Dispensable face mask and method of making the same

Patent metadata

Field	Value
Publication number	US-9616258-B2
Application number	US-201113581931-A
Country	US
Kind code	B2
Filing date	Mar 1, 2011
Priority date	Mar 3, 2010
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

A method of making a face mask is disclosed. The method includes providing an elastic nonwoven web continuous in a machine direction, the elastic nonwoven web having a central lane extending in the machine direction; bonding a filtering web to the central lane of the elastic nonwoven web to provide a layered web, the filtering web being continuous in the machine direction and having a cross-web width that is substantially the same as the cross-web width of the central lane; and stamping a face mask into the layered web. A face mask and a continuous layered web having a plurality of face masks disposed thereon are also disclosed.

First claim

What is claimed is:

1. A face mask comprising:
an elastic nonwoven sheet having an elongated shape, a central portion, first and second lateral end portions each flanking the central portion on opposite sides, a first opening in the first lateral end portion, and a second opening in the second lateral end portion; and
a filtering web portion bonded to the central portion of the elastic nonwoven sheet, wherein the filtering web portion is bonded to the central portion in a manner such that the central portion has a reduced elongation in at least one direction relative to the first and second lateral end portions, wherein the filtering web portion has at least two pleats, and wherein the elastic nonwoven sheet has at least two cuts in the central portion and wherein a number of cuts is the same as a number of pleats.

2. A method of making the face mask of claim 1 , the method comprising:
providing an elastic nonwoven web continuous in a machine direction, the elastic nonwoven web having a central lane extending in the machine direction, the central lane having a cross-web width;
bonding a filtering web to the central lane of the elastic nonwoven web to provide a layered web, the filtering web being continuous in the machine direction and having a cross-web width that is substantially the same as the cross-web width of the central lane, wherein the filtering web has at least two pleats extending in the machine direction;
stamping a face mask into the layered web, the face mask comprising a portion of the elastic nonwoven web and a portion of the filtering web, the portion of the elastic nonwoven web having an elongated shape with a central portion stamped from the central lane of the elastic nonwoven web and first and second lateral end portions each flanking the central portion on opposite sides, wherein the portion of the filtering web is bonded to the central portion, wherein the face mask further comprises a first opening in the first lateral end portion and a second opening in the second lateral end portion; and
intermittently slitting the center lane of the elastic nonwoven web so that at least two cuts is provided in the central portion of the face mask.

3. The method according to claim 2 , further comprising:
bonding a second web continuous in the machine direction to the central portion of the elastic nonwoven web to provide the layered web.

4. The method according to claim 3 , further comprising pleating at least one of the filtering web or the second web such that it has at least two pleats extending in the machine direction.

5. The face mask according to claim 1 , wherein the central portion at a top edge and a bottom edge of the face mask has a reduced elongation relative to the central portion between the top edge and the bottom edge.

6. The face mask according to claim 1 , wherein the at least two cuts in the central portion has a length that is at least 30 percent of a longitudinal dimension of the face mask.

7. The face mask according to claim 1 , further comprising a second web portion directly or indirectly bonded to the central portion of the elastic nonwoven sheet.

8. The face mask according to claim 7 , wherein the second web portion has at least two pleats.

9. The face mask according to claim 1 , wherein at least a portion of the central portion of the elastic nonwoven sheet has an elongation of less than fifteen percent, or wherein at least a portion of the central portion of the elastic nonwoven sheet has an elongation of at least 70 percent.

10. A dispenser comprising a container enclosing a plurality of face masks comprising a face mask according to claim 1 , the container having at least one side with an aperture for removing the plurality of face masks.

11. The dispenser according to claim 10 , wherein the dispenser is in the shape of a prism, and wherein the plurality of face masks are placed on top of a support in the base of the prism.

12. A continuous layered web comprising a plurality of face masks according to claim 1 consecutively positioned in a machine direction, the continuous layered web having a first longitudinal edge and a second longitudinal edge, each of the face masks comprising a portion of an elastic nonwoven web and a portion of a filtering web, the portion of the elastic nonwoven web having an elongated shape, a central portion, and first and second lateral end portions each flanking the central portion on opposite sides, the first lateral end portion extending to the first longitudinal edge of the continuous layered web and the second lateral end portion extending to the second longitudinal edge of the continuous web, wherein the portion of the filtering web is bonded to the central portion.

13. The continuous layered web of claim 12 , wherein there are spaces between the face masks in the plurality of face masks.

14. The face mask according to claim 1 , further comprising an adhesive tape or an adhesive strip disposed on at least one of a top or a bottom edge of the face mask, wherein the adhesive tape or the adhesive strip is provided with a removable liner.

15. The face mask according to claim 1 , wherein the at least two flat pleats are configured to expand into an opening formed from the at least two cuts in the central portion of the elastic nonwoven sheet.

16. The face mask according to claim 1 , further comprising a pad removable through the at least one cut.

17. The face mask according to claim 1 , wherein the at least two cuts in the central portion extend in the direction of the at least two pleats and are positioned over the at least two pleats.

18. A flat, stretchable face mask comprising a layer of elastic material and at least one partial layer of a flat-pleated material having at least two flat pleats, wherein the elastic layer comprises first and second lateral end portions each configured to at least partially extend around opposite sides of a person's face to engage an ear of the person, wherein there is at least two cuts in the layer of elastic material extending in the direction of the at least two flat pleats, wherein upon stretching the flat, stretchable face mask around opposites sides of the person's face, the elastic material stretches and the at least two flat pleats at least partially opens to expand the at least one partial layer, and wherein the at least two flat pleats are configured to expand into an opening formed from the at least two cuts in the layer of elastic material; and wherein a number of cuts is the same as a number of pleats.

Assignees

• Tsuei Alexander C
• 3M Innovative Properties Co

Inventors

• Tsuei Alexander C

Classifications

• A41D13/1115

  with a horizontal pleated pocket · CPC title

• B65H45/24

  Interfolding sheets, e.g. cigarette or toilet papers · CPC title

• A62B23/025 Primary

  the filter having substantially the shape of a mask (surgical face masks A41D13/11) · CPC title

• Y10T156/1023

  Surface deformation only [e.g., embossing] · CPC title

• Y10T156/1015

  Folding · CPC title