TWM355162U - Decoration plate and cover plate with high transparency and softness touch feeling - Google Patents

Description

M355162 VIII. New description: [New technical field] This creation is about a decorative board with high brightness and soft touch, including the structure and light transmission design of this decorative board, and The material is combined with the outer casing of various products that people can touch by hand, and its I communication and consumer electronics, with a soft touch and transparency requirements, Fang Wei ^ transparency effect makes the back of the decorative board Information can be easily identified [prior art] °a The plastic material is coated with a soft touch, which is a known technique for products that are often touched by human hands. In the early days, in order to provide a soft touch (for example, a soft touch) on the surface of a plastic molded article or a metal molded article, a coating material was sprayed directly on the surface of the molded article. In the Japanese Patent Application Laid-Open No. Hei 2-12443, it is disclosed that the pigment particles and the ionizing radiation-curable resin are sprayed on the film to produce a good effect, which is commonly known as a decorative sheet. However, this technology requires ionization to modulate the curing resin to be irradiated with electrons. [It becomes complicated and mass production is not ideal. Japanese Patent Laid-Open No. 59-202830 and No. 59-202830 both propose the use of injection molding technology to form a sheet into a decorative panel to produce a surface of f-feel. However, sticking it to the table (4) often results in poor interface overlap due to the formed curve. Therefore, the patent No. 62-251111 proposes a special method of placing a thermoplastic resin plate in an injection molding die; then injecting a resin into the mold; thus obtaining a 4 M355162 plaque and an injection molded part-body forming' The result is that the skirting board and the curved injection molding piece do not have poor interface overlap. For the material part, 1994 U.S. Patent No. 5,354,397, Sekisui c., Lt〇 reveals that the use of foamed layers, elastic resins and elastic particles can cause uneven surface hooks. Such as suede-like touch. 2 〇〇 2 years of water is further proposed to use extrusion molding instead of injection molding, can produce a soft touch of decorative panels in a roll-to-roll manner. 2006 US Patent No. 20060078745, Bayer Bayer The company also revealed the use of foamed materials, elastic resins and elastic particles to create a soft touch effect on the surface of the bump. Transmission, first, and some decorative panels are mainly used in automotive interior design, so it has a soft touch. Decorative panels are usually combined with coloring materials and used together with other materials. Therefore, the transparency of such decorative panels has never been discussed. With the popularity and lightness of (four) sex electronics and displays, the products of (four) products = exhibition The soft touch that we liked, and the display that does not affect the design of the built-in pattern, or the display, the transparency of the county plaque (4) is - important art is not targeted, The transmittance is tested or modified. There is no suggestion or guidance from the prior art, but the transparency of the plaque, but still retains its necessary soft touch. Cans [new content] The second sense of the material of the decorative board itself, Often necessary = sub: its accumulation of the table (four) has a transparency of the decorative board is added to the resin, also caused by scattering 5 M355162, 'the purpose of 'is to provide a high transparency and soft 4 board 2G ° By applying a layer of transparent resin 21 on the 10 ul of concave surface 12 of the decorative panel having a soft touch, the convex height of the surface of the control material of the recess is adjusted, and the transmittance of the panel is also controlled. Even if the transparent resin layer material is filled in the recess, the light transmission is two: 'But its soft touch will also decrease. Therefore, the partial hemisphere is filled with two = ground, but not completely filled with 'the surface remains concave and convex, to 2 At the same time, it has the effect of soft touch and high transparency, which is the main technical focus of this creation. Generally, the gentleman, the total thickness of the slab of the 5th layer I is less than 300 micro-in the thickness direction. The transmittance is greater than 20%. The multi-layer eve of the soft touch decorative panel 2G;: at least: - a transparent plastic substrate 11 having a shape of a semi-transparent resin layer 12' on the transparent transparent resin layer (4) 21, partially filled with a hemispherical shape The recessed space, but not filled with the king, so that the surface remains concave and convex. The creative (4) spherical particles are elastic particles 13 material, and both the bright resin 12 and the transparent resin layer 21 are thermoplastic elastomers. The method for manufacturing a decorative panel includes the steps of: dispersing the pillar 13 in a hot-melt or solvent-containing thermoplastic tree; distributing the eight/dispersion on a flat transparent plastic substrate 2, Cooling or drying to form a semi-transparent (10) (four) 12; on a semi-transparent hemispherical surface, coating a layer of _ layer in 2 wide, = layer complement + spherical recess 'but not completely filled, so that the surface remains concave Convex shape 6 M355162. The method for distributing the dispersion may be selected from the group consisting of coating, transfer, printing, extrusion, and lamination. The smooth surface of the decorative sheet with soft touch is printed, and then the plastic back sheet 32 is formed on the eight P brush surface by the plastic extrusion or injection molding on the printing surface 31, thereby providing the decorative board with better rigidity. Prevents the rise of y y into a transparent cover with soft touch, which can be used for electronic products with display function and soft touch, such as: mobile phone, personal digital assistant (PDA) display, portable Computer, etc. Due to the direct contact application, it is also required to have excellent anti-friction properties in addition to the characteristics of the above decorative panels. The soft touch coating 12 used in the present invention is a semi-transparent resin layer 12, wherein the thermoplastic resin refers to an elastomeric polymer material which is called rubber elasticity at room temperature and can be plasticized at a high temperature. Various shapes. The above thermoplastic elastomers include, for example, urethanes, polystyrenes, polyolefins, polyesters, polyvinyl chloride (Polyvinyl CM). Ride), Polyamide, Ionoraer, Fluororubber, 1,2-P Plylybutadiene, Trans-polyisoprene (Trans 14_p〇lyis〇prene) & synthetic natural rubber wins, etc., can be used alone or in combination. Thermoplastic elastomers generally include: a soft segment molecule is both a rubber component with entropic elasticity; and with a hard segment molecular molecule that is binding to prevent plastic deformation, and in the moldable range, it sometimes contains a portion of 7 M355162 Father Union,, 'mouth structure. However, the exemption does not include a high-density three-dimensional cross-linking network structure. The hardness of the thermoplastic elastomer, according to the claw K6301A- and the hardness standard, is preferably from 20 to 98'. The standard differs depending on the desired softness and the hardness of the elastic particles used. Choosing the best thermoplastic resin requires consideration of the desired characteristics. For example, if the desired properties include resistance to abrasion, abrasion resistance, good touch and appearance, urethane can be best used. If good light fastness and heat retention are required, a non-yellowing aliphatic isocyanate should be used to synthesize the polyurethane. The conditions for selecting the particles 13 are mainly due to the particle size and the phenomenon of surface irregularities, but the particles are too large to cause the coating to be brittle. The average particle diameter of the exogenous particles is usually between 1 and 50 μm, preferably between 5 and 40 μm. Ding] If the hot melt is used for the pressing process, the elastic particles must be extruded at a high temperature = still not melted, that is, the softening temperature of the elastic particles must be higher than the hot dusting temperature of the thermoplastic. If the elastic particle-dissolving filament plastic resin is fused to one, the desired uneven surface cannot be formed. If the use and the agent are applied by coating, there is no such consideration. The elastic particles used in this creation must have the elasticity of retribution, that is, after being deformed by pressure, the pressure can be quickly restored. In general, the elastic particles 'including those made of polyurethane, acrylic resin (preferably acrylonitrile-polyester), polystyrene, and stupid ethylene-dipentadiene copolymer. Although it is desirable to make _-shaped elastic particles; the particles obtained by the cold green crushing method, generally aspheric (four) shape, can also be used in 8 M355162. Generally, the elastomeric particles are present in an amount of from about 2G to about 5%, preferably from about 5 to about 150 parts, based on the weight of the thermoplastic resin. Further, two or more kinds of elastic particles can be used at the same time. When a relatively soft thermoplastic resin is used or a slightly rigid thermoplastic tree can be used, particles made of cross-linked polymethyl phthalic acid gl or a hard inorganic material can be used. The material of the transparent resin coating layer 21 of the present invention is selected from the same material range as the thermoplastic resin 12.

[Embodiment] The materials used in the following examples are as follows: Polyurethane resin (1) Polyurethane resin A: NIPP〇LAN 5037 manufactured by Nippon P〇iyurethane Industry c〇., Ud The solid content is 45%. (2) Polyurethane resin B: NIpp〇LAN512〇 manufactured by Okamoto Polyurethane Industry Co., Ltd.

Tf / 33 ° C, solid content of 3 〇 %, weight average molecular weight of 1 〇〇, 〇 (10). Polyurethane resin Group C: & NIPP0LAN 5232 manufactured by Nippon Polyamide Co., Ltd., Tg = 8 ° C, solid content of 30%, weight average molecular weight of 70, 〇〇〇. Elastic particles: (1) Elastic particles A: EBS100 manufactured by Nippon Shokubai Co., Ltd., which is an elastic particle of an acrylic resin, and has an average particle diameter of 1 μm. Young's modulus of elasticity is dynes/cm 2 . (2) Elastic particle Β: EBS300 manufactured by Nippon Shokubai Co., Ltd., which is an elastic particle of an acrylic resin, and has an average particle diameter of 3 μm. Young's modulus of elasticity is 5 χι〇8 9 M355162 dynes/cm 2 . (3) Elastic particle C: SBX-6 manufactured by Sekisui Plastics Co., Ltd., which is an elastic particle of polystyrene, and has an average particle diameter of 6 μm. Young's modulus of elasticity is 1X109 dynes/cm 2 . (4) Elastic particles d: EAX-20 manufactured by Sekisui Plastics Co., Ltd., which is an elastic particle of polystyrene, and has an average particle diameter of 2 μm. Young's modulus of elasticity is 8X1 〇7 dynes/cm 2 . (5) Hollow particles: expance L DE551 manufactured by Nippon Fillite Co., Ltd., which is a hollow expanded particle of a dichloro-ethylene-acrylonitrile copolymer having an average particle diameter of 40 μm. COLONATE HL III 二 曱 丙 propyl propyl hexa-diisocyanate addition

Isocyanate: (1) Isocyanate A: It is a sputum polyamine vinegar industrial plant.

Curing catalyst 〇. 5 parts

Elastic particle A

M355162, the above materials are stirred and mixed to obtain a resin formulation, which is the material of the soft touch coating 12. This material was coated on a polyethylene terephthalate (pET) film or sheet and dried at 8 ° C for 15 minutes to form a 6 μm conventional soft touch decorative panel 10. Then, the polyurethane resin A is used as the transparent resin coating layer 21 to cover the surface of the soft touch coating layer 12. This coating is about 1 to 2 micrometers thick, and a high transmittance soft touch decorative panel is formed. for. Embodiment 2 Referring to Figure 3, a cross-sectional structural view of a soft touch panel with a south transmittance according to a preferred embodiment of the present invention is shown. The high-transparency soft touch panel 3 〇 is obtained by the following method. The high-transparency soft touch decorative panel obtained above was printed on the flat surface (and the non-soft touch surface) by the screen printing technique, and the pattern content 31 to be presented on the cover was printed. The printed decorative board described above is placed in an open injection molding cavity so that the side having soft tactile properties is kept away from the resin injection port. After the film or sheet is statically fixed in the cavity, the mold is closed. The relative viscosity is 1.3 (in the concentration of methylene chloride solution 〇. 5 g / 1 〇〇 ml, 2 〇 it is measured), the injection of bi Spheno 1 a polycarbonate into the cavity The back sheet 32 is formed to obtain a high transmittance soft touch panel 30 having a total thickness of 6 mm. Embodiment 3: Referring to the production process of the mobile phone cover of FIG. 4, screen printing is first performed on the back side of the soft translucent decorative panel 20 of the present creation, and the M355162 pre-displays the pattern. The fabrication is made on its non-rough surface, forming 33. In the plane shape of the mobile phone cover with the steel knife die, the printed and punched type=褒 plaque is dented in the molding tool, and the three-dimensional creation of the mobile phone cover is presented. In the hole. The printing plate of the decorative board is facing the resin injection port of the injection molding, and the plastic backing material is injected after the holding of the i #奇杈〃, and after cooling, the mold is opened and the outer cover of the mobile phone is taken out. [Simple description of the map]

Rf ΐ t= The above and other objects, features, advantages and embodiments i are more obvious. The detailed description of the formula is as follows: Figure 1 is a cross-sectional view showing the soft touch I plaque Forbearance. Fig. 2 is a schematic cross-sectional view showing the structure of a 咼 咼 柔 柔 依照 依照 依照 依照 依照 依照 依照 according to the present invention. 3 is a schematic cross-sectional view showing a high transmittance soft touch panel in accordance with the presently preferred embodiment. #图图图。 A diagram showing the manufacturing process of the high transmittance soft touch mobile phone cover according to the preferred embodiment of the present invention. [Explanation of main component symbols] [Practical] 10: Conventional soft touch decorative panel 11 : Substrate 12 : Soft touch coating 丨 3 : Elastic particles [this creation] 2〇: High transmittance soft touch decoration Plate 21: Transparent resin coating 12 M355162 30: High transmittance soft touch cover 31: Screen printing pattern 32: Plastic back sheet 33: High transmittance soft touch decorative board after printing

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Claims (1)

M355162 4 * IX. Applying for a patent garden · 1 "A decorative board with high transparency and soft touch, at least: a transparent plastic substrate has a semi-transparent resin with a hemispherical surface on it. The translucent resin layer i has a transparent resin layer partially filling the recess between the hemispheres, but not completely filling, so that the surface remains concave and convex, and the transmittance is greater than 20%. 2. = Patent application scope item The decorative board, wherein the translucent tree layer comprises at least 5% by mass of a resin material and 15 (10) of spherical particles. 3. The decorative board according to claim 2, wherein the spherical particle is a kind Elastic particles 4. If the decorative board is covered by the special-purpose enclosure item, the transparent resin layer can arbitrarily change the filling amount of the recess to control the convex height and transparency of the surface of the decorative panel.手机 Transparency and soft touch of the phone cover, including the high transparency and soft touch of the decorative board as described in the scope of claim 1 and a rigid plastic back plate, the two are closely combined to maintain the shape of the cover Do not 6. The mobile phone cover with high transparency and soft touch as described in claim 5, wherein the plastic back plate is selected from the group consisting of polycarbonate, polyacrylic acid, and abalone. A group consisting of ethylene, polyethylene, and poly(p-diacetate).