Environment-friendly degradable laser lining paper

Abstract

The utility model discloses environment-friendly degradable laser lining paper which comprises a base paper layer, a first bonding layer arranged at the top end of the base paper layer, an aluminized layer arranged at the top end of the first bonding layer, a laser layer arranged at the top end of the aluminized layer, a transfer coating arranged at the top end of the laser layer, and a colored ink layer arranged at the top end of the transfer coating. The ultraviolet-proof layer and the flame-retardant layer are arranged at the top ends of the color ink layer and the hollow-out layer, the waterproof layer is arranged at the bottom end of the base paper layer, and the ultraviolet-proof layer is made of an inorganic ultraviolet screening agent, can absorb a large amount of ultraviolet rays and has an excellent ultraviolet screening effect; the laser layer and the color ink layer can gradually fade under long-time irradiation of ultraviolet rays, the flame-retardant layer is made of transparent polyurethane, transparency can be kept, meanwhile, good flame-retardant performance is achieved, the waterproof layer is made of a polypropylene film, the structure of the base paper layer can be prevented from being damaged after the base paper layer encounters water, and the service life of the laser layer and the color ink layer is prolonged. Therefore, the purpose of keeping the color of the laser lining paper for a long time is achieved.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, and in particular to an environmentally friendly and biodegradable laser lining paper. Background Technology

[0002] Laser-etched inner liner paper is a special packaging material mainly used for commodity packaging, especially the inner packaging of products such as cigarettes. It serves as a specialized liner material that seals, supports, and filters during the packaging process. Through the application of special laser treatment technology to the paper surface, it produces colorful, anti-counterfeiting patterns or text under light. This liner paper not only enhances the packaging effect but also strengthens the anti-counterfeiting performance, effectively preventing the appearance of counterfeit and substandard products. The laser patterns or text on the inner liner paper have high anti-counterfeiting properties, making them difficult to copy and forge, effectively protecting the intellectual property rights of the product and consumer rights. The laser patterns or text produce colorful and unpredictable effects under light, enhancing the packaging's grade and appeal.

[0003] To this end, Chinese patent application number CN202416068U discloses an aluminized laser holographic inner lining paper for cigarette box packaging. From bottom to top, it includes a substrate, a laser anti-counterfeiting layer, an aluminized layer, and a protective layer. The laser anti-counterfeiting layer is bonded to the substrate via a composite adhesive layer, and the aluminized layer is located between the laser anti-counterfeiting layer and the protective layer. This invention saves a significant amount of aluminum resources by using only an aluminized layer instead of aluminum foil. The aluminized layer not only has a metallic texture but is also recyclable and biodegradable, preventing environmental pollution and meeting environmental protection requirements. Furthermore, it reduces production costs and simplifies the production process. Because water-soluble adhesive is used, the potential harm to human health from residual additives in the original coating is eliminated, thus meeting environmental protection requirements.

[0004] While current laser-printed inner lining paper can generally meet people's needs, some problems still exist, as detailed below:

[0005] 1. The problem of laser lining paper not being able to retain its color for a long time: Laser lining paper is often used as packaging paper for goods, attracting customers' attention with its unique laser effect. However, under ultraviolet radiation, the decomposition of ink or coating on the paper will be accelerated, causing the color to fade. At the same time, after the paper and ink and other materials are in contact with oxygen in the air for a long time, an oxidation reaction will occur, which will affect the stability of the color.

[0006] 2. The problem of the difficulty in making laser lining paper environmentally friendly and biodegradable. Traditional lining paper may generate a lot of waste during production and use. The materials in this waste are difficult to degrade in the natural environment and will cause long-term pollution to soil, water sources and ecosystems. At the same time, most existing laser lining papers are produced by laser transfer film through dry and wet lamination processes, which have significant defects in terms of environmental protection, efficiency and energy saving. Utility Model Content

[0007] The purpose of this invention is to provide an environmentally friendly and biodegradable laser lining paper to solve the shortcomings of existing laser lining papers, such as difficulty in maintaining color for a long time and difficulty in being environmentally friendly and biodegradable.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an environmentally friendly and biodegradable laser lining paper, comprising a base paper layer;

[0009] The top of the base paper layer is provided with a first adhesive layer, the top of the first adhesive layer is provided with an aluminum plating layer, the top of the aluminum plating layer is provided with a laser layer, the top of the laser layer is provided with a transfer coating layer, and the top of the transfer coating layer is provided with a color ink layer.

[0010] The top of the color ink layer is provided with a hollow layer, and the top of the hollow layer is provided with a barrier structure; the barrier structure includes a flame retardant layer, an ultraviolet protection layer and a waterproof layer, and the flame retardant layer is provided at the top of the hollow layer.

[0011] The flame-retardant layer is provided with an ultraviolet-resistant layer at its top, the waterproof layer is provided at the bottom of the base paper layer, and the barrier structure is provided with a protective structure at its top.

[0012] In use, computer dot matrix lithography, 3D true-color holography, and multi-dimensional dynamic imaging technologies are first employed to transfer a holographic image with rainbow dynamics and three-dimensional effects to the base paper layer through molding. Then, advanced radiation curing technology is used to transfer the laser carrier onto the aluminum-plated layer, achieving a combination of the aluminum-plated layer and the laser layer. The overall operation is more environmentally friendly and efficient. A perforated layer with through holes is added to the top of the color ink layer. The shape of the through holes can be changed according to product requirements to increase the variation effect of the laser. Multiple layers of barrier and protective materials slow down the damage of ultraviolet rays and the oxidation rate of pigments, and give the laser liner paper a certain degree of water resistance and flame retardancy, effectively extending the service life of the laser liner paper and expanding its application range.

[0013] Furthermore, the base paper layer is made of coniferous pine pulp, which has good flexibility and folding resistance, while also being derived from natural plants, thus possessing good biodegradability and environmental friendliness.

[0014] Furthermore, the hollow layer has through holes arranged at equal intervals inside, which can be changed in shape according to product requirements to increase the variation effect of laser.

[0015] Furthermore, the flame-retardant layer is made of transparent polyurethane, which can maintain transparency while having good flame-retardant properties.

[0016] Furthermore, the UV-protective layer is made of an inorganic UV-blocking agent, which can slow down the fading of the laser layer and the ink layer under prolonged UV exposure.

[0017] Furthermore, the waterproof layer is made of polypropylene film, which can prevent the structure of the base paper layer from being damaged when exposed to water.

[0018] Furthermore, the protective structure includes a second adhesive layer, a first protective layer, and a second protective layer. The second adhesive layer is disposed on top of the UV-resistant layer, the first protective layer is disposed on top of the second adhesive layer, and the second protective layer is disposed on top of the first protective layer, thereby protecting the surface of the laser lining paper and increasing its abrasion resistance.

[0019] Furthermore, both the first and second adhesive layers are made of bio-based adhesives, which have excellent biodegradability and environmental friendliness.

[0020] Furthermore, the first protective layer is a nano-coating, and the second protective layer is a transparent polyvinyl chloride coating, which can resist scratches and abrasions, and also has high transparency and gloss, maintaining the visual effect of the laser lining paper.

[0021] This utility model provides an environmentally friendly and biodegradable laser lining paper, the advantages of which are: by setting an anti-ultraviolet layer and a flame-retardant layer at the top of the color ink layer and the perforated layer, and setting a waterproof layer at the bottom of the base paper layer, the anti-ultraviolet layer is made of an inorganic ultraviolet shielding agent, which can absorb a large amount of ultraviolet rays and has excellent ultraviolet shielding effect, which can slow down the gradual fading of the laser layer and the color ink layer under long-term ultraviolet radiation; the flame-retardant layer is made of transparent polyurethane, which can maintain transparency while having good flame-retardant properties; and the waterproof layer is made of polypropylene film, which can prevent the structure of the base paper layer from being damaged when exposed to water, thereby achieving the purpose of long-term color preservation of the laser lining paper.

[0022] By employing advanced radiation curing technology during manufacturing, the laser carrier is transferred onto the aluminized layer, achieving a bond between the aluminized and laser layers. This replaces the original dry and wet lamination processes, making it more environmentally friendly and efficient. Meanwhile, the base paper layer uses coniferous pine pulp as raw material, which has good flexibility and folding resistance. The material is derived from natural plants, making it highly biodegradable and environmentally friendly. Both the first and second adhesive layers use bio-based adhesives made from renewable resources such as natural plants, animals, or microorganisms, exhibiting excellent biodegradability and environmental friendliness. This achieves the goal of making the laser lining paper environmentally friendly and biodegradable. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a three-dimensional exploded structural diagram of the present invention;

[0025] Figure 3 This is a frontal cross-sectional view of the present invention.

[0026] Figure 4 This is a top view cross-sectional structural diagram of the present invention;

[0027] Figure 5 This is a partial cross-sectional view of the protective structure of this utility model.

[0028] The reference numerals in the figure are as follows: 1. Base paper layer; 2. First adhesive layer; 3. Aluminum plating layer; 4. Laser layer; 5. Transfer coating; 6. Color ink layer; 7. Perforated layer; 8. Through hole; 9. Barrier structure; 901. Flame retardant layer; 902. UV protection layer; 903. Waterproof layer; 10. Protective structure; 1001. Second adhesive layer; 1002. First protective layer; 1003. Second protective layer. Detailed Implementation

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Please see Figures 1-5 One embodiment of this utility model is an environmentally friendly and biodegradable laser lining paper, comprising a base paper layer 1.

[0031] The base paper layer 1 is made of coniferous pine pulp. A first adhesive layer 2 is provided at the top of the base paper layer 1. An aluminum plating layer 3 is provided at the top of the first adhesive layer 2. A laser layer 4 is provided at the top of the aluminum plating layer 3. A transfer coating layer 5 is provided at the top of the laser layer 4. A color ink layer 6 is provided at the top of the transfer coating layer 5.

[0032] The top of the ink layer 6 is provided with a hollow layer 7, and through holes 8 are provided inside the hollow layer 7. The through holes 8 are arranged at equal intervals inside the hollow layer 7.

[0033] See attached document Figure 1-4As shown, advanced radiation curing technology is used during manufacturing to transfer the laser carrier onto the aluminum-plated layer 3, achieving the bonding of the aluminum-plated layer 3 and the laser layer 4. This replaces the original dry and wet lamination processes, making it more environmentally friendly and efficient. Meanwhile, the base paper layer 1 uses coniferous pine pulp as raw material, which has good flexibility and folding resistance. The material is derived from natural plants and has good biodegradability and environmental friendliness. The first adhesive layer 2 and the second adhesive layer 1001 both use bio-based adhesives, which are made from renewable resources such as natural plants, animals, or microorganisms, and have excellent biodegradability and environmental friendliness.

[0034] The top of the perforated layer 7 is provided with a barrier structure 9, which includes a flame-retardant layer 901, a UV-protective layer 902, and a waterproof layer 903. The flame-retardant layer 901 is located at the top of the perforated layer 7 and is made of transparent polyurethane. The UV-protective layer 902 is located at the top of the flame-retardant layer 901 and is made of inorganic UV shielding agent. The waterproof layer 903 is located at the bottom of the base paper layer 1 and is made of polypropylene film.

[0035] See attached document Figure 1-3 As shown, an anti-ultraviolet layer 902 and a flame-retardant layer 901 are provided at the top of the color ink layer 6 and the perforated layer 7, and a waterproof layer 903 is provided at the bottom of the base paper layer 1. The anti-ultraviolet layer 902 is made of an inorganic ultraviolet shielding agent, which can absorb a large amount of ultraviolet rays and has excellent ultraviolet shielding effect, which can prevent the laser layer 4 and the color ink layer 6 from fading gradually under long-term ultraviolet radiation. The flame-retardant layer 901 is made of transparent polyurethane, which can maintain transparency while having good flame-retardant properties. The waterproof layer 903 is made of polypropylene film, which can prevent the structure of the base paper layer 1 from being damaged when exposed to water.

[0036] The top of the barrier structure 9 is provided with a protective structure 10. The protective structure 10 includes a second adhesive layer 1001, a first protective layer 1002, and a second protective layer 1003. The second adhesive layer 1001 is provided on the top of the UV-protective layer 902. The first adhesive layer 1001 and the second adhesive layer 1001 are both made of bio-based adhesive. The top of the second adhesive layer 1001 is provided with the first protective layer 1002, and the top of the first protective layer 1002 is provided with the second protective layer 1003. The first protective layer 1002 is a nano-coating, and the second protective layer 1003 is a transparent polyvinyl chloride coating.

[0037] See attached document Figure 1-3 and attached Figure 5As shown, a first protective layer 1002 and a second protective layer 1003 are bonded to the outermost layer of the laser lining paper via a second adhesive layer 1001. The first protective layer 1002 is a nano-coating, whose tiny nanoparticles can fill the tiny unevenness of the material surface to form a smooth and wear-resistant protective film, while maintaining the transparency and gloss of the laser lining paper. The second protective layer 1003 is a transparent polyvinyl chloride coating, which has excellent chemical corrosion resistance and wear resistance, and can resist scratches and wear to a certain extent. It also has high transparency and gloss, which can maintain the visual effect of the laser lining paper.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmentally friendly and biodegradable laser liner paper, comprising a base paper layer (1); Its features are: The top of the base paper layer (1) is provided with a first adhesive layer (2), the top of the first adhesive layer (2) is provided with an aluminum plating layer (3), the top of the aluminum plating layer (3) is provided with a laser layer (4), the top of the laser layer (4) is provided with a transfer coating layer (5), and the top of the transfer coating layer (5) is provided with a color ink layer (6). The top of the color ink layer (6) is provided with a hollow layer (7), and the top of the hollow layer (7) is provided with a barrier structure (9). The barrier structure (9) includes a flame retardant layer (901), an ultraviolet protection layer (902) and a waterproof layer (903). The flame retardant layer (901) is provided at the top of the hollow layer (7). The flame-retardant layer (901) is provided with an ultraviolet-resistant layer (902) at its top, the waterproof layer (903) is provided at the bottom of the base paper layer (1), and the barrier structure (9) is provided with a protective structure (10) at its top.

2. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The base paper layer (1) is made of coniferous pine pulp.

3. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The hollow layer (7) has through holes (8) inside, and the through holes (8) are arranged at equal intervals inside the hollow layer (7).

4. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The flame-retardant layer (901) is made of transparent polyurethane.

5. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The material of the UV-protective layer (902) is an inorganic UV-blocking agent.

6. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The waterproof layer (903) is made of polypropylene film.

7. The environmentally friendly biodegradable laser lining paper according to claim 1, characterized in that: The protective structure (10) includes a second adhesive layer (1001), a first protective layer (1002), and a second protective layer (1003). The second adhesive layer (1001) is disposed on the top of the UV-protective layer (902), the first protective layer (1002) is disposed on the top of the second adhesive layer (1001), and the second protective layer (1003) is disposed on the top of the first protective layer (1002).

8. The environmentally friendly biodegradable laser lining paper according to claim 7, characterized in that: The first adhesive layer (2) and the second adhesive layer (1001) are both made of bio-based adhesive.

9. The environmentally friendly biodegradable laser lining paper according to claim 7, characterized in that: The first protective layer (1002) is a nano-coating, and the second protective layer (1003) is a transparent polyvinyl chloride coating.

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