Absorbent non-woven mat having perforations or scoring

• US 20060286334A1
• Filed: 06/17/2005
• Published: 12/21/2006
• Est. Priority Date: 06/17/2005
• Status: Abandoned Application

• Current Assignee: Gregory Scott Harpole
• Original Assignee: Batam, LLC
• Inventors: Harpole, Gregory Scott
• Application Number:
  US11/156,017
• Publication Number:
  US 20060286334A1
• Time in Patent Office: Days
• US Class Current: 428/43
• CPC Class Codes: A47G 27/0206 to protect the underlying surface, e.g. temporary covers, disposable carpets, absorbent pads, wheelchair pads, hearth rugs
• CPC Class Codes: A61G 13/102 Fluid drainage means for collecting bodily fluids from the operating table, e.g. for blood, urine drainage on the patient A61M1/00
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/24025 Superposed movable attached layers or components
• CPC Class Codes: Y10T 428/24331 including nonapertured component

Abstract

An absorbent mat designed to be placed on hospital floors in order to catch and absorb bodily fluids and other liquids. The mat has multiple layers of nonwoven materials laminated to a liquid-impermeable film layer. According to one embodiment, the mat is perforated or scored through at least part of the absorbent portion of the mat and may be easily torn along the perforations or scoring marks so that segments of the mat may be conveniently separated from one another. According to another embodiment, the nonwoven portion of the mat includes an upper hydrophilic spunbond or needle punched layer and lower hydrophilic meltblown layer or, alternatively, an upper hydrophilic spunbond or needle punched layer, intermediate hydrophilic meltblown layer, and lower hydrophobic spunbond layer.

Claims

1. An absorbent mat comprising:

a nonwoven laminate having an upper and a lower surface, said laminate comprising an upper spunbond or needle punched layer and an underlying meltblown layer adjacent to the upper layer; and

a continuous and water-impermeable polymer film layer applied to the lower surface of the nonwoven laminate;

said mat further comprising perforations or scoring extending through at least a portion of the thickness of the nonwoven laminate but not extending through said polymer film layer.

2. The absorbent mat of claim 1, wherein the upper layer is a spunbond layer.

3. The absorbent mat of claim 1, wherein the upper layer is a needle punched layer.

4. The absorbent mat of claim 1, wherein the upper layer is a spunbond and needle punched layer.

5. The absorbent mat of claim 1, wherein the nonwoven laminate comprises

an upper spunbond nonwoven layer;

and,

a meltblown nonwoven layer;

wherein the polymer film is applied to the meltblown nonwoven layer.

6. The absorbent mat of claim 5, wherein the upper spunbond layer and intermediate meltblown layer are comprised of hydrophilic fibers.

7. The absorbent mat of claim 1, wherein the laminate is needle punched.

8. The absorbent mat of claim 1, wherein the nonwoven laminate comprises

an upper spunbond nonwoven layer;

an intermediate meltblown nonwoven layer; and

,

a lower spunbond nonwoven layer;

wherein the polymer film is applied to the lower spunbond nonwoven layer.

9. The absorbent mat of claim 8, wherein the upper spunbond layer is comprised of hydrophilic fibers and the lower spunbond layer is comprised of hydrophobic fibers.

10. The absorbent mat of claim 1, wherein the polymer film layer is adhesively or thermally bonded to the nonwoven laminate.

11. The absorbent mat of claim 1, wherein the mat is capable of being separated into sections along the perforations or scoring.

12. The absorbent mat of claim 1, wherein the nonwoven laminate comprises

an upper needle punched nonwoven layer;

and,

a meltblown nonwoven layer;

wherein the polymer film is applied to the meltblown nonwoven layer.

13. The absorbent mat of claim 12, wherein the upper needle punched layer and intermediate meltblown layer are comprised of hydrophilic fibers.

14. The absorbent mat of claim 12, wherein

the upper needle punched layer is comprised of one or more plies;

and,

the intermediate meltblown layer is comprised of one or more plies.

15. The absorbent mat of claim 1, wherein the nonwoven laminate comprises

an upper needle punched nonwoven layer;

an intermediate meltblown nonwoven layer; and

,

a lower spunbond nonwoven layer;

wherein the polymer film is applied to the lower spunbond nonwoven layer.

16. The absorbent mat of claim 15, wherein the upper needle punched layer is comprised of hydrophilic fibers and the lower spunbond layer is comprised of hydrophobic fibers.

20. A method of separating a mat loaded with a liquid, the steps comprising

providing the absorbent mat of claim 1;

loading the mat with a liquid; and

separating the loaded mat about the perforations or scoring into at least two segments.

17. An absorbent mat comprising:

a nonwoven laminate having an upper spunbond or needle punched layer of hydrophilic fibers adjacent to an intermediate meltblown nonwoven layer of hydrophilic fibers adjacent to a lower nonwoven layer of hydrophobic fibers; and

,

a continuous and water-impermeable polymer film layer attached to the lower layer.

18. The absorbent mat of claim 17, wherein perforations or scoring extend through at least a portion of the thickness of the nonwoven laminate and the mat comprises at least two segments separable about the perforations or scoring, wherein the polymer film does not substantially prevent the mat from being torn along the perforations or scoring.

19. A method of making an absorbent mat that is easily separated into segments, the method comprising the steps of

forming a nonwoven laminate having an upper and lower surface, said laminate comprising an upper spunbond and/or needle punched layer adjacent to an underlying meltblown layer;

scoring or perforating the nonwoven laminate through at least a partial thickness of the nonwoven laminate, thereby defining segments of the mat divided by at least one weakening line; and

applying a continuous water-impermeable film layer to the lower surface of the scored or perforated laminate.