CN101424009A - Method for preparing low-temperature water-soluble interlaced fabric - Google Patents
Method for preparing low-temperature water-soluble interlaced fabric Download PDFInfo
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- CN101424009A CN101424009A CNA2008102041960A CN200810204196A CN101424009A CN 101424009 A CN101424009 A CN 101424009A CN A2008102041960 A CNA2008102041960 A CN A2008102041960A CN 200810204196 A CN200810204196 A CN 200810204196A CN 101424009 A CN101424009 A CN 101424009A
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Abstract
The invention relates to a method for preparing a low-temperature water-soluble non-woven fabric. The method comprises the following steps: (1) materials of polyvinyl alcohol, flow promoter and solubilizer with weight percentage of 90- 99.5 percent to 0.5-5 percent to 0-5 percent are dissolved in water to prepare a solution of the materials; the weight percent concentration of the materials is between 15 and 45 percent; and the weight percent concentration of the water is between 55 and 85 percent; (2) the solution is subjected to standing deaeration or vacuum deaeration and is stored in a material storage tank; (3) the solution in the material storage tank is pumped to a metering pump through compressed air; and the temperature of the storage tank is between 90 and 99 DEG C; (4) the solution is ejected out from a nozzle through hot compressed air to form polyvinyl alcohol filament; and (5) the polyvinyl alcohol filament is subjected to net forming, drying and reeling on a hot platen. The low-temperature water-soluble non-woven fabric obtained through the method does not absorb dampness and gelatinize in air and can be dissolved in water; the polyvinyl alcohol aqueous solution is directly sprayed and is subjected to net forming to manufacture the non-woven fabric; and the method has a simple process course and no environmental pollution.
Description
Technical field
The invention belongs to the preparation field of water-soluble interlaced fabric, particularly relate to a kind of preparation method of low-temperature water-soluble interlaced fabric.
Background technology
Water-soluble polyvinyl alcohol nonwovens has the characteristic of dissolving in water, polyvinyl alcohol can be degraded with the method for biochemistry in the polyvinyl alcohol water solution, and for disposable non-weaving cloth, it is a kind of fabric of environmental protection.At present, the water solution temperature of the water-soluble polyvinyl alcohol nonwovens on the market is all more than 75 ℃, is difficult to dissolving in being lower than 75 ℃ water.This product is applied in some hospitals, makes operation dress, and patient's gown reaches disposable articles for use such as sheet.This clothes promptly may be dissolved in after use in the hot water, then in biochemistry pool by the microorganism killing germ, degrading polyvinyl alcohol, waste water reach Environmental Safety discharging.Need non-weaving cloth below 75 ℃ at a lot of special occasions, even just can dissolve in the water of room temperature condition, so common water-soluble polyvinyl alcohol nonwovens is just powerless.
Common water-soluble polyvinyl alcohol nonwovens is by the degree of polymerization 1700, and the polyvinyl alcohol of alcoholysis degree 99% is earlier made fiber manufacture process without the staple fibre of acetalation through wet spinning, then these water miscible staple fibres is being made non-weaving cloth.
The manufacture process of vinal is earlier polyvinyl alcohol to be dissolved into solution, the process of spray silk solidificating fiber again, this spinning process complex process, pollute big, and then with the complex process of fiber lapping manufacture-illegal manufacturing cloth,
At present, it is 96109434.6 that number of patent application is only arranged, and the non-weaving cloth of the invention of " water-soluble interlaced fabric that is used for health-care hospital " can be soluble in water under normal temperature condition.It is after making non-weaving cloth by cellulose fibre, to become carboxymethyl cellulose salt to form through chemical treatment again.Such non-weaving cloth is understood moisture absorption and the gelatinization of getting damp in air, can't can only use with dressing as medical or beauty treatment as taking and the industrial fabric use.
We also application number be 200710043805.4 and 200710043806.9 invention " preparation method of spun-bonded water-soluble polyvinyl alcohol nonwovens " and " preparation method of melt-blown water-soluble polyvinyl alcohol nonwovens " with thermoplasticity water-soluble polyvinyl alcohol feedstock production water miscible polyvinyl alcohol.Also produce but this water insoluble thermoplastic polyvinyl alcohol is at present domestic, so studied the method for making water miscible non-weaving cloth with the polyvinyl alcohol of the non-thermal plasticity of domestic production.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method of low-temperature water-soluble interlaced fabric, and this method technical process is simple, non-environmental-pollution.
The present invention is a kind of preparation method of low-temperature water-soluble interlaced fabric, comprising:
(1) with material polyvinyl alcohol, flow improver additive and solubilizer, its percentage by weight is 90%-99.5%:0.5%-5%:0%-5%, is dissolved in the water, is mixed with the solution of material, the concentration expressed in percentage by weight of its material is 15%-45%, and the concentration expressed in percentage by weight of water is 85-55%;
(2) with above-mentioned solution process standing and defoaming or vacuum defoamation, store at storage tank, the temperature of storage tank remains on 90-99 ℃ temperature, makes solution that good mobility be arranged;
(3) with compressed air solution is depressed into measuring pump from storage tank, compressed-air actuated pressure is 2-5 kilograms per centimeter square; The temperature of storage tank is 90-99 ℃;
(4) compressed air with heat sprays solution from nozzle, 100-150 ℃ of compressed air temperature, and pressure 2-6 kilograms per centimeter square forms the polyvinyl alcohol filament;
(5) the polyvinyl alcohol filament is to become net, drying on the 80-120 ℃ of hot cylinder in temperature, batches, and draw off rate is 50～500m/min.
Described polyvinyl alcohol, flow improver additive and solubilizer are introduced in another sheet application " a kind of low-temperature water-soluble interlaced fabric and composition thereof ".
Described low-temperature water-soluble interlaced fabric is through spraying the polyvinyl alcohol nonwovens that direct method into the net is produced by poly-vinyl alcohol solution.
The time of described step (2) standing and defoaming is 24-48 hours; The vacuum of vacuum defoamation is 740-760mmHg.
The soluble polyvinyl alcohol nonwovens, this technology is also knitted the manufacturing non-weaving cloth applicable to the polyvinyl alcohol of various other specifications to this technology in can making the above water of 0-20 ℃ of temperature.
Beneficial effect
(1) the water at low temperature fusibleness non-weaving cloth of gained of the present invention can the moisture absorption and gelatinization in air, and the polyvinyl alcohol nonwovens that dissolves in the water more than 0-20 ℃ can be made disposable industrial use base material and uses with disposable civilian goods;
(2) the polyvinyl alcohol water solution direct injection becomes net to make non-manufacturing cloth, and technical process is simple, non-environmental-pollution.
Description of drawings
Fig. 1 manufacturing process flow.
Specific implementation method
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Material dissolution is become hundred parts of concentration of weight of material in water be 30% solution.Material consists of polyvinyl alcohol: flow improver additive: the ratio of solubilizer is 97:2:1.Air with pressure 3 kg/cm is extruded 95 ℃ solution, behind measuring pump, 130 ℃ of hot-airs by pressure 4 kg/cm, solution is sprayed into silk, on the cylinder of 100 ℃ of temperature, become net, drying, batch in 20 ℃ water consoluet low-temperature water-soluble interlaced fabric, its specification is 35 gram/M
2
Embodiment 2
Material dissolution is become hundred parts of concentration of weight of material in water be 15% solution.Material consists of polyvinyl alcohol: flow improver additive: the ratio of solubilizer is 90:5:5.Air with pressure 2 kg/cm is extruded 90 ℃ solution, behind measuring pump, 150 ℃ of hot-airs by pressure 2 kg/cm, solution is sprayed into silk, on the cylinder of 120 ℃ of temperature, become net, drying, batch in 10 ℃ water consoluet low-temperature water-soluble interlaced fabric, its specification is 18 gram/M
2
Embodiment 3
Material dissolution is become hundred parts of concentration of weight of material in water be 45% solution.Material consists of polyvinyl alcohol: flow improver additive: the ratio of solubilizer is 92:3:5.Air with pressure 5 kg/cm is extruded 99 ℃ solution, behind measuring pump, 130 ℃ of hot-airs by pressure 6 kg/cm, solution is sprayed into silk, on the cylinder of 80 ℃ of temperature, become net, drying, batch in 10 ℃ water consoluet low-temperature water-soluble interlaced fabric, its specification is 75 gram/M
2
Embodiment 4
Material dissolution is become hundred parts of concentration of weight of material in water be 40% solution.Material consists of polyvinyl alcohol: flow improver additive: the ratio of solubilizer is 95:4.5:0.5.Air with pressure 4.5 kg/cm is extruded 98 ℃ solution, behind measuring pump, 125 ℃ of hot-airs by pressure 5 kg/cm, solution is sprayed into silk, on the cylinder of 100 ℃ of temperature, become net, drying, batch in 10 ℃ water consoluet low-temperature water-soluble interlaced fabric, its specification is 68 gram/M
2
Claims (3)
1. the preparation method of a low-temperature water-soluble interlaced fabric comprises:
(1) with material polyvinyl alcohol, flow improver additive and solubilizer, its percentage by weight is 90-99.5%:0.5-5%:0-5%, is dissolved in the water, is mixed with the solution of material, the concentration expressed in percentage by weight of its material is 15%-45%, and the concentration expressed in percentage by weight of water is 85-55%;
(2) with above-mentioned solution process standing and defoaming or vacuum defoamation, store at storage tank, the temperature of storage tank remains on 90-99 ℃ temperature;
(3) with compressed air solution is depressed into measuring pump from storage tank, compressed-air actuated pressure is 2-5 kilograms per centimeter square; The temperature of storage tank is 90-99 ℃;
(4) compressed air with heat sprays solution from nozzle, 100-150 ℃ of compressed air temperature, and pressure 2-6 kilograms per centimeter square forms the polyvinyl alcohol filament;
(5) the polyvinyl alcohol filament is to become net, drying on the 80-120 ℃ of hot cylinder in temperature, batches, and draw off rate is 50～200m/min.
2. the preparation method of a kind of low-temperature water-soluble interlaced fabric according to claim 1, it is characterized in that: described low-temperature water-soluble interlaced fabric is through spraying the polyvinyl alcohol nonwovens that direct method into the net is produced by poly-vinyl alcohol solution.
3. the preparation method of a kind of low-temperature water-soluble interlaced fabric according to claim 1, it is characterized in that: the time of described step (2) standing and defoaming is 24-48 hours; The vacuum of vacuum defoamation is 740-760mmHg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102041960A CN101424009A (en) | 2008-12-09 | 2008-12-09 | Method for preparing low-temperature water-soluble interlaced fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102041960A CN101424009A (en) | 2008-12-09 | 2008-12-09 | Method for preparing low-temperature water-soluble interlaced fabric |
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| CN101424009A true CN101424009A (en) | 2009-05-06 |
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| CNA2008102041960A Pending CN101424009A (en) | 2008-12-09 | 2008-12-09 | Method for preparing low-temperature water-soluble interlaced fabric |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120052036A1 (en) * | 2010-07-02 | 2012-03-01 | Glenn Jr Robert Wayne | Filaments comprising an active agent nonwoven webs and methods for making same |
| CN105908361A (en) * | 2016-05-18 | 2016-08-31 | 丹东旺盛源无纺布有限公司 | Pulp mixing technology for producing water soluble non-woven fabric through water method |
| CN112793266A (en) * | 2020-12-29 | 2021-05-14 | 中广核研究院有限公司 | Composite material and preparation method and application thereof |
| US11925698B2 (en) | 2020-07-31 | 2024-03-12 | The Procter & Gamble Company | Water-soluble fibrous pouch containing prills for hair care |
| US11944693B2 (en) | 2010-07-02 | 2024-04-02 | The Procter & Gamble Company | Method for delivering an active agent |
| US11944696B2 (en) | 2010-07-02 | 2024-04-02 | The Procter & Gamble Company | Detergent product and method for making same |
| US11951194B2 (en) | 2017-01-27 | 2024-04-09 | The Procter & Gamble Company | Compositions in the form of dissolvable solid structures comprising effervescent agglomerated particles |
| US11970789B2 (en) | 2022-08-29 | 2024-04-30 | The Procter & Gamble Company | Filaments comprising an active agent nonwoven webs and methods for making same |
-
2008
- 2008-12-09 CN CNA2008102041960A patent/CN101424009A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120052036A1 (en) * | 2010-07-02 | 2012-03-01 | Glenn Jr Robert Wayne | Filaments comprising an active agent nonwoven webs and methods for making same |
| US11944693B2 (en) | 2010-07-02 | 2024-04-02 | The Procter & Gamble Company | Method for delivering an active agent |
| US11944696B2 (en) | 2010-07-02 | 2024-04-02 | The Procter & Gamble Company | Detergent product and method for making same |
| CN105908361A (en) * | 2016-05-18 | 2016-08-31 | 丹东旺盛源无纺布有限公司 | Pulp mixing technology for producing water soluble non-woven fabric through water method |
| US11951194B2 (en) | 2017-01-27 | 2024-04-09 | The Procter & Gamble Company | Compositions in the form of dissolvable solid structures comprising effervescent agglomerated particles |
| US11925698B2 (en) | 2020-07-31 | 2024-03-12 | The Procter & Gamble Company | Water-soluble fibrous pouch containing prills for hair care |
| CN112793266A (en) * | 2020-12-29 | 2021-05-14 | 中广核研究院有限公司 | Composite material and preparation method and application thereof |
| US11970789B2 (en) | 2022-08-29 | 2024-04-30 | The Procter & Gamble Company | Filaments comprising an active agent nonwoven webs and methods for making same |
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Open date: 20090506 |