Spin finish

nounStandard termNonwovens

Thin coating applied to fibers during manufacture to control friction, static and wettability in processing.

Fiber producers apply a lubricant and antistatic blend, typically well under 1 percent of fiber weight, so fibers can be opened and carded without static, wraps or fly. For hygiene fabrics the finish also decides whether a fiber is hydrophilic or hydrophobic, and some finishes are built to survive repeated wetting. Wrong or uneven finish shows up as card loading, static, weak bonds or a topsheet that will not wet out.

Heard on the job

Card is wrapping like crazy this shift, check the spin finish level on the new lot before we blame humidity.

Insider tip

A new fiber lot that suddenly cards badly is a finish problem until proven otherwise.

Also heard as

  • finish
  • fiber finish
  • lube