A polypropylene decorative film having a three-dimensional wood grain effect

Abstract

The utility model discloses a kind of polypropylene decorative films with three-dimensional wood grain effect, including sequentially connected base film layer, primer layer, effect printing layer, aluminized reflection layer and protective coating from bottom to top, the effect printing layer is provided with a plurality of staggered microprism units arrangement.The utility model produces the sense of stereoscopic stripe and colour by special ink and printing process, and the light reflection effect produced in combination with aluminized reflection layer, different three-dimensional wood grain effect can be produced according to light and shade, perspective shift, satisfy the pursuit of personalized, diversified decorative facing effect of consumer, enrich the application scenario of polypropylene decorative film, improve market competitiveness.

Description

Technical Field

[0001] This disclosure relates to the field of polypropylene decorative film technology, and in particular to a polypropylene decorative film with a three-dimensional wood grain effect. Background Technology

[0002] Polypropylene decorative films are widely used in the furniture and construction industries due to their excellent weather resistance, plasticity, and environmental friendliness, used to beautify the surfaces of various substrates; in particular, wood grain polypropylene decorative films are attracting increasing attention and use in daily life. However, existing polypropylene decorative films have certain limitations in terms of patterns and colors, and are relatively monotonous, lacking a sense of layering and variation, failing to meet people's demands for high-end decorative films with multiple decorative effects.

[0003] In existing printing processes, flat printing or embossing is more common, which can no longer meet people's pursuit of new decorative effects. Nowadays, 3D printing and stereoscopic printing methods have the problems of high printing costs and complex printing processes. The printed patterns are not durable and weather-resistant, and are easy to wear and fade during use, which affects the service life. Utility Model Content

[0004] This disclosure provides a polypropylene decorative film with a three-dimensional wood grain effect to solve the above-mentioned technical problems.

[0005] This disclosure provides a polypropylene decorative film with a three-dimensional wood grain effect, comprising a base film layer, a primer layer, an effect printing layer, an aluminum-plated reflective layer, and a protective coating layer connected sequentially from bottom to top. The effect printing layer contains a plurality of staggered microprism units.

[0006] Preferably, the thickness of the effect printing layer is 15μm-25μm.

[0007] Preferably, the bottom edge width of the microprism unit is 10μm-20μm, and the depth of the microprism unit is 5μm-10μm.

[0008] Preferably, the base film layer is a polypropylene base film layer.

[0009] Preferably, the thickness of the base film layer is 0.12mm-0.14mm.

[0010] Preferably, the aluminum-plated reflective layer is fixed to the surface of the effect printing layer by vacuum evaporation, and / or the thickness of the aluminum-plated reflective layer is 5μm-20μm.

[0011] Preferably, the thickness of the protective coating is 5μm-10μm.

[0012] The main beneficial effects of this disclosure are: 1. This utility model uses special inks and printing processes, combined with the light reflection effect produced by the aluminum-plated reflective layer, to create three-dimensional stripes and patterns. Different three-dimensional wood grain effects can be produced according to the light intensity and viewing angle, satisfying consumers' pursuit of personalized and diversified decorative surface effects, enriching the application scenarios of polypropylene decorative film, and improving market competitiveness. 2. The protective coating raw materials include acrylic resin, mixed solvent, titanium dioxide, silicon dioxide, polyoxysilane, and dispersant. It has good wear resistance, scratch resistance, and stain resistance. The protective coating can achieve a pencil hardness of 2H, a scratch resistance of 1.5N, and a stain resistance of level 5. It can effectively protect the printed layer and aluminum reflective layer on the base layer from damage and improve the service life of the decorative film. 3. The process used in this utility model is simple and different from the complicated 3D printing. It can be achieved through mature processes such as printing and coating, which is suitable for industrialized production and the cost is controllable.

[0013] It should be understood that both the foregoing general description and the following detailed description are for illustrative purposes and do not necessarily limit the scope of this disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of this disclosure. Furthermore, the specification and drawings serve to explain the principles of this disclosure. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the interface structure of a polypropylene decorative film with a three-dimensional wood grain effect according to an embodiment of the present disclosure. Figure 2 This is a schematic diagram of the effect printing layer structure according to an embodiment of the present disclosure; Icons: 1-Protective coating; 2-Aluminum-plated reflective layer; 3-Effect printing layer; 301-Microprism unit; 4-Primer layer; 5-Base film layer. Detailed Implementation

[0016] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0017] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0018] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] Example like Figure 1-2 As shown, this embodiment provides a polypropylene decorative film with a three-dimensional wood grain effect, including a base film layer 5, a primer layer 4, an effect printing layer 3, an aluminum-plated reflective layer 2, and a protective coating layer 1 connected sequentially from bottom to top.

[0021] Among them, the base film layer 5 is a polypropylene base film layer 5, which serves as the base film for the decorative film. A primer layer 4 is coated on the surface of the base film layer 5. The primer layer 4 increases the interfacial viscosity between the base film layer 5 and the effect printing layer 3, providing more bonding sites for the effect printing layer 3 and enabling it to bond well with the base film layer 5. This solves the problem of insufficient adhesion between the printing ink and the polypropylene base film layer 5, resulting in poor printing adhesion. The effect printing layer 3 is printed on the surface of the primer layer 4 using special inks and printing processes. Multiple staggered micro prism units 301 are printed within the effect printing layer 3 through the printing process. The prism unit 301 creates a textured, three-dimensional visual effect with stripes. An aluminum-plated reflective layer 2 is formed on the surface of the effect printing layer 3 by vacuum evaporation. The light reflected by the nano-aluminum metal particles presents an optical effect of alternating light and dark under different angles and lighting conditions, increasing the visual three-dimensionality. A protective coating 1 is applied to the surface of the vacuum-plated aluminum reflective layer 2. The protective coating 1 has good wear resistance and scratch resistance. The pencil hardness of the protective coating 1 can reach 2H, the scratch resistance can reach 1.5N, and the stain resistance can reach level 5, protecting the aluminum-plated reflective layer 2 and the effect printing layer 3 from wear.

[0022] Furthermore, the thickness of the effect printing layer 3 is 15μm-25μm. Furthermore, the bottom edge width of the microprism unit 301 is 10μm-20μm, and the depth of the microprism unit 301 is 5μm-10μm. The bottom edge of the microprism unit 301 is in the positive direction, with a width of 10μm-20μm and a depth of 5μm-10μm, presenting a textured, three-dimensional striped effect.

[0023] Furthermore, the thickness of the base film layer 5 is 0.12mm-0.14mm.

[0024] Furthermore, the thickness of the aluminum-plated reflective layer 2 is 5μm-20μm. Compared with other metal reflective layers, the nanoparticles of the aluminum-plated reflective layer 2 can be uniformly coated on the microprism units 301 of the three-dimensional microstructure of the three-dimensional wood grain printing layer through vacuum evaporation. Unlike ordinary metal reflective layers that can only reflect light in one direction, the aluminum-plated reflective layer 2 presents a visual effect of alternating light and dark under different viewing angles and different lighting conditions, which increases the three-dimensionality and enriches the visual appeal of the decorative film.

[0025] Furthermore, the thickness of the protective coating 1 is 5μm-10μm. The raw materials for the protective coating 1 include acrylic resin, mixed solvent, titanium dioxide, silicon dioxide, polyoxysilane, and dispersant. After being combined in a certain proportion, they are coated on the surface of the aluminum-plated reflective layer 2. After being cured by ultraviolet lamp, a protective coating 1 with good wear resistance, scratch resistance, and stain resistance is formed. The power of the ultraviolet curing equipment is 80-120W / cm, and the curing time is 10s-25s.

[0026] The working principle of this invention is as follows: First, a polypropylene base film layer 5 is prepared. A primer layer 4 is then coated onto the surface of the polypropylene base film layer 5. An effect printing layer 3 is then printed onto the surface of the primer layer 4. An aluminum-plated reflective layer 2 is then coated onto the surface of the effect printing layer 3 via vacuum evaporation. Finally, a protective coating 1 is applied to the surface of the aluminum-plated reflective layer 2. This results in a polypropylene decorative film with a three-dimensional wood grain effect. This decorative film forms a textured, three-dimensional wood grain by setting multiple staggered microprism units 301 in the effect printing layer 3. Furthermore, the aluminum plating layer reflects light, producing different wood grain effects depending on the light intensity and viewing angle, providing consumers with a new choice for decorative films.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A polypropylene decorative film with a three-dimensional wood grain effect, characterized in that, It includes a base film layer, a primer layer, an effect printing layer, an aluminum-plated reflective layer, and a protective coating layer connected sequentially from bottom to top. The effect printing layer contains multiple staggered microprism units.

2. The polypropylene decorative film with a three-dimensional wood grain effect according to claim 1, characterized in that, The thickness of the effect printing layer is 15μm-25μm.

3. The polypropylene decorative film with a three-dimensional wood grain effect according to claim 2, characterized in that, The bottom edge width of the microprism unit is 10μm-20μm, and the depth of the microprism unit is 5μm-10μm.

4. The polypropylene decorative film with a three-dimensional wood grain effect according to claim 1, characterized in that, The base film layer is a polypropylene base film layer.

5. A polypropylene decorative film with a three-dimensional wood grain effect according to claim 4, characterized in that, The thickness of the base film layer is 0.12mm-0.14mm.

6. The polypropylene decorative film with a three-dimensional wood grain effect according to claim 1, characterized in that, The aluminum-plated reflective layer is fixed to the surface of the effect printing layer by vacuum evaporation, and / or the thickness of the aluminum-plated reflective layer is 5μm-20μm.

7. The polypropylene decorative film with a three-dimensional wood grain effect according to claim 1, characterized in that, The thickness of the protective coating is 5μm-10μm.

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