Easily degradable environment-friendly release paper

Abstract

The utility model provides easy-to-degrade environment-friendly release paper which comprises a base paper layer, glassine paper layers are arranged on the surfaces of the upper side and the lower side of the base paper layer respectively, release layers are arranged on the outer sides of the glassine paper layers, the base paper layer comprises base paper sheet bodies and base paper strip bodies, and the base paper sheet bodies are arranged at intervals. The base paper layer, the glassine paper layer and the adhesive layer are all made of degradable materials, so that the release paper has good degradation capacity, the glassine paper layer is used for replacing a lamination layer structurally, and the release paper does not need to be laminated when being manufactured, so that the release paper is more environment-friendly, and the service life of the release paper is prolonged. The release layer is made of solvent-free silicone oil, so that the environmental protection property of the release paper is further improved, the tearing line of the base paper strip body is matched with the easy-to-tear grooves in the upper surface and the lower surface of the release paper, so that when the release paper needs to be cut manually, the release paper is cut and torn through the positions of the tearing line and the easy-to-tear grooves, and other tools are not needed; therefore, the cutting convenience of the release paper in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of release paper manufacturing, in particular to an easily degradable and environmentally friendly release paper. Background Art

[0002] Degradable and environmentally friendly release paper is a release paper product that is based on traditional release paper and achieves faster and more complete degradation through improved production processes and material selection, thereby reducing the impact on the environment. Traditional release paper, such as glassine release paper, has excellent tensile strength and light transmittance, high flatness, and is widely used in printing, electronics, packaging, automobiles, medical and other industries. However, the adhesives and coating materials used in the production process often contain substances that are not easy to degrade. If these substances are not handled properly, new pollution problems may arise.

[0003] Based on the above situation, in the prior art, a patent with publication number CN216761130U discloses a degradable, environmentally friendly and odorless release paper, including a base layer, a first degradable layer is arranged on the base layer, a waterproof layer is arranged on the first degradable layer, two symmetrical grooves are provided on the waterproof layer, and protrusions are arranged inside the grooves. The utility model makes the internal structure of the release paper degradable by designing the first degradable layer and the second degradable layer, making the release paper more environmentally friendly. By designing the effect of the protrusions, the area of ​​the silicone oil layer can be reduced, thereby reducing the coating amount of silicone oil, making the release paper more environmentally friendly as a whole.

[0004] However, the release paper in the above patent has the problem of incomplete degradation and inconvenient manual cutting. In the technical solution of the above patent, a first degradation layer and a second degradation layer are added to the main structure of the release paper, so that the release paper has a certain degradation ability, but the materials used for its coating layer and waterproof layer are not degradable. At the same time, the release paper in the technical solution of the above patent does not have an easy-to-tear structure in structure, so that the release paper needs to be cut with the help of other tools, which reduces the convenience of using the release paper to a certain extent. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the utility model proposes an easily degradable environmentally friendly release paper. In order to further solve the above technical problems and meet practical needs, the specific technical solution is as follows:

[0006] A degradable environmentally friendly release paper comprises a base paper layer, wherein upper and lower surfaces of the base paper layer are respectively provided with glassine paper layers, a release layer is provided on the outer side of the glassine paper layer, the base paper layer comprises a base paper sheet body and a base paper strip body, the base paper sheet bodies are arranged at intervals, the base paper strip body is arranged between two adjacent base paper sheet bodies, a tear line is provided in the base paper strip body, an adhesive layer is provided between the base paper layer and the glassine paper layer, and a plurality of first grooves and a plurality of second grooves extending along the width direction of the glassine paper layer are respectively provided on both side surfaces of the glassine paper layer.

[0007] Furthermore, the first grooves are arranged on the surface of one side of the glassine paper layer adjacent to the base paper layer, and are arranged equidistantly and in parallel along the length direction of the release paper.

[0008] Furthermore, the second grooves are arranged on the surface of the glassine paper layer away from the base paper layer, and are arranged equidistantly and in parallel along the length direction of the release paper.

[0009] Furthermore, after the second groove is coated with a release agent, easy-tear grooves are formed on the upper and lower surfaces of the release paper.

[0010] Furthermore, the position of the easy-tear groove on the surface of the release paper corresponds to the position of the base paper strip body one by one, and is respectively located above and below the base paper strip body.

[0011] Furthermore, the release layer is a solvent-free silicone oil coating with a thickness of 40 μm-100 μm.

[0012] Furthermore, the adhesive layer is composed of an adhesive layer body made of PLA or PBSA material and a bactericidal functional layer uniformly distributed on the upper and lower surfaces of the adhesive layer body. The thickness of the adhesive layer body is 50μm-80μm, and the thickness of the bactericidal functional layer is 10μm-20μm.

[0013] The beneficial effects of the utility model are:

[0014] The utility model has good degradability, environmental protection and convenience. The base paper layer, the glassine paper layer and the adhesive layer are all made of degradable materials, so that the release paper has good degradation ability. In terms of structure, by using the glassine paper layer instead of the coating layer, the release paper does not need to be coated during production, making the release paper more environmentally friendly. The release layer uses solvent-free silicone oil to further increase the environmental protection of the release paper. The tear line of the base paper strip body and the easy-tear grooves on the upper and lower surfaces of the release paper cooperate, so that when the release paper needs to be manually cut, the position of the tear line and the easy-tear groove is used to split and tear the release paper, without the help of other tools, thereby increasing the convenience of cutting the release paper when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a cross-sectional view in the thickness direction of the utility model.

[0017] Figure 3 This is a schematic diagram of the base paper layer structure of the utility model.

[0018] Figure 4 It is a schematic diagram of the adhesive layer structure of the utility model.

[0019] Figure numerals: base paper layer 1, base paper sheet body 11, base paper strip body 12, tear line 13, glassine paper layer 2, first groove 21, second groove 22, release layer 3, adhesive layer 4, adhesive layer body 41, sterilization functional layer 42, easy-tear groove 5. DETAILED DESCRIPTION

[0020] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0021] like Figures 1 to 3 As shown, the utility model provides a technical solution: an easily degradable environmentally friendly release paper, comprising a base paper layer 1, glassine paper layers 2 are respectively arranged on the upper and lower surfaces of the base paper layer 1, and a release layer 3 is arranged on the outer side of the glassine paper layer 2. The base paper layer 1 comprises a base paper sheet 11 and a base paper strip 12, the base paper sheets 11 are arranged at intervals, the base paper strip 12 is arranged between two adjacent base paper sheets 11, and a tear line 13 is arranged in the base paper strip 12, an adhesive layer 4 is arranged between the base paper layer 1 and the glassine paper layer 2, and a plurality of first grooves 21 and a plurality of second grooves 22 extending along the width direction of the glassine paper layer 2 are respectively arranged on the two side surfaces of the glassine paper layer 2.

[0022] The base paper layer 1, glassine paper layer 2 and adhesive layer 4 of the utility model are all degradable materials, so that the release paper has good degradation ability and can be quickly degraded under natural conditions. In terms of structure, the glassine paper layer 2 is used to replace the coating layer on the structure of traditional release paper, so that the release paper does not need to be coated during production, making the release paper more environmentally friendly. The release layer 3 uses solvent-free silicone oil to further increase the environmental friendliness of the release paper. The tear line 13 of the base paper strip body 12 and the easy-tear grooves 5 on the upper and lower surfaces of the release paper cooperate, so that when the release paper needs to be manually intercepted, the position of the tear line 13 and the easy-tear groove 5 can be used to split and tear the release paper without the help of other tools, thereby increasing the convenience of using the release paper.

[0023] Using glassine paper layer 2 to replace the coating layer on the structure of traditional release paper has good feasibility and environmental protection advantages. The main function of the coating layer is to give paper specific properties, such as waterproof and oil-proof. Glassine paper undergoes two steps of calendering and silicone oil coating during the production process, which makes the glassine paper itself have these properties. Therefore, a similar effect can be achieved without a coating layer. The coating layer of traditional release paper usually uses non-degradable materials such as polyethylene PE. Therefore, by using glassine paper layer 2 to replace the coating layer on the structure of traditional release paper, the release paper is more environmentally friendly.

[0024] The thickness of the base paper layer 1 of the utility model is 100 μm-150 μm, and the thickness of the glassine paper layer 2 is 80 μm-100 μm, so that the release paper is thinner as a whole, and can maintain high softness, so that it can fit the surface of the object and reduce the generation of internal bubbles.

[0025] like Figure 1 and Figure 3 The base paper layer 1 has the same width as the glassine paper layer 2, and the base paper layer 1 is sandwiched between the two glassine paper layers 2. The base paper layer 1 is divided into a base paper sheet 11 and a base paper strip 12. The base paper sheet 11 and the base paper strip 12 are arranged parallel and alternately along the length direction of the release paper. The base paper layer 1 can be made of kraft paper, wood pulp paper and other types of paper. A discontinuously disconnected tear line 13 is arranged inside the base paper strip 12. The shape of the tear line 13 can be a straight line, a tooth shape or a wavy shape, etc. The tear line 13 is a discontinuously disconnected dotted line structure, and the broken part of the tear line 13 penetrates the base paper strip 12 along the thickness direction of the base paper strip 12.

[0026] The release paper of the utility model is a double-sided release paper, which has a release effect on both sides, can reflect a stronger functional effect, can meet the needs of release on both sides at the same time, and improves the use efficiency. At the same time, both sides of the double-sided release paper have a release layer 3, so that the double-sided release paper can be moisture-proof and oil-proof, and can effectively prevent the product from being affected by moisture and oil during the manufacturing or storage process.

[0027] When making release paper, first, a second groove 22 is pressed out on the upper surface of the glassine paper layer 2 and a first groove 21 is pressed out on the lower surface by a creasing machine, and a tear line 13 is cut on the base paper strip 12 by a punching device. Then, the glassine paper layer 2 is bonded to the upper and lower surfaces of the base paper layer 1 by an adhesive layer 4 to obtain an intermediate. The intermediate is placed in a coating device, and silicone oil is coated on the upper and lower surfaces of the intermediate respectively. After heating and curing, a finished release paper product is obtained.

[0028] The specific method for bonding the glassine paper layer 2 to the upper and lower surfaces of the base paper layer 1 is as follows: first, the glassine paper layer 2 on one side of the base paper layer 1 is used as the bottom layer, and the side of the glassine paper layer 2 having the first groove 21 faces the base paper layer 1, and then the adhesive is sprayed on the side of the glassine paper layer 2 having the first groove 21 to form an adhesive layer 4, and then the base paper sheet body 11 and the base paper strip body 12 are alternately applied on the upper surface of the adhesive layer 4 to form the base paper layer 1, and then in the same way, another adhesive layer 4 and another glassine paper layer 2 are superimposed and bonded to the upper surface of the base paper layer 1 to obtain an intermediate.

[0029] As another preferred embodiment of the present invention, Figure 2 As shown, the first grooves 21 are arranged on the surface of the glassine paper layer 2 adjacent to the base paper layer 1 and are arranged equidistantly and in parallel along the length direction of the release paper.

[0030] The first groove 21 is used to increase the connection strength between the glassine paper layer 2 and the base paper layer 1. The first groove 21 is in the shape of a long strip. A plurality of first grooves 21 are equidistantly and parallelly distributed on the surface of the glassine paper layer 2 on the side adjacent to the base paper layer 1. The groove body of the first groove 21 extends along the width direction of the glassine paper layer 2, thereby forming a continuous wavy structure on the surface of the glassine paper layer 2 on the side adjacent to the base paper layer 1. This wavy structure can increase the contact area between the adhesive layer 4 and the surface of the glassine paper layer 2 on the side adjacent to the base paper layer 1, thereby increasing the connection strength between the glassine paper layer 2 and the base paper layer 1, so that the glassine paper layer 2 can be firmly bonded to the upper surface of the base paper layer 1 through the adhesive layer 4.

[0031] As another preferred embodiment of the present invention, Figure 2 As shown, the second grooves 22 are arranged on the surface of the glassine paper layer 2 away from the base paper layer 1, and are equidistant and parallel along the length direction of the release paper. After the second grooves 22 are coated with the release agent, easy-tear grooves 5 are formed on the upper and lower surfaces of the release paper.

[0032] The second groove 22 is used to form an easy-tear groove 5 on the surface of the release paper. When making the release paper, it is necessary to apply a release agent on the surface of the glassine paper layer 2 away from the base paper layer 1. After the release agent is dried and solidified, an easy-tear groove 5 is formed on the surface of the release paper. The groove body of the second groove 22 extends along the width direction of the glassine paper layer 2, so the formed easy-tear groove 5 also extends along the width direction of the release paper, so that the release paper can be easily torn off manually through the easy-tear groove 5 and the tear line 13, thereby increasing the convenience of using the release paper.

[0033] As another preferred embodiment of the present invention, Figure 2 As shown, the position of the easy-tear groove 5 on the surface of the release paper corresponds to the position of the base paper strip 12 one by one, and is located above and below the base paper strip 12 respectively.

[0034] The tearing grooves 5 on the upper and lower surfaces of the release paper and the tearing line 13 in the base paper strip 12 together constitute the tearing structure of the release paper. The tearing grooves 5 are located above and below the base paper strip 12, and correspond to the position of the tearing line 13. When tearing the release paper, the user first determines the tearing position through the tearing groove 5, and then places both hands on both sides of one end of the tearing groove 5 to pinch the release paper. Then, the user moves both hands in the opposite direction to the front and back of the body, respectively, and applies a tearing force to the position of the tearing groove 5. Under the guidance of the groove body of the tearing groove 5, the tearing force tears the release paper along the tearing line 13 and the groove body of the tearing groove 5, so that the user can easily complete the manual cutting of the release paper, which increases the convenience of cutting the release paper.

[0035] As another preferred embodiment of the utility model, the release layer 3 is a solvent-free silicone oil coating with a thickness of 40μm-100μm. The solvent-free silicone oil is a silicone oil that does not contain an organic solvent. In the utility model, the release layer 3 is directly coated on the surface of the glassine paper layer 2. The release layer 3 mainly plays a protective and isolating role in the release paper. The solvent-free silicone oil has good adhesion and weather resistance. At the same time, the solvent-free silicone oil does not produce harmful volatile organic compounds, so it can further increase the environmental friendliness of the release paper.

[0036] As another preferred embodiment of the utility model, the adhesive layer 4 is composed of an adhesive layer body 41 made of PLA or PBSA material and a bactericidal functional layer 42 evenly distributed on the upper and lower surfaces of the adhesive layer body 41. The thickness of the adhesive layer body 41 is 50μm-80μm, and the thickness of the bactericidal functional layer 42 is 10μm-20μm.

[0037] PLA material or PBSA material are both degradable materials, which can be degraded in the natural environment and can reduce pollution to the environment; PLA material is polylactic acid, which is directly condensed from lactic acid. Lactic acid is usually obtained by crushing shell crops such as corn, extracting starch, and then making the starch into unrefined glucose. Therefore, the adhesive layer body 41 made of PLA material is good for the environment. PBSA material is polybutylene succinate-adipate, which belongs to aliphatic polyester biodegradable plastics. PBSA material has better toughness and degradation rate. Better toughness can increase the structural strength of the adhesive layer 4, making the adhesive layer 4 more firmly bonded to the base paper layer 1 and the glassine paper layer 2. Better degradation rate makes the adhesive layer 4 decomposed and metabolized by various microorganisms or enzymes in animals and plants in nature, and finally decomposed into carbon dioxide and water, reflecting the environmental friendliness of PBSA material.

[0038] The bactericidal functional layer 42 is a nanosilver particle layer. The nanosilver particles enable the release paper to have a certain antibacterial and sterilization ability, thereby preventing the base paper layer 1 and the glassine paper layer 2 of the release paper from forming mold spots when exposed to moisture. The particle size range of the nanosilver particles is 10-100nm. The nanosilver particles are integrated into the upper and lower surfaces of the adhesive layer body 41, thereby forming a bactericidal functional layer 42 with a clear hierarchical structure on the upper and lower surfaces of the adhesive layer body 41, respectively, while not affecting the adhesion of the adhesive layer 4 to the base paper layer 1 and the glassine paper layer 2.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A biodegradable environmentally friendly release paper, comprising a base paper layer (1), characterized in that: Glassine paper layers (2) are respectively arranged on the upper and lower surfaces of the base paper layer (1), and a release layer (3) is arranged on the outer side of the glassine paper layer (2). The base paper layer (1) comprises a base paper sheet (11) and a base paper strip (12), the base paper sheets (11) are arranged at intervals, the base paper strip (12) is arranged between two adjacent base paper sheets (11), and a tear line (13) is arranged in the base paper strip (12). An adhesive layer (4) is arranged between the base paper layer (1) and the glassine paper layer (2), and a plurality of first grooves (21) and a plurality of second grooves (22) extending in the width direction of the glassine paper layer (2) are respectively arranged on the two side surfaces of the glassine paper layer (2).

2. The easily degradable environmentally friendly release paper according to claim 1, characterized in that: The first grooves (21) are arranged on the surface of the glassine paper layer (2) on one side adjacent to the base paper layer (1), and are arranged equidistantly and in parallel along the length direction of the release paper.

3. The easily degradable environmentally friendly release paper according to claim 1, characterized in that: The second grooves (22) are arranged on the surface of the glassine paper layer (2) on a side away from the base paper layer (1), and are arranged equidistantly and in parallel along the length direction of the release paper.

4. The easily degradable environmentally friendly release paper according to claim 3, characterized in that: After the second groove (22) is coated with a release agent, easy-tear grooves (5) are formed on the upper and lower surfaces of the release paper.

5. The easily degradable environmentally friendly release paper according to claim 4, characterized in that: The position of the easy-tear groove (5) on the surface of the release paper corresponds to the position of the base paper strip (12) one by one, and is located above and below the base paper strip (12) respectively.

6. The easily degradable environmentally friendly release paper according to claim 1, characterized in that: The release layer (3) is a solvent-free silicone oil coating with a thickness of 40 μm-100 μm.

7. The easily degradable environmentally friendly release paper according to claim 1, characterized in that: The adhesive layer (4) is composed of an adhesive layer body (41) made of PLA or PBSA material and a bactericidal functional layer (42) evenly distributed on the upper and lower surfaces of the adhesive layer body (41); the thickness of the adhesive layer body (41) is 50 μm-80 μm, and the thickness of the bactericidal functional layer (42) is 10 μm-20 μm.

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