Paper-plastic composite film for luxury packaging

Abstract

The utility model discloses a paper-plastic composite film for luxury packaging. The paper-plastic composite film is sequentially provided with a scratch-resistant coating, a matte PLA layer, a bonding layer and a paper layer from outside to inside, the matt PLA layer is composed of a first PLA matt surface layer, a PLA matt core layer and a second PLA matt surface layer, and the first PLA matt surface layer and the second PLA matt surface layer are both double-sided matt two-way stretch polylactic acid films. According to the utility model, the surface scratch resistance is improved, the surface hardness is improved by the scratch-resistant coating, and the scratch-resistant coating is combined with the matte PLA layer to form a composite protection structure, so that the scratch damage in the transportation and use processes can be effectively prevented; the outer surface of the film can be subjected to surface treatment such as embossing, gold stamping or laser engraving. According to the composite film, the surface scratch resistance is improved, the visual effect is optimized, and the composite film is environmentally friendly, good in mechanical performance, suitable for various luxury packaging scenes and capable of meeting the high-end market requirement.

Description

Technical Field

[0001] This utility model belongs to the field of film packaging technology, specifically relating to a paper-plastic composite film for luxury goods packaging. Background Technology

[0002] Luxury packaging is not only the external protection of goods but also a crucial carrier of brand image. It needs to meet extremely high standards in both visual appeal and physical performance to highlight the product's high-end quality and uniqueness. Visually, luxury packaging requires unique textures and finishes, such as matte, high-gloss, and textured effects, to attract consumers' attention and enhance product appeal. In terms of physical performance, luxury packaging needs excellent scratch resistance, tear resistance, and water resistance. Therefore, luxury packaging demands extremely high-quality materials, requiring not only superior visual effects (such as matte, high-gloss, and textured finishes) but also excellent physical properties (such as scratch resistance, tear resistance, and water resistance). Furthermore, environmental friendliness is also a crucial factor for modern luxury packaging; with increasing environmental awareness, consumers are demanding more environmentally friendly packaging.

[0003] Paper-plastic composites combine the texture of paper with the functionality of plastic, making them an ideal choice for luxury packaging. However, traditional paper-plastic composites mostly use non-degradable plastics, which puts significant pressure on the environment, and there is still room for improvement in terms of scratch resistance, environmental friendliness, and visual appeal. Although some biodegradable materials such as polylactic acid (PLA) have been applied in the packaging field, their overall performance and cost control after being combined with paper still face challenges.

[0004] Therefore, it is essential to develop a paper-plastic composite film for luxury goods packaging, suitable for packaging boxes, bags, and outer packaging of products such as high-end cosmetics, jewelry, watches, and wines, to meet the market demand for environmental protection concepts in luxury goods. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a paper-plastic composite film for luxury packaging, which solves the defects of existing paper-plastic composite materials in terms of scratch resistance, environmental protection and visual effect.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a paper-plastic composite film for luxury goods packaging, which is provided with a scratch-resistant coating, a matte PLA layer, an adhesive layer and a paper layer from the outside to the inside; the matte PLA layer is composed of a first matte PLA surface layer, a matte PLA core layer and a second matte PLA surface layer, and the first matte PLA surface layer, the matte PLA core layer and the second matte PLA surface layer are all double-sided matte biaxially oriented polylactic acid films.

[0007] In a preferred embodiment of this utility model, the scratch-resistant coating is applied to the outer surface of the first PLA matte surface layer by means of a scratch-resistant paint coating, and the thickness of the scratch-resistant coating is 1-2μm.

[0008] In a preferred embodiment of this utility model, the thickness of the matte PLA layer is 10-30 μm.

[0009] In a preferred embodiment of this utility model, the thickness of both the first matte PLA surface layer and the second matte PLA surface layer is 1-5 μm.

[0010] In a preferred embodiment of this utility model, the corona value of the first matte PLA surface layer and the second matte PLA surface layer is ≥38dyn.

[0011] In a preferred embodiment of this utility model, the adhesive layer is a polyurethane adhesive layer.

[0012] In a preferred embodiment of this utility model, the thickness of the adhesive layer is 0.5-2 μm.

[0013] In a preferred embodiment of this utility model, the paper layer is high-grade art paper or specialty paper.

[0014] In a preferred embodiment of this utility model, the weight of the paper layer is 10-500 g / m². 2 .

[0015] In a preferred embodiment of this utility model, the outer surface of the paper-plastic composite film can be treated with embossing, hot stamping or laser engraving to further enhance the visual effect.

[0016] The paper layer uses high-grade art paper or specialty paper, which has a unique texture and feel, enhancing the visual effect of the packaging; the plastic layer uses a bio-based biodegradable polylactic acid (PLA) film, which is environmentally friendly and has good mechanical properties; the surface of the PLA film is coated with a scratch-resistant coating as a functional coating, which is composed of polyurethane acrylate, nano silica and photoinitiator, to improve surface hardness; the matte PLA layer uses double-sided matte biaxially stretched polylactic acid film to give the material a matte effect and enhance the high-end texture; to further enhance the visual effect, the outer surface of the paper-plastic composite film can be surface treated.

[0017] Compared with the prior art, this technical solution has the following advantages:

[0018] 1. This utility model improves the surface scratch resistance, the scratch-resistant coating improves the surface hardness, and the scratch-resistant coating combined with the matte PLA layer forms a composite protective structure, which can effectively prevent scratch damage during transportation and use.

[0019] 2. This utility model optimizes the visual effect; the matte layer combined with surface treatment technology gives the material a unique texture and aesthetic appeal.

[0020] 3. This utility model is environmentally friendly; the matte PLA layer uses a biodegradable PLA film, which meets the requirements of sustainable development.

[0021] 4. This utility model has good mechanical properties. The composite material has both the texture of paper and the strength of plastic, and is tear-resistant, waterproof and durable.

[0022] 5. This utility model is applicable to various luxury goods packaging scenarios and meets the needs of the high-end market. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a layer structure diagram of the paper-plastic composite film for luxury goods packaging in Example 1.

[0025] Among them, 10-scratch-resistant coating, 20-matte PLA layer, 21-first matte PLA surface layer, 22-matte PLA core layer, 23-second matte PLA surface layer, 30-adhesive layer, 40-paper layer; Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be further described below in conjunction with the accompanying drawings and embodiments. These embodiments may take different forms and should not be construed as limited to the description herein. Throughout the document, the same reference numerals always represent the same elements, and similar reference numerals represent similar elements.

[0027] It should be noted that the terms "inner" refer to the side in contact with the contents, and "outer" refer to the side away from the contents, and should not be construed as a limitation on this utility model.

[0028] A paper-plastic composite film for luxury packaging comprises, from the outside to the inside, a scratch-resistant coating 10, a matte PLA layer 20, an adhesive layer 30, and a paper layer 40. The matte PLA layer 20 consists of a first matte PLA surface layer 21, a matte PLA core layer 22, and a second matte PLA surface layer 23, all of which are double-sided matte biaxially oriented polylactic acid (PLA) films. The scratch-resistant coating 10 is applied to the outer surface of the first matte PLA surface layer 21 using a coating method. The outer surface of the paper-plastic composite film undergoes surface treatments such as embossing, hot stamping, or laser engraving to further enhance the visual effect. The scratch-resistant coating 10 has a thickness of 1-2 μm; the matte PLA layer 20 has a thickness of 10-30 μm; the matte PLA surface layer 20 has a thickness of 1-5 μm; the corona value of the first matte PLA surface layer 21 and the second matte PLA surface layer 23 is ≥38 dyn. The adhesive layer 30 is a polyurethane adhesive layer. The adhesive layer 30 has a thickness of 0.5-2 μm, and the paper layer 40 is high-grade art paper or specialty paper, with a weight of 10-500 g / m³. 2 This film offers high cost-effectiveness, achieving a composite film thickness that is as thin as possible while maintaining scratch resistance, environmental friendliness, and visual appeal, thus reducing production costs and making it more economical and practical, meeting market demands.

[0029] Example 1

[0030] A paper-plastic composite film for luxury goods packaging, such as Figure 1 As shown, from the outside to the inside, a scratch-resistant coating 10, a matte PLA layer 20, an adhesive layer 30, and a paper layer 40 are sequentially arranged. The matte PLA layer 20 consists of a first matte PLA surface layer 21, a matte PLA core layer 22, and a second matte PLA surface layer 23. The first matte PLA surface layer 21, the matte PLA core layer 22, and the second matte PLA surface layer 23 are all double-sided matte biaxially oriented polylactic acid films. The scratch-resistant coating 10 is coated onto the outer surface of the first matte PLA surface layer 21 by roller coating with an acrylic scratch-resistant coating. The outer surface of the paper-plastic composite film is embossed to further enhance the visual effect.

[0031] The scratch-resistant coating 10 has a thickness of 2 μm; the matte PLA layer 20 has a thickness of 25 μm; the first matte PLA surface layer 21 and the second matte PLA surface layer 23 both have a thickness of 3 μm; the corona discharge values ​​of the first matte PLA surface layer 21 and the second matte PLA surface layer 23 are 42 dyn; the adhesive layer 30 is a polyurethane adhesive layer with a thickness of 2 μm; and the paper layer 40 is high-grade art paper with a weight of 300 g / m³. 2 .

[0032] Example 2

[0033] A paper-plastic composite film for luxury goods packaging, such as Figure 1 As shown, from the outside to the inside, a scratch-resistant coating 10, a matte PLA layer 20, an adhesive layer 30, and a paper layer 40 are sequentially arranged. The matte PLA layer 20 consists of a first matte PLA surface layer 21, a matte PLA core layer 22, and a second matte PLA surface layer 23. The first matte PLA surface layer 21, the matte PLA core layer 22, and the second matte PLA surface layer 23 are all double-sided matte biaxially oriented polylactic acid films. The scratch-resistant coating 10 is coated onto the outer surface of the first matte PLA surface layer 21 by roller coating with an acrylic scratch-resistant coating. The outer surface of the paper-plastic composite film undergoes laser engraving surface treatment to further enhance the visual effect.

[0034] The scratch-resistant coating 10 has a thickness of 1 μm; the matte PLA layer 20 has a thickness of 20 μm; the first matte PLA surface layer 21 and the second matte PLA surface layer 23 both have a thickness of 2 μm; the corona discharge values ​​of the first matte PLA surface layer 21 and the second matte PLA surface layer 23 are 38 dyn; the adhesive layer 30 is a polyurethane adhesive layer with a thickness of 1 μm; and the paper layer 40 is a specialty paper with a weight of 200 g / m³. 2 .

[0035] This solution's paper-plastic composite film for luxury packaging combines the texture of paper with the functionality of plastic. It not only has excellent visual effects (such as matte, metallic luster, texture, etc.) but also good physical properties (such as scratch resistance, tear resistance, water resistance, etc.). The matte PLA layer uses a bio-based biodegradable polylactic acid (PLA) film, which meets the requirements of sustainable development and has good market prospects.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 utility model.

Claims

1. A paper-plastic composite film for luxury goods packaging, characterized by, From outside to inside, it is sequentially provided with a scratch-resistant coating, a matte PLA layer, an adhesive layer and a paper layer; the matte PLA layer is composed of a first PLA matte surface layer, a PLA matte core layer and a second PLA matte surface layer, and the first PLA matte surface layer, the PLA matte core layer and the second PLA matte surface layer are all double-sided matte biaxially oriented polylactic acid film.

2. The paper-plastic composite film for luxury packaging according to claim 1, wherein The scratch-resistant coating is coated on the outer surface of the first PLA matte surface layer by coating with scratch-resistant paint, and the thickness of the scratch-resistant coating is 1-2 μm.

3. The paper-plastic composite film for luxury packaging according to claim 1, wherein The thickness of the matte PLA layer is 10-30 μm.

4. The paper-plastic composite film for luxury packaging according to claim 1, wherein The thickness of the first PLA matte surface layer and the second PLA matte surface layer is both 1-5 μm.

5. The paper-plastic composite film for luxury packaging according to claim 1, wherein The corona value of the first PLA matte surface layer and the second PLA matte surface layer is ≥38 dyn.

6. The paper-plastic composite film for luxury packaging according to claim 1, wherein The adhesive layer is a polyurethane glue layer.

7. The paper-plastic composite film for luxury packaging according to claim 1, wherein The thickness of the adhesive layer is 0.5-2 μm.

8. The paper-plastic composite film for luxury packaging according to claim 1, wherein The paper layer is high-grade art paper or special paper.

9. The paper-plastic composite film for luxury packaging according to claim 1, wherein The paper layer has a weight of 10-500 g / m 2 .

10. The paper-plastic composite film for luxury packaging according to claim 1, wherein The outer surface of the paper-plastic composite film is treated by one of embossing, gold stamping or laser engraving.

Images