GB1572123A - Reflecting thermoplastically deformable semi-finished product and a process for producing it - Google Patents

Reflecting thermoplastically deformable semi-finished product and a process for producing it Download PDF

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Publication number
GB1572123A
GB1572123A GB9180/77A GB918077A GB1572123A GB 1572123 A GB1572123 A GB 1572123A GB 9180/77 A GB9180/77 A GB 9180/77A GB 918077 A GB918077 A GB 918077A GB 1572123 A GB1572123 A GB 1572123A
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GB
United Kingdom
Prior art keywords
polyester film
product according
metallic coating
lacquer
product
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
Application number
GB9180/77A
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.)
Metzeler Schaum GmbH
Original Assignee
Metzeler Schaum GmbH
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 Metzeler Schaum GmbH filed Critical Metzeler Schaum GmbH
Publication of GB1572123A publication Critical patent/GB1572123A/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • B44C1/14—Metallic leaves or foils, e.g. gold leaf
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
    • B44F1/04—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces after passage through surface layers, e.g. pictures with mirrors on the back
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • 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
    • B32B2307/412—Transparent
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B2551/00—Optical elements
    • B32B2551/08—Mirrors

Landscapes

  • Laminated Bodies (AREA)

Description

(54) REFLECTING, ThERMOPLASTIC ALLY DEFORMABLE, SEMI FINISHED PRODUCT AND A PROCESS FOR PRODUCING IT (71) We, MEIZELER SCHAUM GmbH, of D-8940 Memmingen, Donaustrasse 51, Federal Republic of Germany, a body corporate organised and existing under the laws of the Federal Republic of Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The invention relates to a reflecting, thermoplastically deformable, semi-finished product and a process for producing it.
In the furniture and lighting industries, deformable plastics semi-finished products whose visible surface is a reflecting surface are required for internal finishings and instruments design as well as for many sorts of decoration.
Conventional glass mirrors are unusable for many of these purposes owing to their lack of deformability and their poor machinability. Instead, it is common to use plastics mirrors formed by metallising the rear surface of transparent plastic plates with a reflecting layer by vapour deposition. Of course, it is not possible to metallize plastics plates of this type endlessly by vapour deposition. Besides, the subsequent deformability is very limted by the need to avoid impairing the mirror effect. PVC or CAB films, usually having thicknesses of less than 1 mm, are metallized by vapour deposition in a vacuum with reflecting material, for continuous endless finishing of mirrors.
However, reflecting films of this type have only a low coefficient of reflection, are very soft, are thermally deformable only within very narrow limits, and have a low degree of optical uniformity.
An object of the invention is to provide a reflecting plastics. semi-finished product which may be produced continuously with uniform and high quality optical properties and which is deformable within wide limits without impairing the optical reflecting quality.
According to the invention there is provided a reflecting, thermoplastically deformable plastics product, comprising a transparent polyester film having a thickness of up to 12cur and having a matt side, a metallic coating applied to the said matt side, a protective lacquer covering the metallic coating, and an extruded thermoplastics support material to which the film with its metallic layer and lacquer is laminated by means of an adhesive with the lacquer layer facing inwards.
The metallic coating may be a metallic coloured print or vapour deposition as described in German Offenlegungsschrift 2333 752. Depending upon the metallic dye selected for printing, a mirror having a particular metallic effect is then produced.
The mirror has a particularly high coefficient of reflection and a correspondingly high reflecting brightness if a vacuumdeposited aluminium coating is used as the metallic coating for the matt side of the polyester film.
The adhesive is preferably an elastomer sa that no technical problems are encountered when laminating the support material with the pre-treated polyester film. The use of a polyester film having a thickness of not more than 12,a produces a product which is readily deformable and which may be formed by cutting. A thermoplastically deformable plastics material having a thickness of from 1 to 6 mm is preferably used for the support material so as not to impair the machinability of the product.
By using a thin polyester film for receiving the metallic coating, only negligibly slight distortions in its reflectivity occur.
On the other hand, the layer of support material which is much thicker than the polyester film has the effect of giving the product the mechanical solidity of a conventional plate mirror of traditional design.
Since the volume of the plastic semifinished product is substantially composed of the support material, it is possible to produce a reflecting plastics semi-finished product with particular properties accord ing to the invention without particular problems. Thus particular consideration has been given to the fact that for many purposes, in particular in the sphere of decorations, only materials of low flammability according to DIN 4102 may be used for safety reasons. These requirements may be fulfilled in the reflecting plastic semifinished product according to the invention simply by making the support material of the required low degree of flammability adding suitable materials, as known per Se.
A preferred form of the process according to the invention for the production of the reflecting and thermoplastically deformable plastics semi-finished product according to the invention consists in metallizing the matt side of a polyester film having a thickness of up to 12,a with aluminium by vapour deposition, covering the vapour deposition with a natural lacquer and applying an elastomer-based adhesive, the polyester film thus prepared with the natural lacquer coating being laminated on to a plastic extrudate emerging from a wide slit nozzle and serving as support material, by means of the glazing calender of an extrusion installation.
It is preferable to use a polyester film which is as soft as possible for vapour deposition, since this film is also further cured by the heat of the glazing calender and in the course of subsequent deformation of the plastics semi-finished product.
When a plastics semi-finished product manufactured according to the invention is to be prepared, or in order to deform the product according to the invention, the deformation heating must take place on the side of the product which is turned away from the reflecting surface so that the mirror effect is not impaired.
The product according to the invention has advantageous properties which are required for a decorative working material of this type. Its high reflection value makes it particularly attractive. The polyester film which receives the reflecting material, print or vapour deposition also serves as a protective layer for the visible side after lamination on to the support material. The thermoplastic deformability, for example the ability to be embossed, of the product according to the invention is restricted only bv the thermoDlastic deformability of the thin polyester film.
By metallizing the matt side of the polvester film, the metal coating adheres well to the polyester film, which is a desirable property having regard to the deformation which it mav have to undergo. Furthermore there is a high degree of brightness reflectivity when observing its smooth external side.
The product according to the invention can be drilled, sawn or punched bent through up to 1800 even with a small radius of curvature, and can be embossed hot without the reflectivity being impaired. The product according to the invention is highly shock-resistant, even at extremely low temperatures.
The product according to the invention has the additional advantage of only weighing about 10% at the most of the weight of conventional mirrors.
The accompanying drawing shows a section through a flat, i.e. not yet deformed, plastics, semi-finished product 1 according to the invention, drawn to scale. Its reflecting visible surface 2 is formed by the shiny side 3 of a thin polyester film 4 which has a thickness of up to 1 > , and whose matt side 5 has, for example, an aluminium vapour deposition as the metallic coating 6. During the production of the plastics semi-finished product 1, the transparent polyester film 4 serves firstly as a support for the metallic coating 6, and subsequently, in the completed product, as a mechanical protective layer.
The metallic coating 6 which is preferably vapour-deposited, adheres to the matt side 5 of the polyester film 4 very well. The side turned away from the polyester film is covered with a protective covering 7 made of a natural lacquer, for example a Copal protective layer. The surface of the covering 7 which is turned away from the metallic coating 6 is provided with an elastomerbased adahesive 8. This adhesive 8 serves for laminating the polyester film which is prepared in this way on to a thermoplastically deformable support material 9 which is preferably between 1 and 6 mm thick, and which lends mechanical solidity to the plastic semi-finished product.
WHAT WE CLAIM IS : - 1. A reflecting, thermoplastically deformable plastics product, comprising a transparent polyester film having a thickness of up to 12u and having a matt side, a metallic coating applied to the said matt side, a protective lacquer covering the metallic coating, and an extruded thermoplastics s'upport material to which the film with its metallic layer and lacquer is laminated by means of an adhesive with the lacquer layer facing inwards.
2. A product according to claim 1, wherein the metallic coating is obtained by vapour deposition.
3. A product according to claim 2, wherein the metallic coating is coloured.
4. A product according to any preceding claim, wherein the metallic coating is of aluminuim.
5. A product according to any preceding claim, wherein the adhesive is an elastomer.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (14)

**WARNING** start of CLMS field may overlap end of DESC **. ing to the invention without particular problems. Thus particular consideration has been given to the fact that for many purposes, in particular in the sphere of decorations, only materials of low flammability according to DIN 4102 may be used for safety reasons. These requirements may be fulfilled in the reflecting plastic semifinished product according to the invention simply by making the support material of the required low degree of flammability adding suitable materials, as known per Se. A preferred form of the process according to the invention for the production of the reflecting and thermoplastically deformable plastics semi-finished product according to the invention consists in metallizing the matt side of a polyester film having a thickness of up to 12,a with aluminium by vapour deposition, covering the vapour deposition with a natural lacquer and applying an elastomer-based adhesive, the polyester film thus prepared with the natural lacquer coating being laminated on to a plastic extrudate emerging from a wide slit nozzle and serving as support material, by means of the glazing calender of an extrusion installation. It is preferable to use a polyester film which is as soft as possible for vapour deposition, since this film is also further cured by the heat of the glazing calender and in the course of subsequent deformation of the plastics semi-finished product. When a plastics semi-finished product manufactured according to the invention is to be prepared, or in order to deform the product according to the invention, the deformation heating must take place on the side of the product which is turned away from the reflecting surface so that the mirror effect is not impaired. The product according to the invention has advantageous properties which are required for a decorative working material of this type. Its high reflection value makes it particularly attractive. The polyester film which receives the reflecting material, print or vapour deposition also serves as a protective layer for the visible side after lamination on to the support material. The thermoplastic deformability, for example the ability to be embossed, of the product according to the invention is restricted only bv the thermoDlastic deformability of the thin polyester film. By metallizing the matt side of the polvester film, the metal coating adheres well to the polyester film, which is a desirable property having regard to the deformation which it mav have to undergo. Furthermore there is a high degree of brightness reflectivity when observing its smooth external side. The product according to the invention can be drilled, sawn or punched bent through up to 1800 even with a small radius of curvature, and can be embossed hot without the reflectivity being impaired. The product according to the invention is highly shock-resistant, even at extremely low temperatures. The product according to the invention has the additional advantage of only weighing about 10% at the most of the weight of conventional mirrors. The accompanying drawing shows a section through a flat, i.e. not yet deformed, plastics, semi-finished product 1 according to the invention, drawn to scale. Its reflecting visible surface 2 is formed by the shiny side 3 of a thin polyester film 4 which has a thickness of up to 1 > , and whose matt side 5 has, for example, an aluminium vapour deposition as the metallic coating 6. During the production of the plastics semi-finished product 1, the transparent polyester film 4 serves firstly as a support for the metallic coating 6, and subsequently, in the completed product, as a mechanical protective layer. The metallic coating 6 which is preferably vapour-deposited, adheres to the matt side 5 of the polyester film 4 very well. The side turned away from the polyester film is covered with a protective covering 7 made of a natural lacquer, for example a Copal protective layer. The surface of the covering 7 which is turned away from the metallic coating 6 is provided with an elastomerbased adahesive 8. This adhesive 8 serves for laminating the polyester film which is prepared in this way on to a thermoplastically deformable support material 9 which is preferably between 1 and 6 mm thick, and which lends mechanical solidity to the plastic semi-finished product. WHAT WE CLAIM IS : -
1. A reflecting, thermoplastically deformable plastics product, comprising a transparent polyester film having a thickness of up to 12u and having a matt side, a metallic coating applied to the said matt side, a protective lacquer covering the metallic coating, and an extruded thermoplastics s'upport material to which the film with its metallic layer and lacquer is laminated by means of an adhesive with the lacquer layer facing inwards.
2. A product according to claim 1, wherein the metallic coating is obtained by vapour deposition.
3. A product according to claim 2, wherein the metallic coating is coloured.
4. A product according to any preceding claim, wherein the metallic coating is of aluminuim.
5. A product according to any preceding claim, wherein the adhesive is an elastomer.
6. A product according to any pre
ceding claim, wherein the support material has a thickness of from 1 to 6 mm.
7. A product according to any preceding claim, wherein the support material is produced from a material of low flammability according to DIN 4102.
8. A product according to any preceding claim, wherein the lacquer is a natural lacquer.
9. A reflecting, thermoplastically deformable plastics semi-finished product, substantially as herein described with reference to the accompany drawing.
10. A process for the production of a product according to claim 1, wherein the matt side of a transparent polyester film having a thickness of up to 12 is provided with a metallic coating, the metallic coating is covered with a lacquer on to which an elastomer-based adhesive is applied, and the polyester film with its metallic coating and lacquer facing inwards is laminated on to a plastic extrudate emerging from a wide slit nozzle which extrudate serves as a support material.
11. A process according to claim 10, wherein the lacquer is a natural lacquer.
12. A process according to claim 10 or 11, wherein the said lamination is carried out by means of the glazing calender of an extrusion installation.
13. A process according to any one of claims 10 to 12, wherein the metallic coating is provided by vapour deposition.
14. A product when produced by the process as claimed in any one of claims 10 to 13.
GB9180/77A 1976-03-06 1977-03-04 Reflecting thermoplastically deformable semi-finished product and a process for producing it Expired GB1572123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2609452A DE2609452C3 (en) 1976-03-06 1976-03-06 Reflective, plate-shaped semi-finished plastic product and a method for producing such a semi-finished product

Publications (1)

Publication Number Publication Date
GB1572123A true GB1572123A (en) 1980-07-23

Family

ID=5971763

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9180/77A Expired GB1572123A (en) 1976-03-06 1977-03-04 Reflecting thermoplastically deformable semi-finished product and a process for producing it

Country Status (4)

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DE (1) DE2609452C3 (en)
FR (1) FR2342846A1 (en)
GB (1) GB1572123A (en)
IT (1) IT1116288B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289434A (en) * 1994-05-19 1995-11-22 Spafax Int Ltd Making an optical component
CN116021862A (en) * 2022-10-25 2023-04-28 福建省安元光学科技有限公司 Embossing method, device and equipment for improving brightness of thermoplastic reflective sheet

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811151C3 (en) * 1978-03-15 1981-06-19 Flachglas AG, 8510 Fürth Process for the production of multilayer composite films
US4358503A (en) * 1979-12-03 1982-11-09 Homeyer H H H Glass fibre reinforced plastic sheeting material
FR2538312B1 (en) * 1982-12-28 1986-11-07 Rambaud Jean Michel METHOD FOR MANUFACTURING DECORATIVE PANELS
DE4017220A1 (en) * 1990-05-29 1991-01-31 Tvg Thermo Vac Entwicklungs Gm Multicolour coating layer on plastic films for interference filters - is produced on roll and has thin metal film, transparent varnish with varying thickness and final metal layer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1129939A (en) * 1954-04-06 1957-01-29 Du Pont Laminated product with metallic finish and process for its preparation
FR1297005A (en) * 1961-08-07 1962-06-22 Johnson & Johnson Adhesive composition and adhesive tape obtained from this composition
DE1932890C3 (en) * 1969-06-28 1975-09-11 Basf Ag, 6700 Ludwigshafen Multi-layer component
GB1372237A (en) * 1970-09-25 1974-10-30 Pictorial Prod Inc Process for the production of an article having an integral mirror surface
GB1399624A (en) * 1972-08-15 1975-07-02 Formica Int Decorative plastics laminates
DE2333752B2 (en) * 1973-07-03 1976-03-25 Metzeler-Plastic GmbH, 5171 Kirchberg DEFORMABLE PLASTIC SEMI-FINISHED PRODUCT AND METHOD FOR MANUFACTURING IT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289434A (en) * 1994-05-19 1995-11-22 Spafax Int Ltd Making an optical component
CN116021862A (en) * 2022-10-25 2023-04-28 福建省安元光学科技有限公司 Embossing method, device and equipment for improving brightness of thermoplastic reflective sheet
CN116021862B (en) * 2022-10-25 2024-06-11 福建省安元光学科技有限公司 Embossing method, device and equipment for improving brightness of thermoplastic reflective sheet

Also Published As

Publication number Publication date
DE2609452B2 (en) 1981-06-04
DE2609452A1 (en) 1977-09-08
IT1116288B (en) 1986-02-10
FR2342846B1 (en) 1983-08-19
FR2342846A1 (en) 1977-09-30
DE2609452C3 (en) 1982-02-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940304