Method of winding up tampon material
An improved apparatus for forming tampon blanks for further processing into compressed, self-sustaining tampons, permits increased speed and accuracy of the process step. The apparatus includes a sliver guide; a gripper capable of reciprocating motion and arranged and configured to cooperate with the sliver 5 guide to grasp an end of a sliver maintained therein; a winding mandrel; a plurality of winding cups; and e) a string application and knotter apparatus comprising a circular ring bearing having a string conveyor mounted thereon. The circular ring bearing of the string application and knotter apparatus defines a plane perpendicular to the sliver guide and motion of the gripper and parallel to the 10 winding axis of the winding mandrel.
1. Apparatus for forming tampon blanks for further processing into compressed, self-sustaining tampons, the apparatus comprising:
a) a sliver guide;
b) a gripper capable of reciprocating motion and arranged and configured to cooperate with the sliver guide to grasp an end of a sliver maintained therein;
c) a winding mandrel;
d) a plurality of carriers; and
e) a string application and knotter apparatus comprising a substantially rigid circular ring bearing having a string conveyor mounted thereon arranged and configured to rotate about the sliver;
wherein the circular ring bearing of the string application and knotter apparatus defines a plane perpendicular to the sliver guide and motion of the gripper and parallel to the winding axis of the winding mandrel.
2. A process for manufacturing tampon blanks for further processing into compressed, self-sustaining tampons, the process comprising the steps of:
a) drawing a fibrous web from a fibrous web supply, through a sliver guide and across a carrier disposed on a turntable by grabbing a free end of the fibrous web supply with a gripper and drawing the gripper away from the fibrous web supply;
b) severing the fibrous web from the fibrous web supply to form an elongate fibrous web having a first end held by the gripper and a second end, distal the first;
c) elevating the carrier while the first end remains held by the gripper and the second end is restrained by the sliver guide wherein the carrier is disposed perpendicular to a central portion of the elongate fibrous web;
d) advancing a winding mandrel across the central portion of the elongate fibrous web, wherein the winding mandrel has a slot arranged and configured to accept the elongate fibrous web therein;
e) rotating the winding mandrel as the gripper releases the first end of the elongate fibrous web to form a tampon blank; and
f) transferring the tampon blank to the carrier.