The pillow core needs filling materials to keep the pillow at a certain height when it is used. The filling materials are various, including cassia seed, wild chrysanthemum, silkworm excrement, buckwheat hull, chaff, cotton, rush, cattail and waste tea.
In addition, the materials processed by modern technology, such as porous vacuum sponge and slow rebound sponge, are all well-known filling materials in the market.
Identify high-end pillow materials
1, density: density is the basic index of high-grade slow-rebound materials, generally at least above 80 density, but it is also the easiest index to achieve. Even products with the same density will vary greatly, mainly due to the differences in formula, technology and raw materials, which means that high-grade slow-rebound materials must be high-density, but only high-density materials are not necessarily high-grade materials.
2. Rebound time: The better rebound time is about 3-5 seconds. Too short, no slow rebound effect; Too long will make your body stiff (think about turning over and not rebounding for a long time).
3. Manufacturing process: There are two manufacturing processes of slow rebound: cutting and forming. Cutting is to buy a finished slow-rebound sponge and cut it into the shape of a pillow; Molding is a series of processes, such as foaming with mold and vacuumizing, which is much more complicated. Density, feel and service life are all related to this.
4. Service life: high-grade and slow-rebound, which will not deform after being used for more than 5 years, but those made by cutting technology or with poor quality can only be used for 1-2 years.