KR100612074B1 - Polyurethane screen and its manufacturing method. - Google Patents

Abstract

The present invention uses a polyurethane material which is a wear-resistant, tensile strength, high elasticity plastic used in a conventional bag, shoes, artificial leather, etc., but composed of a transparent material, the front and rear of the scattering surface is composed However, the construction method consists of a uniform scattering surface of 60 to 1000 mesh, a curved surface and a spherical prism of a fine unit, and an embossing surface capable of optical action such as a Fresnel lens surface, and the projector light source of a long distance by the projection distance It is characterized in that the hot spot phenomenon is eliminated, and the image on the back of the screen can be brightly transmitted and simultaneously rolled up like a roll screen, and a light diffuser, a flame retardant, a dark fuel, or the like is added to or inside the polyurethane material. To increase the resolution of the image,

As a manufacturing method, the polyurethane material screen is formed by the optical embossing forming and the manufacturing method by pressing the front, rear rollers by pressing, heating, rolling or pressing to form the optical embossing surface described above on the polyurethane surface. Polyurethane is a completely heterogeneous new polyurethane screen with excellent brightness and performance while applying engineering properties of the material to the screen as it is and a method of manufacturing the same.

screen

Description

Polyurethane screen and its manufacturing method

1A is an explanatory diagram of basic elements of a screen

1B is an explanatory diagram of hot spot phenomenon of the screen;

2 is an explanatory diagram of a transmissive structure of the present invention.

3 is an explanatory diagram of a reflective structure of the present invention;

4 is an explanatory diagram in which a transverse curved surface is formed on the surface of the present invention;

FIG. 5 is an explanatory diagram in which the configuration of FIG. 4 is wound in a roll form; FIG.

6 is an explanatory view of the effect of the configuration of FIG.

7 is an explanatory diagram in which a spherical shape is formed on the screen surface

8 is an explanatory diagram in which the screen surface is formed into a prism shape;

9 is an explanatory diagram of a state in which FIG. 7 is wound in a roll form;

10-A is an explanatory view of the side configuration of the spherical fresnel type

10-B is an explanatory front view of the spherical fresnel shape.

10-C is an explanatory diagram when the fresnel shape is wound

11 is an explanatory diagram of reflection and configuration of spherical and curved screens;

12 is an explanatory view of the reflection effect and configuration of the prism screen

13 is an explanatory view of the reflection and effect of the Fresnel screen

14 is an explanatory diagram when the screen and frame are combined with the present invention.

15 is an explanatory diagram for inserting a dark pattern of the present invention;

16 is an explanatory diagram of a manufacturing process at the time of extrusion

17 is an explanatory diagram of a hot rolling process

18 is an explanatory diagram of a large model machining process for each unit

19 is an explanatory view of a tool pressing process

Brief description of the designations for the symbols in the drawings

1. Polyurethane material 2. Front-scattering surface 2A. Surface 2B. Spherical permeation scattering surface

3A. Prism face 3B. Fresnel 4. Reflective Surface 5. Reflective Materials 6. Projector

10. Hot Spot 11. Image 12. Frame 13A. Front roller 13B. Rear roller

15. Bracket 16. Heating Base 17. Spring

The present invention relates to a construction method and a manufacturing method for implementing a heterogeneous projection screen having a completely new function by modifying the surface and the inside using a material called polyurethane.

The screen is a surface scattering screen in which the light of the image scatters from the surface,

A transmissive screen through which the light from the image is transmitted from behind,

BACKGROUND High brightness screens are known which condense and reflect light in an image.

Among these screens, conventional surface scattering screens are mainly made of PVC material, which is highly flammable to fire, has low cold resistance, making it difficult to use outdoors, and long use due to low tensile strength results in curvature of the screen itself, and poor adhesion due to high frequency. Due to the thick connection seam, it is not practical for large screens, and the screen itself has high chemical toxicity and antibacterial resistance. Therefore, a problem arises in the use of the screen as a monitor device in homes, hospitals, and closed precision processing rooms.

There is not one or two problems such as noise blocking, which is an important factor in the imaging device, preventing noise from the outside and sound reflection due to its own sound absorption.

In addition, even in the conventional transmissive screen structure, all of the materials are made of plastic materials such as acrylic, and thus have a high flammability, and there is a limit to international standards that gradually require flame retardancy.

The screen itself is made of acrylic, polycarbonate, etc., and the surface hardness is very low, so it is easy to damage the surface. There was a problem that the protective window such as glass window had to be doubled on the surface. Because of the reflection, the outside scenes are murmuring, which makes the viewing uncomfortable.

High brightness screens are concave or top, bottom or left and right banding, which eliminates hot spots despite high reflectance, resulting in high brightness images but requiring high reflectivity, resulting in very fine particle surface The surface is relatively weak, so there is a limit to use outdoors.

Conventional roll screens have the advantage of being easy to carry and store because they can be rolled up, but mainly with vinyl chloride, it is impossible to perform optical embossing such as fine and uniform diffusion surface or prism, spherical surface, curved surface and fresnel, etc.

On the other hand, conventional fixed screens made of plastic sheets such as acrylic and polycarbonate are strong in their material, so that the optical embossing process is possible, but they cannot be wound like roll screens. There was a problem that is easily damaged during cleaning.

The first object of the present invention is to form an optical embossing on the screen surface, such as optical refraction and diffusing action to increase the wear resistance while strengthening the fine optical embossing pattern while simultaneously winding like a roll-time screen To be there,

It also adds flame retardancy to the screen itself to ensure safety from fire,

Strong cold resistance makes it possible to use as an outdoor screen,

Strong tensile strength ensures flatness even after long use

Screen surface to increase scattering and transmission efficiency,

It is possible to form a large screen by minimizing the connection seam by processing such as high frequency,

It is possible to screen function in clean room such as hospital or precision factory by increasing the sound quality while increasing the sound quality by improving noise isolation and noise absorption.

The surface itself is matted to eliminate the phenomenon of external light freezing.

In order to achieve the above object, in the present invention, a polyurethane material is formed into a film and used as a screen substrate.

Such a polyurethane film material can be processed into an excellent flame retardant material because the material itself has a smooth method of adding a flame retardant, and thus it is safe to fire.

High tensile strength and cold resistance,

Noise ratio blocking and absorbing

Excellent high elasticity and high elongation of more than 500%,

It is an engineering plastic that is 2 to 5 times higher than the conventional general plastic having excellent industrial processability such as vacuum formability, thermal processability, sewing processability, and high frequency adhesion.

However, these polyurethane materials are usually used only for materials such as sneakers, bags, artificial leather, etc., but have not been otherwise used as screen materials for films.

The present invention is to propose a configuration and manufacturing method that can form a video screen with a heterogeneous and novel function by adding a surface composition by optical embossing on the surface of the polyurethane film material and a light diffusing material and a dark material therein do.

The composition of the present invention for solving the above problems is a film material filmed into a sheet or a thin film by a known manufacturing method using a polyurethane enatomy comprising an isocyanate, a polyol and a chain extender (hereinafter: polyurethane) The raw material 1) is used as the basic raw material of the present invention.

Prior to the description of the screen configuration, a method of improving the brightness of the screen by increasing the transmittance while eliminating the so-called hot spot phenomenon, which is important for the technical configuration of the screen, will be described first.

As shown in Figs. 1-A and 1-B, the phenomenon of the hot spot 10 is a shape in which the higher the transmittance of the screen, the higher the transmittance of the screen and the background is exposed as it is, and especially inside the projection lens 9 of the projector 6. The phenomenon in which the light of the high light source lamp 7 is exposed and a part of the screen is exceptionally bright as shown in FIG. 1-B is called a hot spot 10 phenomenon in the screen.

However, when the transmittance of the screen is lowered in order to eliminate the phenomenon of the hot spot 10, the transmittance of the projector 6 is also lowered, thereby lowering the brightness of the image.

Therefore, in the present invention, a technical configuration of increasing the brightness of the screen by increasing the transmittance while eliminating the phenomenon of the hot spot 10 is intended.

This method suppresses the transmittance of the light source of the projector 6 at a long distance. The screen image formed on the back-scattering scattering surface 3, i.e., directly behind the screen, transmits as much as possible to increase the brightness, and at the same time the surface of the screen at the viewer position. The front transmissive scattering surface 2 can be made by the method which suppresses external light reflection, ie, forms it as a matte surface.

To solve the above problems

Film the polyurethane material 1 as shown in Figure 2, but the material itself is transparent film to transmit light.

The front transparent scattering surface 2 is formed on the front surface and the rear transparent scattering surface 3 is formed on the front surface of the polyurethane material 1.

The scattering particle size of the front and rear transmissive scattering surface (2.3) of the polyurethane material (1) is not limited, but 60 mesh-1000 mesh seams, but the polyurethane material (1) film by embossing for the purpose of uniform optical diffusion According to the thickness of the front and back transmission scattering surface (2, 3) is configured to be different or the same, but the scattering particles without the phenomenon of hot spot 10 of the transmitted image.

The thickness of the polyurethane material 1 is also not limited, but may be adjusted to 5 µm to 20 mm depending on the purpose and surface formation of the screen, but within a thickness that can be wound in a roll form.

In the present invention, the surface scattering particle diagrams of the front transparent scattering surface 2 and the rear transparent scattering surface 3 of the screen front side are technically constituted in constructing the transparent screen as shown in FIG. 2.

That is, the phenomenon of the hot spot 10 caused by the light source of the projector 6 located at a distance by the polyurethane film 1 is eliminated, and the image of the projector 6 incident on the back surface of the polyurethane film 1 is transmitted as much as possible. Try to increase the brightness.

In other words, the proximity image within the screen thickness of 20mm, which is formed on the surface of the screen back, that is, the rear surface 2 itself, is transmitted, and the light source of the projector 6 located at a distance by more than 1 m is scattered.

This method is determined by the following examples by forming the surface of scattering particles and optical embossing on one surface of the front and rear surfaces of the screen.

Example 1

As shown in FIG. 2, the scattering particle diagram of one of the front transparent scattering surface 2 and the rear transparent scattering surface 3 of the polyurethane film 1 formed of a transparent material is formed between 60 mesh and 1000 mesh.
In more detail, the scattering particle diagram is a uniform roughness as an accuracy indicating the roughness of the scattering surface.
In other words, the incident light is scattered and refracted uniformly by the uniform roughness formed on the screen surface. If the scattering particle size is not uniform, the image quality is not uniform.

As a result of the actual experiment, the light transmittance of less than 60 mesh is not only low but also the grain of the image is rough.

In addition, when 1000 mesh or more, the transmittance becomes high, and the hot spot 10 phenomenon by the light source of the projector 6 occurs.

In the case of 600 mesh or more, proper hot spot 10 erasing effect should be formed on both sides of the front and rear transparent scattering surfaces 2 and 3.

In the case of hard glass, such as glass is less than 800 mesh is appropriate, but the elasticity and elasticity of the polyurethane material itself of high elongation rate of 500 to 700% compared to the plastic as in the present invention, the coverage is relatively low up to the particle size up to 80 mesh.

Example 2

As shown in FIG. 4, the screen back surface 3 of the transparent polyurethane film 1 is composed of 180 to 200 meshes within 60 to 1000 meshes.

Although the front pitch scattering surface 2 is not limited to the pitch pitch A in the vertical direction in accordance with the screen size, optical embossing in the form of a curved surface 2A or a spherical surface 2B as shown in FIG. embossing).

As shown in FIG. 5, the rotary rod 2C may be wound in the form of a roll according to the rotation of the rotary rod 2C.

This invention,

As shown in FIG. 6, light incident on the back-transmissive scattering surface 3 of the transparent polyurethane 1 is scattered in the particle diagram of the surface thereof to form an image.

At this time, the image is enlarged and scattered by the dot pitch (A) interval by the curved surface (2A) of the front transparent scattering surface (2).

That is, the phenomenon of the hot spot 10 caused by the light source of the projector 6 is scattered and erased by the particle size of the rear transparent scattering surface 3, and the image formed on the rear transparent scattering surface 3 is the front transparent scattering surface 2. Since the light is condensed by the curved surface 2A and the spherical surface 2B of FIG.

Example 3

As shown in Fig. 8, the scattering surface is suitably formed within 180 to 200 mesh within 60 to 1000 mesh with the polyurethane permeable back surface 3 and the back-transmissive scattering surface 3, and as the front-permeable scattering surface 2 as Fig. 5- Although not limited as in B, optical embossing is formed in the form of a triangular prism 3A at intervals of 0.1 to 3 mm.

The present invention removes the hot spot 10 phenomenon from the scattering surface of the back-scattering surface 3 as shown in FIG. 8, and the front-scattering surface 2 refracts the transmission direction at the prism 3A). And viewing direction can be adjusted.

In addition, although the wear resistance of the screen prism surface 3A is good and the optical embossing which acts optically on the screen surface is formed, it can be wound up by the rotating rod 2C like a roll screen like FIG.

Example 4

As shown in Fig. 10-A, the back-scattering surface 3 forms an appropriate scattering surface within 60 to 1000 mesh, but as the front-side scattering surface 2, Figs. 7-A and 7-B and a simple fresnel (3B) Optical embossing of the lens pattern can be formed.

This configuration raises the particle size of the scattering surface of the back-transmissive scattering surface 3 by 800 mesh or more to increase the transmittance.

The phenomenon of hot spot 10 caused by the increased transmittance is that the projector that refracts at the focal position F when the projector 6 is positioned at the focal length F of the lens of the Fresnel 3B on the front of the screen ( Since the light source of 6) transmits straight as shown in Fig. 10-D, the phenomenon of hot spot 10 is eliminated.

In addition, high transmittance increases the brightness proportionally, allowing a very bright image to be viewed without a hot spot 10.

In particular, the fresnel 3B screen can be wound like a roll screen by the rotating rod 2C as shown in Fig. 10-C.

Example 5

The light diffusion element such as silica, glass beads, titanium dioxide, etc. may be added to the polyurethane material 1 itself or applied to one surface thereof.

The smelting rate at this time is not limited, but the optical embossing or particles of the screen surface are also added or reduced depending on the weight ratio between 500 ppm and 200,000 ppm.

Example 6

A suitable amount of dark dyes and pigments, such as black, may be mixed inside or on the surface of the polyurethane material (1) to enhance the contrast effect of the image, or the front and rear permeation scattering surface (2, Dark grooves 21 may be formed on one surface or both surfaces of 3) at regular intervals to constitute a dark layer, and may be wound like a roll screen by a rotating rod 2C as shown in FIG. 15-A.

The amount of dye or the like added varies depending on the darkness of the desired dark color.

Example 7

As shown in FIG. 3, when the reflective surface 4 is combined by laminating a reflective substrate 5 such as aluminum deposition or a mirror on the back surface of the present invention as shown in FIG. 2, examples of the above-described transmission screen 1,2,3 All of the embodiments of the present invention, including 4, 5, 6, can be switched to the function of the reflective screen.

That is, as shown in Fig. 11, the particle size of the front transparent scattering surface 2 is set to 60 to 1,000 mesh, and the reflective surface 4 is formed on the screen rear transparent scattering surface 3, or Examples 2, 3, and 4 of the above embodiment. It is possible to simultaneously configure the optical embossing on the surface.

In this case, as shown in FIG. 11, the light incident by the curved surface C by the dot pitch A of the front transparent scattering surface 2 is reflected by the reflective surface 4, and at the same time, the particles formed on the front transparent scattering surface 2 are also formed. The hot spot phenomenon of the projector 6 is eliminated by this.

In addition, as shown in FIG. 12, an image incident at a high projection angle at a short projection distance, or a light source incident by being deflected from the left and right sides or an image projecting from the left and right corners in a square direction, has a prism (3) of the front transmissive surface 2. Since the refraction reflects from the plane and the reflection surface 4, the projection angle incident at a high projection angle can be refracted to the viewer's position.

The fossil distance 3B lens and the projection distance of the projector 6 are configured to have the same distance by the fresnel 3B lens formed on the front transparent scattering surface 2 as shown in FIG. In this case, since the light incident on the lens surface of the Fresnel 3B reflects straight from the reflection surface 4, the image having high luminance can be viewed without a hot spot 10 phenomenon.

In addition, any reflective screen having the function of optical embossing can be wound like a roll screen.

Example 8

In the present invention, as shown in FIG. 14, the transmissive screen or the reflective screen is composed of a frame 12 around the screen, and when the upper, lower, left, and right sides are connected by the connector 12A, it is always used as a good flat screen structure. Frame 12 is easy to carry because the frame 12 can be rolled around the screen of the present invention in a prefabricated form.

Example 9

In addition, the screen of the present invention can be produced as a flame retardant screen that can be flame retardant in the case of fire by mixing an appropriate amount of a known flame retardant in the manufacturing process,

It is possible to produce a screen with high contrast ratio by mixing black polycarbonate black pigment or dye on one of the front and rear permeation scattering surfaces (2,3) or the screen material itself.

Example 10

Optical embossing of the surface of the polyurethane material (1) is because the incident image is diffused in its own dot pitch unit (A), it is not necessary to form a particle of a separate transmission scattering surface.

Examples 1, 2, 3, and 4 of the above-described embodiments have the same effect even if the configuration of the front transparent scattering surface 2 and the rear transparent scattering surface 3 are interchanged.

The greatest feature of the present invention is that the characteristics of polyurethane, that is, high tensile strength, high elastic resilience, high elongation of more than 500%, abrasion resistance, cold resistance, flame retardancy, antibacterial property, noise barrier property, noise absorption property, The engineering plastics, which have the characteristics of vacuum formability, thermal processability, high frequency adhesion, and sewing process, are screened with screen material, and feature a completely different screen.

In other words, conventional screens are mainly composed of vinyl chloride such as PVC, and the main material, so when the screen is large due to its weak tensile strength, the screen itself is impaired in its flatness with time, and the screen crys and there is no resilience. Weak to impact, especially the wear resistance of the surface was weak when the surface was changed significantly.

However, the screen according to the present invention has a strong wear resistance as it is a characteristic of the polyurethane, there is no change in the surface of the screen and excellent cold resistance can be used as an outdoor screen.

Because of its excellent anti-bacterial properties, it is suitable as an image screen in a sterile laboratory, an image monitor screen in a clean room such as a semiconductor factory, and an image screen in a hospital.

Such a screen can be easily mixed with a liquid flame retardant such as TCPP or TCEP in a manufacturing process, and thus easy to manufacture a flame retardant screen.

Since the screen is installed from the floor to the ceiling from the wall surface, the screen of the conventional PVC material is very dangerous in the fire, the present invention is excellent as a flame retardant screen.

Since the present invention has a high elasticity excellent in elongation and rebound elasticity of more than 500% of the polyurethane properties, as shown in Figure 14, when used in conjunction with the frame 12 to pull around the screen of the present invention is always excellent in flatness without wrinkles It has a feature that can be used as a video screen, and can be rolled and rolled when moving.

These polyurethanes are excellent in noise blocking and absorbing properties, and when the scattering surfaces of the front and rear surfaces are properly configured, the double-sided screen having the characteristics of the urethane can be used.

Therefore, it is suitable as a screen for the video background of the stage because it has excellent blocking and absorbing property in the large screen itself in a movie room or theater.

In addition, the front transmissive scattering surface 2, which is the surface of the screen based on the viewer's direction, forms an image on the back surface of the polyurethane material 1 by optical embossing such as 60 to 1000 mesh scattering surface, spherical and curved prism, and Fresnel. Since the light is magnified and enlarged, the transmission image of the black carbon and the black pigment and dye as well as the brightness is more than two times the contrast is also more than two times higher the sharpness is also more than two times higher. In addition, since the screen surface of the optical embossing does not blur the background of the viewer position, the sharp image effect is increased.

In particular, such a polyurethane screen has excellent heat resilience and excellent high elasticity, so that the curved surface 2A of FIG. 4 and the spherical surface 2B of FIG. One of the greatest features is that the optical embossing can be formed on the prism face 3A of FIG. 8 and the lens face 3B of FIG. 10, and the screen can be wound like a roll.

In other words, optical embossing forms such as the front and rear transmissive scattering surfaces (2, 3), curved surfaces (2A), spherical surfaces (2B), prismatic surfaces (3A), and fresnel (3B) lens surfaces of the conventional precision and uniform particle sizes. Since is very fine and precise form, it was possible to process only in a rigid plastic sheet plate all conventionally.

Therefore, such a conventional hard plastic material cannot be wound like a roll.

The present invention can precisely form the optical embossing component requiring the necessary optical action on the screen surface by using high thermal workability and excellent high elasticity and abrasion resistance, as well as can be smoothly wound by itself so that the curved surface in the form of a roll Or spherical screens, roll-shaped fine prism surface screens, roll-shaped fresnel screens.

[Description of Manufacturing Method]

The following relates to a manufacturing method that can achieve the object of the above-described configuration method.

Sheet or film manufacturing method for producing such a screen is known, but mainly as a processing method of the sheet that can be used as a material such as bags, shoes, artificial leather, etc. It was not suitable as a production method for the screen for projection.                     

Fig. 16 is a known manufacturing process for dissolving a polyurethane chip and heating it to produce a film or sheet.

The present production method is thus expressed and can simultaneously form the front and rear transparent scattering surfaces 2, 3 of the screen substrate by rolle in a semi-molten state.

For example, among the rollers, the front roller 13A is a roller having a polishing surface of 60 mesh-1000 mesh, and the rear roller 13B is optically embossed with FIG. 3-A, 4-A, or 5-A. The shape is rolled by imprinting the shape in the form opposite to the rear roller 13B itself.

In this case, the front surface is a polished surface of 60 to 1000 #, and the rear surface of the screen can form an optical embossing surface in the form of each curved surface 2A, spherical surface 2B, or prism surface 3A.

The polyurethane film completely formed by the sheet itself is formed by heating the front and rear rollers 13A and 13B with a heating device as shown in FIG. 17 or by separately heating the sheet itself and rolling by the front and rear rollers 13A and 13B. can do.

Since the fresnel-type screen as shown in FIG. 10 is a pattern of the entire screen, in which the fresnel 3B pattern formation is not a duplicate of the same grain, the pattern of the entire screen specification must be formed on one circular surface. As shown in Fig. 18, the front roller 13A can be formed of the entire fresnel shape on the entire curved surface of the front roller 13A, and the rear roller 13B can be constituted by the rear roller formed of a polishing surface of 60 to 1000 #.

The optical embossed or polished surface in the form of the fresnel 3B in FIG. 10 or the prism face 3A in FIG. 8 or the curved surface 2A in FIG. 4 and the spherical surface 2B in FIG. As shown in 19, the upper bracket 15 is formed to form a pattern on the front surface of the screen 2, and at the bottom, a sheet of polyurethane material 1 placed on the heating device 16 is placed, and the upper bracket 15 ) And a screen in the form of buffering the spring 17 can be heated.

[Effects of Manufacturing Method]

In this manufacturing method, as shown in FIG. 16, the front and rear permeation scattering surfaces 2 and 3 of the screen surface are simultaneously processed while simultaneously molding the polyurethane material heated and discharged with the front and rear rollers.

Fig. 17 is a method in which an arbitrary screen surface can be processed to the front and the rear while heating the flat sheet of the polyurethane material 1 already processed into a sheet.

As shown in Fig. 19, the surface of the polyurea carbon material 1 in the semi-melt state is press-molded by the upper metal fitting 15 at the upper end by a heating device.

Therefore, the shape of the screen of the present invention as described above and the manufacturing method of the present invention as described above is capable of converting a polyurethane material, which was conventionally used only as a material such as a bag or shoe material, into a heterogeneous and new function projection screen. will be.

Therefore, the present invention is a screen having excellent flatness due to excellent high elasticity, wear resistance, cold resistance and excellent flame retardant screen,

It is a screen of an optical embossing surface having a uniform scattering surface, a curved surface, and a prism and fresnel lens shape, and a roll-wound screen. The image that is erased and formed on the back of the screen itself is a transmissive screen, while having an engineering characteristic, an image screen having more than twice the brightness and clarity compared to the conventional one is possible.

Claims (9)

In the projection screen, The film or sheeted polyurethane material (1) as the base material of the screen The polyurethane material (1) is made of a transparent material that can transmit light, Before and after the polyurethane material (1) to form a front and rear transmission scattering surface (2, 3) respectively The front and rear transmission scattering surface (2, 3) of the configuration method is to form an optical embossing by the fine scattering particles of 60 mesh-1000 mesh, Polyurethane screen characterized by eliminating the phenomenon of hot spot 10 caused by the light source of the remote projector 6 and effectively transmitting the image formed on the back surface of the screen material The method of claim 1, Polyurethane screen, characterized in that the light diffusion material such as silica, glass beads, etc. added to one of the inside of the polyurethane material (1) or the front and rear transmission scattering surface (2, 3) of the screen delete The method of claim 1 Polyurethane screen characterized in that the screen formed on the surface of the optical embossing by the fine scattering particle diagram of claim 1 can be wound like a roll The method of claim 1, Polyurethane screen characterized by winding like a roll on a screen having an optical embossed surface on the surface of the polyurethane material 1, which has an enlarged action such as a fine curved surface 2A or spherical surface 2B. The method of claim 1 Polyurethane screen, which is characterized by being able to wind up a screen having a fine prism surface 3A formed on the surface of a polyurethane material as a roll The method of claim 1, Polyurethane screen characterized by being able to wind up a screen having a fresnel (3B) shape on the surface of a polyurethane material (1) like a roll The method for producing the polyurethane material (1) screen according to claim 1, wherein the front and back transmission scattering surfaces (2, 3) are rolled by the front and rear roller surfaces (13A, 13B) before and after forming an optical embossing grain. Method of producing a polyurethane screen characterized in that The method for producing a polyurethane screen (1) according to claim 1, wherein the polyurethane screen (1) is manufactured by heating and pressing with a bracket (15) having optical embossing.

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