A tear-resistant plastic substitute paper

Abstract

The utility model proposes a tear-resistant plastic substitute paper, comprising a paper layer, wherein an antibacterial layer is arranged on the lower surface of the paper layer, a second waterproof layer is coated on the lower surface of the antibacterial layer, a fiber layer is arranged on the upper surface of the paper layer, a first waterproof layer is coated on the upper surface of the fiber layer, the fiber layer comprises a first fiber layer and a second fiber layer arranged up and down, a plurality of first fibers are arranged inside the first fiber layer, and a plurality of second fibers are arranged in the second fiber layer; the utility model structurally arranges the first fiber layer and the second fiber layer composed of different materials, so that the plastic substitute paper has good tear resistance, and the release paper has good waterproof performance by cooperating the first waterproof layer on the upper surface of the plastic substitute paper with the second waterproof layer on the lower surface, and the antibacterial layer is arranged on the upper surface of the paper layer, and the antibacterial layer can protect the paper layer to prevent the plastic substitute paper from getting moldy during long-term use.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic substitute paper manufacturing, in particular to tear-resistant plastic substitute paper. Background Art

[0002] The main goal of plastic-free paper is to serve as a substitute for traditional plastic products to reduce plastic pollution and promote sustainable development. However, traditional plastics are widely used in packaging, transportation and many other fields due to their excellent physical properties, especially tear resistance. In order to replace traditional plastics, plastic-free paper must have similar physical properties, especially tear resistance, to ensure sufficient strength and durability in various application scenarios. Plastic-free paper may be used in various practical scenarios, such as packaging, handbags, folders, etc. In these applications, the material usually needs to withstand a certain degree of stretching, twisting and tearing. If the tear resistance of plastic-free paper is insufficient, it is easy to be damaged or torn during use, which not only affects the appearance, but also may reduce its ability to protect the contents.

[0003] Based on the above situation, in the prior art, a patent with publication number CN114481674A discloses a production process for plastic-substitute paper, and the specific process steps are: refining and beating the raw pulp; sending the pulp after refining and beating into a pre-papermaking tank, adding degradable temperature-regulating chemical fiber into the pre-papermaking tank, dehydrating the pulp into shape, and then drying it for the first time, applying wax or silicone oil to the surface of the dehydrated and dried pulp. The plastic-substitute paper produced in the above process has the introduction of degradable temperature-regulating chemical fiber into it, thereby increasing the tear resistance and tear resistance of the plastic-substitute paper to a certain extent.

[0004] However, the plastic substitute paper in this patent still has some room for improvement in light of actual conditions. The fibers used to increase the tear and tear resistance of the plastic substitute paper are of a single type, and the fibers are distributed in the plastic substitute paper in a disordered state, which makes the tear and tear resistance of the plastic substitute paper insufficient. Utility Model Content

[0005] In view of the technical defects existing in the background technology, the utility model proposes a tear-resistant plastic substitute paper. In order to further solve the above technical problems and meet practical needs, the specific technical solution is as follows:

[0006] A tear-resistant plastic-substitute paper comprises a paper layer, wherein an antibacterial layer is provided on the lower surface of the paper layer, wherein the lower surface of the antibacterial layer is coated with a second waterproof layer, wherein a fiber layer is provided on the upper surface of the paper layer, wherein the upper surface of the fiber layer is coated with a first waterproof layer, wherein the fiber layer comprises a first fiber layer and a second fiber layer arranged up and down, wherein a plurality of first fibers in a mesh structure are provided in the first fiber layer, and a plurality of second fibers in a mesh structure are provided in the second fiber layer.

[0007] Furthermore, the first fibers are arranged side by side along the length direction of the plastic paper inside the first fiber layer, and are intertwined and woven with each other up and down to form a first network structure, and a plurality of first fiber knots are formed at the nodes where the first fibers are intertwined and woven with each other.

[0008] Furthermore, the second fibers are arranged side by side in the width direction of the plastic paper inside the second fiber layer, and are intertwined and woven with each other up and down to form a second network structure, and a plurality of second fiber knots are formed at the nodes where the second fibers are intertwined and woven with each other.

[0009] Furthermore, the first fiber layer and the second fiber layer are overlapped up and down, and an adhesive mass is provided at the overlapping portion of the first fiber knot and the second fiber knot, and the adhesive mass bonds and fixes the overlapping portion of the first fiber knot and the second fiber knot.

[0010] Furthermore, the first waterproof layer and the second waterproof layer are PBAT film layers with a thickness of 50 μm-60 μm.

[0011] Furthermore, the antibacterial layer is a nano silver coating with a thickness of 30 μm-40 μm.

[0012] Furthermore, the first fiber is a carbon fiber with a diameter of 100-200 microns, and the second fiber is a glass fiber with a diameter of 100-200 microns.

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

[0014] The utility model structurally arranges a first fiber layer and a second fiber layer composed of different materials, so that the plastic-free paper has good tear resistance performance; the first fibers are arranged parallel to each other along the length direction of the plastic-free paper in the first fiber layer, and are interwoven to form a mesh structure, so that the plastic-free paper has good tear resistance performance in the width direction; the second fibers are arranged parallel to each other along the width direction of the plastic-free paper in the second fiber layer, and are interwoven to form a mesh structure, so that the plastic-free paper has good tear resistance performance in the length direction; the first waterproof layer on the upper surface of the plastic-free paper cooperates with the second waterproof layer on the lower surface, so that the release paper has good waterproof performance; an antibacterial layer is arranged on the upper surface of the paper layer, and the antibacterial layer can protect the paper layer to prevent the plastic-free paper from getting moldy during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the fiber layer structure of the utility model.

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

[0018] Figure 4 This is a schematic diagram of the second fiber layer structure of the utility model.

[0019] Figure numerals: first waterproof layer 1, fiber layer 2, first fiber layer 21, first fibers 211, first mesh structure 212, first fiber knots 213, second fiber layer 22, second fibers 221, second mesh structure 222, second fiber knots 223, viscose balls 23, paper layer 3, antibacterial layer 4, second waterproof layer 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 4 As shown, the utility model provides a technical solution: a tear-resistant plastic-substitute paper, comprising a paper layer 3, an antibacterial layer 4 is provided on the lower surface of the paper layer 3, a second waterproof layer 5 is coated on the lower surface of the antibacterial layer 4, a fiber layer 2 is provided on the upper surface of the paper layer 3, a first waterproof layer 1 is coated on the upper surface of the fiber layer 2, the fiber layer 2 comprises a first fiber layer 21 and a second fiber layer 22 arranged up and down, a plurality of first fibers 211 in a mesh structure are provided in the first fiber layer 21, and a plurality of second fibers 221 in a mesh structure are provided in the second fiber layer 22.

[0022] The plastic substitute paper of the utility model has good tear resistance in structure. The first fiber 211 is woven in the first fiber layer 21 to form a first mesh structure 212, so that the plastic substitute paper has good tear resistance in the width direction. At the same time, the second fiber 221 is woven in the second fiber layer 22 to form a second mesh structure 222, so that the plastic substitute paper has good tear resistance in the length direction. The first fiber knot 213 of the first fiber 211 and the second fiber knot 223 of the second fiber 221 are connected by the adhesive group 23. , so that the first mesh structure 212 and the second mesh structure 222 have good structural integrity, thereby further increasing the tear resistance of the plastic paper. The setting of the antibacterial layer 4 can structurally protect the paper layer 3 to prevent the paper layer 3 from mildewing during use, thereby affecting the use of the plastic paper. The first waterproof layer 1 and the second waterproof layer 5 on the plastic paper structure can prevent external moisture from penetrating from the upper and lower surfaces of the plastic paper into the interior of the plastic paper, thereby increasing the protection of the paper layer 3 and increasing the service life of the plastic paper.

[0023] As a preferred embodiment of the present invention, Figures 2 to 4As shown, the first fibers 211 are arranged side by side inside the first fiber layer 21 along the length direction of the plastic paper, and are interlaced and interwoven with each other up and down to form a first network structure 212, and a plurality of first fiber knots 213 are formed at the nodes where the first fibers 211 are interlaced and interwoven with each other; the second fibers 221 are arranged side by side inside the second fiber layer 22 along the width direction of the plastic paper, and are interlaced and interwoven with each other up and down to form a second network structure 222, and a plurality of second fiber knots 223 are formed at the nodes where the second fibers 221 are interlaced and interwoven with each other; the first fiber layer 21 and the second fiber layer 22 are overlapped with each other up and down, and an adhesive ball 23 is provided at the overlapping part of the first fiber knot 213 and the second fiber knot 223, and the adhesive ball 23 bonds and fixes the overlapping part of the first fiber knot 213 and the second fiber knot 223.

[0024] The first fiber layer 21 and the second fiber layer 22 of the utility model can increase the tear resistance of the plastic paper. The second mesh structure 222 and the first mesh structure 212 form a stable connection relationship between the fibers inside each other. Since the connection between the first fibers 211 and the second fibers 221 in their corresponding hierarchical structures is tighter and more complex, when torn by external force, the first fibers 211 and the second fibers 221 can disperse the force and reduce the situation where a single fiber is subjected to excessive force, thereby improving the overall tear resistance.

[0025] When constructing the first mesh structure 212, a first fiber 211 is first bent to form a plurality of "Z"-shaped bent structures, and then a second first fiber 211 is woven up and down in an alternating manner on the bent structure portion of the first first fiber 211. At the same time, the second first fiber 211 itself is also bent to form a plurality of "Z"-shaped bent structures identical to the first fiber 211, and the weaving is performed in a similar manner to obtain the first mesh structure 212. The second mesh structure 222 is obtained by weaving the second fiber 221 in the same manner as described above.

[0026] Then the first mesh structure 212 and the second mesh structure 222 are overlapped and bonded at the overlapped portion with an adhesive. After the adhesive dries, an adhesive mass 23 can be formed at the overlapped portion, thereby forming an effective connection between the first mesh structure 212 and the second mesh structure 222. The tearing forces in different directions exerted on the first mesh structure 212 and the second mesh structure 222 can be transmitted and dispersed between each other through the adhesive mass 23, thereby further increasing the tear resistance of the plastic-free paper.

[0027] The first fibers 211 in the first mesh structure 212 are oriented along the length direction of the plastic paper. Therefore, the mesh of the first mesh structure 212 will be deformed when the plastic paper is torn in the width direction. At the same time, the tensile force in the width direction is dispersed and transmitted to each first fiber 211 through the first fiber knots 213. When the tearing force in the width direction disappears, the mesh of the first mesh structure 212 returns to its original state, thereby making the plastic paper tear-resistant in the width direction.

[0028] Similarly, the second fibers 221 in the second mesh structure 222 are oriented along the width direction of the plastic paper. Therefore, the mesh of the second mesh structure 222 will be deformed when the plastic paper is torn in the length direction. At the same time, the tension in the length direction is dispersed and transmitted to each second fiber 221 through the second fiber knots 223. When the tearing force in the length direction disappears, the mesh of the first mesh structure 212 returns to its original state, thereby making the plastic paper tear-resistant in the length direction.

[0029] As another preferred embodiment of the present invention, the first fiber 211 is a carbon fiber with a diameter of 100-200 microns, and the second fiber 221 is a glass fiber with a diameter of 100-200 microns.

[0030] The first fiber 211 is set as carbon fiber and the second fiber 221 is set as glass fiber, and their diameters are controlled to be 100-200 microns, which can effectively improve the strength and durability of the first mesh structure 212 and the second mesh structure 222, thereby enhancing the tear resistance of the plastic-free paper and having good tear resistance. The carbon fiber has high strength and modulus, can provide a certain tensile strength for the plastic-free paper, and is woven to form the first mesh structure 212, which can effectively resist the tear force in the length direction. At the same time, the tension in the length direction is dispersed to each first fiber 211 through the first fiber knot 213, thereby enhancing the tear resistance of the plastic-free paper in the length direction. The glass fiber also has high strength and durability, but its performance is different from that of the carbon fiber. In the second mesh structure 222, the second fiber 221 of the glass fiber is arranged along the width direction of the plastic-free paper, which can provide effective resistance to the tear force in the width direction, and disperse the tension to each second fiber 221 through the second fiber knot 223, so that the plastic-free paper also has tear resistance in the width direction.

[0031] The overlapping parts of the fiber knots of the first mesh structure 212 and the second mesh structure 222 are overlapped and connected by an adhesive to form an adhesive ball 23. Since both carbon fiber and glass fiber have high surface energy and good adhesion, this connection method can effectively transmit tearing forces in different directions, thereby further increasing the tear resistance of the plastic-substitute paper. At the same time, both carbon fiber and glass fiber have good dimensional stability and are not easily affected by changes in temperature and humidity, thereby maintaining the shape and size of the plastic-substitute paper during use. The combined use of carbon fiber and glass fiber can give play to the complementary advantages of the two materials. The high strength and light weight of carbon fiber enable the plastic-substitute paper to have a lower weight while maintaining high performance, while the higher impact resistance and heat resistance of glass fiber increase the practicality of the plastic-substitute paper in different environments.

[0032] In terms of the weaving density of the first mesh structure 212 and the second mesh structure 222, the arrangement density of the first fibers 211 is less than that of the second fibers 221, that is, within the same area, the number of meshes in the first mesh structure 212 is less than that of the second mesh structure 222. The first fibers 211 of carbon fiber have the characteristics of high strength and light weight, and the second fibers 221 of glass fiber are weaker in strength than carbon fiber. In order to ensure that the plastic-free paper can have the same tear resistance in the length and width directions, the arrangement density of the second fibers 221 is increased when constructing the second mesh structure 222. At the same time, because glass fiber has anti-cut properties, after increasing the arrangement density of glass fiber, the anti-cut ability of the second mesh structure 222 woven with glass fiber is increased, so that when the plastic-free paper is used as packaging, it can better protect the products inside it, thereby increasing the practicality of the plastic-free paper.

[0033] As another preferred embodiment of the present invention, the first waterproof layer 1 and the second waterproof layer 5 are PBAT film layers with a thickness of 50 μm-60 μm.

[0034] PBAT material has good film-forming properties and can be applied to the upper and lower surfaces of the plastic paper by roller coating or spraying, respectively, to form a first waterproof layer 1 and a second waterproof layer 5, respectively. The first waterproof layer 1 in the structure of the plastic paper can ensure that the paper layer 3 and the fiber layer 2 are not directly penetrated by external liquids, protect the integrity and functionality of the internal materials of the plastic paper, and prevent the plastic paper from softening, degrading or discoloring due to contact with external moisture or other liquids, thereby extending the service life of the plastic paper. The second waterproof layer 5 forms a double protection with the first waterproof layer 1, ensuring that the plastic paper can maintain waterproof performance under liquid contact in any direction.

[0035] PBAT is a thermoplastic material with good biodegradability. PBAT is a copolymer of butylene adipate and butylene terephthalate, which can be decomposed by microorganisms into substances that are harmless to the environment. This characteristic enables the plastic-free paper to reduce pollution to the environment after being discarded, meeting environmental protection requirements. After the PBAT material is formed into a film, it has a certain strength and toughness, which can ensure that the second waterproof layer 5 and the first waterproof layer 1 are not easily damaged when torn or rubbed by external forces.

[0036] As another preferred embodiment of the present invention, the antibacterial layer 4 is a nano silver coating with a thickness of 30 μm-40 μm.

[0037] As a highly effective antibacterial agent, nanosilver can inhibit or kill microorganisms such as bacteria and viruses. In addition, the nanosilver coating also has a long-lasting and stable antibacterial effect, which can continue to exert its antibacterial effect for a long time, effectively extending the service life of the plastic substitute paper. Therefore, the nanosilver coating is selected as the antibacterial layer 4, which can not only provide antibacterial protection, but also ensure that the plastic substitute paper can be kept clean and hygienic in a variety of application scenarios.

[0038] 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 tear-resistant plastic-replacement paper, comprising a paper layer (3), characterized in that: The lower surface of the paper layer (3) is provided with an antibacterial layer (4), the lower surface of the antibacterial layer (4) is coated with a second waterproof layer (5), the upper surface of the paper layer (3) is provided with a fiber layer (2), the upper surface of the fiber layer (2) is coated with a first waterproof layer (1), the fiber layer (2) comprises a first fiber layer (21) and a second fiber layer (22) arranged one above the other, the first fiber layer (21) is provided with a plurality of first fibers (211) in a mesh structure, and the second fiber layer (22) is provided with a plurality of second fibers (221) in a mesh structure.

2. The tear-resistant plastic-substitute paper according to claim 1, characterized in that: The first fibers (211) are arranged side by side along the length direction of the plastic paper inside the first fiber layer (21), and are interlaced and interwoven with each other up and down to form a first network structure (212), and a plurality of first fiber knots (213) are formed at the nodes where the first fibers (211) are interlaced and interwoven with each other.

3. The tear-resistant plastic-substitute paper according to claim 2, characterized in that: The second fibers (221) are arranged side by side in the width direction of the plastic paper inside the second fiber layer (22), and are interlaced and interwoven with each other up and down to form a second network structure (222), and a plurality of second fiber knots (223) are formed at the nodes where the second fibers (221) are interlaced and interwoven with each other.

4. The tear-resistant plastic-substitute paper according to claim 3, characterized in that: The first fiber layer (21) and the second fiber layer (22) are arranged to overlap each other up and down, and an adhesive mass (23) is provided at the overlapping portion of the first fiber knot (213) and the second fiber knot (223), and the adhesive mass (23) adheres and fixes the overlapping portion of the first fiber knot (213) and the second fiber knot (223).

5. The tear-resistant plastic substitute paper according to claim 1, characterized in that: The first waterproof layer (1) and the second waterproof layer (5) are PBAT film layers with a thickness of 50 μm-60 μm.

6. The tear-resistant plastic-substitute paper according to claim 1, characterized in that: The antibacterial layer (4) is a nano silver coating with a thickness of 30 μm-40 μm.

7. The tear-resistant plastic-substitute paper according to claim 1, characterized in that: The first fibers (211) are carbon fibers with a diameter of 100-200 microns, and the second fibers (221) are glass fibers with a diameter of 100-200 microns.

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