CN113858514B - Production method of nitrile latex gloves with stable performance - Google Patents
Production method of nitrile latex gloves with stable performance Download PDFInfo
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- CN113858514B CN113858514B CN202111066271.3A CN202111066271A CN113858514B CN 113858514 B CN113858514 B CN 113858514B CN 202111066271 A CN202111066271 A CN 202111066271A CN 113858514 B CN113858514 B CN 113858514B
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- 229920000126 latex Polymers 0.000 title claims abstract description 155
- 239000004816 latex Substances 0.000 title claims abstract description 154
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 150000002825 nitriles Chemical class 0.000 title claims abstract description 33
- 238000007598 dipping method Methods 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000005406 washing Methods 0.000 claims abstract description 19
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000001502 supplementing effect Effects 0.000 claims abstract description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000460 chlorine Substances 0.000 claims abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 6
- 238000009957 hemming Methods 0.000 claims abstract description 6
- 238000002386 leaching Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 45
- 239000006185 dispersion Substances 0.000 claims description 23
- 239000003292 glue Substances 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000005060 rubber Substances 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 2
- 239000013538 functional additive Substances 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 abstract description 18
- 229920000459 Nitrile rubber Polymers 0.000 description 14
- 239000000047 product Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 7
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 6
- 238000000498 ball milling Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- MOMKYJPSVWEWPM-UHFFFAOYSA-N 4-(chloromethyl)-2-(4-methylphenyl)-1,3-thiazole Chemical compound C1=CC(C)=CC=C1C1=NC(CCl)=CS1 MOMKYJPSVWEWPM-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003811 curling process Effects 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- -1 inorganic compound zinc oxide Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 235000019983 sodium metaphosphate Nutrition 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1815—Cooling or heating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/36—Feeding the material on to the mould, core or other substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4842—Outerwear
- B29L2031/4864—Gloves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Gloves (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a production method of a nitrile latex glove with stable performance, which improves the production efficiency of the nitrile latex glove, reduces the cost and is stable and reliable. The method comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and a pre-vulcanized latex preparation unit for providing latex for the latex dipping of the glove mold latex dipping unit, wherein after the glove is demolded, the mold of the glove returns to the ceramic glove mold cleaning unit to enter a production process flow circulation, the glove is inspected, boxed and put in storage after being treated by the post-treatment unit, and an automatic liquid supplementing and liquid level control system is arranged in a latex dipping tank of the glove mold latex dipping unit; the preparation unit of the pre-vulcanized latex is provided with a grinding and dispersing device for the auxiliary agent for the nitrile latex with controllable temperature.
Description
Technical Field
The invention relates to a production method of nitrile latex gloves, in particular to a production method of nitrile latex gloves with stable performance.
Background
With the rapid development of economy and society, people are continuously pursuing high-quality living standard, and high-tech products are layered endlessly. And the precision requirements of people on high-tech products are also higher and higher, and many products need to be tested and produced in a dust-free room. The glove is particularly important as a protective article, so that the precision of a product in the production process can be ensured, and the safety of production personnel can be protected. Common glove types are numerous and mainly include: leather gloves, cloth gloves, specialty gloves, and latex gloves. Among them, latex gloves are increasingly taking an important role in glove products by virtue of the advantages of abrasion resistance, puncture resistance, slip resistance, oil resistance, and the like in the fields of medical treatment, food, beauty treatment, electronics, photovoltaics, and the like, and it is reported that about 600 hundred million latex gloves are consumed annually worldwide. The nitrile rubber is a copolymer polymerized by acrylonitrile and butadiene monomers, and is produced by adopting a low-temperature emulsion polymerization method. Because the nitrile rubber has cyano groups in the molecular chain, the nitrile rubber has stronger polarity and excellent oil resistance. The nitrile rubber has good heat resistance and can be used for a long time under the condition of 120 ℃. The nitrile rubber also has good mechanical properties and chemical resistance to benzene, petroleum base oil, nonpolar solvents and the like, so the nitrile rubber is very suitable for being used in the scientific research field. Nitrile rubbers are classified into ultra-high, medium-low acrylonitrile rubbers according to the level of Acrylonitrile (ACN) content. With the increase of the acrylonitrile content, the polarity of the nitrile rubber is enhanced, the interaction force between chains is increased, the flexibility of the chains is reduced, the double bond content in the molecular chains is reduced, the oil resistance, the air tightness and the wear resistance of the nitrile rubber are improved, and the processability and the cold resistance are reduced. Therefore, the nitrile rubber has the advantages of good chemical corrosion resistance, organic solvent resistance and the like because of containing the strong-polarity acrylonitrile unit, and is widely applied to the field of daily protective gloves. Meanwhile, in the rubber latex glove, the nitrile latex glove is gradually replacing the natural latex glove due to the high cost of producing the natural latex glove and the fact that the natural latex contains protein, so that the natural latex is easy to cause allergy of partial people. The nitrile rubber latex glove is nontoxic, harmless, firm and durable, has little harm to human skin and good adhesion, and can be widely applied to factories such as electronics, chemical industry, food and the like, hospitals, scientific research and the like. The nitrile rubber latex glove is prepared by dipping nitrile rubber latex into a hand-type ceramic glove mold, the existing production method mainly comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and the like, wherein the glove mold returns to the ceramic glove mold cleaning unit to enter the production process after demolding, the glove mold latex dipping unit is also connected with a pre-vulcanized latex preparation unit to provide latex for dipping, and the glove can be packaged, inspected and put in storage after being treated by the post-treatment unit.
In the existing production process flow, each unit may affect the production stability, production efficiency and product quality, and there are a lot of problems to be solved urgently, wherein the structure of the dipping tank of the glove mold dipping unit and the auxiliary agent grinding and dispersing device of the pre-vulcanized latex preparation unit have a large influence on the performance stability of the glove product, and the following problems still exist at present:
Glove mold latex dipping unit: in the actual production process, the height of the latex liquid level in the latex dipping unit dipping tank of the glove mold has great influence on the subsequent curling link, and the latex liquid level gradually drops along with the repeated carrying of the latex in the dipping tank by the mold. When the latex level is below a certain level, a series of quality problems (e.g., insufficient curling, etc.) occur with latex gloves. The traditional solution is to arrange special personnel to record the liquid level condition of the latex and control the valve scale of the latex injection dipping tank, and the problems generated in the production process are mainly as follows: the operation of the gum dipping tank of the production line is maintained, a large number of hands are needed, and the cost of the people is high; the latex liquid level height is controlled only by a manual mode, so that the stability of the quality of the latex glove in continuous production cannot be ensured; the quality problem of latex gloves caused by fluctuation of the latex liquid level in the latex feeding process, and the like, therefore, a system for automatically replenishing liquid and controlling the liquid level in a latex dipping tank of a latex dipping unit of a glove mold needs to be developed, so that the position of the latex liquid level is automatically controlled, meanwhile, the latex is kept in a stable state relatively, and finally, the stability of the quality of latex products is improved.
A pre-vulcanized latex preparation unit: the preparation process of the nitrile rubber glove mainly uses nitrile latex for vulcanization molding, and inorganic compound zinc oxide is required to be used as a vulcanization active agent in a nitrile latex formula system, and simultaneously, organic compounds such as a vulcanization accelerator, an anti-aging agent and the like are also required to be used; in addition, it is also possible to use organic dispersants, inorganic pigments, etc. Therefore, the multicomponent compounds and the property differences (organic and inorganic compounds, density, particle size, etc.) among them in the nitrile latex formulation system lead to the most basic condition that when they are mixed to prepare the functional auxiliary aqueous dispersion for nitrile latex, it is desirable to reduce the auxiliary particle size and uniformly disperse by means of special equipment to achieve the purpose of uniform mixing, and at the same time, it is also desirable that the mixing time is as short as possible to improve the production efficiency. In the prior art, a stainless steel stirring ball mill in a pre-vulcanized latex preparation unit mainly comprises a stainless steel single-layer stirring ball mill shell, a screen, metal balls, a traditional stirring blade, a motor and a thermometer. In the course of preparing aqueous dispersion of functional auxiliary agent for nitrile latex by using stainless steel single-layer stirred ball mill, the mixing time is up to 6 hours due to lack of temperature control and corresponding cooling system. The longer mixing time brings the temperature rise of the mixed solution, and the mixed solution often reaches more than 50 ℃ and even 60 ℃; the higher temperature causes some organic adjuvants to agglomerate, affecting later use and final product quality. It is therefore necessary to develop a temperature-controllable grinding and dispersing device for the nitrile latex functional aid for use in the prevulcanization latex preparation unit to solve the problems of the prior art.
Therefore, aiming at the problems and the defects of the two units, a production method of the nitrile latex glove with stable performance is developed, and the production stability, the production efficiency and the product quality are improved.
Disclosure of Invention
The invention aims to solve the problems and the defects existing in the prior art, and provides a production method of the nitrile latex glove with stable performance, which realizes the efficient and stable production of functional auxiliary agent dispersion liquid for the nitrile latex, shortens the ball milling time from original 6 hours to 3 hours, further improves the production efficiency and reduces the cost; the latex liquid level position of the dipping tank is automatically controlled, the stability of the quality of latex products is finally improved, and the production method is reliable.
The invention is realized by the following technical scheme:
The invention relates to a production method of a performance stable nitrile latex glove, which comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and a pre-vulcanized latex preparation unit for providing latex for the glove mold latex dipping unit, wherein the glove mold is returned to the ceramic glove mold cleaning unit to enter a production process flow for circulation after demolding, the glove is inspected and boxed after being treated by the post-treatment unit, a latex dipping tank in the glove mold latex dipping unit is provided with an automatic fluid supplementing and liquid level control system, the glove mold latex dipping unit comprises a latex dipping tank, a latex feeding pipeline for conveying latex for the latex dipping tank, a centrifugal pump, a latex storage tank and a filter screen, the number of rubber inlets of the latex feeding pipeline for conveying latex for the latex dipping tank is two, the upper sensor is fixed at five seventh of the bottom of the dipping tank, the lower sensor is fixed at four seventh of the bottom of the dipping tank, eight baffles are arranged in the dipping tank, wherein the No.3 baffle and the No. 8 baffle are respectively positioned above two glue inlets and fixed at one seventh of the bottom of the dipping tank, the lengths of the No.3 baffle and the No. 8 baffle are one fourth of the length of the dipping tank, the No. 1 baffle and the No. 2 baffle are respectively fixed at six seventh and three seventh of the bottom of the dipping tank, the No. 4 baffle and the No. 6 baffle are respectively fixed at one sixth and three seventh of the right side of the dipping tank, 1. the lengths of the No. 2 baffle, the No. 4 baffle and the No. 6 baffle are one seventh of the length of the dipping tank, an upper sensor and a lower sensor of the liquid level meter are fixed between the No. 4 baffle and the No. 6 baffle, the No. 5 baffle is fixed on the side surface of the No. 4 baffle and extends downwards to be flush with the upper sensor, the length of the No. 5 baffle is the same as the width of the No. 4 baffle, the No. 7 baffle is fixed on the side surface of the No. 6 baffle and extends upwards to be flush with the lower sensor, and the length of the No. 7 baffle is the same as the width of the No. 6 baffle; the preparation unit of the pre-vulcanized latex is provided with a temperature-controllable auxiliary agent grinding and dispersing device for the nitrile latex, and the auxiliary agent grinding and dispersing device comprises a stirring ball mill shell, a screen, metal balls, stirring blades, a motor and a temperature control device, wherein the stirring ball mill shell is of a hollow jacket double-layer structure, the hollow jacket is connected with a circulating water temperature automatic control system through a pipeline, two ends of a fixing plate of the stirring blades are respectively provided with a group of blades, the two added groups of blades are positioned at the edge of the outermost end of the fixing plate of the stirring blades, and the structural design of the two added groups of blades is parallel to a stirring shaft of the stirring blades.
The invention further adopts the technical scheme that the automatic circulating water temperature control system consists of a water reservoir, a heat-sensitive probe, a temperature control switch, a filter and a water pump, wherein the water pump is connected with the water reservoir through a pipeline and connected with a water inlet at the lower end of a hollow jacket of a shell of the stirring ball mill through the filter and the pipeline, the upper end of the other side of the hollow jacket of the shell of the stirring ball mill is provided with a water outlet, the water outlet is connected with the water reservoir through the pipeline, and the temperature control switch is connected with the heat-sensitive probe for measuring the temperature of functional auxiliary agent aqueous dispersion liquid in the ball mill and is connected with the water pump.
According to the production method of the nitrile latex glove with stable performance, the further technical scheme can be that the temperature of the aqueous dispersion liquid of the functional auxiliary agent in the ball mill is controlled between 25 ℃ and 30 ℃.
According to the production method of the nitrile latex glove with stable performance, the further technical scheme can be that the width and the thickness of the eight baffle plates are respectively four fifths of the width of the dipping tank and fifteenth of the height of the dipping tank; the diameter of the tail end of the rubber inlet pipeline is 150 mm.
Compared with the prior art, the invention has the following beneficial effects:
The invention relates to a production method of a nitrile latex glove with stable performance, which comprises the following process flows:
The temperature-controllable nitrile latex of the pre-vulcanized latex preparation unit has the following beneficial effects generated by the auxiliary grinding and dispersing device: ① The stainless steel single-layer (without a jacket) ball mill shell is changed into a stainless steel double-layer (hollow jacket) shell, and the heat generated in the process of preparing the functional auxiliary aqueous dispersion is effectively removed by utilizing the larger contact area of the inner layer of the ball mill shell and the increased heat exchange of the circulating water system in the hollow jacket, so that the temperature of the functional auxiliary aqueous dispersion is greatly reduced, and the production efficiency is improved. ② And (3) adding a jacket circulating water temperature automatic control system: the temperature sensitive probe for measuring the temperature of the functional auxiliary agent aqueous dispersion liquid in the ball mill is connected with a circulating water switch, so that the automatic control is realized and the temperature is kept between 25 ℃ and 30 ℃. When the temperature of the dispersion liquid in the ball mill rises to 30 ℃, the jacket circulating water cooling system is automatically opened; when the temperature of the dispersion liquid in the ball mill is reduced to 25 ℃, the jacket circulating water cooling system is automatically closed. The adoption of the jacket circulating water temperature automatic control system can effectively control the temperature of dispersion liquid in the ball mill, and stabilize the quality of functional auxiliary agent aqueous dispersion liquid. ③ Improve ball mill stirring vane's structure: under the action of the existing multiple groups of stirring blades, the dispersion liquid in the ball mill mainly generates radial flow. On the basis, a group of special blade structures are added at two ends of the plurality of groups of stirring blade fixing plates, the special stirring blades are positioned at the edge of the outermost end of the blade fixing plates, the blade structures are designed to be parallel to the stirring shaft, and the axial flow of functional auxiliary agent aqueous dispersion liquid is increased when the functional auxiliary agent aqueous dispersion liquid acts. The improved stirring blade simultaneously realizes the parallel radial flow and axial flow of the dispersion liquid during ball milling, effectively improves the mixing effect and reduces the ball milling time. In summary, by improving ball milling equipment in three aspects, the efficient and stable production of the functional auxiliary agent dispersion liquid for the nitrile latex is realized, the ball milling time is shortened from original 6 hours to 3 hours, and the quality of the product in the later stage is correspondingly improved.
The glove mold latex dipping unit has the beneficial effects that the latex dipping tank is provided with an automatic liquid supplementing and liquid level control system, and the beneficial effects are as follows: the single glue inlet above the glue dipping tank is changed into the double glue inlets at the bottom of the glue dipping tank, which are respectively positioned at the left side and the right side of the bottom of the glue dipping tank, and the baffle plate is fixed above the glue inlets, so that the fluctuation of the liquid level of the latex produced in the glue feeding process is effectively eliminated, and the stability of the quality of the latex glove is improved. And an automatic liquid supplementing and liquid level control system is added: the liquid level meter is connected with a centrifugal pump in the glue inlet pipeline, so that the liquid level height of the latex is automatically controlled in a reasonable range, the curling process is stabilized, the automatic production is realized, and the production cost is reduced. Eight baffles are additionally arranged on the left side and the right side of the inside of the dipping tank, so that latex liquid level fluctuation caused by a hand mould in the latex dipping process and a rubber inlet in the rubber feeding process is reduced, the reliability of measurement data of a liquid level meter is improved, and the stability of the quality of latex gloves is further ensured.
Drawings
FIG. 1 is a schematic process flow diagram of a process for producing a performance-stabilized nitrile latex glove of the invention
FIG. 2 is a schematic diagram showing the structure of a grinding and dispersing device for the auxiliary agent for the nitrile latex with controllable temperature in the preparation unit of the pre-vulcanized latex.
In fig. 2: 2-1 is a hollow jacket double-layer stirring ball mill shell, 2-2 is a screen, 2-3 is a metal ball, 2-4 is a stirring blade, 2-5 is a reservoir, 2-6 is a motor, 2-7 is a heat sensitive probe, 2-8 is a temperature control switch, 2-9 is a filter, 2-10 is a water pump, 2-11 is the ground, and 2-12 is a concrete layer.
FIG. 3 is a schematic diagram of a glove mold latex dipping unit with a dipping tank configured with an automatic liquid replenishing and level controlling system.
In fig. 3: 3-1 is a hand mold transmission guide rail, 3-2 is a hand mold, 3-3 is a dipping tank, 3-4 is a baffle No. 1, 3-5 is a baffle No. 2, 3-6 is a baffle No. 3, 3-7 is a glue feeding pipeline, 3-8 is latex, 3-9 is a baffle No. 8, 3-10 is a baffle No. 7, 3-11 is a baffle No. 6, 3-12 is a centrifugal pump, 3-13 is a latex storage tank, 3-14 is a filter screen, 3-15 is a liquid level meter, 3-16 is a lower sensor, 3-17 is an upper sensor, 3-18 is a baffle No. 4, and 3-19 is a baffle No. 5.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Example 1
As shown in the figure, the production method of the performance-stable nitrile latex glove comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and a pre-vulcanized latex preparation unit for providing latex for the glove mold latex dipping unit, wherein after glove demolding, the glove mold returns to the ceramic glove mold cleaning unit to enter a production process flow cycle, the glove is inspected and boxed after being treated by the post-treatment unit, and is put in storage, and a latex dipping tank of the glove mold latex dipping unit is provided with an automatic liquid supplementing and liquid level control system, wherein the glove mold latex dipping unit comprises a latex dipping tank, a latex feeding pipeline for conveying latex for the latex dipping tank, a centrifugal pump, a latex storage tank and a filter screen, and two rubber inlets of the latex feeding pipeline for conveying latex for the latex dipping tank are respectively positioned at one sixth of the left edge and the bottom of the latex dipping tank; the upper sensor is fixed at five seventh of the height from the bottom of the dipping tank, and the lower sensor is fixed at four seventh of the height from the bottom of the dipping tank; eight baffles are arranged in the dipping tank, wherein the No. 3 baffle and the No. 8 baffle are respectively positioned above the two glue inlets and are fixed at a seventh height from the left side and the right side of the bottom of the dipping tank, the lengths of the No. 3 baffle and the No. 8 baffle are one fourth of the lengths of the dipping tank, the No. 1 baffle and the No. 2 baffle are respectively fixed at a sixth seventh height and a third seventh height from the left side of the bottom of the dipping tank, the No. 4 baffle and the No. 6 baffle are respectively fixed at a sixth seventh height and a third seventh height from the right side of the bottom of the dipping tank, the lengths of the No. 1 baffle, the No. 2 baffle, the No. 4 baffle and the No. 6 baffle are one seventh of the length of the gum dipping tank, the upper sensor and the lower sensor of the liquid level meter are fixed between the No. 4 baffle and the No. 6 baffle, the No. 5 baffle is fixed on the side surface of the No. 4 baffle and extends downwards to be flush with the upper sensor, the length of the No. 5 baffle is the same as the width of the No. 4 baffle, the No. 7 baffle is fixed on the side surface of the No. 6 baffle and extends upwards to be flush with the lower sensor, the length of the No. 7 baffle is the same as the width of the No. 6 baffle, and the width and the thickness of the eighth baffle are one fifth of the width and one fifteenth of the height of the gum dipping tank respectively; the diameter of the tail end of the rubber inlet pipeline is 150 mm. The pre-vulcanized latex preparation unit is provided with a temperature-controllable auxiliary grinding and dispersing device for the nitrile latex, and comprises a ball mill shell, a screen, metal balls, stirring blades, a motor and a temperature control device, wherein the stirring ball mill shell is of a hollow jacket double-layer structure, and the hollow jacket is connected with a circulating water temperature automatic control system through a pipeline; two groups of blades are respectively added at two ends of the fixed plate of the stirring blade, the added two groups of blades are positioned at the edge of the outermost end of the fixed plate of the stirring blade, and the added two groups of blades are parallel to the stirring shaft of the stirring blade in structural design; the automatic control system for the circulating water temperature consists of a water reservoir, a heat sensitive probe, a temperature control switch, a filter and a water pump, wherein the water pump is connected with the water reservoir through a pipeline, is connected with a water inlet at the lower end of a hollow jacket of the shell of the stirring ball mill through the filter and the pipeline, is provided with a water outlet at the upper end at the other side of the hollow jacket of the shell of the stirring ball mill, and is connected with the water reservoir through the pipeline; the temperature control switch is connected with a heat-sensitive probe for measuring the temperature of the functional auxiliary agent aqueous dispersion liquid in the ball mill and is also connected with a water pump; the temperature of the functional auxiliary agent aqueous dispersion liquid in the ball mill is controlled between 25 ℃ and 30 ℃.
Example 2
As shown in the figure, the production method of the performance-stable nitrile latex glove comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and a pre-vulcanized latex preparation unit for providing latex for the glove mold latex dipping unit, wherein after glove demolding, the glove mold returns to the ceramic glove mold cleaning unit to enter a production process flow cycle, the glove is inspected and boxed after being treated by the post-treatment unit, and is put in storage, and a latex dipping tank of the glove mold latex dipping unit is provided with an automatic liquid supplementing and liquid level control system, wherein the glove mold latex dipping unit comprises a latex dipping tank, a latex feeding pipeline for conveying latex for the latex dipping tank, a centrifugal pump, a latex storage tank and a filter screen, and two rubber inlets of the latex feeding pipeline for conveying latex for the latex dipping tank are respectively positioned at one sixth of the left edge and the bottom of the latex dipping tank; the upper sensor is fixed at five seventh of the height from the bottom of the dipping tank, and the lower sensor is fixed at four seventh of the height from the bottom of the dipping tank; eight baffles are arranged in the dipping tank, wherein the No. 3 baffle and the No. 8 baffle are respectively positioned above the two glue inlets and are fixed at a seventh height from the left side and the right side of the bottom of the dipping tank, the lengths of the No. 3 baffle and the No. 8 baffle are one fourth of the lengths of the dipping tank, the No. 1 baffle and the No. 2 baffle are respectively fixed at a sixth seventh height and a third seventh height from the left side of the bottom of the dipping tank, the No. 4 baffle and the No. 6 baffle are respectively fixed at a sixth seventh height and a third seventh height from the right side of the bottom of the dipping tank, the lengths of the No. 1 baffle, the No. 2 baffle, the No. 4 baffle and the No. 6 baffle are one seventh of the length of the gum dipping tank, the upper sensor and the lower sensor of the liquid level meter are fixed between the No. 4 baffle and the No. 6 baffle, the No. 5 baffle is fixed on the side surface of the No. 4 baffle and extends downwards to be flush with the upper sensor, the length of the No. 5 baffle is the same as the width of the No. 4 baffle, the No. 7 baffle is fixed on the side surface of the No. 6 baffle and extends upwards to be flush with the lower sensor, the length of the No. 7 baffle is the same as the width of the No. 6 baffle, and the width and the thickness of the eighth baffle are one fifth of the width and one fifteenth of the height of the gum dipping tank respectively; the diameter of the tail end of the rubber inlet pipeline is 150 mm. The pre-vulcanized latex preparation unit is provided with a temperature-controllable auxiliary grinding and dispersing device for the nitrile latex, and comprises a ball mill shell, a screen, metal balls, stirring blades, a motor and a temperature control device, wherein the stirring ball mill shell is of a hollow jacket double-layer structure, and the hollow jacket is connected with a circulating water temperature automatic control system through a pipeline; two groups of blades are respectively added at two ends of the fixed plate of the stirring blade, the added two groups of blades are positioned at the edge of the outermost end of the fixed plate of the stirring blade, and the added two groups of blades are parallel to the stirring shaft of the stirring blade in structural design; the automatic control system for the circulating water temperature consists of a water reservoir, a heat sensitive probe, a temperature control switch, a filter and a water pump, wherein the water pump is connected with the water reservoir through a pipeline, is connected with a water inlet at the lower end of a hollow jacket of the shell of the stirring ball mill through the filter and the pipeline, is provided with a water outlet at the upper end at the other side of the hollow jacket of the shell of the stirring ball mill, and is connected with the water reservoir through the pipeline; the temperature control switch is connected with a heat-sensitive probe for measuring the temperature of the functional auxiliary agent aqueous dispersion liquid in the ball mill and is also connected with a water pump; the temperature of the functional auxiliary agent aqueous dispersion liquid in the ball mill is controlled between 25 ℃ and 30 ℃. The ceramic glove mold cleaning unit is sequentially provided with a pickling tank, a first washing tank, an alkaline washing tank, a dish brush cleaning device and a second washing tank, an ultrasonic cleaning tank is arranged between the alkaline washing tank and the dish brush cleaning device, and the cleaning efficiency of the surface of the ceramic glove mold and the finger joints is greatly improved by combining a cleaning agent (anhydrous sodium metaphosphate or anhydrous sodium metasilicate) to further clean the ceramic glove mold; the ultrasonic cleaning tank is added, the use amount of acid and alkali in the early-stage acid washing and alkali washing processes can be reduced, the service cycle of the hand model of the ceramic is prolonged, and the cost of post-stage washing wastewater treatment is reduced.
Claims (3)
1. The production method of the nitrile latex glove with stable performance comprises a ceramic glove mold cleaning unit, a glove mold latex dipping unit, a dry hemming unit, a hot air vulcanizing unit, a glove water cooling and chlorine washing unit, a leaching water washing unit, a glove demolding unit, a glove post-treatment unit and a pre-vulcanized latex preparation unit for providing latex for the glove mold latex dipping unit, wherein the glove mold is returned to the ceramic glove mold cleaning unit to enter a production process flow for circulation after demolding, the glove is inspected and boxed after being treated by the post-treatment unit and put in storage, the production method is characterized in that a latex dipping tank of the glove mold latex dipping unit is provided with an automatic fluid supplementing and liquid level control system, the production device comprises a latex dipping tank, a latex feeding pipeline for conveying latex for the latex dipping tank, a centrifugal pump, a latex tank and a filter screen, the number of the rubber feeding ports of the latex feeding pipeline for conveying latex for the latex dipping tank is two, the upper sensor is fixed at five seventh of the bottom of the dipping tank, the lower sensor is fixed at four seventh of the bottom of the dipping tank, eight baffles are arranged in the dipping tank, wherein the No. 3 baffle and the No. 8 baffle are respectively positioned above two glue inlets and fixed at one seventh of the bottom of the dipping tank, the lengths of the No. 3 baffle and the No. 8 baffle are one fourth of the length of the dipping tank, the No. 1 baffle and the No. 2 baffle are respectively fixed at six seventh and three seventh of the bottom of the dipping tank, the No. 4 baffle and the No. 6 baffle are respectively fixed at one sixth and three seventh of the right side of the dipping tank, 1. the lengths of the No. 2 baffle, the No. 4 baffle and the No. 6 baffle are one seventh of the length of the gum dipping tank, an upper sensor and a lower sensor of the liquid level meter are fixed between the No. 4 baffle and the No. 6 baffle, the No. 5 baffle is fixed on the side surface of the No. 4 baffle and extends downwards to be flush with the upper sensor, the length of the No. 5 baffle is the same as the width of the No. 4 baffle, the No. 7 baffle is fixed on the side surface of the No. 6 baffle and extends upwards to be flush with the lower sensor, the length of the No. 7 baffle is the same as the width of the No. 6 baffle, and the width and the thickness of the eight baffles are respectively one fifth of the width and one fifteenth of the height of the gum dipping tank; the preparation unit of the pre-vulcanized latex is provided with a temperature-controllable auxiliary grinding and dispersing device for the nitrile latex, and comprises a stirring ball mill shell, a screen, metal balls, stirring blades, a motor and a temperature control device, wherein the stirring ball mill shell is of a hollow jacket double-layer structure, the hollow jacket is connected with an automatic circulating water temperature control system through a pipeline, two ends of a fixing plate of the stirring blades are respectively provided with a group of blades, the two groups of blades are positioned at the edge of the outermost end of the fixing plate of the stirring blades, the two groups of blades are structurally designed to be parallel to a stirring shaft of the stirring blades, the automatic circulating water temperature control system consists of a water reservoir, a heat sensitive probe, a temperature control switch, a filter and a water pump, the water pump is connected with the water reservoir through a pipeline, and is connected with a water inlet at the lower end of the hollow jacket of the stirring ball mill shell through the filter and the pipeline, the upper end of the other side of the hollow jacket of the stirring ball mill shell is provided with a water outlet, and is connected with the water reservoir through the pipeline, and the temperature control switch is connected with a heat sensitive probe for measuring the temperature of the functional auxiliary water dispersion in the ball mill.
2. The process for producing a stable performance nitrile latex glove according to claim 1, wherein the aqueous dispersion of functional additives in the ball mill is controlled to a temperature between 25 ℃ and 30 ℃.
3. The method of claim 1, wherein the inlet conduit has a terminal diameter of 150 mm.
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