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DE1504915A1 - Process and device for the production of non-slip blown films - Google Patents

Process and device for the production of non-slip blown films

Info

Publication number
DE1504915A1
DE1504915A1 DE19621504915 DE1504915A DE1504915A1 DE 1504915 A1 DE1504915 A1 DE 1504915A1 DE 19621504915 DE19621504915 DE 19621504915 DE 1504915 A DE1504915 A DE 1504915A DE 1504915 A1 DE1504915 A1 DE 1504915A1
Authority
DE
Germany
Prior art keywords
rollers
tubular film
take
film
necessary
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
DE19621504915
Other languages
German (de)
Inventor
Meyer Dipl-Chem Dr Fr-J
Doerk Dipl-Chem Dr Kl
Wilhelm Steinlein
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.)
Scholven Chemie AG
Original Assignee
Scholven Chemie 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
Application filed by Scholven Chemie AG filed Critical Scholven Chemie AG
Publication of DE1504915A1 publication Critical patent/DE1504915A1/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
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0018Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0019Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/001Tubular films, sleeves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/003Tubular articles having irregular or rough surfaces

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)
  • Making Paper Articles (AREA)

Description

Verfahren und Vorrichtung zur Herstellung rutscht'ester Blasfolien Die Erfindung bezieht sich auf ein Verrahren und eine Vorrichtung zu@ lrofilieren einer aus Thermoplasten gefertigten Schiauchfolie ur Herstellung rutschfester Verpackungsemballagen. üie Herstellung der ochlauchfolien und der Verpackungskörper erfolgt in bekannter Weise in einer Arbeitsgang. Der thermoplastisehe Kunststoff wird durch eine telilperaturge-regelte Ringspaltdüse gepreßt und dadurch zu einem schlauch geformt. Der Schlauch wird in einem bestimmten Abstand von der Ddse in ein gummibelegtes Aodicht- und Abzugswalzenpaar eingefahren und unmittelkbar hinter der Düse im thermoplastischen Bereich durch aufblasen mit Luft oder Inertgas auf die notwendige Nennweise gebracht. Method and device for the production of blown films with slippage The invention relates to a locking device and a device for profiling a thermoplastic film for the production of non-slip packaging. The production of the tubular films and the packaging body takes place in a known manner Way in one operation. The thermoplastic plastic is controlled by a temperature control Pressed annular gap nozzle and thereby formed into a hose. The hose goes in a certain distance from the nozzle into a rubber-coated seal and take-off roller pair retracted and immediately behind the nozzle in the thermoplastic area inflate with air or inert gas in the required nominal manner.

Die aus der wie oben beschrieben gefertigten ochlauchrolie hergestellten Säcke oder Beutel haben den Nachteil, dad sie, bedingt durch ihre glatte Oberfläche, nicht rutschfest sind und sich daher nicht zur Stapelung eignen. Die aufgestapelten Säcke oder Beutel verändern ihre Lage in Abhängigkeit von der Lagerzeit bereits schon bei ruhender Belastung und sind meist nach einem Transport vollkommen durcheinander gerutscht.Those made from the ochlauchrolie manufactured as described above Sacks or bags have the disadvantage that, due to their smooth surface, they are not non-slip and are therefore not suitable for stacking. The piled up Sacks or bags change their position depending on the storage time even when the load is at rest and are usually completely confused after a transport slipped.

Es wurde nun gefunden, daß bei einem Sack oder Beutel, hergestellt aus einer profilierten Schlauchfolie, die oben genannten Schwierig zeiten nicht auftreten. Der profilierte Schlauchfoliensak oder Beutel erreicht unabhängig von dem Füllgut eine ausgezeiehnete Rutschfestigkeit. Die Herstellung einer profilierten Flachfolie durch Prägung, vorzugsweise zur Einprägung von Ornamenten für dekorative Zwecke ist bereits bekannt. Es war jedoch nicht vorauszusehen, dal sich auch ein gefalteter Schlauch direkt im Schlauchfolienherstellungsprozess profilieren läßt, da die von der Fla-chfolienprägung bekannten Temperaturen bei Schlauchfolien ungeeignet sind und die hohen Prpgetemperaturen auch zum Verschweißen der beiden Folienlagen führen.It has now been found that a sack or pouch is made made of a profiled tubular film, the difficulties mentioned above do not occur appear. The profiled tubular film bag or bag achieves independently of the product has an excellent slip resistance. The manufacture of a profiled Flat film by embossing, preferably for embossing ornaments for decorative Purposes is already known. It was not foreseeable, however, that it would come folded tube directly in the tubular film manufacturing process profile leaves, as the temperatures known from flat foil stamping for tubular foils are unsuitable and the high test temperatures are also suitable for welding the two Lead film layers.

Nach dem erfindungsgemäßen Verfahren ist es nunmehr möglich, die Schlauchfolie im nicht mehr plastischen Bereich durch Prägung zu profilieren.According to the method according to the invention, it is now possible to use the tubular film to be profiled in the no longer plastic area by embossing.

Der Vorteil des Verfahrens besteht darin, daß die Profilgebung unmittelbar und ohne besondere Verfahrensstufe in eine. 1 Arbeitsgang mit dem zur Herstellung der Blasfolien üblichen Verfahren erfolgt.The advantage of the method is that the profiling is immediate and without a special procedural stage in one. 1 operation with the one for production the conventional blown film method takes place.

Von besonderer Wichtigkeit ist die vorliegende Erfindung rür Niederdruckpolyolefine, und hier insbesondere für Niederdruckpolyäthylen und -propylen, ferner auch für Iolyvinylchlorid. Bisher war eine Anwendung dieserKunsttoffe für die Herstellung von säcken oder Beuteln infolge der glatten Oberflache des materials sehr erschwert.The present invention is of particular importance for low-pressure polyolefins, and here in particular for low-pressure polyethylene and propylene, and also for Polyvinyl chloride. Heretofore, one application of these plastics was for manufacturing sacks or bags are very difficult due to the smooth surface of the material.

Durch die sehr einfachen Naßnahmen der vorliegenden Erfindung ist es möglich gemacht, das ifiaterial numehr auch bei den genannten Verpackungen einzusetzen, und zwar auch dann, wenn eine stapelung der so verpackten Güter erfolgt.By the very simple measures of the present invention is made it possible to use the ifimaterial also for the named packaging, even if the goods packed in this way are stacked.

Es empfiehlt sich, beim Präge-vorgang selbst Temperaturen anzuwenden, die unterhalb des Erweichungspunktes des Thermoplasten liegen, u zu vermeiden, daß die Folien verkleben. Die Profilgebung selbst erfolgt dabei in profilierten, beispielsweise mit Profilgummi belegten Abdicht- und Abzugswalzen, Es kann dabei eine oder auch beide Walzen mit Profil versehen sein. Die tialzen sind zweckmäßig heiz- oder kühlbar ausgebildet. Es ist nicht erforderlich, daß der Folienschlauch, wenn er an die walzen gelangt, bereits die zur Prägung erforderliche Temperatur unterhalb des Erweichungapunkts erreicht hat. Durch die Berührung rit der Walze wird der Schlauch auf diese Temperatur herabgekühlt, ehe er in die eigentliche Prägezone gelangt, in der er der gegenläufigen Druckwirkung der beiden Walzen ausgesetzt ist. Die in der Prägezone anzuwendenden Te@peraturen liegen bei Niederdruckpolyäthylen beispielsweise in Bereich zwischen 50 und 125°C. Bei dieser Behandlung erhffiit man eine rutschfeste Schlauchfolie. Zusätzlich erhält man den Effekt, das bei der Folie je nach Verformungsgrad und Verformungstemperatur eine wesentliche Verfestigung eintritt. Das beruht darauf, daß durch die profilgebung unterschiedlichc Verstreckungsgrade erreicht werden. Die Steifigkeit der Folie kann ebenfalls in Abhängigkeit von der @rofilgestaltung verbessert werden. Eine besonders günstige Ausführungsforrn des Verfahrens besteht darin, daß die Schlauchfolie durch allseitig in den Folieneinzugsführungen angeordnete temperaturgeregelte Wärmequellen, beispielsweise Infrarotstrahler, kurz vor den Einzug in das AbdicIit- und Abzugswalzenpaar erwärmt wird, so daß die materialbedingte günstigste Verstreckungstemperatur eingehalten werden kann.It is advisable to use temperatures yourself during the embossing process, which are below the softening point of the thermoplastic, u to avoid that glue the foils together. The profiling itself takes place in profiled, for example Sealing and take-off rollers covered with profile rubber, it can be one or also both rollers should be provided with a profile. The tialzen can be conveniently heated or cooled educated. It is not necessary that the film tube when it is on the rollers reaches, the temperature required for embossing is below the softening point has reached. By touching the roller, the hose is raised to this temperature cooled down before it reaches the actual embossing zone, in which it is the opposite Pressure effect exposed to the two rollers. The one in the embossing zone Applicable Te @ temperatures are for example in the area of low-pressure polyethylene between 50 and 125 ° C. This treatment results in a non-slip tubular film. In addition, you get the effect that the film has depending on the degree of deformation and Deformation temperature a substantial solidification occurs. This is based on that different degrees of stretching can be achieved through the profiling. The rigidity of the film can also depend on the profile design be improved. There is a particularly favorable embodiment of the method in that the tubular film is arranged on all sides in the film feed guides temperature-controlled heat sources, for example infrared radiators, just before the Feed into the cover and take-off roller pair is heated, so that the material-related the most favorable stretching temperature can be maintained.

Es wurde gefunden, daß Niederdruckpolyäthylenfolien bei einer Profilierungstemperatur zwischen 60 und 800C das Maximum an Festigkeit erreichen und daß die bekannten Orientierungserscheinungen in Niederdruckpolyäthylenfolien durch diese Verstreckung in den Profilen aufgehoben werden. Für tiefgezogene Profile liegt die bevorzugte Verarbeitungstemperatur zwischen 110 und 11500.It has been found that low density polyethylene films at a profiling temperature between 60 and 800C reach the maximum in strength and that the known orientation phenomena lifted in low-pressure polyethylene films by this stretching in the profiles will. The preferred processing temperature for deep-drawn profiles is between 110 and 11500.

Zur Vermeidung von Kerbwirkungen in den Faltkanten sind zweckmäßig die Profile in den Randzonen der Walzen nicht eingearbeitet, so daß die Schlauchfaltstellen unprofiliert bleiben. Die Profile können je nach Anforderung verschieden gestaltet werden, z.B. Waben-, Riffel-oder Narbenmuster. Die Kanten der Profilwalzen sind zur Vermeidung einer Kerbwirkung zweckmäßig abgerundet.To avoid notch effects in the folded edges are useful the profiles in the edge zones of the rollers are not incorporated, so that the tube folds remain unprofiled. The profiles can be designed differently depending on the requirements e.g. honeycomb, corrugated or grain patterns. The edges of the profile rollers are rounded off to avoid a notch effect.

Nachstehend soll das Verrahren anhand einer Zeichnung erläutert werden.The Verrahren will be explained below with reference to a drawing.

Der aus der Düse 1 ausgexDreßte Folienschlauch wird durch Aufblasen auf die notwendige Nennweite gebracht und durch die Einlaufführungen 2 flachgelegt. Der flachgelegte Schlauch kann, je nach den besonderen Verhältnissen beim Blasen, Icurz vor den Einlauf in die Profilgebung erwärmt (beispielsweise durch Infrarotstrohler 3) oder gekühlt werden (beispielsweise dadurch, daß das mit Profil versehene Abdicht- und Abzugswalzenpaar 4 kühlbar ausgerüstet ist). Die Folie wird dann durch das Abdicht- und Abzugswalzenpaar eingezogen und profiliert.The film tube pulled out of the nozzle 1 is inflated brought to the required nominal width and laid flat by the inlet guides 2. The flattened tube can, depending on the particular blowing conditions, Shortly before entering the profile, it is heated (for example by an infrared heater 3) or cooled (for example by the fact that the profiled sealing and take-off roller pair 4 is equipped to be coolable). The film is then passed through the sealing and pair of take-off rollers drawn in and profiled.

Claims (1)

@ a t e h t a n s p r ü c h e 1. Verfahren zur Herstellung rutschfester Blasfolien aus thermoolastischen Kunststoffen, insbesondere Polyolefinen, durch Stroangpressen des thermoplastischen Eaterials aus einer te@peraturgeregelten Ringspaltdüse und Aufblasen desselben zu einer Schlauchfolie bestimmter Weite, die anschließend Lot Hilfe einer Führung flachgelegt und durch ein gegebenenfalls heiz- oder kühlbare Abdicht- bezw. Abzugswalzenpaar abgezogen wird, dadurch gekennzeichnet, da. 3 die Folie bei erhöhter Temperatur, Jedoch unterhalb ihres Erweichungspunktes, gegepehenfalls nach Durchlaufen einer @eizvorrichtung, durch die @it einer @rofilierung ver-@ehenen Abzug@walzen geführt wird. @ a t e h t a n s p r ü c h e 1. Process for making non-slip Blown films made of thermo-elastic plastics, in particular polyolefins, through The thermoplastic material is pressed into straw from a temperature-controlled annular gap nozzle and inflating the same to a tubular film of a certain width, which is then Lot with the help of a guide laid flat and, if necessary, heated or cooled Sealing respectively Pull-off roller pair is withdrawn, characterized in that. 3 the Film at elevated temperature, but below its softening point, if necessary after passing through an @heating device, @it @it @rofiling it Trigger @ rolling is performed. 2.) Verfahven nach Anspruch 1, dadurch gekennzeichnet, daß die Profilierung der Schlauchfolie i@ Abzugswalzenpaar nur einseitig durch eine der beiden Abzugswalzen erfolgt.2.) method according to claim 1, characterized in that the profiling of the tubular film i @ pair of take-off rollers only on one side through one of the two take-off rollers he follows. 5.) Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 und 2, bestehend aus einer Ringspaltdüse (1) @it Gaszuführungsöffnung, einer Führung (2) für die Flachlegung der @chlauchfolie und eine@ gegebenenfalls heiz- oder kUhlbar ausgebildeten Abdieht- bezw.5.) Device for performing the method according to claim 1 and 2, consisting of an annular gap nozzle (1) with gas supply opening, a guide (2) for laying flat the tubular film and, if necessary, heatable or coolable trained Abdicht- respectively. Abzugswalzenpaar, (4) dadurch gekennzeichnet, daß wesigstens eine der Abzuswalzen ; it einer @rofilierung versehen ist. A pair of take-off rollers (4), characterized in that at least one the rolling; it is provided with @rofiling. 4.) Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß vor der. eintritt der Schlauchfolie eine Heizvorrichtung angeordnet ist. -L e e r s e i t e4.) Device according to claim 3, characterized in that before the. When the tubular film enters, a heating device is arranged. -L e e r e i t e
DE19621504915 1962-10-03 1962-10-03 Process and device for the production of non-slip blown films Pending DE1504915A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC032126 1962-10-03

Publications (1)

Publication Number Publication Date
DE1504915A1 true DE1504915A1 (en) 1969-07-10

Family

ID=7432330

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19621504915 Pending DE1504915A1 (en) 1962-10-03 1962-10-03 Process and device for the production of non-slip blown films

Country Status (4)

Country Link
AT (1) AT267160B (en)
DE (1) DE1504915A1 (en)
GB (1) GB989323A (en)
LU (1) LU44493A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1033244C2 (en) * 2007-01-17 2008-07-18 Fuji Seal Europe Bv Device for manufacturing sleeve-shaped foil envelopes from a strip of sleeve-like foil material.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475457A1 (en) * 1980-02-08 1981-08-14 Charbonnages Ste Chimique SEED FILMS OBTAINED FROM ETHYLENE-PROPYLENE COPOLYMERS, PROCESS FOR THE PRODUCTION THEREOF AND INSTALLATION FOR CARRYING OUT SAID METHOD
DE19635697A1 (en) * 1996-09-03 1998-03-05 Bernd Buescherhoff Process for the production of flat parts, in particular plastic films, by means of extrusion, flat part produced by extrusion, in particular plastic film, and device for extruding flat parts, in particular plastic films
DE19749106C2 (en) * 1997-11-06 2001-02-08 Kiefel Gmbh Paul Process for embossing materials
CZ299750B6 (en) * 2004-06-22 2008-11-12 Acf - Cz, Spol. S R. O. Process for producing endless patterned plastic foil and apparatus for making the same
DE102012015462A1 (en) 2012-08-07 2014-02-13 Reifenhäuser GmbH & Co. KG Maschinenfabrik Blown film plant, process for producing a blown film web and film produced therewith
BR112016008316B1 (en) 2013-10-15 2022-01-18 Reifenhãuser Gmbh & Co. Kg Maschinenfabrik MANUFACTURING METHOD OF A BLOW-PRODUCED FILM SHEET AS WELL AS BLOW-PRODUCED FILM EQUIPMENT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1033244C2 (en) * 2007-01-17 2008-07-18 Fuji Seal Europe Bv Device for manufacturing sleeve-shaped foil envelopes from a strip of sleeve-like foil material.
WO2008088209A2 (en) * 2007-01-17 2008-07-24 Fuji Seal Europe B.V. Device for forming sleeve-like foil envelopes from a continuous flat strip of a sleeve-like foil material
WO2008088209A3 (en) * 2007-01-17 2008-09-12 Fuji Seal Europe Bv Device for forming sleeve-like foil envelopes from a continuous flat strip of a sleeve-like foil material

Also Published As

Publication number Publication date
AT267160B (en) 1968-12-10
GB989323A (en) 1965-04-14
LU44493A1 (en) 1963-11-23

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