Environment-friendly aluminum-plating-layer-free color-changeable label with metal effect and formula thereof

Abstract

The invention provides an environment-friendly aluminum-plating-layer-free color-changeable label with a metal effect and a formula thereof.The label sequentially comprises a base material layer, a first ink layer, an optical film, a coating and a second ink layer from bottom to top, and the first ink layer and the second ink layer each comprise polyurethane, a photocuring monomer, pigment powder, a photoinitiator and an acrylic resin oligomer; the coating comprises modified polyester, a photocuring monomer, matting powder, a photoinitiator, an acrylic resin oligomer and an auxiliary agent. The environment-friendly material is adopted, no metal material is added, no aluminum plating layer exists, the influence on the environment is reduced, through cooperation of the optical film, the printing ink and the coating, the excellent metal luster effect can be achieved without aluminum plating, and the attractiveness of the label is improved. The label can be applied to various scenes such as beverage bottles and cosmetic bottles, and excellent visual experience is provided for consumers.

Description

Technical Field

[0001] The invention relates to the technical field of labels, and in particular to an environmentally friendly label without aluminum plating layer, with variable color and metallic effect, and a formula thereof. Background Art

[0002] Existing labels cannot bring excellent visual effects to customers when applied to bottles and other packaging. For example, Chinese invention patent 2019108500395 discloses an in-mold label with color-changing effect and its production equipment, which uses thermochromic technology and needs temperature changes to change color, and cannot bring excellent visual effects to customers. In addition, in order to achieve a metallic luster effect, metal materials such as aluminum are usually added to the label, which is not only costly but also not environmentally friendly.

[0003] With the increasing awareness of environmental protection and the growing demand for aesthetics and personalization, traditional labels have been unable to meet market demand. Currently, most of the labels with metallic luster on the market are achieved through processes such as aluminum plating. These processes not only have an impact on the environment, but are also prone to oxidation and fading during long-term use. In addition, most traditional color-changing labels use thermochromic materials, which have a limited color change range and are relatively expensive. Therefore, developing a label that is both environmentally friendly and has excellent metallic luster and color change effect has become an urgent problem to be solved. Summary of the invention

[0004] In view of the above problems, the present invention proposes an environmentally friendly non-aluminum-plated color-changing metallic effect label and its formula, which achieves the metallic effect by adopting an environmentally friendly formula and can change color, thereby giving customers an excellent visual effect.

[0005] The present invention provides an environmentally friendly non-aluminum-plated color-variable metallic effect label, which comprises, from bottom to top, a substrate layer, a first ink layer, an optical film, a coating layer, and a second ink layer. The first ink layer and the second ink layer both comprise polyurethane, a photocurable monomer, pigment powder, a photoinitiator, and an acrylic resin polymer. The coating layer comprises modified polyester, a photocurable monomer, a matting powder, a photoinitiator, an acrylic resin polymer, and an additive.

[0006] Optionally, the substrate layer can be made of at least one of paper, PET, PP and PE.

[0007] Furthermore, the optical film adopts a blue light rainbow film, and the microstructure on the blue light rainbow film can interfere with light to produce a colorful effect, bringing excellent visual effects to customers. The blue light rainbow film also has a certain blue light management function, that is, it can absorb, transform or block harmful blue light, reducing the potential damage of blue light to the eyes.

[0008] Optionally, the optical film also includes an anti-UV film, a reflective film, and a polarizing film. The anti-UV film can ensure that the label will not fade when used outdoors for a long time. The reflective film and the polarizing film can achieve the gradient and color-changing effects of the label, making the label partially reflective and bright.

[0009] Optionally, a release layer is provided below the substrate layer, and after the label is separated from the release layer, the label can be attached to products such as beverage bottles and cosmetic bottles. The surface of the optical film is also provided with raised PET for decoration to achieve a three-dimensional effect of the label, bringing a better feel.

[0010] The present invention also provides a formula for an environmentally friendly non-aluminum-plated color-variable metal effect label, comprising the above-mentioned label, wherein the first ink layer comprises the following raw materials in weight proportion: 13-18% polyurethane, 20-28% photocurable monomer, 18-25% pigment powder, 10-15% photoinitiator, and 20-30% acrylic resin polymer; the coating comprises the following raw materials in weight proportion: 18-26% modified polyester, 14-20% photocurable monomer, 6-12% matting powder, 8-14% initiator, 25-30% acrylic resin polymer, and 8-12% auxiliary agent; the second ink layer comprises the following raw materials in weight proportion: 18-22% polyurethane, 22-28% photocurable monomer, 13-20% pigment powder, 13-18% photoinitiator, and 25-33% acrylic resin polymer.

[0011] Furthermore, the first ink layer comprises the following raw materials in weight proportion: polyurethane 16-18%, photocurable monomer 24-28%, pigment powder 20-25%, photoinitiator 10-15%, acrylic resin oligomer 20-30%; the coating comprises the following raw materials in weight proportion: modified polyester 18-24%, photocurable monomer 16-20%, matting powder 6-10%, initiator 10-14%, acrylic resin oligomer 25-30%, additive 8-10%; the second ink layer comprises the following raw materials in weight proportion: polyurethane 18-20%, photocurable monomer 24-28%, pigment powder 14-20%, photoinitiator 16-18%, acrylic resin oligomer 26-30%. The substrate is environmentally friendly paper or biodegradable plastic.

[0012] Among them, the polyurethane in the formula of the first ink layer and the second ink layer is used to provide good adhesion and flexibility, which helps to achieve good bonding between the ink and the substrate and improve the overall durability of the label; the photocurable monomer participates in the photocuring reaction and works together with the photoinitiator to accelerate the curing process of the ink and improve production efficiency; the pigment powder gives the ink a specific color and is also one of the key ingredients for achieving a metallic texture, giving it an attractive appearance; the photoinitiator promotes the curing of the ink and improves production efficiency; the acrylic resin polymer is used to enhance the adhesion and durability of the ink and extend the service life of the label.

[0013] Among them, the modified polyester in the coating formula provides good film-forming properties and mechanical strength, enhances the flexibility and wear resistance of the coating, and improves the overall durability of the label; the photocurable monomer and the photoinitiator work together to accelerate the curing process of the coating and improve production efficiency; the matting powder is used to adjust the gloss of the coating, provide a soft matte effect, and increase the aesthetics of the label. The photoinitiator promotes the curing of the coating and improves production efficiency; the acrylic resin polymer enhances the adhesion and durability of the coating and extends the service life of the label; the additive is used to improve the rheological properties of the coating, making it easier to apply, while improving the uniformity and smoothness of the coating.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Environmental performance: The present invention adopts environmentally friendly materials, does not add metal materials, reduces the impact on the environment, and conforms to the concept of sustainable development;

[0016] Metallic texture: Through special optical films, inks, and coatings, excellent metallic luster effects can be achieved without aluminum plating, which improves the aesthetics of the label;

[0017] Color-changing function: The blue light iridescent film has a color-changing function, which can automatically adjust the color under different environmental conditions, enhancing the fun and interactivity of the label;

[0018] Durability: The ink and coating of the present invention improve the weather resistance and service life of the label.

[0019] The label of the present invention can be applied to a variety of scenarios, such as beverage bottles, cosmetic bottles, etc., to provide consumers with an excellent visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0022] Among them, the reference numerals in the figure are:

[0023] 1. Release layer; 2. Substrate layer; 3. First ink layer; 4. Optical film; 5. Coating layer; 6. Second ink layer.

[0024] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] 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 described embodiments are 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 creative work are within the scope of protection of the present invention.

[0026] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] like Figure 1 As shown, this embodiment provides an environmentally friendly non-aluminum-plated color-variable metallic effect label, which includes a substrate layer 2, a first ink layer 3, an optical film 4, a coating 5, and a second ink layer 6 from bottom to top. The first ink layer 3 and the second ink layer 6 both include polyurethane, a photocurable monomer, a pigment powder, a photoinitiator, and an acrylic resin polymer. The coating 5 includes modified polyester, a photocurable monomer, a matting powder, a photoinitiator, an acrylic resin polymer, and an additive.

[0029] The substrate layer 2 is made of PE (polyethylene), and the optical film 4 is made of blue light rainbow film. The microstructure on the blue light rainbow film can interfere with light, produce a colorful effect, and bring excellent visual effects to customers. The blue light rainbow film also has a certain blue light management function, that is, it can absorb, transform or block harmful blue light, reducing the potential damage of blue light to the eyes.

[0030] A release layer 1 is also provided below the substrate layer 2. After the label is separated from the release layer 1, it can be attached to products such as beverage bottles and cosmetic bottles. The surface of the optical film 4 is also provided with convex PET for decoration to achieve a three-dimensional effect of the label and bring a better feel.

[0031] Label preparation:

[0032] A first ink layer 3 is coated on the substrate layer 2 to form a specific pattern or text. After the first ink layer 3 is cured, an optical film 4 is placed on the first ink layer 3. Then, a coating layer 5 is coated on the optical film 4 to enhance the metallic texture and color change effect. Finally, a second ink layer 6 is coated to provide additional protection and beautification effect. The first ink layer 3 includes the following raw materials in weight proportion: 18% polyurethane, 22% photocurable monomer, 20% pigment powder, 12% photoinitiator, and 28% acrylic resin polymer; the coating layer 5 includes the following raw materials in weight proportion: 26% modified polyester, 14% photocurable monomer, 10% matting powder, 10% initiator, 28% acrylic resin polymer, and 12% auxiliary agent; the second ink layer 6 includes the following raw materials in weight proportion: 18% polyurethane, 27% photocurable monomer, 15% pigment powder, 14% photoinitiator, and 26% acrylic resin polymer.

[0033] The polyurethane in the formula of the first ink layer and the second ink layer is used to provide good adhesion and flexibility, which helps to achieve a good combination of ink and substrate and improve the overall durability of the label; the photocurable monomer participates in the photocuring reaction and works together with the photoinitiator to accelerate the curing process of the ink and improve production efficiency; the pigment powder gives the ink a specific color and is also one of the key ingredients to achieve a metallic texture, giving it an attractive appearance; the photoinitiator promotes the curing of the ink and improves production efficiency; the acrylic resin polymer is used to enhance the adhesion and durability of the ink and extend the service life of the label.

[0034] The modified polyester in the coating formula provides good film-forming properties and mechanical strength, enhances the flexibility and wear resistance of the coating, and improves the overall durability of the label; the photocurable monomer and the photoinitiator work together to accelerate the curing process of the coating and improve production efficiency; the matting powder is used to adjust the gloss of the coating, provide a soft matte effect, and increase the aesthetics of the label. The photoinitiator promotes the curing of the coating and improves production efficiency; the acrylic resin polymer enhances the adhesion and durability of the coating and extends the service life of the label; the additive is used to improve the rheological properties of the coating, making it easier to apply, while improving the uniformity and smoothness of the coating.

[0035] When in use, after separating the label from the release layer, the label can be attached to products such as beverage bottles and cosmetic bottles.

[0036] Example 2

[0037] This embodiment provides an environmentally friendly label with a metal effect and variable color without aluminum plating. Its structure, preparation steps and use method are the same as those in Embodiment 1.

[0038] Among them, the first ink layer includes the following raw materials in weight proportion: 15% polyurethane, 25% photocurable monomer, 22% pigment powder, 10% photoinitiator, and 28% acrylic resin polymer; the coating layer includes the following raw materials in weight proportion: 22% modified polyester, 18% photocurable monomer, 10% matting powder, 13% initiator, 27% acrylic resin polymer, and 10% additive; the second ink layer includes the following raw materials in weight proportion: 20% polyurethane, 25% photocurable monomer, 15% pigment powder, 15% photoinitiator, and 25% acrylic resin polymer.

[0039] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0040] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An environmentally friendly label with a metal effect and variable color without aluminum coating, characterized by: From bottom to top, it includes a substrate layer, a first ink layer, an optical film, a coating layer, and a second ink layer. The first ink layer and the second ink layer both include polyurethane, a photocurable monomer, pigment powder, a photoinitiator, and an acrylic resin polymer. The coating layer includes modified polyester, a photocurable monomer, a matting powder, a photoinitiator, an acrylic resin polymer, and an additive.

2. The environmentally friendly label without aluminum coating and with variable color and metallic effect according to claim 1, characterized in that: The substrate layer includes at least one of paper, PET, PP and PE.

3. The environmentally friendly label without aluminum coating and with variable color and metallic effect according to claim 1, characterized in that: The optical film adopts a blue light rainbow film.

4. The environmentally friendly label without aluminum coating and with variable color and metallic effect according to claim 3, characterized in that: The optical film also includes an anti-UV film, a reflective film, and a polarizing film.

5. The environmentally friendly label without aluminum coating and with variable color and metallic effect according to claim 1, characterized in that: A release layer is also arranged below the substrate layer, and a raised PET for decoration is also arranged on the surface of the optical film.

6. A formulation for an environmentally friendly non-aluminum-plated, color-changing metallic effect label, characterized in that: The label comprises the following raw materials in weight proportion: 13-18% polyurethane, 20-28% photocurable monomer, 18-25% pigment powder, 10-15% photoinitiator, 20-30% acrylic resin polymer; the coating comprises the following raw materials in weight proportion: 18-26% modified polyester, 14-20% photocurable monomer, 6-12% matting powder, 8-14% initiator, 25-30% acrylic resin polymer, 8-12% auxiliary agent; the second ink layer comprises the following raw materials in weight proportion: 18-22% polyurethane, 22-28% photocurable monomer, 13-20% pigment powder, 13-18% photoinitiator, 25-33% acrylic resin polymer.

7. The formulation of an environmentally friendly non-aluminum-plated color-changing metallic effect label according to claim 6, characterized in that: The first ink layer comprises the following raw materials in weight proportion: 16-18% polyurethane, 24-28% photocurable monomer, 20-25% pigment powder, 10-15% photoinitiator, and 20-30% acrylic resin polymer; the coating comprises the following raw materials in weight proportion: 18-24% modified polyester, 16-20% photocurable monomer, 6-10% matting powder, 10-14% initiator, 25-30% acrylic resin polymer, and 8-10% auxiliary agent; the second ink layer comprises the following raw materials in weight proportion: 18-20% polyurethane, 24-28% photocurable monomer, 14-20% pigment powder, 16-18% photoinitiator, and 26-30% acrylic resin polymer.

8. The formulation of an environmentally friendly non-aluminum-plated color-changing metallic effect label according to claim 1, characterized in that: The substrate is environmentally friendly paper or biodegradable plastic.

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