DE10307808B4 - Method for reducing the reflection value of a microprismatic reflective foil - Google Patents
Method for reducing the reflection value of a microprismatic reflective foil Download PDFInfo
- Publication number
- DE10307808B4 DE10307808B4 DE10307808A DE10307808A DE10307808B4 DE 10307808 B4 DE10307808 B4 DE 10307808B4 DE 10307808 A DE10307808 A DE 10307808A DE 10307808 A DE10307808 A DE 10307808A DE 10307808 B4 DE10307808 B4 DE 10307808B4
- Authority
- DE
- Germany
- Prior art keywords
- film
- reflective
- microprismatic
- microprisms
- reflective foil
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011888 foil Substances 0.000 title claims abstract description 17
- 238000010030 laminating Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 238000002310 reflectometry Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/027—Thermal properties
-
- 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
- B29C43/30—Making multilayered or multicoloured articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
-
- 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
- B29C43/46—Rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/416—Reflective
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2590/00—Signboards, advertising panels, road signs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/10—Registration, licensing, or like devices
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Verfahren zur Verminderung des Reflexwertes einer mikroprismatischen Reflexfolie (1), dadurch gekennzeichnet, daß auf die mikroprismatische Seite der Reflexfolie (1) unter Berücksichtigung des Anpressdrucks (p) und/oder der Laminiertemperatur (T) eine zweite Folie (3) ganzflächig so auflaminiert wird, daß die total reflektierenden Wirkflächen der Mikroprismen (2) verkleinert werden.method for reducing the reflection value of a microprismatic reflective foil (1), characterized in that taking into account the microprismatic side of the reflective tape (1) the contact pressure (p) and / or the laminating temperature (T) a second film (3) over the entire surface is laminated so that the totally reflective active surfaces the microprisms (2) are reduced.
Description
Die Erfindung betrifft ein Verfahren der im Oberbegriff von Anspruch 1 niedergelegten Art.The The invention relates to a method as defined in the preamble of claim 1 type laid down.
Ein
solches Verfahren kann beispielsweise Teil eines Verfahrens zur
Herstellung eines Schildes, insbesondere eines Kraftfahrzeug-Kennzeichenschildes
sein, wie es in der älteren
deutschen Patentanmeldung
Aus
der Druckschrift
Aufgabe
der vorliegenden Erfindung ist es, zusätzlich zu den in der deutschen
Patentanmeldung
Zur Lösung dieser Aufgabe sieht die Erfindung die im Anspruch 1 niedergelegten Merkmale vor.to solution This object is achieved by the invention laid down in claim 1 Features before.
Anders als bei dem in der eingangs genannten Patentanmeldung beschriebenen Verfahren werden gemäß der vorliegenden Erfindung die total reflektierenden Wirkflächen der mikroprismatischen Strukturen an der Rückseite der Reflexfolie nicht mit Hilfe einer Klebstoffschicht sondern dadurch verkleinert, daß die Reflexfolie mit einer zweiten Kunststofffolie laminiert, insbesondere unter Wärme- und Druckeinwirkung verschweißt bzw. heiß verprägt wird. Im Rahmen der Erfindung kann dies auf unterschiedlichen Weisen und unter Verwendung unterschiedlicher Folien-Materialien erfolgen.Different than in the described in the aforementioned patent application Methods are according to the present Invention the totally reflective active surfaces of the microprismatic structures at the back the reflective film not with the help of an adhesive layer but thereby reduced that the Reflective foil laminated with a second plastic film, in particular under heat and pressure welded or hot stamped. In the context of the invention this can be done in different ways and done using different film materials.
Gemäß einem bevorzugten Verfahren werden die beiden Folien mit Hilfe von einer oder zwei Walzen gegeneinander gepreßt, die über die Folienoberfläche hinweg geführt wird beziehungsweise zwischen denen die beiden Folien hindurchlaufen. Dabei läßt man vor zugsweise unmittelbar vor und/oder in der Berührungszone der Walzen(n) mit der oder den Folien auf diese einen Hitzegradienten so einwirken, daß sich zumindest eine der beiden Folien lokal über die Erweichungstemperatur ihres Kunststoffmaterials erwärmt.According to one preferred methods are the two films with the aid of a or two rolls pressed against each other across the film surface guided is or between which pass through the two slides. there left before preferably immediately before and / or in the contact zone of the rollers (s) with the or the films act on these a heat gradient so that at least one of the two slides locally over heats the softening temperature of their plastic material.
Je nachdem, ob die Erweichungstemperatur der Reflexfolie oder die der weiteren Folie über der gewählten Arbeitstemperatur liegt (und die der jeweils anderen Folie darunter) wird die erfindungsgemäße Verminderung der total reflektierenden Wirkflächen der mikroprismatischen Strukturen auf unterschiedliche Weise erreicht. Wird durch den gewählten Temperaturgradienten die Unterseite der Reflexfolie, die Oberseite der zweiten Folie aber nicht oder nur gering erweicht, so werden nach Maßgabe des gewählten Drucks p und der Geschwindigkeit v, mit der sich die Laminierfront vorwärts bewegt, die von der Unterseite der Reflexfolie vorstehenden prismatischen Strukturen mehr oder weniger stark flach gedrückt, wodurch sich ihre total reflektierenden Wirkflächen mehr oder weniger stark verkleinern.ever depending on whether the softening temperature of the reflective foil or the another slide over the chosen one Working temperature (and that of the other film below) becomes the reduction of the invention the totally reflective active surfaces achieved the microprismatic structures in different ways. Is selected by the Temperature gradients the bottom of the reflective foil, the top the second film but not or only slightly softened, so be in accordance with of the chosen Pressure p and the speed v, with which the laminating front forward moved, the prismatic protruding from the bottom of the reflective foil Structures are pressed more or less flat, resulting in their total reflective active surfaces more or less downsize.
Im umgekehrten Fall dringen die mikroprismatischen Strukturen mehr oder weniger tief in die erweichte Oberseite der zweiten Folie ein, ohne dabei ihre Form wesentlich zu verändern. Besitzt dann das Material der zweiten Folie den gleichen oder einen ähnlichen optischen Brechungsindex wie das Material der Reflexfolie, so tritt an den eingetauchten Teilen der mikroprismatischen Strukturen keine oder eine starke verminderte Totalreflexion auf. Da auch hier die Eintauchtiefe nicht nur über den Temperaturgradienten sondern auch den Anpressdruck p und die Vorlaufgeschwindigkeit v variiert werden können, kann die Verkleinerung der total reflektierenden Wirkflächen und damit die Verminderung des Reflexionsvermögens der Reflexfolie Innerhalb weiter Grenzen eingestellt werden.in the reverse case, the microprismatic structures penetrate more or less deeply into the softened top of the second sheet, without significantly changing their shape. Then own the material the second film the same or a similar optical refractive index Like the material of the reflective foil, so occurs on the submerged parts the microprismatic structures no or a strong diminished Total reflection on. Since also here the immersion depth not only over the Temperature gradients but also the contact pressure p and the flow speed v can be varied the reduction of the totally reflective effective surfaces and thus reducing the reflectivity of the reflective foil within continue to set limits.
Aus
den Druckschriften
Vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens sind in den Unteransprüchen niedergelegt.advantageous Embodiments of the method according to the invention are in the dependent claims resigned.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnung beschrieben; in dieser zeigen:The Invention will be described below with reference to an embodiment with reference described on the drawing; in this show:
In
Wie
man der
Bei
dem in
Dem
gegenüber
sind in
Um
das Ausmaß der
Abflachung der prismatischen Strukturen
Die
beim Ausführungsbeispiel
nach
Bildet das erfindungsgemäße Verfahren einen Teil eines Herstellungsverfahrens für ein Schild, insbesondere ein Kraftfahrzeug-Kennzeichenschild, so können die Reflexfolie und die zweite Folie zunächst in der oben beschriebenen Weise miteinander laminiert und dann gemeinsam auf die Vorderseite des herzustellenden Schildes durch ein herkömmlich ihres Verfahren wie zum Beispiel Kleben oder Laminieren usw. aufgebracht werden, wobei diese Vorderseite bereits mit einer oder mehreren anderen Schichten, insbesondere einem Elektrolumineszenz-Flachkondensator bedeckt sein kann.forms the inventive method a part of a method of manufacturing a sign, in particular a motor vehicle license plate, so the reflective foil and the second slide first laminated together in the manner described above and then together on the front of the sign to be produced by a conventional her Applied methods such as gluing or laminating, etc. be, with this front already with one or more other layers, in particular an electroluminescent flat capacitor can be covered.
Alternativ
hierzu ist es auch möglich,
zuerst die zweite Folie auf die Vorderseite des herzustellenden
Schildes in der eben beschriebenen Weise aufzubringen und auf diese
dann die Reflexfolie aufzulaminieren, wobei wiederum der Anpressdruck
p, die Temperatur T und/oder die Geschwindigkeit v, mit der die
Laminierfront voranschreitet, als Parameter zum Einstellen des Grades
der Verminderung der Reflektivität
der Reflexfolie
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307808A DE10307808B4 (en) | 2003-02-24 | 2003-02-24 | Method for reducing the reflection value of a microprismatic reflective foil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307808A DE10307808B4 (en) | 2003-02-24 | 2003-02-24 | Method for reducing the reflection value of a microprismatic reflective foil |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10307808A1 DE10307808A1 (en) | 2004-09-02 |
DE10307808B4 true DE10307808B4 (en) | 2009-04-09 |
Family
ID=32797701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10307808A Expired - Fee Related DE10307808B4 (en) | 2003-02-24 | 2003-02-24 | Method for reducing the reflection value of a microprismatic reflective foil |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10307808B4 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69411936T2 (en) * | 1993-10-20 | 1999-04-08 | Minnesota Mining And Mfg. Co., Saint Paul, Minn. | ULTRAFLEXIBLE RETRORE-REFLECTIVE CUBED COMPOSITE FILM AND PRODUCTION METHOD |
DE69606865T2 (en) * | 1995-05-18 | 2000-11-16 | Reflexite Corp., Avon | METHOD FOR PRODUCING A REFLECTIVE FILM |
DE69705218T2 (en) * | 1996-04-30 | 2002-02-28 | Minnesota Mining And Mfg. Co., St. Paul | METHOD FOR PRODUCING GLINTERING CUBE-CORNED RETRO-REFLECTING FILMS |
DE69616309T2 (en) * | 1995-05-19 | 2002-04-18 | Reflexite Corp., Avon | RETRO-REFLECTIVE PRISM ARRANGEMENT WITH BALLS SHAPED IN IT |
DE69903917T2 (en) * | 1998-01-26 | 2003-09-04 | Reflexite Corp., Avon | RETRORE-REFLECTIVE MATERIAL WITH PRINTED PATTERNS |
DE10255377A1 (en) * | 2002-11-27 | 2004-06-17 | Fer Fahrzeugelektrik Gmbh | Process for the production of a sign |
-
2003
- 2003-02-24 DE DE10307808A patent/DE10307808B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69411936T2 (en) * | 1993-10-20 | 1999-04-08 | Minnesota Mining And Mfg. Co., Saint Paul, Minn. | ULTRAFLEXIBLE RETRORE-REFLECTIVE CUBED COMPOSITE FILM AND PRODUCTION METHOD |
DE69606865T2 (en) * | 1995-05-18 | 2000-11-16 | Reflexite Corp., Avon | METHOD FOR PRODUCING A REFLECTIVE FILM |
DE69616309T2 (en) * | 1995-05-19 | 2002-04-18 | Reflexite Corp., Avon | RETRO-REFLECTIVE PRISM ARRANGEMENT WITH BALLS SHAPED IN IT |
DE69705218T2 (en) * | 1996-04-30 | 2002-02-28 | Minnesota Mining And Mfg. Co., St. Paul | METHOD FOR PRODUCING GLINTERING CUBE-CORNED RETRO-REFLECTING FILMS |
DE69903917T2 (en) * | 1998-01-26 | 2003-09-04 | Reflexite Corp., Avon | RETRORE-REFLECTIVE MATERIAL WITH PRINTED PATTERNS |
DE10255377A1 (en) * | 2002-11-27 | 2004-06-17 | Fer Fahrzeugelektrik Gmbh | Process for the production of a sign |
Also Published As
Publication number | Publication date |
---|---|
DE10307808A1 (en) | 2004-09-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |