CN110983855A - Novel flushable composite process material and production method thereof - Google Patents
Novel flushable composite process material and production method thereof Download PDFInfo
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- CN110983855A CN110983855A CN201911324008.2A CN201911324008A CN110983855A CN 110983855 A CN110983855 A CN 110983855A CN 201911324008 A CN201911324008 A CN 201911324008A CN 110983855 A CN110983855 A CN 110983855A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/49—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
- D21H13/08—Synthetic cellulose fibres from regenerated cellulose
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
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Abstract
The invention discloses a novel flushable composite process material, which is prepared by taking wood pulp fibers and novel regenerated cellulose fibers, namely lyocell fibers as raw materials and adopting a papermaking and non-woven composite process.
Description
The invention relates to a composite technological material capable of being dispersed, in particular to a novel composite technological material capable of being dispersed and a production method thereof.
Background
At present, disposable sanitary products such as medical wiping dry towels and wet towels, daily facial cleaning towels, kitchen and bathroom wiping dry towels and wet towels and personal hygiene nursing wet and dry towels are mostly made of synthetic fibers, the products cannot be naturally degraded after being discarded, the environment is polluted by novel white garbage, along with the research and development of global green environment-friendly materials, non-woven products are widely applied to sanitary materials by unique three-dimensional structures and excellent raw material adaptability, the environmental-friendly energy-saving degradable materials are more and more widely concerned, and in addition, through the investigation of foreign researchers, 96% of water pipe blockage is caused by the disposable sanitary products which cannot be dispersed.
With the improvement of sustainable development idea and environmental protection idea, how to treat the disposable sanitary materials after use is greatly concerned, and some traditional ways of burning, burying and the like can cause great environmental pollution, so that the dispersible materials become industrial development hotspots in recent years, especially the promotion of green production and new fashion of garbage classification, the convenience advantages of degradable, dispersible waste and no need of classification of the dispersible materials are more prominent, and the market application prospect is wide. The traditional dispersible material takes viscose fiber and wood pulp fiber as raw materials, a large amount of acid and alkali are consumed in the viscose processing process, resources are wasted, the environment is polluted, the proportion of viscose used in the material is high, and compared with the use of wood pulp, the fiber manufacturing cost is increased. The novel environment-friendly fiber with excellent performance replaces viscose, the use proportion of the fiber is reduced, and wood pulp is directly used for preparing the degradable dispersible material, so that the research direction of facilitating the life of people and protecting resources and environment is provided.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to solve the problems of large fiber consumption and resource waste of the existing flushable material, and provides a novel flushable composite process material and a production method thereof, wherein the flushable composite process material is prepared by taking wood pulp fibers and novel regenerated cellulose fibers, namely lyocell fibers as raw materials and adopting a papermaking and non-woven composite process, the lyocell fibers are 6-12 mm in length, 0.8-2 d in fineness and 8-20% in consumption, the wood pulp fibers are 80-92% in consumption, the two fibers are mixed into a pulp mixing tank to be mixed into a homogeneous mixed liquid, the wet-laid web is formed by using a papermaking technology, the non-woven spunlace technology is used for flexible reinforcement, and the surface density is 35-80 g/m after combined drying2The flushable composite process material can be used as dry and wet disposable medical and sanitary articles, has wide raw material sources, can be directly thrown into a flush toilet after being used, is naturally biodegraded after being flushable, avoids the complex treatment processes of classification, landfill, incineration and the like when the conventional materials are discarded, and is convenient, sanitary and environment-friendly.
The technical scheme is as follows: the invention relates to a novel flushable composite technical material and a production method thereof, wherein the flushable composite technical material takes wood pulp fiber and novel regenerated cellulose fiber lyocell fiber as raw materials, wherein the wood pulp fiber accounts for 80-92%, the lyocell fiber accounts for 8-20%, and the areal density of the novel flushable composite technical material is 35-80 g/m2。
Furthermore, the novel regenerated cellulose fiber lyocell fiber has the fiber length of 6-12 mm and the fineness of 0.8-2 d, and the lyocell fiber closed-loop circulation solvent spinning production mode avoids acid and alkali consumption, treatment and discharge in the production process of viscose fiber, and is more environment-friendly.
Further, the wood pulp fibers are softwood pulp.
A production method of a novel flushable composite process material comprises the following steps:
(1) uniformly stirring the wood pulp fibers subjected to water dispersion, adding no auxiliary reagent, and simultaneously pretreating the novel regenerated cellulose fiber lyocell fibers, namely conveying the novel regenerated cellulose fiber lyocell fibers to a mechanical cutting and grinding barrel, wherein the rotation speed of a cutter is 600-800 rpm, the rotation radius is 1/3 barrel diameters, the length of an inclined guide plate on the inner wall of the barrel is 50-60 cm, the inclination angle is 55-65 degrees, the protrusion height is 4-5 cm, the cutter and the inclined guide plate are matched to act, fibrillation pretreatment of the lyocell fibers is realized, then mixing the two fibers into a pulp mixing tank to be mixed into homogeneous phase liquid, the concentration of the mixed liquid is 1-3%, and the mixing time is 10-20 min.
(2) Directly adding water into the homogeneous mixed solution in the step (1) to further dilute and mix the homogeneous mixed solution at normal temperature, wherein the concentration is 0.05-0.1%, and sending the homogeneous mixed solution into a papermaking system to form wet webs so as to form wet paper sheets;
(3) the wet paper is turned over by means of non-woven spunlace pre-needling, enters a spunlace reinforcing system, and is subjected to intensive injection by using high-pressure water to the fiber web, so that fibers in the fiber web are displaced and entangled, flexible reinforcement is realized, the spunlace pressure is 15-80 MPa, and the number of spunlace channels is 3-5;
(4) performing negative pressure suction and mangle rolling on the wet paper processed in the step (3), wherein the suction pressure of a negative pressure roller is 0.04-0.05 MPa, and the hydraulic pressure of the mangle rolling is 0.3-0.4 MPa; after the excessive moisture is removed preliminarily, the fiber web is subjected to staggered combined drying through a drying cylinder, hot air and infrared rays, the drying cylinder is used for drying to enable the fiber web to bypass the surface of the hot drying cylinder, the temperature of the drying cylinder is 80-130 ℃, the drying time of the drying cylinder is 15-25 s, the hot air penetrates through the fiber web by utilizing the hot air for drying, the temperature of a hot air oven is 70-100 ℃, the hot air drying time is 15-25 s, and the surface density obtained after drying is 35-80 g/m2The composite technological material capable of being dispersed is formed and rolled.
The invention has the advantages that the invention discloses a novel flushable composite process material and a production method thereof on the basis of resource saving and environmental protection, compared with the traditional flushable material, the lyocell fiber is adopted to replace viscose fiber, the fiber usage amount is saved by 50 percent, the material can be used as durable products such as clothes home textiles and the like, the fiber use value is higher, and the corresponding social labor for producing the fiber is saved, compared with the traditional dry and wet disposable medical sanitary products, the novel flushable composite process material and the production method thereof of the invention do not adopt 38mm long fiber, but adopt fiber with the length of 12mm or less, utilize papermaking pulping, wet-laid and non-woven spunlace flexible reinforcement composite processes, endow the material with excellent use performance, simultaneously have water dispersibility and water flushability, and can be directly thrown into a flush toilet after use, the wood pulp and the lyocell fiber are naturally biodegraded and return to nature under the action of microorganisms, so that the complex treatment processes of landfill incineration and the like when conventional materials are abandoned are avoided.
Drawings
FIG. 1 is a structural cross-sectional view of the present invention;
1. lyocell fibre 2 wood pulp fibre.
Detailed Description
As shown in figure 1, the novel flushable composite process material is obtained by processing a paper-making and non-woven composite process by taking wood pulp fiber 2 and novel regenerated cellulose fiber lyocell fiber 1 as raw materials, wherein the wood pulp fiber 2 is softwood pulp, the wood pulp fiber 2 accounts for 80-92%, the lyocell fiber 1 accounts for 8-20%, and the areal density obtained after drying is 35-80 g/m2The flushable composite process material.
In the embodiment, the novel regenerated cellulose fiber lyocell 1 is adopted to replace viscose in the traditional flushable material, the fiber length is 6-12 mm, the fineness is 0.8-2 d, and the lyocell fiber 1 adopts a closed-loop circulating solvent spinning production mode, so that acid and alkali consumption, treatment and discharge in the viscose production process are avoided, and the environment is protected.
In the example, the 1X-ray diffraction peak of the used lyocell fiber is narrowed, and the polymerization degree and the crystallinity degree are higher; compared with the viscose fiber with the same fineness, the dry fracture strength is improved by 67 percent, the wet fracture strength is improved by 155 percent, and the fiber dosage can be reduced by 55 percent to obtain a flushable product with the same mechanical property, and the dosage of the viscose fiber is reduced to 8 to 20 percent from 20 to 40 percent of that of the lyocell fiber to 1.
In the embodiment, the using amount of the wood pulp fiber 2 is increased to 80-92%, the fibrillation characteristic of the wood pulp fiber 2 enables the water absorption rate and the fullness of the flushable material to be increased by 10-25%, and technological links such as spinning and the like are omitted.
In this example, lyocell fibre 1 used had a smooth, streak-free smooth surface structure, giving the fibre a special function of effectively reducing bacterial growth, highlighting the advantages of the material for use in the medical and hygiene field.
In the embodiment, the papermaking technology is used for pulping and wet-laid web forming, so that the uniformity of the low gram weight of the flushable material is improved by 2-5%; the non-woven spunlace technology is used for flexible reinforcement of products, and the mechanical property is optimized while the use and dispersion requirements are met; the two technologies are organically combined, raw water is used as spunlace water for treating water, and spunlace backwater and drying condensate water directly enter a pulping system, so that graded full-cycle utilization of water resources is realized.
The novel flushable composite process material can be directly thrown into a water closet after use, is flushable into fragments under the action of water flow shearing force, smoothly enters a sewer and a drainage system, and is naturally and biologically degraded by two cellulose fibers, namely wood pulp fiber 2 and lyocell fiber 1 under the action of microorganisms, returns to the nature, so that the complex treatment processes of landfill incineration and the like when conventional materials are abandoned are avoided.
A production method of a novel flushable composite process material comprises the following steps:
(1) uniformly stirring the wood pulp fibers 2 which are soaked in water and dispersed, without adding any auxiliary reagent, simultaneously feeding the lyocell fibers 1 to a mechanical cutting and grinding barrel, wherein the rotation speed of a cutter is 600-800 r/min, the rotation radius is 1/3 barrel diameters, the length of an inclined guide plate on the inner wall of the barrel is 50-60 cm, the inclination angle is 55-65 degrees, the protrusion height is 4-5 cm, the cutter and the inclined guide plate are matched to act, so that fibrillation pretreatment of the lyocell fibers 1 is realized, then mixing the two fibers into a pulp mixing tank to be mixed into a homogeneous mixed liquid, the concentration of the mixed liquid is 1-3%, and the mixing time is 10-20 min.
(2) Directly adding water into the homogeneous mixed solution in the step (1) to further dilute and mix the homogeneous mixed solution at normal temperature, wherein the concentration is 0.05-0.1%, sending the homogeneous mixed solution into a papermaking system to form wet webs, forming wet paper sheets,
(3) the wet paper is turned over by means of non-woven spunlace pre-needling, enters a spunlace reinforcing system, and is intensively sprayed to the fiber web by using high-pressure water, so that fibers in the fiber web are displaced and entangled, flexible reinforcement is realized, the spunlace pressure is 15-80 MPa, the number of spunlace channels is 3-5,
(4) performing negative pressure suction and mangle rolling on the wet paper processed in the step (3), wherein the suction pressure of a negative pressure roller is 0.04-0.05 MPa, and the hydraulic pressure of the mangle rolling is 0.3-0.4 MPa; after the excessive moisture is removed preliminarily, the fiber web is subjected to staggered combined drying through a drying cylinder, hot air and infrared rays, the drying cylinder is used for drying to enable the fiber web to bypass the surface of the hot drying cylinder, the temperature of the drying cylinder is 80-130 ℃, the drying time of the drying cylinder is 15-25 s, the hot air penetrates through the fiber web by utilizing the hot air for drying, the temperature of a hot air oven is 70-100 ℃, the hot air drying time is 15-25 s, and the surface density obtained after drying is 35-80 g/m2Can be dissolved and dispersedAnd (3) synthesizing a process material, and molding and rolling the prepared flushable composite process material.
The invention takes resource saving and environmental protection as principles, takes wood pulp fiber and lyocell fiber as raw materials, and adopts a paper-making and non-woven composite process to process and prepare a novel composite process material capable of being dispersed, compared with the traditional material capable of being dispersed, the lyocell fiber is adopted to replace viscose fiber, the fiber usage amount is saved by 50 percent, the material can be used as durable products such as clothes home textiles, the fiber use value is higher, and the corresponding social labor for producing the fiber is saved. Compared with the traditional dry and wet disposable medical and sanitary products, the novel flushable composite process material and the production method thereof do not adopt 38mm long fiber, adopt fibers with the length of 12mm or less, and utilize papermaking pulping, wet-laid web formation and non-woven spunlace flexible reinforcement composite processes to endow the material with excellent use performance, so that the material has water dispersibility and water flushable performance, can be directly thrown into a water closet after use, is flushable into fragments under the action of water flow shearing force, and smoothly enters a sewer and a drainage system. The raw materials are wood pulp and lyocell fiber, and are naturally biodegraded and return to nature under the action of microorganisms, so that the complex treatment processes of landfill incineration and the like during the conventional material waste are avoided.
The main technical and performance indexes of the related product are as follows, the physical and chemical properties and the appearance quality of ① products are executed according to Q/320684NWE001-2017 flushable wet spunlace non-woven material (FZ/T64012.1 sanitary spunlace non-woven fabric), and the microbial hygiene performance of ② products is executed according to GB 15979-2002 disposable hygienic product hygienic standard.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A novel composite technical material capable of being dispersed is characterized in that: the composite process material capable of being dispersed takes wood pulp fiber and novel regenerated cellulose fiber lyocell as raw materials, wherein the wood pulp fiber accounts for 80-92%, the lyocell fiber accounts for 8-20%, and the areal density of the novel composite process material capable of being dispersed is 35-80 g/m2。
2. The novel flushable composite process material of claim 1, wherein: the novel regenerated cellulose fiber lyocell fiber has the fiber length of 6-12 mm and the fineness of 0.8-2 d, and the lyocell fiber closed-loop circulating solvent spinning production mode avoids acid-base consumption, treatment and discharge in the production process of viscose fiber, and is more environment-friendly.
3. The novel flushable composite process material of claim 1, wherein: the wood pulp fibers are softwood pulp.
4. A method of producing a novel flushable composite process material according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
(1) uniformly stirring the wood pulp fibers subjected to water dispersion, adding no auxiliary reagent, and pretreating the novel regenerated cellulose fiber lyocell fibers, namely conveying the novel regenerated cellulose fiber lyocell fibers to a mechanical cutting and grinding barrel, wherein the rotation speed of a cutter is 600-800 r/min, the rotation radius is 1/3 barrel diameter, the length of an inclined guide plate on the inner wall of the barrel is 50-60 cm, the inclination angle is 55-65 degrees, the protrusion height is 4-5 cm, the cutter and the inclined guide plate are matched to act, fibrillation pretreatment of the lyocell fibers is realized, then mixing the two fibers into a pulp mixing tank to be mixed into a homogeneous mixed liquid, the concentration of the mixed liquid is 1-3%, and the mixing time is 10-20 min;
(2) directly adding water into the homogeneous mixed solution in the step (1) to further dilute and mix the homogeneous mixed solution at normal temperature, wherein the concentration is 0.05-0.1%, and sending the homogeneous mixed solution into a papermaking system to form wet webs so as to form wet paper sheets;
(3) the wet paper is turned over by means of non-woven spunlace pre-needling, enters a spunlace reinforcing system, and is subjected to intensive injection by using high-pressure water to the fiber web, so that fibers in the fiber web are displaced and entangled, flexible reinforcement is realized, the spunlace pressure is 15-80 MPa, and the number of spunlace channels is 3-5;
(4) performing negative pressure suction and mangle rolling on the wet paper processed in the step (3), wherein the suction pressure of a negative pressure roller is 0.04-0.05 MPa, and the hydraulic pressure of the mangle rolling is 0.3-0.4 MPa; after the excessive moisture is removed preliminarily, the fiber web is subjected to staggered combined drying through a drying cylinder, hot air and infrared rays, the drying cylinder is used for drying to enable the fiber web to bypass the surface of the hot drying cylinder, the temperature of the drying cylinder is 80-130 ℃, the drying time of the drying cylinder is 15-25 s, the hot air penetrates through the fiber web by utilizing the hot air for drying, the temperature of a hot air oven is 70-100 ℃, the hot air drying time is 15-25 s, and the surface density obtained after drying is 35-80 g/m2The composite technological material capable of being dispersed is formed and rolled.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112137477A (en) * | 2020-05-06 | 2020-12-29 | 中纺院绿色纤维股份公司 | Degradable disinfection wet tissue |
| CN113718548A (en) * | 2021-09-15 | 2021-11-30 | 优奈实业(上海)有限公司 | Preparation method of dispersible non-woven fabric and dispersible non-woven fabric |
| CN114808525A (en) * | 2022-05-26 | 2022-07-29 | 华南理工大学 | Soft, easily degradable and flushable plant fiber facial cleansing towel and preparation method and application thereof |
| CN114960289A (en) * | 2022-05-26 | 2022-08-30 | 华南理工大学 | Green degradable dispersible plant fiber cleaning wipe and preparation method and application thereof |
| CN116497624A (en) * | 2023-05-17 | 2023-07-28 | 河南逸祥卫生科技有限公司 | Degradable flushable spunlaced material and manufacturing method thereof |
| CN116676805A (en) * | 2023-06-05 | 2023-09-01 | 河南逸祥卫生科技有限公司 | High-wet-strength flushable spunlaced material and manufacturing method thereof |
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| CN109252286A (en) * | 2018-11-13 | 2019-01-22 | 浙江宝仁无纺制品有限公司 | A kind of production technology for breaking up lavatory non-woven fabrics |
| CN110143022A (en) * | 2019-05-28 | 2019-08-20 | 南通大学 | A kind of high moisturizing elastic force base wet process spunlaced face mask base fabric and its production technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112137477A (en) * | 2020-05-06 | 2020-12-29 | 中纺院绿色纤维股份公司 | Degradable disinfection wet tissue |
| CN113718548A (en) * | 2021-09-15 | 2021-11-30 | 优奈实业(上海)有限公司 | Preparation method of dispersible non-woven fabric and dispersible non-woven fabric |
| CN114808525A (en) * | 2022-05-26 | 2022-07-29 | 华南理工大学 | Soft, easily degradable and flushable plant fiber facial cleansing towel and preparation method and application thereof |
| CN114960289A (en) * | 2022-05-26 | 2022-08-30 | 华南理工大学 | Green degradable dispersible plant fiber cleaning wipe and preparation method and application thereof |
| CN116497624A (en) * | 2023-05-17 | 2023-07-28 | 河南逸祥卫生科技有限公司 | Degradable flushable spunlaced material and manufacturing method thereof |
| CN116676805A (en) * | 2023-06-05 | 2023-09-01 | 河南逸祥卫生科技有限公司 | High-wet-strength flushable spunlaced material and manufacturing method thereof |
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Application publication date: 20200410 |