CN102279425B - Hardened film with three-dimensional texture - Google Patents

Abstract

A hardened film having a three-dimensional texture, the hardened film comprising: the three-dimensional grain layer comprises at least one dispersion area capable of enabling light to generate a light splitting effect and at least one diffusion area capable of enabling incident light to generate a diffusion effect. By arranging the dispersion area and the diffusion area which generate different refraction effects on incident light on the three-dimensional grain layer, the three-dimensional grains of the hardened film can generate different visual sense changes. Because the invention achieves the effects of setting patterns, generating brightness and the like by only using the concave-convex structure, other reflecting layers or pattern layers are not needed to be arranged during manufacturing, and the invention has the effect of simple manufacturing process.

Description

Hardened film with three-dimensional texture

technical field

The invention relates to a cured film, in particular to a cured film with three-dimensional textures which is suitable for in-mold inlay decoration and designed for surface textures.

Background technique

In-mold inlay decoration (Insert mold decoration, referred to as IMD) is a new type of decoration technology, which mainly puts the finished hardened film into the injection molding mold. When the plastic raw material is injected into the mold to form an object, The above-mentioned hardening film can be directly embedded on the surface of the object and fixedly combined with the object. Common objects with a hardening film include: the shell of information products, the panel of home appliances, and the interior decoration of cars.

There are many kinds of cured films in the past, among which Fig. 1 is a utility model No. M286119 of the Taiwan Announcement of China. The multilayer substrate 1 disclosed in this utility model has three-dimensional lines and high reflection characteristics, and it mainly includes: a PET (polyester) with a concave-convex surface. Polyethylene terephthalate) film 11, the PET film 11 is made of transparent or translucent material, and includes a plurality of protrusions 111 and a plurality of relatively concave depressions 112, the multilayer substrate 1 Also includes: an aluminum layer 12 formed on the bottom of the PET film 11 and concavo-convex with it, a PET bottom plate 13 with a flat surface 131 and an EVA for bonding the aluminum layer 12 to the flat surface 131 of the PET bottom plate 13 (ethylene-vinyl acetate copolymer, ethylene-vinyl acetate copolymer) adhesive layer 14. With the concave-convex structure of the PET film 11 and the reflection of the aluminum layer 12 under the PET film 11, the multi-layer substrate 1 can show three-dimensional lines, and at the same time have a high-brightness visual effect. To increase the color of the multi-layer substrate 1 Change, the pattern color layer can be set in the concave portion 112 of the PET film 11, and then the PU protective layer can be set on the surface where the pattern color layer is set, so as to prevent the pattern color layer from falling off.

Although the multi-layer substrate 1 disclosed in the aforementioned utility model can produce a bright visual effect through the aluminum layer 12, no matter whether the aluminum layer 12 is formed by electroplating, evaporation or sputtering, a processing step is required, so its manufacturing The cost is high, and the cooperation between the aluminum layer 12 and the PET film 11 can only produce a bright visual effect. To form a pattern, it is necessary to set a pattern color layer in the concave portion 112 of the PET film 11, and then use the PU layer to To protect the pattern color layer, the manufacturing steps of the aforementioned utility model are cumbersome and the manufacturing cost is relatively high.

And Fig. 2 is China Taiwan announcement No. M306931 utility model, discloses a kind of decorative panel 2 with logical light pattern, this decorative panel 2 comprises: a permeable plastic sheet 21, above-mentioned plastic sheet 21 has a The top surface 211 of the pattern and at least one window hole 213 passing through the top surface 211 and a bottom surface 212, the decorative panel 2 also includes: an upper ink layer 22 above the top surface 211, an upper ink layer 22 The upper gold oil layer 23 , a protective layer 24 for protecting the gold oil layer 23 , a background ink layer 25 under the bottom surface 212 of the plastic sheet 21 , and an adhesive layer 26 at the bottom of the background ink layer 25 . The upper ink layer 22 and the background ink layer 25 are used to express colors and graphics, and the design of the gold oil layer 23 and the protective layer 24 can improve the durability of the upper ink layer 22 and produce a bright visual effect at the same time. In the past, although the decorative panel 2 with logical light lines has better color variability and brightness, its manufacturing process is quite complicated, and each manufacturing process requires precise alignment, so the manufacturing process is relatively difficult.

Contents of the invention

The object of the present invention is to provide a cured film with three-dimensional lines that has a simple manufacturing process and can produce colorful effects.

The cured film of the present invention includes: a substrate layer and a three-dimensional texture layer combined on the substrate layer, the three-dimensional texture layer includes at least one dispersion region that allows incident light to produce a light splitting effect and at least one that allows incident light to diffuse Diffuse area of the effect.

The dispersion area of the cured film of the present invention includes a plurality of protrusions arranged in a regular manner, and the diffusion area includes a plurality of irregular diffusion protrusions, and the protrusion height of the diffusion protrusions is greater than the protrusions of the dispersion area. The protruding height of the bar, the dispersion region can also be a plurality of prismatic columns arranged in a regular manner.

The protruding height of the protruding strips of the cured film of the present invention is between 1 μm and 20 μm, the distance between adjacent protruding strips is between 2 μm and 30 μm, and the protruding height of the diffusing protruding surface of the diffusing region and the above-mentioned The height difference of the protruding heights of the protrusions is preferably between 2 μm and 10 μm, most preferably between 3 μm and 7 μm.

In the present invention, the cross-section of the protrusions of the cured film is selected from the group consisting of triangle, arc, semicircle and trapezoid.

According to the cured film with three-dimensional lines in the present invention, the size and protrusion height of the diffusion surface in the diffusion area are irregular.

According to the cured film with three-dimensional lines in the present invention, the protruding height of the prismatic columns is between 1 μm and 20 μm, and the difference between the protruding height of the diffusing surface of the diffusing area and the protruding height of the prismatic columns The height difference is between 2 μm and 10 μm.

The substrate layer of the cured film of the present invention is selected from light-transmitting polycarbonate and polyethylene terephthalate polyester, and the three-dimensional pattern layer is made of ultraviolet glue light hardening resin, and the ultraviolet glue light hardening resin is selected from From acrylic resins, epoxy resins, acrylic-epoxy resins and polyurethane resins with a hardness greater than 1H.

The beneficial effect of the present invention lies in that: the three-dimensional texture of the cured film can produce different visual changes by setting the dispersion region and the diffusion region that have different refraction effects on the incident light on the three-dimensional texture layer. Since the present invention only uses the concave-convex structure to achieve the effect of setting patterns and generating light, it does not need to specially arrange other light-reflecting layers or pattern layers during manufacture, and has the effect of simple manufacturing process.

Description of drawings

Fig. 1 is a partial sectional schematic diagram of the utility model No. M286119 of the Taiwan Announcement of China;

Fig. 2 is a partial cross-sectional schematic diagram of the utility model No. M306931 of the Taiwan Announcement of China;

Fig. 3 is a schematic partial top view of the first preferred embodiment of the cured film of the present invention;

Fig. 4 is a reference diagram of a state of use of the first preferred embodiment, showing the relative relationship between the cured film and an object, an ink layer, and an adhesive layer;

Fig. 5 is a partial top view of the first preferred embodiment;

Fig. 6 is a partial cross-sectional schematic view of a second preferred embodiment of the cured film of the present invention;

Fig. 7 is a partial cross-sectional schematic view similar to Fig. 6, showing a third preferred embodiment of the cured film of the present invention; and

Fig. 8 is a partial perspective view of the fourth preferred embodiment of the cured film of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same numerals.

Referring to Fig. 3, Fig. 4, and Fig. 5, the first preferred embodiment of the hardened film 3 of the present invention can be combined on an object 41 by using the technology of in-mold inlay, and the object 41 can be a shell or panel of a home appliance, a furniture decoration In order to increase the variability of colors or patterns, an ink layer 42 can be formed on the side of the cured film 3 that is expected to be combined with the object 41 before the combination, and an adhesive layer 42 can be applied. knot layer43. And this cured film 3 comprises: a substrate layer 31 for the ink layer 42 to adhere to and a three-dimensional pattern layer 32 molded on the substrate layer 31, in the present embodiment, the substrate layer 31 can be made of light-transmitting polyethylene terephthalate Formic acid ethylene glycol polyester (Polyethyleneterephthalate, referred to as PET) or polycarbonate (Polycarbonate, referred to as PC) integral molding.

The three-dimensional pattern layer 32 is a kind of ultraviolet (ultraviolet, UV) glue hardening resin with scratch resistance and antifouling properties, such as: acrylic (acrylic) resin, epoxy (epoxy) resin, acrylic-ring Oxygen resin, polyurethane (polyurethane) resin, etc., in order to achieve better scratch resistance, the material selection of the three-dimensional texture layer 32 is preferably with a hardness greater than 1H, and the hardness described here is to use The pencil hardness tester produced by Elcometer company, model 3086, is tested according to JIS K 5600 standard. The three-dimensional texture layer 32 includes a plurality of stepped and obliquely extending diffusion regions 321 and a dispersion region 322 surrounding the diffusion regions 321 and having a light splitting effect. In this embodiment, each diffusion area 321 has a plurality of contiguous but irregular diffusion protrusions 323, that is, in this embodiment, the diffusion area 321 is a rectangular connected figure, but In terms of design, it can also be various characters, graphics, lines, etc., and the size and height of the diffused convex surface 323 of the diffused area 321 are different. Therefore, when the incident light is projected on the diffused area 321 , will produce irregular diffusion phenomenon, so that the incident light cannot be concentrated and presents the visual effect of gray scale fogging.

The dispersion region 322 of this embodiment includes a plurality of protruding strips 324 arranged at regular intervals along the length direction and having the same height. Each protruding strip 324 has two inclined surfaces 325 spaced apart at the bottom and a connection at the top of the inclined surfaces 325. The arc connection surface 326 between the edges. Since each protrusion 324 of the dispersion region 322 in this embodiment is a regular structure, when the incident light hits one of the inclined surfaces 325 of the protrusion 324, the incident light will be regularly refracted by the other inclined surface 325 and A light-splitting effect is produced, so the dispersion region 322 of this embodiment can produce a colorful effect due to the light-splitting of the incident light.

According to the research results of the inventors, in order to produce a better contrast between the diffusion area 321 and the dispersion area 322, the distance P between the top edges of the arc connecting surfaces 326 of the adjacent protrusions 324 of the dispersion area 322 in this embodiment Preferably, it is 2 μm to 30 μm, and more preferably 2 μm to 15 μm, and the protruding height H1 of the protrusion 324 is preferably 1 μm to 20 μm. As for the protrusion height H2 of the diffusion convex surface 323 of the diffusion region 321 in this embodiment, it is greater than the protrusion height H1 of the protrusion 324, and the height difference between the protrusion height H2 and the protrusion height H1 is preferably 2 μm to 10 μm. , and 3 μm to 7 μm is better. That is to say, in the design of the first preferred embodiment of the present invention, the higher the protrusion height H2 of the diffused convex surface 323 of the diffused area 321, the better the diffused effect, that is, the atomized effect The more obvious, in this way, a more obvious contrast can be produced with the relatively low-height dispersion region 322 .

Certainly, the dispersion region 322 and the diffusion region 321 of this embodiment can form various decorative patterns such as weaving and logic, or patterns such as trademarks and leather patterns, or can be text collocations, which can also be generated by using height differences. Different lighting effects will not be illustrated with graphics one by one here. In addition, the smaller the scale of the distance P in this embodiment, the more visible the light-splitting effect can be produced, but the smaller the scale, the more limited the output and processing will be. The range limitation of the protrusion height H1 is mainly considered by the light-splitting effect and processing tools, and the range limitation of the protrusion height H2 is mainly considered by the generation of the diffusion function and the application characteristics of the hardened film 3 .

In this embodiment, when the hardened film 3 is manufactured, the substrate layer 31 is first formed, and then the ultraviolet curable resin is coated on the surface of the substrate layer 31, and then batch production or continuous production is performed with a flat mold or a roller mold. . Taking continuous manufacturing as an example, in this embodiment, micro-engraving technology is used to set concave-convex lines on the surface of a roller mold relative to the dispersion area 322 and the diffusion area 321. When the roller mold is rolled over the ultraviolet glue While hardening the resin coating, irradiate the ultraviolet light curing resin coating from the back side with ultraviolet light. After the microstructure of the ultraviolet light curing resin coating is cured and formed, the production of the cured film 3 of this embodiment is completed. In order to improve the variability of the color and pattern of the product, this embodiment can use printing technology to print the ink layer 42 on the bottom of the substrate layer 31, and coat the adhesive layer 43 on the bottom of the ink layer 42, and finally use in-mold embedding The combination is completed by combining the aforementioned combination on the object 41 .

When the light is projected onto the surface of the cured film 3, the incident light that reaches the irregular diffusion area 321 cannot be concentrated, so it will produce a foggy visual effect, and the incident light that is projected into the regular dispersion area 322, after passing through the sudden The refraction of the inclined surface 325 of the bar 324 will produce a colorful effect of splitting light. Since the cured film 3 in this embodiment is completely embossed with a mold with a very simple process to form areas with different shades, and produces light splitting and atomization effects, the cured film 3 in this embodiment indeed has the effect of a simple process. In addition, since the diffusion area 321 and the dispersion area 322 of this embodiment are made of wear-resistant and anti-fouling UV glue light hardening resin, the pattern formed in this embodiment is also not easy to be damaged.

In particular, since the substrate layer 31 and the three-dimensional texture layer 32 of this embodiment are all made of light-transmitting materials, the cured film 3 can not only protect the ink layer 42, but also the pattern of the ink layer 42 can be formed by the cured film 3. It can be seen that the pattern of the aforementioned ink layer 42 combined with the dispersion region 322 capable of producing colorful effects and the diffuse region 321 capable of producing fogging effects will produce excellent color variability and bright visual effects.

Referring to Fig. 6 and Fig. 7, the structure of the second and third preferred embodiments of the cured film 3 of the present invention is roughly similar to that of the first embodiment, except that the protrusion of the cured film 3 of the second preferred embodiment is The strip 324, in addition to having two inclined surfaces 325, also has a ridge line 327 connected between the top edges of the inclined surfaces 325, and the protruding strip 324 of the cured film 3 in the third preferred embodiment has a protruding spherical surface 328. That is to say, viewed from the cross section, the protrusion 324 of the first preferred embodiment is a triangle with a top edge arc, the second preferred embodiment is a triangle with a sharp top edge, and the third preferred embodiment is a half Circular, the cross-section can also be trapezoidal, arc-shaped, etc., but in terms of light splitting effect, the sharp triangle in the second embodiment is preferred. Since the protruding strips 324 in the second and third preferred embodiments of the present invention are regular strip-shaped structures, the above-mentioned embodiments can also produce the effect of refracting and splitting the incident light.

Referring to Fig. 8, the structure of the fourth preferred embodiment of the cured film 3 of the present invention is similar to that of the first embodiment, so it also includes a base layer 31 and a three-dimensional texture layer 32 above the base layer 31, the three-dimensional The textured layer 32 also has at least one diffusion area 321 and at least one dispersion area 322. The difference between this embodiment and the first embodiment is that the dispersion area 322 of the fourth preferred embodiment has a plurality of prisms arranged neatly and densely. The column 320, since the prismatic column 320 also has the effect of splitting the incident light, the fourth preferred embodiment of the present invention also has the effect described in the first embodiment.

To sum up, the hardened film 3 of the present invention can not only be shaped by a simple process, but also can use triangular or semicircular protruding strips 324 or regularly arranged prismatic columns 320 to produce light-splitting effects. The above-mentioned light-splitting The effect combined with the atomization effect produced by the diffusion area 321 can indeed make the visual effect of the entire cured film 3 more obvious and varied.

Claims (7)

1. A cured film with three-dimensional textures, comprising: a substrate layer and a three-dimensional texture layer combined on the substrate layer; It is characterized in that the three-dimensional texture layer includes at least one dispersion area that can produce a spectroscopic effect for incident light and at least one diffusion area that can produce a diffuse effect for incident light, and the dispersion area includes a plurality of protrusions arranged in a regular manner , and the diffusion region includes a plurality of irregular diffusion protrusions, the protrusion height of the diffusion protrusions is greater than the protrusion height of the protrusions of the dispersion region, and the protrusion height of the protrusions is between 1 μm and 20 μm The height difference between the protruding height of the diffusing protruding surface of the diffusing area and the protruding height of the protrusion is between 2 μm and 10 μm. 2 . The cured film with three-dimensional textures according to claim 1 , wherein the height difference between the protrusion height of the diffusion surface of the diffusion area and the protrusion height of the protrusions is between 3 μm and 7 μm. 3 . 3 . The cured film with three-dimensional lines according to claim 1 , wherein the distance between adjacent protrusions among the protrusions is between 2 μm and 30 μm. 4 . 4 . The cured film with three-dimensional lines according to any one of claims 1 to 3 , wherein the cross-section of the protrusions is selected from the group consisting of triangle, arc, semicircle and trapezoid. 5. The cured film with three-dimensional texture according to claim 1, wherein the substrate layer is selected from light-transmitting polycarbonate and polyethylene terephthalate, and the three-dimensional texture layer is made of ultraviolet glue. It is composed of hardening resin, and the ultraviolet light curing resin is selected from acrylic resin, epoxy resin, acrylic-epoxy resin and polyurethane resin with hardness greater than 1H. 6. A cured film with three-dimensional textures, comprising: a substrate layer and a three-dimensional texture layer combined on the substrate layer; It is characterized in that the three-dimensional texture layer includes at least one dispersion area that can produce a spectroscopic effect for incident light and at least one diffusion area that can produce a diffuse effect for incident light, and the dispersion area includes a plurality of prisms arranged in a regular manner column, the diffusion area includes a plurality of irregular diffusion protrusions with a protrusion height higher than that of the prismatic column, the size and protrusion height of the diffusion protrusions in the diffusion area are irregular, and the The protruding height of the prismatic columns is between 1 μm and 20 μm, and the height difference between the protruding heights of the diffusing convex surface of the diffusion region and the protruding height of the prismatic columns is between 2 μm and 10 μm. 7. The cured film with three-dimensional texture according to claim 6, wherein the substrate layer is selected from light-transmitting polycarbonate and polyethylene terephthalate, and the three-dimensional texture layer is glued by ultraviolet rays. It is composed of hardening resin, and the ultraviolet light curing resin is selected from acrylic resin, epoxy resin, acrylic-epoxy resin and polyurethane resin with hardness greater than 1H.

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