DE1195475B - Method and device for stretching plastic films - Google Patents
Method and device for stretching plastic filmsInfo
- 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
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
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
- B29C55/165—Apparatus therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
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
KunststoffolienThe 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)
USA.-Patentschrift Nr. 2 728 941.Considered publications: Swiss Patent Specifications No. 268 008, 384;
U.S. Patent No. 2,728,941.
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)
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)
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)
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 |
-
0
- BE BE589584D patent/BE589584A/xx unknown
-
1959
- 1959-04-10 DE DES62530A patent/DE1195475B/en active Pending
-
1960
- 1960-03-28 CH CH344860A patent/CH382431A/en unknown
- 1960-04-05 GB GB1203460A patent/GB934048A/en not_active Expired
Patent Citations (3)
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)
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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