CN212185219U

CN212185219U - Removable folding gauze mask of filter core

Info

Publication number: CN212185219U
Application number: CN202020259893.2U
Authority: CN
Inventors: 冯建龙
Original assignee: Guangdong Kangcheng New Material Science And Technology Co ltd
Current assignee: Guangdong Kangcheng New Material Science And Technology Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-12-22
Anticipated expiration: 2030-03-05

Abstract

The utility model relates to a gauze mask, concretely relates to removable folding gauze mask of filter core, the rain cape comprises a cover body, the both sides of the cover body are equipped with the ear-hang, the cover body comprises outer surface fabric and inlayer surface fabric, the edge of inlayer surface fabric and the edge of outer surface fabric are sewed up, be equipped with the filter core between outer surface fabric and the inlayer surface fabric, the dismantlement mouth has been seted up to the inlayer surface fabric, the cover body all is provided with the crease with the filter core on the axis with crossing. The utility model discloses cross the filter core and get through dismantling the mouth and put to the realization can be changed the function of crossing the filter core, therefore can reach the purpose of practicing thrift the space and facilitating the use through saving cover body quantity, therefore the cover body all is provided with the crease with crossing the filter core on the axis, therefore the gauze mask is whole can be folded, therefore the usage space is more efficient, and it is more convenient to carry, furtherly, the crease of the cover body forms through inside beta structure, therefore under natural state, the cover body also tends to inwards fold, with the laminating of human face pitch arc.

Description

Removable folding gauze mask of filter core

Technical Field

The utility model relates to a gauze mask, concretely relates to removable folding gauze mask of filter core.

Background

The mask is a sanitary article, generally refers to a device which is worn at the mouth and nose part and used for filtering air entering the mouth and nose so as to prevent harmful gas, smell and spray from entering and exiting the mouth and nose of a wearer, and is made of gauze or paper and the like. The mask has a certain filtering function on air entering the lung, and has a very good effect when being worn in respiratory infectious diseases and working in environments polluted by dust and the like.

The common mask is mostly of a plane type, and the plane type mask has the following defects: 1. the melt-blown cloth with the filtering function is fixed and cannot be replaced; 2. the mask is unfolded in a plane mode, and the required placing area is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a folding gauze mask that filter core is removable, easily deposit to the above-mentioned not enough among the prior art

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a removable folding gauze mask of filter core, includes the cover body, the both sides of cover body are equipped with the ear-hang, the cover body comprises outer surface fabric and inlayer surface fabric, the edge of inlayer surface fabric is sewed up with the edge of outer surface fabric, be equipped with between outer surface fabric and the inlayer surface fabric and filter the core, the dismantlement mouth has been seted up to the inlayer surface fabric, the cover body all is provided with the crease with filtering the core on the axis.

The utility model discloses cross the filter core and get through dismantling the mouth and put to the realization can be changed the function of crossing the filter core, therefore can reach the purpose of practicing thrift the space and facilitating the use through saving cover body quantity, therefore the cover body all is provided with the crease with crossing the filter core on the axis, therefore the gauze mask is whole can be folded, therefore the usage space is more efficient, and it is more convenient to carry, furtherly, the crease of the cover body forms through inside beta structure, therefore under natural state, the cover body also tends to inwards fold, with the laminating of human face pitch arc.

The filter element comprises a first non-woven fabric, a melt-blown fabric and a second non-woven fabric which are sewn together, wherein the melt-blown fabric is arranged between the first non-woven fabric and the second non-woven fabric.

The melt-blown cloth takes polypropylene as a main raw material, the fiber diameter can reach 0.5-10 microns, the superfine fibers with unique capillary structures increase the number and the surface area of fibers in unit area, so that the melt-blown cloth has good air filtration performance, the protection level of the mask can be adjusted by using the melt-blown cloth with different specifications, for example, masks with the levels of N95, KN90, KN99 and the like are formed, and users can purchase filter cores with different specifications at the same time, and the filter cores are used according to the use environment and the cost.

Wherein the outer layer fabric is ice silk cotton.

The mercerized cotton is made into high-quality mercerized yarn through worsted spinning, and then through special processing procedures such as singeing and mercerizing, the high-quality mercerized yarn which is smooth, bright, soft and anti-wrinkle is made, the excellent natural characteristics of the raw cotton are completely reserved, and the mercerized yarn has general luster of silk, soft hand feeling of fabrics and better comfort level.

The ear hook and the outer layer fabric are integrally formed, and a circular through hole or an oval through hole is formed between the ear hook and the outer layer fabric.

Different from general rope dress ear-hang, the utility model discloses an ear-hang sets up the circular through-hole or the oval through-hole of both sides and forms in equivalent to the surface fabric at integrated into one piece, and the ear-hang thickness broad that this kind of mode formed, the elasticity is better, can laminate the ear well, also causes littleer pressure to the ear to the laminating leakproofness of gauze mask is also high.

Wherein, the upper edge of the mask body is provided with a nose bridge strip.

Wherein, the inner layer fabric is a moisture-conducting fabric layer. In the mask wearing process, a user can sneeze independently to cause the inner fabric to be wet and uncomfortable, particularly, the mask cannot be taken off easily even if the user is uncomfortable in an epidemic situation, the user cannot carry with the mask for standby, and therefore the inner fabric can be set to be the fabric with the moisture guide function, moisture can be guided rapidly, dryness can be achieved rapidly, and discomfort caused by damp heat can be eliminated.

Polyester fiber is one of three main fibers in synthetic fiber, and is widely applied to garment materials and other non-garment fields due to excellent physical and chemical properties, and polyester products are used as main textile raw materials to be woven into various textiles by downstream users due to good drapability and high strength since the advent. But has been limited in its application to fields requiring high hygroscopicity or water absorption due to its hydrophobic property. The reason is that the molecular structure of the common polyester fiber lacks hydrophilic groups, the molecular chain is rigid, the packing is tight, the crystallinity is higher, the water absorption capacity is poor, and the functions of water absorption and sweat removal are not realized.

For mask fabric, terylene can only conduct liquid water through capillary action, but unlike common moisture absorption quick-drying fabric, the mask can be used as an outer layer to evaporate water by matching with hydrophilic fiber, and due to the requirement of filterability, the inner layer fabric is difficult to arrange an effective fiber layer as an evaporation surface, so that the hydrophilic fiber layer is directly compounded with the inner layer fabric, the moisture retention is easy for a long time, and the growth of bacteria is easy to promote after the moisture conductivity is poor. Therefore, the utility model discloses at the inlayer of filter core, second non-woven fabrics layer continues compound one deck hydrophilic fiber layer promptly, for example the hollow cotton layer, though compare and lead wet surface fabric layer and directly weave, the area of contact of hydrophilic fiber layer and lead wet surface fabric layer is littleer, but moisture can be absorbed to the filter core of being changed in, and through the wicking ability of strengthening leading wet surface fabric layer, also can compensate the defect that area of contact is little to reach the purpose of rapid-curing cutback.

Further, the moisture-conducting fabric layer is formed by weaving modified hollow polyester yarns, and the modified hollow polyester yarns are prepared by the following method:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.2-1.4:1, heating to 80-90 ℃, and then carrying out heat preservation reaction for 2-4h to obtain a polyurethane polymer;

(2) dissolving the polyurethane polymer in N, N-dimethylacetamide, and adding a chain extender for chain extension reaction to obtain a spinning solution;

(3) carrying out electrostatic spraying on the spinning solution to obtain polyurethane particles;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:7-9, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Different from the preparation of common hollow polyester yarns, the utility model adds the polyurethane particles in the polyester chips, the polyurethane particles are melted again in the melting spinning process, filling points with different shapes can be formed in the polyester fibers after the spinning is cooled, and the bonding property with the polyester fibers is good; the addition of the polyurethane particles can improve the hydrophilicity of the polyester fibers to a certain extent, so that the polyester fibers are easier to be soaked, and therefore, the polyester fibers can absorb moisture more quickly for transmission, but the hydrophilicity is not too strong, so that the transmission of the moisture from the polyester fibers to the hollow cotton is influenced; in addition, utility model people still discovers, modifies through adding the polyurethane particle in the dacron section, can effectively improve dacron fiber's well hollowness, further improves dacron fiber's wet function of leading, gives its super wicking, under the less condition of absorptive water yield, still can reach the effect of rapid-curing cutback, improves the comfort level of gauze mask.

Wherein, in the step (2), the weight ratio of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender is 1:8-10: 0.1-0.3.

By controlling the dosage proportion of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender, the molecular weight of the polyurethane polymer and the viscosity of a spinning solution can be improved, and the polyurethane can be cured and molded in the electrostatic spraying process.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to the weight ratio of 2-3:1, the temperature of the chain extension reaction is 30-50 ℃, and the time is 0.5-1 h.

The compound chain extender selected by the utility model is matched with proper chain extension reaction conditions, the length of the polyurethane molecular chain can be properly prolonged, the obtained polyurethane particles are in the melting process of the polyester chips, and because the polyurethane has longer molecular chains, filling points with different shapes are more easily formed, and the polyurethane particles can stably exist in the polyester fibers; meanwhile, as the difference of the interface performance of the polyurethane and the polyester fiber is large, more gaps can be formed between the polyurethane and the polyester fiber, and the phenomenon of improving the hollowness of the modified polyester is also caused.

In the step (3), the specific operation of electrostatic spraying is as follows: adding the spinning solution into an electrostatic spraying injector, wherein the needle of the electrostatic spraying injector is set to have a voltage of 18-25kV, the injection speed is controlled to be 0.5-0.9mL/h, and the receiving distance is controlled to be 20-25 cm.

By controlling the electrostatic spraying condition, the solvent is evaporated with proper efficiency to form polyurethane particles with smaller particle size, the particle size can be controlled between 1 and 20 mu m, which is beneficial to improving the dispersibility of the polyurethane particles in the polyester fiber, maintaining the stability of fiber tissues and leading the polyurethane particles to have better mechanical properties.

Wherein, in the step (4), the melt spinning adopts a C-shaped spinneret plate for spinning, the temperature of the melt spinning is 260-300 ℃, the spinning speed is 2700-3000m/min, the cooling temperature is 20-25 ℃, and the drawing multiple is 3.0-3.4 times.

The spinning process of the hollow polyester yarn is controlled, so that the modified hollow polyester yarn meeting the requirements can be formed, namely, the modified hollow polyester yarn has certain hydrophilicity and higher hollowness, and the moisture conductivity is more obvious.

The utility model has the advantages that: 1. the filter element can be replaced, and the purposes of saving space and facilitating use can be achieved by saving the number of the cover bodies; 2. the cover body and the filter element are provided with creases on the central axis, so that the whole mask can be folded, the use space is more efficient, and the mask is more convenient to carry.

Drawings

The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a partial cross-sectional view of the present invention;

the reference numerals include: 1-cover body, 11-outer layer fabric, 12-inner layer fabric, 2-ear hook, 3-filter element, 31-first non-woven fabric, 32-melt-blown fabric, 33-second non-woven fabric 33, and 4-disassembly opening.

Detailed Description

The invention will be further described with reference to the following examples.

Example 1

The utility model provides a removable folding gauze mask of filter core, includes the cover body 1, the both sides of cover body 1 are equipped with ear-hang 2, cover body 1 comprises outer surface fabric 11 and inlayer surface fabric 12, the edge of inlayer surface fabric 12 is sewed up with the edge of outer surface fabric 11, be equipped with between outer surface fabric 11 and the inlayer surface fabric 12 and filter core 3, dismantlement mouth 4 has been seted up to inlayer surface fabric 12, cover body 1 and filter core 3 all are provided with the crease on the axis.

The filter element 3 comprises a first nonwoven fabric 31, a meltblown fabric 32 and a second nonwoven fabric 33, which are sewn together, wherein the meltblown fabric 32 is disposed between the first nonwoven fabric 31 and the second nonwoven fabric 33.

Wherein the outer layer fabric 11 is ice silk cotton.

The ear hook 2 and the outer layer fabric 11 are integrally formed, and a circular through hole is formed between the ear hook 2 and the outer layer fabric 11.

Wherein, the upper edge of the mask body 1 is provided with a nose bridge strip.

Wherein the inner layer fabric 12 is a moisture-conducting fabric layer.

Example 2

This example differs from example 1 in that:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.3:1, heating to 85 ℃, and then carrying out heat preservation reaction for 3 hours to obtain a polyurethane polymer;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:8, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Wherein, in the step (2), the weight ratio of the polyurethane polymer to the N, N-dimethylacetamide to the chain extender is 1:9: 0.2.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to the weight ratio of 2.5:1, the temperature of the chain extension reaction is 40 ℃, and the time is 0.75 h.

In the step (3), the specific operation of electrostatic spraying is as follows: the spinning solution was charged into an electrostatic spray syringe having a needle set at a voltage of 21kV, an injection speed controlled at 0.7mL/h, and a receiving distance controlled at 22 cm.

In the step (4), the melt spinning is carried out by adopting a C-shaped spinneret plate, the melt spinning temperature is 280 ℃, the spinning speed is 2800m/min, the cooling temperature is 23 ℃, and the drawing multiple is 3.2 times.

Example 3

This example differs from example 2 in that:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.2:1, heating to 80 ℃, and then carrying out heat preservation reaction for 2 hours to obtain a polyurethane polymer;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:7, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Wherein, in the step (2), the weight ratio of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender is 1:8: 0.1.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to a weight ratio of 2:1, the temperature of the chain extension reaction is 30 ℃, and the time is 0.5 h.

In the step (3), the specific operation of electrostatic spraying is as follows: the spinning solution was charged into an electrostatic spray injector having a needle set at a voltage of 18kV, an injection speed controlled at 0.5mL/h, and a receiving distance controlled at 20 cm.

In the step (4), the melt spinning is carried out by adopting a C-shaped spinneret plate, the temperature of the melt spinning is 260 ℃, the spinning speed is 2700m/min, the cooling temperature is 20 ℃, and the drawing multiple is 3.0 times.

Example 4

This example differs from example 2 in that:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.4:1, heating to 90 ℃, and then carrying out heat preservation reaction for 4 hours to obtain a polyurethane polymer;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:9, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Wherein, in the step (2), the weight ratio of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender is 1:10: 0.3.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to a weight ratio of 3:1, the temperature of the chain extension reaction is 50 ℃, and the time is 1 h.

In the step (3), the specific operation of electrostatic spraying is as follows: the spinning solution was charged into an electrostatic spray injector having a needle set at a voltage of 25kV, an injection speed controlled at 0.9mL/h, and a receiving distance controlled at 25 cm.

In the step (4), the melt spinning is carried out by adopting a C-shaped spinneret plate, the melt spinning temperature is 300 ℃, the spinning speed is 3000m/min, the cooling temperature is 25 ℃, and the drawing multiple is 3.4 times.

Example 5

This example differs from example 2 in that:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.3:1, heating to 83 ℃, and then carrying out heat preservation reaction for 2.5 hours to obtain a polyurethane polymer;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:7.5, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Wherein, in the step (2), the weight ratio of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender is 1:8: 0.2.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to the weight ratio of 2.2:1, the temperature of the chain extension reaction is 35 ℃, and the time is 0.6 h.

In the step (3), the specific operation of electrostatic spraying is as follows: the spinning solution was charged into an electrostatic spray injector having a needle set at a voltage of 120kV, an injection speed controlled at 0.6mL/h, and a receiving distance controlled at 21 cm.

In the step (4), the melt spinning is carried out by adopting a C-shaped spinneret plate, the melt spinning temperature is 270 ℃, the spinning speed is 2800m/min, the cooling temperature is 22 ℃, and the drawing multiple is 3.1 times.

Example 6

This example differs from example 2 in that:

(1) mixing polytetramethylene ether glycol and 4, 4' -diphenylmethane diisocyanate according to the molar ratio of 1.3:1, heating to 87 ℃, and then carrying out heat preservation reaction for 3.5 hours to obtain a polyurethane polymer;

(4) and mixing the polyurethane particles and the polyester chips according to the proportion of 1:8.5, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Wherein, in the step (2), the weight ratio of the polyurethane polymer, the N, N-dimethylacetamide and the chain extender is 1:10: 0.1.

In the step (2), the chain extender is composed of triethanolamine and p-hydroquinone-bis (beta-hydroxyethyl) ether according to the weight ratio of 2.7:1, the temperature of the chain extension reaction is 45 ℃, and the time is 0.8 h.

In the step (3), the specific operation of electrostatic spraying is as follows: the spinning solution was added to an electrostatic spray injector having a needle set at a voltage of 22kV, an injection speed of 0.5 to 0.9mL/h, and a receiving distance of 23 cm.

In the step (4), the melt spinning is carried out by adopting a C-shaped spinneret plate, the melt spinning temperature is 290 ℃, the spinning speed is 2900m/min, the cooling temperature is 24 ℃, and the drawing multiple is 3.3 times.

Comparative example 1

This comparative example differs from example 2 in that:

and mixing the polyester chips according to the proportion of 1:8, and then carrying out melt spinning, cooling, bundling and drafting to obtain the modified hollow polyester yarn.

Comparative example 2

This comparative example differs from example 2 in that:

the chain extender is triethanolamine.

Comparative example 3

This comparative example differs from example 2 in that:

the chain extender is p-hydroquinone-bis (beta-hydroxyethyl) ether.

Comparative example 4

The present comparative example differs from comparative example 2 in that:

the modified hollow polyester yarn and the hollow cotton yarn of example 2 were woven into a moisture-wicking fabric layer, with the modified hollow polyester yarn as the inner layer and the hollow cotton yarn as the outer layer.

The wicking height and wicking rate were measured by the vertical wicking method of GBT21655.1-2008 for the moisture-wicking fabric layers of examples 2-6 and comparative examples 1-4, and the drip diffusion time and the drip diffusion area were measured by the water drop method of GBT21655.1-2008 for the moisture-wicking fabric layers of examples 2-6 and comparative examples 1-3 by placing a hollow cotton layer on the bottom surface thereof, and the results were as follows:

	wicking height (cm)	Wicking Rate	Drip spread time(s)	Diffusion area (cm)²)
					Example 2	8.3	3.31	5.1	11.21
Example 3	8.0	3.16	5.9	10.28
					Example 4	7.8	2.98	6.0	9.63
Example 5	7.5	2.83	6.5	8.84
					Example 6	7.7	2.92	6.3	9.11
Comparative example 1	5.4	2.71	7.6	7.52
					Comparative example 2	6.7	2.84	7.0	8.29
Comparative example 3	6.6	2.80	7.1	8.35
					Comparative example 4	11.2	4.26	3.0	18.38

As can be seen from the comparison between the example 2 and the comparative example 1, the moisture-conducting performance of the hollow polyester yarns can be effectively improved by the polyurethane particles participating in the polyester spinning, so that the hollow polyester yarns have a stronger wicking effect, the effects of moisture conducting and quick drying are achieved, and the applicability of the mask is improved; as can be seen from the comparison of the embodiment 2, the comparative example 2 and the comparative example 3, the selection of the chain extender also has great influence on the moisture permeability of the modified hollow polyester yarn, and the compound chain extender of the utility model can more remarkably improve the moisture permeability; as can be seen from the comparison between example 2 and comparative example 4, although the moisture-transmitting fabric woven by two layers can have more remarkable moisture-transmitting performance, it is more appropriate to laminate a single layer of the moisture-transmitting fabric with the hollow cotton layer of the filter element 3 based on the usage requirement of the mask, and it also has better moisture-transmitting performance.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a removable folding gauze mask of filter core which characterized in that: the mask comprises a mask body, wherein ear hooks are arranged on two sides of the mask body, the mask body is composed of an outer layer fabric and an inner layer fabric, the edge of the inner layer fabric and the edge of the outer layer fabric are sewn, a filter element is arranged between the outer layer fabric and the inner layer fabric, a disassembly opening is formed in the inner layer fabric, and creases are formed in the mask body and the filter element on a central axis.

2. The pleated cover of claim 1, wherein the filter element is replaceable, and the mouthpiece comprises: the filter core comprises a first non-woven fabric, a melt-blown fabric and a second non-woven fabric which are sewn together, wherein the melt-blown fabric is arranged between the first non-woven fabric and the second non-woven fabric.

3. The pleated cover of claim 1, wherein the filter element is replaceable, and the mouthpiece comprises: the outer layer fabric is ice silk cotton.

4. The pleated cover of claim 2, wherein the filter element is replaceable, and the mouthpiece comprises: the ear hook and the outer layer fabric are integrally formed, and a circular through hole is formed between the ear hook and the outer layer fabric.

5. The pleated cover of claim 1, wherein the filter element is replaceable, and the mouthpiece comprises: the upper edge of the cover body is provided with a nose bridge strip.

6. The pleated cover of claim 1, wherein the filter element is replaceable, and the mouthpiece comprises: the inner layer fabric is a moisture-conducting fabric layer.