Soft Polyurethane Foam
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Description
Different of polyalter thread and the polyester thread.
| Polyalther thread urethane foam | Polyester thread urethane foam | ||
| Physics type features / specific characteristic | Strength | Strength is 1 kg per unit square centimetre and keep pulling 2 times above. | 30% ~ 100% than polyalther, also can pull 2 times and above |
| Softness | Except special types, generally, from the different way of power, the softness and coverness is good. | Softness is not as good as polyalther, have hard touching feel. | |
| Chemical type features / specific characteristic | Water check / test | No reaction with water power test and not absorb water. No chemical problem in water test. | Reaction same as polyalther, add on non neutrality PH liquid will make embrittle. |
| Oil check / test | Content solvent, easywet, when wet, strength will reduce, but chemical function no change, when dry will cover back. | Compare with the polyalther, hard to get wet or not wet at all. When wet, strength not change too much and chemical function is ok. | |
| Others | Heat check / test | Same as hot plasticity resin foam, which has no soften point, when heated, will melt to gas directly. | Same as polyalther, melting is much than polyalther, so, polyester totally can be melted. |
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Soft Polyurethane Foam
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