IP Library › Granted Patent US 8,277,922
Granted Patent B2
US 8,277,922 · App. 11/833,846 · Granted Oct 2, 2012

Stem web

Assignee: 3M Innovative Properties Company
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Quick Facts
Patent No.
US 8,277,922
App. No.
11/833,846
Granted
Oct 2, 2012
Kind
B2
Abstract

A stem web is disclosed that comprises a backing layer having a first surface and a second surface, and an array of 600 to 20000 upstanding stems projecting from the first surface of the backing. The stems comprise a height from 0.3 and 2.0 millimeters and a shore hardness less than 90A. In one embodiment, the stem web further comprises a reinforcing layer secured to the second surface. In one embodiment, the stem web is secured to a tool to be passed across a surface to be cleaned to capture lint and hair.

Claims (27)

1. A stem web comprising:

a backing layer having a first surface and a second surface;

an array of from 50 to 1000 upstanding stems per square centimeter projecting from the first surface of the backing, wherein each stem is solid, flexible, has a height from 0.3 to 2.0 millimeters, a shore hardness less than 70A, and at least a portion of each stem being formed from elastomeric material, wherein an entirety of each stem projects in a planar direction away from the first surface.

2. The stem web of claim 1 , wherein each stem comprises a height from 0.5 and 1.5 millimeters.

3. The stem web of claim 1 , further comprising an array of from 50 to 250 stems square centimeter.

4. The stem web of claim 1 , wherein the backing layer is integrally formed with the stems.

5. The stem web of claim 1 , wherein the stems are a poly-olefin based thermoplastic elastomer material.

6. The stem web of claim 1 , wherein each stem comprises an aspect ratio from 2 to 4.

7. The stem web of claim 6 , wherein each stem comprise an aspect ratio from 2.5 to 3.

8. The stem web of claim 1 , wherein the array of stems comprises an open volume from 60 to 98%.

9. The stem web of claim 1 , wherein the stems are wiped across a surface to capture debris, lint or hair.

10. The stem web of claim 9 , wherein at least 60% of hair on a surface to be cleaned is captured by the stems.

11. The stem web of claim 1 , further comprising a reinforcing layer secured to the second surface of the backing.

12. The stem web of claim 11 , wherein the reinforcing layer provides an attachment surface to secure the backing to an independent surface comprising a hook.

13. The stem web of claim 11 , wherein the reinforcing layer is a woven, knitted, nonwoven, or scrim.

14. The stem web of claim 12 , wherein the reinforcing layer is a knitted loop.

15. The stem web of claim 1 , wherein the stem web is secured to a tool with the array of stems facing outwardly away from the tool to be passed across a surface to be cleaned to capture lint and hair.

16. A stem web comprising:

an elastomeric backing layer having a first surface and a second surface integrally formed with an array of upstanding stems projecting from the first surface of the backing, wherein the stems comprise a height from 0.5 and 1.5 millimeters, a density of 50 to 250 stems/cm 2 , a shore hardness of less than 105A, and a coefficient of friction of at least 0.8, wherein an entirety of each of the stems projects in a planar direction away from the first surface and wherein each stem includes a base adjacent to the backing layer and a tip distal to the backing layer, each stem tapering inward from the base to the tip; and

a reinforcing layer secured to the second surface of the backing layer for providing an attachment surface.

17. The stem web of claim 16 , wherein the reinforcing layer is a woven, knitted, nonwoven, or scrim.

18. The stem web of claim 16 , wherein the stems are wiped across a surface to capture debris, lint or hair.

19. The stem web of claim 18 , wherein at least 70% of hair on a surface to be cleaned is captured by the stems.

20. The stem web of claim 1 , wherein each of the stems have a coefficient of friction greater than 0.8.

21. The stem web of claim 1 , wherein each stem is molded integrally with the backing layer.

22. The stem web of claim 1 , wherein the array of stems has a static coefficient of friction when dry of at least 0.6 and a static coefficient of friction when wet within 20% of the static coefficient of friction when dry.

23. The stem web of claim 1 , wherein each stem includes a base adjacent to the backing layer and a tip distal to the backing layer, each stem tapering inward from the base to the tip.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 6, 2007
From: TUMAN, SCOTT J.; KOBE, JAMES J.; LEVITT, LEON
To: 3M INNOVATIVE PROPERTIES COMPANY
Reel/Frame 020078/0121 →
Continuity (4)
Continuation In Part 09982741 · Oct 17, 2001
Continuation In Part 09637567 · Aug 11, 2000
Continuation In Part 09166837 · Oct 5, 1998
Related Publication 20080035173A1 · Feb 14, 2008