Ecological synthetic leather with antibacterial function

Abstract

The utility model provides a kind of ecological synthetic leather with antibacterial function.The ecological synthetic leather with antibacterial function includes: ecological synthetic leather body, the ecological synthetic leather body includes matrix layer, outer net layer, outer transition layer, outer surface layer, outer antibacterial layer, inner net layer, inner transition layer, inner surface layer and inner antibacterial layer, the outer net layer is set on the matrix layer, the outer transition layer is set on the outer net layer, the outer surface layer is set on the outer transition layer, the outer antibacterial layer is set on the outer surface layer, the inner net layer is set on the matrix layer, the inner transition layer is set on the inner net layer, the inner surface layer is set on the inner transition layer, and the inner antibacterial layer is set on the inner surface layer.The ecological synthetic leather with antibacterial function provided by the utility model has the advantages of antibacterial structure, good protection effect and high strength.

Description

Technical Field

[0001] This utility model relates to the field of eco-friendly synthetic leather technology, and in particular to an eco-friendly synthetic leather with antibacterial function. Background Technology

[0002] These are plastic products that mimic the composition and structure of natural leather and can serve as its substitute. They are typically made with an impregnated non-woven fabric as the mesh layer and a microporous polyurethane layer as the grain layer. Both sides closely resemble leather and possess a degree of breathability, making them closer to natural leather than ordinary synthetic leather. They are widely used in the production of shoes, boots, bags, and sports equipment.

[0003] However, existing eco-friendly synthetic leathers often lack antibacterial structures, resulting in poor antibacterial effects.

[0004] Therefore, it is necessary to provide an eco-friendly synthetic leather with antibacterial function to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the technical problem that existing eco-synthetic leathers with antibacterial functions often lack antibacterial structures and have poor antibacterial effects, this utility model provides an eco-synthetic leather with antibacterial functions.

[0006] The eco-friendly synthetic leather with antibacterial function provided by this utility model includes: an eco-friendly synthetic leather body, wherein the eco-friendly synthetic leather body includes a base layer, an outer mesh layer, an outer transition layer, an outer outer layer, an outer antibacterial layer, an inner mesh layer, an inner transition layer, an inner surface layer, and an inner antibacterial layer. The outer mesh layer is disposed on the base layer, the outer transition layer is disposed on the outer mesh layer, the outer outer layer is disposed on the outer transition layer, the outer antibacterial layer is disposed on the outer outer layer, the inner mesh layer is disposed on the base layer, the inner transition layer is disposed on the inner mesh layer, the inner surface layer is disposed on the inner transition layer, and the inner antibacterial layer is disposed on the inner surface layer.

[0007] Preferably, the eco-friendly synthetic leather body is provided with an edging, and the edging is provided with a stitching line, which is connected to the eco-friendly synthetic leather body.

[0008] Preferably, the matrix layer adopts a three-dimensional woven structure of microfiber, the outer mesh layer is made of non-woven fabric, and the inner mesh layer is made of woven fabric.

[0009] Preferably, both the outer transition layer and the inner transition layer are made of water-based polyurethane adhesive, and the thickness of the outer transition layer and the inner transition layer is 0.2 mm.

[0010] Preferably, the outer layer adopts a polyurethane film granular structure, and the inner layer adopts a microporous coating structure.

[0011] Preferably, the outer antibacterial layer is made of nano-silver antibacterial coating, and the inner antibacterial layer is made of graphene antibacterial coating.

[0012] Compared with related technologies, the eco-friendly synthetic leather with antibacterial function provided by this utility model has the following beneficial effects:

[0013] This invention provides an eco-friendly synthetic leather with antibacterial function. It uses a base layer as its core, with an outer layer system and an inner layer system constructed on both sides. The outer and inner mesh layers enhance the overall strength of the leather and form breathable channels through a three-dimensional interwoven structure. The outer and inner transition layers use a water-based solvent-free polyurethane adhesive, achieving environmental friendliness and pollution-free performance while improving interlayer bonding. The outer and inner surface layers simulate the feel of natural leather through a polyurethane film granular structure and microporous coating. The outer and inner antibacterial layers form durable antibacterial barriers on the outer and inner surfaces respectively through nano-silver and graphene antibacterial coatings. This structure achieves antibacterial protection through a double antibacterial layer design. Combined with the breathable channels of the mesh layer and the environmentally friendly adhesive of the transition layer, it significantly improves the antibacterial durability and safety of eco-friendly synthetic leather in scenarios such as medical protection, sports equipment, and automotive interiors, while maintaining its environmentally friendly characteristics such as zero VOC emissions and biodegradability. It effectively solves the technical problems of easy peeling and poor single-sided protection of traditional synthetic leather antibacterial coatings. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the eco-friendly synthetic leather with antibacterial function provided by this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0016] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown in the figure.

[0017] The labels in the diagram are: 1. Eco-friendly synthetic leather body; 2. Base layer; 3. Outer mesh layer; 4. Outer transition layer; 5. Outer surface layer; 6. Outer antibacterial layer; 7. Inner mesh layer; 8. Inner transition layer; 9. Inner surface layer; 10. Inner antibacterial layer; 11. Edge binding; 12. Seam line. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please refer to the following: Figure 1-3 ,in, Figure 1 A schematic diagram of a preferred embodiment of the eco-friendly synthetic leather with antibacterial function provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure; Figure 3 for Figure 2 The diagram shows an enlarged view of part A. The eco-friendly synthetic leather with antibacterial function includes: an eco-friendly synthetic leather body 1, which comprises a base layer 2, an outer mesh layer 3, an outer transition layer 4, an outer outer layer 5, an outer antibacterial layer 6, an inner mesh layer 7, an inner transition layer 8, an inner surface layer 9, and an inner antibacterial layer 10. The outer mesh layer 3 is disposed on the base layer 2, the outer transition layer 4 is disposed on the outer mesh layer 3, the outer outer layer 5 is disposed on the outer transition layer 4, the outer antibacterial layer 6 is disposed on the outer outer layer 5, the inner mesh layer 7 is disposed on the base layer 2, the inner transition layer 8 is disposed on the inner mesh layer 7, the inner surface layer 9 is disposed on the inner transition layer 8, and the inner antibacterial layer 10 is disposed on the inner surface layer 9. The base layer 2 is the core, and the outer and inner layer systems are constructed on both sides of it. The outer mesh layer 3 and the inner mesh layer 7 are connected by a three-dimensional intersection. The woven structure enhances the overall strength of the leather and forms breathable channels; the outer transition layer 4 and the inner transition layer 8 use water-based solvent-free polyurethane adhesive, which improves the interlayer bonding force while achieving environmental protection and pollution-free operation; the outer outer layer 5 and the inner inner layer 9 simulate the touch of natural leather through polyurethane film grain structure and microporous structure coating; the outer antibacterial layer 6 and the inner antibacterial layer 10 form a durable antibacterial barrier on the outer and inner surfaces respectively through nano-silver and graphene antibacterial coatings; this structure achieves antibacterial protection through the inner and outer double antibacterial layer design, combined with the breathable channels of the mesh layer and the environmentally friendly adhesive of the transition layer, while maintaining the environmentally friendly characteristics of eco-friendly synthetic leather such as zero VOC emissions and biodegradability, it significantly improves its antibacterial durability and safety of use in scenarios such as medical protection, sports equipment, and automotive interiors, effectively solving the technical problems of easy peeling and poor single-sided protection effect of traditional synthetic leather antibacterial coating.

[0020] The eco-friendly synthetic leather body 1 is provided with an edging 11, and a stitching line 12 is provided on the edging 11. The stitching line 12 is connected to the eco-friendly synthetic leather body 1. An edging 11 is added to the edge of the eco-friendly synthetic leather body 1, and the edging 11 is firmly connected to the eco-friendly synthetic leather body 1 through the stitching line 12. The edging 11 is made of environmentally friendly water-based polyurethane material of the same origin as the eco-friendly synthetic leather body 1. Its edge is formed by hot-melt pressing to form a seamless structure. Combined with the cross-locking process of high-strength polyester stitching line 12, it not only solves the technical defects of traditional synthetic leather edges that are prone to cracking and delamination, but also avoids the risk of VOCs release from adhesives through physical reinforcement.

[0021] The base layer 2 adopts a three-dimensional microfiber weaving structure, the outer mesh layer 3 is made of non-woven fabric, and the inner mesh layer 7 is made of woven fabric. The base layer 2 adopts a three-dimensional microfiber weaving structure, which forms a collagen fiber mesh support system similar to natural leather through the three-dimensional interweaving of bundled microfibers, giving it moisture absorption and breathability properties close to genuine leather while ensuring the strength of the leather body. The outer mesh layer 3 is made of non-woven fabric, which uses its random fiber distribution characteristics to construct multi-level pore channels, forming a dual protection mechanism of physical barrier and chemical antibacterial in synergy with the outer antibacterial layer 6. The inner mesh layer 7 is made of woven fabric, which enhances the dimensional stability of the leather body through the regular arrangement of warp and weft yarns.

[0022] Both the outer transition layer 4 and the inner transition layer 8 are made of water-based polyurethane adhesive. The thickness of the outer transition layer 4 and the inner transition layer 8 is 0.2 mm. Both the outer transition layer 4 and the inner transition layer 8 are made of water-based polyurethane adhesive. Through the hydrophilic groups in the molecular chain, they form chemical bonds with the adjacent layers, which improves the interlayer peel strength to more than 8.5 N / cm, which is 60% higher than that of traditional solvent-based adhesives.

[0023] The outer layer 5 adopts a polyurethane film granular structure, and the inner layer 9 adopts a microporous structure coating. The outer layer 5 adopts a polyurethane film granular structure, and a fine grain texture similar to natural leather is formed on the surface through a precision mold embossing process. Combined with the high gloss and wear resistance of polyurethane material, the appearance and texture of the leather are close to that of genuine leather and the scratch resistance is improved. The inner layer 9 adopts a microporous structure coating, and through water-based polyurethane foaming technology, through-holes with an average pore size of 3-5μm are formed. While maintaining the functional integrity of the antibacterial inner layer 10, it achieves one-way moisture permeability, effectively solving the problem of stuffiness and lack of breathability of traditional synthetic leather inner layers.

[0024] The outer antibacterial layer 6 is made of nano-silver antibacterial coating, and the inner antibacterial layer 10 is made of graphene antibacterial coating. The outer antibacterial layer 6 is made of nano-silver antibacterial coating. By uniformly loading silver particles with a particle size of 20-50nm into an aqueous polyurethane matrix, the strong oxidizing properties of silver ions are used to destroy the bacterial cell membrane structure, thereby achieving broad-spectrum and efficient killing of common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus on the outer surface. The inner antibacterial layer 10 is made of graphene antibacterial coating. The sharp edges of graphene physically pierce the bacterial cell wall, and its large specific surface area can efficiently adsorb and degrade bacterial metabolites, forming a dual antibacterial mechanism of physical destruction and chemical inhibition.

[0025] The working principle of the eco-friendly synthetic leather with antibacterial function provided by this utility model is as follows:

[0026] With the base layer 2 as the core, an outer layer system and an inner layer system are constructed on both sides of it. The outer mesh layer 3 and the inner mesh layer 7 enhance the overall strength of the leather and form a breathable channel through a three-dimensional interwoven structure. The outer transition layer 4 and the inner transition layer 8 use water-based solvent-free polyurethane adhesive, which improves the interlayer bonding force while achieving environmental protection and pollution-free operation. The outer surface layer 5 and the inner surface layer 9 simulate the touch of natural leather through a polyurethane film granular structure and microporous coating. The outer antibacterial layer 6 and the inner antibacterial layer 10 form a durable antibacterial barrier on the outer and inner surfaces respectively through nano-silver and graphene antibacterial coatings. This structure achieves antibacterial protection through the design of inner and outer double antibacterial layers. Combined with the breathable channel of the mesh layer and the environmentally friendly adhesive of the transition layer, it significantly improves the antibacterial durability and safety of use in medical protection, sports equipment, automotive interiors and other scenarios while maintaining the environmental protection characteristics of eco-friendly synthetic leather such as zero VOC emissions and biodegradability. It effectively solves the technical problems of easy peeling and poor single-sided protection effect of traditional synthetic leather antibacterial coating.

[0027] An edge banding 11 is added to the edge of the eco-synthetic leather body 1, and the edge banding 11 is firmly connected to the eco-synthetic leather body 1 by a stitching line 12. The edge banding 11 is made of environmentally friendly water-based polyurethane material of the same origin as the eco-synthetic leather body 1. Its edge is heat-melted and pressed to form a seamless structure. Combined with the cross-locking process of high-strength polyester stitching line 12, it not only solves the technical defects of traditional synthetic leather edges that are prone to cracking and delamination, but also avoids the risk of VOCs release from adhesives through physical reinforcement.

[0028] The base layer 2 adopts a three-dimensional woven structure of microfiber, which forms a collagen fiber mesh support system similar to natural leather through the three-dimensional interweaving of bundled microfibers, giving it moisture absorption and breathability properties close to genuine leather while ensuring the strength of the leather body; the outer mesh layer 3 is made of non-woven fabric, which uses its random fiber distribution characteristics to construct multi-level pore channels, and works with the outer antibacterial layer 6 to form a dual protection mechanism of physical barrier and chemical antibacterial; the inner mesh layer 7 is made of woven fabric, which enhances the dimensional stability of the leather body through the regular arrangement of warp and weft yarns;

[0029] Both the outer transition layer 4 and the inner transition layer 8 are made of water-based polyurethane adhesive. Through the hydrophilic groups in the molecular chain, they form chemical bonds with the adjacent layers, which improves the interlayer peel strength to more than 8.5 N / cm, which is 60% higher than that of traditional solvent-based adhesives.

[0030] The outer layer 5 uses a polyurethane film grain structure, which forms a fine grain texture similar to natural leather on the surface through a precision mold embossing process. Combined with the high gloss and wear resistance of polyurethane material, the appearance and texture of the leather are close to that of genuine leather and the scratch resistance is improved. The inner layer 9 uses a microporous structure coating, which forms through-holes with an average pore size of 3-5μm through water-based polyurethane foaming technology. While maintaining the functional integrity of the antibacterial inner layer 10, it achieves one-way moisture permeability, effectively solving the problem of stuffiness and lack of breathability of traditional synthetic leather inner layers.

[0031] The outer antibacterial layer 6 uses a nano-silver antibacterial coating. By uniformly loading silver particles with a particle size of 20-50nm into an aqueous polyurethane matrix, the strong oxidizing properties of silver ions are used to destroy the bacterial cell membrane structure, achieving broad-spectrum and efficient killing of common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus on the outer surface. The inner antibacterial layer 10 uses a graphene antibacterial coating. The sharp edges of graphene physically pierce the bacterial cell wall, and its large specific surface area can efficiently adsorb and degrade bacterial metabolites, forming a dual antibacterial mechanism of physical destruction and chemical inhibition.

[0032] Compared with related technologies, the eco-friendly synthetic leather with antibacterial function provided by this utility model has the following beneficial effects:

[0033] This invention provides an eco-friendly synthetic leather with antibacterial function. It uses a base layer 2 as its core, with an outer layer system and an inner layer system constructed on both sides. An outer mesh layer 3 and an inner mesh layer 7 enhance the overall strength of the leather and form breathable channels through a three-dimensional interwoven structure. An outer transition layer 4 and an inner transition layer 8 use a water-based solvent-free polyurethane adhesive, achieving environmental friendliness and pollution-free performance while improving interlayer bonding. An outer layer 5 and an inner layer 9 simulate the feel of natural leather through a polyurethane film granular structure and microporous coating. An outer antibacterial layer 6 and an inner antibacterial layer 10 form a durable antibacterial barrier on the outer and inner surfaces respectively through nano-silver and graphene antibacterial coatings. This structure achieves antibacterial protection through a double antibacterial layer design. Combined with the breathable channels of the mesh layer and the environmentally friendly adhesive of the transition layer, it significantly improves the antibacterial durability and safety of eco-friendly synthetic leather in scenarios such as medical protection, sports equipment, and automotive interiors, while maintaining its environmentally friendly characteristics such as zero VOC emissions and biodegradability. It effectively solves the technical problems of traditional synthetic leather antibacterial coatings being prone to peeling and having poor single-sided protection.

[0034] An edge banding 11 is added to the edge of the eco-synthetic leather body 1, and the edge banding 11 is firmly connected to the eco-synthetic leather body 1 by a stitching line 12. The edge banding 11 is made of environmentally friendly water-based polyurethane material of the same origin as the eco-synthetic leather body 1. Its edge is heat-melted and pressed to form a seamless structure. Combined with the cross-locking process of high-strength polyester stitching line 12, it not only solves the technical defects of traditional synthetic leather edges that are prone to cracking and delamination, but also avoids the risk of VOCs release from adhesives through physical reinforcement.

[0035] The base layer 2 adopts a three-dimensional woven structure of microfiber, which forms a collagen fiber mesh support system similar to natural leather through the three-dimensional interweaving of bundled microfibers, giving it moisture absorption and breathability properties close to genuine leather while ensuring the strength of the leather body; the outer mesh layer 3 is made of non-woven fabric, which uses its random fiber distribution characteristics to construct multi-level pore channels, and works with the outer antibacterial layer 6 to form a dual protection mechanism of physical barrier and chemical antibacterial; the inner mesh layer 7 is made of woven fabric, which enhances the dimensional stability of the leather body through the regular arrangement of warp and weft yarns;

[0036] Both the outer transition layer 4 and the inner transition layer 8 are made of water-based polyurethane adhesive. Through the hydrophilic groups in the molecular chain, they form chemical bonds with the adjacent layers, which improves the interlayer peel strength to more than 8.5 N / cm, which is 60% higher than that of traditional solvent-based adhesives.

[0037] The outer layer 5 uses a polyurethane film grain structure, which forms a fine grain texture similar to natural leather on the surface through a precision mold embossing process. Combined with the high gloss and wear resistance of polyurethane material, the appearance and texture of the leather are close to that of genuine leather and the scratch resistance is improved. The inner layer 9 uses a microporous structure coating, which forms through-holes with an average pore size of 3-5μm through water-based polyurethane foaming technology. While maintaining the functional integrity of the antibacterial inner layer 10, it achieves one-way moisture permeability, effectively solving the problem of stuffiness and lack of breathability of traditional synthetic leather inner layers.

[0038] The outer antibacterial layer 6 uses a nano-silver antibacterial coating. By uniformly loading silver particles with a particle size of 20-50nm into an aqueous polyurethane matrix, the strong oxidizing properties of silver ions are used to destroy the bacterial cell membrane structure, achieving broad-spectrum and efficient killing of common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus on the outer surface. The inner antibacterial layer 10 uses a graphene antibacterial coating. The sharp edges of graphene physically pierce the bacterial cell wall, and its large specific surface area can efficiently adsorb and degrade bacterial metabolites, forming a dual antibacterial mechanism of physical destruction and chemical inhibition.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An eco-friendly synthetic leather with antibacterial function, characterized in that, include: The eco-friendly synthetic leather body comprises a base layer, an outer mesh layer, an outer transition layer, an outer outer layer, an outer antibacterial layer, an inner mesh layer, an inner transition layer, an inner surface layer, and an inner antibacterial layer. The outer mesh layer is disposed on the base layer, the outer transition layer is disposed on the outer mesh layer, the outer outer layer is disposed on the outer transition layer, the outer antibacterial layer is disposed on the outer outer layer, the inner mesh layer is disposed on the base layer, the inner transition layer is disposed on the inner mesh layer, the inner surface layer is disposed on the inner transition layer, and the inner antibacterial layer is disposed on the inner surface layer.

2. The eco-friendly synthetic leather with antibacterial function according to claim 1, characterized in that, The eco-friendly synthetic leather body is provided with an edging, and the edging is provided with a stitching line, which is connected to the eco-friendly synthetic leather body.

3. The eco-friendly synthetic leather with antibacterial function according to claim 1, characterized in that, The matrix layer adopts a three-dimensional woven structure of microfiber, the outer mesh layer is made of non-woven fabric, and the inner mesh layer is made of woven fabric.

4. The eco-friendly synthetic leather with antibacterial function according to claim 1, characterized in that, Both the outer and inner transition layers are made of water-based solvent-free polyurethane adhesive, and the thickness of the outer and inner transition layers is 0.2 mm.

5. The eco-friendly synthetic leather with antibacterial function according to claim 1, characterized in that, The outer layer adopts a polyurethane film granular structure, and the inner layer adopts a microporous coating structure.

6. The eco-friendly synthetic leather with antibacterial function according to claim 1, characterized in that, The outer antibacterial layer is made of nano-silver antibacterial coating, and the inner antibacterial layer is made of graphene antibacterial coating.

Images