CN110143022B - High-moisture-retention elasticity-based wet spunlace mask base cloth and production process thereof - Google Patents
High-moisture-retention elasticity-based wet spunlace mask base cloth and production process thereof Download PDFInfo
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- B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
- B32B23/10—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose next to a fibrous or filamentary layer
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
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- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/06—Patterned fabrics or articles
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/10—Open-work fabrics
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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- B32B2262/0261—Polyamide fibres
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/04—Cellulosic plastic fibres, e.g. rayon
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
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Abstract
The invention discloses a high-moisture-retention elastic-base wet spunlace mask base cloth which sequentially comprises an elastic base cloth lining layer, a high-moisture-retention diffusion layer and a kapok/PP absorption and release control layer from bottom to top; the elastic base cloth lining layer is characterized in that nylon filaments are woven into the elastic base cloth lining by a warp knitting method, the high-moisture-retention diffusion layer is composed of wood pulp/viscose, the kapok/PP absorption and release control layer is composed of kapok/PP, kapok fibers are subjected to preliminary dewaxing treatment and then are uniformly mixed with PP fibers, wet-laid webs are laid on the high-moisture-retention diffusion layer, the elastic base cloth lining layer, the high-moisture-retention diffusion layer and the kapok/PP absorption and release control layer are taken as a whole, 3-5 times of spunlace reinforcement are carried out on the whole, and finally, the reinforced mask base cloth is subjected to drying treatment by a drying cylinder and hot air combined process; the invention improves the stretching elasticity of the mask base cloth and ensures the skin attachment of the material; the liquid carrying rate is improved, and the moisturizing capability of the mask is enhanced; has natural antibacterial function.
Description
Technical Field
The invention relates to the field of medical cosmetology, in particular to high-moisturizing elasticity-based wet spunlace mask base cloth and a production process thereof.
Background
With the development of the beauty industry, the mask product becomes a necessity of the life of people and is strongly sought after by people. In 2017, the total retail amount of the facial mask market in China reaches 191 hundred million yuan, the increase is more than 10 percent on a same scale, and facial mask products account for 10 percent of the market share of skin care products. It is expected that in 2022, the retail market size of facial masks in China will exceed 300 billion yuan. Meanwhile, the people who really use the facial mask are about 4 hundred million women in the age of 18-50 in China, so that the development of the facial mask industry presents huge market advantages. However, it has to be noted that the overseas daily chemists such as Baojie and Unihua still occupy an important share of the whole mask market, so the market of the independent brands in China is strongly promoted.
At present, terylene spunlace nonwoven materials are generally used as carriers of facial mask base cloth, but the terylene spunlace nonwoven materials have the problems of poor skin-friendly property, heavy environmental pollution, low nutrient solution transfer rate, small elasticity, difficulty in fitting facial contours and the like in the actual use process, and high-quality facial mask base materials overcome the external influence factors, are often expensive and cannot be borne by people. Therefore, the important significance is achieved in researching a mask base material which is low in cost, excellent in performance, good in elasticity and small in pollution.
Disclosure of Invention
The purpose of the invention is as follows: the liquid carrying rate of the mask base cloth is improved, the tensile elasticity and the pasting property of the mask base cloth are enhanced, the absorption and release control of water guiding during normal time locking and use and natural antibacterial and antibacterial functions are realized, and meanwhile, the high-moisture-retention elasticity base wet spunlace mask base cloth and the production process thereof are provided.
The technical scheme is as follows: the high-moisture-retention elastic-base wet spunlace mask base cloth comprises an elastic base cloth lining layer, a high-moisture-retention diffusion layer and a kapok/PP absorption and release control layer from bottom to top in sequence.
Preferably, the nylon elastic base cloth lining layer is prepared from nylon filaments with the fineness of 10-30D by a warp knitting method.
Preferably, the warp knitting structure of the nylon elastic base fabric lining layer is a hexagonal mesh structure or a tetragonal mesh structure.
Preferably, the surface density of the nylon elastic base cloth lining layer is 10-20g/m2。
Preferably, the lining layer of the nylon elastic base fabric is made of one of polypropylene filament yarns, polyester filament yarns and tencel filament yarns.
Preferably, in the wood pulp/viscose high-moisture-retention diffused layer, the viscose fiber is 4-12mm in length and 1.5-2D in fineness, and the wood pulp fiber is softwood pulp.
Preferably, in the wood pulp/viscose high-moisture-retention diffusion layer, the mass fraction of wood pulp fibers is 10-20%, the mass fraction of viscose fibers is 80-90%, and the surface density of the prepared high-moisture-retention diffusion layer is 20-25g/m2。
Preferably, the viscose fiber in the wood pulp/viscose high moisture retention saturated layer can also be one or more of chitosan fiber, alginate fiber and tencel fiber.
Preferably, the kapok/PP absorption and release control layer has the length of the kapok fiber and the PP fiber being 8-12mm, the fineness of the kapok fiber being 0.8-1.5D and the fineness of the PP fiber being 1.5-2D.
Preferably, in the kapok/PP absorption and release control layer, the mass fraction of the kapok fiber is 30-60%, the mass fraction of the PP fiber is 40-70%, and the density of the prepared kapok/PP absorption and release control layer surface is 10-20g/m2。
A production process of a high-moisture-retention elastic-base wet spunlace facial mask base cloth comprises the steps of weaving nylon filaments into an elastic base cloth lining by a warp knitting method, then uniformly paving a wood pulp/viscose high-moisture-retention diffusion layer on the nylon elastic base cloth lining, then paving a kapok/PP absorption and release control layer on the high-moisture-retention diffusion layer in a wet-laid mode, and finally integrally reinforcing the three layers in a wet spunlace mode, wherein the surface density of the prepared facial mask base cloth is 30-60 g/m2The method comprises the following specific steps:
(1) the nylon filament is prepared into the product with the surface density of 10-20g/m by a warp knitting method2The elastic base cloth lining layer is characterized in that the warp knitting tissue is a warp knitting pattern tissue and can be a hexagonal mesh or a quadrangular mesh structure;
the hexagonal mesh structure was woven on a two bar warp knitting machine. The front and rear guide bars are in full penetration state. When in weaving, 3 row chaining is firstly woven by a fully-penetrated front guide bar, then the front guide bar is transversely moved to an adjacent knitting needle to weave 3 row chaining, the next circulation returns to the original knitting needle to weave, the first two of the three chaining forms are open loops, and the last one is a closed loop. In the process of weaving each row of knitted chains, the fully-penetrated back guide bar sequentially and synchronously completes local weft insertion and yarn laying, after three rows in one unit are completed, the back guide bar and the front guide bar are moved to adjacent longitudinal rows together, synchronous local weft insertion and yarn laying are continuously completed, and finally, the back guide bar and the front guide bar return to the initial longitudinal row together, and the process is repeated; the number of the warp knitting machine is 38E-44E, the machine density corresponds to the number of the warp knitting machine, the threading mode is full threading, the ratio of horizontal rows to vertical rows is 3:1, the speed of the setting machine is 40-50m/min, and overfeeding is 4-5%. The process flow is that the raw material → warping → warp knitting → inspection → sizing and finishing → cloth inspection and packaging;
(2) uniformly mixing 10-20% of wood pulp fiber and 80-90% of viscose fiber to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and forming a wood pulp/viscose high-moisture-retention diffused layer by using an inclined net to form a net;
adding needle-leaved wood pulp into a pulping tank in sequence of single pieces, synchronously injecting water, quickly absorbing water by the wood pulp, dispersing into small blocks under the action of water flow shearing force of high-speed stirring of a pulping impeller, and further dispersing into precipitated fibrous fibers by mutual collision and friction among fiber blocks; the stirring frequency of the pulping blades is changed along with the pulp dispersion state, the change range is controlled within 80 percent of the output power, the too high speed indicates that the concentration in the pulping tank is too high, the water inlet speed needs to be increased, and the too low speed indicates that the water inlet speed needs to be reduced; the pulping time is controlled to be 6-8 minutes according to the process; sending the wood pulp into a pulp mixing tank, uniformly mixing the wood pulp with the viscose, and then conveying the mixture to a balancing tank. Inputting the pulp into an isobaric tank through a metering pump by a balance tank, conveying the pulp into an inclined wire forming system under the action of an upper pulp pump, and pre-needling output wet paper sheets to form a wood pulp/viscose high-moisture-retention diffused layer;
(3) uniformly mixing 30-60% of kapok fiber by mass and 40-70% of PP fiber by mass to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and using an inclined net to make a net to obtain a kapok/PP absorption and release control layer;
adding kapok fiber and PP fiber into a mixing tank in proportion, synchronously injecting water, starting a stirrer to uniformly mix the fibers, adjusting the fiber concentration in the mixing tank to be 1-3%, and then conveying the fibers to a balance tank. Inputting the solution into an isobaric tank through a metering pump by a balance tank, wherein the concentration of the solution is 0.1-0.3%, feeding the solution into an inclined net forming system under the action of a sizing pump, and outputting wet paper sheets to form a kapok/PP absorbing and releasing control layer through pre-needling;
(4) the kapok/PP absorbing and releasing control layer is output from the upper layer, the wood pulp/viscose high-moisture-retention diffusion layer is output from the lower layer, and the wood pulp/viscose high-moisture-retention diffusion layer is directly and compositely paved on the nylon elastic base cloth lining layer;
(5) adopting a spunlace process to reinforce the kapok/PP absorbing and releasing control layer, the wood pulp/viscose high-moisture-retention diffusion layer and the nylon elastic base cloth lining layer:
the spunlace process is that high-pressure water passes through a water spray plate to form high-pressure water needles, the fiber web is intensively sprayed to enable fibers in the fiber web to generate displacement and entanglement phenomena, the spunlace pressure is 15-80MPa, a kapok/PP absorption and release control layer, a high-moisture-retention and diffusion layer and a nylon elastic base fabric lining layer enter a lapping curtain as a whole and enter a flat-net spunlace area along with the movement of the lapping curtain, in the flat-net spunlace reinforcement process, the fiber web is vertical to the water needles, the spunlace pressure is 30-80MPa, and the number of spunlace tracks can be 1-3; when entering a spunlace area of the rotary drum, the fiber web is tightly attached to the rotary drum, the outer layer of the fiber web is loose, the spunlace effect is good, the inner layer is compressed and contracted, the fiber entanglement is facilitated, finally, the spunlace base fabric is led away from the curved surface of the rotary drum, and the excess water is removed through negative pressure suction and mangle roller pressing;
(6) drying the base cloth by adopting hot air and a drying cylinder:
drying is carried out by adopting a drying cylinder and hot air in a combined mode, wherein the drying cylinder is used for drying, the fiber web bypasses the surface of the drying cylinder, the moisture in the fiber web is evaporated by utilizing the surface heat of the drying cylinder to achieve the drying effect, the temperature of the drying cylinder is 70-130 ℃, the drying time of the drying cylinder is 10-20s, the hot air drying is that the moisture in the fiber web is evaporated by utilizing the hot air penetrating through the fiber web on drying equipment to achieve the drying effect, the temperature of the hot air drying oven is 70-100 ℃, and the hot air drying time is 10-20 s.
Has the advantages that: the invention takes the environmental protection as the principle, and aims to improve the liquid carrying rate of the mask base cloth, enhance the tensile elasticity and the pasting property of the mask base cloth, realize the normal water locking, the suction and release control of water guiding during use and the natural antibacterial and bacteriostatic functions, the selected raw materials mainly comprise degradable fibers, and the non-woven process is combined with spunlace reinforcement, so that the phenomena of large energy consumption, more wastes and heavy pollution in the traditional process are effectively reduced; the warp-knitted nylon elastic base cloth liner improves the stretching elasticity of the mask base cloth and ensures the skin adhesiveness of the material; the wood pulp/viscose high-moisture-retention diffusion layer can effectively improve the liquid carrying rate of the mask base cloth and enhance the moisture retention capacity of the mask product during use; the kapok/PP absorbing and releasing control layer realizes special functions of normally locking water, guiding water in use and naturally inhibiting bacteria and resisting bacteria by virtue of high hollowness and siphon effect of the kapok/PP absorbing and releasing control layer.
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FIG. 1 is a structural cross-sectional view of the present invention;
1. kapok/PP absorbs and releases control layer 2, wood pulp/viscose high moisture retention and saturates layer 3, nylon elasticity base cloth lining.
Detailed Description
The high-moisturizing elasticity-based wet spunlace mask base cloth is composed of an upper layer, a middle layer and a lower layer, wherein the upper layer is a kapok/PP absorption and release control layer 1, the middle layer is a high-moisturizing diffusion layer 2 composed of wood pulp/viscose, and the lower layer is a nylon elasticity-based cloth lining layer 3.
In the example, in the kapok/PP absorption and release control layer 1, the mass fraction of the kapok fiber is 30-60%, the mass fraction of the PP fiber is 40-70%, and the density of the obtained kapok/PP absorption and release control layer surface is 10-20g/m2；
In the example, the kapok/PP absorption and release control layer 1 has the length of kapok fiber and PP fiber of 8-12mm, the fineness of the kapok fiber of 0.8-1.5D and the fineness of the PP fiber of 1.5-2D;
in the embodiment, in the wood pulp/viscose high moisture retention diffusion layer 2, the length of viscose fiber is 4-12mm, the fineness is 1.5-2D, and the wood pulp fiber is softwood pulp;
in the embodiment, in the wood pulp/viscose high-moisture-retention diffusion layer 2, the mass fraction of wood pulp fibers is 10-20%, and the mass fraction of viscose fibers is80-90%, and the surface density of the prepared high-moisture-retention diffusion layer is 20-25g/m2；
In this example, the viscose fiber in the wood pulp/viscose high moisture retention diffused layer 2 may also be one or more of chitosan fiber, alginate fiber and tencel fiber;
in the embodiment, the nylon elastic base cloth lining layer 3 is prepared by nylon filaments with the fineness of 10-30D by a warp knitting method;
in this example, the warp knitting structure of the nylon stretch base fabric lining layer 3 is a hexagonal mesh structure or a tetragonal mesh structure.
In the embodiment, the surface density of the nylon elastic base cloth lining layer 3 is 10-20g/m2；
In this example, the nylon filament yarn used as the nylon elastic base fabric lining layer 2 may be one of polypropylene filament yarn, polyester filament yarn and tencel filament yarn.
A production process of a high-moisture-retention elastic-base wet spunlace facial mask base cloth comprises the steps of weaving nylon filaments into an elastic base cloth lining by a warp knitting method, then uniformly paving a wood pulp/viscose high-moisture-retention diffusion layer on the nylon elastic base cloth lining, then paving a kapok/PP absorption and release control layer on the high-moisture-retention diffusion layer in a wet-laid mode, and finally integrally reinforcing the three layers in a wet spunlace mode, wherein the surface density of the prepared facial mask base cloth is 30-60 g/m2The method comprises the following specific steps:
(1) the nylon filament is prepared into the product with the surface density of 10-20g/m by a warp knitting method2The elastic base cloth lining layer is characterized in that the warp knitting tissue is a warp knitting pattern tissue and can be a hexagonal mesh or a quadrangular mesh structure;
the hexagonal mesh structure was woven on a two bar warp knitting machine. The front and rear guide bars are in full penetration state. When in weaving, 3 row chaining is firstly woven by a fully-penetrated front guide bar, then the front guide bar is transversely moved to an adjacent knitting needle to weave 3 row chaining, the next circulation returns to the original knitting needle to weave, the first two of the three chaining forms are open loops, and the last one is a closed loop. And in the weaving process of each row chain, the fully-penetrated back guide bar sequentially and synchronously completes local weft insertion and yarn laying, after three rows in one unit are completed, the back guide bar and the front guide bar are moved to adjacent longitudinal rows together, synchronous local weft insertion and yarn laying are continuously completed, and finally, the back guide bar and the front guide bar return to the initial longitudinal row together, and the process is repeated. The number of the warp knitting machine is 38E-44E, the machine density corresponds to the number of the warp knitting machine, the threading mode is full threading, the ratio of horizontal rows to vertical rows is 3:1, the speed of the setting machine is 40-50m/min, and overfeeding is 4-5%. The process flow is that the raw material → warping → warp knitting → inspection → sizing and finishing → cloth inspection and packaging.
(2) Uniformly mixing 10-20% of wood pulp fiber and 80-90% of viscose fiber to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and forming a wood pulp/viscose high-moisture-retention diffused layer by using an inclined net to form a net;
adding needle-leaved wood pulp into a pulping tank in sequence of single pieces, synchronously injecting water, quickly absorbing water by the wood pulp, dispersing into small blocks under the action of water flow shearing force of high-speed stirring of a pulping impeller, and further dispersing into precipitated fibrous fibers by mutual collision and friction among fiber blocks; the stirring frequency of the pulping blades is changed along with the pulp dispersion state, the change range is controlled within 80 percent of the output power, the too high speed indicates that the concentration in the pulping tank is too high, the water inlet speed needs to be increased, and the too low speed indicates that the water inlet speed needs to be reduced; the pulping time is controlled to be 6-8 minutes according to the process; sending the wood pulp into a pulp mixing tank, uniformly mixing the wood pulp with the viscose, and then conveying the mixture to a balancing tank. The pulp is fed into the isopiestic tank by the balance tank through the metering pump, the pulp is fed into the inclined wire forming system under the action of the sizing pump, and the output wet paper sheets are pre-punched to form a wood pulp/viscose high-moisture-retention diffused layer.
(3) Uniformly mixing 30-60% of kapok fiber by mass and 40-70% of PP fiber by mass to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and using an inclined net to make a net to obtain a kapok/PP absorption and release control layer;
adding kapok fiber and PP fiber into a mixing tank in proportion, synchronously injecting water, starting a stirrer to uniformly mix the fibers, adjusting the fiber concentration in the mixing tank to be 1-3%, and then conveying the fibers to a balance tank. The solution with concentration of 0.1-0.3% is fed into the isobaric tank via metering pump, and fed into inclined net forming system under the action of sizing pump, and the output wet paper sheet is pre-punched to form kapok/PP absorbing and releasing control layer.
(4) The kapok/PP absorbing and releasing control layer 1 is output from the upper layer, the wood pulp/viscose high-moisture-retention diffusion layer 2 is output from the lower layer, and the wood pulp/viscose high-moisture-retention diffusion layer is directly and compositely paved on the nylon elastic base cloth lining layer 3.
(5) Adopting a spunlace process to reinforce the kapok/PP absorbing and releasing control layer, the wood pulp/viscose high-moisture-retention diffusion layer and the nylon elastic base cloth lining layer:
the spunlace process is that high-pressure water passes through a water spray plate to form high-pressure water needles, the fiber web is intensively sprayed to enable fibers in the fiber web to generate displacement and entanglement phenomena, the spunlace pressure is 15-80MPa, a kapok/PP absorption and release control layer, a high-moisture-retention and diffusion layer and a nylon elastic base fabric lining layer enter a lapping curtain as a whole and enter a flat-net spunlace area along with the movement of the lapping curtain, in the flat-net spunlace reinforcement process, the fiber web is vertical to the water needles, the spunlace pressure is 30-80MPa, and the number of spunlace tracks can be 1-3; when entering a spunlace area of the rotary drum, the fiber web is tightly attached to the rotary drum, the outer layer of the fiber web is loose, the spunlace effect is good, the inner layer is compressed and contracted, the fiber entanglement is facilitated, finally, the spunlace base fabric is led away from the curved surface of the rotary drum, and the excess water is removed through negative pressure suction and mangle roller pressing;
(6) drying the base cloth by adopting hot air and a drying cylinder:
drying is carried out by adopting a drying cylinder and hot air in a combined mode, wherein the drying cylinder is used for drying, the fiber web bypasses the surface of the drying cylinder, the moisture in the fiber web is evaporated by utilizing the surface heat of the drying cylinder to achieve the drying effect, the temperature of the drying cylinder is 70-130 ℃, the drying time of the drying cylinder is 10-20s, the hot air drying is that the moisture in the fiber web is evaporated by utilizing the hot air penetrating through the fiber web on drying equipment to achieve the drying effect, the temperature of the hot air drying oven is 70-100 ℃, and the hot air drying time is 10-20 s. The spunlaced elastic-based wet spunlace mask base material is dried by a drying cylinder and hot air in a combined manner, so that the ideal effects of flat surface and fluffy whole body can be achieved.
The preparation method of the high-moisture-retention elastic base wet spunlace mask base cloth comprises the steps of weaving nylon filaments into an elastic base cloth lining by a warp knitting method, then uniformly paving a wood pulp/viscose high-moisture-retention diffusion layer on the nylon elastic base cloth lining, and then enabling wood to be subjected to wet spunlace treatmentThe cotton/PP absorption and release control layer is laid on the high moisture retention diffusion layer in a wet-laid mode, and finally the three layers are integrally reinforced in a wet spunlace mode, and the surface density of the prepared mask base cloth is 30-60 g/m2，
The invention takes environmental protection as the principle of invention, and aims to improve the liquid carrying rate of the mask base cloth, enhance the stretching elasticity and the pasting property of the mask base cloth, realize the water locking at ordinary times, the suction and release control of water guiding during use and the natural antibacterial and bacteriostatic functions, the selected raw materials are mainly degradable fibers, and the non-woven process is combined with spunlace reinforcement, so that the phenomena of large energy consumption, more wastes and heavy pollution in the traditional process are effectively reduced; the warp-knitted nylon elastic base cloth liner improves the stretching elasticity of the mask base cloth and ensures the skin adhesiveness of the material; the wood pulp/viscose high-moisture-retention diffusion layer can effectively improve the liquid carrying rate of the mask base cloth and enhance the moisture retention capacity of the mask product during use; the kapok/PP absorbing and releasing control layer realizes special functions of normally locking water, guiding water in use and naturally inhibiting bacteria and resisting bacteria by virtue of high hollowness and siphon effect of the kapok/PP absorbing and releasing control layer.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The high-moisturizing elasticity-based wet spunlace mask base cloth is characterized in that: the facial mask base cloth comprises a nylon elastic base cloth lining layer, a high-moisture-retention diffusion layer, kapok and a PP absorption and release control layer from bottom to top in sequence; the high-moisture-retention diffusion layer is composed of wood pulp fibers and viscose fibers, the wood pulp is ground into fibriform by special pulping equipment, and then is uniformly mixed with the viscose fibers, and the fibriform is uniform after wet-laidLaid on the nylon elastic base cloth lining, wherein the mass fraction of wood pulp fiber is 10-20%, the mass fraction of viscose fiber is 80-90%, and the surface density of the prepared high-moisture-retention diffusion layer is 20-25g/m2；
The nylon elastic base cloth lining layer is formed by weaving 10-30D nylon filaments into the elastic base cloth lining layer by a warp knitting method, and the surface density of the elastic base cloth lining layer is 10-20g/m2；
The kapok and PP absorption and release control layer consists of kapok fibers and PP fibers, the kapok fibers are subjected to primary dewaxing treatment and then are uniformly mixed with the PP fibers, and the kapok fibers and the PP fibers are laid on the high-moisture-retention diffusion layer in a wet-laid mode, wherein the mass fraction of the kapok fibers is 30-60%, the mass fraction of the PP fibers is 40-70%, the lengths of the kapok fibers and the PP fibers are 8-12mm, the fineness of the kapok fibers is 0.8-1.5D, the fineness of the PP fibers is 1.5-2D, and the density of the prepared kapok and PP absorption and release control layer is 10-20g/m2。
2. The high moisturizing elasticity-based wet spunlace mask base fabric as claimed in claim 1, wherein the high moisturizing elasticity-based wet spunlace mask base fabric is characterized in that: in the high-moisture-retention diffused layer, the length of the viscose fiber is 4-12mm, the fineness is 1.5-2D, and the wood pulp fiber is softwood pulp.
3. The high moisturizing elasticity-based wet spunlace mask base fabric as claimed in claim 1, wherein the high moisturizing elasticity-based wet spunlace mask base fabric is characterized in that: the warp knitting structure of the nylon elastic base cloth lining layer is a hexagonal mesh structure.
4. The high moisturizing elasticity-based wet spunlace mask base fabric as claimed in claim 1, wherein the high moisturizing elasticity-based wet spunlace mask base fabric is characterized in that: the warp knitting structure of the nylon elastic base cloth lining layer is a four-corner mesh structure.
5. A production process of a high-moisture-retention elasticity-based wet spunlace mask base cloth is characterized by comprising the following steps of: firstly, adopting a warp knitting method to knit nylon filaments into an elastic base cloth lining layer, then uniformly laying a wood pulp and viscose high-moisture-retention diffusion layer on the nylon elastic base cloth lining layer, and then laying a kapok and PP absorption and release control layer on the high-moisture-retention diffusion layer in a wet-laid mannerOn the wet-hardening layer, the three layers are integrally reinforced by wet-process spunlace, and the surface density of the prepared mask base cloth is 30-60 g/m2The method comprises the following specific steps:
(1) the nylon filament is prepared into the product with the surface density of 10-20g/m by a warp knitting method2The elastic base cloth lining layer is characterized in that the warp knitting structure is a warp knitting pattern structure and is a hexagonal mesh or a four-corner mesh structure;
(2) uniformly mixing 10-20% of wood pulp fiber by mass and 80-90% of viscose fiber by mass to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and obtaining a wood pulp and viscose high-moisture-retention diffused layer by utilizing an inclined wire papermaking net:
adding needle-leaved wood pulp into a pulping tank in sequence of single pieces, synchronously injecting water, quickly absorbing water by the wood pulp, dispersing into small blocks under the action of water flow shearing force of high-speed stirring of a pulping impeller, and further dispersing into precipitated fibrous fibers by mutual collision and friction among fiber blocks; the stirring frequency of the pulping blades is changed along with the pulp dispersion state, the change range is controlled within 80 percent of the output power, the too high speed indicates that the concentration in the pulping tank is too high, the water inlet speed needs to be increased, and the too low speed indicates that the water inlet speed needs to be reduced; the pulping time is controlled to be 6-8 minutes according to the process; sending the wood pulp into a pulp mixing tank, uniformly mixing the wood pulp with the viscose, and then conveying the mixture to a balancing tank; inputting the pulp into an isobaric tank through a metering pump by a balance tank, feeding the pulp into an inclined net forming system under the action of a pulp feeding pump, and pre-needling output wet paper sheets to form a wood pulp and viscose high-moisture-retention diffused layer;
(3) uniformly mixing 30-60% of kapok fiber by mass and 40-70% of PP fiber by mass to prepare homogeneous mixed pulp, wherein the mass concentration of the mixed pulp is 0.1-0.3%, and obtaining the kapok and PP absorption and release control layer by using an inclined net to make a net:
adding kapok fiber and PP fiber into a mixing tank in proportion, synchronously injecting water, starting a stirrer to uniformly mix the fibers, adjusting the fiber concentration in the mixing tank to be 1-3%, conveying the mixture to a balance tank, conveying the mixture to an isobaric tank through a metering pump from the balance tank, conveying the mixture to an inclined net forming system under the action of a pulp pump, outputting wet paper sheets, and pre-needling the wet paper sheets to form a kapok and PP absorption and release control layer;
(4) the kapok and PP absorbing and releasing control layer is output from the upper layer, the wood pulp and viscose high-moisture-retention diffusion layer is output from the lower layer, and the wood pulp and the viscose high-moisture-retention diffusion layer are directly compounded and paved on the nylon elastic base cloth lining layer;
(5) adopting a spunlace process to reinforce the kapok and PP absorbing and releasing control layer, the wood pulp and viscose high-moisture-retention diffusion layer and the nylon elastic base cloth lining layer:
the spunlace process is that high-pressure water passes through a water spray plate to form high-pressure water needles, the fiber web is intensively sprayed to enable fibers in the fiber web to generate displacement and entanglement phenomena, the spunlace pressure is 15-80MPa, the kapok and PP absorption and release control layer, the high-moisture-retention and diffusion layer and the nylon elastic base fabric lining layer enter a lapping curtain as a whole and enter a flat-net spunlace area along with the movement of the lapping curtain, in the flat-net spunlace reinforcement process, the fiber web is vertical to the water needles, the spunlace pressure is 30-80MPa, and the number of spunlace tracks is 1-3; when entering a spunlace area of the rotary drum, the fiber web is tightly attached to the rotary drum, the outer layer of the fiber web is loose, the spunlace effect is good, the inner layer is compressed and contracted, the fiber entanglement is facilitated, finally, the spunlace base fabric is led away from the curved surface of the rotary drum, and the excess water is removed through negative pressure suction and mangle roller pressing;
(6) drying the base cloth by adopting hot air and a drying cylinder:
drying is carried out by adopting a drying cylinder and hot air in a combined mode, wherein the drying cylinder is used for drying, the fiber web bypasses the surface of the drying cylinder, the moisture in the fiber web is evaporated by utilizing the surface heat of the drying cylinder to achieve the drying effect, the temperature of the drying cylinder is 70-130 ℃, the drying time of the drying cylinder is 10-20s, the hot air drying is that the moisture in the fiber web is evaporated by utilizing the hot air penetrating through the fiber web on drying equipment to achieve the drying effect, the temperature of the hot air drying oven is 70-100 ℃, and the hot air drying time is 10-20 s.
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| CN110983855A (en) * | 2019-12-20 | 2020-04-10 | 江苏金三发卫生材料科技有限公司 | Novel flushable composite process material and production method thereof |
| CN113718548A (en) * | 2021-09-15 | 2021-11-30 | 优奈实业(上海)有限公司 | Preparation method of dispersible non-woven fabric and dispersible non-woven fabric |
| CN114619722A (en) * | 2022-03-15 | 2022-06-14 | 南通大学 | Absorbent pad for food preservation based on kapok fiber |
| CN115154333A (en) * | 2022-08-22 | 2022-10-11 | 常熟立仁新型材料有限公司 | Preparation method of skin-friendly multilayer composite elastic extensible mask cloth |
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