CN103276621B - Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics - Google Patents
Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics Download PDFInfo
- Publication number
- CN103276621B CN103276621B CN201310228387.1A CN201310228387A CN103276621B CN 103276621 B CN103276621 B CN 103276621B CN 201310228387 A CN201310228387 A CN 201310228387A CN 103276621 B CN103276621 B CN 103276621B
- Authority
- CN
- China
- Prior art keywords
- water
- polyvinyl alcohol
- soluble polyvinyl
- alcohol fibers
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics. The method comprises a step of water-soluble polyvinyl alcohol fiber suspension pulp preparation, a step of ratio blending, a step of wet slope screen shaping, a step of drying, and a step of rolling. The method allows the product fluffiness and the fiber web uniformity to be good, and the transverse and longitudinal tension of products to satisfy user requirements, and has a simple production technology.
Description
Technical field
The present invention relates to PVA fiber art, refer more particularly to a kind of preparation method of water-soluble polyvinyl alcohol fibers wet nonwoven fabrics.
Background technology
Nonwoven material (Nonwovens) is also known as non-weaving cloth, nonwoven fabric, supatex fabric, bondedfibre fabric or nonwoven fabric.Nonwoven techniques is one and comes from weaving, but surmounts the materials processing technology of weaving.Different nonwovens process technology has each self-corresponding technological principle.But from macroscopically, the general principle of nonwoven techniques is consistent, can describe, generally can be divided into following Four processes by its technical process: (1) fiber prepares; (2) net is become; (3) reinforce; (4) Final finishing.
At present, domestic water soluble polyvinyl alcohol (PVA) fiber non-woven cloth production process mainly contains dry-laying-chemical adhesion method and dry-laying-water acupuncture manipulation two kinds.The soluble non-woven fabrics feel of producing with dry-laying-chemical adhesion is comparatively hard, and softness is poor, thus limits its application in medical and in other disposable hygienic cloth, although the method small investment of production equipment.But production efficiency is low, production capacity is little, processing cost is high, and competitive advantage is not obvious.Although and the hardness of the soluble non-woven fabrics product adopting water acupuncture manipulation to process, softness is improved, and its equipment price is higher, and production cost is high, is unfavorable for applying.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point of the prior art and provide a kind of soluble non-woven fabrics product bulkiness, fibre net homogeneity better, product transverse and longitudinal pulling force can meet the preparation method of the water-soluble polyvinyl alcohol fibers wet nonwoven fabrics that user requires.
The present invention realizes in the following way:
A preparation method for water-soluble polyvinyl alcohol fibers wet nonwoven fabrics, is characterized in that: comprise the following steps:
(1) water-soluble polyvinyl alcohol fibers suspends and starches preparation: drop in the beater tub with rotary wind type agitator respectively by the water-soluble polyvinyl alcohol fibers of solution temperature Wtb and crystallinity Xc f in different water, by strong current, water-soluble polyvinyl alcohol fibers is discongested, be mixed with fibre concentration respectively at the mixing slurry of 1% ~ 10%, then adopt respectively in the storage vat sending stock pump to deliver to provide for oneself and form different fiber suspension slurries;
(2) ratio allotment: adopted in proportion by two or more fiber suspension slurry and send stock pump to deliver in mixing tank, the fiber suspension mixed slurry is diluted to concentration is 0.01% ~ 0.1% simultaneously;
(3) wet method titled net formation: be that 0.01% ~ 0.1% suspension Jiang Jing center pulp distributor enters head box by deployed concentration, the neat and well spaced element on head box to suspend slurry slurry stream carry out refinement distribution and neat and well spaced; The uniform slurry network speed ratio flowed with 0.50 ~ 1.00 of starching flowed out from head box enters building mortion, is 200m at dehydrating amount
3/ h ~ 350m
3carry out under the pressure reduction of/h dewatering, being shaped, exported fibres set at building mortion;
(4) dry: adopt the method that three district's drying cylinders are reinforced, by fibres set moisture content 40% ~ 55% the fibre web drying cylinder that enters the firstth district dewater, then enter the secondth district viscose fibre is dissolved and solidifies, finally carry out anxious drying in the 3rd district and finally make water-soluble polyvinyl alcohol fibers wet nonwoven fabrics;
(5) rolling: it is wound into a roll that the water-soluble polyvinyl alcohol fibers wet nonwoven fabrics made enters sutomatic winding machine, then carry out the product that rewind slitting becomes different size.
The invention has the advantages that: adopt wet method oblique net production technology device to replace the production technology of original soluble non-woven fabrics dry-laying-chemical adhesion, be medium by water, based on paper technology, oblique network process is adopted to become net, solve the problem that prior art production efficiency is low, speed of production can reach more than 400m/min; Solve original wet laid nonwoven material almost isotropism problem simultaneously, make fiber disordered arrangements in fibre web; Solve different quality fiber mixed almost unrestricted mutually; And the soluble non-woven fabrics product bulkiness of producing, fibre net homogeneity are better, product transverse and longitudinal pulling force can meet user's requirement.
Detailed description of the invention
The specific embodiment of the invention is described in detail in detail:
A kind of preparation method of water-soluble polyvinyl alcohol fibers wet nonwoven fabrics, comprise the following steps: (1) water-soluble polyvinyl alcohol fibers suspends and starches preparation: drop in the beater tub with rotary wind type agitator respectively by the water-soluble polyvinyl alcohol fibers of solution temperature Wtb and crystallinity Xc f in different water, by strong current, water-soluble polyvinyl alcohol fibers is discongested, be mixed with fibre concentration respectively at the mixing slurry of 1% ~ 10%, then adopt respectively in the storage vat sending stock pump to deliver to provide for oneself and form different fiber suspension slurries; (2) ratio allotment: two or more fiber suspension slurry is adopted in proportion and send stock pump to deliver in mixing tank, the fiber suspension mixed slurry is diluted to 0.01% ~ 0.1% simultaneously; (3) wet method titled net formation: be that 0.01% ~ 0.1% suspension Jiang Jing center pulp distributor enters head box by deployed concentration, neat and well spaced element on head box to suspend slurry slurry stream carry out refinement distribution and neat and well spaced, make slurry stream flow velocity consistent, slurry stream fiber is dispersed, and produces microturbulent motion and flow to shaped segment drainage and formation; The uniform slurry network speed ratio flowed with 0.50 ~ 1.00 of starching flowed out from head box enters building mortion, is 200m at dehydrating amount
3/ h ~ 350m
3carry out under the pressure reduction of/h dewatering, being shaped, exported fibres set at building mortion; (4) dry: adopt the method that three district's drying cylinders are reinforced, by fibres set moisture content 40% ~ 55% the fibre web drying cylinder that enters the firstth district dewater, then enter the secondth district viscose fibre is dissolved and solidifies, finally carry out anxious drying in the 3rd district and finally make water-soluble polyvinyl alcohol fibers wet nonwoven fabrics; (5) rolling: it is wound into a roll that the water-soluble polyvinyl alcohol fibers wet nonwoven fabrics made enters sutomatic winding machine, then carry out the product that rewind slitting becomes different size.
In the water of water-soluble polyvinyl alcohol fibers of the present invention, solution temperature Wtb (DEG C) and crystallinity Xc f (%) meets following formula: 60 DEG C of <Wtb < 120 DEG C; 40%≤Xcf≤100%.
The water-soluble polyvinyl alcohol fibers of two or more different solution temperature of the present invention is except meeting above-mentioned relation formula, wherein a kind of fiber A uses as main material, do not dissolved in production process, other fibers B or C or D is extraordinary water-soluble fibre, uses in process of production as viscose fibre.
The line density of water-soluble polyvinyl alcohol fibers of the present invention does not have specific restriction, and in this preparation method, the line density of optimum fiber is between 0.5dtex ~ 10dtex.
The length of water-soluble polyvinyl alcohol fibers of the present invention does not have specific restriction, and in tiltedly net is produced, in order to ensure manufacture paper with pulp quality and technological requirement, optimum fiber length is between 2mm ~ 30mm.
The present invention adopts novel titled net formation technology of manufacturing paper with pulp to produce nonwoven fabric, and its production maximum speed can reach more than 1000m/min, the preferred 35m/min ~ 800m/min of speed of production of the present invention.
Embodiment 1
Be 90 DEG C by solution temperature Wtb in water, crystallinity Xc f be 65% water-soluble polyvinyl alcohol fibers A and water in solution temperature Wtb70 DEG C, crystallinity Xc f be 45% water-soluble polyvinyl alcohol fibers B drop in the beater tub with water quality respectively, being mixed with fibre concentration at the mixing slurry of 2%, being diluted to sending stock pump to send into storage vat the fiber suspension slurry that concentration is 1% respectively simultaneously; By the suspending liquid A of storage vat, B in proportion A:B=9:1 send into mixing tank with sending stock pump, and to be diluted to concentration be 0.03%.In mixing tank online concentration be the suspension of 0.03% through center pulp distributor, enter head box and carry out being dehydrated into net, slurry net Transmission Ratio Control is 0.64; The drying cylinder that the fibre web be shaped enters the firstth district dewaters, first district's dryer temperature is set as 65 DEG C, when fibre web enters second district's drying cylinder, moisture content is about 20%, viscose fibre dissolves in the secondth district and produces fibre web bonding by fibre web under hygrometric state situation, second district's dryer temperature is set as between 68 DEG C ~ 70 DEG C, last fibre web is dried rapidly in the 3rd district, 3rd district's temperature is set between 110 ~ 130 DEG C, speed of production is set as 150m/min, makes water-soluble polyvinyl alcohol fibers wet nonwoven fabrics; The grammes per square metre of obtained water-soluble polyvinyl alcohol fibers wet nonwoven fabrics is 45g/m
2, in water, solution temperature is 93 DEG C, and the mechanical performance detecting soluble non-woven fabrics is: Cross breaking strength is 75N, and longitudinal fracture brute force is 80N, and elongation at break is 13%, meets the requirements.
Embodiment 2
Be 70 DEG C by solution temperature Wtb in water, crystallinity Xc f be 55% water-soluble polyvinyl alcohol fibers A and water in solution temperature Wtb60 DEG C, crystallinity Xc f be 40% water-soluble polyvinyl alcohol fibers B drop in the beater tub with water quality respectively, being mixed with fibre concentration at the mixing slurry of 2%, being diluted to sending stock pump to send into storage vat the fiber suspension slurry that concentration is 1% respectively simultaneously, by the suspending liquid A of storage vat, B in proportion A:B=9:1 send into mixing tank with sending stock pump, and to be diluted to concentration be 0.04%, concentration of surfing the Net in mixing tank be the suspension of 0.03% through center pulp distributor, enter head box and carry out being dehydrated into net, slurry net Transmission Ratio Control is 0.84, the drying cylinder that the fibre web be shaped enters the firstth district dewaters, first district's dryer temperature is set as 55 DEG C, when fibre web enters second district's drying cylinder, moisture content is about 20%, viscose fibre dissolves in the secondth district and produces fibre web bonding by fibre web under hygrometric state situation, second district's dryer temperature is set as between 60 DEG C ~ 65 DEG C, fibre web is dried in the 3rd district, 3rd district's temperature is set between 90 ~ 100 DEG C, last fibre web enters the 4th drying cylinder and dries rapidly, 4th district's dryer temperature is set as 110 DEG C ~ 130 DEG C, speed of production is set as 150m/min, obtained water-soluble polyvinyl alcohol fibers wet nonwoven fabrics, the grammes per square metre of obtained water-soluble polyvinyl alcohol fibers wet nonwoven fabrics is 65g/m
2, in the water of water-soluble nonwoven fabric, solution temperature is 73 DEG C, and the mechanical performance detecting soluble non-woven fabrics is: Cross breaking strength, 85N, longitudinal fracture brute force is 90N, and elongation at break is 14.3N, meets the requirements.
Claims (1)
1. a preparation method for water-soluble polyvinyl alcohol fibers wet nonwoven fabrics, is characterized in that: comprise the following steps:
(1) water-soluble polyvinyl alcohol fibers suspends and starches preparation: drop in the beater tub with rotary wind type agitator respectively by the water-soluble polyvinyl alcohol fibers of solution temperature Wtb and crystallinity Xc f in different water, by strong current, water-soluble polyvinyl alcohol fibers is discongested, be mixed with fibre concentration respectively at the mixing slurry of 1% ~ 10%, then adopt respectively in the storage vat sending stock pump to deliver to provide for oneself and form different fiber suspension slurries;
(2) ratio allotment: adopted in proportion by two or more fiber suspension slurry and send stock pump to deliver in mixing tank, the fiber suspension mixed slurry is diluted to concentration is 0.01% ~ 0.1% simultaneously;
(3) wet method titled net formation: be that 0.01% ~ 0.1% suspension Jiang Jing center pulp distributor enters head box by deployed concentration, the neat and well spaced element on head box to suspend slurry slurry stream carry out refinement distribution and neat and well spaced; The uniform slurry network speed ratio flowed with 0.50 ~ 1.00 of starching flowed out from head box enters building mortion, is 200m at dehydrating amount
3/ h ~ 350m
3carry out under the pressure reduction of/h dewatering, being shaped, exported fibres set at building mortion;
(4) dry: adopt the method that three district's drying cylinders are reinforced, by fibres set moisture content 40% ~ 55% the fibre web drying cylinder that enters the firstth district dewater, then enter the secondth district viscose fibre is dissolved and solidifies, finally carry out anxious drying in the 3rd district and finally make water-soluble polyvinyl alcohol fibers wet nonwoven fabrics;
(5) rolling: it is wound into a roll that the water-soluble polyvinyl alcohol fibers wet nonwoven fabrics made enters sutomatic winding machine, then carry out the product that rewind slitting becomes different size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228387.1A CN103276621B (en) | 2013-06-08 | 2013-06-08 | Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310228387.1A CN103276621B (en) | 2013-06-08 | 2013-06-08 | Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103276621A CN103276621A (en) | 2013-09-04 |
| CN103276621B true CN103276621B (en) | 2015-06-10 |
Family
ID=49059227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310228387.1A Active CN103276621B (en) | 2013-06-08 | 2013-06-08 | Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103276621B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005176A (en) * | 2014-06-17 | 2014-08-27 | 桃江县环宇纺织新材料科技有限公司 | 60 DEG C water-soluble non-woven cloth and production method |
| CN105369685B (en) * | 2015-10-08 | 2018-01-02 | 嘉兴学院 | Kraft fibers shoe-pad paper and preparation method thereof |
| CN106381612A (en) * | 2016-08-30 | 2017-02-08 | 绍兴柯桥天圣无纺有限公司 | High-moisture absorbing special terylene wet process hydroentangle non-woven fabric and preparation method for same |
| CN113699690A (en) * | 2021-09-30 | 2021-11-26 | 许玉梅 | Composite non-woven fabric processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267016A (en) * | 1978-10-23 | 1981-05-12 | Masaki Okazaki | Polyvinyl alcohol fiber for binding a fibrous sheet and a process for the preparation thereof |
| CN1337492A (en) * | 2001-09-05 | 2002-02-27 | 金周敏 | Water soluble paper and its making process |
| CN1461850A (en) * | 2002-06-01 | 2003-12-17 | 李华旺 | Water-soluble paper and its production method |
| CN102433599A (en) * | 2010-09-29 | 2012-05-02 | 中国石油化工集团公司 | Water-soluble polyvinyl alcohol chopped fiber as well as preparation method and application thereof |
-
2013
- 2013-06-08 CN CN201310228387.1A patent/CN103276621B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267016A (en) * | 1978-10-23 | 1981-05-12 | Masaki Okazaki | Polyvinyl alcohol fiber for binding a fibrous sheet and a process for the preparation thereof |
| CN1337492A (en) * | 2001-09-05 | 2002-02-27 | 金周敏 | Water soluble paper and its making process |
| CN1461850A (en) * | 2002-06-01 | 2003-12-17 | 李华旺 | Water-soluble paper and its production method |
| CN102433599A (en) * | 2010-09-29 | 2012-05-02 | 中国石油化工集团公司 | Water-soluble polyvinyl alcohol chopped fiber as well as preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 关于水溶性聚乙烯醇非织造布在绣花制品中难溶问题的探讨;周光元 等;《非织造布》;20090228;第17卷(第1期);6-10 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103276621A (en) | 2013-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103276621B (en) | Preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabrics | |
| CN105088532A (en) | High-water-retention mask base cloth and preparation method thereof | |
| CN103806220B (en) | A kind of production technology of degradable nonwoven fabric | |
| CN103352316B (en) | For nonwoven fabric and the production technology thereof of wall reinforcement | |
| CN106313747A (en) | Fully-degradable compound non-woven for cleaning and manufacturing process thereof | |
| CN101586287A (en) | A method for producing moisture paper tissue material | |
| CN107683358A (en) | Cellulose fibre is used for the purposes for manufacturing non-woven cloth | |
| CN112267207A (en) | Production method of front-bleaching high-speed high-yield all-cotton spunlaced non-woven fabric | |
| CN102337701A (en) | Process for producing high-molecular water-absorbent resin dust-free paper | |
| CN109023941A (en) | A kind of preparation method of aeroge heat preservation composite material for weaving | |
| CN107022843A (en) | A kind of spun lacing production-line technique system | |
| CN103305955B (en) | Preparation method of polyving akohol filament fibers | |
| CN108239822A (en) | A kind of Lyocell filament nonwovens material and preparation method thereof | |
| CN104532474A (en) | Manufacturing method of imitated cow top layer leather oily leather | |
| CN112663399A (en) | Wet nonwoven fabric for water treatment reverse osmosis membrane support body base material and preparation method thereof | |
| CN111593600A (en) | Wet preparation method of cotton stalk fiber non-woven fabric | |
| CN108442034A (en) | A kind of compound non-woven base fabric of melt-blown spun lacing | |
| CN106320084B (en) | A kind of production technology of wrinkle cleansing tissue | |
| CN101397723A (en) | Process for producing high soft and high elastic novel spun-laced clothing dressing | |
| CN102828347B (en) | Hydraulic-jet net forming method and device and nonwoven fabric product | |
| CN107099933A (en) | A kind of production technology with wrinkled surface structure non-woven fabrics | |
| CN106996054A (en) | A kind of production method of wood pulp hydro-entangled composite non-woven fabric paper | |
| CN204097792U (en) | Wide gathering-device is controlled in a kind of cylinder mould machine wet trim | |
| CN206783920U (en) | A kind of helix drum wire oscillator for spun-bonded hot rolling non-woven fabric equipment | |
| CN104711891A (en) | Wet-process non-woven fabric manufacturing method and manufacturing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of water-soluble polyvinyl alcohol fiber wet non-woven fabric Effective date of registration: 20220110 Granted publication date: 20150610 Pledgee: Fujian Yong'an Rural Commercial Bank Co.,Ltd. Pledgor: YONGAN BAOHUALIN INDUSTRIAL DEVELOPMENT Co.,Ltd. Registration number: Y2022350000003 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |