Precautions and related physical indicators during printing and dyeing processing
1. Color light source
①Natural light ②D65 ③TL84 ④U30 ⑤Fluorescent lamp ⑥CWF
2. Environmental protection requirements
①Azo does not exceed 10mg/kg;
② Formaldehyde, skin contact is less than 20mg/kg;
③Aromatic amine 0.2mg/kg for outerwear is less than 75mg/kg, and for decorative materials is less than 300mg/kg;
④Heavy metals shall not exceed 0.02mg/kg.
3. Door width classification
①General fabrics;
②Thin fabric;
③Elastic fabric.
4. Gram weight ±3%
① Cotton fabric;
②Polyester and cotton fabric;
③Elastic fabric.
5. Shrinkage, latitude and skew
Elastic warp 3%, weft 5%, non-elastic warp no more than 3%, twist 1CM, special varieties must be made according to customer requirements.
①General cotton, polyester cotton ②Elastic fabric
6. Color fastness
①Soaping fastness level 3-4;
②Wet rubbing fastness is level 2-3, dry rubbing fastness is level 3-4;
③Perspiration fastness level 3-4;
④Chlorine resistance fastness level 4-5;
⑤Light fastness level 4;
⑥Sublimation fastness level 4.
7. Classification of hand quality
①Sanding;
②Soften;
③Imitation Tencel craftsmanship;
④Coating;
⑤ Stiff finishing.
8. Color difference above level 4
① Left and right color difference;
② Head and tail color difference;
③Cylinder difference.
9. PH value 4-7.5
① pH requirement: 4.5–7.5
10. Loss
①Long car production ②Cylinder production
22. Special finishing
①Three-proof (Teflon) waterproof over 90 points,
② Oil and waterproof level 5 or above,
③No ironing level 3.5
④ Anti-UV finishing = 50+,
⑤Antistatic: charge area density﹤5, friction charge density﹤7,
⑥Acid and alkali protection,
⑦ Stiff finishing,
⑧ Easy decontamination and finishing level 4,
⑨ Anti-pilling level 4,
⑩Flame retardant: burning time ≦2 seconds, flame retardant time ≦3 seconds, damage length ≦100.
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