Title: String up and shutdown process for a yarn texturizing apparatus

Abstract: A method for texturizing synthetic thermoplastic yarn in a bulking apparatus wherein a heated, dry gas is employed to convey a yarn into a bulking chamber to form a compact mass of yarn. The process is characterized in that an auxiliary gas is introduced into the bulking apparatus at a lower temperature than that of the heating gas to convey the yarn during start-up and/or shutdown of the apparatus to avoid over-heating and fusion of the yarn, and to thereby prevent plugging of the apparatus.

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Inventors: Fink, Roger H. (Asheville, NC, US)
Porter, William D. (Asheville, NC, US)

Application Number: 517787
Filing Date: 1974-10-24
Publication_date: 1977-03-29
Assignee: Akzona Incorporated (Asheville, NC)
Primary Class(es): 28/248 28/255
Other Classes:
US Patent Ref:

3778872	Dec, 1973	Newton	28/72.
3842468	Oct, 1974	Harrison	28/72.
3895420	Jul, 1975	Sturtz et al.	28/72.

Other Refs:
Primary Examiner: Mackey, Robert R.
Assistant Examiner:
Attorney: Craig & Antonelli