CN110685070A - Multilayer viscose fiber composite spunlace mask base cloth and viscose fiber composite mask - Google Patents
Multilayer viscose fiber composite spunlace mask base cloth and viscose fiber composite mask Download PDFInfo
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- CN110685070A CN110685070A CN201910985994.XA CN201910985994A CN110685070A CN 110685070 A CN110685070 A CN 110685070A CN 201910985994 A CN201910985994 A CN 201910985994A CN 110685070 A CN110685070 A CN 110685070A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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Abstract
The invention relates to a multilayer viscose fiber composite spunlace mask base cloth and a viscose fiber composite mask, wherein the mask base cloth is prepared by the following method: 1) cutting raw ramie into small sections, and soaking in water to obtain softened material; 2) performing steam explosion on the softening material to obtain an explosion mixture; 3) placing the blasting mixture in water, and performing ultrasonic immersion cleaning and immersion modification to obtain modified ramie fibers; 4) opening and carding the modified ramie fibers to obtain a ramie fiber net; 5) opening and carding viscose fiber to obtain viscose fiber net, alternately spreading one layer of modified ramie fiber net between two or more layers of viscose fiber net, spunlacing, dewatering and drying. The mask base cloth has good dry and wet strength and toughness, and the spunlace composite structure can bear 3D high-cutter-number cutting and subsequent immersion cleaning lifting processes without damage, tearing and deformation; good air and moisture permeability, soft and comfortable touch, good fitting property and strong liquid holding and preserving capability, and is suitable for producing 3D stereo cutting masks.
Description
Technical Field
The invention belongs to the technical field of mask base cloth, and particularly relates to multilayer viscose fiber composite spunlace mask base cloth, and a multilayer viscose fiber mask prepared from the multilayer viscose fiber composite spunlace mask base cloth.
Background
With the progress of society and the improvement of living standard, beauty and skin care products in personal consumption products show strong market growth trend. The facial mask is popular with consumers because of convenient use, multiple functions, low cost and obvious skin care effect, the consumption per capita is gradually increased year by year, and the market scale is huge. The facial mask is divided into a non-carrier type facial mask and a carrier type facial mask according to the using mode, wherein the carrier type facial mask is a facial mask which takes a film forming material or a fiber material (facial mask base cloth) as a carrier and is applied with nutritional ingredients, and the effects of the facial mask comprise nutrition, wrinkle resistance, moisture retention, whitening, freckle removal, repair and the like. The largest circulation in the current market is the patch type mask taking a mask base cloth as a carrier, common mask base cloth materials comprise non-woven fabrics, natural silk, art silk, hydrogel, cotton fibers, biological fibers, viscose fibers, tencel and the like, and the use effect and the production cost of the patch type mask are seriously influenced by the performance difference of the mask base cloth.
The viscose fiber is a regenerated cellulose fiber, which is prepared by using natural fibers (such as wood fiber, cotton linter and the like) as raw materials, preparing soluble cellulose xanthate through the processes of alkalization, aging, sulfonation and the like, dissolving the soluble cellulose xanthate in dilute alkali liquor to prepare viscose, and performing wet spinning. The basic composition of ordinary viscose fibres is cellulose (C)6H10O5) And n, the chemical structure is similar to cotton fiber, the cross section is of a sawtooth-shaped skin-core structure, the longitudinal direction is straight, the grooves are arranged, the length is regular, the moisture absorption and the water retention property are good (the moisture content is in accordance with the physiological requirement of human skin), the impurity content is low, the combing is easy, the strength is high, the biocompatibility is good, and the mask base cloth is suitable for preparing the patch type mask. However, the mask base cloth made of pure viscose fibers has a soft structure, is easy to deform and low in wet strength, the mask expands after being soaked in water and nutrient solution (mask solution), and the structure is easy to distort and tear after being slightly pulled, so that the mask base cloth is not generally used for preparing the mask base cloth independently and needs to be blended with other structural fibers.
The application effect of the patch type mask depends on the performance and quality of a mask base cloth and nutrient solution (mask solution), the patch type mask also needs to be perfectly attached to the face of a human body, the effect of body shaping and clothes cutting is achieved by trying to cover all dead corners of the face of the human body in the application process, professional mask cutting can improve the attachment effect of the mask and is more beneficial to the nutrient solution (mask solution) entering the skin, mask cutting is generally divided into three types, namely ① basic cutting is the most common cutting mode, namely gaps are reserved on two sides of the eyes, cheekbones and two sides of the chin, so that the mask can be attached to the face and is beneficial to absorption of the nutrient solution, the defect is that the mask can not be different according to different people, basic cutting is designed according to the conditions of the middle and human faces, if the face is longer or square, the attachment performance is weakened ② slicing, namely the upper and lower slicing is adopted, the mask can extend the face to the neck, waste is saved, the neck protection can be achieved, ③ 3D cutting is capable of simulating three-dimensional shaping of human body, seamless and soft, moist, the mask can be attached to the existing mask, the requirements of a common face cutting knife, the mask is good in the existing mask, the requirements of the left-side, the left-edge, right, left-side, right, soft, and right, and left-side, and right side, and left-side, and right side.
Disclosure of Invention
The invention aims to provide a multilayer viscose fiber composite spunlace mask base fabric suitable for 3D stereoscopic cutting.
The second purpose of the invention is to provide a multilayer viscose fiber facial mask prepared by the multilayer viscose fiber composite spunlace facial mask base cloth.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a multi-layer viscose fiber composite spunlace mask base fabric is prepared by the following steps:
1) cutting raw ramie into small sections with the length of 30-50mm, soaking in water at the temperature of 55-60 ℃ for 40-60min, taking out, and dehydrating until the water content is 45-50% to obtain a softening material;
2) placing the softened material obtained in the step 1) in a steam explosion device for steam explosion, wherein the steam temperature is 220-230 ℃, the explosion pressure is 1.8-2.2MPa, the heat and pressure are preserved for 3.0-3.5min, and the mixture is discharged by pressure relief to obtain an explosion mixture;
3) placing the blasting mixture obtained in the step 2) in water for ultrasonic immersion cleaning and impurity removal, taking out, draining and drying to obtain ramie fibers; soaking the obtained ramie fibers in a chitosan acetic acid aqueous solution for carrying out soaking modification, then taking out and extruding out redundant liquid, and drying to obtain modified ramie fibers;
4) opening and carding the modified ramie fiber obtained in the step 3) to obtain the ramie fiber with the gram weight of 9-11g/m2The modified ramie fiber web of (1);
5) opening and carding viscose fibers to obtain a viscose fiber web, crossly sandwiching one layer of the modified ramie fiber web obtained in the step 4) between two or more layers of viscose fiber webs, and then carrying out spunlace reinforcement, dehydration and drying to obtain the viscose fiber web with the thickness of 0.35-0.45mm and the gram weight of 35-45g/m2The non-woven fabric is the mask base fabric.
In the step 3), the ultrasonic frequency of the ultrasonic immersion cleaning is 30-40kHz, and the temperature is 55-60 ℃; the ultrasonic immersion cleaning time is 1.0-1.5 h.
In the step 3), the drying temperature of the ramie fibers is 80-90 ℃, and the ramie fibers are dried until the water content of the ramie fibers is not more than 10%; the drying temperature of the modified ramie fibers is 80-90 ℃, and the modified ramie fibers are dried until the water content of the modified ramie fibers is not more than 10%.
In the step 3), the chitosan acetic acid aqueous solution is prepared by dissolving chitosan in acetic acid aqueous solution, and the mass concentration of the chitosan is 3.0% -3.5%.
The mass concentration of acetic acid in the acetic acid aqueous solution is 5.0-6.0%.
Further, the bath ratio of the impregnation modification is 1: 15-20. Stirring and defoaming for 15-20min in the dipping process, and carrying out negative pressure defoaming for 20-30 s.
In the step 3), the weight of the modified ramie fiber obtained after the dipping modification is controlled to be increased by 10-12% compared with the weight of the ramie fiber before the dipping modification.
In the step 5), the fineness of the viscose fiber is 1.5-2.0dtex, and the length is 30-50 mm.
In the step 5), the water jet pressure of the water jet reinforcement is 15-20bar, and the diameter of the outlet of the water jet hole is 0.08-0.12 mm.
In the step 5), the dehydration is compression dehydration by a compression roller.
In the step 5), the drying temperature is 140-160 ℃; the water content of the obtained non-woven fabric is 5.0-7.0%.
A viscose fiber composite facial mask prepared by the multilayer viscose fiber composite spunlace facial mask base cloth. And soaking the mask base cloth into essence (mask nutrient solution) to enable the essence to fully absorb the liquid, so as to prepare the viscose fiber composite mask. The mass ratio of the mask base cloth to the essence carried by the mask base cloth is 1 (9-12).
The multilayer viscose fiber composite spunlace mask base cloth is prepared by cutting ramie raw ramie into small sections, soaking the small sections in water at the temperature of 55-60 ℃ for 40-60min for softening, so that water is fully soaked into the raw ramie, the raw ramie is fully wetted and softened, and the situation that fibers are excessively crushed into powder when dried ramie is directly subjected to steam explosion can be avoided. Taking out the softened material after soaking and dehydrating the softened material until the water content is 45 to 50 percent; placing in a steam explosion device for steam explosion, wherein the steam temperature is 220-230 ℃, the explosion pressure is 1.8-2.2MPa, and the heat and pressure are preserved for 3.0-3.5min, and in the process of heat and pressure preservation, the water in the original hemp is rapidly gasified and expanded, and the structure is disintegrated; the water vapor rapidly diffuses and permeates into the ramie fibers, contacts the hemicellulose and the pectin in the primary wall and the hemicellulose and the lignin in the secondary wall, the pectin is hydrolyzed, and the fibers swell. Under the conditions of high temperature and high pressure, the lignin and the hemicellulose in the ramie fiber are hydrolyzed rapidly, the pectin is dissolved out, the colloid macromolecules are destroyed, and the gluing effect is weakened. Because the heat preservation and pressure maintaining time is short, the hydrolysis reaction of the cellulose which is the main component of the raw ramie is weak, and the structure and the strength of the ramie single fiber are not influenced. After the heat preservation and pressure maintenance are finished, instant pressure relief and discharging are carried out by the steam explosion device, the pressure is suddenly released, the temperature is rapidly reduced, the wet raw ramie is exploded by secondary steam generated in the process, the fiber structure is rapidly torn due to the loss of the gluing effect of colloid macromolecules, the ramie fibers are separated and refined, and single fibers are fully released.
When the multilayer viscose fiber composite spunlace mask base cloth is prepared, an explosion mixture obtained by steam explosion of ramie raw ramie is quickly placed in water for ultrasonic immersion cleaning before being cooled, and water-soluble colloid substances are dissolved out under the action of ultrasonic cavitation; in the ultrasonic immersion cleaning process, ramie bark and other impurities are sorted and removed. Because the steam explosion damages the glued structure of the colloid and the fiber, the combination of hot water and ultrasound is adopted, so that the water-soluble colloid substance can be fully dissolved out in a short time, and then the ramie fiber which takes the cellulose as the main component is taken out for draining and drying.
Because the top end of the ramie fiber is sharp and itchy when contacting with a human body, the surface of the obtained ramie fiber is modified. The method comprises the steps of immersing the ramie fibers into a chitosan acetic acid aqueous solution for carrying out immersion modification, taking out the ramie fibers, extruding out redundant liquid, drying the ramie fibers to obtain modified ramie fibers, and attaching a chitosan thin layer on the surfaces of the modified ramie fibers. The chitosan has good biocompatibility, and the macromolecular structure of the chitosan also enables the chitosan to have excellent performances of resisting bacteria, removing mites, diminishing inflammation, suppurating, relieving pain, removing scars, reducing the precipitation of wound surface liquid, facilitating the healing of wound parts and the like. The sharp part of the modified ramie fiber obtained by dipping modification is wrapped and passivated by chitosan and is contacted with the skin of a human body, so that the biocompatibility and the antibacterial property of the ramie fiber can be fully exerted, and the hydrophilicity and the liquid carrying capacity of the ramie fiber are further improved.
The invention relates to a multilayer viscose fiber composite spunlace mask base fabric, which is prepared by opening and carding modified ramie fibers to obtain a basis weight of 9-11g/m2The modified ramie fiber web of (1); one layer of modified ramie fiber net is crossly sandwiched between two or more layers of viscose fiber nets, and the obtained product has a thickness of 0.35-0.45mm and a gram weight of 35-45g/m2The nonwoven fabric of (1). The modified ramie fiber net retains the characteristics of strong strength and toughness of ramie fibers, and the ramie fiber net and the viscose fiber net are compounded, crossed and laid, and then spunlaced to prepare the mask base fabric, so that the strength and toughness of the non-woven fabric are greatly improved, and the high strength and toughness in a dry state ensure the good processability of the non-woven fabric, and the non-woven fabric can bear the high strength and toughness of the ramie fibers3D high cutter number cutting without damage and deformation; the high strength and toughness under the wet state ensure that the film does not tear and deform when the film is subjected to immersion pulling, folding bagging and light pulling and hard pulling in use after 3D high-cutter-count cutting, and the structural integrity of the film is kept.
Through detection, the multilayer viscose fiber composite spunlace mask base cloth is small in thickness and low in gram weight, and meets the use requirements of thin mask base cloth on the market; the breaking strength in a dry state is more than 41.01N, the breaking elongation is between 37.5 and 38.5 percent, the breaking strength in a wet state is more than 43.85N, the breaking elongation is between 34 and 35 percent, the mechanical property is good, the breaking strength is good in both the dry state and the wet state, and the processing and the use are convenient; bending rigidity is 0.0604-0.0659 cN-cm2The softness of the viscose fiber non-woven fabric is not influenced by the modified ramie fiber net sandwiched between the middle layers between the layers/cm on the premise of small thickness and low gram weight, and the mask base fabric is soft and comfortable in touch and good in fitting property with the human face. The mask base cloth has air permeability of more than 2865mm/s and moisture permeability of 1309 g/(cm)2D) above, good air and moisture permeability, no stuffiness when being applied to the face, no influence on normal breathing of the face skin, and strong comfort; the maximum liquid (water) absorption capacity reaches 24.89g/g, and the water absorption is good; the simulated human body holds liquid for 20min at 37 ℃, the water loss is only about 1.0g/g, the liquid loss is small, the liquid retention rate is high, and the liquid retention capacity is strong. The facial mask base cloth has the antibacterial rate of more than 98.31 percent to staphylococcus aureus and the antibacterial rate of more than 94.35 percent to escherichia coli, has good antibacterial and bacteriostatic properties, has no adverse reactions such as sensitization and the like to human skin, and is safe and reliable.
According to the preparation method of the multilayer viscose fiber composite spunlace mask base cloth, raw material fibers are all biomass materials, and after the base cloth is used and thrown away, the degradation speed in the environment is high, and no environmental pollution is caused; the process production process does not involve excessive chemicals, has little chemical substance residue, is safe and reliable, and is green and environment-friendly.
Detailed Description
The present invention will be further described with reference to the following embodiments.
In the specific implementation mode, the used ramie raw ramie is a ramie polyploid (Tri-1) high-count variety (the fiber count is more than or equal to 2500Nm), the impurity content is less than or equal to 0.1 percent, the hull attachment rate is less than or equal to 0.01 percent, and the phenomenon of mildew is avoided; before use, the utility model is unbundled and loosened without binding.
The chitosan has deacetylation degree of 95% and molecular weight of 4 × 105-6×105. The chitosan acetic acid aqueous solution is prepared by dissolving chitosan in an acetic acid aqueous solution, and the mass concentration of acetic acid in the acetic acid aqueous solution is 5.0%.
The viscose fiber is a commercial product, the specification is 1.67dtex multiplied by 38mm, the dry breaking strength is 2.58cN/dtex, the wet breaking strength is 1.32cN/dtex, the dry breaking elongation is 20.7%, the moisture regain is 12.3%, and the whiteness is 91.4%.
Example 1
The multilayer viscose fiber composite spunlace mask base cloth of the embodiment is prepared by the following method:
1) cutting raw ramie into small sections with the length of 30-50mm, soaking in water at the temperature of 55 ℃ for 60min, taking out, extruding and dehydrating until the water content is 48% to obtain a softening material;
2) placing the softened material obtained in the step 1) in a steam explosion device for steam explosion, wherein the steam temperature is 220 ℃, the explosion pressure is 2.2MPa, the temperature and pressure are kept for 3.0min, and the pressure is relieved and the material is discharged to obtain an explosion mixture;
3) immediately placing the blasting mixture obtained in the step 2) in water of 55 ℃ for ultrasonic immersion cleaning to dissolve out the colloid, wherein the ultrasonic frequency is 40kHz, the ultrasonic immersion cleaning time is 1.5h, fiber agglomeration is broken up in the immersion cleaning process, ramie peels floating on the surface are sorted and removed, and after being taken out and drained, the ramie peels are dried at 90 ℃ until the water content is 8% to obtain ramie fibers;
soaking the obtained ramie fibers in an acetic acid aqueous solution with the mass concentration of chitosan being 3.0% for soaking modification, stirring and defoaming for 15min in the soaking process, and defoaming for 30s under negative pressure; taking out and extruding the excessive liquid, and drying at 90 ℃ until the water content is 8 percent to obtain the modified ramie fiber;
4) opening and carding the modified ramie fiber obtained in the step 3) to obtain the ramie fiber with the gram weight of 10g/m2Modified ramie fiber web；
5) Opening and carding viscose fiber to obtain the viscose fiber with the gram weight of 10g/m2The viscose fiber net is prepared by cross lapping according to the sequence of a 1 st layer of viscose fiber net, a 2 nd layer of viscose fiber net, a 3 rd layer of modified ramie fiber net and a 4 th layer of viscose fiber net, then carrying out spunlace reinforcement on the front side and the back side (the spunlace pressure is 15bar, the diameter of a water needle hole outlet is 0.12mm), dehydrating, drying at 140 ℃ until the water content is 6.0%, and obtaining the viscose fiber net with the thickness of 0.40mm and the gram weight of 40g/m2The non-woven fabric is the multilayer viscose fiber composite spunlace mask base fabric.
Example 2
The multilayer viscose fiber composite spunlace mask base cloth of the embodiment is prepared by the following method:
1) cutting raw ramie into small sections with the length of 30-50mm, soaking in water at the temperature of 60 ℃ for 40min, taking out, extruding and dehydrating until the water content is 48% to obtain a softening material;
2) placing the softened material obtained in the step 1) in a steam explosion device for steam explosion, wherein the steam temperature is 230 ℃, the explosion pressure is 1.8MPa, preserving heat and maintaining pressure for 3.5min, and releasing pressure and discharging to obtain an explosion mixture;
3) immediately placing the blasting mixture obtained in the step 2) in water of 60 ℃ for ultrasonic immersion cleaning to dissolve out the colloid, wherein the ultrasonic frequency is 30kHz, the ultrasonic immersion cleaning time is 1.5h, fiber agglomeration is broken up in the immersion cleaning process, ramie peels floating on the surface are sorted and removed, and after being taken out and drained, the ramie peels are dried under the condition of 90 ℃ until the water content is 8% to obtain ramie fibers;
soaking the obtained ramie fibers in an acetic acid aqueous solution with the mass concentration of chitosan being 3.0% for soaking modification, stirring and defoaming for 20min in the soaking process, and defoaming for 20s under negative pressure; taking out and extruding the excessive liquid, and drying at 90 ℃ until the water content is 8 percent to obtain the modified ramie fiber;
4) opening and carding the modified ramie fiber obtained in the step 3) to obtain the ramie fiber with the gram weight of 10g/m2The modified ramie fiber web of (1);
5) opening and carding viscose fiber to obtain the viscose fiber with the gram weight of 10g/m2According to layer 1, layer 2Sequentially and crossly lapping the viscose fiber net, the 3 rd layer of modified ramie fiber net and the 4 th layer of viscose fiber net, performing spunlace reinforcement on the front and back surfaces (the spunlace pressure is 15bar, and the diameter of the outlet of a water needle hole is 0.12mm), dehydrating, and drying at 140 ℃ until the water content is 6.0 percent to obtain the viscose fiber net with the thickness of 0.40mm and the gram weight of 40g/m2The non-woven fabric is the multilayer viscose fiber composite spunlace mask base fabric.
Example 3
The multilayer viscose fiber composite spunlace mask base cloth of the embodiment is prepared by the following method:
1) cutting raw ramie into small sections with the length of 30-50mm, soaking in water at the temperature of 55 ℃ for 50min, taking out, extruding and dehydrating until the water content is 48% to obtain a softening material;
2) placing the softened material obtained in the step 1) in a steam explosion device for steam explosion, wherein the steam temperature is 225 ℃, the explosion pressure is 2.0MPa, preserving heat and maintaining pressure for 3.5min, and releasing pressure and discharging to obtain an explosion mixture;
3) immediately placing the blasting mixture obtained in the step 2) in water of 60 ℃ for ultrasonic immersion cleaning to dissolve out the colloid, wherein the ultrasonic frequency is 40kHz, the ultrasonic immersion cleaning time is 1.0h, fiber agglomeration is broken up in the immersion cleaning process, ramie peels floating on the surface are sorted and removed, and after being taken out and drained, the ramie peels are dried under the condition of 90 ℃ until the water content is 8% to obtain ramie fibers;
soaking the obtained ramie fibers in an acetic acid aqueous solution with the mass concentration of chitosan being 3.0% for soaking modification, stirring and defoaming for 18min in the soaking process, and defoaming for 25s under negative pressure; taking out and extruding the excessive liquid, and drying at 90 ℃ until the water content is 8 percent to obtain the modified ramie fiber;
4) opening and carding the modified ramie fiber obtained in the step 3) to obtain the ramie fiber with the gram weight of 10g/m2The modified ramie fiber web of (1);
5) opening and carding viscose fiber to obtain the viscose fiber with the gram weight of 10g/m2The viscose fiber net is cross-lapped according to the sequence of a 1 st layer of viscose fiber net, a 2 nd layer of viscose fiber net, a 3 rd layer of modified ramie fiber net and a 4 th layer of viscose fiber net, and then is reinforced by water stabbing on the front and back surfaces (the water stabbing pressure is 15bar, and the outlet of a water needle hole is straightDiameter of 0.12mm), dehydrating, drying at 140 deg.C to water content of 6.0%, to obtain product with thickness of 0.40mm and gram weight of 40g/m2The non-woven fabric is the multilayer viscose fiber composite spunlace mask base fabric.
Experimental example 1
In this experimental example, the performance of the multilayer viscose fiber composite spunlace mask base fabric obtained in examples 1 to 3 was tested, and the results are shown in table 1.
Wherein the liquid loss amount is the condition of simulating that the facial mask is applied on the face of a human body, the facial mask base cloth (in the maximum liquid absorption amount liquid holding state) with the liquid absorption performance detected is paved in a drying container at 37 ℃, the surface is opened in the air, the facial mask is taken out and weighed after 20min (the time of applying the facial mask generally), and the water loss amount is detected.
Table 1 test results of performance of multi-layer viscose fiber composite spunlace mask base cloth obtained in examples 1 to 3
Note: the breaking strength and elongation at break in table 1 are average values of the transverse and longitudinal test results of the test specimens.
As can be seen from Table 1, the gram weight of the multi-layer viscose fiber composite spunlace mask base cloth obtained in examples 1-3 is 40 +/-1 g/m2The thickness is between 0.40 +/-0.01, and the use requirements of thin mask base cloth on the market are met; the breaking strength in dry state is above 41.01N, the breaking elongation is between 37.5% and 38.5%, the breaking strength in wet state is above 43.85N, and the breaking elongation is between 34.0% and 35.0%. Experimental results show that the modified ramie fiber net in the multilayer viscose fiber composite spunlace mask base cloth greatly improves the wet strength of viscose fibers, so that the mask base cloth has higher strength and moderate elongation at break.
In order to examine the softness of the mask base fabric, the bending rigidity of the multilayer viscose fiber composite spunlace mask base fabric obtained in examples 1 to 3 was examined. The test results show that the bending rigidity of the multilayer viscose fiber composite spunlace mask base cloth obtained in the examples 1 to 3 is 0.0604 to 0.0659cN cm2Is between/cm. The experimental result shows that the base cloth is small in thickness and low in gram weight, the modified ramie fiber net sandwiched between the base cloth does not influence the softness of the viscose fiber non-woven cloth, and the multilayer viscose fiber composite spunlace mask base cloth obtained by the invention is soft and comfortable in touch and good in fitting property with the human face.
As can be seen from Table 1, the air permeability of the multilayer viscose fiber composite spunlace mask base cloth obtained in examples 1-3 is more than 2865mm/s, and the moisture permeability is 1309 g/(cm)2D) above, good air and moisture permeability, no stuffiness when being applied to the face, and strong comfort; the maximum liquid (water) absorption capacity reaches 24.89g/g, and the water absorption is good; the simulated human body holds liquid for 20min at 37 ℃, the water loss is only about 1.0g/g, the liquid loss is small, the liquid retention rate is high, and the liquid retention capacity is strong.
In order to examine the safety of the mask base cloth, the antibacterial property and the anti-sensitivity of the multilayer viscose fiber composite spunlace mask base cloth obtained in the examples 1 to 3 are detected. The bacteriostatic rate of the mask base cloth on staphylococcus aureus reaches more than 98.31 percent, and the bacteriostatic rate on escherichia coli reaches more than 94.35 percent. According to the requirements of technical standards for safety of cosmetics (2015 edition), 30 qualified volunteers are selected to carry out a human body patch test of mask base cloth on the inner side of the arm, and the results prove that the test samples have no adverse reactions such as pruritus, redness and swelling, allergy and the like. Experimental results show that the multilayer viscose fiber composite spunlace mask base cloth has good antibacterial and bacteriostatic properties, has no adverse reactions such as sensitization and the like to human skin, and is safe and reliable.
Experimental example 2
The multilayer viscose fiber composite spunlace mask base cloth obtained in the embodiments 1-3 is subjected to 16-blade 3D three-dimensional cutting, and the cut film bare cloth has a complete structure, is burr-free, is not torn, and is not deformed. Experimental results show that the multilayer viscose composite spunlace mask base cloth meets the requirements of 3D system cutting and is suitable for 3D stereoscopic cutting.
Claims (9)
1. The utility model provides a compound water thorn facial mask base cloth of multilayer viscose which characterized in that: the preparation method comprises the following steps:
1) cutting raw ramie into small sections with the length of 30-50mm, soaking in water at the temperature of 55-60 ℃ for 40-60min, taking out, and dehydrating until the water content is 45-50% to obtain a softening material;
2) placing the softened material obtained in the step 1) in a steam explosion device for steam explosion, wherein the steam temperature is 220-230 ℃, the explosion pressure is 1.8-2.2MPa, the heat and pressure are preserved for 3.0-3.5min, and the mixture is discharged by pressure relief to obtain an explosion mixture;
3) placing the blasting mixture obtained in the step 2) in water for ultrasonic immersion cleaning and impurity removal, taking out, draining and drying to obtain ramie fibers; soaking the obtained ramie fibers in a chitosan acetic acid aqueous solution for carrying out soaking modification, then taking out and extruding out redundant liquid, and drying to obtain modified ramie fibers;
4) opening and carding the modified ramie fiber obtained in the step 3) to obtain the ramie fiber with the gram weight of 9-11g/m2The modified ramie fiber web of (1);
5) opening and carding viscose fibers to obtain a viscose fiber web, crossly sandwiching one layer of the modified ramie fiber web obtained in the step 4) between two or more layers of viscose fiber webs, and then carrying out spunlace reinforcement, dehydration and drying to obtain the viscose fiber web with the thickness of 0.35-0.45mm and the gram weight of 35-45g/m2The non-woven fabric is the mask base fabric.
2. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 3), the ultrasonic frequency of the ultrasonic immersion cleaning is 30-40kHz, and the temperature of the cleaning water is 55-60 ℃; the ultrasonic immersion cleaning time is 1.0-1.5 h.
3. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 3), the drying temperature of the ramie fibers is 80-90 ℃, and the ramie fibers are dried until the water content of the ramie fibers is not more than 10%; the drying temperature of the modified ramie fibers is 80-90 ℃, and the modified ramie fibers are dried until the water content of the modified ramie fibers is not more than 10%.
4. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 3), the chitosan acetic acid aqueous solution is prepared by dissolving chitosan in acetic acid aqueous solution, and the mass concentration of the chitosan is 3.0% -3.5%.
5. The multilayer viscose fiber composite spunlace mask base fabric according to claim 4, wherein: the mass concentration of acetic acid in the acetic acid aqueous solution is 5.0-6.0%.
6. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 3), the weight of the modified ramie fiber obtained after the dipping modification is controlled to be increased by 10-12% compared with the weight of the ramie fiber before the dipping modification.
7. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 5), the fineness of the viscose fiber is 1.5-2.0dtex, and the length is 30-50 mm.
8. The multilayer viscose fiber composite spunlace mask base fabric according to claim 1, wherein: in the step 5), the water jet pressure of the water jet reinforcement is 15-20bar, and the diameter of the outlet of the water jet hole is 0.08-0.12 mm.
9. A viscose composite facial mask prepared from the multilayer viscose composite spunlace facial mask base fabric of any one of claims 1-8.
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