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DE10323941A1 - Patterned flat plastic film production, in particular for linear Fresnel lenses, involves passing melt strip between belts which move around a forming roll followed by cooling plates - Google Patents

Patterned flat plastic film production, in particular for linear Fresnel lenses, involves passing melt strip between belts which move around a forming roll followed by cooling plates Download PDF

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Publication number
DE10323941A1
DE10323941A1 DE2003123941 DE10323941A DE10323941A1 DE 10323941 A1 DE10323941 A1 DE 10323941A1 DE 2003123941 DE2003123941 DE 2003123941 DE 10323941 A DE10323941 A DE 10323941A DE 10323941 A1 DE10323941 A1 DE 10323941A1
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Germany
Prior art keywords
melt
belts
cooling
strip
cooling plates
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.)
Granted
Application number
DE2003123941
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German (de)
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DE10323941B4 (en
Inventor
Michael Schröder
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.)
Heinrich Friedrich Schroder KG
HEINRICH FRIEDRICH SCHROEDER K
Original Assignee
Heinrich Friedrich Schroder KG
HEINRICH FRIEDRICH SCHROEDER K
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Priority to DE10323941A priority Critical patent/DE10323941B4/en
Publication of DE10323941A1 publication Critical patent/DE10323941A1/en
Application granted granted Critical
Publication of DE10323941B4 publication Critical patent/DE10323941B4/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00278—Lenticular sheets
    • B29D11/00288—Lenticular sheets made by a rotating cylinder
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
    • B29C37/0075—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other using release sheets
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/44—Compression means for making articles of indefinite length
    • B29C43/48—Endless belts
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • 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
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/9145—Endless cooling belts
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • 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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • B29L2011/005—Fresnel lenses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

An extruded plastic strip(9) runs between two synchronously moving endless metal belts(1,4) running around part of a forming roll(5) and enters a cooling station with two flat cooling plates(11,12). The cooling plates compress the melt strip while cooling and an engraved pattern on one of the belts is impressed into the surface of the plastic strip. The melt strip(9) is pressed towards the forming roll(5) by an endless tensioning belt(4). Roll temperature is similar to that of the melt strip. In a process variation the melt strip may be prefabricated and is passed between heaters to soften before entering the compression gap between the belts. When forming a pattern on both sides of the plastic strip, both belts are engraved and one acts as a tensioning belt. Cooling plates may be internally cored for cooling fluid or have bores through which pressurized water flows to meet the rear face of the belts. An independent claim is included for the process plant which has two or more pairs of rolls and the tensioning belt(4) and engraving belt(1) run around part of the forming roll(5) surface.

Description

Die Erfindung betrifft ein Verfahren nach dem Patentanspruch 1 und eine Vorrichtung zur Ausübung des Verfahrens nach den Patentansprüchen 6 bis 8.The The invention relates to a method according to claim 1 and a Exercise device the method according to claims 6 to 8.

Zweck der Erfindung ist eine Steigerung der Wirtschaftlichkeit und Qualität bei bekannten Produkte, die mit der Anwendung bekannter Verfahren zur Herstellung optisch abbildungsfähiger, flächiger Produkte, insbesondere linearer Stufenlinsen aller Art aus Kunststoffen, beispielsweise aus PMMA mit Gravurtiefen bis maximal 1 mm. hergestellt werden.purpose the invention is an increase in economy and quality in known Products using known manufacturing processes optically more imageable, flat Products, in particular linear step lenses of all kinds, made of plastics, for example made of PMMA with engraving depths of up to 1 mm. manufactured become.

In der Deutschen Patentschrift 199 43 604 C2 ist ein Verfahren beschrieben welches ebenfalls die kontnuierliche Herstellung von endlosen, optisch abbildungsfähigen Folien, Bahnen und Platten aus Kunststoffen zum Inhalt hat wie auch die der Entgegenhaltungen in bezeichneter Patentschrift. Das angezogene patentierte Verfahren setzt die Verwendung einer Gravurwalze voraus, die während einer Umdrehung in einem definierten Durchgangsbereich auf die Temperatur der Kunststoffschmelze zu bringen und in einem weiteren, definierten Bereich auf die Erstarrungstemperatur derselben abzusenken ist. Die Lösung des entsprechenden thermodynamischen Problems wurde in einer Walzenkonstruktion gefunden, bei der sich der Temperaturwechsel in einem dünnen Metallzylinder ereignet, der durch eine minimal wärmeleitfähige Isolierschicht von dem Walzenkern nahezu thermisch getrennt ist. Bei der kontinuierlichen Herstellung optisch abbildungsfähiger Folien und Bahnen nach diesem Verfahren bis zu 1 mm Wandstärke zeigt die Praxis, daß die errechneten Parameter und Werte zutreffen und das Verfahren wirtschaftlich genutzt werden kann. Bei Bahnen und Platten mit Wandstärken über 1 mm sind thermische und rheologische Probleme zu bewältigen, die sich nur auf Kosten der Produktionswirtschaftlichkeit und Qualität der Produkte lösen lassen. Beispielsweise muß nach dem bekannten Verfahren das wandstärkere Produkt vor der völligen Aushärtung im weichplastischen Zustand von der Gravurwalze abgenommen werden, um es in der Planlage aushärten zu lassen. Dabei kommt es bei dem Übergang des erstarrenden Schmelzenbandes aus der Rundung der Walze in die Planlage zur Stauchung der glatten Produktoberfläche und zur Streckung der strukturierten Fläche. Je größer der Gravurwalzendurchmesser ist, je geringer ist die Differenz zwischen Stauchung und Streckung der sich gegenüber liegenden Oberflächen. Trotzdem ist bei der Abnahme des notwendigerweise noch weichplastischen Materials aus der formenden Gravur problematisch, da beim übergang der Kunststoffschmelze aus dem weichplastischen in den hartelastischen Zustand eine unkontrollierte Volumenkontraktion (Schwindung) zu eliminieren ist, die durch eine qualitätsmindernde Rundung spitzwinkeliger Strukturen in Erscheinung tritt.In German Patent 199 43 604 C2 describes a method which also involves the continuous production of endless, optically imageable films, Sheets and sheets made of plastic have as much content as that the citations in the designated patent. The tightened patented process requires the use of an engraving roller, the while one revolution in a defined passage range to the temperature bring the plastic melt and in another, defined Lower the range to the solidification temperature of the same. The solution the corresponding thermodynamic problem was found in a roller construction, where the temperature change occurs in a thin metal cylinder, by a minimally thermally conductive insulating layer is almost thermally separated from the roll core. With the continuous Production of optically imageable foils and shows sheets with this method up to 1 mm wall thickness the practice that the calculated parameters and values apply and the process is economical can be used. For sheets and panels with wall thicknesses over 1 mm are thermal and rheological problems that can only be tackled at the expense the production economy and quality of the products. For example, after the well-known process, the product with thicker walls before it is completely hardened in soft plastic Condition can be removed from the engraving roller to keep it flat harden to to let. It happens at the transition of the solidifying melt strip from the rounding of the roller into the Flatness for compressing the smooth product surface and for stretching the structured one Area. The bigger the Engraving roller diameter is, the smaller the difference between Compression and stretching of the opposing surfaces. Nevertheless is in the process of removing the still soft plastic material problematic from the engraving, because the transition of the plastic melt an uncontrolled from the soft plastic to the hard elastic state Volume contraction (shrinkage) is eliminated by a quality-reducing Rounding of acute-angled structures appears.

Gemäß der festgestellten Mängel bekannter Verfahren zur kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, insbesondere Bahnen und Platten aus Kunststoffen lag der Erfindung die Aufgabe zu Grunde, die Durchführung des Verfahrens in der Weise zu kontrollieren, daß der übergang der Kunststoffschmelze aus dem weichplastischen in den hartelastischen Zustand nach Verlassen des Walzenspaltes aus der Walzenrundung in Planlage im geschlossenen Formungsraum erfolgt. Die Lösung der Aufgabe kennzeichnet sich dadurch, daß ein aus der Breitschlitzdüse eines Extruders austretendes Schmelzenband einem Kalander zugeführt wird und darin zwischen zwei, je mindestens ein Walzenpaar teilweise umschlingenden, endlosen, vorzugsweise aus Metall bestehenden Bändern gebracht wird, wovon eines der Bänder mit einer optisch abbildungsfähigen Struktur versehen ist, die auf einer Oberfläche des Schmelzenbandes abgeformt wird und zwischen den anliegenden Bändern, von der Walze abwandernd in Planlage, zur Aushärtung zwischen zwei Kühlplatten transportiert wird, um nach Verlassen derselben an der jeweiligen Umlenkung der Bänder als Fertigprodukt ausgefahren wird. According to the found defects known processes for the continuous production of endless, optically imageable Foils, especially sheets and plates made of plastics, lay Invention based on the object, the implementation of the method in the Way to control that transition the plastic melt from the soft plastic to the hard elastic Condition after leaving the roll gap from the roll rounding in flat position takes place in the closed molding room. The solution to the problem features by the fact that a from the slot die an extruder-fed melt strip is fed to a calender and partially between two, at least one pair of rollers looping, endless, preferably made of metal bands becomes one of the tapes with an optically imageable Structure is provided, which is molded on a surface of the melt strip and migrating from the roller between the adjacent belts in flat position, for curing between two cooling plates is transported to after leaving the same at the respective Deflection of the belts is extended as a finished product.

Auf der Zeichnung sind Verfahrensbedingungen und ein Ausführungsbeipiel der erfindungsgemäßen Vorrichtung zur Ausübung des Verfahrens der kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, insbesondere Bahnen und Platten aus Kunststoff mit maximalen Gravurtiefen bis zu 1 mm dargestelltOn The drawing includes process conditions and an example of execution the device according to the invention to exercise the process of continuous production of endless, optically imageable films, in particular sheets and plates made of plastic with maximum engraving depths up to shown at 1 mm

Es bedeuten: It mean:

1. Schemazeichnung eines Ausführungsbeispiels der erfindungsgemäßen Einrichtung zur Durchführung des Verfahrens der kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, insbesondere Bahnen und Platten aus Kunststoff mit maximalen Gravurtiefen bis zu 1 mm 1 , Schematic drawing of an embodiment of the device according to the invention for carrying out the process for the continuous production of endless, optically imageable films, in particular webs and plates made of plastic with maximum engraving depths of up to 1 mm

2 Stark vergrößerter Ausbruch aus dem Schnitt A-A eines Ausführungsbeispiels der Kühlungseinrichtung der Vorrichtung gemäß 1 2 A greatly enlarged cutout from the section AA of an exemplary embodiment of the cooling device according to the device 1

3 Stark vergrößerter Ausbruch aus dem Schnitt A-A eines zweiten Ausführungsbeispiels der Kühleinrichtung der Vorrichtung gemäß 1 Aus der Breitschlitzdüse (8) fließt das Schmelzenband (9) zwischen das, die Formwalze (1) halb umschlingende Gravurband (1) und zwischen das, die Einlaufwalze (7) umschlingende Spannband (4) und mit beiden Bändern durch eine Kühlstation (11) und (12) in der die völlige Aushärtung des Schmelzenbandes erfolgt. Nach der Umlenkung beider Bänder über die Streckenwalze (6), bzw. die Spannwalze (10) verlässt das ebene, plan liegende, optisch abbildungsfähige Produkt die erfindungsgemäße Vorrichtung. Das Spannband (4) ist auf der, dem Schmelzenband anliegenden Fläche spiegelnd poliert indessen für die rückseitige Fläche ein Feinschliff zur Erfüllung der Gleitfunktion auf der Gleitfläche der Kühlplatte (11) genügt. Das Gravurband besteht aus einem, mit einem gravurfähigen Material (3), beispielsweise Kupfer beschichteten Tragband (2) aus Stahl, dessen Rückseite Feinschliffqualität, wie das Spannband, aufweisen soll. Die Achsen der Walzen (6) und (10) sind zum Spannen der jeweiligen Bänder versetzbar. Bei dem Durchlauf des Schmelzenbandes zwischen dem Gravurband und dem Spannband wird die Temperatur der Formwalze (5) und der Einlaufwalze (7) konstant auf der Temperatur der Schmelze beim Austritt aus der Breitschlitzdüse gehalten, so daß das Schmelzenband weichplastisch zwischen die Kühlplatten (11) und (12) der Kühlstation gebracht werden kann. Die Wandstärke des Schmelzenbandes im Walzenspalt soll erfindungsgemäß ein Zehntel stärker sein, als der Abstand der Kühlplatten voneinander, so daß das Schmelzenband während der Aushärtungsphase einem kontrollierten Nachdruck ausgesetzt ist. Damit der Durchgang der, das Schmelzenband transportierenden Bänder unter dem Druck der Kühlplatten möglich ist, wird erfindungsgemäß vorgeschlagen, die Reibflächen (16) mit einer wirksamen Gleitschicht, beispielsweise Teflon zu versehen. (2) Ein weiterer, erfindungsgemäßer Vorschlag kennzeichnet sich dadurch, das Kühlwasser durch die Kühlplatten auf die Bänder zu drücken (3), so daß zwischen den gleitenden Bänderflächen und den Kühlplattenflächen ein Aquaplaningeffekt eintritt. Etwaige Bedenken, daß das Gravurband durch den periodischen Dauerwechsel zwischen Stauchung und Streckung der Gravurfläche eine unzulässige Veränderung der Spiegelqualität der Gravur zur Folge haben könnte sind zu verwerfen, denn das Gravurband ist unter den gleichen Bedingungen graviert, denen es bei seiner Funktionsausübung unterliegt. Die Stauchung bei der Überführung des Bandes von der Wölbung in die Grade kann rechnerisch und praktisch vernachlässigt werden. Die langen Gradelaufstrecken eliminieren eine Stauchung des Gravurbandes. 3 A greatly enlarged cutout from the section AA of a second exemplary embodiment of the cooling device according to the device 1 From the slot die ( 8th ) the melt strip flows ( 9 ) between that, the form roller ( 1 ) half wrap around de Gravurband ( 1 ) and between that, the infeed roller ( 7 ) wrapping strap ( 4 ) and with both belts through a cooling station ( 11 ) and ( 12 ) in which the melt band is completely hardened. After deflecting both belts over the draw roller ( 6 ), or the tension roller ( 10 ) the flat, flat, optically imageable product leaves the device according to the invention. The strap ( 4 ) is mirror-polished on the surface adjacent to the melt strip, however, for the rear surface a fine-tuning to fulfill the sliding function on the sliding surface of the cooling plate ( 11 ) enough. The engraving tape consists of a, with an engravable material ( 3 ), e.g. copper-coated carrier tape ( 2 ) made of steel, the back of which should have fine grinding quality, such as the strap. The axes of the rollers ( 6 ) and ( 10 ) can be moved to tension the respective straps. When the melt belt runs between the engraving belt and the tensioning belt, the temperature of the forming roll ( 5 ) and the infeed roller ( 7 ) kept constant at the temperature of the melt as it emerges from the slot die, so that the melt belt is soft-plastic between the cooling plates ( 11 ) and ( 12 ) can be brought to the cooling station. According to the invention, the wall thickness of the melt strip in the roll gap should be one tenth greater than the distance between the cooling plates, so that the melt strip is subjected to a controlled pressure during the hardening phase. So that the passage of the belts transporting the melt strip under the pressure of the cooling plates is possible, the invention proposes that the friction surfaces ( 16 ) to be provided with an effective sliding layer, for example Teflon. ( 2 ) Another proposal according to the invention is characterized in that the cooling water is pressed onto the belts by the cooling plates ( 3 ), so that an aquaplaning effect occurs between the sliding belt surfaces and the cooling plate surfaces. Any concerns that the engraving band could result in an inadmissible change in the mirror quality of the engraving due to the periodic continuous alternation between compression and extension of the engraving surface, should be rejected, because the engraving band is engraved under the same conditions to which it is subject when it performs its functions. The compression during the transfer of the tape from the curvature to the degrees can be neglected mathematically and practically. The long gradel runs eliminate compression of the engraving belt.

11
Gravurbandengraved belt
22
Tragbandsupporting belt
33
Gravurmaterialengraving material
44
Spannbandstrap
55
Formwalzeforming roll
66
Streckenwalzetrack roller
77
Einlaufwalzeinlet roller
88th
Breitschlitzdüseslot die
99
Schmelzenbandmelt ribbon
1010
Spannwalzetension roller
1111
Kühlplattecooling plate
1212
Gegen-KühlplatteAgainst cooling plate
1313
Produktproduct
1414
Kühlwasser-BohrungenCooling water holes
1515
Druck-und KühlwasserbohrungenPrinting and Cooling water holes
1616
TeflonbelagTeflon coating

Claims (8)

Verfahren zur kontinuierlichen Herstellung von endlosen, optisch abbildungsfähigen Folien, insbesondere Bahnen und Platten aus Kunststoffen mittels Zubereitung einer Kunststoffschmelze in einem Extruder und Entnahme derselben als Schmelzenband aus der Breitsehlitzdüse des Extruders und Weiterführung derselben in einen Kalander dadurch gekennzeichnet, daß das Schmelzenband (9) zwischen zwei synchron laufenden , endlosen Bändern (1) und (4), vornehmlich aus Metall, nach gemeinsamem Teilumlauf der Formwalze (5) in eine, mit zwei ebenen Kühlplatten (11) und (12) ausgestatteten Kühlstation transportiert wird, in der das durchfahrende Schmelzenband unter Druck der Kühlplatten aus dem weichplastischen in den hartelastischen Zustand gebracht wird, wobei die Gravur (3) eines der Bänder auf der Oberfläche des erstarrenden Schmelzenbandes abgeformt wird.Process for the continuous production of endless, optically imageable foils, in particular sheets and plates made of plastics by preparing a plastic melt in an extruder and removing the same as a melt strip from the wide-die nozzle of the extruder and conveying it into a calender, characterized in that the melt strip ( 9 ) between two synchronous, endless bands ( 1 ) and ( 4 ), mainly made of metal, after the partial circulation of the forming roller ( 5 ) in one, with two flat cooling plates ( 11 ) and ( 12 ) equipped cooling station is transported, in which the passing melt band is brought under pressure from the cooling plates from the soft plastic to the hard elastic state, the engraving ( 3 ) one of the tapes is molded on the surface of the solidifying melt tape. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Schmelzenband (9) zwischen dem Gravurband (1) durch das Spannband (4) auf einen Teilumfang der Formwalze (5) gepresst wird, deren Temperatur konstant der Schmelzentemperatur entspricht.Method according to claim 1, characterized in that the melt strip ( 9 ) between the engraving band ( 1 ) by the tensioning strap ( 4 ) on a partial circumference of the form roller ( 5 ) is pressed, the temperature of which constantly corresponds to the melt temperature. Verfahren nach Anspruch 1. und 2. dadurch gekennzeichnet, daß das Schmelzenband (9) aus einem vorgefertigten Kunststoffhalbzeug besteht, welches einen Heizraum bzw Heizkanal durchlaufend in einen Weichplastischen Zustand gebracht wurde.A method according to claim 1 and 2, characterized in that the melt belt ( 9 ) consists of a prefabricated semi-finished plastic product which has been brought into a soft plastic condition continuously through a heating room or heating duct. Verfahren nach Anspruch 1. bis 3,. dadurch gekennzeichnet, daß das Schmelzenband zur doppelseitigen Strukturierung, zwischen zwei Gravurbänder aufgenommen wird, indem. das Spannband ebenfalls mit einer Gravur versehen ist.A method according to claims 1 to 3. characterized, that this Melting tape for double-sided structuring, added between two engraving tapes will by. the strap is also engraved. Verfahren nach mindestens einem der Ansprüche 1. bis 4. dadurch gekennzeichnet, daß die. zwischen den Kühlplatten durchgeführten Bänder auf einer Druckwasserschicht gleiten. Method according to at least one of claims 1 to 4. characterized in that the. between the cooling plates conducted bands slide on a pressurized water layer. Vorrichtung zur Durchführung des Verfahrens nach Ansprüchen 1. bis 4 dadurch gekennzeichnet, daß. mindestens zwei Walzenpaare so angeordnet sind, daß das Spannband (4) mit dem Gravurband. (1) einen Sektor der Formwalze (5) umschlingt.Device for performing the method according to claims 1 to 4, characterized in that. arranged at least two pairs of rollers are that the strap ( 4 ) with the engraving tape. ( 1 ) a sector of the forming roll ( 5 ) wraps around. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1. bis 4. und dem Anspruch 5. dadurch gekennzeichnet, daß die Planflächen, der beiden Kühlplatte (11) und (13) auf denen die Rückseiten der Bänder (1) und (4) gleiten, mit einer Gleitschicht beispielsweise aus Teflon versehen sind. (2)Device for carrying out the method according to claim 1 to 4 and claim 5, characterized in that the flat surfaces, the two cooling plate ( 11 ) and ( 13 ) on which the back of the tapes ( 1 ) and ( 4 ) slide, are provided with a sliding layer, for example made of Teflon. ( 2 ) Vorrichtung zur Ausübung des Verfahrens nach Anspruch 1. bis 4. und den Ansprüchen 5. und 6. dadurch gekennzeichnet, daß durch die Kühlplatten Bohrungen (15) zum Anschluß an eine Druckwasserleitung vorgesehen sind.Device for carrying out the method according to claims 1 to 4 and claims 5 and 6, characterized in that bores ( 15 ) are provided for connection to a pressurized water line.
DE10323941A 2003-05-27 2003-05-27 Process for the continuous production of continuous, optically imageable films, in particular webs and sheets of plastics Expired - Fee Related DE10323941B4 (en)

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WO2012074906A1 (en) * 2010-11-30 2012-06-07 Avery Dennison Corporation Cooling unit for microreplication
CN113580549A (en) * 2021-08-20 2021-11-02 安徽玺越新材料科技有限公司 Hot press unit is used in dull and stereotyped processing of FRP
CN116198067A (en) * 2023-05-05 2023-06-02 江苏明途新材料科技有限公司 Cooling device is used in reflective membrane production

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329868A1 (en) * 1983-08-18 1985-03-07 Killar, Erich, 8000 München Device for embossing product webs made of thermoplastics material and process for producing the embossing tool
JPH11129273A (en) * 1997-10-29 1999-05-18 Ishikawajima Harima Heavy Ind Co Ltd Calender molding equipment
DE19845652C2 (en) * 1998-10-05 2002-11-14 Adolf Seide Device for smoothing and cooling or cooling an extruded material web
DE19943604C2 (en) * 1999-09-11 2002-06-27 Schroeder Heinrich Friedrich Process for the continuous production of endless, optically imageable films, sheets and plates made of plastics and device for carrying out the process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012074906A1 (en) * 2010-11-30 2012-06-07 Avery Dennison Corporation Cooling unit for microreplication
US8784093B2 (en) 2010-11-30 2014-07-22 Avery Dennison Corporation Cooling apparatus for microreplication
RU2583005C2 (en) * 2010-11-30 2016-04-27 Эйвери Деннисон Корпорейшн Cooling unit for microreplication
CN113580549A (en) * 2021-08-20 2021-11-02 安徽玺越新材料科技有限公司 Hot press unit is used in dull and stereotyped processing of FRP
CN113580549B (en) * 2021-08-20 2022-03-11 安徽玺越新材料科技有限公司 A hot pressing device for FRP flat plate processing
CN116198067A (en) * 2023-05-05 2023-06-02 江苏明途新材料科技有限公司 Cooling device is used in reflective membrane production

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