WO2020183561A1 - Film de diffusion - Google Patents

Film de diffusion Download PDF

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Publication number
WO2020183561A1
WO2020183561A1 PCT/JP2019/009661 JP2019009661W WO2020183561A1 WO 2020183561 A1 WO2020183561 A1 WO 2020183561A1 JP 2019009661 W JP2019009661 W JP 2019009661W WO 2020183561 A1 WO2020183561 A1 WO 2020183561A1
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WO
WIPO (PCT)
Prior art keywords
scattering
molded product
scattering film
haze
film
Prior art date
Application number
PCT/JP2019/009661
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English (en)
Japanese (ja)
Inventor
健策 廣瀬
啓司 ▲高▼橋
慶峰 菅原
Original Assignee
株式会社ダイセル
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 株式会社ダイセル filed Critical 株式会社ダイセル
Priority to PCT/JP2019/009661 priority Critical patent/WO2020183561A1/fr
Priority to JP2021504636A priority patent/JP7064652B2/ja
Priority to TW108147498A priority patent/TW202033685A/zh
Publication of WO2020183561A1 publication Critical patent/WO2020183561A1/fr

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties

Definitions

  • the present invention relates to a scattering film arranged between a molded product and a transparent member arranged so as to cover the design surface of the molded product.
  • the design surface of a molded product such as the housing of a mobile information terminal may be processed to adjust the appearance of the design surface.
  • a method of this treatment for example, as in Patent Document 1, a light-transmitting layer having wrinkles formed on its surface is placed on the design surface of the molded product, and external light is reflected on the design surface of the molded product.
  • a method of scattering with wrinkles in a light transmitting layer is known. In this method, the texture and color tone of the design surface of the molded product are adjusted by the scattered light generated in the light transmitting layer.
  • a transparent member is arranged so as to cover the design surface, and the molded product and the transparent member may be brought into close contact with each other via a transparent optical glue member.
  • the wrinkles of the light transmissive layer are filled with the optical glue member, and scattered light may be difficult to obtain.
  • the transparent member is arranged so as to cover the design surface of the molded product, and even when the molded product and the transparent member are brought into close contact with each other via the optical glue member, the external light reflected by the design surface of the molded product is reflected.
  • the purpose is to scatter well and make the appearance of the design surface of the molded product adjustable.
  • the scattering film according to one aspect of the present invention is incident on the molded product and the transparent member arranged so as to cover the design surface of the molded product via the transparent member. Moreover, it is a scattering film that scatters the light reflected on the design surface of the molded product, and includes a sheet-like scattering member in which the internal haze is set to a value in the range of 10% or more and 90% or less.
  • the internal haze of the scattering member is set to a value in the above range, the haze can be adjusted by the internal haze even if no wrinkles or irregularities are formed on the surface.
  • an appropriate haze can be given to the scattering member, and the light scattering property of the scattering member of the scattering film can be increased.
  • the transparent member is arranged so as to cover the design surface of the molded product, for example, even when the molded product and the transparent member are brought into close contact with each other via the optical glue member, the internal haze of the scattering member can be adjusted.
  • the external light reflected on the design surface of the molded product is scattered by the scattering film, and the appearance of the molded product can be satisfactorily adjusted.
  • a sheet-shaped support member that supports the scattering member may be further provided, and the scattering member may be arranged so as to cover one surface of the support member. As a result, the scattering member can be stably supported by the support member in the scattering film.
  • the scattering member may have a coating material extending along the surface of the support member and filler particles dispersed in the coating material. Thereby, the scattering member can be easily formed by using the coating material and the filler particles. Further, the internal haze of the scattering member can be easily adjusted by, for example, the amount of filler particles.
  • the ratio H1 / H2 when the absolute value of the internal haze of the scattering member is H1 and the absolute value of the total haze is H2 is set to a value in the range of 0.7 or more and 1.0 or less. You may be.
  • the internal haze of the scattering member can be set to a wide range of values, and the internal haze of the scattering member can be set to a value significantly larger than, for example, the external haze.
  • the degree of freedom in designing the light scattering property of the scattering film can be improved, and good light scattering property can be imparted to the scattering film.
  • the arithmetic mean roughness Ra of the surface of the scattering member opposite to the support member may be set to a value in the range of 0.1 ⁇ m or less. As a result, a high degree of flatness can be imparted to the surface of the scattering member. Therefore, while ensuring the light scattering property of the scattering film, for example, when the optical glue member is superposed on the surface of the scattering member, the adhesion between the scattering member and the optical glue member can be improved.
  • An optical glue member that is arranged on the side of the scattering member opposite to the support member and is filled between the scattering member and the transparent member may be further provided. As a result, the scattering member and the transparent member can be brought into close contact with each other via the optical glue member while ensuring the light scattering property of the scattering film.
  • the molding unit according to one aspect of the present invention includes the molded product, the transparent member, and the scattering film.
  • the scattering member can adjust the haze by the internal haze even if the surface is not wrinkled or uneven, the light scattering property of the scattering member can be improved by increasing the internal haze of the scattering member. Therefore, in the molding unit, for example, even when an optical glue member is arranged between the molded product and the transparent member, the external light reflected on the design surface of the molded product is scattered by adjusting the internal haze of the scattering member. Can be scattered better.
  • the transparent member is arranged so as to cover the design surface of the molded product, and even when the molded product and the transparent member are brought into close contact with each other via the optical glue member, the transparent member is reflected on the design surface of the molded product.
  • the external light can be scattered well and the appearance of the design surface of the molded product can be adjusted.
  • FIG. 1 is a schematic cross-sectional view of the molding unit 10 according to the embodiment.
  • FIG. 2 is an enlarged view of the scattering film 1 of FIG.
  • the molding unit 10 includes a molded product 4, a transparent member 5, optical glue (OCA) members 6 and 7, and a scattering film 1.
  • the scattering film 1 includes both a sheet-shaped support member 2 and a scattering member 3.
  • the molding unit 10 is, for example, a housing of the device.
  • the molding unit 10 is an exterior product of the device.
  • a driving element for driving the apparatus is housed inside the molding unit 10.
  • the device is not limited to a mobile information terminal such as a smartphone or a tablet here, but may be another device driven manually or by electric power, for example.
  • the molded product 4 is an article having a constant shape and constitutes the basic structure of the molding unit 10.
  • the molded product 4 is, for example, an injection molded product.
  • the material of the molded product 4 can be appropriately selected. Examples of this material include a resin material and a metal material.
  • the molded product 4 may be integrally composed of a single or composite material, or may be composed of a core material and a surface material that covers the surface of the core material.
  • the design surface of the molded product 4 is flat here, but may be curved.
  • the design surface of the molded product 4 has a total light transmittance of 20% or less, and is opaque as an example.
  • a metal layer is formed on the design surface of the molded product 4 of the present embodiment.
  • the transparent member 5 is arranged so as to cover the design surface of the molded product 4.
  • the material of the transparent member 5 can be appropriately selected. Examples of this material include a resin material and a glass material.
  • the transparent member may be composed of a single material, or may be composed of a plurality of materials stacked on top of each other.
  • the thickness dimension of the transparent member 5 can be set as appropriate. At least a part of the transparent member 5 may be printed. When printing is performed on the entire surface of the transparent member 5, at least a part of the printed portion has transparency.
  • the optical glue member 6 is arranged on the side opposite to the scattering member 3 of the support member 2 and is filled between the molded product 4 and the support member 2.
  • the optical glue member 6 is arranged so as to overlap the support member 2.
  • the optical glue member 6 adheres the scattering film 1 to the molded product 4.
  • the optical glue member 7 is arranged on the side opposite to the support member 2 of the scattering member 3 and is filled between the scattering member 3 and the transparent member 5.
  • the optical glue member 7 is arranged so as to overlap the scattering member 3.
  • the optical glue member 7 adheres the scattering film 1 to the transparent member 5.
  • the scattering film 1 is light that is incident on the molded product 4 and the transparent member 5 arranged so as to cover the design surface of the molded product 4 through the transparent member 5 and reflected on the design surface of the molded product 4. To scatter.
  • the design surface referred to here refers to a surface on which various designs have been applied to decorate the object.
  • the design differs depending on the use of the object to which the scattering film 1 is attached.
  • Typical designs include, for example, metal toning, black or other single or multiple colors, those using transparency, patterns (including those using letters, figures, symbols, colors, etc.), and fine.
  • the uneven patterns including those using embossing or the like
  • one type or two or more types can be mentioned.
  • the design surface may be directly formed on the molded product 4 made of a single member.
  • the design surface may be formed on the separate member of the molded product 4 composed of the base member and another member such as a film member laminated on the base member.
  • the scattering film 1 of the present embodiment is set to a value in the range where the total light transmittance is 80% or more.
  • the total light transmittance is more preferably in the range of 85% or more, and particularly preferably in the range of 89% or more.
  • the transmission image sharpness of the optical comb width of 0.5 mm is set to a value in the range of 30% or more and 99% or less.
  • the transmission image sharpness is more preferably in the range of 50% or more and 98% or less, and particularly preferably in the range of 70% or more and 97% or less.
  • the 60 ° gloss of the surface of the scattering member 3 opposite to the support member 2 is set to a value in the range of 3% or more and 100% or less.
  • the 60 ° gloss is more preferably in the range of 40% or more and 100% or less, and particularly preferably in the range of 80% or more and 100% or less.
  • the support member 2 of the scattering film 1 has a sheet shape and supports the scattering member 3.
  • the support member 2 is made of, for example, a moldable resin material. Examples of this material include polycarbonate (PC), polymethyl methacrylate resin (PMMA), polyethylene terephthalate (PET) and the like.
  • the thickness dimension of the support member 2 can be appropriately set, but here, it is set to a value of several tens of ⁇ m.
  • the scattering member 3 is arranged so as to cover one surface of the support member 2.
  • the thickness dimension of the scattering member 3 can be set as appropriate, but here it is smaller than the thickness dimension of the support member 2.
  • the thickness dimension of the scattering member 3 is set to a value in the range of, for example, 5 ⁇ m or more and 20 ⁇ m or less.
  • the arithmetic mean roughness Ra on the side of the scattering member 3 opposite to the support member 2 is set to a value in the range of 0.1 ⁇ m or less.
  • the scattering member 3 has an internal haze set to a value in the range of 10% or more and 90% or less.
  • the scattering member 3 has a coating material 30 and filler particles 31.
  • the coating material 30 extends along the surface of the support member 2.
  • the coating material 30 contains an ultraviolet curable resin here.
  • the filler particles 31 are dispersed in the coating material 30.
  • the filler particles 31 are made of a resin material such as styrene or an inorganic material such as silica.
  • the average particle size of the filler particles 31 can be set as appropriate, but as an example, it can be set to a value in the range of 1.0 ⁇ m or more and 3.0 ⁇ m or less.
  • the average particle size referred to in this document is a value measured using a laser diffraction / scattering type particle size distribution measuring device based on a method based on JIS Z8825.
  • the average particle size of the filler particles 31 is less than 1.0 ⁇ m, it becomes difficult to obtain the light scattering effect of the filler particles 31. Further, if the average particle size of the filler particles 31 exceeds 3.0 ⁇ m, the filler particles 31 may fall off from the scattering member 3.
  • the thickness dimension of the scattering member 3 is less than 5 ⁇ m, the filler particles 31 may fall off from the scattering member 3. Further, if the thickness dimension of the scattering member 3 exceeds 20 ⁇ m, the smoothness of the surface of the scattering member 3 may be excessively lowered.
  • the haze of the scattering member 3 is adjusted by the internal haze regardless of the flatness of the surface. Increasing the amount of the filler particles 31 added increases the internal haze of the scattering member 3. As a result, in the scattering film 1, the internal haze of the scattering member 3 is set to a value in the range of 10% or more and 90% or less.
  • the ratio H1 / H2 when the absolute value of the internal haze of the scattering member 3 is H1 and the absolute value of the total haze is H2 is set to a value in the range of 0.7 or more and 1.0 or less. ing.
  • the ratio H1 / H2 is more preferably in the range of 0.9 or more and 1.0 or less, and particularly preferably in the range of 0.99 or more and 1.0 or less.
  • the measured value of the internal haze H1 is larger than the measured value of the total haze H2, and the difference between the two measured values is within 0.5%.
  • the ratio H1 / H2 is set to 1.00.
  • the total haze of the scattering member 3 is 10% or less
  • the arithmetic mean roughness Ra of the surface of the scattering member 3 opposite to the support member 2 is a value in the range of 0.1 ⁇ m or less. It can also be said that the film is set to.
  • the internal haze of the scattering member 3 is less than 10%, it becomes difficult to impart sufficient light scattering property to the scattering member 3. Further, if the internal haze of the scattering member 3 exceeds 90%, the visibility of the design surface of the molded product 4 deteriorates, and a desired appearance may not be obtained.
  • the ratio H1 / H2 is less than 0.7, it becomes difficult to set a sufficient internal haze for the scattering member 3. Further, if the amount of the filler particles 31 added to the scattering member 3 is excessive, the filler particles 31 may be deposited on the surface of the scattering member 3, the filler particles 31 may fall off, or the scattering member 3 may become brittle.
  • the molding unit 10 when external light is incident, a part of the external light passes through the transparent member 5, the optical glue member 7, the scattering film 1, and the optical glue member 6 and is reflected on the design surface of the molded product 4. .. This reflected light passes through the optical glue member 6 again and is incident on the scattering film 1. At this time, the reflected light is scattered by the filler particles 31 at the scattering member 3. This scattered light passes through the optical glue member 7 and the transparent member 5 in order.
  • the molding unit 10 when external light is incident, a part of the external light passes through the transparent member 5 and the optical glue member 7, and is reflected by the filler particles 31 at the scattering member 3 without passing through the scattering member 3. Scattered. The scattered light passes through the optical glue member 7 and the transparent member 5 in order like the scattered light.
  • the appearance of the design surface of the molded product 4 via the transparent member 5, the optical glue member 7, the scattering film 1, and the optical glue member 6 is adjusted by the scattering film 1.
  • the degree of this adjustment changes mainly depending on the internal haze of the scattering member 3.
  • the scattering film 1 when the design surface of the molded product 4 is a flat surface, the use of the scattering film 1 imparts a texture as if fine irregularities were formed on the design surface of the molded product 4.
  • the scattering film 1 can be said to be a decorative film that apparently modifies the surface of the molded product 4 by adjusting the way the reflected light spreads from the design surface.
  • the internal haze of the scattering member 3 is set to a value in the above range, the haze is adjusted by the internal haze even if no wrinkles or irregularities are formed on the surface. it can. As a result, by adjusting the internal haze, it is possible to impart an appropriate haze to the scattering member 3 and increase the light scattering property of the scattering film 1 by the scattering member 3.
  • the scattering member 3 By adjusting the internal haze, the external light reflected on the design surface of the molded product 4 is scattered by the scattering film 1, and the appearance of the molded product 4 can be satisfactorily adjusted.
  • the scattering film 1 includes a sheet-shaped supporting member 2 that supports the scattering member 3, and the scattering member 3 is arranged so as to cover one surface of the supporting member 2, the scattering member 3 is arranged in the scattering film 1. 3 can be stably supported by the support member 2.
  • the scattering member 3 has a coating material 30 extending along the surface of the support member 2 and filler particles 31 dispersed in the coating material 30.
  • the scattering member 3 can be easily formed by using the coating material 30 and the filler particles 31.
  • the internal haze of the scattering member 3 can be easily adjusted by, for example, the amount of filler particles 31.
  • the scattering member 3 has a ratio H1 / H2 set to a value in the range of 0.7 or more and 1.0 or less. Therefore, the internal haze of the scattering member 3 can be set to a wide range of values, and the internal haze of the scattering member 3 can be set to a value significantly larger than, for example, the external haze. As a result, the degree of freedom in designing the light scattering property of the scattering film 1 can be improved, and good light scattering property can be imparted to the scattering film 1.
  • the arithmetic mean roughness Ra of the surface of the scattering member 3 opposite to the support member 2 is set to a value in the range of 0.1 ⁇ m or less.
  • a high degree of flatness can be imparted to the surface of the scattering member 3. Therefore, while ensuring the light scattering property of the scattering film 1, for example, when the optical glue members 6 and 7 are superposed on the surface of the scattering member 3, the adhesion between the scattering member 3 and the optical glue members 6 and 7 is achieved. Can be improved.
  • the scattering film 1 includes an optical glue member 7 which is arranged so as to be overlapped with the scattering member 3 and is filled between the scattering member 3 and the transparent member 5. As a result, the scattering member 3 and the transparent member 5 can be brought into close contact with each other via the optical glue member 7 while ensuring the light scattering property of the scattering film 1.
  • the molding unit 10 includes a molded product 4, a transparent member 5, and a scattering film 1.
  • the scattering member 3 can adjust the haze by the internal haze even if the surface is not wrinkled or uneven, the light scattering property of the scattering member 3 can be improved by increasing the internal haze of the scattering member 3. Therefore, in the molding unit 10, for example, even when the optical glue members 6 and 7 are arranged between the molded product 4 and the transparent member 5, the internal haze of the scattering member 3 can be adjusted to improve the design surface of the molded product 4. The reflected external light can be satisfactorily scattered by the scattering film 1.
  • Nanosilica-containing acrylic UV curable compound "UVHC7800G” manufactured by Momentive Performance Materials Japan LLC
  • Silica spherical fine particles A “KE-P250” manufactured by Nippon Shokubai Co., Ltd. (average particle size 2.5 ⁇ m)
  • Silica spherical fine particles B “KE-S100” manufactured by Nippon Shokubai Co., Ltd. (average particle size 1.0 ⁇ m)
  • Fine powder synthetic silica “Silicia 730” manufactured by Fuji Silysia Chemical Ltd. (amorphous particles, maximum particle size 3.0 ⁇ m)
  • Cross-linked styrene beads “SX-130H” manufactured by Soken Chemical Co., Ltd.
  • Fluorine-based compound A having a polymerizable group Fluorine-based compound A having a polymerizable group: "Futergent 602A” manufactured by Neos Co., Ltd.
  • Photoinitiator A "Irgacure 184" manufactured by BASF Japan Ltd.
  • Photoinitiator B "Irgacure 907” manufactured by BASF Japan Ltd.
  • PET Polyethylene terephthalate
  • PET Polyethylene terephthalate
  • TAC Cellulose triacetate
  • Fujitac TG60UL manufactured by Fuji Film Co., Ltd.
  • Example 1 77.6 parts by weight of urethane acrylate, 19.4 parts by weight of bisphenol A type epoxy acrylate, 3 parts by weight of cellulose acetate propionate, 1 part by weight of photoinitiator A, 1 part by weight of photoinitiator B, fluorine-based compound having a polymerizable group 0.2 parts by weight of A was dissolved in a mixed solvent of 109 parts by weight of methyl ethyl ketone and 30 parts by weight of 1-butanol. Further, 1.6 parts by weight of silica spherical fine particles A were added as filler particles 31 to this mixed solvent. As a result, a solution used as a material for the scattering member 3 was prepared.
  • This solution was cast on the PET film, which is the support member 2, using a wire bar (# 24). Then, the solution and the support member 2 were left in an oven at 80 ° C. for 1 minute, and the solvent in the solution was evaporated to obtain an intermediate of the scattering member 3 having a thickness dimension of about 13 ⁇ m from the solution. Then, the intermediate was subjected to ultraviolet curing treatment by irradiating the intermediate with ultraviolet rays for about 5 seconds (irradiation with an integrated light amount of about 100 mJ / cm 2 ) using a high-pressure mercury lamp. As a result, the coating material 30 was formed, and the scattering film 1 of Example 1 was obtained.
  • Example 2 The scattering film 1 of Example 2 was obtained under the same production conditions as in Example 1 except that the amount of the silica spherical fine particles A added was changed to 3.8 parts by weight. Further, the scattering film 1 of Example 3 was obtained under the same production conditions as in Example 1 except that the amount of silica spherical fine particles A added was changed to 38 parts by weight.
  • Example 4 The scattering film 1 of Example 4 was obtained under the same conditions as in Example 1 except that 3.8 parts by weight of silica spherical fine particles B was added instead of the silica spherical fine particles A.
  • the scattering film 1 of Example 5 was obtained under the same conditions as in Example 1.
  • Example 6 and 7 The scattering film 1 of Example 6 was obtained under the same conditions as in Example 1 except that the cellulose acetate propionate was 6 parts by weight and the silica spherical fine particles A were 3.8 parts by weight.
  • the scattering film 1 of Example 7 was obtained under the same conditions as in Example 1 except that 10 parts by weight of fine powder synthetic silica was added instead of the silica spherical fine particles A.
  • Example 8 166.7 parts by weight of nanosilica-containing acrylic UV-curable compound, 1 part by weight of photoinitiator A, 1 part by weight of photoinitiator B, 21 parts by weight of crosslinked styrene beads, 0.2 parts by weight of fluorine-based compound A having a polymerizable group.
  • a solution was prepared by dissolving in a mixed solvent of 48 parts by weight of methyl ethyl ketone and 13 parts by weight of 1-butanol.
  • Example 8 This solution was cast on the PET film which is the support member 2 using a wire bar (# 6). Then, the solution and the support member 2 were left in an oven at 80 ° C. for 1 minute to evaporate the solvent, thereby forming an intermediate of the scattering member 3 having a thickness dimension of about 5 ⁇ m. After that, the scattering film 1 of Example 8 was obtained under the same conditions as in Example 1.
  • the measured value of the internal haze H1 was larger than the measured value of the total haze H2, and the difference between the two measured values was within 0.5%.
  • H1 / H2 was set to 1.00.
  • the scattering member 3 is configured so that at least the internal haze is set larger than the external haze. Further, in Examples 1 to 8, the ratio H1 / H2 of the scattering member 3 is set to a value in the range of 0.7 or more and 1.0 or less.
  • the scattering members 3 of Examples 1 to 6 have a ratio of H1 / H2 of at least 0.98 or more, and the internal haze is significantly higher than that of the external haze.
  • the scattering members 3 of Examples 1 to 6 are configured so that the surface on the side opposite to the support member 2 has high flatness.
  • the internal haze of the scattering member 3 is set to a value of 10.4 or more, and the haze is appropriately set.
  • the scattering members 3 of Examples 1 to 8 have good light scattering properties regardless of the presence or absence of external haze.
  • the total haze and internal haze of the scattering member 3 and the arithmetic mean roughness Ra of the surface of the scattering member 3 opposite to the support member 2 are proportional to the blending amount of the filler particles 31. It turned out to be in a relationship. Further, it was found that the total light transmittance of the scattering film 1, the transmitted image sharpness, and the 60 ° gloss of the scattering member 3 are inversely proportional to the blending amount of the filler particles 31.
  • the 60 ° gloss value of the scattering member 3 is kept relatively high, and the surface of the scattering member 3 opposite to the support member 2 is formed to be highly flat, but scattered. Since the total haze of the member 3 is substantially set only by the internal haze, it is considered that the reflected light from the design surface of the molded product 4 can be satisfactorily scattered.
  • Example 7 it was found from the values of the ratio H1 / H2 that the external haze of the scattering member 3 was relatively large.
  • amorphous silica particles were used as the filler particles 31, and in Example 8, spherical styrene bead particles were used as the filler particles 31, so that the surface of the scattering member 3 was slightly surfaced. It is considered that the unevenness is easily formed.
  • Examples 7 and 8 as described above, it is considered that the antiglare property is improved because the external haze of the scattering member 3 is relatively large. Further, in Examples 7 and 8, the external haze of the scattering member 3 is relatively large, so that the transmission image sharpness is suppressed as compared with Examples 1 to 6. Nevertheless, in Examples 7 and 8, since the internal haze of the scattering member 3 is set to be large to some extent, it is considered that the reflected light from the design surface of the molded product 4 can be appropriately scattered.
  • the scattering films 1 of Examples 1 to 8 all have an appropriate total light transmittance. Therefore, when the scattering films 1 of Examples 1 to 8 are applied to the molding unit 10 and the apparatus provided with the molding unit 10, the appearance of the design surface of the molded product 4 is improved by transmitting the reflected light from the design surface of the molded product 4. It is thought that it can be adjusted to.
  • a plurality of scattering films 1 may be arranged on top of each other.
  • another film or optical glue member may be arranged between the adjacent scattering films 1.
  • the scattering member 3 may be arranged on the molded product 4 side, and the support member 2 may be arranged on the transparent member 5 side.
  • the support member 2 may be omitted.
  • the scattering film 1 is composed of, for example, only the scattering member 3.
  • the configuration of the scattering member 3 is not limited to the configuration including the coating material 30 and the filler particles 31.

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  • Optical Elements Other Than Lenses (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un film de diffusion qui provoque une diffusion de la lumière entre un produit moulé et un élément transparent disposé de manière à recouvrir la surface de conception du produit moulé, la lumière étant incidente à travers l'élément transparent et étant réfléchie par la surface de conception du produit moulé. Ce film de diffusion est équipé d'un élément de diffusion en forme de feuille dont le trouble interne a été fixé à une valeur dans la plage de 10 % à 90 % inclus.
PCT/JP2019/009661 2019-03-11 2019-03-11 Film de diffusion WO2020183561A1 (fr)

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PCT/JP2019/009661 WO2020183561A1 (fr) 2019-03-11 2019-03-11 Film de diffusion
JP2021504636A JP7064652B2 (ja) 2019-03-11 2019-03-11 加飾フィルム
TW108147498A TW202033685A (zh) 2019-03-11 2019-12-25 散射膜

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PCT/JP2019/009661 WO2020183561A1 (fr) 2019-03-11 2019-03-11 Film de diffusion

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Citations (5)

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JP2011209675A (ja) * 2009-09-04 2011-10-20 Sumitomo Chemical Co Ltd 光拡散フィルムおよびその製造方法、光拡散性偏光板、ならびに液晶表示装置
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