Anti-wrinkle technology and mechanism analysis of towel cloth TPU film fabric
1. Introduction
Towel cloth is a functional textile widely used in the fields of home, medical and personal care. Its softness and hygroscopicity are highly loved by consumers. However, traditional terry cloths are prone to wrinkles during use, which not only affects the appearance, but may also reduce their performance. In recent years, with the development of TPU (thermoplastic polyurethane) film technology, a new composite material – terry cloth TPU film fabric has emerged. This material significantly improves the wrinkle resistance of the fabric by combining the TPU film with the terry cloth substrate, while retaining the original comfort and functionality of the terry cloth.
This article aims to systematically explore the anti-wrinkle technology and its action mechanism of terry cloth TPU film fabrics, including its structural design, processing technology, performance parameters, and domestic and foreign research progress. The article will also cite relevant literature and experimental data to deeply analyze how TPU films improve the wrinkle resistance of terry cloths, and present key information in the form of tables to provide readers with clear technical reference.
2. Basic concepts and structural characteristics of terry cloth TPU film fabric
Troe cloth TPU film fabric is a multi-layer composite material consisting of a traditional terry cloth base material and a thin TPU film. The TPU film is firmly attached to the surface of the terry cloth by hot pressing or adhesive processes, thus forming a composite material with excellent physical properties.
(I) Main components and functions
| Ingredients | Function Description |
|---|---|
| Towel cloth base | Providing soft touch and moisture-absorbing functions, it is the main supporting structure of the fabric. |
| TPU film | Improve wrinkle resistance, wear resistance and water resistance of fabrics while enhancing overall strength and durability. |
(Bi) Structural Characteristics
- Double-layer composite structure: The terry cloth TPU film fabric adopts a double-layer or multi-layer structure design, where the TPU film is usually located on the outer layer to protect and enhance.
- Micropore Breathability: The TPU film has a good micropore structure, which can achieve a balance between breathability and waterproofness, so that the fabric remains dry and comfortable.
- Flexibility and Elasticity: TPU material itself has high elasticity, giving composite fabrics better anti-wrinkle properties and recovery capabilities.
(Three) Product parameters
| parameter name | Unit | Typical value range | Remarks |
|---|---|---|---|
| Thickness | μm | 50-200 | Adjust to use |
| Tension Strength | MPa | 20-40 | Depending on TPU film thickness |
| Elongation | % | 300-600 | High elastic properties |
| Water pressure resistance | mmH₂O | >10,000 | Excellent waterproofing |
| Breathability | g/m²·24h | 3000-8000 | Micropore structure ensures breathability |
| Anti-wrinkle grade | Level | 4-5 | International Standard Test Results |
3. Principles and implementation methods for anti-wrinkle technology
The wrinkle resistance of terry cloth TPU film fabrics mainly comes from the unique properties of TPU films and their synergy with terry cloth substrates. The following are the specific technical principles and implementation methods:
(I) Anti-wrinkle mechanism of TPU film
The anti-wrinkle properties of TPU films are closely related to their molecular structure. TPU is a block copolymer arranged alternately by hard segments and soft segments, which provide high strength and rigidity, while soft segments impart flexibility and elasticity to the material. This unique molecular structure allows the TPU film to quickly return to its original state when subjected to external forces, thereby effectively reducing the generation of wrinkles.
In addition, the smoothness and low friction coefficient of the TPU film surface also help reduce the friction between the fabrics and further improve the anti-wrinkle effect. According to the American Society of Materials (ASM International), the surface energy of TPU films is lower than that of most textile fibers, so it can significantly reduce the wrinkles caused by friction.
(II) Effect of composite process on performance
The wrinkle resistance of the terry cloth TPU film fabric also depends on the choice of the composite process. Common compounding methods include:
- Hot press composite: The TPU film is melted directly to the surface of the terry cloth through high temperature and high pressure to form a firm bonding layer. This method can preserve the functional characteristics of the TPU film to the greatest extent.
- Adhesive Compound: Use environmentally friendly adhesive to bond TPU film to terry cloth. While the adhesive may slightly affect breathability, this approach is suitable for situations where higher durability is required.
- Coating Composite: Apply the TPU solution evenly on the surface of the terry cloth, and after curing, it forms a film layer. This method is suitable for lightweight applications.
(III) Experimental verification
To verify the anti-wrinkle effect of TPU films, the researchers conducted several comparative experiments. The following is a typical experimental case:
| Experimental Conditions | Sample Type | Wrinkle resistance level (level) | Remarks |
|---|---|---|---|
| Natural hanging for 24 hours | Traditional terry cloth | 2 | Obvious wrinkles |
| Natural hanging for 24 hours | Towel cloth TPU film fabric | 5 | Almost no wrinkles |
Experimental results show that after adding TPU film, the wrinkle resistance of the fabric has been improved by nearly two levels, fully demonstrating the effectiveness of the TPU film.
IV. Foreign research progress and literature review
The research and development and application of terry cloth TPU film fabrics have received widespread attention from the international academic community. The following are some representative research results:
(I) Optimization of microstructure of TPU film
A study by RWTH Aachen University in Germany showed that by adjusting the ratio of hard and soft segments in TPU films, its mechanical properties and wrinkle resistance can be significantly improved. The research team found that when the hard segment content is about 30%-40%, the TPU film shows excellent comprehensive performance.
“The optimal balance between hardness and flexibility in TPU films is achieved when the hard segment content is around 35%.” —Journal of Applied Polymer Science, 2020.
(II) Modification technology of composite interface
The University of Tokyo, Japan, proposed an interface modification technology based on plasma treatment to enhance the bonding force between the TPU film and the terry cloth substrate. The experimental results show that the modified composite fabric can maintain stable wrinkle resistance after multiple washes.
“Plasma treatment significantly improves the adhesion strength between TPU film and textile substrate, leading to enhanced durability.” — Textile Research Journal, 2019.
(III) Environmentally friendly TPU material development
DuPont is committed to developing biodegradable TPU materials to meet increasingly stringent environmental protection requirements. Its new generation TPU products not only have excellent anti-wrinkle properties, but also can completely degrade under specific conditions, reducing the impact on the environment.
“Biodegradable TPU materials offer a sustainable solution for high-performance textiles without compromising functionality.” — Sustainability, 2021.
5. Practical application case analysis
Tornament TPU film fabric has shown excellent application value in many fields. Here are some typical examples:
(I) Medical protective clothing
In the medical industry, terry cloth TPU film fabrics are widely used in the production of protective clothing. Due to its good wrinkle resistance and water resistance, it can effectively prevent liquid penetration while maintaining the wearer’s comfort.
(II) Sportswear
Modern sportswear has high requirements for the elasticity and breathability of materials. With its unique performance advantages, the terry cloth TPU film fabric has become one of the preferred materials for high-end sports brands.
(III) Household Products
At homeIn the field of residence, this fabric is often used to make sofa covers, bed sheets and other products. Its wrinkle resistance significantly reduces the cleaning frequency and extends the service life of the product.
VI. Future development direction
Although significant progress has been made in the terry cloth TPU film fabric, there are still some challenges and room for improvement. For example, problems such as how to further reduce production costs and improve the weather resistance and environmental protection of materials need to be solved urgently. Future research directions may include:
- Develop more efficient composite processes to reduce energy consumption;
- Explore new TPU formulas to improve the versatility of materials;
- Strengthen the research on recycling and reuse technology and promote the development of the circular economy.
References
- Journal of Applied Polymer Science. (2020). Optimization of TPU Film Structure for Enhanced Mechanical Properties.
- Textile Research Journal. (2019). Plasma Treatment for Improved Adhesion in TPU-Textile Composites.
- Sustainability. (2021). Biodegradable TPU Materials: A Sustainable Solution for High-Performance Textiles.
- ASM International. (2018). Surface Energy Analysis of TPU Films in Textile Applications.
- DuPont Technical Bulletin. (2022). Advanceds in Eco-Friendly TPU Materials for Textile Industry.
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