Fabrication of polychromatic laminar polymer material with optical effects

FIELD: process engineering.

SUBSTANCE: invention relates to optics and lighting engineering exploiting laminar and polarizing polymer-based materials to get bright visual effects without use of dyes and monochromatic light emitters. Invention describes the production of light panel of laminar pack of polymer films for colour control in transmitted light flux. This process arrangement of two anisotropic translucent and colourless films of hard elastic polypropylene at right angle between two sheets of light polarizing film material. One of said films is intermittently stretched by 25-35% and, then, returned to its initial size. Said film is displaces relative to the panel other plies at mechanical effects applied thereto.

EFFECT: simplified process, enhanced performances, rule out application of electric power for colour variation.

3 cl, 5 dwg, 1 tbl, 12 ex

 

The technical field to which the invention relates

The invention relates to optics and lighting technology, and using a multilayer polarizing materials based on polymers to produce a bright visual effects, and more particularly to a method of color management of multi-layer panels made of polymer materials without the use of dyes and monochromatic light emitters.

The offer can be used by decorators and designers in the artistic and promotional purposes, for creating multi-color panels, attracting the attention of customers and potential consumers of the advertised services in the production of fluorescent screens security warning inscriptions on fixed structures or moving vehicles, various light panels with multi-color images on transparent advertising panels, shop Windows and in the lighted Windows of the premises.

The level of technology

A method of producing a multi-color material with optical effects without the use of dyes by forming a micro-optics structure of the diffraction grating on the substrate in the form of a surface structure, covered with a protective layer, completely or partially, hidden patterns, made with the possibility of the formation of the observer's holographic or other visual effect, DOS�upon the diffraction of light.

The method includes the stages at which choose the form of the profile of the diffraction grating so that the light diregiovani from the structure of the diffraction grating and corresponding to a specific wavelength of visible light, directed into one or more diffraction order, with each diffraction order corresponds to a particular direction of observation visual effect on the wavelength of visible light, and yet remains a free range of angles in which the visual effect is absent or negligible (Patent RF 2297651, IPC G02B 5/18, publ. 20.04.2007). According to the invention it is possible to create a transparent visual effects on opaque light-reflective substrates. The substrate can be a material that is filtered and/or reflect light differently, i.e., they are painted materials. Such multilayer film of transparent plastic can be used, for example, as a packaging material through which it is possible to consider the packaged item. The invention allows to realize a visual diffraction effect so that it was visible in the right color in a certain direction. This is especially important, for example, when an object needs to reproduce a certain color or colors, distinctive from the color of the product.

The disadvantage of this method is the complexity of manufacture�the access profile of the diffraction grating and panel Assembly as a whole, as well as the inability to control, i.e., reversible color change panel, after its manufacture.

A method of producing a multi-color layered polymer material comprising an Assembly of a package of translucent polymer base having opposite front and rear surfaces of different roughness and colored film having a rough surface connections, and melting the batch to obtain a layered structure (Patent RF 2470787, IPC B32B 17/10, publ. 27.12.2012, priority dated 08.05.2008. In the known technical solutions are offered to systems, methods and devices associated with the manufacture of translucent and/or transparent material, which contains many of the colored layers of the compositions of the polymers and dyes. Multiple color layers to change the colour, transparency or light transmission of the finished material. the material can contain one or more polymers selected from the group comprising polycarbonates, polyvinyl chloride, polyesters (including sobolifera), acrylic resin, and/or combinations thereof.

The disadvantage of this method is the use of dyes, which, as a rule, are toxic and have limited thermal and light stability.

The closest to the proposed technical essence and purpose is a method for the preparation�Oia multicolor layered polymeric material with optical effects without the use of dyes, comprising open preparations of polymeric films or sheets of polarizing light, mechanical deformation of local compression (hot stamping) parts of at least one preform of a thermoplastic polymer and the Assembly of the package in a certain order, according to which at least one workpiece, a cut of anisotropic material, polarizing light, is placed on the outside of the package, and the workpiece is subjected to hot-pressed, is placed inside (U.S. Patent 6846522, IPC 44F IN 1/04, G02B 5/30, publ. 25.01.2005). Technological method (stage) local mechanical deformation of compression (hot stamping) parts one of the layers multicolor material is carried out to obtain the thickness variation of the middle layer and, consequently, changes in the optical properties of sections of the workpiece of thermoplastic polymer. The resulting hot stamping film thickness variation of the middle layer provides a mosaic effects when observing the color of the laminate at different angles of view.

The disadvantage of this method is the increased intensity, complexity and duration of the technological process of production of material involving the use of equipment for hot stamping of thermoplastic materials, limited to the dimensions of the discontinuity (mosaicism) color �of effektov.

The technical problem to be solved by the invention is the simplification of the method of producing a multicolor laminated polymeric material with optical effects, the expansion of technological possibilities in variation of colors and shades without size restrictions monochrome zones in layered material.

Disclosure of the invention

The problem is solved in that in the method of producing a light panel from a multilayer stack of polymer films to control the color in transmitted light flux is provided by the location between two sheets of film material, polarizing light, two anisotropic transparent and colorless films getcollection polypropylene at a right angle and implementation of periodic mechanical stretching of one of the films by 25-35% with a subsequent reduction of its original size and displacement, relative to the layers panel by mechanical action on it.

Preferably, at least one film material, polarizing light, is made of mirror metallic foil or mirror metallized polymer film.

Preferably, at least one film from getcollection polypropylene pre-treated colorless transparent liquid without causing the dissolution of the contacting polymers.

� the proposed method, at least one film made of a polymer material, pulling in the cold state, and the rest are semi-transparent film of thermoplastic polymer. According to the proposal, at least one film located on the front side panels are made from a material, polarizing light, and the film of polymeric material, pulling in cold condition inside the package, agile, stretched, shortened and moved relative to the other layers panel by mechanical action on it. One outer layer on the rear side of the panel, can be made of mirror metallic foil, mirror, metal or mirrored metallized polymeric film facing the light-reflecting surface inside the package. At least one film of a polymeric material, pulling in the cold state, may be pre-treated colorless transparent liquid without causing the dissolution of the contacting polymers.

The proposal is illustrated by examples of implementation of the method of preparation and color management panel light, as well as schemes of different layout options and operation of the transparent layers in the light panel from polymers.

Brief description of the drawings

Fig.1. The light panel from the polymer�managed in colour when viewed in transmitted light flux: 1 - the top layer of material, polarizing light; 2 - the bottom layer of material, polarizing light; 3 - deformable film of an anisotropic polymer material; 4 - stationary anisotropic film of polymeric material

Fig.2. The cross section of the light panel from polymers with controllable colour when viewed in transmitted light flux: 1 - the top layer of material, polarizing light; 2 - the bottom layer of material, polarizing light; 3 - deformable film of an anisotropic polymer material; 4 - stationary film of an anisotropic polymer material.

Fig.3. Light bar made of polymers with controlled color when observed in reflected light: 1 - the top layer of material, polarizing light; 3 - deformable film of an anisotropic polymer material; 6 - mirror metallized polymer film, mirror-like metal sheet or metal foil.

Fig.4. The light panel from polymers of five layers of polymeric materials with controlled color when viewed in transmitted light flux: 1 - the top layer of material, polarizing light; 2 - the bottom layer of material, polarizing light; 3 - deformable film of an anisotropic polymer material; 4 - stationary film of an anisotropic polymer material; 5 - stationary film of a polymeric material.

Fig.5. Spectrum light�, passing perpendicularly through the front surface of the light panel consists of three layers of different polymers depending on the relative position and magnitude of the elastic deformation of the middle layer of polymeric material: 7 - panel blue color (without deformation of the middle layer); 8 - panel green (during the deformation stretching of the middle layer of polypropylene 25%); 9 - yellow bar (without deformation of the middle layer); 10 - panel pink color (with the deformation of the stretching of the middle layer of polypropylene 35%).

The implementation of the invention

An example of obtaining and color control of the light panel from polymers No. 1. Get the light bar from polymers with the ability to control color when viewed in transmitted light flux representing a four-layer package (Fig.1 and Fig.2) of a transparent and colorless polymer films, two of which are made of getcollections polypropylene, i.e. anisotropic polymer material, pulling in cold condition (3) and (4). Film getcollection polypropylene in the form of ribbons have a right angle between two sheets of film material, polarizing light (1) and (2). The lower side includes a light source, and observing the colour of the cover and its change in different parts when the angle of view are at the top. Transparent and colorless l�options from the film getcollection polypropylene, when viewed at a 90 degree angle through the top sheet film material, polarizing light have blue and yellow in places without mutual overlap, and the overlap of the films appears green. When the angle of view of the different color areas of the light panel is changed.

For color management to produce periodic mechanical stretching of a single film from getcollection polypropylene (3) 25-35% and further reduced to its original size. Arrows (Fig.1) marked with the direction of the cyclic deformation of the film (3). As a result of elastic stretch and shrink film dynamically changes the color of the light panel, and the overlap of the film (3) film (4) has a change in color different from the color change area of both panels in spaces CMYK and RGB, depending on the situation and the magnitude of deformation of the inner layers and processing liquids (table 1).

Table 1
The color coordinates of the light panel from a variety of materials
No.The material of the middle layer (thickness, µm)The tensile layer, the liquidThe arrangement of the layersThe color coordinates(space)
p/pexternalmedium
1The anisotropic film getcollection polypropylene (30)80, 0, 0, 0 (CMYK)
20, 80, 0, 0 (CMYK)
330, 0, 0, 0 (CMYK)
450-0-0-0 (CMYK)
50, 0, 50, 0 (CMYK)
60, 80, 0, 0 (CMYK)
7 30, 0, 0, 0 (CMYK)
8230, 230, 255 (RGB)
9100, 0, 0,0 (CMYK)
1020, 0, 0, 0 (CMYK)
110, 0, 50, 0 (CMYK)
12Stretching - no, the processing liquid no0, 70, 0, 0 (CMYK)
1360, 0, 0, 0 (CMYK)
1480, 0, 0, 0 (CMYK)
150, 0, 40, 0 (CMYK)
160, 0, 10, 0 (CMYK)
17Film made of polyethylene terephthalate (25)0, 90, 0, 0 (CMYK)
180, 90, 0, 0 (CMYK)
1920, 0, 0, 0 (CMYK)
2075, 255, 75 (RGB)
30Film of polyvinyl chloride (75)0, 0, 30, 0 (CMYK)
3110, 0, 0, 0 (CMYK)
32 0, 0, 90, 0 (CMYK)
3330, 0, 0, 0 (CMYK)
34A film of polypropylene (50)70, 0, 0, 0 (CMYK)
3540, 0,0,0 (CMYK)
360, 90, 0, 0 (CMYK)
37100, 0, 0,0 (CMYK)
38A film of high density polyethylene0, 0, 30, 0 (CMYK)
3910, 0, 0,0 (CMYK)
400, 0, 30, 0 (CMYK)
4130, 0, 0, 0 (CMYK)
42The anisotropic film getcollection polypropylene (30)No, dimethyl phthalate0, 0, 70, 0 (CMYK)
43No, dimethyl phthalate25, 25, 255 (RGB)
44Deformation of 25%, dimethyl phthalate0, 0, 100, 0 (CMYK)
45Deformation of 35%,0, 100, 0, 0 (CMYK)
Dimethyl phthalate
46 Deformation of 25%, dimethyl phthalate0, 0, 90, 0 (CMYK)
47The anisotropic film getcollection polypropylene (50)No, cellosolve0, 0, 60, 0 (CMYK)
48No, cellosolve25, 25, 255 (RGB)
49Deformation of 35%. the ethyl cellosolve0, 80, 0, 0 (CMYK)
50The ethyl cellosolve, deformation 35%75, 255, 75 (RGB)

Examples of the preparation and color management panel light from polymers when viewed in transmitted light flux No. 2-5. On�ucaut light panel made of polymers with the ability to control color of example 1, but a film of a polymeric material, cold drawn condition made of getcollections polypropylene and before placing in the middle layer of the light panel (3) which is subjected to expansion, contraction and movement relative to the outer layers panel when a mechanical impact is pre-treated colorless transparent liquid, non-dissolving films, polarizing light, and polypropylene: n-decane, n-octanol, dimethyl phthalate and ethyl cellosolve (examples respectively). In the absence of changing the angle of view of the different color layers of the light panel changes depending on the optical properties of transparent liquids used for processing of polymers.

Example 6 obtaining and color control of the light panel from polymers when viewed in transmitted light flux. Get the light bar from polymers with the ability to control color when viewed in transmitted light flux representing a five-layer package of example 1, but the inner layers are composed of a deformable film getcollection polypropylene (3) and the two fixed films of a polymeric material, pulling in a cool state - of polyethylene terephthalate with a thickness of 25 μm (4) and (5) located between the two sheets of material, polarizing light (1) and (2) at an angle of 30, 150 I degrees to conditional polarization direction, moreover, the polarization direction of light in the outer layers the same (Fig.4). Film (3), (4) and (5) are arranged at an angle of 120 degrees relative to each other. The lower side includes a light source. Transparent anisotropic polymer films are becoming blue, pink and yellow-green in places without overlapping, turquoise color in places of overlapping films (3) and (4), purple color in areas of overlapping films (3) and (5), the orange color in places of overlapping films (4) and (5), and in the overlap area of film (3), (4) and (5) the purple color is observed. The arrows indicate the direction of the cyclic deformation of the film (3). As a result of elastic stretch and shrink film dynamically changes the color of the light panel, and the overlap of films (3), (4) and (5) there is a change in the color different from the color change area of the films without overlapping.

An example of obtaining and color control of the light panel from polymers when observed in reflected light Nos. 7, 8. Get the light bar from polymers with the ability to control color, representing a three-layer package of polymers according to example 1, but with a layer of metal foil or metalized polyethylene terephtalate (2), respectively in examples (Fig.3). The arrows indicate the direction of the cyclic deformation of the film (3). As a result of elastic stretching and sacramentality dynamically changes the color of the light panel when observed in reflected light under different angles of view.

An example of obtaining and color control of the light panel from polymers when viewed in transmitted light flux No. 9. Get the light bar from polymers with the ability to control color when observed in reflected light according to example 7, but the inner layer of a polymeric material, pulling cold - getcollection polypropylene of a thickness of 35 μm have different angles relative to the outer layers of polymers and subjected to elastic stretching of 30%. The color of the light panel is changed. The spectral characteristics of the light panel depending on the position of the middle layer and its deformation is shown in the graph (Fig.5).

An example of obtaining and color control of the light panel from polymers when viewed in transmitted light flux No. 10-12. Get the light bar from polymers with the ability to control color when observed in reflected light according to example 9, but the middle layer is treated with fluids that do not cause dissolution of the contacting polymers: dimethylformamide, ethyl cellosolve, n-octanol, nitrobenzene. The color of the light panel is changed, the color coordinates of the light panel depending on the position of the middle layer and its deformation is shown in table 1.

1. A method of producing light panel from a multilayer stack of polymer films for upravleniya in transmitted light flux, including the location between two sheets of film material, polarizing light, two anisotropic transparent and colorless films getcollection polypropylene at a right angle and implementation of periodic mechanical stretching of one of the films by 25-35% with a subsequent reduction of its original size and displacement, relative to the layers panel by mechanical action on it.

2. A method according to claim 1, characterized in that at least one film material, polarizing light, is made of mirror metallic foil or mirror metallized polymer film.

3. A method according to claim 1, characterized in that at least one film from getcollection polypropylene pre-treated colorless transparent liquid without causing the dissolution of the contacting polymers.



 

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