TPU yarn is a fiber material made of thermoplastic polyurethane elastomer by spinning process. It has excellent wear-resisting, torturing resistance, tearing resistance, high strength, hot melting, easy shaping (durable), antibacterial and deodorant, anti-water, environmental protection and recyclable characteristics, which are widely used in shoe materials, packaging, clothing, automobile, medical, consumer electronics, home and other fields.
TPU yarn
Types of TPU yarn
According to different processing technology and application requirements, a variety of different types of TPU yarn can be produced. From the point of view of fiber structure, the common types are monofilament, compound filament, leather-core monofilament and so on:
1.TPU monofilament:
TPU monofilament is a single piece of TPU fiber composed of yarn. The diameter of the monofilament is generally between 0.08mm and 0.30mm and can be adjusted as needed. TPU monofilament has the characteristics of high strength, high toughness and good softness, and is widely used in the production of sports shoes, textiles, packaging materials and other fields.
2.TPU compound filament:
TPU compound filament is a yarn composed of multiple TPU fibers. The diameter of the compound filament is generally between 0.2mm and 0.8mm, with higher strength and softness. TPU filament can be used to make various industrial supplies, sports equipment, automotive interior, etc.
3.TPU compound filament:
TPU compound filament is a yarn composed of multiple TPU fibers. The diameter of the compound filament is generally between 0.2mm and 0.8mm, with higher strength and softness. TPU filament can be used to make various industrial supplies, sports equipment, automotive interior, etc.
TPU yarn fabric sample, Shenzhen Jet Jia
Subdivided into applications, TPU yarns can be developed such as high elasticity, antibacterial, flame retardant, sweat absorption and other functional types.
I. TPU spinning process
TPU spinning process mainly includes ordinary spinning, electrostatic spinning, air spinning, wet spinning, etc. The general process is to modified TPU, fused and extruded by screw, and then through drafting, shaping and other processes to finally make yarn.
In addition to ordinary spinning, TPU electrostatic spinning has attracted much attention in the industry. TPU electrostatic spinning is a new type of spinning technology, using the electrostatic spinning machine TPU particles through the action of high voltage electric field, forming fibers and collected into yarn process. The specific steps are as follows:
1. Preparation of TPU particles: Add TPU particles into the feed mouth of the electrostatic spinning machine, and turn TPU into melt through melting and heating.
2. Electrostatic spinning: the melt is ejected through the nozzle, and under the action of high voltage electric field, the fiber is formed, and the yarn is collected and integrated on the electrostatic plate.
3. Fiber stretching: stretch the yarn collected by the stretching machine to make it thinner and more uniform.
4, fiber cooling: the stretched fiber through the cooling device to cool, so that it becomes more tough.
5. Fiber winding: The cooled fiber is wound by the winding machine to make TPU electrostatic spinning.
6, yarn treatment: made of yarn post-treatment, such as strengthening, dyeing, printing, etc., in order to obtain the required performance and appearance effect.
7. Inspection: Strictly inspect the quality of the yarn to ensure that there are no defects or defects.
8, packaging: yarn packaging, ready to send to the next production link or sales.
Ⅱ.TPU yarn vamp application
Compared with traditional uppers, TPU yarn uppers are lighter, softer, wear-resistant, recyclable and breathable, so they are widely used in the field of athletic shoes.
The Nike Flyknit series
Adidas Primeknit Series
Puma evoKNIT series
New Balance FantomFit series
Under Armour Speedform series
Anta Splash 3 generation Snowflake
Pick State pole yarn: Composite yarn of TPEE+ adaptive material
In addition to the vamp, TPU yarn can also be made into shoelace, and the application market share of the TPU mid-sole, the emerging TPU outsole, TPU insole, endothelial, a 100% single material TPU whole shoe was born. From the perspective of industry layout trend, 100% single material TPU whole shoes are catering to the strategy of environmental protection and sustainable development, and are becoming the future application trend.
Post time: May-05-2023