CN103806220B - A kind of production technology of degradable nonwoven fabric - Google Patents
A kind of production technology of degradable nonwoven fabric Download PDFInfo
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- CN103806220B CN103806220B CN201410055532.5A CN201410055532A CN103806220B CN 103806220 B CN103806220 B CN 103806220B CN 201410055532 A CN201410055532 A CN 201410055532A CN 103806220 B CN103806220 B CN 103806220B
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Abstract
The invention discloses a kind of production technology of degradable nonwoven fabric, comprise following component and each constituent content percentage is: polyvinyl alcohol fibre: 40% ~ 60% and wood pulp fibre: 40% ~ 60% is raw material, mix through shredding, combing disordered wet forming, prewet, just to turn one's coat thorn, the process of Final finishing drying is made, polyvinyl alcohol fibre and wood pulp polyvinyl alcohol fibre combine by the present invention, by the degradable non-weaving cloth that the technique of hydro-entangled non-woven fabric prepares, single wood pulp fibre product flexibility of the prior art can be solved poor, intensity is low and easily go to sticks and staves the shortcoming of slag and so on, the product of the non-weaving cloth that single weaving short fiber can also be avoided to be produced by water jet process, due to rough surface with hygroscopicity is low and nondegradable drawback, the degradable non-weaving cloth of gained has raising flexibility, improve product strength, not easily fall slag, water absorption rate is high, easy degraded.
Description
[technical field]
The present invention relates to technical field prepared by the technical field of non-weaving cloth, particularly degradable nonwoven fabric.
[background technology]
The wood pulp fibre product that single traditional wet laid technique is produced, although there is degradability and be conducive to protection of the environment, but owing to there is flexibility difference, intensity is low and easily go to sticks and staves the shortcoming of slag and so on and be not subject to the favor of people, but, often in the process of processing, add Chemical Felter, although it is low and easily go to sticks and staves the deficiency of slag that binding agent can improve intensity, but as the binding agent of additive, easy generation chemical reaction, impact is formed on the quality stability of product, the product of the non-weaving cloth that single weaving short fiber is produced by water jet process, due to rough surface with hygroscopicity is low and the shortcoming such as non-degradable is treated coldly by people.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, proposes a kind of production technology of degradable nonwoven fabric, can improve flexibility, and improve product strength, not easily fall slag, water absorption rate is high, easily degrades.
For achieving the above object, the present invention proposes a kind of production technology of degradable nonwoven fabric, comprise the following steps successively:
A) fibrous raw material preparation: the polyvinyl alcohol fibre 60 ~ 80wt% and the wood pulp fibre 20 ~ 40wt% that take certain mass percent, wood pulp fibre is any one or a few the mixture in softwood pulp fiber, hardwood pulp fiber, length is 1 ~ 4.08mm, width is 40.9 ~ 54.9 μm, polyvinyl alcohol fibre adopts soluble vinylon fiber long filament, through shredding mixing, obtain preparing fibrous raw material;
B) in comb: adopt straight paving production technology in two comb to carry out carding the fibrous raw material of preparing obtained in a) step, obtain fiber web;
C) prewet: the fiber web obtained in b) step is adopted two net method of clamping, and hydraulic pressure is that 0.5 ~ 60Bar carries out pre-wetted treatment, obtains pre-wet fiber net;
D) water thorn: the pre-wet fiber net obtained in c) step is entered water spine area and adopt cylinder water thorn reinforcement process to reinforce, water jet number is 3 ~ 5, and hydraulic pressure is 60 ~ 250Bar, and process obtains reinforcement fiber web;
E) dewater: adopt vacuum water absorption to dewater the reinforcement fiber web obtained in d) step, vacuum is 16000 ~ 37000Pa, and process obtains dewatered fibrous web;
F) Final finishing: adopt hydro-entangled master finishing technique to carry out Final finishing the dewatered fibrous web obtained in e) step, obtain Final finishing fiber web;
J) dry: adopted by the Final finishing fiber web obtained in f) step drying cylinder formula drying mode to carry out drying, drying temperature is 80 ~ 90 DEG C, and cloth speed is 70 ~ 100m/min, and process obtains degradable nonwoven fabric.
As preferably, polyvinyl alcohol fibre mass percent: 60wt% in described a) step, wood pulp fibre mass percent: 40wt%.
As preferably, the degradable nonwoven fabric grammes per square metre obtained in described j) step is 50g/ ㎡, water absorption rate >=1000%, whiteness >=80%, MD >=50N, CD >=12N.
Beneficial effect of the present invention: polyvinyl alcohol fibre and wood pulp polyvinyl alcohol fibre combine by the present invention, by the degradable non-weaving cloth that the technique of hydro-entangled non-woven fabric prepares, single wood pulp fibre product flexibility of the prior art can be solved poor, intensity is low and easily go to sticks and staves the shortcoming of slag and so on, the product of the non-weaving cloth that single weaving short fiber can also be avoided to be produced by water jet process, due to rough surface with hygroscopicity is low and nondegradable drawback, the degradable non-weaving cloth of gained has raising flexibility, improve product strength, not easily fall slag, water absorption rate is high, easy degraded.
[detailed description of the invention]
The all raw material used in the present invention, can buy from market.
Embodiment one:
Following component and each constituent mass percentage are: polyvinyl alcohol fibre: 50wt% and wood pulp fibre: 50wt% is raw material, this raw material is carried out abundant shredding mixing, by feeding cotton device, raw material is being sent into carding machine process formation fibre web, adopt during carding in two comb and directly spread production technology, gained fibre web is being prewetted, adopt two net clipping, hydraulic pressure is 0.5 ~ 60Bar, the fibre web that compacting is fluffy, discharge the air in fibre web, the energy of water jet effectively can be absorbed after making fibre web enter water spine area, with reinforcing fibre entanglement effect, fibre web after prewetting carry out water lunge row reinforce, adopt cylinder water thorn reinforcement process, described water jet number is 3 ~ 5, hydraulic pressure is 60 ~ 250Bar, carrying out processed, by near for the moisture in fibre web minimum, adopt vacuum water absorption, vacuum is 16000 ~ 37000Pa, enter Final finishing, employing hydro-entangled master arranges, the fibre web drying process of then will reinforce, adopt drying cylinder formula drying mode, drying temperature is 80 ~ 90 DEG C, cloth speed is 70 ~ 100m/min, obtain degradable nonwoven fabric.
Wherein, polyvinyl alcohol fibre adopts water soluble vinylon filament, and wood pulp fibre is any one or a few the mixture in softwood pulp fiber, hardwood pulp fiber, and the length of wood pulp fibre is 1 ~ 4.08mm, and the width of described wood pulp fibre is 40.9 ~ 54.9 μm.
The production technology of a kind of degradable nonwoven fabric of the present invention, its grammes per square metre of the degradable nonwoven fabric obtained is 50g/ ㎡, water absorption rate >=1000%, whiteness >=80%, MD >=50N, CD >=12N.
Embodiment two:
Following component and each constituent mass percentage are: polyvinyl alcohol fibre: 40wt% and wood pulp fibre: 60wt% is raw material, this raw material is carried out abundant shredding mixing, by feeding cotton device, raw material is being sent into carding machine process formation fibre web, adopt during carding in two comb and directly spread production technology, gained fibre web is being prewetted, adopt two net clipping, hydraulic pressure is 0.5 ~ 60Bar, the fibre web that compacting is fluffy, discharge the air in fibre web, the energy of water jet effectively can be absorbed after making fibre web enter water spine area, with reinforcing fibre entanglement effect, fibre web after prewetting carry out water lunge row reinforce, adopt cylinder water thorn reinforcement process, described water jet number is 3 ~ 5, hydraulic pressure is 60 ~ 250Bar, carrying out processed, by near for the moisture in fibre web minimum, adopt vacuum water absorption, vacuum is 16000 ~ 37000Pa, enter Final finishing, employing hydro-entangled master arranges, the fibre web drying process of then will reinforce, adopt drying cylinder formula drying mode, drying temperature is 80 ~ 90 DEG C, cloth speed is 70 ~ 100m/min, obtain degradable nonwoven fabric.
Wherein, polyvinyl alcohol fibre adopts water soluble vinylon filament, and wood pulp fibre is any one or a few the mixture in softwood pulp fiber, hardwood pulp fiber, and the length of wood pulp fibre is 1 ~ 4.08mm, and the width of described wood pulp fibre is 40.9 ~ 54.9 μm.
The production technology of a kind of degradable nonwoven fabric of the present invention, its grammes per square metre of the degradable nonwoven fabric obtained is 45g/ ㎡, water absorption rate >=1000%, whiteness >=80%, MD >=45N, CD >=10N.
Embodiment three:
Following component and each constituent mass percentage are: polyvinyl alcohol fibre: 60wt% and wood pulp fibre: 40wt% is raw material, this raw material is carried out abundant shredding mixing, by feeding cotton device, raw material is being sent into carding machine process formation fibre web, adopt during carding in two comb and directly spread production technology, gained fibre web is being prewetted, adopt two net clipping, hydraulic pressure is 0.5 ~ 60Bar, the fibre web that compacting is fluffy, discharge the air in fibre web, the energy of water jet effectively can be absorbed after making fibre web enter water spine area, with reinforcing fibre entanglement effect, fibre web after prewetting carry out water lunge row reinforce, adopt cylinder water thorn reinforcement process, described water jet number is 3 ~ 5, hydraulic pressure is 60 ~ 250Bar, carrying out processed, by near for the moisture in fibre web minimum, adopt vacuum water absorption, vacuum is 16000 ~ 37000Pa, enter Final finishing, employing hydro-entangled master arranges, the fibre web drying process of then will reinforce, adopt drying cylinder formula drying mode, drying temperature is 80 ~ 90 DEG C, cloth speed is 70 ~ 100m/min, obtain degradable nonwoven fabric.
Wherein, polyvinyl alcohol fibre adopts water soluble vinylon filament, and wood pulp fibre is any one or a few the mixture in softwood pulp fiber, hardwood pulp fiber, and the length of wood pulp fibre is 1 ~ 4.08mm, and the width of described wood pulp fibre is 40.9 ~ 54.9 μm.
The production technology of a kind of degradable nonwoven fabric of the present invention, its grammes per square metre of the degradable nonwoven fabric obtained is 55g/ ㎡, water absorption rate >=1000%, whiteness >=80%, MD >=55N, CD >=14N.
The production technology of a kind of degradable nonwoven fabric of the present invention, polyvinyl alcohol fibre and wood pulp polyvinyl alcohol fibre are combined, by the degradable non-weaving cloth that the technique of hydro-entangled non-woven fabric prepares, single wood pulp fibre product flexibility of the prior art can be solved poor, intensity is low and easily go to sticks and staves the shortcoming of slag and so on, the product of the non-weaving cloth that single weaving short fiber can also be avoided to be produced by water jet process, due to rough surface with hygroscopicity is low and nondegradable drawback, the degradable non-weaving cloth of gained has raising flexibility, improve product strength, not easily fall slag, water absorption rate is high, easy degraded.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (3)
1. a production technology for degradable nonwoven fabric, is characterized in that: comprise the following steps successively:
A) fibrous raw material preparation: the polyvinyl alcohol fibre 60 ~ 80wt% and the wood pulp fibre 20 ~ 40wt% that take certain mass percent, wood pulp fibre is any one or a few the mixture in softwood pulp fiber, hardwood pulp fiber, length is 1 ~ 4.08mm, width is 40.9 ~ 54.9 μm, polyvinyl alcohol fibre adopts soluble vinylon fiber long filament, through shredding mixing, obtain preparing fibrous raw material;
B) in comb: the fibrous raw material of preparing obtained in a) step is adopted two combing directly to spread production technology to carry out carding, obtain fiber web;
C) prewet: the fiber web obtained in b) step is adopted two net method of clamping, and hydraulic pressure is that 0.5 ~ 60Bar carries out pre-wetted treatment, obtains pre-wet fiber net;
D) water thorn: the pre-wet fiber net obtained in c) step is entered water spine area and adopt cylinder water thorn reinforcement process to reinforce, water jet number is 3 ~ 5, and hydraulic pressure is 60 ~ 250Bar, and process obtains reinforcement fiber web;
E) dewater: adopt vacuum water absorption to dewater the reinforcement fiber web obtained in d) step, vacuum is 16000 ~ 37000Pa, and process obtains dewatered fibrous web;
F) Final finishing: adopt hydro-entangled master finishing technique to carry out Final finishing the dewatered fibrous web obtained in e) step, obtain Final finishing fiber web;
J) dry: adopted by the Final finishing fiber web obtained in f) step drying cylinder formula drying mode to carry out drying, drying temperature is 80 ~ 90 DEG C, and cloth speed is 70 ~ 100m/min, and process obtains degradable nonwoven fabric.
2. the production technology of a kind of degradable nonwoven fabric as claimed in claim 1, is characterized in that: polyvinyl alcohol fibre mass percent: 60wt% in described a) step, wood pulp fibre mass percent: 40wt%.
3. the production technology of a kind of degradable nonwoven fabric according to any one of claim 1 to 2, it is characterized in that: the degradable nonwoven fabric grammes per square metre obtained in described j) step is 50g/ ㎡, water absorption rate >=1000%, whiteness >=80%, MD >=50N, CD >=12N.
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| CN201410055532.5A CN103806220B (en) | 2014-02-18 | 2014-02-18 | A kind of production technology of degradable nonwoven fabric |
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| CN201410055532.5A CN103806220B (en) | 2014-02-18 | 2014-02-18 | A kind of production technology of degradable nonwoven fabric |
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| CN103806220B true CN103806220B (en) | 2016-02-10 |
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| CN104790122B (en) * | 2015-04-24 | 2019-01-11 | 杭州诺邦无纺股份有限公司 | Thermosol is reinforced to break up degradable non-woven material and production method |
| CN104762750A (en) * | 2015-04-28 | 2015-07-08 | 山东省永信非织造材料有限公司 | High skin-attaching-performance crystal facial mask spunlaced non-woven fabric and processing method thereof |
| CN105803673B (en) * | 2016-05-24 | 2019-01-22 | 江苏东方洁妮尔水刺无纺布有限公司 | Tea polyphenols cellulose fibre spunlace non-woven cloth and its production technology |
| CN107326536B (en) * | 2016-11-22 | 2020-06-23 | 上海缔荣纺织品有限公司 | Special-shaped polyester fiber and wood pulp fiber composite spunlace wet tissue cloth and preparation method thereof |
| CN107780044B (en) * | 2017-10-31 | 2020-04-28 | 稳健医疗（黄冈）有限公司 | Production process of jacquard non-woven fabric |
| CN108096926A (en) * | 2017-12-15 | 2018-06-01 | 刘洪亮 | Environment-friendly type filter material |
| CN108708074A (en) * | 2018-06-01 | 2018-10-26 | 吴江康欣医用敷料有限公司 | The preparation method of degradable biological element non-woven fabrics |
| CN111663242A (en) * | 2020-05-29 | 2020-09-15 | 浙江宝仁和中科技有限公司 | Production process of water-soluble spunlace non-woven fabric |
| CN112981711A (en) * | 2021-03-10 | 2021-06-18 | 福建绿阳新材科技有限公司 | Water-saving production process of spunlace non-woven fabric |
| CN113576768B (en) * | 2021-07-30 | 2022-05-31 | 广东茵茵股份有限公司 | Degradable baby diaper |
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Address after: 313100 new century Industrial Park, Li Jiaxiang, Changxing County, Huzhou, Zhejiang Patentee after: Zhejiang Jinsanfa Sanitary Material Technology Co., Ltd. Address before: 313100 new century Industrial Park, Li Jiaxiang, Changxing County, Huzhou, Zhejiang Patentee before: Zhejiang Kingsafe Now-woven Co., Ltd. |
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