KR20170135405A - Plastic screen and method of manufacturing the same - Google Patents

Plastic screen and method of manufacturing the same Download PDF

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Publication number
KR20170135405A
KR20170135405A KR1020160067273A KR20160067273A KR20170135405A KR 20170135405 A KR20170135405 A KR 20170135405A KR 1020160067273 A KR1020160067273 A KR 1020160067273A KR 20160067273 A KR20160067273 A KR 20160067273A KR 20170135405 A KR20170135405 A KR 20170135405A
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KR
South Korea
Prior art keywords
screen
weight
parts
flame retardant
resin
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KR1020160067273A
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Korean (ko)
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심우경
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심우경
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Priority to KR1020160067273A priority Critical patent/KR20170135405A/en
Publication of KR20170135405A publication Critical patent/KR20170135405A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/18—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets by squeezing between surfaces, e.g. rollers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3475—Displays, monitors, TV-sets, computer screens

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

The present invention relates to a plastic screen of a large-sized imaging apparatus which is installed in front of people in a place where a plurality of people such as a karaoke room, a movie theater, a PC room, a game room, And a screen layer provided on the base layer, the method comprising the steps of: (a) mixing a pigment, a flame retardant, an antistatic agent, a UV stabilizer and a resin for the screen layer and extruding the mixture into a pellet (B) preparing a resin for the base layer; (c) preparing a screen film by multiple extrusion molding of the resin of the step (a) and the resin of the step (b); (d) Comprising the steps of: stretching the film produced in step (c) longitudinally and transversely, wherein steps (c) and (d) Foreign substances such as alcohol, food buteodo can easily be made available, such as clean water.

Description

Plastic screen and method of manufacturing same

The present invention relates to a plastic screen and a method of manufacturing the same. More particularly, the present invention relates to a plastic screen and a method of manufacturing the plastic screen and a method of manufacturing the same. To a plastic screen of a device and a method of manufacturing the same.

In recent years, there has been a growing interest in advertisements that generate advertising images at a low cost in a limited space other than advertisements using media such as television or radio for advertisement or publicity. For example, a large-scale store or an advertisement display device such as a liquid crystal display (LCD), a projection TV, and a light emitting display (LED) is installed at a high density of a population or the like, It is playing. However, such a commercial image display device is not only expensive, but also has a problem that it is difficult to install the display device without auxiliary devices due to the low efficiency of the advertisement due to the limitation of the screen size and the heat generated by the weight and the device itself. Accordingly, a method of forming a projection screen in the form of a sheet and reproducing the advertisement contents on the screen has been expanded. That is, in order to sharpen an image projected by an optical image formed on a light source lamp having a pixel display section arranged in a matrix, such as an LCD (liquid crystal) projector or a DMD (Digital Micro mirror Device) projector, Surface screens that are imaged are being developed.

However, since the surface of the screen is too high, a blind spot where the writing contents can not be seen easily occurs, and there is a problem that the eyes are easily fatigued, so improvement has been demanded. Generally, when a plastic screen is applied, a method of lowering the surface reflectance by forming fine irregularities on the surface of the glass substrate is an acid etching method in which the glass surface is corroded with an acid etching solution such as hydrofluoric acid, (SiO 2 ) having a refractive index of about 1.5 and a titanium dioxide (SiO 2 ) having a refractive index of 2.2 or more (for example, a glass having a refractive index higher than that of glass) TiO 2 ) and the like are successively laminated on the substrate. The matte glass substrate manufactured by the above method may be used as a glass board, but is often used as a screen of a projection apparatus such as a beam projector.

On the other hand, the screen made of synthetic resin is a diffusive screen in the form of a roll screen made of PVC or plastic material such as vinyl chloride, can not provide high image quality at a low 700 to 3,500 ANSI lumen, There is a problem that it can not be used in a place where it can be touched. The function as a screen is to eliminate the hot spot phenomenon of the screen, to make the brightness of the entire screen uniform, to secure the left and right viewing angles, and to eliminate the sparkling speckle phenomenon on the screen surface itself High-resolution and high-quality images must be obtained, and a video screen having a stable screen on the screen, such as distortion of an image due to viewing angle deviation, should be provided.

One example of such a technique is disclosed in Patent Documents 1 to 3 below.

For example, Patent Document 1 discloses that in a diffusion film in a flat screen for a film of a plastic composition, a transparent plastic material is composed of 90 to 99.95% by weight, and an average particle diameter of 1 to 100 탆 and a difference in optical density From 0.01 to 10% by weight of transparent polymer particles of from +/- 0.003 to 0.25 units, wherein the plastic composition comprises a plastic composition comprising, after the thermoplastic process, 500 ppm or less of transparent polymer particles having an average particle diameter of 80 to 200 nm .

In Patent Document 2, 75 to 97 parts by weight of a low melting point glass powder having a melting temperature of 480 to 600 DEG C, 3 to 25 parts by weight of a high melting point glass powder or a fine glass sphere having a melting temperature of 580 to 740 DEG C, 10 to 40 parts by weight of the frit composition to prepare a frit composition; applying the frit composition to a surface of the glass substrate to a thickness of 10 to 40 탆; heating the glass substrate to a temperature between the high melting point and the low melting point And heat-treating the substrate at a temperature.

In Patent Document 3, 3 to 25 parts by weight of anisotropic ceramic particles which exhibit optically anisotropy and an average particle size of 1 to 25 mu m are mixed with 100 parts by weight of a low melting point glass powder having a softening point of 340 to 560 DEG C and a vehicle 10 (B) forming an anisotropic coating layer having a thickness of 10 to 100 mu m by applying the coating paste on a glass or metal substrate and drying the coating paste; (B) (C) heating the substrate at a temperature of 620 to 720 캜; and (D) polishing the surface of the substrate of the step (C) to have an anisotropic coating layer-coated surface with a gloss of 5 to 17 A method of manufacturing a matte plate for both a screen and a blackboard is disclosed.

Korean Registered Patent No. 10-1360726 (Registered on Mar. 02, 2013) Korean Registered Patent No. 10-0751444 (registered on Aug. 16, 2007) Korean Registered Patent No. 10-1164859 (registered July 5, 2012)

However, in the conventional technology as described above, since the surface is composed of the scattering surface and the back surface is composed of the reflection surface due to the characteristics of the material, the sharpness of the image is deteriorated due to the interference of the image due to the scattering surface of the surface, And the image retaining material adhering to the surface is evaporated with time, which makes it difficult to use for a long period of time.

In addition, the conventional screen as described above has a structure in which a limited number of personnel such as academies and government offices are used. When a person touches or touches the screen surface by using any number of people, the screen itself is collapsed or damaged, and foreign matter There was also a problem that the water cleaning could not be performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plastic screen and a method of manufacturing the same which can improve the visibility of image contents by reducing light reflection when a screen of a beam projector is used.

Another object of the present invention is to provide a plastic screen and a method of manufacturing the same, which are capable of preventing the generation of toxic gas during a fire and having a fire-blocking function.

Another object of the present invention is to provide a plastic screen capable of cleaning a screen surface by a water hose or the like in a state of being installed, having high strength of the screen surface, and being resistant to moisture and corrosion resistance, and a method of manufacturing the same.

Another object of the present invention is to provide a plastic screen which can easily realize a flat screen, a curved screen, a spherical screen and the like, and can maintain a long-time shape, and a manufacturing method thereof.

According to an aspect of the present invention, there is provided a method of manufacturing a plastic screen comprising a base layer and a screen layer provided on the base layer, the method comprising the steps of: (a) (B) preparing a resin for the base layer; (c) mixing the pellet of the step (a) and the pellet of the step (b) to form a pellet; (D) stretching the film produced in step (c) longitudinally and transversely, wherein steps (c) and (d) are performed by a matte roller Is executed.

In the screen manufacturing method according to the present invention, the resin in the steps (a) and (b) may be any one of polypropylene (PP), polyethylene (PE), urethane and thermoplastic urethane (TPU) .

Further, in the screen manufacturing method according to the present invention, the pigment includes titanium dioxide, zinc stearate (Zn-St) as a stabilizer, and plastic additive (N, N'-Ethylenebisstearamide) as a dispersant, and the flame retardant is a decarbodiment ), Antimony trioxide (Sb 2 O 3 ), a plastic additive (N, N'-Ethylenebisstearamide) as a dispersant, and a phenolic antioxidant (Pentaerythritol tetrakis).

Further, in the screen manufacturing method according to the present invention, the screen layer may further comprise 5.9 to 17.7 parts by weight of the pigment, 15.6 to 23.4 parts by weight of the flame retardant, 0.1 to 5 parts by weight of the antistatic agent, 0.1 to 5 parts by weight of the UV stabilizer, and 48.9 to 78.3 parts by weight of the flame retardant resin.

Further, in the screen manufacturing method according to the present invention, the pigment comprises 4.5 to 13.5 parts by weight of titanium dioxide, 0.3 to 0.9 parts by weight of zinc stearate (Zn-St), 1.1 parts by weight of plastic additive By weight to 3.3 parts by weight.

Further, in the screen manufacturing method according to the present invention, the flame retardant is added in an amount of 10.22 parts by weight to 15.33 parts by weight of a brominated flame retardant, 2.78 parts by weight to 4.17 parts by weight of antimony trioxide (Sb 2 O 3 ) By weight to 2.88 parts by weight, and 0.68 part by weight to 1.02 part by weight of the phenolic antioxidant.

In order to achieve the above object, the screen according to the present invention is characterized in that it is made by the above-mentioned screen manufacturing method.

In the screen according to the present invention, the thickness of the screen is 0.4 to 2.5 mm.

In the screen according to the present invention, the screen layer and the base layer are extruded in a thickness ratio of 3: 7.

In the screen according to the present invention, a grid pattern is formed on the back surface of the base layer.

As described above, according to the plastic screen and the method of manufacturing the same according to the present invention, since the screen is made of a plastic material, a plurality of people are used arbitrarily to illuminate a high-quality image even if a surface of the screen is scratched or touched, There is no great difficulty, and a small scratch can be easily repaired.

In addition, according to the plastic screen and the method of manufacturing the same according to the present invention, it is possible to easily clean the water even with foreign matter such as alcohol, food, etc., and to easily realize a flat screen, a curved screen, a spherical screen, Can be maintained.

1 is a sectional view of an example of a plastic screen according to the present invention,
2 is a process diagram for explaining a manufacturing process of a plastic screen according to the present invention;

These and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

The term 'screen layer' used in the present invention refers to a surface of a screen manufactured according to the present invention, in which an optical image formed on a light source lamp displays a projected image, Layer 'is a layer provided to support the screen layer, and may be formed of a first base layer or a second base layer.

Accordingly, the screen according to the present invention is provided in multiple layers by double extrusion or triple extrusion in the extrusion step using an extruder. To this end, the extruder has two or three extruders. However, the present invention is not limited to this, and when the thickness of the screen is reduced, the base layer may be omitted and the single layer extrusion may be performed.

Although the size of the screen according to the present invention is not limited, it is usually a very large size of 150 '(2m × 3m) to 400' (6m × 8m), so it is made as light as possible, It is possible to prevent damage even if it is frequently hit, and it is possible to clean the water easily even if foreign substance such as alcohol or food is attached.

In addition, when the screen of the present invention is installed as a large-sized facility of 150 'to 400', since the construction itself for attaching and installing the screen is a large size, it can not be arbitrarily separated and assembled once installed. It can be cleaned, the surface of the screen is made stronger, and it is resistant to humidity and strongly resistant to corrosion.

Also, in order to enhance the sharpness of the image, a reflective screen structure in which images are directly reflected from the surface is provided so that images are reflected and formed directly on the surface itself without a separate coating or scattering surface to obtain high quality images.

The above-mentioned basic requirements are satisfied, and the non-flammability, corrosion resistance and surface reflectivity are exhibited. At the same time, the natural function of the projected image, which is a basic function of the screen, the removal of the hot spot phenomenon to uniformize the brightness of the screen screen, And an in-speckle removal function at the same time.

Further, according to the present invention, it is possible to acquire as high a brightness as possible at the same time while ensuring the stability of the screen without distorting the screen even at right and left viewing angles, and to obtain high quality and high resolution images by directly imaging the screen on the screen surface without transmitting foreign matter A surface reflection screen of a non-ferrous material having an oxidized surface formed on its surface is provided.

That is, since the screen according to the present invention is a plastic screen, it is not difficult to illuminate a high-quality image even if the surface of the screen is scratched by touching or bumping the surface of the screen by using multiple people at random, and small scratches can be easily repaired . In addition, it is possible to easily clean the water even with foreign substances such as alcohol and food, and it is possible to easily realize flat screen, curved screen, spherical screen, etc. and can maintain its shape for a long time.

Hereinafter, a manufacturing process of a screen according to the present invention will be described with reference to FIGS. 1 and 2. FIG.

FIG. 1 is a sectional view of an example of a plastic screen according to the present invention, and FIG. 2 is a process diagram illustrating a manufacturing process of a plastic screen according to the present invention.

As shown in FIG. 1, a plastic screen according to the present invention comprises a base layer 10 and a screen layer 20 provided on the base layer 10.

In FIG. 1, the base layer 10 has a single layer structure. However, the present invention is not limited thereto.

The base layer 10 may be made of any one of polypropylene (PP), polyethylene (PE), urethane, and thermoplastic urethane (TPU) or a mixture thereof.

The screen layer 20 includes a pigment for clearly viewing a screen projected on a screen, a flame retardant for preventing the generation of toxic gas in the event of fire, an antistatic agent for preventing static electricity, a UV stabilizer for preventing discoloration during long- And may be prepared using a pellet formed by mixing and extruding.

The screen layer 20 according to the present invention comprises 5.9 to 17.7 parts by weight of the pigment, 15.6 to 23.4 parts by weight of the flame retardant, 0.1 to 5 parts by weight of the antistatic agent, 100 parts by weight of the UV 0.1 to 5 parts by weight of a stabilizer, and 48.9 to 78.3 parts by weight of a flame retardant resin.

The antistatic agent includes 0.1 to 5 parts by weight based on 100 parts by weight of the screen layer. When the antistatic agent is less than 0.1 part by weight, the antistatic effect does not appear on the screen. When the antistatic agent is more than 5 parts by weight, the production cost of the screen increases because the price is high. The UV stabilizer preferably includes 0.1 to 5 parts by weight per 100 parts by weight of the screen layer. When the amount of the UV stabilizer is less than 0.1 parts by weight, the effect of preventing color change during long-term use is not exhibited. If the amount is more than 5 parts by weight, the cost of the UV stabilizer is high.

The pigment contained 4.5 parts by weight to 13.5 parts by weight of titanium dioxide, 0.3 part by weight to 0.9 part by weight of zinc stearate (Zn-St) as a stabilizer, a plastic additive (N, N'- 1.1 parts by weight to 3.3 parts by weight of ethylenebisstearamide.

When the amount of the titanium dioxide is less than 4.5 parts by weight, there is a problem that the screen is not visible and blurred. When the amount is more than 13.5 parts by weight, molding of the product is difficult or excessive, resulting in breakage of the finished screen.

If the amount of the stabilizer is less than 0.3 part by weight, the titanium dioxide component may not be dispersed (unmixed) well and the quality may become uneven. If the stabilizer is more than 0.9 part by weight, do.

In addition, when the amount of the plastic additive is less than 1.1 parts by weight, the titanium dioxide-based components are not dispersed (unmixed) and the quality becomes uneven. When the amount is more than 3.3 parts by weight, There is a problem of rising.

As described above, by including titanium dioxide, zinc stearate (Zn-St) and a plastic additive in the pigment according to the present invention, it is possible to realize a high definition image quality of HD grade at 500 to 3,500 ANSI lumens , It is possible to realize a clear natural color without causing a hot spot phenomenon even when it is 4,500 ANSI lumens or more. In addition, it is possible to realize more than 3 gains, so you can show details such as dropping of water droplets, spreading of water in water, and human eyebrows. It does not feel dizziness even if you look at the screen for a long time, and the left and right viewing angles are large so that you can see the screen clearly and without looking at the 180 degree view.

The flame retardant is composed of 10.22 parts by weight to 15.33 parts by weight of a brominated flame retardant (Decabromodphenyl), 2.78 parts by weight to 4.17 parts by weight of antimony trioxide (Sb 2 O 3 ), 100 parts by weight of a plastic additive (N, N ' 1.92 parts by weight to 2.88 parts by weight of ethylenebisstearamide, and 0.68 to 1.02 parts by weight of a phenolic antioxidant (Pentaerythritol tetrakis). As a result, it is possible to provide an eco-friendly material exhibiting flame retardant grade 0.

When the brominated flame retardant is less than 10.22 parts by weight, the flame retardant effect does not appear properly on the screen. If the brominated flame retardant is more than 15.33 parts by weight, molding of the product may be difficult or excessively strong. If the antimony trioxide is less than 2.78 parts by weight, the flame retardant effect is not exhibited. If the antimony trioxide exceeds 4.17 parts by weight, the molding of the product may be difficult or excessively strong. When the amount of the plastic additive is less than 1.92 parts by weight, the components of the brominated flame retardant and antimony trioxide are poorly dispersed and the quality becomes uneven. When the amount exceeds 2.88 parts by weight, the plastic additive is expensive, there is a problem. On the other hand, when the amount of the phenolic antioxidant is less than 0.68 part by weight, the components of the brominated flame retardant and antimony trioxide are not dispersed well and the quality becomes uneven. When the amount of the antioxidant is more than 1.02 parts by weight, There is a problem.

Next, a manufacturing process of the screen as shown in Fig. 1 will be described with reference to Fig.

2, a pigment, a flame retardant, an antistatic agent, a UV stabilizer, and a resin are prepared for the screen layer 20 (S10).

Wherein the flame retardant is selected from the group consisting of a brominated flame retardant (decabromodphenyl), antimony trioxide (Sb 2 O 3 ), a plastic additive as a dispersant, and a phenol-based antioxidant as a dispersant Antioxidants (Pentaerythritol tetrakis). The flame retardant may include a brominated flame retardant (Decabromodphenyl), antimony trioxide (Sb 2 O 3 ), a plastic additive (N, N'-Ethylenebisstearamide) and a phenol-based antioxidant (Pentaerythritol tetrakis) as a dispersant. The resin may be any one of polypropylene (PP), polyethylene (PE), urethane, and thermoplastic urethane (TPU) or a mixture thereof.

Subsequently, the pigment, the flame retardant, the antistatic agent, the UV stabilizer, and the resin prepared in the step S10 are put into a container, stirred and mixed, and extruded into pellets by applying a conventional method of forming a pellet (S20).

Apart from the step S20, a flame-retardant resin is prepared as the base layer 10 (S30).

As the flame retardant resin, any one of polypropylene (PP), polyethylene (PE), urethane, and thermoplastic urethane (TPU), or at least two of them may be mixed.

Next, the pellet of the step S20 and the resin of the step S30 are multi-extruded to produce a film for a screen (S40). The screen film according to the present invention is extruded so that the thickness ratio of the screen layer 20 and the base layer 10 is 3: 7.

The above-mentioned production of the film is performed by simultaneously extruding the base layer 10 and the screen layer 20 through an extruder while the two layers 10 and 20 are combined in the extrusion die. The extrusion temperature may be varied depending on the screen raw material to be produced according to the present invention. For example, the extrusion temperature may be in the range of 140 to 320 ° C, but is not limited thereto. I.e., the amount of the screen layer 20 and the base layer 10 that are extruded to produce the screen, and the extrusion speed.

In the above description, the screen is composed of one base layer 10 and the screen layer 20, but the present invention is not limited thereto. In the case where the base layer 20 has a two-layer structure, It can also be executed. In the case where the base layer 10 has a two-layer structure, the base layers are made of the same material, for example, the first base layer and the second base layer of the base layer are made of polypropylene (PP) and polypropylene (TPU) and a thermoplastic urethane (TPU) layer made of a polyethylene (PE) and a polyethylene (PE) layer and a urethane and a urethane layer in a thickness different from that of the thermoplastic urethane 2 < / RTI > base layer. Therefore, in the case where the base layer 10 has a two-layer structure, the screen film according to the present invention is extruded such that the thickness ratio of the screen layer 20, the first base layer and the second base layer is 3: 4: 3 do. Further, in the case of applying the triple extrusion, it is also possible to add a white, black and gray pigment to the second base layer so as to obtain a high quality image.

The extruded screen film is cooled by passing the film through a cooling roll and then biaxially stretched, for example, by machine direction (MDO) and transverse direction (TDO) continuously S50). That is, for example, MDO is performed in the machine direction (longitudinal direction) by passing through a longitudinal stretching machine having a plurality of roll (R) combinations, and then continuously passed through a transverse stretching machine to form a rail pattern. (TDO) in the transverse direction.

Thereafter, the film for longitudinally stretched and transversely stretched screens is immediately wound on a winding roll (S60).

Meanwhile, the first extruder, the cooling roll, the longitudinal extruder, the transverse extruder and the winder used in the manufacturing process of the screen according to the present invention are devices used in a conventional film manufacturing process. , The structure of each device is not particularly limited.

Further, by performing the extrusion in the step S30 and the stretching in the step S50 with a matte roller, the reflection efficiency of the screen can be increased.

The thickness of the screen of the present invention through the above-described process is set to 0.4 to 2.5 mm.

In addition, in the present invention, the back surface of the base layer 10, that is, the surface not in contact with the screen layer 20 may be provided with a grid pattern for enhancing the adhesive force between the screen and the other support, Shot processing may be performed on the exposed surface with 20 to 400 micrometers.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

By using the plastic screen and the manufacturing method according to the present invention, it is possible to easily clean the water even if there is foreign matter such as alcohol or food, and it is possible to easily realize a flat screen, a curved screen, a spherical screen, Lt; / RTI >

10: base layer
20: Screen layer

Claims (10)

A method of manufacturing a plastic screen comprising a base layer and a screen layer provided on the base layer,
(a) mixing a pigment, a flame retardant, an antistatic agent, a UV stabilizer and a resin as the screen layer, extruding the mixture into a pellet,
(b) preparing a resin for the base layer,
(c) multi-extruding the pellets of step (a) and the resin of step (b) to produce a film for a screen,
(d) longitudinally stretching the film produced in the step (c)
Wherein the steps (c) and (d) are performed by a matte roller. The method of claim 1,
Wherein the resin in steps (a) and (b) is any one of polypropylene (PP), polyethylene (PE), urethane, and thermoplastic urethane (TPU) or a mixture thereof. The method of claim 1,
The pigment includes titanium dioxide, zinc stearate (Zn-St) as a stabilizer, and plastic additive (N, N'-Ethylenebisstearamide) as a dispersant,
The flame retardant is a screen manufacturing method which is characterized in that it comprises a brominated flame retardants (Decabromodphenyl), antimony trioxide (Sb 2 O 3), plastic additives (N, N'-Ethylenebisstearamide) and phenolic antioxidant (Pentaerythritol tetrakis) as a dispersant. 4. The method of claim 3,
Wherein the screen layer comprises 5.9 to 17.7 parts by weight of the pigment, 15.6 to 23.4 parts by weight of the flame retardant, 0.1 to 5 parts by weight of the antistatic agent, 0.1 to 10 parts by weight of the UV stabilizer, 5 parts by weight of the flame retardant resin, and 48.9 parts by weight to 78.3 parts by weight of the flame retardant resin. 5. The method of claim 4,
Wherein the pigment comprises 4.5 to 13.5 parts by weight of titanium dioxide, 0.3 to 0.9 parts by weight of zinc stearate (Zn-St), and 1.1 to 3.3 parts by weight of a plastic additive, based on 100 parts by weight of the screen layer Lt; / RTI > The method of claim 5,
Wherein the flame retardant comprises 10.22 parts by weight to 15.33 parts by weight of a brominated flame retardant, 2.78 parts by weight to 4.17 parts by weight of antimony trioxide (Sb 2 O 3 ), 1.92 parts by weight to 2.88 parts by weight of a plastic additive, And 0.68 parts by weight to 1.02 parts by weight of an inhibitor. A screen characterized in that it is made by the screen manufacturing method of any one of claims 1 to 6. 8. The method of claim 7,
Wherein the screen has a thickness of 0.4 to 2.5 mm. 8. The method of claim 7,
Wherein the screen layer and the base layer are extruded with a thickness ratio of 3: 7. 8. The method of claim 7,
And a grid pattern is formed on a back surface of the base layer.
KR1020160067273A 2016-05-31 2016-05-31 Plastic screen and method of manufacturing the same KR20170135405A (en)

Priority Applications (1)

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KR1020160067273A KR20170135405A (en) 2016-05-31 2016-05-31 Plastic screen and method of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160067273A KR20170135405A (en) 2016-05-31 2016-05-31 Plastic screen and method of manufacturing the same

Publications (1)

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KR20170135405A true KR20170135405A (en) 2017-12-08

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