1. Appearance: Except for the special large-pore and random-porous sponges, the more delicate the appearance of the general sponge, the smaller the pores, the better.
2. Hand feel: It can rebound quickly, and a fluffy sponge is better.
3. Tensile properties: A good sponge has at least 80% tensile elongation.
4. Temperature: Good quality sponges have a little smell.
5. Tear strength: good sponge is not easy to tear, and it is not good to break with a touch of a finger. High-grade sofa cushions should use high-density sponges with a density of more than 30 kg/m3, and back pads should use high-density sponges with a density of 25 High density sponge above kg/m³.
The sponge process has been improved, and the density is no longer judged by weight. Instead, a better technical standard is used to judge whether the density of the sponge is a high-density sponge. High-density sponge has the characteristics of absorbing external force, delicate, soft and comfortable feel. It can meet the needs of various markets in automobile, furniture, toys and other industries.
Ningbo Zhongyuan Pigment Co., Ltd. specializes in the production of various sponge colorants. Welcome new and old customers to inquire.
