Multi-layer self-adhesive paper

Abstract

The utility model relates to the field of self-adhesive paper, and discloses multi-layer self-adhesive paper which comprises a surface assembly, a base layer, a glue layer and bottom paper, the base layer is compounded at the bottom of the surface assembly, and the base layer is connected with the bottom paper which can be torn down through the glue layer. Particularly, the surface assembly is composed of the surface layer and the pattern layer, so that more information can be carried in a limited space. Various detailed information such as product names, specifications, components, use methods and shelf lives are printed on the layers, so that complex identification requirements of the products are met, and a user can clearly and comprehensively obtain related information of the products. For example, on a medicine packaging label, various attributes and instructions of the medicine can be completely presented, and a patient can conveniently and accurately take the medicine.

Description

Technical Field

[0001] This utility model relates to the field of self-adhesive paper, specifically a multi-layer self-adhesive paper. Background Technology

[0002] In modern packaging, signage, and advertising, self-adhesive paper is an important material widely used for information display, brand promotion, and functional identification of various products. With the continuous development of various industries and the increasing diversification of market demands, higher and higher requirements are being placed on the performance, functionality, and ease of use of self-adhesive paper.

[0003] Traditional single-layer self-adhesive labels, due to their simple structure, have certain limitations in terms of the richness of information they can carry and the versatility of their functions. For example, the content they can display is limited, making it difficult to meet the increasingly complex instructions and labeling needs of products. When a large amount of information, such as product name, specifications, ingredients, usage methods, shelf life, and anti-counterfeiting information, needs to be presented on the same label, single-layer self-adhesive labels often cannot clearly and logically arrange this content, resulting in a chaotic information display and affecting the efficiency and accuracy of users in obtaining information.

[0004] In terms of durability, single-layer self-adhesive paper performs poorly in the face of complex and changing environmental conditions. For example, in outdoor environments, factors such as direct sunlight, rain, and temperature changes can easily cause the printed patterns to fade and deform, and the adhesive strength to decrease, leading to label detachment or loss of identification function. In some industrial environments with chemical corrosion risks or in industries such as food and daily chemicals where high waterproof and oil-proof requirements are necessary, single-layer self-adhesive paper also struggles to meet the needs of long-term stable use.

[0005] Furthermore, in some special application scenarios, traditional single-layer self-adhesive paper cannot meet specific functional requirements. For example, in the pharmaceutical industry, drug labels not only need to display basic drug information, but also need to have functions such as traceability and tamper-proofing; in the field of electronic products, in addition to identifying product models and parameters, labels also need to adapt to the production processes and usage environments of electronic products, such as high temperature resistance and anti-static properties. For this reason, we have proposed a multi-layer self-adhesive paper. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a multi-layer self-adhesive paper that solves the aforementioned problems.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a multilayer self-adhesive paper, comprising a surface component, a base layer, an adhesive layer, and a backing paper, wherein the base layer is laminated to the bottom of the surface component, and the base layer is connected to the peelable backing paper through the adhesive layer.

[0008] Preferably, the base paper is glassine paper or kraft paper, and the surface of the glassine paper is provided with a silicone oil layer.

[0009] Preferably, the tear-off end of the base paper has an integrally formed side arc-shaped extension.

[0010] Preferably, the surface component is any one of coated paper, PET, or synthetic paper.

[0011] Preferably, the surface component comprises a surface layer and a layer component, wherein the surface layer is laminated on the surface of the layer, the layer is laminated on the surface of the surface layer, and the surface layer is transparent PET.

[0012] Preferably, the base layer has multiple sets of grooves equidistantly spaced on one side for contact with the adhesive layer, and the grooves are inclined.

[0013] Compared with the prior art, this utility model provides a multi-layer self-adhesive paper with the following beneficial effects:

[0014] 1. This multi-layered self-adhesive paper features a multi-layered structural design, especially the surface component, which consists of a surface layer and multiple layers. This allows it to carry more information within a limited space. By printing product names, specifications, ingredients, usage instructions, shelf life, and other detailed information on the layers, it meets the complex labeling needs of products, enabling users to clearly and comprehensively obtain relevant product information. For example, on pharmaceutical packaging labels, it can fully present the various attributes and instructions for use of the medicine, facilitating accurate medication use for patients.

[0015] 2. This multi-layer self-adhesive paper features a transparent PET surface layer laminated to the outside of the printed pattern, acting like a "protective suit" for the design. This effectively blocks external factors such as ultraviolet rays, moisture, and dust from eroding the pattern, preventing discoloration and fading. It also avoids wear and tear caused by friction, ensuring the label maintains a clear and vibrant visual effect over extended periods. For example, labels on outdoor billboards can maintain excellent visibility even after prolonged exposure to wind and sun, effectively conveying advertising information.

[0016] 3. This multi-layer self-adhesive paper features equidistant, slanted grooves on the side of the base layer that contacts the adhesive layer. When adhesive is applied, it fully penetrates these grooves, significantly increasing the contact area between the adhesive and the base layer, thereby greatly improving the adhesion between them. This tight bond makes the entire multi-layer self-adhesive paper structure more stable, effectively preventing delamination during use and extending the product's lifespan. For example, during logistics and transportation, even if the self-adhesive label is subjected to external forces such as bumps or compression, it can maintain the integrity of each layer, ensuring the label information remains intact.

[0017] 4. This multi-layer self-adhesive paper offers a variety of surface components made from materials such as PET, which boasts excellent weather resistance, chemical resistance, and tensile strength, making it suitable for outdoor environments or applications requiring high durability. Synthetic paper, on the other hand, provides waterproof, oil-proof, and tear-resistant properties, making it ideal for label production in specialized environments like food and chemical plants. This allows multi-layer self-adhesive paper to be widely used in various scenarios and industries, meeting diverse application needs.

[0018] 5. This multi-layer self-adhesive paper features an integrally formed curved extension on one side of the tear-off end of the backing paper. This user-friendly design fully considers the user's operating habits. The curved extension provides an easy-to-grip area for the fingers, conforming to ergonomic principles and greatly reducing the difficulty of tearing off the backing paper. This allows operators to peel off the backing paper more easily and quickly for label application. On production lines that require a large number of labels, this design can significantly improve work efficiency and reduce operational errors and wasted time caused by difficulty in tearing off the backing paper. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0021] Figure 3 This is a schematic diagram of the base layer of this utility model.

[0022] In the diagram: 1. Surface layer; 2. Layer; 3. Base layer; 4. Adhesive layer; 5. Backing paper; 6. Side curved extension; 7. Groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-3 A multilayer self-adhesive paper includes a surface component, a base layer 3, an adhesive layer 4, and a backing paper 5. The base layer 3 is laminated to the bottom of the surface component. The base layer 3 is connected to the peelable backing paper 5 through the adhesive layer 4. The backing paper 5 serves to protect the adhesive layer 4 and provide support for the base layer 3 and the surface component.

[0025] Furthermore, the backing paper 5 is glassine paper or kraft paper. The surface of the glassine paper is provided with a silicone oil layer, which has a good release effect and facilitates the separation of the face material from the backing paper. The paper also has high strength and is suitable for high-speed label printing and automatic labeling equipment. Kraft paper backing paper has a lower cost and has a certain degree of flexibility and wear resistance.

[0026] Furthermore, the tear-off end of the backing paper 5 is integrally formed with a side arc-shaped extension 6. By adding the side arc-shaped extension 6, it is easier to tear the backing paper 5 off the adhesive layer 4 and to detach it from the adhesive layer 4.

[0027] Furthermore, the surface component can be made of any of the following materials: coated paper, PET, or synthetic paper. It comes into direct contact with the outside world and displays printed content. Coated paper has a smooth surface, strong printability, and high color fidelity, and is often used for product labels and advertising. PET material has good weather resistance, chemical resistance, and tensile strength, and is suitable for outdoor environments or occasions with high durability requirements. Synthetic paper material has waterproof, oil-proof, and tear-resistant properties, and can be used for label production in some special environments.

[0028] Furthermore, the surface component consists of surface layer 1 and layer 2 components. Surface layer 1 is laminated on the surface of layer 2, and layer 2 is laminated on the surface of surface layer 1. Surface layer 1 is transparent PET. The required pattern is printed on layer 2 and then laminated on the inside of surface layer 1. This can meet the requirements of long-term display scenarios and protect the printed pattern on layer 2 from discoloration or fading.

[0029] Furthermore, the base layer 3 has multiple sets of grooves 7 equidistantly formed on the side that contacts the adhesive layer 4. The grooves 7 are inclined so that when the adhesive layer 4 is applied to the bottom of the base layer 3, the adhesive layer 4 can be completely soaked into the interior of the grooves 7.

[0030] Structural Description:

[0031] There are two ways to compose the surface components. The first is to use any one of the following materials: coated paper, PET, or synthetic paper. The second is to consist of surface layer 1 and layer 2.

[0032] Surface Layer 1: Made of transparent PET material, it boasts high transparency, ensuring the original appearance of the object being adhered to remains largely unobstructed, maintaining visual clarity. PET itself exhibits strong chemical stability, showing good resistance to common acids, alkalis, and organic solvents, and is not easily damaged by chemical reactions. Furthermore, its outstanding tensile strength means that even under certain stretching during processing, transportation, and use, it is not prone to tearing or deformation, which is crucial for maintaining the integrity of the label. For example, in applications such as large outdoor advertising stickers or industrial equipment labeling, it can withstand wind, sun, rain, and potential external stretching, maintaining its excellent appearance and performance over the long term.

[0033] Layer 2: This layer carries the printed design. Various printing processes, such as offset printing, flexographic printing, and digital printing, are used to print the required text, graphics, colors, and other information onto Layer 2. After printing, it is laminated to the inside of Surface Layer 1. Surface Layer 1 acts as a protective shield, providing physical protection for the printed design on Layer 2. This prevents damage from external environmental factors such as ultraviolet rays, humidity, and friction, effectively avoiding discoloration, fading, or wear. It ensures that the label's design remains clear and vibrant even in long-term display scenarios, such as long-term product displays or outdoor advertising.

[0034] Grassroots 3

[0035] Function: As an intermediate structure connecting the surface component and adhesive layer 4, it plays a crucial role in bridging the gap between them. It must not only be firmly bonded to the surface component, ensuring the integrity of the entire self-adhesive paper structure, but also provide a suitable adhesion surface for adhesive layer 4.

[0036] Grooves 7: Multiple sets of inclined grooves 7 are equidistantly formed on the side of the base layer 3 that is in contact with the adhesive layer 4. This design has a unique advantage: when the adhesive layer 4 is applied to the bottom of the base layer 3, due to the inclination angle of the grooves 7, the adhesive can more easily and completely penetrate into the interior of the grooves 7 by means of gravity and surface tension. This not only increases the contact area between the adhesive and the base layer 3, greatly improving the adhesion between the adhesive layer 4 and the base layer 3, making the two bond more firmly, but also enhances the stability of the entire self-adhesive paper structure to a certain extent, preventing delamination due to poor adhesion between the adhesive and the base layer during use.

[0037] Adhesive layer 4

[0038] Function: The adhesive layer 4 is the key component for achieving the adhesive paper's sticking function. Through its own adhesiveness, it temporarily connects the base layer 3 and the backing paper 5 together, while also ensuring that the entire adhesive paper is firmly adhered to the surface of the target object during use.

[0039] Characteristics: The adhesive strength of the glue needs to be selected and formulated according to different application scenarios. For example, for labels that need to be fixed for a long time, a strong permanent adhesive is selected to ensure that the label can be firmly attached and not easily fall off throughout the product's entire life cycle; while for some temporary labels, such as promotional labels or labels with replaceable information, a removable adhesive is used. This type of adhesive has enough adhesion to ensure that the label will not fall off easily when applied, but when it needs to be removed, it can be relatively easily peeled off from the surface without leaving too much adhesive residue, thus avoiding contamination or damage to the surface of the object being adhered to.

[0040] Base paper 5

[0041] Material and characteristics: The base paper 5 can be glassine paper or kraft paper.

[0042] Glassine paper: Its surface is coated with a silicone oil layer, a special coating that gives glassine paper excellent release properties. During the production, storage, and use of self-adhesive paper, it allows the face stock (i.e., the surface component) to easily separate from the backing paper, greatly facilitating label processing and application. Simultaneously, glassine paper has high paper strength, capable of withstanding the tension of high-speed label printing equipment during the printing process and the various forces exerted by automated labeling equipment during gripping, conveying, and labeling. This ensures that the backing paper will not break or deform under high-speed production and automated operation, guaranteeing production efficiency and product quality. It is commonly used in industries with high requirements for label processing precision and production efficiency, such as electronics, pharmaceuticals, and daily chemicals.

[0043] Kraft paper backing: Relatively low cost, offering a significant cost advantage for applications with strict cost control, such as ordinary logistics labels and simple identification labels for industrial products. Kraft paper also possesses a degree of flexibility, allowing it to adapt to labeling irregularly shaped surfaces. Furthermore, it exhibits some resistance to friction and impact during transportation and storage, effectively protecting the adhesive layer from external physical damage and ensuring that the adhesive performance of the self-adhesive paper remains unaffected before use.

[0044] Side curved extension 6: A side curved extension 6 is integrally formed on one side of the tear-off end of the backing paper 5. This design fully considers the user's convenience during use. When it is necessary to peel off the backing paper 5 for the pasting operation, the curved extension provides a part that is easy to pinch with your fingers. Compared with the flat edge of the backing paper, the curved design is more ergonomic, allowing users to more easily and accurately pinch and apply force to tear off the backing paper, greatly reducing the difficulty of tearing off the backing paper and improving operating efficiency. This advantage is even more obvious when a large number of labels need to be pasted quickly.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer self-adhesive paper, characterized in that, It includes a surface component, a base layer (3), an adhesive layer (4), and a backing paper (5). The bottom of the surface component is laminated with the base layer (3), and the base layer (3) is connected to the peelable backing paper (5) through the adhesive layer (4).

2. The multilayer self-adhesive paper according to claim 1, characterized in that: The base paper (5) is glassine paper or kraft paper, and the surface of the glassine paper is provided with a silicone oil layer.

3. The multilayer self-adhesive paper according to claim 1, characterized in that: The tear-off end of the base paper (5) has an integrally formed side arc-shaped extension (6).

4. The multilayer self-adhesive paper according to claim 1, characterized in that: The surface components can be made of any of the following materials: coated paper, PET, or synthetic paper.

5. The multilayer self-adhesive paper according to claim 1, characterized in that: The surface component consists of a surface layer (1) and a layer (2) component, wherein the surface layer (1) is laminated on the surface of the layer (2) and the layer (2) is laminated on the surface layer (1), and the surface layer (1) is transparent PET.

6. The multilayer self-adhesive paper according to claim 1, characterized in that: The base layer (3) has multiple sets of grooves (7) equidistantly provided on one side for contacting the adhesive layer (4), and the grooves (7) are inclined.

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