Thermal insulation warm-keeping fabric
Patent Information
- Application Number
- CN202522510072.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-26
AI Technical Summary
Traditional down lining fabrics are prone to down leakage during use, affecting the fabric's uniform warmth retention.
The fabric is coated with a foaming process to create arc-shaped warming protrusions on the surface and inner layers. The inner layer is equipped with limiting grooves and limiting strips. Combined with polyester profiled yarn and graphene yarn weaving, the friction and antibacterial properties are enhanced, and a microporous structure is formed to keep warm and prevent down from slipping.
It effectively prevents down from escaping, maintains the fabric's even warmth, improves softness, comfort, and antibacterial properties, and enhances the fabric's breathability and down-proof effect.
Smart Images
Figure CN224928660U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of textile technology, and more specifically, to a thermal insulation fabric. Background Technology
[0002] Fabric is usually woven from several yarns, so the characteristics of fabric are determined by the characteristics of the yarns that weave it.
[0003] Some fabrics are not only used to make outer garment fabrics, but also to make lining fabrics. In down jacket fabrics, the lining fabric is in direct contact with the down, thus protecting the down. However, the surface of traditional lining fabrics is relatively smooth, and the down wrapped in the lining fabric is prone to leakage during the use of the fabric, affecting the overall uniform warmth retention of the fabric.
[0004] Therefore, a new solution is needed to address this problem. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a heat-insulating and heat-preserving fabric.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A thermal insulation fabric includes a surface layer and an inner layer stitched together. The surface layer has several thermal insulation protrusions (I) formed on both sides of its thickness direction through a foaming and pore-forming coating process. The inner layer, near the surface layer, has several thermal insulation protrusions (II) formed on its side through a foaming and pore-forming coating process, which abut against the thermal insulation protrusions (I). The cross-sectional shape of both thermal insulation protrusions (I and II) is arc-shaped, and their diameters are between 1mm and 2mm. Each thermal insulation protrusion (II) is located between adjacent thermal insulation protrusions (I). A contact layer is fixedly connected to the side of the inner layer away from the surface layer, and several limiting grooves are formed on the contact layer. Several limiting strips are fixedly connected to the side of the inner layer away from the surface layer, and these limiting strips abut against the four inner walls of the limiting grooves. The limiting strips are composed of several thermal insulation fibers.
[0007] The present invention is further configured such that: the thickness of the contact layer is less than the thickness of the inner layer, and the surface roughness of the contact layer is greater than the surface roughness of the inner layer.
[0008] The present invention is further configured such that the length and width of the limiting groove are both greater than the distance between adjacent limiting grooves, and the contact layer is woven from polyester profiled yarn with a cross-shaped cross section.
[0009] The present invention is further configured such that: a plurality of the thermal fleece is fixedly connected to the inner layer on the side away from the outer layer by a flocking process, and the thermal fleece is a polyester irregular fiber with a cross-shaped cross section.
[0010] The present invention is further configured such that both the outer layer and the inner layer are woven from polyester yarn and graphene yarn.
[0011] In summary, this utility model has the following beneficial effects: the plurality of heat-insulating protrusions one and two formed by the foaming and pore-forming coating process contain a plurality of micropores filled with air. Since air is a poor conductor of heat, the arrangement of the plurality of heat-insulating protrusions one and two can ensure the heat-insulating effect of the fabric. The arrangement of the plurality of limiting grooves can ensure the limiting effect of the plurality of down feathers. Furthermore, the plurality of heat-insulating down feathers will rub against the plurality of down feathers. During the friction process, a certain amount of static electricity will be generated between the heat-insulating down feathers and the down feathers, preventing the plurality of down feathers from escaping from the limiting grooves, thus ensuring the overall uniform heat-insulating effect of the fabric. Attached Figure Description
[0012] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the inner layer structure in this utility model.
[0013] In the diagram: 1. Surface layer; 2. Inner layer; 3. Insulation protrusion one; 4. Insulation protrusion two; 5. Contact layer; 6. Limiting groove; 7. Limiting strip. Detailed Implementation
[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0015] A type of thermal insulation fabric, such as Figure 1 As shown, the structure includes a surface layer 1 and an inner layer 2 that are stitched together. The surface layer 1 has several insulating protrusions 3 formed on both sides of its thickness direction using a foaming and pore-forming coating process. The inner layer 2, near the surface layer 1, has several insulating protrusions 4 that abut against the insulating protrusions 3 formed using the same process. The foaming and pore-forming coating process involves first attaching a PU slurry containing a foaming agent to release paper, then placing the release paper in an oven. In the oven, the slurry solidifies and undergoes a foaming reaction, forming several protrusions with a microporous structure on the release paper. The solidified film is then laminated onto the surface layer using a hot-pressing technique. The outer layer 1 has several heat-insulating protrusions 3 on both sides and the inner layer 2 on one side, and the inner layer 2 has several heat-insulating protrusions 4 on one side. The cross-sectional shape of the heat-insulating protrusions 3 formed by the above process is all arc-shaped, and the diameters between adjacent heat-insulating protrusions 3 are all different. The heat-insulating protrusions 3 and 4 formed by the foaming process have a large number of air-filled micropores inside. Since air is a poor conductor of heat, the setting of several heat-insulating protrusions 3 and 4 can slow down the conduction of cold air from the outside to the inside, ensuring the good heat-insulating effect of the fabric.
[0016] like Figure 1 As shown, the second insulating protrusion 4 is located between adjacent first insulating protrusions 3. Since the diameters of the first insulating protrusions 3 and the second insulating protrusions 4 are irregular, when the second insulating protrusion 4 abuts against the outer peripheral wall of the adjacent first insulating protrusion 3, they will obstruct each other, thus limiting the sliding between the inner layer 2 and the outer layer 1. At the same time, after the first insulating protrusions 3 and the second insulating protrusions 4 abut, several cavities for still air to be retained will be formed between the inner layer 2 and the outer layer 1, preventing cold air from passing through the fabric. At the same time, it can also block heat loss from the side closest to the body surface, enhancing the overall breathability of the fabric. The diameters of the first and second warming protrusions are between 1mm and 2mm. By controlling the diameter, the overall thickness and stiffness of the fabric are reduced while ensuring the presence of air inside. This allows the fabric to deform with the movement of the body or the direction of external force, ensuring the softness and comfort of the fabric during use. Both the outer layer 1 and the inner layer 2 are woven from polyester yarn and graphene yarn, utilizing the high knot strength of polyester yarn. The structural strength and abrasion resistance ensure the overall lifespan of the fabric, while the addition of graphene allows the fabric to also have good antibacterial effects, thereby increasing the fabric's versatility. Polyester yarn and graphene yarn are twisted in a twisting machine to form a 30D composite yarn. By controlling the yarn diameter, a 0.7mm thick outer layer 1 and inner layer 2 are woven together, with a thermal conductivity of 0.008. By reducing the fabric's thermal conductivity, the amount of heat that can escape from the fabric is reduced, thereby ensuring the fabric's heat insulation performance and preventing... The exchange of hot and cold air on both sides of the fabric, after the addition of the PU film, can ensure that the overall moisture permeability of the fabric is 8000g / (m²·24h). While ensuring the warmth effect, some water vapor attached to the fabric can be discharged to the outside, preventing water vapor from adhering to the down and keeping the down in a fluffy and dry state. In addition, the outer layer 1 and inner layer 2, which are processed by foaming and pore-forming coating technology, have good low-temperature resistance, allowing the fabric to maintain its performance stably at a temperature of -60°C.
[0017] like Figure 1 and Figure 2As shown, the inner layer 2, away from the outer layer 1, has a contact layer 5 sewn together by a sewing machine. The thickness of the contact layer 5 is less than that of the inner layer 2, thereby reducing the overall thickness and weight of the fabric and allowing the fabric to deform better. Several limiting grooves 6 are cut along the thickness direction of the contact layer 5 using a laser cutting machine. The four inner walls of the limiting grooves 6 form a retention space between the inner layer and the inner layer, ensuring that the down is evenly retained in all parts of the fabric while reducing the phenomenon of down leakage during human movement. A limiting strip 7 is provided on the side of the inner layer 2 away from the outer layer 1. The four outer peripheral walls of the limiting strip 7 abut against the four inner walls of the limiting grooves 6. The limiting strip 7 is composed of several insulating fleece fibers fixed to the inner layer 2 using a flocking process. The insulating fleece fibers are made of polyester profiled fibers with a cross-shaped cross section. The addition of several insulating fleece fibers increases the surface roughness of the inner layer 2, thereby increasing the friction between the insulating fleece and the down, thus providing restraint for the down feathers. The fact that dry down escapes from the storage space enhances the overall down-proof effect of the fabric. The length and width of the limiting groove 6 are both greater than the distance between adjacent limiting grooves 6, thus increasing the amount of down that can be accommodated in the storage space. Since the limiting strip 7 is only set around the perimeter of the storage space, it ensures the limiting effect of some insulating down on the down while preventing a large area of adhesive from adhering to the inner layer 2 during the flocking process, which would increase the hardness of the inner layer 2 and block the pores formed by the weaving of the inner layer 2. This enhances the comfort of the fabric during use. The contact layer 5 is woven from polyester profiled yarn with a cross-shaped cross section. Therefore, the surface roughness of the contact layer 5 is greater than that of the inner layer 2, which also increases the resistance encountered by the down when moving on the contact layer 5. This allows the down that cannot enter the storage space to experience greater resistance when it comes into contact with the contact layer 5, ensuring the down-proof effect of the fabric and allowing the fabric to maintain a good heat insulation effect at all times.
[0018] When the fabric needs to be made, the composite yarn is placed in a water jet loom to weave the inner layer 2 and the outer layer 1. Then, a PU film formed by foaming and pore-forming coating process is laminated on both sides of the outer layer 1 and one side of the inner layer 2, so that several heat-insulating protrusions 1 3 and several heat-insulating protrusions 2 4 on the PU film can be formed on the outer layer 1 and the inner layer 2. The polyester profiled yarn is placed in a water jet loom to weave the contact layer 5. Several limiting grooves 6 are cut on the contact layer 5 by a laser cutting machine. First, the contact layer 5 is sewn onto the inner layer 2 using a sewing machine. Then, the heat-insulating fleece is fixed onto the inner layer 2 using a flocking machine. Finally, the inner layer 2 and the outer layer 1 are sewn together by a sewing machine.
[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A thermal insulation fabric, comprising an outer layer (1) and an inner layer (2) sewn together, characterized in that: The outer layer (1) has several heat-insulating protrusions (3) formed on both sides of its thickness direction by a foaming and pore-forming coating process. The inner layer (2) has several heat-insulating protrusions (4) formed on the side of its surface layer (1) that abut against the heat-insulating protrusions (3) by a foaming and pore-forming coating process. The cross-sectional shape of the heat-insulating protrusions (3) and (4) is arc-shaped, and the diameter of the heat-insulating protrusions (3) and (4) is between 1 mm and 2 mm. Between mm, the second heat-insulating protrusion (4) is located between adjacent first heat-insulating protrusions (3). The inner layer (2) is fixedly connected to a contact layer (5) on the side away from the outer layer (1). The contact layer (5) is provided with several limiting grooves (6). The inner layer (2) is fixedly connected to several limiting strips (7) on the side away from the outer layer (1). The limiting strips (7) abut against the four inner walls of the limiting grooves (6). The limiting strips (7) are composed of several heat-insulating fleece.
2. The thermal insulation fabric according to claim 1, characterized in that: The thickness of the contact layer (5) is less than the thickness of the inner layer (2), and the surface roughness of the contact layer (5) is greater than that of the inner layer (2).
3. The thermal insulation fabric according to claim 1, characterized in that: The length and width of the limiting groove (6) are both greater than the distance between adjacent limiting grooves (6), and the contact layer (5) is woven from polyester profiled yarn with a cross-shaped cross section.
4. The thermal insulation fabric according to claim 1, characterized in that: Several of the aforementioned thermal fleece are fixedly connected to the inner layer (2) on the side away from the outer layer (1) by flocking process, and the thermal fleece is set as polyester irregular fiber with a cross-shaped cross section.
5. The thermal insulation fabric according to claim 1, characterized in that: Both the outer layer (1) and the inner layer (2) are woven from polyester yarn and graphene yarn.