IP Library Granted Patent US 7,678,095
Granted Patent B2
US 7,678,095 · App. 10/975,615 · Granted Mar 16, 2010

Pre-expanded tampon pledget

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 7,678,095
App. No.
10/975,615
Filed
Oct 28, 2004
Granted
Mar 16, 2010
Kind
B2
Art Unit
3781
USPC
604/385.18
Abstract

The present invention provides a pre-expanded tampon pledget formed from cellulosic absorbent fibers. The fibers are not tightly compressed, thus, the pledget has a reduced fiber density. As a result, a softer, more pliable pledget is formed that not only increases user comfort during use, but also affords a user with comparable and/or increased leakage protection over conventional tampons or tampon pledgets.

Claims (15)

1. A pre-expanded tampon pledget comprising:

a cellulosic fiber, said cellulosic fiber essentially amounting to the total weight of the pre-expanded tampon pledget, said cellulosic fiber is such that the pre-expanded tampon pledget has a larger diameter and volume and a reduced fiber density prior to use than after use, wherein said reduced fiber density is from 0.01 grams per cubic centimeter (g/cc) to 0.39 g/cc with an absorbency capability from 6 grams to 18 grams, and wherein the pre-expanded tampon pledget has a length of 1.75 inches.

2. The pre-expanded pledget of claim 1 , wherein said cellulosic fiber is selected from the group consisting of rayon, cotton, pulp, and any combinations thereof.

3. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has a volume about 8 cc to about 52 cc.

4. The pre-expanded tampon pledget of claim 1 , wherein said cellulosic fiber is present in the pre-expanded tampon pledget in an amount from 1.3 grams to 4.5 grams.

5. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has a diameter in an initial condition about 0.5 inches to about 1.75 inches.

6. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has a cross-pad construction.

7. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has a radial construction.

8. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has a flat pad construction.

9. The pre-expanded tampon pledget of claim 1 , further comprising a coverstock about at least a portion of the pre-expanded tampon pledget.

10. The pre-expanded tampon pledget of claim 1 , wherein said absorbency is achieved by said cellulosic fiber without the use of a transfer layer.

11. The pre-expanded tampon pledget of claim 1 , wherein the pre-expanded tampon pledget has about 1.1 grams to about 4.5 grams of cellulosic fiber.

12. A pre-expanded tampon pledget comprising:

a cellulosic fiber, said cellulosic fiber essentially amounting to the total weight of the pre-expanded tampon pledget, said cellulosic fiber is such that the pre-expanded tampon pledget has a larger diameter and volume and a reduced fiber density just prior to use than after use, wherein said reduced fiber density is from 0.01 g/cc to 0.39 g/cc with an absorbency capability from 6 grams to 18 grams, and wherein the pre-expanded tampon pledget has a diameter in an initial condition selected from the group consisting of from 0.5 inches to 0.8 inches for an absorbency capability from 6 grams to 9 grams and from 0.65 inches to 0.8 inches for an absorbency capability from 9 grams to 18 grams, and wherein the pre-expanded tampon pledget has a length of 1.75 inches.

13. The pre-expanded tampon pledget of claim 12 , wherein the pre-expanded tampon pledget has enlarged pores for fluid to enter and move through the pre-expanded tampon pledget.