Light, warm-keeping and cold-resistant synthetic leather

Abstract

The utility model relates to light warm-keeping cold-resistant synthetic leather which sequentially comprises a bass layer, a warm-keeping material layer and a fine cloth layer from top to bottom, a dry method layer is compounded on the surface of the Bass layer; a dispensing layer for compounding the Bass layer and the thermal insulation material layer through dispensing is formed between the Bass layer and the thermal insulation material layer; a gluing layer for gluing and compounding the warm-keeping material layer and the fine cloth layer is formed between the warm-keeping material layer and the fine cloth layer. According to the novel synthetic leather, one side of the warm-keeping material layer is directly glued and compounded with the fine cloth layer through the cementing layer, and the other side of the warm-keeping material layer is glued and compounded with the Bass layer through the dispensing layer, so that the warm-keeping material layer can be effectively supported without adding other layer structures, and the surface and internal structures of the warm-keeping material layer are effectively protected; the physical warm-keeping performance of the warm-keeping material layer is kept to the maximum degree, so that the warm-keeping and light effects are achieved, lining matching does not need to be loaded in the traditional technology in the shoemaking application process, and the practical effect of directly reducing the labor cost and the time cost in the application process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of synthetic leather technology, specifically to a lightweight, warm, and cold-resistant synthetic leather. Background Technology

[0002] As an indispensable functional footwear choice for winter, insulated shoes primarily serve the purpose of keeping warm, while also providing a degree of decorative appeal. Currently, the main materials used in insulated shoes include natural materials such as cotton, animal fur, and down; synthetic materials such as insulating materials and silk floss; and technological materials such as electric heating. With rising economic levels, people are no longer satisfied with simple, traditional warm footwear. To better enjoy life, they are increasingly looking for new types of insulated shoes that are both lightweight and cold-resistant. Existing insulated shoe upper materials either prioritize warmth and cold resistance at the expense of lightness and comfort (resulting in bulkiness), or sacrifice warmth for lightness and comfort. In other words, current insulated shoe upper materials struggle to achieve a balance between warmth, cold resistance, and lightweight comfort. Furthermore, current insulated shoe materials are also less than satisfactory in terms of antibacterial properties, deodorization, and ease of cleaning.

[0003] In view of this, this case study conducted in-depth research on the above-mentioned issues and proposed a lightweight, warm, and cold-resistant synthetic leather, which led to this case. Utility Model Content

[0004] The purpose of this invention is to provide a lightweight, warm, and cold-resistant synthetic leather that combines excellent warmth retention with lightweight properties. In addition, the application of synthetic leather can also bring advantages such as saving materials and reducing labor costs.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A lightweight, warm, and cold-resistant synthetic leather comprises, from top to bottom, a base layer, a thermal insulation material layer, and a fine fabric layer; a dry-laid layer is laminated to the surface of the base layer; an adhesive layer is formed between the base layer and the thermal insulation material layer to bond the base layer and the thermal insulation material layer; and an adhesive layer is formed between the thermal insulation layer and the fine fabric layer to bond the thermal insulation layer and the fine fabric layer.

[0007] The base material of the base layer is a microfiber base fabric or a space-grade base fabric.

[0008] The insulation material layer is a superimposed insulation material with a thickness of 0.7-0.9 mm.

[0009] The adhesive layer is composed of a plurality of adhesive dots evenly distributed in a plane, with each adhesive dot having a thickness of 0.015-0.025 mm.

[0010] The thickness of the adhesive layer is 0.01-0.02 mm.

[0011] The fine cloth layer is a fine cloth with a thickness of 0.3-0.5 mm.

[0012] The advantages of this invention over existing technologies, achieved by adopting the above solution, are as follows: The synthetic leather mainly comprises a base layer, a thermal insulation layer, and a fine fabric layer. The thermal insulation layer (preferably a layered thermal insulation material) is directly bonded to the fine fabric layer on one side via an adhesive layer, and to the base layer on the other side via a dotted adhesive layer. This allows the thermal insulation layer to be effectively supported without additional layers, effectively protecting its surface and internal structure, and maximizing its physical thermal insulation performance. This achieves both warmth and lightweight properties, while also addressing the issue of foot odor and stuffiness even with prolonged wear. The thermal insulation material used in this product weighs only 1 / 4 the weight of other well-known thermal insulation materials, yet achieves the same thermal insulation effect. Furthermore, in shoe manufacturing applications, this product eliminates the need for an additional lining as in traditional techniques, directly reducing labor and time costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the synthetic leather of this utility model.

[0014] Base layer 1, dry layer 11, thermal insulation material layer 2, fine fabric layer 3;

[0015] Adhesive layer 41, adhesive layer 42. Detailed Implementation

[0016] The following detailed explanation of the specific implementation method will be provided.

[0017] This case involves a lightweight, warm, and cold-resistant synthetic leather, such as... Figure 1 As shown, from top to bottom there are a base layer 1, a thermal insulation material layer 2 and a fine cloth layer 3, and a dry layer 11 is laminated on the surface of the base layer 1.

[0018] A dotted adhesive layer 41 is formed between the base layer 1 and the insulation material layer 2. This dotted adhesive layer 41 bonds the base layer 1 and the insulation material layer 2 together, meaning that the base layer 1 and the insulation material layer 2 are bonded together as a single unit through the action of the dotted adhesive layer 41. The dotted adhesive layer 41 refers to a layer structure formed using existing dotted adhesive technology. Specifically, the dotted adhesive layer 41 is composed of a plurality of adhesive dots evenly distributed in a planar manner.

[0019] An adhesive layer 42 is formed between the thermal insulation material layer 2 and the fine fabric layer 3. This adhesive layer 42 bonds the thermal insulation material layer 2 and the fine fabric layer 3 together, meaning that the thermal insulation material layer 2 and the fine fabric layer 3 are bonded together as a whole through the action of the adhesive layer 42. The adhesive layer 42 is a fully adhesive layer structure.

[0020] In a preferred embodiment, the insulating material layer is a superimposed insulating material with a thickness of 0.7-0.9mm. This superimposed insulating material is the Y-Warm product manufactured by Beijing Superimposed Technology Co., Ltd. Due to its unique internal structure, this superimposed insulating material is easily affected by the interaction of temperature and pressure during application. At high temperatures, the superimposed insulating material gradually softens, and pressure can cause the internal porous structure to collapse and break down, resulting in damage to its insulating function. The higher the temperature, the lower the pressure it can withstand. Currently, superimposed insulating materials are used in thermal footwear applications using traditional quilting techniques. However, in quilting, the superimposed insulating leather and other outer and inner materials must be quilted in a relatively loose manner, because overly dense quilting will result in a stiff feel, and more importantly, overly dense stitching will cause the superimposed insulating material to lose its insulating performance. On the other hand, looser quilting will cause bulging in unsewn areas, preventing it from fitting snugly against the shoe wall. Therefore, to solve this problem, a quilted layer is placed in the middle to provide rigid support and also to protect the surface of the insulating material. The addition of a quilted layer and the need for an additional composite lining layer during shoemaking result in bulky, heavy, and uncomfortable warm shoes.

[0021] This invention further studies the application of superimposed thermal insulation materials. The temperature threshold of superimposed thermal insulation materials is approximately 90-100℃. Therefore, it proposes a composite layer between the superimposed thermal insulation material and the base layer using an adhesive layer (employing traditional adhesive application techniques). The surface temperature of this adhesive layer composite layer can be controlled within the temperature threshold range of the superimposed thermal insulation material. Similarly, the superimposed thermal insulation material is composited with a fine fabric layer using an adhesive layer; the surface temperature of this adhesive layer composite layer can also be controlled within the temperature threshold range of the superimposed thermal insulation material. Thus, after the two sides of the thermal insulation material layers (superimposed thermal insulation material) are bonded together, the internal physical structure of the superimposed thermal insulation material can be maximized to maintain and achieve optimal thermal insulation performance.

[0022] In this way, while ensuring the insulation function of the superimposed insulation material, one side is bonded to the base layer via a dot-adhesive layer, leaving space between them for better gas exchange. The other side is directly bonded to the fine fabric layer via an adhesive layer. The superimposed insulation material is effectively supported and protected inside. Therefore, under the same sewing conditions, the synthetic leather structure of this utility model can be used directly without the need for an additional quilted layer for support and protection. Therefore, compared to the cotton fabric layer, the dot-adhesive layer (approximately 0.02mm) process of this utility model is obviously lighter than cotton fabric. Moreover, after bonding the fine fabric layer, the synthetic leather can directly contact the human body, with a smooth touch. The resulting insulated shoes are warm and lightweight, providing an excellent wearing experience. In addition, the fine fabric bonding will save the factory the extra work of laminating the inner lining layer during shoe manufacturing, directly reducing the factory's shoe manufacturing costs.

[0023] In a preferred embodiment, the base material of the base layer 1 is a microfiber base material or aerospace base material, which has anti-siphon and breathable properties, thus improving the breathability of the new synthetic leather.

[0024] In a preferred embodiment, the adhesive layer 41 is composed of a plurality of adhesive dots evenly distributed in a plane, with each dot having a thickness of 0.015-0.025 mm, and an optimal thickness of 0.02 mm. This not only ensures that the adhesive layer 41 achieves integrated composite performance between the base layer 1 and the thermal insulation material layer 2, but also creates an appropriate space between them, thereby enhancing the thermal insulation function of the superimposed thermal insulation material.

[0025] In a preferred embodiment, the thickness of the adhesive layer 42 is 0.01-0.02 mm, with an optimal thickness of 0.016 mm. This ensures that the adhesive layer 42 achieves integrated composite performance of the thermal insulation material layer 2 and the fine fabric layer 3, taking into account structural compositeness, the thermal insulation and support properties of the thermal insulation material, and the overall lightweight nature of the synthetic leather.

[0026] In a preferred embodiment, the fine fabric layer 3 is a fine fabric with a thickness of 0.3-0.5 mm, with a preferred embodiment being 0.4 mm. This thickness of fine fabric, combined with the adhesive layer 42, achieves both support and lightweight effect, while also reducing material and process costs for the composite lining layer during shoe manufacturing.

[0027] The lightweight, warm, and cold-resistant synthetic leather of this invention is compared with the materials used in well-known warm shoe materials. Under the same warmth conditions, the thickness and weight of the two materials are compared as follows:

[0028] Thickness (mm) Weight (g / m²) Lightweight, warm, and cold-resistant synthetic leather 2.50-2.70 1000-1030 Well-known thermal shoe material 5.7+1 1157-1187

[0029] The thermal conductivity of this lightweight, warm, and cold-resistant synthetic leather was tested using different methods. The lower the thermal conductivity, the better the material's thermal insulation performance; thermal conductivity and insulation effect are inversely proportional. This is because heat is transferred more slowly in materials with low thermal conductivity, thus reducing heat loss. The thermal conductivity of conventional leather is between 0.18 and 0.19 W / (mK). The test results show that this lightweight, warm, and cold-resistant synthetic leather exhibits excellent thermal insulation performance.

[0030]

[0031] The following examples further illustrate the beneficial effects of this synthetic leather.

[0032] Example 1 illustrates the structure of the synthetic leather according to this invention. Testing showed that the thermal conductivity of the finished synthetic leather is 0.04 W / (mK), meeting the design requirements.

[0033] The difference between Example 2 and Example 1 is that the adhesive layer 41 is replaced with an adhesive layer 42, meaning that both sides of the thermal insulation material layer 2 are bonded together with adhesive layers. Testing showed that the thermal conductivity of the synthetic leather in Example 2 was 0.15 W / (mK), which does not meet the design requirements.

[0034] The difference between Example 3 and Example 1 is that Example 3 removes the adhesive layer 42 and the fine cloth layer 3. Testing showed that the thermal conductivity of the synthetic leather in Example 3 was 0.05 W / (mK), which is acceptable. However, because the fine cloth hot melt adhesive was not bonded to it, the surface of the insulating material was rough and had a noticeable sticky feel, making it unsuitable for direct contact with the human body. This does not meet design requirements. Furthermore, the insulating material layer of the synthetic leather lacked effective support and protection, making it prone to losing its insulating properties in shoemaking applications, resulting in poor applicability.

[0035] The technical problem to be solved by this utility model is to improve the problems of traditional thermal synthetic leather, such as bulkiness, difficulty in cleaning, stuffiness, and heavy weight. It provides a lightweight, warm and cold-resistant synthetic leather that is not only warm and lightweight, but also saves material and labor costs. Moreover, it improves the problems of bulkiness, heaviness, and stuffiness that are difficult to overcome in traditional synthetic leather.

[0036] This utility model features a lightweight, warm, and cold-resistant synthetic leather with excellent warmth retention. The fabric is soft and comfortable, and the surface can be customized with various textures to suit different needs. It also incorporates high-performance, environmentally friendly insulating materials, effectively combating extreme low temperatures while providing warmth and cold protection, and remaining lightweight and comfortable. This product can be directly used in shoe manufacturing without the need for an additional lining layer, achieving highly effective warmth, cold resistance, and antibacterial properties. It also saves on manufacturing processes and is environmentally friendly and energy-saving. This product is suitable for high-altitude outdoor sports shoes, children's warm shoes, and winter footwear series.

[0037] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims

1. A lightweight, warm, and cold-resistant synthetic leather, characterized in that: From top to bottom, there are a base layer, an insulation material layer, and a fine fabric layer; a dry-laid layer is laminated on the surface of the base layer; a dotted adhesive layer is formed between the base layer and the insulation material layer to bond the base layer and the insulation material layer; an adhesive layer is formed between the insulation material layer and the fine fabric layer to bond the insulation material layer and the fine fabric layer.

2. The lightweight, warm, and cold-resistant synthetic leather as described in claim 1, characterized in that: The base material of the base layer is a microfiber base fabric or a space-grade base fabric.

3. The lightweight, warm, and cold-resistant synthetic leather as described in claim 1, characterized in that: The insulation material layer is a superimposed insulation material with a thickness of 0.7-0.9 mm.

4. The lightweight, warm, and cold-resistant synthetic leather as described in claim 1, characterized in that: The adhesive layer is composed of a plurality of adhesive dots evenly distributed in a plane, with each adhesive dot having a thickness of 0.015-0.025 mm.

5. The lightweight, warm, and cold-resistant synthetic leather as described in claim 1, characterized in that: The thickness of the adhesive layer is 0.01-0.02 mm.

6. The lightweight, warm, and cold-resistant synthetic leather as described in claim 1, characterized in that: The fine cloth layer is a fine cloth with a thickness of 0.3-0.5 mm.

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