CN103088553A - Degradable bio-fiber wiping material and preparation method thereof - Google Patents
Degradable bio-fiber wiping material and preparation method thereof Download PDFInfo
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- CN103088553A CN103088553A CN2013100209506A CN201310020950A CN103088553A CN 103088553 A CN103088553 A CN 103088553A CN 2013100209506 A CN2013100209506 A CN 2013100209506A CN 201310020950 A CN201310020950 A CN 201310020950A CN 103088553 A CN103088553 A CN 103088553A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
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- 229920002678 cellulose Polymers 0.000 claims abstract description 10
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- 238000009960 carding Methods 0.000 claims description 25
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- 239000011425 bamboo Substances 0.000 claims description 7
- 241000196324 Embryophyta Species 0.000 claims description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000010902 straw Substances 0.000 claims description 5
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- 238000010298 pulverizing process Methods 0.000 description 3
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- 238000005213 imbibition Methods 0.000 description 2
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- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a degradable bio-fiber wiping material and preparation method thereof and belongs to the technical field of bio-fiber wiping materials. The degradable bio-fiber wiping material comprises by mass percent: 5-95% pulp-plate-shaped cellulose pulp fiber and 95-5% polylactic acid fiber, wherein the length of the cellulose pulp fiber is 1-12mm, the degree of fineness of the cellulose pulp fiber is greater than 800 meshes, the length of the polylactic acid fiber is 15-60mm, the denier of the polylactic acid fiber is 0.7- 4dtex, the crimpness of the polylactic acid fiber is 5-25 pieces per inch, and the oil pick-up rate of the polylactic acid fiber is 0.05- 0.5%. The degradable bio-fiber wipe material has the advantages that ideal mechanical and physical properties, extreme drapability, excellent smoothness performance, natural antibacterial function and good strength of the polylactic acid fiber can be displayed, the disadvantage that the polylactic acid fiber is poor in water-absorbing performance can also be compensated, and compost treatment can be conducted to the degradable bio-fiber wipe material without damaging environment after the material is abandoned, not only the advantages of low cost, high strength, good water-absorbing performance, soft hand feel, non-fluff and non-crumb-dropping are embodied, but also economic cheap effect is embodied.
Description
Technical field
The invention belongs to biological fiber Wiping material technical field, be specifically related to a kind of degradable biological fiber Wiping material, and relate to its preparation method.
Background technology
Although adopt the paper product class Wiping material of traditional paper technology production to have environmental protection and cheap strong point, but intensity low (particularly wet strength very fragile), tear-resistant effect is poor, not wear-resisting and easily fall bits etc. is its deficiency, thereby has limited to a great extent the Application Areas of this Wiping material such as cleansing tissue.
In order to satisfy special dimension to the application requirements of Wiping material, the on-woven Wiping material arises at the historic moment.Nearly two during the last ten years, the on-woven Wiping material relies on its good uniformity and mechanical and physical performance and soft and cheap advantage and occupied very important position in Wiping material, has become requisite cleaning material in industrial production and people's daily life and is widely used in the wiping of wiping, automobile and parts thereof to electronic product and wet tissue etc.
Mainly carding and the water thorn (namely Hydroentangled) through the on-woven product processes processes aforementioned on-woven Wiping material in prior art take fibers such as terylene, viscose glues as raw material.Because materials not only needs to consume a large amount of petroleum base fiber or viscose glue, and exist the drawback of high pollution and high energy consumption (can produce a large amount of carbon disulfide, hydrogen sulfide and waste water and dregs etc. in such as the viscose glue production process in the process of preparation materials, the industry that belongs to national developmental limitation), therefore, run counter to the recycling economy of advocating at present, energy-conservation and environmental protection spirit.
In recent years, along with global range is increasing to the consumption of on-woven Wiping material, follow and the problem of following two aspects of arriving also becomes increasingly conspicuous; The one, cause non-renewable petroleum resources increasingly deficient; The 2nd, because hard degradation impacts ecological environment after discarded.
in published Chinese patent literature, can be seen in the biological fiber Wiping material that is conducive to degrade, for example CN201553877U recommends to have " composite spun-laced fabric with wood pulp fiber layer ", it is to be made of wood pulp fiber layer and textile fabric layer, and the material of textile fabric layer is chemical fibre and/or natural fabric, patent has exemplified wood pulp fibre and polyster fibre, soybean fiber with wash fiber, bamboo fibre and milk fibre, four kinds of combinations of viscose and cotton fiber, in four kinds of combinations that this patent exemplifies, only the combination of bamboo fibre and milk fibre has the good feature of environmental protection.But because milk fibre is animal protein fibre and needs to separate, purify, obtain spinning solution with polyacrylonitrile blended, crosslinked, grafting through dehydration, de-oiling, degreasing, therefore, cost is higher.
And for example publication number CN101352942A provides " total biological degradation nonwoven cloth for medical treatment/industry and production technology thereof ", and it is to be made of wood pulp fiber layer spunlace non-woven cloth base cloth layer, and the material of spunlace non-woven cloth base cloth layer is polyvinyl alcohol (PVA).Because vinal obtains through formaldehyde treated, and polyvinyl alcohol therefore not only make fine process complicated, and cost is higher originally as organic compound.
Publication number CN101220534A introduces for another example " a kind of full-biological degradation nonwoven cloth material ", this patent is take carbon dioxide-ethylene oxide copolymer or carbon dioxide-epoxy propane copolymer as basic material, add biodegradable material such as PLA or poly butyric ester, this patent scheme does not have referential technical meaning for biological fiber Wiping material and preparation thereof, specifically can walk to the 6th page for the 5th page the 10th referring to the specification of this patent.
In above-mentioned patent documentation, only mentioned PLA by CN101220534A, PLA is a kind of biodegradation material, made by the starch material that reproducible plant such as corn extract, and then can not exerted an influence to soil and water system because of discarded causing after making articles by the acid fiber by polylactic that PLA is made, because it can be decomposed into carbon dioxide and water through microbial action, even can not distribute toxic and harmful when burning, can not pollute, so acid fiber by polylactic is a kind of ecological fiber of sustainable development.In addition, acid fiber by polylactic has good mechanical and physical performance, ultimate attainment drapability, excellent slipping, natural bacteriostatic and desirable brute force.But because PLA itself does not absorb water, the water absorbing properties extreme difference of the Wiping material of therefore being made by pure acid fiber by polylactic, and whether the excellence of water absorbing properties considers the Wiping material important indicator exactly.Perhaps due to the poor shortcoming of PLA water imbibition, thereby limited to a certain extent its application in the production wipe product.Therefore, how will be combined with its biological fiber with rational specification (such as length), proportioning and fiber number etc. by the acid fiber by polylactic that PLA obtains, use the problem that is extended to the Wiping material field in order to the water absorbing properties of its shortcoming is effectively made up and suffer from for a long time industry, and expectation has breakthrough, but, be showed no all corresponding technology enlightenments that has in published patent and non-patent literature up to now.In addition, acid fiber by polylactic is mixed mutually with other biological fiber and the technique of utilizing papermaking and on-woven technology to help mutually to prepare Wiping material be also that industry is paid close attention to, still, so far equally there are no relevant report.
In view of above-mentioned prior art, the applicant has done long-term and useful exploration and trial, has finally formed technical scheme described below, and has taked the experiment under strict secrecy provision to show it is practicable through the applicant.
Summary of the invention
Top priority of the present invention is to provide a kind of mechanical and physical performance of the excellence that helps to utilize acid fiber by polylactic and is conducive to rationally make up the poor shortcoming of acid fiber by polylactic water absorbing properties and uses and make acid fiber by polylactic be extended to Clean-wipe product and can be degradable to embody relatively cheap and the degradable biological fiber Wiping material environmental protection effect after discarded.
Another task of the present invention is to provide a kind of preparation method of degradable biological fiber Wiping material, and the method can with paper technology and the on-woven technology is double is held and uses and use comprehensive embodiment of the described technique effect that ensures degradable biological fiber Wiping material.
For top priority of the present invention is completed in embodiment, technical scheme provided by the invention is: a kind of degradable biological fiber Wiping material, its composition by mass percent is: the cellulosic pulp fibers 5-95% that the dregs of rice are tabular, acid fiber by polylactic 95-5%, the length of cellulosic pulp fibers is 1-12 ㎜, fineness is greater than 800 orders, the length of acid fiber by polylactic is 15-60 ㎜, fiber number is 0.7-4dtex, and crimpness is 5-25/inch, and oil applying rate is 0.05-0.5%.
In a specific embodiment of the present invention, described cellulosic pulp fibers is wood pulp fibre, bamboo pulp fiber or straw pulp fiber.
Complete another task of the present invention for embodiment, technical scheme provided by the invention is: a kind of preparation method of degradable biological fiber Wiping material comprises the following steps:
A) raw material is prepared, choose the tabular cellulosic pulp fibers 5-95% of the dregs of rice by mass percent, acid fiber by polylactic 95-5%, the length of cellulosic pulp fibers is 1-12 ㎜, fineness is greater than 800 orders, and the length of acid fiber by polylactic is 15-60 ㎜, and fiber number is 0.7-4 dtex, crimpness is 5-25/inch, and oil applying rate is 0.05-0.5%;
B) produce the acid fiber by polylactic net, will be by steps A) acid fiber by polylactic that obtains inputs the carding machine carding by air pressure cotton box after by the opener shredding, and the rotating speed of controlling the rotating speed of the licker-in of carding machine, the cover plate of controlling carding machine and the gap between cylinder and controlling cylinder, obtain the acid fiber by polylactic web, the acid fiber by polylactic web is introduced water thorn pre-pricking machine and is carried out pre-water thorn through the clamping of clamping curtain and after prewetting, obtain netted mutual entanglement structure and be the acid fiber by polylactic net of hygrometric state;
C) produce the cellulosic pulp fibers net, first will be by steps A) the tabular cellulosic pulp fibers of the dregs of rice that obtains pulverizes by hydrabrusher and introduces through pipeline and hold stock tank, the concentration of the cellulosic pulp fibers in stock tank is held in control, obtain slurry, then to the slurry defibrination, the fiber in slurry is discongested by fiberizer, sub-wire and brooming, and the beating degree of the cellulose paste after the control defibrination, then slurry is transported to and kowtowed after-bay and destroy the forebay, dilute through water again, and control the online concentration of the slurry after dilution, delivering to head box after dilution is shaped and aspirates dehydration, obtain the cellulosic pulp fibers net,
D) folded net and water thorn, will be by step C) the cellulosic pulp fibers net that obtains is superimposed on by step B under travel condition) that obtain and acid fiber by polylactic that be in equally travel condition is on the net or again at the cellulosic pulp fibers acid fiber by polylactic net that superposes on the net, and advance towards spun-laced machine with identical gait of march, carry out the water thorn and make cellulosic pulp fibers plant in the acid fiber by polylactic net and embedding and entanglement occur with it to hook by spun-laced machine, and control the water thorn road number of spun-laced machine water thorn and the pressure of water pricker, obtain the spun laced fabric of hygrometric state;
E) oven dry will be by step D) spun laced fabric of the hygrometric state that obtains introduces the ironer mangle, goes out ironer and introduces baking oven and dry, and goes out baking oven and rolling, obtains degradable biological fiber Wiping material.
The grammes per square metre of the acid fiber by polylactic net in another specific embodiment of the present invention, steps A) is 20-50g/ ㎡, and moisture content is 20-30%.
The licker-in rotating speed of the control carding machine in another specific embodiment of the present invention, step B) is that the licker-in rotating speed is controlled to be 850-950r/min; The cover plate of described control carding machine and the spacing between cylinder are that spacing is controlled to be 0.3-0.4 ㎜; The rotating speed of described control cylinder is that the rotating speed with cylinder is controlled to be 950-1100r/min.
In another specific embodiment of the present invention, step C) concentration that the cellulosic pulp fibers in stock tank is held in the control described in is that concentration is controlled to be 2-3%; The beating degree of the cellulose paste after described control defibrination is that beating degree is controlled to be 15-18 ° of SR; The online concentration of the slurry after described control dilution is that online concentration is controlled to be 0.2-0.3%.
Also have a specific embodiment of the present invention, step D) described in the water thorn road number of control spun-laced machine water thorn be water to be stung numerical control be made as the 3-7 road; The pressure of described control water pricker is that pressure is controlled to be 2.5-10MPa.
More of the present invention and in specific embodiment, step e) described in, the temperature of oven dry is 120-135 ℃, and the gait of march of the spun laced fabric of hygrometric state is 60-70m/min.
In of the present invention and then specific embodiment, described oven dry is that hot blast penetrates oven dry and/or roller drying oven dry.
Technical scheme provided by the invention is due to acid fiber by polylactic and cellulosic pulp fibers are made up, thereby can embody acid fiber by polylactic such as desirable mechanical and physical performance, ultimate attainment drapability, excellent slipping, natural bacteriostatic and good intensity, can make up again the drawback of acid fiber by polylactic water imbibition shortcoming and can make compost treatment after discarded and harmless to environment; Owing to making up that the pliability of the cellulosic pulp fibers with excellent soaking effect is poor, intensity is low and easily fall the shortcoming of bits by acid fiber by polylactic, thereby both embodied that cost is low, intensity is high, water absorbing properties is good, softly and phozy fallen the strong points such as bits, embodied again economic cheap effect.
The specific embodiment
Embodiment 1:
A) raw material is prepared, choose the tabular cellulosic pulp fibers of the dregs of rice 50% by mass percent, the raw material of the cellulosic pulp fibers that these dregs of rice are tabular is that length 12 ㎜ and fineness are greater than the softwood pulp fiber of 900 orders (namely crossing 900 purposes sieves), choose acid fiber by polylactic 50% by mass percent, the length of this acid fiber by polylactic is 38 ㎜, fiber number is 2.2 dtex, and crimpness is that 12/inch (12 of per inch) and oil applying rate are 0.05%, obtains raw material;
B) produce the acid fiber by polylactic net, will be by steps A) acid fiber by polylactic that obtains is by the opener shredding that belongs to on-woven machinery category, input the carding machine carding by air pressure cotton box after shredding, the upper wind pressure of air pressure cotton box is 50Pa, lower wind pressure is 7Pa, carding machine licker-in rotating speed is controlled to be 900r/min, the cover plate of carding machine and the gap between cylinder are that spacing is controlled to be 0.35 ㎜, the rotating speed of cylinder is controlled to be 1050r/min, obtain the acid fiber by polylactic web, the acid fiber by polylactic web is introduced water thorn pre-pricking machine and is carried out pre-water thorn through the clamping of clamping curtain and after prewetting, obtain netted mutual entanglement structure and grammes per square metre be that 40g/ ㎡ and moisture content are the acid fiber by polylactic net of 25% hygrometric state, wherein: the jet pressure of the water jet of water thorn pre-pricking machine is that No. 1 water jet is 3.5MPa, No. 2 water jets are 4MPa, No. 3 water jets are 4.5MPa,
C) produce the cellulosic pulp fibers net, first will be by steps A) the 900 purpose needlebush pulp plates that obtain are by hydrabrusher size degradation (namely pulverizing) and introduce through pipeline and hold stock tank, the concentration of holding the cellulosic pulp fibers in stock tank is 2%, obtain slurry, the mass percent concentration that namely obtains cellulosic pulp fibers is 2% slurry, then by fiberizer to slurry defibrination 150min, fiber in slurry is discongested, sub-wire and brooming, the beating degree of the cellulose paste after defibrination is 15 ° of SR, then transport to and kowtow after-bay and destroy the forebay, online concentration (mass percent concentration) with slurry is diluted to 0.24% again, delivering to head box after dilution is shaped and aspirates dehydration, moisture control after the suction dehydration is 70%, obtaining grammes per square metre is the cellulosic pulp fibers net of 100g/ ㎡, namely obtain softwood pulp pulp fibers net,
D) folded net and water thorn, will be by step C) the cellulosic pulp fibers net that obtains is superimposed on by step B under travel condition) that obtain and acid fiber by polylactic that be in equally travel condition is online, and advance towards spun-laced machine (i.e. main spun-laced machine) with identical gait of march, carry out the water thorn and make cellulosic pulp fibers plant in the acid fiber by polylactic net and embedding and entanglement occur with it to hook by spun-laced machine, obtain the spun laced fabric of hygrometric state, it is 6 that the water of spun-laced machine stings the road number, the jet pressure of the water jet of described 6 water thorn road number is respectively 2.5MPa, 4MPa, 4.5MPa, 6MPa, 7MPa and 6MPa,
E) oven dry, will be by step D) spun laced fabric of the hygrometric state that obtains introduces the ironer mangle, going out ironer introduces baking oven and carries out hot blast penetrate oven dry under 125 ℃, the gait of march of the spun laced fabric of hygrometric state is 60m/min, go out after baking oven and rolling, obtaining final grammes per square metre is the degradable biological fiber Wiping material of 60g/ ㎡.
Embodiment 2:
A) raw material is prepared, choose the tabular cellulosic pulp fibers of the dregs of rice 20% by mass percent, the raw material of the cellulosic pulp fibers that these dregs of rice are tabular is that length 1 ㎜ and fineness are greater than the bamboo pulp fiber of 1000 orders (namely crossing 1000 purposes sieves), choose acid fiber by polylactic 80% by mass percent, the length of this acid fiber by polylactic is 60 ㎜, fiber number is 0.7 dtex, and crimpness is that 25/inch (25 of per inch) and oil applying rate are 0.5%, obtains raw material;
B) produce the acid fiber by polylactic net, will be by steps A) acid fiber by polylactic that obtains is by the opener shredding that belongs to on-woven machinery category, input the carding machine carding by air pressure cotton box after shredding, the upper wind pressure of air pressure cotton box is 50Pa, lower wind pressure is 7Pa, carding machine licker-in rotating speed is controlled to be 950r/min, the cover plate of carding machine and the gap between cylinder are that spacing is controlled to be 0.3 ㎜, the rotating speed of cylinder is controlled to be 950r/min, obtain the acid fiber by polylactic web, the acid fiber by polylactic web is introduced water thorn pre-pricking machine and is carried out pre-water thorn through the clamping of clamping curtain and after prewetting, obtain netted mutual entanglement structure and grammes per square metre be that 50g/ ㎡ and moisture content are the acid fiber by polylactic net of 30% hygrometric state, wherein: the jet pressure of the water jet of water thorn pre-pricking machine is that No. 1 water jet is 3.5MPa, No. 2 water jets are 4MPa, No. 3 water jets are 4.5MPa,
C) produce the cellulosic pulp fibers net, first will be by steps A) the 1000 purpose bamboo pulp plates that obtain are by hydrabrusher size degradation (namely pulverizing) and introduce through pipeline and hold stock tank, the concentration of holding the cellulosic pulp fibers in stock tank is 3%, obtain slurry, the mass percent concentration that namely obtains cellulosic pulp fibers is 3% slurry, then by fiberizer to slurry defibrination 120min, fiber in slurry is discongested, sub-wire and brooming, the beating degree of the cellulose paste after defibrination is 18 ° of SR, then transport to and kowtow after-bay and destroy the forebay, online concentration (mass percent concentration) with slurry is diluted to 0.3% again, delivering to head box after dilution is shaped and aspirates dehydration, moisture control after the suction dehydration is 65%, obtaining grammes per square metre is the cellulosic pulp fibers net of 50g/ ㎡, namely obtain bamboo pulp pulp fibers net,
D) folded net and water thorn, will be by step C) the cellulosic pulp fibers net that obtains is superimposed on by step B under travel condition) that obtain and acid fiber by polylactic that be in equally travel condition is online, and simultaneously stacked equally by step B below the cellulosic pulp fibers net) the acid fiber by polylactic net that obtains (middlely is the cellulosic pulp fibers net, be the acid fiber by polylactic net and both sides are upper and lower surface), and advance towards spun-laced machine (i.e. main spun-laced machine) with identical gait of march, carry out the water thorn and make cellulosic pulp fibers plant in the acid fiber by polylactic net and embedding and entanglement occur with it to hook by spun-laced machine, obtain the spun laced fabric of hygrometric state, it is 7 that the water of spun-laced machine stings the road number, the water thorn jet pressure of described 7 water thorn road number is respectively 2.5MPa, 4.5MPa, 5MPa, 6MPa, 7MPa, 7MPa and 6MPa,
E) oven dry, will be by step D) spun laced fabric of the hygrometric state that obtains introduces the ironer mangle, going out ironer introduces roller drier and carries out hot blast penetrate oven dry under 135 ℃, the gait of march of the spun laced fabric of hygrometric state is 70m/min, go out after roller drier and rolling, obtaining final grammes per square metre is the degradable biological fiber Wiping material of 88g/ ㎡.
Embodiment 3:
A) raw material is prepared, choose the tabular cellulosic pulp fibers of the dregs of rice 80% by mass percent, the raw material of the cellulosic pulp fibers that these dregs of rice are tabular is that length 6.5 ㎜ and fineness are greater than the straw pulp fiber of 950 orders (namely crossing 950 purposes sieves), choose acid fiber by polylactic 20% by mass percent, the length of this acid fiber by polylactic is 15 ㎜, fiber number is 4dtex, and crimpness is that 5/inch (5 of per inch) and oil applying rate are 0.25%, obtains raw material;
B) produce the acid fiber by polylactic net, will be by steps A) acid fiber by polylactic that obtains is by the opener shredding that belongs to on-woven machinery category, input the carding machine carding by air pressure cotton box after shredding, the upper wind pressure of air pressure cotton box is 50Pa, lower wind pressure is 7Pa, carding machine licker-in rotating speed is controlled to be 850r/min, the cover plate of carding machine and the gap between cylinder are that spacing is controlled to be 0.4 ㎜, the rotating speed of cylinder is controlled to be 1100r/min, obtain the acid fiber by polylactic web, the acid fiber by polylactic web is introduced water thorn pre-pricking machine and is carried out pre-water thorn through the clamping of clamping curtain and after prewetting, obtain netted mutual entanglement structure and grammes per square metre be that 20g/ ㎡ and moisture content are the acid fiber by polylactic net of 20% hygrometric state, wherein: the jet pressure of the water jet of water thorn pre-pricking machine is that No. 1 water jet is 3.5MPa, No. 2 water jets are 4MPa, No. 3 water jets are 4.5MPa,
C) produce the cellulosic pulp fibers net, first will be by steps A) the 950 purpose straw pulp plates that obtain are by hydrabrusher size degradation (namely pulverizing) and introduce through pipeline and hold stock tank, the concentration of holding the cellulosic pulp fibers in stock tank is 2.5%, obtain slurry, the mass percent concentration that namely obtains cellulosic pulp fibers is 2.5% slurry, then by fiberizer to slurry defibrination 160min, fiber in slurry is discongested, sub-wire and brooming, the beating degree of the cellulose paste after defibrination is 16.5 ° of SR, then transport to and kowtow after-bay and destroy the forebay, online concentration (mass percent concentration) with slurry is diluted to 0.2% again, delivering to head box after dilution is shaped and aspirates dehydration, moisture control after the suction dehydration is 68%, obtaining grammes per square metre is the cellulosic pulp fibers net of 200g/ ㎡, namely obtain straw pulp pulp fibers net,
D) folded net and water thorn, will be by step C) the cellulosic pulp fibers net that obtains is superimposed on by step B under travel condition) that obtain and acid fiber by polylactic that be in equally travel condition is online, and advance towards having spun-laced machine (i.e. main spun-laced machine) with identical gait of march, carry out the water thorn and make cellulosic pulp fibers plant in the acid fiber by polylactic net and embedding and entanglement occur with it to hook by spun-laced machine, obtain the spun laced fabric of hygrometric state, it is 3 that the water of spun-laced machine stings the road number, and the water thorn jet pressure that described 3 water sting the road number is respectively 6MPa, 7MPa and 6MPa;
E) oven dry, will be by step D) spun laced fabric of the hygrometric state that obtains introduces the ironer mangle, going out ironer introduces baking oven and carries out hot blast penetrate oven dry under 120 ℃, introduce roller drier 120 ℃ of dryings after going out baking oven, in dry run, the gait of march of the spun laced fabric of hygrometric state is 65m/min, goes out after baking oven and rolling, and obtaining final grammes per square metre is the degradable biological fiber Wiping material of 80g/ ㎡.
The degradable biological fiber Wiping material and the known bonded fabric Wiping material that are obtained by above-described embodiment 1 to 3 have the technique effect shown in following table through contrast test.
Claims (9)
1. degradable biological fiber Wiping material, it is characterized in that its composition by mass percent is: the cellulosic pulp fibers 5-95% that the dregs of rice are tabular, acid fiber by polylactic 95-5%, the length of cellulosic pulp fibers is 1-12 ㎜, fineness is greater than 800 orders, and the length of acid fiber by polylactic is 15-60 ㎜, and fiber number is 0.7-4dtex, crimpness is 5-25/inch, and oil applying rate is 0.05-0.5%.
2. degradable biological fiber Wiping material according to claim 1, is characterized in that described cellulosic pulp fibers is wood pulp fibre, bamboo pulp fiber or straw pulp fiber.
3. the preparation method of a degradable biological fiber Wiping material as claimed in claim 1 is characterized in that comprising the following steps:
A) raw material is prepared, choose the tabular cellulosic pulp fibers 5-95% of the dregs of rice by mass percent, acid fiber by polylactic 95-5%, the length of cellulosic pulp fibers is 1-12 ㎜, fineness is greater than 800 orders, and the length of acid fiber by polylactic is 15-60 ㎜, and fiber number is 0.7-4 dtex, crimpness is 5-25/inch, and oil applying rate is 0.05-0.5%;
B) produce the acid fiber by polylactic net, will be by steps A) acid fiber by polylactic that obtains inputs the carding machine carding by air pressure cotton box after by the opener shredding, and the rotating speed of controlling the rotating speed of the licker-in of carding machine, the cover plate of controlling carding machine and the gap between cylinder and controlling cylinder, obtain the acid fiber by polylactic web, the acid fiber by polylactic web is introduced water thorn pre-pricking machine and is carried out pre-water thorn through the clamping of clamping curtain and after prewetting, obtain netted mutual entanglement structure and be the acid fiber by polylactic net of hygrometric state;
C) produce the cellulosic pulp fibers net, first will be by steps A) the tabular cellulosic pulp fibers of the dregs of rice that obtains pulverizes by hydrabrusher and introduces through pipeline and hold stock tank, the concentration of the cellulosic pulp fibers in stock tank is held in control, obtain slurry, then to the slurry defibrination, the fiber in slurry is discongested by fiberizer, sub-wire and brooming, and the beating degree of the cellulose paste after the control defibrination, then slurry is transported to and kowtowed after-bay and destroy the forebay, dilute through water again, and control the online concentration of the slurry after dilution, delivering to head box after dilution is shaped and aspirates dehydration, obtain the cellulosic pulp fibers net,
D) folded net and water thorn, will be by step C) the cellulosic pulp fibers net that obtains is superimposed on by step B under travel condition) that obtain and acid fiber by polylactic that be in equally travel condition is on the net or again at the cellulosic pulp fibers acid fiber by polylactic net that superposes on the net, and advance towards spun-laced machine with identical gait of march, carry out the water thorn and make cellulosic pulp fibers plant in the acid fiber by polylactic net and embedding and entanglement occur with it to hook by spun-laced machine, and control the water thorn road number of spun-laced machine water thorn and the pressure of water pricker, obtain the spun laced fabric of hygrometric state;
E) oven dry will be by step D) spun laced fabric of the hygrometric state that obtains introduces the ironer mangle, goes out ironer and introduces baking oven and dry, and goes out baking oven and rolling, obtains degradable biological fiber Wiping material.
4. the preparation method of degradable biological fiber Wiping material according to claim 3, is characterized in that steps A) described in the grammes per square metre of acid fiber by polylactic net be 20-50g/ ㎡, moisture content is 20-30%.
5. the preparation method of degradable biological fiber Wiping material according to claim 3, is characterized in that step B) described in the licker-in rotating speed of control carding machine be that the licker-in rotating speed is controlled to be 850-950r/min; The cover plate of described control carding machine and the spacing between cylinder are that spacing is controlled to be 0.3-0.4 ㎜; The rotating speed of described control cylinder is that the rotating speed with cylinder is controlled to be 950-1100r/min.
6. the preparation method of degradable biological fiber Wiping material according to claim 3, is characterized in that step C) described in the control concentration of holding the cellulosic pulp fibers in stock tank be that concentration is controlled to be 2-3%; The beating degree of the cellulose paste after described control defibrination is that beating degree is controlled to be 15-18 ° of SR; The online concentration of the slurry after described control dilution is that online concentration is controlled to be 0.2-0.3%.
7. the preparation method of degradable biological fiber Wiping material according to claim 3, is characterized in that step D) described in the water thorn road number of control spun-laced machine water thorn be water to be stung numerical control be made as the 3-7 road; The pressure of described control water pricker is that pressure is controlled to be 2.5-10MPa.
8. the preparation method of degradable biological fiber Wiping material according to claim 3, is characterized in that step e) described in the oven dry temperature be 120-135 ℃, the gait of march of the spun laced fabric of hygrometric state is 60-70m/min.
9. the preparation method of according to claim 4 or 8 described degradable biological fiber Wiping materials, is characterized in that described oven dry is that hot blast penetrates oven dry and/or roller drying oven dry.
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| CN109537354A (en) * | 2018-11-28 | 2019-03-29 | 山东昌诺新材料科技有限公司 | A kind of bamboo fibre and wood pulp spun lacing composite cleaning cloth and preparation method thereof |
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