CN103407205B - Konjac glucomannan fiber wet tissue and method for preparing same - Google Patents
Konjac glucomannan fiber wet tissue and method for preparing same Download PDFInfo
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Abstract
The invention relates to a konjac glucomannan fiber wet tissue and a method for preparing the konjac glucomannan fiber wet tissue. The method for preparing the konjac glucomannan fiber wet tissue comprises the preparation of konjac glucomannan acrylic ester, acrylic ester esterification modification, the preparation of konjac glucomannan spinning solution and the preparation of the konjac glucomannan fiber wet tissue. The konjac glucomannan fiber wet tissue is made of natural fibers like konjac glucomannan and corn starch and other plasticizers, wherein the natural fibers are used as main raw materials of the konjac glucomannan fiber wet tissue. The konjac glucomannan is a natural plant polysaccharide, has good water binding capacity, hydroscopicity and antibacterial property and is large in tension strength, good in toughness, and high in tensile strength and bursting strength. Compared with a traditional synthetic fiber wet tissue, the konjac glucomannan fiber wet tissue is made of 100% natural plant fibers, has the advantages of being high in tensile strength, large in liquid absorbing amount, high in liquid maintaining amount, exquisite and soft in hand feeling, sterile, sanitary, low in production cost and free of environmental pollution and doing no harm to human bodies, and accords with modern consumption concepts and market requirements.
Description
Technical field
The present invention relates to a kind of fiber wet tissue and preparation method thereof, be specifically related to a kind of konjaku glucomannan fiber wet tissue and preparation method thereof.
Background technology
In our everyday environments, bacterium is ubiquitous, but due to every social activitieies such as working and learning, hand needs the constantly various food of contact, and we can infect a large amount of microorganisms and pathogenic bacteria thus.So we must form the custom of often washing one's hands.But in daily life, when particularly carrying out outdoor activities, but can not wash one's hands in time, this compromises the health of people to people to a certain extent, so the demand of hygenic towelette and day increase severely.Particularly over the past two years, the production & marketing development of hygenic towelette is very fast, and purposes becomes more diverse, and gradually becomes the new lover in sanitary paper product market.
But the paper that existing disinfection wet tissue is made mainly with non-woven fabrics and traditional paper process is greatly as carrier, and soak with general chemistry disinfectant and form, the security of use is open to suspicion, also there is environmental problem in whole technique.Therefore, along with the continuous enhancing of people's environmental protection consciousness with to improving constantly of requiring of inherently safe and the continuous renewal of product improves, urgently our research and development of the safe environment protection type hygenic towelette of a kind of high specific retention, high antibiotic property.
Application number is patent of invention the method for hygenic towelette " manufacture " (applying date: 1997.07.25) of 97117967.0, the hygenic towelette that when providing use, moistening intensity improves.In the manufacture process of hygenic towelette, by water-swellable relatively low so that water-insoluble carboxymethyl cellulose salt tablet in dipping containing the liquid of polyvalent metal ion, obtain hygenic towelette.Although this invents the wettability that improve hygenic towelette, mostly polyvalent metal ion is wherein the alkaline metal ions such as iron, zinc of divalent, and have stronger excitant to skin, Long-Time Service is unfavorable for health.The raw material that manufacture method of the present invention uses, comprises carboxymethyl cellulose or its salt, mostly is the synthetic fibers such as synthetic fibers, nylon, polyester, is difficult to biodegradation after using.
Application number is patent of invention " a kind of high-efficiency sterilization hygientic towelette " (applying date: 2008.03.12) of 200810101766.3, and a kind of sterilizing paper towels provided, is obtained by the agent of paper handkerchief soaking sterilization.This disinfection paper handkerchief has possessed the function of good sterilization and sterilization, but this hygenic towelette is that soaking sterilization agent obtains on the basis of original hygenic towelette matrix, does not fundamentally solve the safe handling sex chromosome mosaicism of disinfected paper napkin.
Summary of the invention
The object of this invention is to provide a kind of konjaku glucomannan fiber wet tissue and preparation method thereof.Utilize the natural fiber such as konjaku glucomannan and cornstarch for main raw material(s), utilize the high-hydroscopicity of konjaku glucomannan and bloating tendency, high retentiveness, high antibiotic property also adds (glycerine, ethanol) improve the tensile strength of konjaku glucomannan fiber wet tissue, bursting strength and percentage elongation, add the retentiveness that monolauryl maleate improves konjaku glucomannan fiber wet tissue, add shitosan, acrylic acid, to konjak glucomannan esters modification, improve the antibacterial ability of konjaku glucomannan fiber wet tissue, a kind of high specific retention is provided, safe environment protection type hygenic towelette of high antibiotic property and preparation method thereof.
The preparation method of konjaku glucomannan fiber wet tissue of the present invention, comprise the preparation of konjac glucomannan crylic acid ester, konjak glucomannan esters modification, konjaku glucomannan imitate the preparation of a slurries, the preparation of konjaku glucomannan fiber wet tissue, it is characterized in that:
(1) preparation of konjac glucomannan crylic acid ester: hot water taking also keeps 45 ~ 50 DEG C, adds the concentrated sulfuric acid that konjaku glucomannan, acrylic acid and volumetric concentration are 98% while stirring, reaction time 4h ~ 4.5h; Then, rotate and evaporation and concentration reactant liquor with the rotating speed of 500r/min, being concentrated into moisture content is 0.1% ~ 0.5%, add the ethanol that volumetric concentration is 60%, precipitation, taking precipitate volumetric concentration is the ethanol washing 2 ~ 3 times of 95%, filter and sediment is at room temperature air-dry after pulverize, obtain substance A, for subsequent use; The mass ratio of described acrylic acid and konjaku glucomannan and water is 1:100 ~ 200, and the mass ratio of acrylic acid and konjaku glucomannan is 3 ~ 3.82: 1, and the concentrated sulfuric acid accounts for 1% ~ 2% of acrylic acid volume;
(2) konjak glucomannan esters modification: it is in the ethanol of 60% that monolauryl maleate is dissolved in volumetric concentration by the ratio being 1: 200 ~ 300 in mass volume ratio (g/mL), is 3 ~ 5 with the dilute sulfuric acid adjust pH that volumetric concentration is 20%; The ratio being 1:10 ~ 20 in the mass ratio of monolauryl maleate and konjaku glucomannan adds konjaku glucomannan, stir, 1 ~ 3h is reacted at 30 ~ 50 DEG C of temperature, then be the ethanol washing precipitation of 60% by volumetric concentration, by sediment vacuum drying at 50 DEG C after filtration, obtain substance B, pulverize for subsequent use;
(3) konjaku glucomannan imitates the preparation of a slurries:
(a) extracting corn starch, the ratio being 1: 100 ~ 300 in mass volume ratio (g/mL) adds sterilized water, swelling 12 ~ 14h under 65 ~ 90 DEG C of conditions, and dispersion, obtains substance C;
B () than the ratio being 1: 100 ~ 300 in quality volume (g/mL), is got shitosan and is added in the acetic acid aqueous solution of pH 3 ~ 3.5, after stirring and dissolving under 65 ~ 90 DEG C of conditions swelling 12 ~ 14h, dispersion, obtain material D;
C substance B that substance A obtained for step (1) and step (2) obtain by () is the ratio mixing of 1: 1 ~ 2 according to mass ratio, obtains AB mixture; Substance C and material D are mixed according to the ratio that volume ratio is 2 ~ 3: 1, obtains CD mixed liquor; AB mixture is added in CD mixed liquor, then at ultrasonic power 100 ~ 180W, dispersion 15 ~ 20min at 25 DEG C ~ 90 DEG C, obtains konjaku glucomannan and imitate silk slurries;
(4) preparation of konjaku glucomannan fiber wet tissue: the konjaku glucomannan of step (3) is imitated silk slurries through the process of fiber wet spinning a complete set of equipment, namely obtain fiber wet tissue.The process of described fiber wet spinning a complete set of equipment
Of the present inventionly raw materials usedly be food-grade.
The present invention goes back konjaku glucomannan fiber wet tissue prepared by Sustainable use said method.
The present invention has the following advantages: konjaku glucomannan fiber wet tissue of the present invention, is aided with other plasticizer with the natural fiber such as konjaku glucomannan and cornstarch and makes for main raw material(s).Konjaku glucomannan is a kind of natural plant polyose, and have excellent retentiveness, water imbibition, antibiotic property and hot strength are large, pliability is good, and tensile strength, bursting strength are high; Cornstarch of the present invention is rich in natural plant fibre, and hygroscopicity is strong.Konjaku glucomannan fiber wet tissue of the present invention is compared with traditional synthetic fibers hygenic towelette, be made up of 100% natural plant fibre, the features such as hygenic towelette product has high-tensile, liquid absorption is large, guarantor's liquid measure is high, use feel fine and smooth softness, the Sterilized sanitation of production.This hygenic towelette avoids conventional wet paper handkerchief repeatedly to use the injury caused skin, can natural degradation after using, back to nature, protection of the environment.This product is applicable to the amusements such as tourism, family, individual, hotel, hotel, office building, hospital, airport, public place uses, to improve quality of the life, to promote service class.
Security and the serviceability of novel konjaku glucomannan fiber wet tissue of the present invention meet relative national standards requirement completely, the present invention is for main raw material(s) with the natural fiber such as konjaku glucomannan and cornstarch, be aided with other plasticizer (such as shitosan), shitosan of the present invention is that occurring in nature is only second to cellulosic second largest biological polyoses, also be the alkaline polysaccharide that occurring in nature uniquely exists in a large number simultaneously, there is good biocompatibility, biodegradability and the good characteristic such as antibacterial, anticorrosion ".The present invention utilizes konjaku glucomannan and monolauryl maleate dry method esterification modification, and viscosity and the retentiveness of modified product increase significantly, and have good biological degradability.Konjac glucomannan crylic acid ester of the present invention has stronger antibacterial effect, has good biological degradability, is a kind of biomaterial of safety and environmental protection.It is low that the present invention has production cost, non-environmental-pollution, to advantages such as human body do not injure, meets modern consumption concept and the market demand.
Konjaku glucomannan fiber wet tissue of the present invention and common hygenic towelette are done following performance test:
(1) water-retaining property: get konjaku glucomannan fiber wet tissue of the present invention and each 3 pieces of common hygenic towelette respectively, under being placed in equal temperature environment i.e. 50 DEG C of high temperature; Respectively get 3 pieces again, at being placed in equal temperature environment and normal temperature 15 DEG C, calculate often kind of hygenic towelette at different temperatures completely dehydration time required average time.
(2) antibiotic property: test common hygenic towelette, konjaku glucomannan fiber wet tissue carries out sterilizing to the indigneous flora on the right hand of a few individual, wipes hand 2min, and observes sterilization average effect respectively.
(3) biodegradable: respectively common hygenic towelette, each 3 pieces of konjaku glucomannan fiber wet tissue are buried in same soil, observed hygenic towelette degraded situation after one month.
The result of the performance comparison of konjaku glucomannan fiber wet tissue of the present invention and common hygenic towelette is as shown in table 1.
The performance comparison of table 1 hygenic towelette of the present invention and common hygenic towelette
Through above contrast test, very strong by konjaku glucomannan fiber wet tissue water holding capacity of the present invention, antibiotic property is good, almost can complete biodegradable, and properties is excellent in common hygenic towelette, has fabulous development prospect.
specific embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
Embodiment 1: a kind of preparation method of konjaku glucomannan fiber wet tissue
A preparation method for konjaku glucomannan fiber wet tissue, comprises the following steps:
(1) preparation of konjac glucomannan crylic acid ester: hot water taking also keeps 45 ~ 50 DEG C, adds the concentrated sulfuric acid that konjaku glucomannan, acrylic acid and volumetric concentration are 98% while stirring, reaction time 4h; Then, rotate and evaporation and concentration reactant liquor with the rotating speed of 500r/min, being concentrated into moisture content is 0.5%, add the ethanol that volumetric concentration is 60%, precipitation, taking precipitate volumetric concentration be 95% ethanol wash 3 times, filter and sediment is at room temperature air-dry after pulverize, obtain substance A, for subsequent use; The mass ratio of described acrylic acid and konjaku glucomannan and water is 1:150, and the mass ratio of acrylic acid and konjaku glucomannan is 3.5: 1, and the concentrated sulfuric acid accounts for 1.5% of acrylic acid volume;
(2) konjak glucomannan esters modification: it is in the ethanol of 60% that monolauryl maleate is dissolved in volumetric concentration by the ratio being 1: 250 in mass volume ratio (g/mL), is 4 with the dilute sulfuric acid adjust pH that volumetric concentration is 20%; The ratio being 1:15 in the mass ratio of monolauryl maleate and konjaku glucomannan adds konjaku glucomannan, stir, 2h is reacted at 40 DEG C of temperature, then be the ethanol washing precipitation of 60% by volumetric concentration, by sediment vacuum drying at 50 DEG C after filtration, obtain substance B, pulverize for subsequent use;
(3) konjaku glucomannan imitates the preparation of a slurries:
(a) extracting corn starch, the ratio being 1: 200 in mass volume ratio (g/mL) adds sterilized water, swelling 13h under 80 DEG C of conditions, and dispersion, obtains substance C;
B () than the ratio being 1: 200 in quality volume (g/mL), is got shitosan and is added in the acetic acid aqueous solution of pH 3.5, after stirring and dissolving under 80 DEG C of conditions swelling 13h, dispersion, obtain material D;
C substance B that substance A obtained for step (1) and step (2) obtain by () is the ratio mixing of 1: 1 according to mass ratio, obtains AB mixture; Substance C and material D are mixed according to the ratio that volume ratio is 2: 1, obtains CD mixed liquor; AB mixture is added in CD mixed liquor, then at ultrasonic power 150W, disperse 20min at 70 DEG C, obtains konjaku glucomannan and imitate silk slurries;
(4) preparation of konjaku glucomannan fiber wet tissue: the konjaku glucomannan of step (3) is imitated silk slurries through the process of fiber wet spinning a complete set of equipment, namely through dissolving, filtration, deaeration, measure, solidify, stretch, wash, shape, reel, boiling slaking after drying, namely obtain fiber wet tissue after cold sterilized.Described fiber wet spinning a complete set of equipment, finger-type number is 105,155, fiber wet spinning a complete set of equipment of 215, dissolving, filtration, deaeration, measure, solidify, stretch, wash, shape, reel, dry after boiling slaking, cold sterilized overall process completed with reference to prior art by fiber wet spinning a complete set of equipment; Concrete steps are as follows:
(a) spinning: by the spinning slurry of step (3) through 180 mesh screen, under being placed in the negative pressure of 400mm mercury column, deaeration is after 0.8 hour, with measuring pump (more than pressure 1 MPa, maximum stream flow: 1200L/H) be delivered to spinning and emit (being generally 3000 to tens thousand of hole) to extrude, tow enters coagulating bath, the volumetric concentration being equipped with pH 4.5 in coagulating bath is the ethanolic solution of 98%, solidify while stretch, draw ratio controls 2.0, volumetric concentration finally by pH4 is winding after 70% acidic ethanol washing, being dried to moisture content is 5%, become konjaku glucomannan high hygroscopicity fibre,
(b) boiling slaking: the konjaku glucomannan high hygroscopicity fibre goods of step (a) are placed in absolute pressure 0.4Mpa, in the water vapour that temperature is 140 DEG C, slaking 25min; After raw silk maturation process, the silk gum aqueous solution made by extraction silk gum, and loaded by the silk gum aqueous solution after leaving standstill 12 h in hygenic towelette mould, 150 DEG C of boiling 5h, are prepared into moulding mixture embryo;
(c) cold sterilized: on the molding mass embryo that step (b) is obtained after even jack, dehydration that it is thawed after freezing 2d under 0 DEG C of condition; Then carry out second time freezing, the time is 6d, and namely the semi-finished product frozen are obtained novel konjaku glucomannan fiber paper handkerchief through thaw dehydration, bleaching, desulfurization, sterilization.Described bleaching agent is hydrogen peroxide, and described bactericide is ozone or ultraviolet.
D () humidification is packed: finally with spun-laced machine, konjaku glucomannan fiber paper handkerchief high pressure obtained for step (c) is reinforced entanglement, then humidification, soaking sterilization thimerosal, pack.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (2)
1. the preparation method of a konjaku glucomannan fiber wet tissue, comprise the preparation of konjac glucomannan crylic acid ester, konjak glucomannan esters modification, konjaku glucomannan imitate the preparation of a slurries, the preparation of konjaku glucomannan fiber wet tissue, it is characterized in that:
(1) preparation of konjac glucomannan crylic acid ester: hot water taking also keeps 45 ~ 50 DEG C, adds the concentrated sulfuric acid that konjaku glucomannan, acrylic acid and volumetric concentration are 98% while stirring, reaction time 4h ~ 4.5h; Then, rotate and evaporation and concentration reactant liquor with the rotating speed of 500r/min, being concentrated into moisture content is 0.1% ~ 0.5%, add the ethanol that volumetric concentration is 60%, precipitation, taking precipitate volumetric concentration is the ethanol washing 2 ~ 3 times of 95%, filter and sediment is at room temperature air-dry after pulverize, obtain substance A, for subsequent use; The mass ratio of described acrylic acid and konjaku glucomannan and water is 1:100 ~ 200, and the mass ratio of acrylic acid and konjaku glucomannan is 3 ~ 3.82: 1, and the concentrated sulfuric acid accounts for 1% ~ 2% of acrylic acid volume;
(2) konjak glucomannan esters modification: in mass volume ratio be 1: 200 ~ 300 ratio monolauryl maleate to be dissolved in volumetric concentration be in the ethanol of 60%, be 3 ~ 5 with the dilute sulfuric acid adjust pH that volumetric concentration is 20%; The ratio being 1:10 ~ 20 in the mass ratio of monolauryl maleate and konjaku glucomannan adds konjaku glucomannan, stir, 1 ~ 3h is reacted at 30 ~ 50 DEG C of temperature, then be the ethanol washing precipitation of 60% by volumetric concentration, by sediment vacuum drying at 50 DEG C after filtration, obtain substance B, pulverize for subsequent use;
(3) konjaku glucomannan imitates the preparation of a slurries:
(a) extracting corn starch, the ratio being 1: 100 ~ 300 in mass volume ratio adds sterilized water, swelling 12 ~ 14h under 65 ~ 90 DEG C of conditions, and dispersion, obtains substance C;
B () is the ratio of 1: 100 ~ 300 in mass volume ratio, get shitosan and add in the acetic acid aqueous solution of pH 3 ~ 3.5, after stirring and dissolving under 65 ~ 90 DEG C of conditions swelling 12 ~ 14h, dispersion, obtain material D;
C substance B that substance A obtained for step (1) and step (2) obtain by () is the ratio mixing of 1: 1 ~ 2 according to mass ratio, obtains AB mixture; Substance C and material D are mixed according to the ratio that volume ratio is 2 ~ 3: 1, obtains CD mixed liquor; AB mixture is added in CD mixed liquor, then at ultrasonic power 100 ~ 180W, dispersion 15 ~ 20min at 25 DEG C ~ 90 DEG C, obtains konjaku glucomannan and imitate silk slurries;
(4) preparation of konjaku glucomannan fiber wet tissue: the konjaku glucomannan of step (3) is imitated silk slurries through the process of fiber wet spinning a complete set of equipment, namely obtain fiber wet tissue;
Described mass volume ratio is g/mL.
2. the konjaku glucomannan fiber wet tissue prepared by method according to claim 1.
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| HUE034811T2 (en) * | 2009-06-19 | 2018-02-28 | Specialites Pet Food | Method for producing highly palatable dry cat food |
| EP2651239A1 (en) * | 2010-12-16 | 2013-10-23 | Spécialités Pet Food | Method for producing highly palatable dry cat food |
| CN105560129B (en) * | 2016-03-03 | 2018-11-30 | 浙江康诚工业产品设计有限公司 | A kind of preparation method of pure natural draft pasteurization towelette |
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