Multi-layer self-adhesive paper with high-temperature-resistant function

Abstract

The utility model discloses multi-layer self-adhesive paper with a high-temperature-resistant function, and relates to the technical field of labels. A heat insulation layer covers the bottom paper and comprises a micropore layer, an aerogel felt layer adheres to the micropore layer, the micropore layer is provided with a plurality of heat dissipation holes, the heat dissipation holes are in a honeycomb shape, a plurality of containing grooves are formed in the upper portion of the aerogel felt layer, inner cavities of the containing grooves are filled with aerogel, a bonding layer adheres to the upper portion of the aerogel felt layer, and a top layer adheres to the upper portion of the bonding layer. Connecting paper is arranged on one side of the top layer. According to the utility model, the plurality of heat dissipation holes are formed in the microporous layer and are honeycomb-shaped, so that a large number of air layers and small spaces can be formed in the microporous layer, then the air layers and the small spaces can effectively hinder heat conduction, and air is a poor conductor of heat, so that even in a high-temperature environment, the heat dissipation holes cannot be blocked by the air layers and the small spaces. And the honeycomb-shaped heat dissipation holes can obviously reduce the transmission speed of heat into the microporous layer, so that the heat insulation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of labels, in particular to multi-layer self-adhesive paper with high temperature resistance function. Background Art

[0002] Self-adhesive paper, also known as self-adhesive label material, instant notes, instant stickers, etc., is a composite material, usually with paper, film or special materials as the surface material, adhesive coated on the back, and a base paper coated with a silicone oil layer as a protective paper. Self-adhesive paper is widely used in various packaging, product labels, industrial identification and other fields because of its advantages such as no need for brushing glue, no need for paste, no need for dipping in water, no pollution, and saving labeling time.

[0003] Although self-adhesive paper is widely used in the field of packaging and labeling, traditional products have significant limitations in high temperature resistance. This is mainly due to the fact that its surface materials (such as ordinary paper, PET film) are easy to deform, melt or lose strength at high temperatures, affecting the integrity of the label; the adhesive may lose its viscosity or leave residual adhesive in a high temperature environment, causing the label to fall off or become difficult to clean; at the same time, the silicone oil layer of the base paper may fail under extreme high temperature conditions, causing the adhesive to separate from the base paper. These factors together limit the application of traditional self-adhesive paper in high temperature environments, especially in fields such as automobile manufacturing, aerospace, and electronic appliances that have an urgent need for high-temperature labels. Therefore, there is an urgent need for a multi-layer self-adhesive paper with high temperature resistance.

[0004] Chinese patent document CN201535976U discloses an anti-counterfeiting fragile self-adhesive paper, which comprises a release paper layer, a self-adhesive layer, a base paper layer, and a printing layer from bottom to top; the base paper layer is a fragile paper layer made of non-plant fiber raw materials that can be shattered by tearing; a dispersed anti-counterfeiting fiber layer is arranged in the fragile paper layer. The anti-counterfeiting fiber layer is composed of one or more of infrared fiber, ultraviolet fiber, and liquid crystal temperature-variable fiber; but the following defects still exist in the implementation process:

[0005] Although the self-adhesive paper in the above document is not easy to break, the self-adhesive paper in the above document does not have the function of being resistant to high temperatures. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-layer self-adhesive paper with high temperature resistance function to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A multi-layer self-adhesive paper with high temperature resistance comprises a base paper; a heat insulating layer is covered on the base paper, the heat insulating layer comprises a microporous layer, an aerogel felt layer is adhered to the microporous layer, a plurality of heat dissipation holes are provided on the microporous layer, the heat dissipation holes are in a honeycomb shape, a plurality of placement grooves are provided on the aerogel felt layer, the inner cavity of the placement grooves is filled with aerogel, an adhesive layer is adhered on the aerogel felt layer, a top layer is adhered on the adhesive layer, a connecting paper is provided on one side of the top layer, and the connecting paper is used to separate the top layer, the adhesive layer and the heat insulating layer from the base paper.

[0009] A further improvement of the technical solution of the utility model is that a tear line is provided at the connection position between the connecting paper and the top layer, and the tear line is arranged in an L shape.

[0010] The above technical solution is adopted, in which a tear line is opened at the connection position between the connecting paper and the top layer. After the user uses the connecting paper to separate the top layer, the adhesive layer and the insulation layer from the bottom paper, the user can then separate the connecting paper from the top layer along the tear line.

[0011] A further improvement of the technical solution of the utility model is that a heat reflective coating made of aluminum oxide material is coated on the surface of the top layer.

[0012] The above technical solution is adopted. In this solution, since the aluminum oxide coating has excellent heat reflection properties, it can effectively reflect thermal radiation in a high temperature environment and reduce the transfer of heat to the interior of the top layer, thereby helping to maintain the relative stability of the surface temperature of the top layer and prevent deformation, melting or strength loss caused by high temperature.

[0013] A further improvement of the technical solution of the utility model is that the top layer is made of polyvinyl chloride material.

[0014] By adopting the above technical solution, in this solution, since the polyvinyl chloride material has good chemical stability, high heat resistance and weather resistance, etc., the top layer can have good high temperature resistance.

[0015] A further improvement of the technical solution of the utility model is that the adhesive layer is made of silicone rubber material.

[0016] The above-mentioned technical solution is adopted. In this solution, the silicone rubber itself has excellent high temperature resistance and can maintain the stability of its physical and chemical properties in a high temperature environment. Therefore, the adhesive layer is made of silicone rubber material, so that it can maintain the adhesive effect in a high temperature environment, thereby avoiding the loss of viscosity or leaving residual glue in a high temperature environment, resulting in the phenomenon of label falling off or difficulty in cleaning.

[0017] A further improvement of the technical solution of the utility model is that the edges of the top layer, the adhesive layer and the heat insulating layer are heat-sealed.

[0018] The above-mentioned technical solution is adopted, in which the edges of the top layer, the adhesive layer and the insulation layer are sealed with hot air to form a tight closed structure, and then the sealing strength of the edges can be enhanced to prevent the penetration of air, moisture or other harmful substances in a high temperature environment. Moreover, the edges after the heat sealing treatment are stronger and can better resist deformation or warping caused by high temperature.

[0019] A further improvement of the technical solution of the utility model is that a plurality of micro grooves are provided on the surface of the top layer.

[0020] The above technical solution is adopted. In this solution, in a high temperature environment, the top layer may produce thermal stress due to the temperature gradient. These stresses may cause the material to deform or crack. Then, a number of microgrooves are opened on the surface of the top layer to disperse these stresses and reduce stress concentration, thereby improving the high temperature stability of the top layer.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a multi-layer self-adhesive paper with high temperature resistance. A plurality of heat dissipation holes are provided in a microporous layer, and the heat dissipation holes are honeycomb-shaped, so that a large number of air layers and small spaces can be formed inside the microporous layer. Then, these air layers and small spaces can effectively hinder the conduction of heat, because air is a poor conductor of heat. Therefore, even in a high temperature environment, the honeycomb-shaped heat dissipation holes can significantly reduce the speed of heat transfer to the inside of the microporous layer, thereby improving the heat insulation effect. A plurality of placement grooves are provided above the aerogel felt layer, and then aerogel is filled in the inner cavity of the placement groove. Since aerogel is a material with an extremely low thermal conductivity coefficient, the aerogel is filled in the inner cavity of the placement groove, which can further reduce the conduction of heat and significantly enhance the heat insulation effect, thereby improving the high temperature resistance of the multi-layer self-adhesive paper.

[0023] 2. The utility model provides a multi-layer self-adhesive paper with high temperature resistance. A tear line is provided at the connection position between the connecting paper and the top layer, so that after the user uses the connecting paper to separate the top layer, the adhesive layer and the heat insulating layer from the bottom paper, the user can then separate the connecting paper from the top layer along the tear line. A heat reflective coating made of aluminum oxide material is coated on the surface of the micro-groove, so that the excellent heat reflective performance of the aluminum oxide coating can be utilized, and heat radiation in a high temperature environment can be effectively reflected, reducing the transfer of heat to the inside of the top layer, thereby helping to maintain the relative stability of the surface temperature of the top layer, preventing deformation, melting or strength reduction caused by high temperature, and further improving the quality of the multi-layer self-adhesive paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 It is a schematic diagram of the heat insulation layer assembly of the utility model;

[0028] Figure 4 It is a schematic diagram of the microporous heat insulation layer of the utility model;

[0029] Figure 5 It is a top-level schematic diagram of the utility model;

[0030] Figure 6 It is an enlarged schematic diagram of point A of the utility model;

[0031] In the figure: 1, bottom paper; 2, thermal insulation layer; 21, microporous layer; 211, heat dissipation hole; 22, aerogel felt layer; 221, placement groove; 3, adhesive layer; 4, top layer; 41, micro groove; 5, connecting paper; 51, tear line. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the embodiments:

[0033] Example 1

[0034] like Figure 1-6 As shown, the utility model provides a multi-layer self-adhesive paper with high temperature resistance function, including a base paper 1; a heat insulation layer 2 is covered on the base paper 1, the heat insulation layer 2 includes a microporous layer 21, the microporous layer 21 is adhered with an aerogel felt layer 22, the microporous layer 21 is provided with a plurality of heat dissipation holes 211, the heat dissipation holes 211 are honeycomb-shaped, a plurality of placement grooves 221 are provided above the aerogel felt layer 22, the inner cavity of the placement grooves 221 is filled with aerogel, an adhesive layer 3 is adhered above the aerogel felt layer 22, a top layer 4 is adhered above the adhesive layer 3, a connecting paper 5 is provided on one side of the top layer 4, and the connecting paper 5 is used to separate the top layer 4, the adhesive layer 3 and the heat insulation layer 2 from the base paper 1.

[0035] In this embodiment, the adhesive layer 3 can be protected by the base paper 1 to prevent external dust from contacting the adhesive layer 3 and affecting the adhesion of the adhesive layer 3. A plurality of heat dissipation holes 211 are provided on the microporous layer 21, so that the heat transfer speed to the inside of the microporous layer 21 can be reduced through the heat dissipation holes 211, thereby improving the thermal insulation effect. A plurality of heat dissipation holes 211 are provided above the aerogel felt layer 22, and then aerogel is filled in the inner cavity of the placement groove 221, so that the heat conduction can be further reduced and the thermal insulation effect can be significantly enhanced. The thermal insulation layer 2 can be connected to the top layer 4 through the adhesive layer 3, and the top layer 4, the adhesive layer 3 and the thermal insulation layer 2 can be easily separated from the base paper 1 through the connecting paper 5.

[0036] Example 2

[0037] like Figure 6 As shown, based on Example 1, the utility model provides a technical solution: preferably, a tear line 51 is provided at the connection position between the connecting paper 5 and the top layer 4, and the tear line 51 is arranged in an L shape.

[0038] In this embodiment, when the self-adhesive paper is needed, first, the user can hold the connecting paper 5 to drive the top layer 4 and the adhesive layer 3 as well as the insulating layer 2 to separate from the bottom paper 1, thereby removing the protection of the adhesive layer 3, and then stick the self-adhesive paper to the position where it needs to be stuck, and then tear the connecting paper 5 away from the top layer 4 along the tear line 51.

[0039] Example 3

[0040] like Figure 5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the surface of the top layer 4 is coated with a heat reflective coating made of aluminum oxide material, the top layer 4 is made of polyvinyl chloride material, and a plurality of micro grooves 41 are opened on the surface of the top layer 4.

[0041] In this embodiment, during use, a heat reflective coating made of aluminum oxide material is coated on the surface of the top layer 4, which can effectively reflect thermal radiation in a high temperature environment and reduce the transfer of heat to the inside of the top layer 4, thereby helping to maintain the surface temperature of the top layer 4 relatively stable. In addition, the top layer 4 is made of polyvinyl chloride material, which can give it good high temperature resistance and prevent it from deformation in a high temperature environment.

[0042] Example 4

[0043] like Figure 3 , Figure 4 As shown, based on Example 1, the utility model provides a technical solution: preferably, the adhesive layer 3 is made of silicone rubber material, and the edges of the top layer 4, the adhesive layer 3 and the insulation layer 2 are heat-sealed.

[0044] In this embodiment, part of the heat will be transferred to the adhesive layer 3 and the thermal insulation layer 2 through the top layer 4. Since the adhesive layer 3 is made of silicone rubber material, the adhesive layer 3 can maintain the adhesive effect in a high temperature environment to prevent the self-adhesive paper from falling off. The heat transferred to the aerogel felt layer 22 can be absorbed by the aerogel filled in the inner cavity of the placement groove 221. After part of the heat is transferred to the microporous layer 21, it can be absorbed by a number of heat dissipation holes 211, reducing the heat transfer to the outside, thereby improving its thermal insulation effect.

[0045] The working principle of the multi-layer self-adhesive paper with high temperature resistance function is described in detail below.

[0046] like Figure 1-6 As shown, when the self-adhesive paper is needed, first, the user can hold the connecting paper 5 to drive the top layer 4 and the adhesive layer 3 and the heat insulating layer 2 to separate from the bottom paper 1, release the protection of the adhesive layer 3, and then stick the self-adhesive paper to the position where it needs to be stuck, and then tear the connecting paper 5 away from the top layer 4 along the tear line 51;

[0047] During use, the top layer 4 is coated with a heat-reflective coating made of aluminum oxide material, which can effectively reflect heat radiation in a high-temperature environment and reduce the transfer of heat to the inside of the top layer 4, thereby helping to keep the surface temperature of the top layer 4 relatively stable. In addition, the top layer 4 is made of polyvinyl chloride material, which can make it have good high-temperature resistance and prevent it from deformation in a high-temperature environment.

[0048] Part of the heat will be transferred to the adhesive layer 3 and the thermal insulation layer 2 through the top layer 4. Since the adhesive layer 3 is made of silicone rubber material, the adhesive layer 3 can maintain its adhesive effect in a high temperature environment to prevent the self-adhesive paper from falling off. The heat transferred to the aerogel felt layer 22 can be absorbed by the aerogel filled in the inner cavity of the placement groove 221. After part of the heat is transferred to the microporous layer 21, it can be absorbed by a number of heat dissipation holes 211, reducing the heat transfer to the outside, thereby improving its thermal insulation effect.

[0049] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-layer self-adhesive paper with high temperature resistance, comprising a base paper (1); characterized in that: A heat insulation layer (2) is covered on the base paper (1), the heat insulation layer (2) comprises a microporous layer (21), an aerogel felt layer (22) is adhered to the microporous layer (21), a plurality of heat dissipation holes (211) are provided on the microporous layer (21), the heat dissipation holes (211) are honeycomb-shaped, a plurality of placement grooves (221) are provided on the aerogel felt layer (22), the inner cavity of the placement grooves (221) is filled with aerogel, an adhesive layer (3) is adhered on the aerogel felt layer (22), a top layer (4) is adhered on the adhesive layer (3), a connecting paper (5) is provided on one side of the top layer (4), and the connecting paper (5) is used to separate the top layer (4), the adhesive layer (3) and the heat insulation layer (2) from the base paper (1).

2. The multi-layer self-adhesive paper with high temperature resistance according to claim 1, characterized in that: A tear line (51) is provided at the connection position between the connecting paper (5) and the top layer (4), and the tear line (51) is arranged in an L shape.

3. The multi-layer self-adhesive paper with high temperature resistance according to claim 1, characterized in that: The surface of the top layer (4) is coated with a heat reflective coating made of aluminum oxide material.

4. The multi-layer self-adhesive paper with high temperature resistance according to claim 3, characterized in that: The top layer (4) is made of polyvinyl chloride material.

5. The multi-layer self-adhesive paper with high temperature resistance according to claim 1, characterized in that: The adhesive layer (3) is made of silicone rubber material.

6. The multi-layer self-adhesive paper with high temperature resistance according to claim 4, characterized in that: The edges of the top layer (4), the adhesive layer (3) and the heat insulation layer (2) are heat-sealed.

7. The multi-layer self-adhesive paper with high temperature resistance according to claim 6, characterized in that: A plurality of micro grooves (41) are formed on the surface of the top layer (4).

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