GB934048A (en) 1959-04-10 1960-04-05 Improvements in or relating to the stretching of plastic foils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES62530A DE1195475B (en) 1959-04-10 1959-04-10 Method and device for stretching plastic films

Publications (1)

Publication Number Publication Date
DE1195475B true DE1195475B (en) 1965-06-24

Family

ID=7495680

Family Applications (1)

Application Number Title Priority Date Filing Date
DES62530A Pending DE1195475B (en) 1959-04-10 1959-04-10 Method and device for stretching plastic films

Country Status (4)

Country Link
BE (1) BE589584A (en)
CH (1) CH382431A (en)
DE (1) DE1195475B (en)
GB (1) GB934048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1629384B1 (en) * 1966-11-11 1971-07-15 Detag Device for tensioning moving webs, in particular plastic film webs
DE2238357A1 (en) * 1971-08-05 1973-02-22 Cellophane Sa METHOD AND DEVICE FOR STRETCHING PLASTIC FILMS

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1258591B (en) * 1961-09-16 1968-01-11 Kalle Ag Method and device for simultaneous longitudinal and transverse stretching of thermoplastic plastic film webs
IT1317223B1 (en) * 2000-04-12 2003-05-27 Flexafilms S P A APPARATUS AND METHOD FOR TRANSVERSALLY IRONING A PLASTIC FILM TAPE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH268008A (en) * 1941-12-22 1950-04-30 Cellulose Sidac Societe Anonym Process for forming a sheet from organic plastic and apparatus for carrying out this process.
CH290384A (en) * 1950-06-03 1953-04-30 Cellulose Sidac Societe Anonym Process for the production of a continuous film of organic plastic material by extrusion and apparatus for carrying out the process.
US2728941A (en) * 1952-08-12 1956-01-03 Du Pont Apparatus for stretching webs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH268008A (en) * 1941-12-22 1950-04-30 Cellulose Sidac Societe Anonym Process for forming a sheet from organic plastic and apparatus for carrying out this process.
CH290384A (en) * 1950-06-03 1953-04-30 Cellulose Sidac Societe Anonym Process for the production of a continuous film of organic plastic material by extrusion and apparatus for carrying out the process.
US2728941A (en) * 1952-08-12 1956-01-03 Du Pont Apparatus for stretching webs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1629384B1 (en) * 1966-11-11 1971-07-15 Detag Device for tensioning moving webs, in particular plastic film webs
DE1629384C2 (en) * 1966-11-11 1972-03-09 Detag Device for tensioning moving webs, in particular plastic film webs
DE2238357A1 (en) * 1971-08-05 1973-02-22 Cellophane Sa METHOD AND DEVICE FOR STRETCHING PLASTIC FILMS

Also Published As

Publication number Publication date
BE589584A (en)
CH382431A (en) 1964-09-30
GB934048A (en) 1963-08-14

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