Environment-friendly adhesive tape with repairing function

Abstract

The utility model discloses an environment-friendly adhesive tape with a repairing function, which comprises a composite base material layer, a first adhesive layer and a second adhesive layer, the mounting adhesive layer is arranged on the first surface; the composite base material layer comprises outer layers and a core layer clamped between the outer layers, the outer layers are degradable unit layers, and the second surface is provided with an anti-ultraviolet layer and a repairing and hardening surface layer which are sequentially stacked from inside to outside. The environment-friendly adhesive tape with the repairing function is reasonable in structure, the adhesive tape is gradually degraded from outside to inside through the composite base material layer of the degradable unit layer and core layer combined structure, and the mechanical performance of the adhesive tape is improved; the anti-ultraviolet layer and the repairing adhesive tape surface layer are combined, so that the service life of the adhesive tape is prolonged, and the mechanical property is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of adhesive tape, especially to an environment-friendly adhesive tape with a repairing function. BACKGROUND

[0002] Environment-friendly adhesive tape is a kind of adhesive tape aiming to reduce environmental impact, usually made of renewable resources, biodegradable materials or low-toxicity chemicals. The structure of environment-friendly adhesive tape is similar to that of traditional adhesive tape, but the selection of each layer of material and the production process pay more attention to sustainability and environmental friendliness. Among them, the mechanical properties of environment-friendly adhesive tape made of biodegradable materials have decreased.

[0003] Therefore, it is necessary to improve the environment-friendly adhesive tape in the prior art. INVENTION CONTENTS

[0004] The utility model discloses a kind of environment-friendly adhesive tapes with repairing function, which is to overcome the defects in the prior art, and the composite substrate layer of degradable unit layer and core layer combination structure is used to realize the degradation of adhesive tape from outside to inside gradually, and the mechanical properties of adhesive tape are improved;With the setting of ultraviolet resistant layer and repair adhesive tape surface layer, the service life of adhesive tape is improved and the mechanical properties are further improved.

[0005] To achieve the above technical effects, the technical scheme of the utility model is as follows: an environment-friendly adhesive tape with repairing function comprises:

[0006] The composite substrate layer has a first surface and a second surface opposite in thickness.

[0007] The installation adhesive layer is arranged on the first surface.

[0008] The composite substrate layer includes an outer layer and a core layer sandwiched between the outer layers, and the outer layers are degradable unit layers.

[0009] Preferably, the installation adhesive layer includes a repair adhesive layer and a high adhesive layer, and the repair adhesive layer is close to the composite substrate layer.

[0010] Preferably, the material of the core layer is polyethylene terephthalate, and the material of the outer layer is polyester containing degradable material.

[0011] Preferably, the material of the repair hardened surface layer is polyurethane coating.

[0012] Preferably, the material of the ultraviolet resistant layer is acrylic coating.

[0013] Preferably, the material of the repairing adhesive layer and the high-adhesion adhesive layer is water-based polyurethane adhesive.

[0014] Preferably, the repairing adhesive layer contains self-repairing microcapsules.

[0015] Preferably, the mounting adhesive layer is provided with an antistatic release film away from the surface of the composite substrate layer.

[0016] The utility model discloses the advantages and beneficial effects are:

[0017] The environment-friendly adhesive tape with the repairing function has reasonable structure, realizes gradually degrading the adhesive tape from outside to inside through the composite substrate layer of the degradable unit layer and the core layer combination structure, and improves the mechanical property of the adhesive tape; through the setting of the ultraviolet resistant layer, effectively prevent the light from causing the molecular chain to break and leading to the shortening of the service life of the adhesive tape; through the setting of the repairing hardened surface layer, can prevent the expansion of the existing damage, and prevent the premature failure caused by the surface damage. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure diagram of the environment-friendly adhesive tape with the repairing function of the utility model;

[0019] Figure 2 is another structure diagram of the environment-friendly adhesive tape with the repairing function of the utility model.

[0020] In the drawing: 1, composite substrate layer; 2, mounting adhesive layer; 4, antistatic release film; 10, core layer; 11, outer layer; 21, repairing adhesive layer; 22, high-adhesion adhesive layer; 31, ultraviolet resistant layer; 32, repairing hardened surface layer. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model is further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0022] "Inner", "outer", "surface layer", "outer layer" take the normal use state of the environment-friendly adhesive tape with the repairing function as reference, only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a specific orientation, a specific orientation structure and operation, therefore, cannot be understood as the limitation of the utility model.

[0023] In addition, the terms "first", "second", and the like are used only for descriptive purposes and do not denote or imply relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0024] As shown in Figures 1-2 The utility model discloses a have the environmental protection adhesive tape of repair function includes composite substrate layer 1 and installation glue layer 2, and composite substrate layer 1 has the first surface (not marked) and second surface (not marked) along the relative layer thickness, and installation glue layer 2 sets up at the first surface, and composite substrate layer 1 includes outer layer 11 and the core layer 10 of being arranged between the outer layer 11, and the outer layer 11 is all degradable unit layer, and the second surface is provided with the ultraviolet resistant layer 31 and the repair hardening surface layer 32 that stack gradually from inside to outside.

[0025] Through the composite substrate layer of degradable unit layer and core layer combination structure, realize gradually degradable adhesive tape from inside to outside, and improve the mechanical property of adhesive tape, through the setting of ultraviolet resistant layer 31, effectively prevent the shortening of the service life of adhesive tape caused by the fracture of molecular chain under light, through the setting of repair hardening surface layer 32, can prevent the expansion of existing damage, prevent its premature failure due to surface damage.

[0026] As shown in Figure 1 Installation glue layer 2 only includes high viscosity glue layer 22. Figure 2 As shown in Figure 2 Installation glue layer 2 includes repair glue layer 21 and high viscosity glue layer 22, and repair glue layer 21 is close to composite substrate layer 1. Further, the material of repair glue layer 21 and high viscosity glue layer 22 is water-based polyurethane adhesive. Still further, repair glue layer 21 contains self-repairing microcapsules. The self-repairing microcapsules include a core and a sealed shell surrounding the core, the material of the core is isocyanate, and the material of the sealed shell is polyurethane. The material of the self-repairing microcapsules is selected to improve its compatibility with the raw material of the water-based polyurethane adhesive, and the uniformity of distribution can improve the self-repairing effect of the installation glue. Figure 2 The adhesive tape structure effectively prevents the adhesive layer from being scratched by sharp objects, resulting in poor adhesive performance, and can also work together with the repair hardening surface layer 32 to repair the adhesive tape and improve its service life.

[0027] Water-based polyurethane adhesive uses water as a solvent, contains almost no or only a small amount of volatile organic compounds (VOCs), reducing the harm to the environment and human health, and is environmentally friendly in production and use, non-toxic to the human body, and meets the requirements of environmental protection regulations; Because water-based polyurethane adhesive does not contain flammable solvents, it is not easy to burn during storage, transportation and use, reducing the risk of fire, and also has no irritating odor; Water-based polyurethane adhesive has good bonding strength and can meet the bonding needs of various materials; Water-based polyurethane adhesive has excellent elasticity and flexibility and can stretch with the deformation of the substrate within a certain range without cracking; Water-based polyurethane adhesive has good wear resistance, good weather resistance, and can be used outdoors for a long time without aging, and chemical resistance; Water-based polyurethane adhesive can bond a variety of materials, including plastics, metals, wood, paper, fabrics, etc.; If water-based polyurethane adhesive splashes on equipment or tools during use, it can be easily cleaned with water; Water-based polyurethane adhesive can remain stable for a long time under appropriate storage conditions and is not prone to spoilage.

[0028] The material of the core layer 10 is polyethylene terephthalate, and the material of the outer layer 11 is polyester containing degradable material. PET has good mechanical properties, high tensile strength and impact strength, and good toughness at low temperatures, and is not prone to brittle fracture; It has good heat resistance and good thermal stability at high temperatures, and is not prone to decomposition or discoloration; PET is a recyclable material and an environmentally friendly material, which can be recycled multiple times to reduce resource waste.

[0029] The material of the hardened surface layer 32 is a polyurethane coating. Dynamic covalent bonds (such as Diels-Alder reaction, disulfide exchange, oxime exchange, etc.) are introduced into the polyurethane network, which can reform under certain conditions when the material is damaged, thereby repairing the damage. The polyurethane coating can provide a high-hardness surface, improving the wear resistance and scratch resistance of the material; It has good elasticity and flexibility and can withstand a certain degree of deformation without breaking; It also has high tensile strength and can resist tearing and breaking.

[0030] To achieve degradability of the outer layer 11, copolymerization modification can be used, specifically by introducing biodegradable monomers such as polylactic acid (PLA), polycaprolactone (PCL) or other bio-based monomers during PET polymerization to prepare copolymers; Degradable segments such as polyester segments can also be introduced to improve the biodegradability of PET. By adding degradable additives to the polyester, such as adding specific enzymes or enzyme immobilized carriers to PET. Nano-scale degradable materials (such as nanocellulose) can also be added to PET to improve its biodegradability.

[0031] The material of the anti-ultraviolet layer 31 is an acrylic coating. The acrylic coating itself has good weather resistance, chemical resistance, transparency and decorative properties. By adding an anti-ultraviolet material, the ultraviolet resistance performance can be further improved, the service life can be prolonged, the color and gloss can be maintained, the durability can be improved, and the maintenance cost can be reduced.

[0032] The anti-static release film 4 is arranged away from the surface of the composite substrate layer 1.

[0033] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the technical principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. An environment-friendly adhesive tape with a repairing function, comprising: a composite substrate layer having a first surface and a second surface opposite along the thickness of the layer; an installation adhesive layer arranged on the first surface; characterized in that the composite substrate layer comprises an outer layer and a core layer sandwiched between the outer layers, the outer layers are both degradable unit layers, and the second surface is provided with an ultraviolet-resistant layer and a repairing hard surface layer stacked in turn from inside to outside.

2. The environment-friendly adhesive tape with a repair function according to claim 1, characterized in that, The installation adhesive layer comprises a repairing adhesive layer and a high-adhesion adhesive layer, and the repairing adhesive layer is close to the composite substrate layer.

3. The environment-friendly adhesive tape with a repair function according to claim 1, characterized in that, The material of the core layer is polyethylene terephthalate, and the material of the outer layer is polyester containing degradable material.

4. The environment-friendly adhesive tape with a repair function according to claim 1, characterized in that, The material of the repairing hard surface layer is polyurethane coating.

5. The environment-friendly adhesive tape with a repair function according to claim 1, characterized in that, The material of the ultraviolet-resistant layer is acrylic coating.

6. The environment-friendly adhesive tape with a repair function according to claim 2, characterized in that, The materials of the repairing adhesive layer and the high-adhesion adhesive layer are both water-based polyurethane adhesive.

7. The environment-friendly adhesive tape with a repair function according to claim 6, characterized in that, The repairing adhesive layer contains self-repairing microcapsules.

8. The environment-friendly adhesive tape with a repair function according to claim 1, characterized in that, The surface of the installation adhesive layer away from the composite substrate layer is provided with an antistatic release film.

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