How to distinguish between seven and four hole fiber fiber
The difference between seven and four holes in the fiber section: the section seven is the 7 hole, four hole section has 4 holes in the fiber mirror can clearly see the difference between the two kinds of fibers, so in the test in the current detection mechanism can produce xiaoqikong, four hole fiber proportion (according to the root number to distinguish).
The four hole and seven hole respectively. The full name of the four hole three-dimensional crimp polyester fiber, three-dimensional crimp polyester fiber seven.
Chemical fiber after drilling is very soft, easy recovery, built for a long time, will not be like the cotton is pressed compacted harden, as long as the regular beat, you can restore the original shape, the quilt can keep fluffy.
