Method of shaping a tampon for feminine hygiene
View Patent ↗A process of forming a shaped, dimensionally stable tampon includes the steps of: radially compressing a tampon blank to form a dimensionally stable intermediate pledget having an intermediate pledget diameter and a longitudinal axis; placing the intermediate pledget into a hollow carrier and inserting the intermediate pledget and hollow carrier into a mold; urging the intermediate pledget into the mold via a ram bearing on an end of the intermediate pledget contained within the hollow carrier and withdrawing the hollow carrier from the mold to permit the exposed end of the intermediate pledget to substantially fill the mold and to form the shaped, dimensionally stable tampon; removing the shaped, dimensionally stable tampon from the mold; and enclosing the shaped, dimensionally stable tampon in a primary package that conforms to the shape thereof. The mold has an access opening through which the hollow carrier can be withdrawn.
1. A process of forming a shaped, dimensionally stable tampon comprising the steps of:
a. radially compressing a tampon blank to form a substantially cylindrical, dimensionally stable, intermediate pledget having an intermediate pledget diameter;
b. forming a shaped primary tampon package having a length, a first, closed end and a second, open end, the shaped primary tampon package having:
i. a first enlarged portion, extending from the first, closed end;
ii. a second portion, extending from the second, open end;
wherein the second portion is substantially cylindrical and has a substantially uniform diameter that is greater than the intermediate pledget diameter and the first enlarged portion has a maximum diameter that is greater than the substantially uniform diameter of the first portion;
c. inserting the intermediate pledget into the shaped primary tampon package, a first portion of the intermediate pledget adjacent the first enlarged portion of the shaped primary tampon package and a second portion of the intermediate pledget adjacent the second portion of the shaped primary tampon package;
d. expanding the first portion of the intermediate pledget to substantially fill the first enlarged portion of the shaped primary tampon package to form the dimensionally stable tampon; and
e. closing the second, open end of the shaped primary tampon package.
2. The process of claim 1 wherein the shaped primary tampon package comprises a thermoformed polymeric film.
3. The process of claim 1 wherein the step of expanding the first portion of the intermediate pledget comprises:
a. supporting outer surfaces of the first enlarged portion of the shaped primary tampon package with a substantially rigid mold;
b. supporting outer surfaces of the second portion of the intermediate pledget; and
c. applying an axial force to the intermediate pledget to force the first portion against first enlarged portion of the shaped primary tampon package and the substantially rigid mold to radially expand the first portion of intermediate pledget.