CN101849717A - Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide - Google Patents
Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide Download PDFInfo
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- CN101849717A CN101849717A CN200910048520A CN200910048520A CN101849717A CN 101849717 A CN101849717 A CN 101849717A CN 200910048520 A CN200910048520 A CN 200910048520A CN 200910048520 A CN200910048520 A CN 200910048520A CN 101849717 A CN101849717 A CN 101849717A
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Abstract
The invention provides a process for producing knitted and dipped PU (polyurethane) gloves. The process comprises the following steps of: dipping knitted gloves into a solvent, wherein the solvent is prepared from polyurethane resin and DMSO (dimethyl sulfoxide) according to the proportion of 1:1.4-1:1.9, the solvent temperature is maintained to be higher than 20 DEG C, and the polyurethane resin is synthesized by the participation of dimethyl sulfoxide; carrying out water bath treatment on the dipped knitted gloves; drying the knitted gloves subjected to the water bath treatment, wherein the drying time is for 50-60 min, and the drying temperature is 100-110 DEG C; and recycling the DMSO in the solvent from the water in the water bath with a vacuum depressurization method. The invention also provides a solvent for the process for producing the knitted and dipped PU gloves, wherein the solvent is prepared from the polyurethane resin and the DMSO according to the proportion. The invention also provides gloves produced by using the process for producing knitted and dipped PU gloves.
Description
Technical field
The present invention relates to a kind of process for producing knitted and dipped PU (polyurethane) gloves, especially a kind of use dimethyl sulfoxide (DMSO) (DMSO) replaces dimethyl formamide (DMF) to produce the technology of knitted and dipped PU (polyurethane) gloves as solvent.
Background technology
With knitting inner bag gloves is the security protection gloves of base material dipping PU resin, with its rubber shoe latex layer approach, wear with comfortable, have grease proofing preferably, anti-wear performance, a low cost and other advantages, become the staple product in the safety gloves of international market, volume of production and marketing constantly rises in recent years.But produce this kind PU dipping gloves, need to use dimethyl formamide (DMF) as solvent, and DMF has higher toxicity, residual as DMF is arranged in the gloves, dress the back Diazolidinyl Urea; Simultaneously, because of using DMF, will impact aborning the enterprise employee health protection as solvent.Because PU dipping gloves use DMF to have above defective, European Union determines, since in May, 2009, bans use of the product of making solvent with DMF, comprises the gloves product, and this will bring tremendous influence to gloves plant produced, outlet.
Simultaneously, DMF also brings harm to health of operators in removal process, and the rate of recovery is limited in the traditional handicraft in addition, not only pollutes the thing discharging, can not effectively reduce production costs.
Use is made solvent by the synthetic polyurethane resin of DMSO (dimethyl sulfoxide (DMSO)) with DMSO, in 1: the solution of 1.4-1.9 ratio preparation, DMSO in this solution (dimethyl sulfoxide (DMSO)), nontoxic to human body, can be fused with water and most organic solvent, can be directly used in the raw material and the carrier of some drugs or be added in the medicine in medical industry, but DMSO (dimethyl sulfoxide (DMSO)) is because the viscosity height, compatibility that uses in the production of PU dipping gloves and solubility performance are not as good as DMF.In addition, the solution solidification point of dimethyl sulfoxide (DMSO) preparation is lower than this temperature livering just takes place at 18-19 ℃, is unfavorable for that existing equipment uses.
Summary of the invention
The object of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves, it adopts dimethyl sulfoxide (DMSO) preparation solvent to produce the PU gloves.Dimethyl sulfoxide (DMSO) is nontoxic substantially, is used to replace poisonous dimethyl formamide (DMF), and the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.This technical maturity, stable has good economic benefit.
Another purpose of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves, it adopts dimethyl sulfoxide (DMSO) preparation solvent to produce the PU gloves, overcome the high viscosity that makes solvent, livering does not take place in the production process, obtained the unification of product quality and economic benefit, stable processing technique, reliable.
Another purpose of the present invention is to provide a kind of process for producing knitted and dipped PU (polyurethane) gloves, and it effectively reclaims solvent after production process finishes, thereby reduces production costs, and reduces the discharging of pollutant.
Another purpose of the present invention is to provide a kind of solvent that is used for process for producing knitted and dipped PU (polyurethane) gloves; it adopts DMSO (dimethyl sulfoxide (DMSO)) preparation; be used to replace poisonous dimethyl formamide (DMF); the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.
Another purpose of the present invention is to provide a kind of knitted and dipped PU (polyurethane) gloves, does not use poisonous dimethyl formamide (DMF) in its production process, and the skin that can avoid the PU gloves that make to stimulate the user protects simultaneously that employee's in the production process is healthy.
For reaching above purpose, the invention provides a kind of process for producing knitted and dipped PU (polyurethane) gloves, comprising:
Knitted gloves is impregnated in the solvent, and wherein, this solvent is prepared in 1: 1.4～1: 1.9 ratio by polyurethane resin and DMSO (dimethyl sulfoxide (DMSO)), and keeps this solvent temperature to be higher than 20 ℃, and wherein, this polyurethane resin is participated in synthetic by dimethyl sulfoxide (DMSO);
This knitted gloves behind the dipping is carried out water bath processing;
This knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110; And
From the water-bath water, reclaim DMSO (dimethyl sulfoxide (DMSO)) in this solvent with the vacuum decompression method.
The present invention provides a kind of solvent that is used for this process for producing knitted and dipped PU (polyurethane) gloves simultaneously, is prepared in proportion by polyurethane resin and DMSO (dimethyl sulfoxide (DMSO)).
The present invention provides a kind of usefulness gloves that above-mentioned process for producing knitted and dipped PU (polyurethane) gloves makes simultaneously.
These purposes of the present invention, characteristics and advantage will be below the specific embodiment and claim in detailed exposure.
The specific embodiment
The present invention is a kind of process for producing knitted and dipped PU (polyurethane) gloves, comprising:
Knitted gloves is impregnated in the solution, and wherein, this solvent is prepared in proportion by polyurethane resin and DMSO (dimethyl sulfoxide (DMSO)); And
This knitted gloves behind the dipping is carried out water bath processing.
Particularly, in this solution, polyurethane resin and DMSO (dimethyl sulfoxide (DMSO)) configuration proportion is preferably 1: 1.4～and 1: 1.9, this solution viscosity for preparing is preferably 500～600 ambers.Control suitable viscosity and make that gloves are easier in process of production and from this solvent, take out, improve the adsorptivity of this solvent, alleviate the workload of subsequent recovery.
Particularly, this polyurethane resin is participated in synthetic by dimethyl sulfoxide (DMSO).Can not directly apply in the production process of this knitted and dipped PU (polyurethane) gloves by the synthetic polyurethane resin that obtains, must be diluted,, guarantee again effectively to be adsorbed onto on this knitted gloves simultaneously, guarantee the quality of product to increase flowability.The present invention adopts synthetic this polyurethane resin of dimethyl sulfoxide (DMSO) through a large amount of experiments and adjustment, dilutes with dimethyl sulfoxide (DMSO) again, and an optimized proportion scope is provided.
This knitted gloves is nylon or dacron thread knitted gloves.Particularly, flood these gloves and comprise: soaking paste 10～60 seconds, and drenched slurry 1～10 minute.Because this solvent viscosity is higher, help the technology of the present invention with respect to original employing DMF, prolonged the pouring slurry time, further to improve the quality of products and the economic benefit of technology.
The purpose of water bath processing is to solidify this knitted gloves, displaces the solvent on this knitted gloves, simultaneously this knitted gloves is cleaned.Particularly, water bath processing is carried out in three tanks successively, and wherein, the first groove water temperature is 30～35 ℃, second and the three-flute water temperature be 50～55 ℃.
Process for producing knitted and dipped PU (polyurethane) gloves step provided by the invention is simple, uses DMSO (dimethyl sulfoxide (DMSO)) preparation solvent, and safety and Health can not cause damage to the operative employee in user and the production process.Simultaneously, through checking repeatedly, this process for producing knitted and dipped PU (polyurethane) gloves is reliable and stable, can guarantee to make product quality, is suitable for promoting on a large scale.
This process for producing knitted and dipped PU (polyurethane) gloves further comprises:
From the water-bath water, reclaim DMSO (dimethyl sulfoxide (DMSO)) in this solvent with the vacuum decompression method.
The height of the rate of recovery has directly determined the economic benefit of technology, and unrenewable solvent is wasted, and also can pollute environment after the discharging simultaneously.In addition, when solvent boiling point is higher, it is reclaimed meeting consume a large amount of heats, improved production cost, also not environmental protection.The present invention adopts vacuum decompression, can reduce the recovery heating-up temperature, guarantees to reclaim material quality and improves the recovery safety coefficient.
The solvent that process for producing knitted and dipped PU (polyurethane) gloves provided by the invention uses is as DMSO (dimethyl sulfoxide (DMSO)), and is pollution-free, more further reduced at waste discharge after recycling, and helps protecting environment, reduces production costs simultaneously.
This process for producing knitted and dipped PU (polyurethane) gloves further comprises:
This knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110 ℃.
By this solvent solidification point of dimethyl sulfoxide (DMSO) preparation at 18-19 ℃, be lower than this temperature livering just takes place, therefore with this polyurethane fat resin solvent of producing, must guarantee liquid in preservation and produce in the preparation slurry and dipping process of this knitted gloves, temperature guarantees more than 20 ℃.For this reason, the present invention when being lower than 20 ℃ of temperature, adopts vessel insulation to this solvent, and increased at proportioning room, conveyance conduit heat, attemperator, to guarantee not livering of liquid.Particularly, the present invention further comprises: keep this solvent temperature to be higher than 20 ℃.
After using this solvent synthesizing polyurethane resin and being configured to solution, in producing PU dipping gloves process, by repeatedly water-bath, baking operation, produce PU dipping gloves after, substantially it is residual not have DMSO (dimethyl sulfoxide (DMSO)) in the product, and human body skin is not had excitant and corrosiveness.But this solution viscosity height need Comparative Examples make adjustment when configuration solution, and pass through aborning dipping stock tank and the control of impregnation room temperature, and the timely adjustment solution viscosity is to reach the purpose of ordinary production.Particularly, because this solvent viscosity height of the present invention just strengthens solvent ratios when configuration, generally than the high 5-10% of polyurethane resin ratio that uses the DMF configuration, and improve production equipments such as dripping stock tank, lengthening drenches the slurry time.
Below for according to a preferred embodiment of the present invention:
1,1 part of polyurethane resin, DMSO (dimethyl sulfoxide (DMSO)) stir for 1.6 parts, park 4 hours stand-by;
2, use nylon or dacron thread knitted gloves base to make carrier;
3, resin viscosity 500～600 ambers that prepare;
4, the gloves base is enclosed within resin pickup on the fingerprint (soaking paste 20～30 seconds, pouring slurry 5 minutes);
5, soaking paste is good gloves steep in three to four tanks successively: 30～35 ℃ of the first groove water temperatures, second and 50～55 ℃ of three-flute water temperatures;
6, the PU dipping gloves that soak water advanced oven for drying 50～60 minutes, 100～110 ℃ of oven temperatures;
7, the PU gloves are taken off from fingerprint in the oven dry back;
8, check, packing, warehouse-in;
9, the waste water that soaks tank behind the resin pickup reclaims DMSO (dimethyl sulfoxide (DMSO)) solvent by retracting device.
By the foregoing description, purpose of the present invention is by in full force and effect having reached.The personage who is familiar with this skill should be understood that the content that the present invention includes but be not limited to describe in the top specific embodiment.Any modification that does not depart from function of the present invention and structural principle all will be included in the scope of claims.
Claims (10)
1. process for producing knitted and dipped PU (polyurethane) gloves comprises:
Knitted gloves is impregnated in the solvent, and wherein, this solvent is by polyurethane resin and dimethyl sulfoxide (DMSO) preparation in 1: 1.4 in proportion～1: 1.9; And
This knitted gloves behind the dipping is carried out water bath processing.
2. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1, wherein, this polyurethane resin is participated in synthetic by dimethyl sulfoxide (DMSO).
3. process for producing knitted and dipped PU (polyurethane) gloves according to claim 2, wherein, flood these gloves and comprise: soaking paste 10～60 seconds, and drenched slurry 1～10 minute.
4. process for producing knitted and dipped PU (polyurethane) gloves according to claim 3, wherein, water bath processing is carried out in three tanks successively, wherein, the first groove water temperature is 30～35 ℃, second and the three-flute water temperature be 50～55 ℃.
5. process for producing knitted and dipped PU (polyurethane) gloves according to claim 4 further comprises: this knitted gloves after the water bath processing is dried, and wherein, drying time is 50～60 minutes, and bake out temperature is 100～110 ℃.
6. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1 further comprises: usefulness vacuum decompression method reclaims the dimethyl sulfoxide (DMSO) in this solvent from the water-bath water.
7. process for producing knitted and dipped PU (polyurethane) gloves according to claim 5 further comprises: usefulness vacuum decompression method reclaims the dimethyl sulfoxide (DMSO) in this solvent from the water-bath water.
8. process for producing knitted and dipped PU (polyurethane) gloves according to claim 1 further comprises: keep this solvent temperature to be higher than 20 ℃.
9. knitted and dipped PU (polyurethane) gloves of producing according to claim 1,2,3,4,5,6,7 or 8 described process for producing knitted and dipped PU (polyurethane) gloves.
10. a solvent that is used for process for producing knitted and dipped PU (polyurethane) gloves was prepared by polyurethane resin and dimethyl sulfoxide (DMSO) in 1: 1.4 in proportion～1: 1.9, and wherein, this polyurethane resin is participated in synthetic by dimethyl sulfoxide (DMSO).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048520A CN101849717A (en) | 2009-03-30 | 2009-03-30 | Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide |
| US12/418,254 US8241705B2 (en) | 2009-03-30 | 2009-04-03 | Process for producing polyurethane coated gloves |
| EP09251530A EP2220952A1 (en) | 2009-03-30 | 2009-06-11 | Process for producing polyurethane coated gloves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910048520A CN101849717A (en) | 2009-03-30 | 2009-03-30 | Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101849717A true CN101849717A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910048520A Pending CN101849717A (en) | 2009-03-30 | 2009-03-30 | Process for producing knitted and dipped PU (polyurethane) gloves by using dimethyl sulfoxide |
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| CN (1) | CN101849717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702948A (en) * | 2012-05-29 | 2012-10-03 | 绍兴金隆机械制造有限公司 | Preparation method of superhydrophobic glove coating and method for producing glove |
| CN104558655A (en) * | 2013-10-23 | 2015-04-29 | 株式会社兄弟贸易 | Manufacturing method of polyurethane coated gloves |
| CN113558315A (en) * | 2021-05-12 | 2021-10-29 | 汇鸿(南通)安全用品有限公司 | Production method of environment-friendly oily PU resin impregnated gloves |
-
2009
- 2009-03-30 CN CN200910048520A patent/CN101849717A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702948A (en) * | 2012-05-29 | 2012-10-03 | 绍兴金隆机械制造有限公司 | Preparation method of superhydrophobic glove coating and method for producing glove |
| CN104558655A (en) * | 2013-10-23 | 2015-04-29 | 株式会社兄弟贸易 | Manufacturing method of polyurethane coated gloves |
| CN113558315A (en) * | 2021-05-12 | 2021-10-29 | 汇鸿(南通)安全用品有限公司 | Production method of environment-friendly oily PU resin impregnated gloves |
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Application publication date: 20101006 |