CN215224929U

CN215224929U - PLA full degradation gauze mask

Info

Publication number: CN215224929U
Application number: CN202120351465.7U
Authority: CN
Inventors: 林晓扬; 梁瀚中
Original assignee: Longyan Xingtailiang Technology Co ltd
Current assignee: Longyan Xingtailiang Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-12-21
Anticipated expiration: 2031-02-08

Abstract

The utility model relates to the field of masks, in particular to a PLA fully-degradable mask, which comprises a mask body, a nose bridge strip and an ear band, wherein the mask body is formed by mutually compounding an outer PLA layer and an inner PLA layer, the outer PLA layer is a PLA non-woven fabric with the diameter of nanofiber of 10-500nm uniformly distributed, and the thickness of the outer PLA layer is 0.2-0.3 mm; the inner PLA layer is a PLA non-woven fabric with the diameter of 100-500nm and uniformly distributed nano fibers, and the thickness of the inner PLA layer is 0.2-0.3 mm; a nose bridge strip made of PLA material is embedded between the outer PLA layer and the inner PLA layer; the ear belt is made of elastic PLA material; the outer PLA layer, the inner PLA layer, the nose bridge strip and the ear band are fixed in an ultrasonic anastomosis mode. The production and processing process is simple, and the mask has the effects of smooth breathing and comfortable wearing when being used as an antibacterial and antiviral protective mask.

Description

PLA full degradation gauze mask

Technical Field

The utility model relates to a gauze mask field, concretely relates to PLA complete degradation gauze mask.

Background

In order to prevent pathogens from invading human bodies, most of protective masks on the market at present are disposable and disposable melt-blown masks; based on cost consideration and processing convenience, most of the prior melt-blown cloth masks are made of polypropylene fibers and are difficult to degrade in natural environment, and degradation products formed in decomposition contain micro-plastics, so that micro-plastic particles can permeate into soil and enter a water circulation system along with water flow to pollute the environment; when large-scale epidemic situation attacks occur, the mask is used in a large amount, and the environment is stressed; moreover, the melt-blown mask which is difficult to degrade in natural environment can become a new hidden propagation source after being discarded after use, so that the prevention and control pressure of epidemic situation is increased greatly.

The bio-based polylactic acid (PLA) fiber is a synthetic fiber prepared by extracting starch from plants such as corn, wheat and the like, converting the starch into lactic acid through a biological bacteria fermentation technology, and then polymerizing and spinning the lactic acid. It has the advantages of both natural fiber and synthetic fiber, and has the features of complete biodegradation and natural biological circulation.

In the prior art, a PLA material is used as a mask fabric in the market, but in order to ensure both protective property and air permeability, the PLA material and a polypropylene fiber melt-blown fabric material are required to be compounded to form a multilayer composite fabric, so that the PLA material is difficult to fully degrade; recently, full polylactic acid fiber is adopted as mask fabric, the manufactured mask with protective property has certain technical development, for example, a polylactic acid fiber antibacterial degradable mask disclosed in patent CN212368385U, the mask body adopts a five-layer filter cloth structure, the first filter cloth is a soft skin-friendly polylactic acid fiber spun-bonded non-woven fabric with water absorption property, the second filter cloth and the third filter cloth are electret treated melt-blown fabrics (preferably polylactic acid fiber melt-blown fabrics), the fourth filter cloth is polylactic acid fiber spun-bonded non-woven fabric, the fifth filter cloth is polylactic acid fiber spun-bonded non-woven fabric with waterproof treatment, the natural antibacterial skin-friendly of polylactic acid is utilized, and the biodegradable purpose can be achieved by discarding the advantages of biodegradable fabric and the like. However, in order to ensure the antibacterial effect, the mask body adopts a five-layer polylactic acid fiber structure, but the mask body has the characteristics of heat preservation, heat insulation, moisture prevention and damp prevention, so that the mask has the defect of poor air permeability when worn, and meanwhile, carbon dioxide in the mask is difficult to release, so that a wearer feels airy after wearing the mask for a long time and is not suitable for wearing the mask for a long time.

Disclosure of Invention

An object of the utility model is to provide a PLA fully degradable gauze mask, its production and processing process is simple, when can regard as antibiotic, antiviral protective facial mask to use, the gauze mask possesses to breathe smoothly and wears comfortable effect.

A PLA full-degradable mask comprises a mask body, a nose bridge strip and an ear band, wherein the mask body consists of an outer PLA layer and an inner PLA layer from outside to inside, the outer PLA layer is a PLA non-woven fabric with uniformly distributed nano fibers with the diameter of 10-500nm, and the thickness of the outer PLA layer is 0.2-0.3 mm; the inner PLA layer is a PLA non-woven fabric with the diameter of 100-500nm and uniformly distributed nano fibers, and the thickness of the inner PLA layer is 0.2-0.3 mm; a nose bridge strip made of PLA material is embedded between the outer PLA layer and the inner PLA layer; the ear belt is made of elastic PLA material; the outer PLA layer, the inner PLA layer, the nose bridge strip and the ear band are fixed in an ultrasonic anastomosis mode.

Furthermore, the gauze mask body constitute by upper segment portion, well piece portion, the lower piece portion that is the banding, the last transition between upper segment portion and the well piece portion is followed, the lower transition between well piece portion and the lower piece portion is followed through the anastomotic fixation of ultrasonic wave to make the gauze mask body be the bow-shaped under the natural state.

Furthermore, the nose bridge strip is embedded in the middle of the upper piece part; the middle sheet part at least sufficiently covers the mouth-nose area; the lower panel portion is at least sufficient to cover the middle of the mandible.

Furthermore, the upper sheet part, the middle sheet part and the lower sheet part are all in a strip shape with a wider middle part and narrower two sides.

Furthermore, the middle sheet part is a cambered surface with the middle part protruding upwards and downwards, and at least enough to cover the mouth and nose area; the left and right sides of the middle piece part extend to form a left strip and a right strip which can at least cover two cheeks.

Further, the upper side of the upper sheet part is in a ridge shape which is raised upwards.

Furthermore, the nose bridge strip is arranged below the ridge-shaped protrusion in the middle of the upper piece part.

Furthermore, any edge of the upper sheet part, the middle sheet part and the lower sheet part is folded and ultrasonically matched to form an annular edge.

Further, interior PLA layer inboard is smooth surface, handles through adopting the feeling agent to interior PLA layer, can make interior PLA layer form smooth surface to bring close skin's contact effect.

Further, the gram weight of the outer PLA layer is 25-35g/m²(ii) a The gram weight of the inner PLA layer is 25-30g/m²。

The utility model discloses at least, have following useful part:

1. the utility model has simple structure, reasonable design and simple production process, simultaneously, the PLA material has complete biodegradability, can be buried in soil or can be subjected to waste treatment in a biodegradable form, can be degraded into carbon dioxide and water in 3-6 months after treatment, is environment-friendly and can not cause pollution to the environment;

2. based on the design of the inner PLA layer and the outer PLA layer of the mask body, substances such as dust, smoke, fog, microorganisms and the like in the air can be effectively prevented or reduced from entering respiratory organs of a human body in a physical separation mode through the outer PLA layer of the PLA non-woven fabric with the diameter of the nano fibers being 10-500nm and uniformly distributed; compared with an electrostatic melt-blown cloth type protective mask, the electrostatic melt-blown cloth type protective mask adopts a physical blocking mode, so that the defect that dust, bacteria and other particles cannot be effectively adsorbed due to the fact that the static electricity of the melt-blown cloth mask fabric is reduced and disappeared due to the fact that water vapor is wetted is avoided, the service life of the mask can be effectively prolonged, and the product storage difficulty is reduced; the outer PLA layer is matched with PLA non-woven fabrics with the diameters of 100-500nm and uniform distribution of the nano fibers, so that good breathing smoothness can be brought to the mask; moreover, the wearing comfort of the mask can be improved by adopting a general skin-friendly treatment mode;

3. the shape of the mask is reasonably designed, so that the protection effect of the mask when being worn can be improved; moreover, the phenomenon of the mask loosening caused by facial movement such as communication and talking of the user when the mask is worn can be reduced.

Drawings

FIG. 1 is a schematic diagram of the present invention in layers;

fig. 2 is a schematic view showing the separation state of the upper, middle and lower pieces of the mask body of the present invention;

FIG. 3 is a schematic view of the mask of the present invention;

fig. 4 is a schematic view of the wearing state of the present invention.

Wherein, the corresponding relation of each item reference number in the drawings is as follows:

the mask comprises an outer PLA layer 01, an inner PLA layer 02, a mask body 1, a ring-shaped edge 10, an upper sheet part 11, a middle sheet part 12, a lower sheet part 13, a nose bridge strip 2, an ear band 3, an upper transition edge 41 and a lower transition edge 42.

Detailed Description

The invention is further illustrated by the following specific examples.

Examples

As shown in fig. 1-4, a PLA fully degradable mask comprises a mask body 1 formed by mutually compounding an outer PLA layer 01 and an inner PLA layer 02, a nose bridge strip 2 made of PLA material and an ear band 3 made of elastic PLA material, wherein:

by adopting the gram weight of 25-35g/m²The PLA non-woven fabric with the thickness of 0.2-0.3mm and the diameter of the nano-fiber of 10-500nm which is uniformly distributed is used as an outer PLA layer 01; the gram weight is 25-30g/m²The PLA non-woven fabric which is 0.2-0.3mm thick and has the nanofiber diameter of 100-500nm and is uniformly distributed is used as the inner PLA layer 02, and the inner PLA layer 02 is treated by adopting a spraying hand feeling agent, so that the inner side of the inner PLA layer 02 presents a smooth surface with skin-friendly texture.

Then, as shown in fig. 1, forming a mask body 1 material with an outer PLA layer 01 and an inner PLA layer 02 mutually compounded through a thermal compounding process; furthermore, a nose bridge strip 2 made of PLA material is correspondingly embedded between the inner PLA layer 02 and the outer PLA layer 01, so that a fixing part suitable for fixing the nose bridge of a user on the mask body 1 can be formed;

as shown in fig. 2, the non-woven composite fabric of the outer PLA layer 01 and the inner PLA layer 02 is used as the middle sheet part 12 and the lower sheet part 13, and the middle sheet part 12 is modified to have a cambered surface with a convex middle part at the upper and lower sides, and the left and right sides extend and are relatively smoothly gathered to form a strip-shaped structure with rectangular edges; the shape of the modified lower piece part 13 is a triangle strip-like structure with a wider middle part and narrower two sides, and the whole structure is similar to a triangle, and the upper edge of the structure is slightly convex upwards;

will bury outer PLA layer 01, interior PLA layer 02 composite nonwoven that PLA material nose bridge strip 2 underground as last piece portion 11 to the molding of modifying last piece portion 11 is middle part broad and both sides are narrower, and the adjustment middle part upside is the bellied spine that makes progress, takes the similar triangle strip column structure of hump, and the position of nose bridge strip 2 sets up in the spine protruding below at last piece portion 11 middle part.

After the edges of the upper piece 11, the middle piece 12 and the lower piece 13 are all folded inwards and ultrasonically anastomosed to form the annular edge 10, the left and right ear bands 3 are fixed to the left and right sides of the middle piece 12 in an anastomotic manner corresponding to ultrasonic waves, and then the upper transition edge 41 between the upper piece 11 and the middle piece 12 and the lower transition edge 42 between the middle piece 12 and the lower piece 13 are fixed in an anastomotic manner through ultrasonic waves, so that the mask body 1 is in an arch cover shape in a natural state, and the shape of the mask body is as shown in fig. 3.

As shown in fig. 4, when the mask of this embodiment is worn by a user, the upper side of the middle of the upper panel 11 is a ridge-shaped protrusion protruding upward, so as to be close to the bridge of the nose of the user, and the nose bridge strip 2 is bent to maintain the mask body 1 fixed to the bridge of the nose; the middle part of the middle sheet part 12 can fully cover the mouth and nose area, and the left side and the right side of the middle sheet part 12 extend to form a left strip and a right strip which can cover two cheeks; the lower piece 13 covers the middle of the lower jaw, and can surround and fix the face of the user together with the upper piece 11, the nose bridge strip 2, and the ear band 3, thereby reducing the loose phenomenon of the mask caused by the facial movement such as talking when the user wears the mask.

The mask product prepared in this example was prepared according to the method described in EN 149: 2001+ A1: 2009, the test criteria involved in the quality test were as follows:

the mask made in this example was tested for "carbon dioxide content in inhaled air" based on the criteria of clause 8.7, and the test results are shown in table 1:

TABLE 1

The mask made in this example was tested for "respiratory resistance (mbar)" based on the criteria of clause 8.9, and the test results are shown in table 2:

TABLE 2

A: right ahead B: vertical upward C: vertical downward D: toward the left side E: towards the right

The mask made in this example was tested for "filter penetration" based on the criteria of clause 8.11, and the test results are shown in table 3:

TABLE 3

The indexes can all meet EN 149: 2001+ A1: 2009 test standard, which tests the indexes of "carbon dioxide content in inhaled air", "breathing resistance" and "filtration penetration rate" and passes the test, reaches the mask level of FFP 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a PLA full degradation gauze mask, includes gauze mask body, nose bridge strip, ear area, its characterized in that: the mask body is formed by mutually compounding an outer PLA layer and an inner PLA layer, the outer PLA layer is a PLA non-woven fabric with uniformly distributed nano-fibers with the diameter of 10-500nm, and the thickness of the outer PLA layer is 0.2-0.3 mm; the inner PLA layer is a PLA non-woven fabric with the diameter of 100-500nm and uniformly distributed nano fibers, and the thickness of the inner PLA layer is 0.2-0.3 mm; a nose bridge strip made of PLA material is embedded between the outer PLA layer and the inner PLA layer; the ear belt is made of elastic PLA material; the outer PLA layer, the inner PLA layer, the nose bridge strip and the ear band are fixed in an ultrasonic anastomosis mode.

2. The PLA fully degradable mask of claim 1 wherein: the gauze mask body constitute by last piece portion, well piece portion, the lower piece portion that is the banding, the last transition between last piece portion and the well piece portion is followed, the lower transition between well piece portion and the lower piece portion is fixed through ultrasonic wave coincide to make the gauze mask body be the arched shield form under the natural state.

3. The PLA fully degradable mask of claim 2 wherein: the nose bridge strip is embedded in the middle of the upper piece part; the middle sheet part at least sufficiently covers the mouth-nose area; the lower panel portion is at least sufficient to cover the middle of the mandible.

4. A PLA fully degradable mask as in claim 3 wherein: the upper piece part, the middle piece part and the lower piece part are all in a strip shape with a wider middle part and narrower two sides.

5. The PLA fully degradable mask of claim 4 wherein: the middle piece part is a cambered surface with the middle part protruding upwards and downwards, and at least enough to cover the mouth and nose area; the left and right sides of the middle piece part extend to form a left strip and a right strip which can at least cover two cheeks.

6. The PLA fully degradable mask of claim 4 wherein: the upper side of the upper sheet part is in a ridge shape which is raised upwards.

7. The PLA fully degradable mask of claim 6 wherein: the nose bridge strip is arranged below the ridge-shaped protrusion in the middle of the upper piece part.

8. The PLA fully degradable mask of claim 2 wherein: any edge of the upper sheet part, the middle sheet part and the lower sheet part is folded and ultrasonically inosculated to form an annular edge.

9. The PLA fully degradable mask of claim 1 wherein: the inner side of the inner PLA layer is a smooth surface.

10. A PLA fully degradable mask as in any one of claims 1 to 9 wherein: the gram weight of the outer PLA layer is 25-35g/m²(ii) a The gram weight of the inner PLA layer is 25-30g/m²。