CN113417068A - Processing and production process of environment-friendly water-soluble cloth - Google Patents
Processing and production process of environment-friendly water-soluble cloth Download PDFInfo
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- CN113417068A CN113417068A CN202010140250.0A CN202010140250A CN113417068A CN 113417068 A CN113417068 A CN 113417068A CN 202010140250 A CN202010140250 A CN 202010140250A CN 113417068 A CN113417068 A CN 113417068A
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- polyvinyl alcohol
- spinning
- soluble
- water
- environment
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- 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
- D04H1/4282—Addition polymers
- D04H1/4309—Polyvinyl alcohol
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/04—Dry spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/14—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
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- 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
- D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses a processing and production process of environment-friendly water-soluble cloth, which comprises the following specific steps: the method comprises the steps of preparing polyvinyl alcohol, carrying out primary purification, then carrying out spinning stock solution preparation, mixing, filtering and defoaming to obtain raw material spinning stock solution, carrying out spinning and solidification on the stock solution, heating and stretching solidified fibers, and finally obtaining the environment-friendly water-soluble cloth by a solvent bonding method through water-soluble polyvinyl alcohol spinning.
Description
Technical Field
The invention belongs to the technical field of material preparation, and relates to a processing and production process of environment-friendly water-soluble cloth.
Background
The water soluble cloth is also called non-woven embroidered cloth, and is non-woven lining cloth capable of dissolving in warm water. Polyvinyl alcohol fiber without acetalization is used as raw material, and dry-laid web formation and solvent bonding are adopted to fix the web. The water-soluble fabric is mainly used as a lining material during embroidering and can also be used for manufacturing decorative paper flowers, the existing water-soluble fabric is low in quality, poor in strength and easy to break, the product manufactured by the existing water-soluble fabric is poor in quality and short in service life, and meanwhile, the existing water-soluble fabric manufacturing and production process is complex in steps and high in production cost.
Disclosure of Invention
The invention aims to provide a processing and production process of environment-friendly water-soluble cloth.
The purpose of the invention can be realized by the following technical scheme:
the processing and production process of the environment-friendly water-soluble cloth is characterized by comprising the following specific steps of:
the first step, preparing polyvinyl alcohol, the concrete preparation process is:
(1) continuously introducing liquid acetic acid into a vaporizer for vaporization, introducing vaporized acetic acid into ethylene, and mixing to keep a certain ratio of the two;
(2) introducing mixed gas of acetic acid and ethylene into a preheating pipe for preheating, introducing the preheated mixed gas of acetic acid and ethylene into a tubular fixed bed reactor, performing pressurized reaction at a certain temperature by using palladium-gold as a catalyst and activated alumina as a carrier to obtain vinyl acetate;
(3) placing the vinyl acetate obtained in the step (2) under ultraviolet rays for irradiation, and further obtaining polyvinyl acetate;
(4) and (4) introducing the polyvinyl acetate obtained in the step (3) into a methanol solution containing sodium hydroxide to obtain polyvinyl alcohol.
Secondly, washing and dehydrating the prepared polyvinyl alcohol to prepare refined polyvinyl alcohol;
thirdly, feeding the polyvinyl alcohol obtained in the second step into a dissolving machine, and dissolving the polyvinyl alcohol by hot water to prepare spinning solution with a certain concentration;
fourthly, mixing the polyvinyl alcohol spinning solution obtained in the third step at a constant temperature, and then filtering the mixed solution by a plate-and-frame filter press;
fifthly, leading the polyvinyl alcohol spinning solution filtered in the fourth step into a defoaming machine, and defoaming for a period of time at normal pressure and still at a certain temperature;
sixthly, the polyvinyl alcohol spinning solution obtained in the fifth step is sent to a spinning machine, distributed to each spinning position by a liquid supply pipeline, sent to a spinning nozzle through a metering pump and a candle filter, sprayed into hot air through a spinning hole, and evaporated and solidified to form nascent fiber;
seventhly, guiding the nascent fiber obtained in the sixth step into a stretcher for stretching, then guiding the nascent fiber into a stretching drying bin for heat treatment, oiling, drying, cooling and humidifying to obtain water-soluble polyvinyl alcohol spinning;
and eighthly, obtaining the water-soluble cloth by the obtained water-soluble polyvinyl alcohol spinning through a solvent bonding method.
Further, the certain temperature in the first step 2 is specifically 100 ℃ or higher.
Further, the spinning solution with a certain concentration in the third step is specifically a spinning solution with a concentration of 30-40%.
Further, the constant temperature in the fourth step is specifically 96 to 98 ℃.
Further, in the fifth step, the certain temperature is 98 ℃, and the period of time is 4-6 hours.
Further, the stretching mode in the seventh step is specifically a multistage stretching mode.
The invention has the beneficial effects that:
the processing technology of the water-soluble cloth is simple and uncomplicated, the production efficiency is high, the water-soluble cloth has stronger breaking strength, the strength is high, the water-soluble cloth is easy to damage and break, the strength of a product manufactured by the water-soluble cloth is high, the service life is long, and meanwhile, the elongation at break is low, so that the water-soluble cloth has smaller shrinkage rate, is not easy to shrink and deform, has better quality and lower temperature of dissolution and breaking, and is convenient to decompose, save energy and protect environment.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a structural formula of a preparation reaction of the water-soluble cloth.
Detailed Description
Example 1:
the processing and production process of the environment-friendly water-soluble cloth is characterized by comprising the following specific steps of:
the first step, preparing polyvinyl alcohol, the concrete preparation process is:
(1) continuously introducing liquid acetic acid into a vaporizer for vaporization, introducing vaporized acetic acid into ethylene, and mixing to keep a certain ratio of the two;
(2) introducing mixed gas of acetic acid and ethylene into a preheating pipe for preheating, introducing the preheated mixed gas of acetic acid and ethylene into a tubular fixed bed reactor, performing pressure reaction at a temperature of more than 100 ℃ by taking palladium-gold as a catalyst and active alumina as a carrier to obtain vinyl acetate;
(3) placing the vinyl acetate obtained in the step (2) under ultraviolet rays for irradiation, and further obtaining polyvinyl acetate;
(4) and (4) introducing the polyvinyl acetate obtained in the step (3) into a methanol solution containing sodium hydroxide to obtain polyvinyl alcohol.
Secondly, washing and dehydrating the prepared polyvinyl alcohol to prepare refined polyvinyl alcohol;
thirdly, feeding the polyvinyl alcohol obtained in the second step into a dissolving machine, and dissolving the polyvinyl alcohol by hot water to prepare spinning solution with the concentration of 30-40%;
fourthly, mixing the polyvinyl alcohol spinning solution obtained in the third step at 96-98 ℃, and then filtering through a plate and frame filter press;
fifthly, leading the filtered polyvinyl alcohol spinning solution in the fourth step into a defoaming machine, and defoaming for 4-6h at normal pressure and at 98 ℃;
sixthly, the polyvinyl alcohol spinning solution obtained in the fifth step is sent to a spinning machine, distributed to each spinning position by a liquid supply pipeline, sent to a spinning nozzle through a metering pump and a candle filter, sprayed into hot air through a spinning hole, and evaporated and solidified to form nascent fiber;
seventhly, introducing the nascent fiber obtained in the sixth step into a stretcher for graded stretching, then introducing the nascent fiber into a stretching drying bin for heat treatment, oiling, drying, cooling and humidifying to obtain water-soluble polyvinyl alcohol spinning;
and eighthly, obtaining the water-soluble cloth by the obtained water-soluble polyvinyl alcohol spinning through a solvent bonding method.
Example 2:
the processing and production process of the environment-friendly water-soluble cloth is characterized by comprising the following specific steps of:
the first step, preparing polyvinyl alcohol, the concrete preparation process is:
(1) continuously introducing liquid acetic acid into a vaporizer for vaporization, introducing vaporized acetic acid into ethylene, and mixing to keep a certain ratio of the two;
(2) introducing mixed gas of acetic acid and ethylene into a preheating pipe for preheating, introducing the preheated mixed gas of acetic acid and ethylene into a tubular fixed bed reactor, performing pressurized reaction at a temperature of more than 100 ℃ by using palladium-gold as a catalyst and activated alumina as a carrier to obtain vinyl acetate;
(3) placing the vinyl acetate obtained in the step (2) under ultraviolet rays for irradiation, and further obtaining polyvinyl acetate;
(4) and (4) introducing the polyvinyl acetate obtained in the step (3) into a methanol solution containing sodium hydroxide to obtain polyvinyl alcohol.
Secondly, washing and dehydrating the prepared polyvinyl alcohol to prepare refined polyvinyl alcohol;
thirdly, feeding the polyvinyl alcohol obtained in the second step into a dissolving machine, and dissolving the polyvinyl alcohol by hot water to prepare a spinning solution with the concentration of 20-30%;
fourthly, mixing the polyvinyl alcohol spinning solution obtained in the third step at 90 ℃, and then filtering the mixed solution by a plate-and-frame filter press;
fifthly, leading the polyvinyl alcohol spinning solution filtered in the fourth step into a defoaming machine, and defoaming for 7 hours at normal pressure and at 90 ℃;
sixthly, the polyvinyl alcohol spinning solution obtained in the fifth step is sent to a spinning machine, distributed to each spinning position by a liquid supply pipeline, sent to a spinning nozzle through a metering pump and a candle filter, sprayed into hot air through a spinning hole, and evaporated and solidified to form nascent fiber;
seventhly, guiding the nascent fiber obtained in the sixth step into a stretcher for stretching, then guiding the nascent fiber into a stretching drying bin for heat treatment, oiling, drying, cooling and humidifying to obtain water-soluble polyvinyl alcohol spinning;
and eighthly, obtaining the water-soluble cloth by the obtained water-soluble polyvinyl alcohol spinning through a solvent bonding method.
Comparative example 1:
the preparation process of the water-soluble polyvinyl alcohol fiber comprises the following steps: preparation of spinning dope, wet spinning, heat treatment process and spinning post-treatment, wherein
The heat treatment process comprises the following steps:
(1) washing with water: the fiber and soft water are in countercurrent contact in a washing tank by adopting a countercurrent washing method, the washing temperature is controlled to be 20-40 ℃, and the mirabilite attachment rate of the fiber after washing is less than or equal to 1%;
(2) pretreatment: the fiber is pretreated by adopting a high-temperature-resistant water-soluble oil agent, so that the fiber meets the process requirement of a heat treatment process;
(3) and (3) drying: removing 60-70% of water contained in the fiber;
(4) dry heat stretching and shaping: preheating the dried fiber, performing dry heat stretching, and then performing heat setting treatment, wherein the dry heat stretching is 1-2 times, the heat setting temperature is 220-280 ℃, and the heat setting time is 1-5 minutes;
the spinning post-treatment process comprises the following steps:
1) oiling: oiling the fibers by an oiling machine;
2) curling: a mechanical crimping process is used. After oiling, the fiber is subjected to leveling pretreatment and is mechanically crimped by a mechanical crimping machine.
In the above-mentioned drying process, the fibers are dried under tension.
And (3) performance testing:
the water-soluble cloths prepared in examples 1-2 and comparative example 1 were subjected to the following tests of breaking strength, breaking elongation, and water-soluble temperature:
table 1: test results of Water-soluble cloths prepared in examples 1-2 and comparative example 1
| Serial number | Item | Example 1 | Example 2 | Comparative example 1 | Index (I) |
| 1 | Breaking Strength, cN/dtex | 7.5 | 5.0 | 5.0 | 3.2 |
| 2 | Elongation at break,% | 8-18 | 20-25 | 10-20 | 27±7 |
| 3 | Dissolution temperature,. degree.C | 75-88 | 85-91 | 85-90 | 94.0 |
As can be seen from Table 1, all indexes of comparative example 1 are superior to normal indexes, which shows that comparative example 1 has certain advantages, example 2 is the same as comparative example 1 in terms of breaking strength, the elongation at break is higher than that of comparative example 1 and lower than that of normal indexes, and the temperature at which the fabric is dissolved is slightly lower than that of comparative example 1 and is higher than that of normal indexes, and the results of example 2 and example 1 show that the production process of the invention has certain excellent effects, and the results of example 1, example 2 and comparative example 1 show that example 1, which is the optimal embodiment of the invention, has stronger breaking strength, which shows that the water-soluble fabric of the invention has higher strength, is more unlikely to break, has lower elongation at break, and shows that the invention has lower shrinkage, lower temperature at which the fabric is dissolved and better quality.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The processing and production process of the environment-friendly water-soluble cloth is characterized by comprising the following specific steps of:
the first step, preparing polyvinyl alcohol, the concrete preparation process is:
(1) continuously introducing liquid acetic acid into a vaporizer for vaporization, introducing vaporized acetic acid into ethylene, and mixing to keep a certain ratio of the two;
(2) introducing mixed gas of acetic acid and ethylene into a preheating pipe for preheating, introducing the preheated mixed gas of acetic acid and ethylene into a tubular fixed bed reactor, performing pressurized reaction at a certain temperature by using palladium-gold as a catalyst and activated alumina as a carrier to obtain vinyl acetate;
(3) placing the vinyl acetate obtained in the step (2) under ultraviolet rays for irradiation, and further obtaining polyvinyl acetate;
(4) and (4) introducing the polyvinyl acetate obtained in the step (3) into a methanol solution containing sodium hydroxide to obtain polyvinyl alcohol.
Secondly, washing and dehydrating the prepared polyvinyl alcohol to prepare refined polyvinyl alcohol;
thirdly, feeding the polyvinyl alcohol obtained in the second step into a dissolving machine, and dissolving the polyvinyl alcohol by hot water to prepare spinning solution with a certain concentration;
fourthly, mixing the polyvinyl alcohol spinning solution obtained in the third step at a constant temperature, and then filtering the mixed solution by a plate-and-frame filter press;
fifthly, leading the polyvinyl alcohol spinning solution filtered in the fourth step into a defoaming machine, and defoaming for a period of time at normal pressure and still at a certain temperature;
sixthly, the polyvinyl alcohol spinning solution obtained in the fifth step is sent to a spinning machine, distributed to each spinning position by a liquid supply pipeline, sent to a spinning nozzle through a metering pump and a candle filter, sprayed into hot air through a spinning hole, and evaporated and solidified to form nascent fiber;
seventhly, guiding the nascent fiber obtained in the sixth step into a stretcher for stretching, then guiding the nascent fiber into a stretching drying bin for heat treatment, oiling, drying, cooling and humidifying to obtain water-soluble polyvinyl alcohol spinning;
and eighthly, obtaining the water-soluble cloth by the obtained water-soluble polyvinyl alcohol spinning through a solvent bonding method.
2. The processing and production process of the environment-friendly water-soluble cloth according to claim 1, wherein the certain temperature in the first step 2 is more than 100 ℃.
3. The processing and production process of the environment-friendly water-soluble cloth as claimed in claim 1, wherein the spinning solution with a certain concentration in the third step is a spinning solution with a concentration of 30-40%.
4. The processing and production process of the environment-friendly water-soluble cloth as claimed in claim 1, wherein the constant temperature in the fourth step is 96-98 ℃.
5. The processing and production process of the environment-friendly water-soluble cloth according to claim 1, wherein in the fifth step, the certain temperature is 98 ℃ specifically, and the period of time is 4-6 hours specifically.
6. The processing and production process of the environment-friendly water-soluble cloth according to claim 1, wherein the stretching mode in the seventh step is a multistage stretching mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140250.0A CN113417068A (en) | 2020-03-03 | 2020-03-03 | Processing and production process of environment-friendly water-soluble cloth |
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| CN202010140250.0A CN113417068A (en) | 2020-03-03 | 2020-03-03 | Processing and production process of environment-friendly water-soluble cloth |
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| CN113417068A true CN113417068A (en) | 2021-09-21 |
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| CN202010140250.0A Pending CN113417068A (en) | 2020-03-03 | 2020-03-03 | Processing and production process of environment-friendly water-soluble cloth |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936198A (en) * | 2012-10-12 | 2013-02-20 | 天津大学 | Vinyl acetate production method |
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- 2020-03-03 CN CN202010140250.0A patent/CN113417068A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936198A (en) * | 2012-10-12 | 2013-02-20 | 天津大学 | Vinyl acetate production method |
Non-Patent Citations (3)
| Title |
|---|
| HTTPS://WENKU.BAIDU.COM/VIEW/8F55EC0F9B6648D7C1C746F5.HTML: "聚乙烯醇纤维", 《百度文库》 * |
| 刘炳义: "《中国石油化工商品手册》", 31 March 2000 * |
| 梅自强: "《纺织辞典》", 31 January 2007, 中国纺织出版社 * |
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Application publication date: 20210921 |