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What does 7d fabric mean?
7d fabric is 7-hole cotton, that is, hollow fiber cotton, commonly known as PP cotton, doll cotton and padded cotton.

Seven-hole cotton belongs to a special superfine polyester chemical fiber material, and its fiber section has seven cavities, so it is called seven-hole cotton. Although seven-hole cotton is not cotton in the traditional sense, it just looks like cotton in appearance. The more fiber cavities there are, the better its breathability, warmth retention and bulkiness will be. Because it is stored in the cavities, it looks softer.

product application

1, PP cotton filter element

Usage: used in water purifier equipment, mainly for pre-purification.

Material: polyester fiber (PP material).

Replacement time: 6 to 10 months, depending on the local water quality and water consumption.

Function: Filter colloid impurities, micro-mud, rust, eggs, organic pollution minerals and other impurities with a diameter greater than 5 microns in tap water.

Adaptable model: it can be installed in front of the water purifier and on the 1, 3-level water purifier respectively. It needs to be replaced regularly, and the cycle is basically 6 to 10 months.

2, PP cotton pillow core

Use: Pillow filler.

Material: pp cotton.

Benefits: Compared with other pillow core fillers, pp cotton is the most suitable pillow core. Soft and comfortable, the price has been relatively cheap, easy to clean and dry, fluffy and soft feel is the most important filler as a pillow core in the market now.