CN102691169B - China-hemp spunlaced non-woven fabric and preparation method thereof - Google Patents
China-hemp spunlaced non-woven fabric and preparation method thereof Download PDFInfo
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- CN102691169B CN102691169B CN201210142517.5A CN201210142517A CN102691169B CN 102691169 B CN102691169 B CN 102691169B CN 201210142517 A CN201210142517 A CN 201210142517A CN 102691169 B CN102691169 B CN 102691169B
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Abstract
The invention discloses a China-hemp spunlaced non-woven fabric and a preparation method of the fabric. The preparation method comprises the steps of mixing China-hemp fibers and at least one of long stapled cotton fibers and viscose, and then carrying out the steps of coarse opening, fine opening, air pressure cotton feeding, carding, lapping, drafting, spunlace and drying in sequence so as to obtain the China-hemp spunlaced non-woven fabric. The China-hemp spunlaced non-woven fabric product, provided by the invention, has the advantages of good physical property, better air permeability, smaller thickness and quantification, larger breaking force and better wear resistance, and is suitable for being used as liquid filtration, oil filtration and wiping articles.
Description
Technical field
The present invention relates to a kind of Chinese fiber crops hydro-entangled non-woven fabric and preparation method thereof.
Background technology
Through the market survey in early stage, do in the technology of non-weaving cloth at the existing fiber that utilizes, a kind of is the paper technology exploitation material utilizing wet-laying, as Populus deltoides slurry filter paper and glass fiber filter paper, another technology is exactly adopt machinery to become the water acupuncture manipulation in network method and needle point method to produce non-weaving cloth.When utilizing glass fibre to do filtering material, first glass fibre is cut into isometric 3mm, then adopt water as medium, wet laying process is utilized to produce glass fiber filter material, the maximum feature of glass filter paper be soft, aperture is little, filtering accuracy is high, thickness and quantitative also less, has good material property and application.
Chinese fiber crops, be also called hemp, that the mankind are the earliest for the natural fabric of fabric, china-hemp fibers has many superperformance features, such as, and the performance such as soft comfortable, clear nice and cool, antibiotic health care thoroughly, environmental protection, uvioresistant, therefore, can consider to adopt china-hemp fibers and long-staple cotton fiber, utilize existing non-interlaced fabric equipment and technology, exploitation Chinese fiber crops hydro-entangled non-woven fabric.Utilizing china-hemp fibers to produce hydro-entangled non-woven fabric, is also the expansion to Chinese fiber crops Application Areas and in-depth.
Summary of the invention
The object of this invention is to provide a kind of Chinese fiber crops hydro-entangled non-woven fabric and preparation method thereof.
The preparation method of a kind of Chinese fiber crops hydro-entangled non-woven fabric provided by the present invention, comprises the steps:
China-hemp fibers is mixed with at least one in long-staple cotton fiber and viscose, then feeds cotton, combing, lapping, drawing-off, water thorn and drying steps namely obtain described Chinese fiber crops hydro-entangled non-woven fabric through thick shredding, smart shredding, air pressure successively.
In above-mentioned preparation method, the average length of described china-hemp fibers can be 8 ~ 92mm, specifically can be 27.88mm or 90mm, and fineness can be 3.35 ~ 19.55 μm, specifically can be 3.35 μm or 14.31 μm; The average length of described long-staple cotton fiber and viscose can be 20 ~ 51mm, specifically can be 34.12mm or 34.06mm, and fineness can be 10.12 ~ 17.92 μm, specifically can be 11.645 μm or 14.75 μm.
In above-mentioned preparation method, in described china-hemp fibers and long-staple cotton fiber and viscose, the ratio of quality and the number of copies of at least one can be 4:(1 ~ 3), specifically can be 3:2 or 4:1.
In above-mentioned preparation method, before described thick shredding step, described method also comprises the step of described china-hemp fibers, long-staple cotton fiber and/or viscose being carried out respectively to artificial shredding and artificial removal of impurities, to guarantee follow-up uniform quality into the net and good non-weaving cloth; Then the china-hemp fibers through artificial shredding and artificial removal of impurities is mixed with at least one in long-staple cotton fiber and viscose; To carry out adding wet process, in order to prevent electrostatic and flyings in described mixed process.
In above-mentioned preparation method, after described thick shredding step, described method also comprises and is added to the step of carrying out secondary shredding in the cotton blender machine of large storehouse to the blended fiber after thick shredding, mainly utilizes the wind-force effect of blower fan that blended fiber is carried out second time shredding.
In above-mentioned preparation method, described combing step is carried out in the mixed and disorderly carding machine of two pass husband, mainly the fiber that the shredding obtained mixes is carded to single fiber condition, in order to better carry out lapping, meanwhile, be also fibre web in order to form three-dimensional state, disordered arrangements.
In above-mentioned preparation method, described lapping process adopts the mode of cross lapping, and which can improve the operating efficiency of carding machine, increases the width of product, thus the applicability of product is significantly improved.
In above-mentioned preparation method, described drafting step is carried out in 3 draw zones, drafting multiple in each draw zone all can be 2 ~ 6, as 2 or 5.1, mainly in order to originally in transversely arranged fibre web to longitudinal arrangement, formed preferably in length and breadth to powerful requirement, thus meet the powerful requirement in application.
In above-mentioned preparation method, described method also comprises carries out dry step to described Chinese fiber crops hydro-entangled non-woven fabric, due in water thorn step, there is the existence of large quantity of moisture, so need to carry out drying, remove unnecessary moisture, make material can be easy to use, meet instructions for use.
In above-mentioned preparation method, described water thorn step can be carried out in plain net spun-laced machine; Each plain net spun-laced machine can comprise 2 water jets.
In above-mentioned preparation method, described method comprises 2 road water thorn steps; In 1st road water thorn step, the pressure of the 1st water jet can be 10 ~ 20bar, specifically can be 10bar or 15bar, and the pressure of the 2nd water jet can be 65 ~ 70bar, specifically can be 65bar or 70bar; In 2nd road water thorn step, the pressure of the 1st water jet can be 10 ~ 20bar, specifically can be 15bar or 20bar, and the pressure of the 2nd water jet can be 80 ~ 90bar, specifically can be 80bar or 90bar.
The present invention still further provides the Chinese fiber crops hydro-entangled non-woven fabric prepared by said method; Described hydro-entangled non-woven fabric be quantitatively 130 ~ 150g/m
2.
The invention provides a kind of hydro-entangled non-woven fabric utilizing china-hemp fibers to produce and preparation method thereof, the physical property of hydro-entangled non-woven fabric product prepared by the present invention is good, gas permeability is also better, thickness is with quantitatively less, ultimate strength is larger, ABRASION RESISTANCE is also better, is suitable as liquid filtering, oil filters, Wiping article.
Accompanying drawing explanation
Fig. 1 is the flow chart that the present invention prepares the method for Chinese fiber crops hydro-entangled non-woven fabric.
Detailed description of the invention
The experimental technique used in following embodiment if no special instructions, is conventional method.
Material used in following embodiment, reagent etc., if no special instructions, all can obtain from commercial channels.
China-hemp fibers used in following embodiment is purchased from China-Hemp Industrial Investments and Holdings Co., Ltd.; Viscose used and long-staple cotton fiber are purchased from Shandong Hua Le group.
Embodiment 1, prepare the Chinese fiber crops hydro-entangled non-woven fabric
The flow chart of the present embodiment as shown in Figure 1.
(1) Weaving prepartion: select china-hemp fibers and long-staple cotton fiber, china-hemp fibers average length is 27.88mm, long-staple cotton fiber average length is 34.12mm, china-hemp fibers average fineness is 14.31 μm, long-staple cotton fiber average fineness is 14.75 μm, and when sample is produced, china-hemp fibers is 6KG, and long-staple cotton is 4KG, so blending ratio is 3:2, be initially quantitatively predefined for 150g/m
2.
(2) opening picking: first china-hemp fibers and long-staple cotton fiber are carried out artificial shredding, first tears apart the fiber bag hand of bag-like that has in china-hemp fibers and long-staple cotton fiber respectively, tears evenly as far as possible and accomplishes not damage fiber; Color due to china-hemp fibers is light yellow, find that impurity is wherein less, substantially do not have, feel is also soft, and the impurity of long-staple cotton fiber is more, find wherein there is the impurity such as branches and leaves, cottonseed, broken seed, fiber mote and hard goods in the process of manual shredding, need to get rid of timely, guarantee uniform quality into the net and good non-weaving cloth; Can mix after removal impurity, first manual mixing, mixes as far as possible, and this mainly carries out artificial shredding in the cotton storage tank of a rectangle with defeated lace curtaining, in opening processes, need dewing, in order to prevent electrostatic and flyings; Mixed fiber is added in thick opener and mixes, and make manual there is no the large cotton-wool of shredding and fiber block dissociation, mix, fully shredding; Fiber after thick shredding starts to enter large storehouse cotton blender machine, and the capacity of Chu Miancang is comparatively large, mainly utilizes the wind-force effect of blower fan that fiber is carried out second time shredding; Following fiber starts to enter refined opener, mainly compares meticulous shredding to fiber, the fiber opening of pre-shredding is become fubril shape or bundle fiber shape, for combing processing below and one-tenth are netted ready.
(3) combing: utilize constant volume type air pressure feed cotton machine by blended fiber obtained above evenly, stable being sent in the mixed and disorderly carding machine of two pass husband carry out combing; Adopt the mixed and disorderly roller of two pass husband to carry out combing, mainly the fiber that preceding processes shredding mixes being carded to single fiber condition, in order to better carry out staggered form lapping, meanwhile, is also the fibre web in order to form three-dimensional state, disordered arrangements.
(4) net is become: the mode adopting cross lapping;
The control that fibre web is quantitative: in net process, that just started expection is quantitatively 150g/m
2, just starting in laid process, is quantitatively 9g/m through what weigh each fibre web
2, so the lapping number of plies adopted is 15, so now the quantitative of 15 fibre webs is 135g/m
2, after quantitatively can increase in water thorn process again, so adopt 15 lapping numbers of plies.
(5) drawing-off: adopt three cylinders, form three draw zones, the drafting multiple of each draw zone is 5.1, mainly in order to originally in transversely arranged fibre web to longitudinal arrangement, formed preferably in length and breadth to powerful requirement, thus meet the powerful requirement in application.
(6) water thorn: adopt flat screen type spun-laced machine, comprise two water jets; Adopt twice water jet process, wherein, in the 1st road water jet process, the pressure of the 1st water jet is 15bar, and the pressure of the 2nd water jet is 70bar; In 2nd road water jet process, the pressure of the 1st water jet is 15bar, and the pressure of the 2nd water jet is 90bar.
(7) dry: due in water thorn process, to have the existence of large quantity of moisture, so need to carry out drying, remove unnecessary moisture, make material can be easy to use, meet instructions for use, wherein controlling dry temperature be 20 DEG C.
Properties of product are tested:
The main performance of Chinese fiber crops hydro-entangled non-woven fabric prepared by this embodiment is: thickness: 1.173mm, quantitatively: 152.73g/m
2air penetrability: 88.5864mm/s, the physical performance index of its longitudinal direction is: ultimate strength: 247.52N, extension at break: 65.663mm, elongation at break: 328.319%, rupture time: 39.397S, disconnected de-powerful: 96.62N, disconnected de-percentage elongation: 344.589%, disconnected de-elongation: 68.917mm, work to break: 8.912J; Horizontal physical performance index is: ultimate strength: 152.65N, extension at break: 103.629mm, elongation at break: 518.149%, rupture time: 62.177s, disconnected de-powerful: 60.274N, disconnected de-percentage elongation: 542.699%, disconnected de-elongation: 108.539mm, work to break: 8.067J.
Test process and result as follows:
(1) thickness measuring,
Tester: YG141N type digital textile thickness gauge
Unit is mm, and ballast is 100g, and test result is as shown in table 1.
The thickness measuring result of table 1 Chinese fiber crops hydro-entangled non-woven fabric
(2) quantitative test
Tester: electronic balance, unit is g/m
2, test result is as shown in table 2.
The quantitative test result of table 2 Chinese fiber crops hydro-entangled non-woven fabric
(3) air penetrability test
The computermatic air permeability tester of tester: YG461E, unit is mm/s,
Test condition: sample pressure reduction is 100Pa, 3# nozzle, Area of Sample 20cm
2, test result is as shown in table 3.
The air penetrability test result of table 3 Chinese fiber crops hydro-entangled non-woven fabric
(4) powerful and elongation test
Tester: YG065 tensometer, galley proof method is tested
Test condition: specimen length 20mm, draw speed 100mm/min, pre-tension 100cN.Its longitudinal and horizontal quantitative measurement result is as shown in table 4, table 5, and it is longitudinal, transverses rationality comparative result is as shown in table 6.
Longitudinal quantitative measurement result of table 4 Chinese fiber crops hydro-entangled non-woven fabric
The horizontal physical property test result of table 5 Chinese fiber crops hydro-entangled non-woven fabric
Longitudinal, the transverses rationality comparative result of table 6 Chinese fiber crops hydro-entangled non-woven fabric
Embodiment 2, prepare the Chinese fiber crops hydro-entangled non-woven fabric
Preparation technology is all identical with embodiment 1, and difference is: long-staple cotton fiber is replaced by viscose, and its average length is 34.06mm, and fineness is 11.645 μm; The average length of china-hemp fibers is 90mm, and fineness is 3.35 μm; The ratio of quality and the number of copies of china-hemp fibers and viscose is 4:1; Drafting step is carried out in 3 draw zones, and the drafting multiple in each draw zone is 2; In water thorn step, adopt twice water jet process, wherein, in the 1st road water jet process, the pressure of the 1st water jet is 10bar, and the pressure of the 2nd water jet is 65bar; In 2nd road water jet process, the pressure of the 1st water jet is 20bar, and the pressure of the 2nd water jet is 80bar.
Chinese fiber crops/viscose glue the hydro-entangled non-woven fabric of preparation, the performance of its product as following table 7 ~ table 12, the method for testing of each performance with testing equipment with identical in embodiment 1.
The thickness measuring result of table 7 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric
The quantitative test result of table 8 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric
The air penetrability test result of table 9 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric
Longitudinal quantitative measurement result of table 10 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric
The horizontal physical property test result of table 11 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric
The portraitlandscape physical property of table 12 Chinese fiber crops/viscose glue hydro-entangled non-woven fabric compares
Claims (8)
1. a preparation method for Chinese fiber crops hydro-entangled non-woven fabric, comprises the steps:
China-hemp fibers is mixed with long-staple cotton fiber, then feeds cotton, combing, lapping, drawing-off, water thorn and drying steps namely obtain described Chinese fiber crops hydro-entangled non-woven fabric through thick shredding, smart shredding, air pressure successively;
Described lapping process adopts the mode of cross lapping;
Described water thorn step is carried out in plain net spun-laced machine; Each plain net spun-laced machine comprises 2 water jets;
Described method comprises 2 road water thorn steps; In 1st road water thorn step, the pressure of the 1st water jet is 10bar ~ 20bar, and the pressure of the 2nd water jet is 65bar ~ 70bar; In 2nd road water thorn step, the pressure of the 1st water jet is 10bar ~ 20bar, and the pressure of the 2nd water jet is 80bar ~ 90bar.
2. preparation method according to claim 1, is characterized in that: the average length of described china-hemp fibers is 8mm ~ 92mm, and fineness is 3.35 μm ~ 19.55 μm; The average length of described long-staple cotton fiber is 20mm ~ 51mm, and fineness is 10.12 μm ~ 17.92 μm.
3. preparation method according to claim 1 and 2, is characterized in that: the ratio of quality and the number of copies of described china-hemp fibers and long-staple cotton fiber is 4:(1 ~ 3).
4. preparation method according to claim 1 and 2, is characterized in that: before described thick shredding step, and described method also comprises the step of described china-hemp fibers, long-staple cotton fiber being carried out respectively to artificial shredding and artificial removal of impurities; Then the china-hemp fibers through artificial shredding and artificial removal of impurities is mixed with long-staple cotton fiber; To carry out adding wet process in described mixed process.
5. preparation method according to claim 1 and 2, is characterized in that: after described thick shredding step, and described method also comprises and is added to the step of carrying out secondary shredding in the cotton blender machine of large storehouse to the blended fiber after thick shredding.
6. preparation method according to claim 1 and 2, is characterized in that: described combing step is carried out in the mixed and disorderly carding machine of two pass husband; Described drafting step is carried out in 3 draw zones, and the drafting multiple in each draw zone is 2 ~ 6.
7. preparation method according to claim 1 and 2, is characterized in that: the baking temperature of described drying steps is 20 DEG C ~ 30 DEG C.
8. the Chinese fiber crops hydro-entangled non-woven fabric that in claim 1-7 prepared by arbitrary described method; The quantitative of described hydro-entangled non-woven fabric is 130g/m
2~ 150g/m
2.
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