CN215873541U

CN215873541U - Paste formula gauze mask

Info

Publication number: CN215873541U
Application number: CN202121501680.7U
Authority: CN
Inventors: 杨东宁
Original assignee: Shenzhen Three Science And Technology Co ltd
Current assignee: Shenzhen Three Science And Technology Co ltd
Priority date: 2021-07-04
Filing date: 2021-07-04
Publication date: 2022-02-22
Anticipated expiration: 2031-07-04

Abstract

The utility model provides a sticking type mask, which uses a support frame to keep a bowl-shaped structure of the mask; the filtering piece adopts a single-layer structure to achieve a high protection effect; the annular pasting piece improves the tightness of the mask and enables the mask to be worn more comfortably. The protective performance of the adhesive mask of the utility model is far superior to that of the conventional KN95 mask; the breathing resistance is much lower than that of the conventional KN95 mask; and the manufacturing cost is lower.

Description

Paste formula gauze mask

Technical Field

The utility model relates to the field of personal protection products, in particular to an adhesive mask.

Background

At present, the new coronavirus spreads all over the world, and many people use a flat surgical mask to resist viruses. However, the surgical mask has a high leakage rate, and the surgical mask is usually composed of three layers of materials, so that the surgical mask has high breathing resistance and is uncomfortable; in addition, wearing the ear belt mask for a long time may cause ear discomfort. The middle layer of the surgical mask is a main filtering layer, the inner layer and the outer layer are spun-bonded non-woven fabrics, and the surgical mask mainly plays a role in supporting and protecting the mask although the surgical mask also has a filtering effect.

The leakage of the surgical mask is mainly caused by the fact that the periphery and the face of the mask are not tightly attached. Patent CN205143566U provides a cordless mask, which is made of three layers of materials. This patent causes the uncomfortable problem of ear through having solved ear belt formula gauze mask, has reduced revealing of gauze mask simultaneously. But the three layers of materials bring greater breathing resistance, and simultaneously, the cost of the mask is increased, and more plastic pollution is brought.

SUMMERY OF THE UTILITY MODEL

The utility model provides the adhesive mask with low cost, low leakage rate, low breathing resistance and high comfort level, aiming at overcoming the problems of high leakage rate, large breathing resistance, uncomfortable wearing and the like of the conventional mask.

The mask comprises a filter element, a support element and an adhesive element; the support piece comprises a support frame for keeping the mask in a bowl shape; the pasting piece is arranged on the edge of the inner side of the mask; the filter is made of melt-blown nonwoven fabric.

In one embodiment, the filter element is of a single or double layer construction.

In one embodiment, each layer of the filter element has a filtration efficiency of greater than 80% for particulate matter having an average particle size of 0.3 microns at an airflow of 32L/min.

In one embodiment, the support frame comprises at least two intersecting support bars.

In one embodiment, the support member comprises a support ring disposed around the perimeter of the mask and adapted to conform to the shape of the face.

In one embodiment, the support element is arranged on the inside of the filter element.

In one embodiment, the support is made of one or more materials of a polymer and a metal.

In one embodiment, the support member is made by connecting a support sheet of the frame structure and the filter member.

In one embodiment, the support sheet is made of a spunbond nonwoven fabric.

In one embodiment, the support sheet and the filter element are welded together by ultrasonic welding.

In one embodiment, the adhesive member is ring-shaped.

In one embodiment, the spunbond nonwoven fabric comprises one or more of polypropylene (PP) fibers, Polyethylene (PE) fibers, polyester fibers, polyamide fibers, polyacrylic fibers, and viscose fibers.

In one embodiment, the adhesive device comprises one or both of a pressure sensitive adhesive and a gel.

In one embodiment, the mask includes a release film covering the adhesive member.

Compared with the prior art, the utility model has the obvious advantages and beneficial effects that:

1) use the inside and outside two-layer non-woven fabrics layer in support piece replaces conventional gauze mask, for the gauze mask provides the support, has bowl form spatial structure, has reduced respiratory resistance by a wide margin, has promoted the comfort level of gauze mask.

2) The annular pasting piece is used for replacing the mask tightening belt, so that the air tightness of the mask is greatly improved, discomfort caused when the tightening belt is worn is avoided, and the comfort level of the mask is improved.

3) Compared with the conventional mask, the mask has the advantages that the inner and outer non-woven fabric layers, the nose bridge strip and the binding belt are omitted, the manufacture is simpler, and the cost is greatly reduced

4) Compared with the conventional surgical mask or the N95 mask, the usage amount of plastic is reduced by more than 70%, and the mask is convenient to recycle and more environment-friendly.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It is noted that the drawings may not be to scale for clarity of illustration and that this does not detract from the understanding of the utility model. The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

Drawings

Fig. 1 is a schematic view of the back structure of the mask of the first embodiment (without a release film);

fig. 2 is an exploded view of the mask of the first embodiment;

FIG. 3 is a schematic view of a filter plate of the filter pack of the first embodiment;

FIG. 4 is a side sectional view of the mask of the first embodiment

Fig. 5 is a schematic front view of a mask according to a second embodiment;

FIG. 6 is a schematic front view of a support member of the second embodiment;

fig. 7 is an exploded view of the mask of the second embodiment;

fig. 8 is a side sectional view of the edge of the mask of the second embodiment;

fig. 9 is a schematic front view of a mask according to a third embodiment;

fig. 10 is a schematic view of a support sheet of the third embodiment;

fig. 11 is an exploded view of the mask of the third embodiment;

fig. 12 is a side sectional view of the edge of the mask of the third embodiment;

figure 13 is a schematic view of a support sheet of the fourth embodiment;

fig. 14 is a schematic front view of a mask according to a fourth embodiment;

FIG. 15 is a schematic view of a support stand of the fifth embodiment;

figure 16 is a schematic view of an adhesive attachment of a fifth embodiment.

The attached drawings are as follows:

1. filter element 2, support element 3, and adhesive element

4. Release film 11, filter sheet 20 and support frame

21. Longitudinal support bar 22, transverse support bar 23, support ring

231. Connection end 232, filter element and ring-shaped welded part of support ring

24. Support sheet 241, longitudinal belt

31. Substrate 32, adhesive layer 311, and non-adhesive region

321. Pressure sensitive adhesive area 322, gel area

Detailed Description

Term(s) for

In the description of the present invention, it is to be noted that the terms are only for convenience of description and simplified description, and are not to be construed as limiting the present invention.

As used herein, the term "filter" refers to the components of the mask that filter air; for example, the filter of a conventional surgical mask has a three-layer structure, and the middle layer of melt-blown cloth is a main filter layer.

As used herein, the term "support frame" refers to a frame comprised of a plurality of support bars; the simplest support frame is formed by crossing two support bars; the support frame also includes a frame structure, such as a frame consisting of annular support bars (support rings) and other support bars.

As used herein, the term "face" is meant to include the cheekbones, cheeks, chin, nose.

As used herein, the term "medial" refers to the side of the face of the user that faces when worn.

As used herein, the term "lateral" refers to the side of the wearer that faces away from the face of the wearer when worn.

As used herein, the term "longitudinal" corresponds to a head up and down direction when worn.

As used herein, the term "lateral" corresponds to a left-right direction of the head when worn.

The utility model is further explained below with reference to specific examples.

A first embodiment of the present invention provides a mask, and the structure of the mask is shown in fig. 1 to 4. The mask comprises a filter piece 1, a support piece 2, an adhesive piece 3 and a release film 4. The filter element 1 is made of a single-layer melt-blown nonwoven fabric and has a filtration efficiency of more than 99% (the filtration efficiency for particles having an average particle size of 0.3 μm at an air flow rate of 32L/min). The filter element 1 is formed by connecting the edges of two mirror-symmetrical filter sheets 11 shown in fig. 3, and in this embodiment, the corresponding edges of the two filter sheets 11 are welded together by ultrasonic welding, or the edges can be connected by adhesive.

As shown in fig. 1 and 2, the supporting member 2 in this embodiment includes a supporting frame 20, which is formed by a longitudinal supporting bar 21 and a transverse supporting bar 22 crossing each other in a crisscross manner. The support strips are cut from polyethylene terephthalate (PET) sheet and are bent with tension so that the two criss-crossing support strips support the filter element 1 in a three-dimensional bowl shape and also maintain the bowl shape while the user breathes. If do not have support piece, filter because too soft, can not rely on self to maintain the spatial structure of gauze mask, the spatial structure can collapse when breathing in, causes the resistance of breathing in to increase greatly even unable normal breathing. The support member 2 may be used by being stuck inside the filter member 1.

Fig. 4 shows that the mask of the first embodiment has a three-layer structure of the edge, which includes a filter member 1, an adhesive member 3 and a release film 4. The adhesive member 3 of this embodiment is formed in a ring shape around the peripheral edge of the mask and conforms to the shape of the face. The adhesive member 3 is formed by coating a pressure sensitive adhesive on the peripheral edge of the filter member 1. The pressure-sensitive adhesive is acrylate pressure-sensitive adhesive, and rubber pressure-sensitive adhesive can also be adopted. The inner side of the adhesive member 3 is covered with a release film 4, which is easy to peel. When in use, the release film 4 is uncovered, and the face of the mask containing the pasting piece 3 faces the face and is pasted on the face for use.

Compared to the first embodiment, the support member 2 of the second embodiment includes the support frame 20 of fig. 1, and a support ring 23 is added, and the support ring 23 is made of spun-bonded nonwoven fabric. Fig. 6 shows the front structure of the support member 2, and the support ring 23 surrounds the peripheral edge of the mask and has four protruding connection ends 231, which are respectively connected with a longitudinal support bar 21 and a transverse support bar 22, and can be connected by hot melting or gluing. The annular portion of the support ring 23 and the edge of the filter element 1, except for the attachment end 231, are welded together by ultrasonic welding to form an annular welded portion 232 of the filter element and support ring as shown in fig. 5, which includes a plurality of small square-shaped weld points.

As shown in fig. 7 and 8, the adhesive member 3 of this embodiment is applied to the support ring 23. The adhesive member 3 of this embodiment is a double-sided tape, the base material 31 is foam, and both sides are covered with the adhesive layer 32, which is made of a pressure sensitive adhesive. After the edges of the filter piece 1 and the support piece 2 of the mask are welded, one surface of the pasting piece 3 with the surface covered by the release film 4 is pasted on the support ring 23, and then the manufacturing of the pasting type mask can be completed. Fig. 8 shows that the edge of the mask has a six-layer structure, which comprises a filter member 1, a support ring 23, an adhesive layer 32, a substrate 31, an adhesive layer 32 and a release film 4. The support ring 23 can enhance the strength of the edge of the mask and avoid being torn when in use; meanwhile, the longitudinal support bars and the transverse support bars are fixed, so that the three-dimensional structure of the mask is more stable. The filter of this embodiment is a single-layer meltblown nonwoven fabric, as in the first embodiment.

Fig. 9 to 12 show the structure of the third embodiment. In the third embodiment, two mirror-symmetrical support sheets 24 as shown in fig. 10 are used to make the support member, and the support sheets 24 are frames with hollow-out middle parts and made of spun-bonded non-woven fabric. This embodiment uses four support tabs 24, two mirror images. Firstly, placing two identical support sheets 24 on the inner side and the outer side of the filter sheet with the same shape, and welding the parts except the longitudinal belt 241 together by using ultrasonic waves; welding the other two same support sheets 24 and the other corresponding filter sheet together by the same method; finally, the longitudinal bands 241 of the four support sheets and the corresponding parts of the two filter sheets are welded together to form the longitudinal support strip 21 shown in fig. 9 and 11. The rest of the support sheet 24 is welded by ultrasonic waves to the filter element 1 to form a plurality of transverse support strips 22 and support rings 23.

In this embodiment, the four support sheets 24 and the filter sheet 11 are welded by ultrasonic waves to form a frame-type support frame. The mask manufactured by the method has more stable three-dimensional structure, and the filter piece is more difficult to tear in the using process; meanwhile, only a single-layer melt-blown nonwoven fabric (the filtering performance is the same as that of the first embodiment) is used for the filter, and the breathing resistance is low.

Fig. 12 shows that the mask edge of the present embodiment has a multi-layer structure, which includes a support ring 23, a filter member 1, a support ring 23, an adhesive member 3 and a release film 4. The adhesive member 3 may be an adhesive tape without a base material, or may be a double-sided adhesive tape with a base material.

The fourth embodiment also uses a support sheet to make the support member, as in the third embodiment, but only two sheets are used. As shown in fig. 13, compared with the third embodiment, there are two more longitudinal supporting strips for each supporting strip 24, so that the amount of supporting strips can be reduced while the area of ultrasonic welding is increased while the strength of the mask is ensured. Firstly, a support sheet 24 is placed on the inner side of the filter sheet with the same shape, and the parts except the longitudinal belt 241 are welded together by using ultrasonic waves; welding the other mirror-symmetrical support sheet 24 and the corresponding filter sheet together by the same method; and finally, welding the longitudinal belt 241 of the two support sheets and the corresponding parts of the two filter sheets together. The mask shown in fig. 14 has a plurality of square welds formed on the front side of the mask and a support tab located on the inside of the mask. The structure of the edge of this embodiment is the same as that of fig. 8, and the filter member 1, the support ring 23, the adhesive member 3 and the release film 4 are arranged in this order.

The filter element 1 of the fifth embodiment is identical to the first embodiment; the fifth embodiment employs a support frame 20 as shown in fig. 15 to support the filter member 1. The support frame 20 consists of a longitudinal support bar 21, a transverse support bar 22 and a support ring 23, the longitudinal support bar 21 and the transverse support bar 22 intersecting in a criss-cross manner. The supporting strips and the supporting rings are both cut from PET sheets. The support frame made of the PET material has elasticity and can keep the bowl shape of the mask.

As shown in fig. 16, the adhesive member 3 of the present embodiment comprises a substrate 31 and a glue layer 32; the substrate 31 is a non-woven fabric, and has an area larger than that of the glue layer 32, and the outer edge of the substrate 31 is a glue-free area 311. The adhesive layer 32 is divided into eight areas, namely a pressure-sensitive adhesive area 321 and a gel area 321; four pressure sensitive adhesive areas 321 are provided, corresponding to the bridge of the nose, chin, and left and right cheek areas. The gel is silicone gel and has no harm to skin. If the glue layer is totally made of gel, the mask can be fixed on the face by a larger pasting area and is easy to slide. The gel and the pressure-sensitive adhesive are used together, so that the dosage of the gel can be reduced, and the skin discomfort caused by using the pressure-sensitive adhesive can be reduced. The gel zone 321 may also be replaced by other skin-friendly materials.

When the mask is manufactured, the non-adhesive area 311 and the edge of the filter piece 1 are welded together by ultrasonic waves; the holder 20 is then inserted, with the support ring 23 between the filter element 1 and the adhesive element 3.

After the mask of the five embodiments is tested, the total leakage rate of the mask worn by an experimenter is lower than 1% and far lower than that of most commercially available KN95 masks (the total leakage rate is 3-20%), the respiratory resistance is only 20% -50% of that of the KN95 mask, and the manufacturing cost is also lower than that of the KN95 mask. To further reduce the leakage rate, the filter element may be replaced by a double-layer meltblown nonwoven fabric. In practical use, however, the single-layer melt-blown non-woven fabric with high filtering efficiency can meet the epidemic prevention and dust prevention requirements of most people.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. A mask, characterized in that it comprises a filter, a support and an adhesive; the support piece comprises a support frame for keeping the mask in a bowl shape; the pasting piece is arranged on the edge of the inner side of the mask; the filter is made of melt-blown nonwoven fabric.

2. The mask of claim 1 wherein said filter is a single or double layer structure, each layer having a filtration efficiency of greater than 80% for particles having an average particle size of 0.3 microns at an airflow of 32L/min.

3. The mask of claim 1 wherein said support frame comprises at least two intersecting support bars.

4. The mask of claim 3 wherein said support comprises a support ring disposed around the perimeter of the mask to conform to the shape of the face.

5. The mask of claim 1 wherein said support member is made by connecting a support piece of a frame structure to said filter member.

6. The mask of claim 5 wherein said support sheet is made of a spunbond nonwoven.

7. The mask of claim 5 wherein said support sheet and said filter are welded together by ultrasonic welding.

8. The mask of claim 1 wherein said adhesive member is annular.

9. Mask according to claim 1, characterized in that said adhesive means comprise a layer of glue made of pressure-sensitive adhesive and/or a layer of glue made of gel.

10. The mask of claim 1 wherein said mask includes a release film covering said adhesive patch.