Lenzing regenerated sand and air layer: full analysis of performance, process and application

Lenzing recycled polyester sand-washed air-layer fabric is a new knitted fabric that combines the environmental properties of Lenzing fiber and recycled polyester, and combines air-layer structure and sand-washing technology. It has the advantages of soft touch, crisp shape and green environmental protection. It has outstanding application value in the fields of clothing and home textiles.

1. Principles: Fiber synergy and structural advantages

1. Fiber proportioning principle: Lenzing fiber is derived from natural wood pulp, which is hygroscopic, breathable, skin-friendly and smooth; recycled polyester is made from waste polyester products through recycling, reducing resource consumption and carbon emissions; the two are blended in a scientific proportion, which not only retains the comfort of natural fibers, but also enhances the strength and durability of the fabric.

2. Principle of air layer structure: Double-sided weaving process is used to form a hollow sandwich structure in the middle of the fabric. Air can be retained in the sandwich to improve the warmth and fluffiness of the fabric. At the same time, the hollow structure reduces the contact area between the fabric and the skin, enhances breathability and perspiration performance, and achieves a "warmth but not stuffy" wearing experience.

2. Technology: core processes of weaving and finishing

1. Air layer weaving process: Double-sided circular loom weaving is used. The dial and needle cylinder weave the front and back of the fabric respectively, and the middle is fixed by connecting yarns to form a three-layer structure. The yarn tension is precisely controlled during the weaving process to ensure uniform thickness of the interlayer and avoid defects such as uneven thickness and jumpers.

2. Finishing process after sand washing: After the gray fabric is weaved, it is pre-shrunk and shaped to stabilize the size, and then put into sand washing equipment. Through the combined action of mechanical friction and chemical additives, the hairiness on the surface of the fabric is removed, making the fabric feel softer and smoother; after sand washing, soft and antistatic finishing is performed to further improve the wearing performance of the fabric.

3. Key points of the environmentally friendly process: low-alkali and low-foaming environmentally friendly additives are used in the sand washing process, and reactive dyes are used for dyeing. The entire process follows green production standards and meets the OEKO-TEX® Standard 100 ecological textile certification requirements.

3. Application Category: Multi-scenario adaptation fields

1. Clothing field: suitable for making autumn and winter sweaters, jackets, casual pants, dresses, etc. The stiffness of the air layer structure can support the clothing pattern, and the soft touch after sand washing improves wearing comfort; it can also be used for children's clothing and clothing for the elderly. It is skin-friendly and non-irritating and suitable for sensitive people.

2. Home textile field: It can be used to make pillowcases, sofa covers, thin blankets and other products. The warm and breathable performance enhances the home experience. The soft touch and delicate texture meet the needs of high-quality home life.

3. Functional clothing: By adding antibacterial, windproof and other functional finishing, it can be expanded to outdoor lightweight thermal clothing, commuter jackets and other scenarios to meet consumer demand for multifunctional fabrics.

4. Maintenance: washing and maintenance skills

1. Washing method: It is recommended to hand wash in cold water or machine wash on a gentle cycle. Avoid using high-temperature hot water and strong alkaline detergents to prevent the fabric from shrinking and hardening. When machine washing, turn the fabric inside out and put it in a laundry bag to reduce friction damage.

2. Drying and storage: After washing, lay them flat to dry in the shade to avoid exposure to the sun to prevent fading of the fabric and deformation of the sandwich structure; fold flat when storing, do not stack them under heavy pressure, and put in desiccant to prevent moisture and mildew.

3. Ironing precautions: If ironing is required, set the medium-low temperature mode (the temperature does not exceed 130°C), and place a layer of damp cloth on the surface of the fabric to avoid direct contact with the iron, which may cause wrinkles or damage to the fabric.

5. Technology: core performance indicators and innovation directions

1. Core performance indicators

• Warmth insulation index: The thickness of the air layer interlayer is 0.3-0.8mm, and the warmth retention is better than plain fabrics of the same weight;

• Environmental protection indicators: recycled polyester accounts for ≥30%, in line with GRS global recycling standards;

• Durability index: It can be washed ≥50 times. It still maintains a crisp shape after washing, without obvious pilling or deformation.

2. Technological innovation direction: develop a high-proportion recycled polyester blend formula to improve the strength and wrinkle resistance of the fabric; explore intelligent temperature-controlled air layer fabrics to achieve temperature regulation function by adding phase change materials; optimize the sand washing process to shorten the production cycle and reduce energy consumption.

6. Trend Category: Market Development and Industry Direction

1. Environmental protection trend: Driven by the "double carbon" goal, the combination of recycled fiber and environmentally friendly technology has become the mainstream direction of the fabric industry. Lenzing's recycled sand-washed air-layer fabrics are in line with the concept of green consumption, and market demand continues to grow.

2. Functionalization trend: Consumer demand for multi-functional clothing has increased. Air-layer fabrics with composite functions such as warmth, breathability, antibacterial, and windproof will become the core choice for brand product upgrades.

3. Differentiation trend: Customized interlayer thickness, sand-washed effect and color fabrics can meet the personalized design needs of different brands. Small batch and quick-turn production models will gradually become popular.