Differential shrinkage polyester fabric

By using heterogeneous shrinkage fibers and a multi-layer composite structure, the problem of insufficient breathability and softness of polyester fabrics when windproofing has been solved, resulting in a polyester fabric with high comfort and warmth.

CN223961860UActive Publication Date: 2026-03-03ZHEJIANG HENGBAIHUA CHEM FIBER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

While existing polyester fabrics offer wind protection, they lack breathability and softness, causing wearers to feel stuffy and uncomfortable against the wind.

Method used

It adopts a combination structure of differential shrinkage fibers, irregularly shaped fibers, hollow fibers, separator layers, skin-friendly cotton layers, inner down, foam, etc., combined with materials such as coral fleece, windproof cotton, wool, hollow cotton, and cotton to form a multi-layer composite fabric. By utilizing the shrinkage properties of differential shrinkage fibers and the warmth-retaining properties of hollow fibers, the comfort and warmth of the fabric are enhanced.

Benefits of technology

It achieves significant improvement in the breathability and softness of the fabric while maintaining windproof performance, providing better wearing comfort and warmth, and adapting to changes in different ambient temperatures and humidity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of chemical fiber manufacturing, and discloses a different-shrinkage polyester fabric which comprises fabric outer-layer cotton, different-shrinkage fibers are fixedly connected to the top end of the interior of the fabric outer-layer cotton, profiled fibers are fixedly connected to the bottoms of the different-shrinkage fibers, hollow fibers are fixedly connected to the bottoms of the profiled fibers, and the hollow fibers are fixedly connected to the bottoms of the hollow fibers. The bottom side of the interior of the fabric outer layer cotton is fixedly connected with a first separation layer, the bottom end of the interior of the first separation layer is fixedly connected with a skin-friendly cotton layer, the top of the first separation layer is fixedly connected with a second separation layer, and the middle of the second separation layer is fixedly connected with internal down. According to the fabric, the outer layer cotton 1 of the fabric is soft in touch and gives a comfortable initial feeling to people, the different shrinkage fibers 3 and the special-shaped fibers 4 enable the fabric to have unique texture and elasticity and prevent the fabric from being too stiff, and the down feather 9 and the foam 10 in the fabric can keep warm and enable clothes to have certain softness and elasticity at the same time.
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Description

Technical Field

[0001] This utility model relates to the field of chemical fiber manufacturing technology, and in particular to a polyester fabric with different shrinkage. Background Technology

[0002] With the continuous advancement of textile technology, people's demands for fabrics have shifted from basic covering and warmth to higher levels of aesthetics, comfort, and functionality. Building upon traditional polyester fabrics, researchers began exploring how to create novel fabrics by altering fiber properties and structure. Differential shrinkage polyester fabric emerged from this exploration of innovative fabrics. The increased automation and precision of the textile industry have also provided technical support for the development of differential shrinkage polyester fabric. High-precision spinning equipment, advanced weaving machinery, and precise finishing equipment enable accurate control of the mixing, spinning, weaving, and finishing processes of fibers with different shrinkage rates, thereby achieving stable production of differential shrinkage effects. In the fashion industry, consumers' demands for personalized and fashionable clothing and home textiles are growing. The unique appearance of differential shrinkage polyester fabric perfectly meets the fashion world's pursuit of novel fabrics. It provides clothing and home textile designers with more creative space to attract consumers who pursue fashion and individuality. At the same time, the easy-care characteristics of differential shrinkage polyester fabric give it a significant advantage in fast-paced modern life, making it suitable for everyday wear and home use, and thus it is well-received in the market.

[0003] A search revealed Chinese Patent Publication No. CN220763766U, which discloses a polyester fabric comprising an inner layer, a hydrophilic membrane, a polyester fabric layer, and a waterproof and breathable membrane. The inner layer is composed of acetate filaments and polyester filaments interwoven in a satin weave, with the acetate filament side facing the user. The surfaces of the acetate filaments and polyester filaments have grooves along their length. The polyester fabric layer is composed of UV-resistant polyester filaments interwoven. This invention relates to a polyester fabric where the acetate fibers used in the inner layer are hydrophobic, and the grooves on its surface effectively wick away moisture through a wicking effect. Furthermore, the hydrophilic membrane quickly absorbs moisture from the inner layer, keeping it dry and improving wearing comfort. The use of multiple layers of fabric and membranes can effectively improve the windproof effect of polyester fabric. However, while providing windproof protection, the fabric does not adequately ensure comfort. In order to achieve the windproof effect, the fabric structure may be relatively tight, which affects breathability and softness. Wearers may feel stuffy and uncomfortable due to skin friction while being windproof. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a differential shrinkage polyester fabric, which aims to improve the existing technology where the fabric provides wind protection but does not adequately ensure comfort. In order to achieve the windproof effect, the fabric structure may be relatively tight, which affects breathability and softness. Wearers may feel stuffy and uncomfortable due to skin friction while being windproof.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a differential shrinkage polyester fabric, comprising an outer cotton layer, a differential shrinkage fiber fixedly connected to the top of the inner part of the outer cotton layer, a shaped fiber fixedly connected to the bottom of the differential shrinkage fiber, a hollow fiber fixedly connected to the bottom of the shaped fiber, a first separator layer fixedly connected to the bottom of the inner part of the outer cotton layer, a skin-friendly cotton layer fixedly connected to the bottom of the inner part of the first separator layer, a second separator layer fixedly connected to the top of the first separator layer, an inner down feather fixedly connected to the middle of the second separator layer, foam fixedly connected to the top of the inner part of the second separator layer, and the bottom of the foam fixedly connected to the top of the inner down feather. A warming mechanism is provided inside the outer cotton layer to improve the fabric's warmth retention.

[0006] Through the above technical solution: Different-shaped fibers possess unique shrinkage properties, capable of shrinking to varying degrees according to changes in external temperature or humidity. These fibers provide additional support and elasticity. Hollow fibers, being hollow inside, offer excellent insulation and a lightweight feel. The first separating layer effectively separates the different functional fiber layers. A skin-friendly cotton layer is fixedly connected to the bottom of the first separating layer to ensure comfort when the fabric is in contact with the skin. A second separating layer is fixedly connected to the top of the first separating layer, further separating the different functional layers within the fabric. An inner down layer, with excellent warmth retention, is fixedly connected to the middle of the second separating layer. A layer of foam, providing additional cushioning and warmth, is fixedly connected to the top of the second separating layer. The bottom of the foam is fixedly connected to the top of the inner down layer, ensuring a tight bond and enhancing the warmth retention.

[0007] As a further description of the above technical solution:

[0008] The insulation mechanism includes coral fleece, the bottom of which is fixedly connected to the top of the outer cotton layer of the fabric. A windproof cotton layer is fixedly connected to the front side of the inner top of the outer cotton layer of the fabric. Wool is fixedly connected to the bottom of the windproof cotton layer. Hollow fiber is fixedly connected to the inner bottom of the second separator layer. Cotton is fixedly connected to the inner top of the first separator layer.

[0009] Through the above technical solution: the bottom of the coral fleece material of the insulation mechanism is fixedly connected to the top of the outer cotton layer of the fabric, which enhances the overall warmth of the insulation mechanism and also ensures the stability and durability of the materials. The windproof cotton can effectively block the invasion of cold winds from the outside, thereby further improving the warmth performance of the insulation mechanism. The wool material allows the insulation mechanism to provide good comfort while keeping warm. The lightness and good heat retention of the hollow cotton make the insulation mechanism lightweight while also having excellent warmth.

[0010] As a further description of the above technical solution:

[0011] A waterproof and breathable layer is fixedly connected to the top of the second separator layer.

[0012] Through the above technical solution, the waterproof and breathable layer can effectively prevent moisture penetration while allowing air circulation, thus providing a dry and comfortable microclimate for the internal environment.

[0013] As a further description of the above technical solution:

[0014] Modal fabric is fixedly connected to the top of the skin-friendly cotton layer.

[0015] Through the above technical solution, the combination of modal fabric and skin-friendly cotton layer allows users to enjoy the soft touch of modal fabric while also experiencing the natural comfort of the skin-friendly cotton layer, thus obtaining a better wearing experience in daily life.

[0016] As a further description of the above technical solution:

[0017] The outer cotton layer of the fabric is fixedly connected to the top left and right sides with decorative items, and both decorative items are designed symmetrically.

[0018] Through the above technical solutions, the decorations can be of various shapes and patterns, which can not only attract visual attention, but also emphasize the center line of the fabric, thereby visually lengthening the wearer's figure and achieving the dual effect of beauty and practicality.

[0019] As a further description of the above technical solution:

[0020] The top of the outer cotton layer of the fabric has multiple mesh structures.

[0021] Through the above technical solutions, these meshes not only add breathability to the fabric, but also give it a unique visual effect.

[0022] As a further description of the above technical solution:

[0023] A label is fixedly attached to the top right side of the outer cotton layer of the fabric.

[0024] Through the above technical solutions, the label not only serves a decorative purpose, but also provides information about the fabric composition, washing instructions, and manufacturer information.

[0025] As a further description of the above technical solution:

[0026] Antibacterial fibers are fixedly connected to the bottom of the hollow fiber.

[0027] Through the above technical solutions, antibacterial fibers ensure the stability of the fiber structure and long-term antibacterial effect.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the outer cotton layer of the fabric has a relatively soft touch, presenting a natural cotton appearance and giving people a relatively comfortable initial feeling. Different shrinkage fibers and different shaped fibers can give the fabric a unique texture and elasticity, avoiding the fabric from being too stiff. Hollow fibers increase the fluffiness of the fabric. The skin-friendly cotton layer is in direct contact with the skin, and its soft texture can provide good skin-friendliness. The inner down and foam can provide warmth while also giving the garment a certain degree of softness and elasticity.

[0030] 2. In this utility model, coral fleece effectively prevents heat loss, windproof cotton blocks cold air and wind, thereby greatly improving the overall insulation efficiency of the fabric combination. Wool fibers provide insulation and warmth, and can still maintain a certain level of warmth in humid environments. Hollow fiber effectively prevents heat conduction, and cotton also provides good insulation and gives people a warm and comfortable feeling. The combined effect of these materials improves the insulation effect of the shrinkage fabric. Attached Figure Description

[0031] Figure 1 A perspective view of the front side of the outer cotton layer of a polyester fabric with varying shrinkage according to this utility model.

[0032] Figure 2 This is a top view of a coral fleece-like polyester fabric with varying shrinkage, as proposed in this utility model.

[0033] Figure 3 A diagram showing the hollow fiber structure of a differential shrinkage polyester fabric proposed in this utility model.

[0034] Figure 4 This is a cross-sectional view of a waterproof and breathable layer of a non-shrinkable polyester fabric proposed in this utility model.

[0035] Figure 5 This is a two-part split diagram of the separator layer of a polyester fabric with varying shrinkage, as proposed in this utility model.

[0036] Legend:

[0037] 1. Outer cotton fabric; 2. Insulation structure; 201. Coral fleece; 202. Windproof cotton; 203. Wool; 204. Hollow fiber; 205. Cotton; 3. Different-shrinkage fiber; 4. Different-shaped fiber; 5. Hollow fiber; 6. First separator layer; 7. Skin-friendly cotton layer; 8. Second separator layer; 9. Inner down; 10. Foam; 11. Waterproof and breathable layer; 12. Modal fabric; 13. Decoration; 14. Mesh structure; 15. Label; 16. Antibacterial fiber. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see the appendix Figure 3 Appendix Figure 4 and attached Figure 5 An embodiment of this utility model provides: a differential shrinkage polyester fabric, including an outer cotton layer 1, a differential shrinkage fiber 3 fixedly connected to the top of the inner part of the outer cotton layer 1, a shaped fiber 4 fixedly connected to the bottom of the differential shrinkage fiber 3, a hollow fiber 5 fixedly connected to the bottom of the shaped fiber 4, a first separator layer 6 fixedly connected to the bottom of the inner part of the outer cotton layer 1, a skin-friendly cotton layer 7 fixedly connected to the bottom of the inner part of the first separator layer 6, a second separator layer 8 fixedly connected to the top of the first separator layer 6, an inner down 9 fixedly connected to the middle of the second separator layer 8, a foam 10 fixedly connected to the top of the inner part of the second separator layer 8, and a bottom of the foam 10 fixedly connected to the top of the inner down 9. A warming mechanism 2 is provided inside the outer cotton layer 1 to improve the warmth retention of the fabric.

[0040] Specifically, the outer layer of this fabric consists of an outer cotton layer 1, which is not only comfortable but also breathable. At the top of the inner surface of the outer cotton layer 1, a layer of heterogeneous shrinkage fiber 3 is fixedly connected. This fiber has special shrinkage properties, allowing it to change its length under specific conditions, thus providing the fabric with additional elasticity and fit. Immediately following the bottom of the heterogeneous shrinkage fiber 3, a heteromorphic fiber 4 is fixedly connected, further enhancing the fabric's structural stability and durability. At the bottom of the heteromorphic fiber 4, a hollow fiber 5 is fixedly connected. This fiber is hollow inside, providing additional warmth while maintaining the fabric's lightness. Inside the outer cotton layer 1… On the bottom side, a fabric separator layer 6 is fixedly installed. This separator layer can effectively separate the fiber layers with different functions, ensuring that each layer of material can play its maximum role. The bottom of the inner part of the separator layer 6 is fixedly connected to the skin-friendly cotton layer 7. The material of this layer is particularly soft and can directly contact the skin, providing a comfortable wearing experience. The down material is lightweight and has excellent warmth retention, providing the wearer with extra warmth. The foam 10 has good elasticity and support, which can increase the comfort and durability of the fabric. The bottom of the foam 10 is fixedly connected to the top of the inner down 9, ensuring that the two layers of materials can work together to provide warmth and comfort.

[0041] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 The warming mechanism 2 includes coral fleece 201. The bottom of coral fleece 201 is fixedly connected to the top of the outer cotton layer 1. The front side of the inner top of the outer cotton layer 1 is fixedly connected to windproof cotton 202. The bottom of windproof cotton 202 is fixedly connected to wool 203. The bottom of the inner side of the second partition layer 8 is fixedly connected to hollow cotton 204. The top of the inner side of the first partition layer 6 is fixedly connected to cotton 205.

[0042] Specifically, the windproof cotton 202 effectively blocks the invasion of cold wind, and the bottom of the windproof cotton 202 is fixedly connected to the soft wool 203. The wool 203 not only has good warmth retention performance, but also provides a comfortable touch. The hollow cotton 204 can effectively lock in air, thereby achieving a better heat retention effect. The top of the inner part of the partition layer 6 is fixedly connected to a layer of cotton 205. The cotton 205, with its natural warmth retention properties and breathability, adds extra comfort and warmth to the insulation mechanism 2.

[0043] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 The top left and right sides of the outer cotton layer 1 of the fabric are fixedly connected with decorations 13. Both decorations 13 are symmetrically designed. The bottom of the hollow fiber 5 is fixedly connected with antibacterial fiber 16. The top right side of the outer cotton layer 1 of the fabric is fixedly connected with a label 15.

[0044] Specifically, the symmetrical connection of the decorative elements 13 enhances the overall aesthetics, the antibacterial fibers 16 ensure the hygiene and health of the fabric, and the label 15 contains important information about the fabric composition and washing instructions, making it convenient for consumers to understand and use.

[0045] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 The top of the second separator 8 is fixedly connected to a waterproof and breathable layer 11, the top of the skin-friendly cotton layer 7 is fixedly connected to a modal fabric 12, and the top of the outer cotton layer 1 is provided with multiple mesh structures 14.

[0046] Specifically, the waterproof and breathable layer 11 ensures that while providing protection, it also maintains a certain level of comfort. The modal fabric 12 provides the user with a more close-fitting and comfortable experience. The mesh structure 14 not only increases the overall aesthetics but also effectively promotes air circulation, further enhancing breathability and comfort when wearing the garment.

[0047] Working principle: The outer cotton layer 1 has a relatively soft touch and presents a natural cotton appearance, giving people a comfortable initial feeling. The skin-friendly cotton layer 7 is in direct contact with the skin, and its soft texture can provide good skin-friendliness, making the wearer feel comfortable. Different shrinkage fibers 3 and different shaped fibers 4 can give the fabric a unique texture and elasticity, preventing the fabric from being too stiff and increasing the comfort of wearing it. The presence of hollow fibers 5 does not affect the overall comfort, but rather increases the fluffiness of the fabric to a certain extent. The inner down 9 and foam 10 provide warmth while also giving the garment a certain degree of softness and elasticity, making it more comfortable to wear.

[0048] Coral fleece 201 traps a large amount of air between the fibers on its outer surface, forming an insulating layer that effectively prevents heat loss. Windproof cotton 202 blocks cold air and wind; in cold environments, wind accelerates heat loss from the body, and windproof cotton 202 prevents wind intrusion, greatly improving the overall warmth of the fabric. Wool 203 fibers have natural crimp, which can trap a large amount of air, providing insulation. Wool 203 itself is also a keratin fiber with low thermal conductivity, effectively reducing heat loss and maintaining a certain level of warmth even in humid environments. In terms of warmth, hollow cotton 204 has a hollow structure inside, which can store a large amount of air and effectively prevent heat conduction. Cotton 205 also provides good warmth and gives people a warm and comfortable feeling. The combined effect of these materials improves the warmth of the fabric with shrinkage. At the same time, in humid environments, wool 203 and hollow cotton 204 are better able to maintain their warmth performance. Wool 203 still has a certain degree of warmth after absorbing a certain amount of moisture. Due to its internal air chamber structure, the warmth performance of hollow cotton 204 decreases less after getting damp than that of cotton 205, thus compensating for the insufficient warmth performance of cotton 205 and coral fleece 201 in humid environments.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A type of polyester fabric with varying shrinkage, comprising an outer cotton layer (1), characterized in that: The outer cotton layer (1) of the fabric is fixedly connected to the top of the inner top of the fabric with a different shrinkage fiber (3), the bottom of the different shrinkage fiber (3) is fixedly connected to a different shaped fiber (4), the bottom of the different shaped fiber (4) is fixedly connected to a hollow fiber (5), the inner bottom side of the outer cotton layer (1) of the fabric is fixedly connected to a first separator layer (6), the inner bottom end of the first separator layer (6) is fixedly connected to a skin-friendly cotton layer (7), the top of the first separator layer (6) is fixedly connected to a second separator layer (8), the middle part of the second separator layer (8) is fixedly connected to an inner down (9), the top of the second separator layer (8) is fixedly connected to a foam (10), the bottom of the foam (10) is fixedly connected to the top of the inner down (9), and the outer cotton layer (1) of the fabric is provided with a heat-insulating mechanism (2), which is used to improve the heat-insulating effect of the fabric.

2. The polyester fabric with varying shrinkage according to claim 1, characterized in that: The insulation mechanism (2) includes coral fleece (201), the bottom of which is fixedly connected to the top of the outer cotton fabric (1), the front side of the inner top of the outer cotton fabric (1) is fixedly connected to windproof cotton (202), the bottom of which is fixedly connected to wool (203), the bottom of the second partition layer (8) is fixedly connected to hollow cotton (204), and the top of the first partition layer (6) is fixedly connected to cotton (205).

3. The polyester fabric with varying shrinkage according to claim 1, characterized in that: A waterproof and breathable layer (11) is fixedly connected to the top of the second separator (8).

4. The polyester fabric with varying shrinkage according to claim 1, characterized in that: Modal fabric (12) is fixedly connected to the top of the skin-friendly cotton layer (7).

5. The polyester fabric with varying shrinkage according to claim 1, characterized in that: The top left and right sides of the outer cotton layer (1) of the fabric are fixedly connected with decorations (13), and the two decorations (13) are symmetrically designed.

6. The polyester fabric with varying shrinkage according to claim 1, characterized in that: The top of the outer cotton layer (1) of the fabric has multiple mesh structures (14).

7. The polyester fabric with varying shrinkage according to claim 1, characterized in that: A label (15) is fixedly attached to the top right side of the outer cotton layer (1) of the fabric.

8. The polyester fabric with varying shrinkage according to claim 1, characterized in that: The bottom of the hollow fiber (5) is fixedly connected to an antibacterial fiber (16).

Citation Information

Patent Citations

  • Polyester fabric

    CN220763766U