Heat Testing Data
For the secondary processing of molded foam bra and shoe foam, at high temperature (about 220 degrees) thermoforming, the polyurethane foam prone to cracking or chalking phenomenon on the surface, if more exposure to ultraviolet light, it will accelerated deterioration yellowing.
Description
For the secondary processing of molded foam bra and shoe foam, at high temperature (about 220 degrees) thermoforming, the polyurethane foam prone to cracking or chalking phenomenon on the surface, if more exposure to ultraviolet light, it will accelerated deterioration yellowing.
Heat pressure light experiment
Sample Size: 200mm thick soft PU foam (TDI Base)
Hot temperature: 220 ℃ 3min
Add amount: 3% GGK-690, 3% GGK-690 + 0.5 & 1% GGK-681
Test unit: Heat Index
Test time: 24hrs
The experimental results
Thermoforming foam can improve performance and reduce light foam yellowing.
