01 anti-wrinkle finishing
Anti-wrinkle finishing is sometimes called anti-wrinkle finishing. Since most polymer materials, especially synthetic resins, are used as anti-wrinkle finishing agents, it is also called resin finishing.
Resin finishing is to use polymer materials for finishing. By adding other components, its purpose In addition to anti-wrinkle, it can also be anti-shrink, waterproof, water-repellent, water-absorbent, soft, antibacterial, antistatic, flame retardant, warm, reinforced, easy to wash, and change the feel.
Strictly speaking, the purpose and function of anti-wrinkle finishing is to make textiles less likely to wrinkle or The wrinkles produced are easy to return to their original shape and can maintain a flat appearance during use. In addition to resin finishing, other chemicals can also be used for cross-linking.
It is not difficult to understand that the essence of anti-wrinkle finishing is to improve the stability of textile form, so in While improving wrinkle resistance, it often also produces anti-shrinkage and non-iron effects.
In some materials, anti-shrinkage and anti-wrinkle (property) and durable pressing (property) are often used Or mix it with non-iron (sexual) finishing. In fact, anti-wrinkle finishing is different from shrink-proof, no-iron and durable press finishing in terms of purpose, method and measurement index.
02 non-iron textiles
Non-iron textiles refer to textiles that must meet four requirements: dimensional stability, appearance smoothness, pleat retention and seam appearance after washing and drying.
In order to unify the meaning of terms, my country’s textile standards stipulate that no-iron textiles (No Iron textiles) include two types of products: shrinkresistant and wrinkle free and durable press textiles.
Since people’s requirements for the morphological stability of textiles generally include anti-shrinkage and anti-wrinkle properties, Anti-shrinkage and wrinkle resistance are used as a term in my country’s textile standards.
For products that require pleating to be maintained after washing and drying (such as skirts, trousers, etc.), The meaning of non-iron is durable pressing;
And for those without pleats, creases or For products that are not required to maintain pleats after washing and drying, such as shirts and casual wear, non-iron only means shrinkage and wrinkle resistance, and only includes three requirements: dimensional stability, appearance smoothness and seam appearance after washing and drying.
Therefore, fabrics only have anti-shrink and anti-wrinkle products, but no durable pressing products; styles and products There are both anti-shrink and anti-wrinkle products as well as durable press products.
Anti-shrinkage and anti-wrinkle properties mean that textiles can still be washed many times during use. Maintain satisfactory dimensional stability, flatness and seam appearance. Anti-shrink and anti-wrinkle textiles refer to textiles that still have anti-shrink and anti-wrinkle properties after five cycles of washing and drying.
03 Durable Pressing Properties
Durable pressability refers to the performance of garments and textile products that can be restored to a state suitable for wearing or use after repeated washing without ironing or only light ironing during use. In addition to the requirements for dimensional stability, flatness and seam appearance, durable press properties also require the retention of pleat appearance.
Durable press textiles are those that remain shrink-proof after 5 cycles of washing and drying. Textiles that resist wrinkles and maintain a pleated appearance.
The wrinkle resistance of the fabric can be characterized by the wrinkle recovery angle (WRA) of the fabric.
The international market for washable and wearable cotton fabrics generally requires a wrinkle recovery angle (WRA) ≥ 250 °, DP grade 3~4, tensile strength loss ≤40%. The wrinkle recovery angle (WRA) of durable pressed textiles is generally 250°~300°, the DP grade is ≥3.5, and the tensile strength loss is ≤40%.
In 2002, my country formulated the national standard GB/ for non-iron textiles with reference to international standards. T18863-2002. In addition to the requirements for physical properties, color difference, yellowing and hygienic performance, this standard also requires anti-shrinkage and anti-wrinkle properties:
After 5 cycles of washing and drying, the appearance smoothness is ≥3.5 (GB/T 13769292, equivalent to ISO 7768-1985);
Seam appearance ≥ Level 3 (GB/T 13771);
Dimensional change rate -3% ~ 3% (GB/T 8628, GB/T 8629, GB/T 8630, if there are other standards for clothing, please follow the clothing standard. standard). However, mulberry silk and its blended interwoven anti-shrinkage, anti-wrinkle and easy-iron textiles have no requirements on the appearance of seams (see GB/T 15551).
For durable pressed textiles, it is also required to pleat after 5 cycles of washing and drying. Appearance standard >Level 3.
It should be stated that after 5 cycles of washingAfter drying, the methods for measuring shrinkage resistance, wrinkle resistance and durable press properties are consistent with international requirements.
