What is weight gain technology?
Repeated handling, by weight up to 100%. But after weight gain finishing silk fabric strength, elongation and wear fastness have declined, and unfavorable storage, more vulnerable to sun exposure after fragile
Heavyweight finishing mainly tin plus heavy method and tannin heavier method. The proportion of silk fabric finishing by tin increase, feel thick, smooth, luster and rich, drape increase, shrinkage after moisture reduction B treatment can increase weight 20%
In the 18th century in Europe, in order to make up for the loss of true silk after refining, the use of aggravating methods to maintain business profits and the use of value.
The weight gain is a process that uses chemical methods to increase the weight of the silk fabric
Such as finishing by soap or synthetic detergent treatment to remove the surface of the tin salt, can reduce the embrittlement. Tannin aggravated method due to tannin iron salt into black and not suitable for white and light silk fabric finishing
