CN108192238B - Preparation method of thin PVC gloves - Google Patents

Preparation method of thin PVC gloves Download PDF

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Publication number
CN108192238B
CN108192238B CN201711473600.XA CN201711473600A CN108192238B CN 108192238 B CN108192238 B CN 108192238B CN 201711473600 A CN201711473600 A CN 201711473600A CN 108192238 B CN108192238 B CN 108192238B
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pvc
rotation
weight
thin
parts
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CN108192238A (en
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李成文
曹秀丽
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Blue Sail Medical Co ltd
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Blue Sail Medical Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
    • 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
    • B29C41/003—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor characterised by the choice of material
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0091—Complexes with metal-heteroatom-bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
    • C08K5/57—Organo-tin compounds
    • C08K5/58—Organo-tin compounds containing sulfur
    • 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

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Gloves (AREA)

Abstract

The invention adopts specific raw material components, can make the manufactured thin PVC gloves meet the requirements of thin gloves and low gram weight by controlling process parameters under a certain proportion, and simultaneously, VOC discharged in the production process is obviously reduced, thereby effectively solving the problem of large-amount discharge of VOC in the current production of the PVC gloves. Experiments show that the wrist thickness of the thin PVC gloves prepared by the invention is 0.07-0.08 mm, the palm thickness is 0.045-0.06 mm, the finger belly thickness is 0.06-0.085 mm, and the uniformity is 0.11-0.13 mm. The gram weight of the prepared thin PVC gloves is 3.5-4 g. Meanwhile, in the process of producing the thin PVC gloves, 40000m3In the production workshop, the VOC content detected when the baking forming is started is 5-30 mg/m3(ii) a The VOC content after baking for 6min is 20-40 mg/m3。

Description

Preparation method of thin PVC gloves
Technical Field
The invention relates to the technical field of PVC glove production, in particular to a preparation method of a thin PVC glove.
Background
The thin PVC gloves are used as disposable protective gloves, have good protective effect, no allergic source and low cost, and are widely applied to industries such as medical care, food processing, catering, daily cleaning, printing and dyeing, laboratories, electronic product processing and the like in the global range. The thin PVC gloves comprise disposable medical examination PVC gloves, disposable industrial PVC gloves and the like, and the types of the PVC gloves are classified into powder PVC gloves and powder-free PVC gloves. The thin PVC gloves are mainly characterized in that the thickness is 0.03-0.09 mm, and the gram weight of the gloves is 2.0-8.0 g.
Thin PVC gloves originated in the united states, gradually developed in japan and then entered taiwan, and with the increase in manufacturing cost in taiwan, their production gradually shifted to mainland china in the 80-90 s of the 20 th century and rapidly developed, and china is now a production base for thin PVC gloves. More than 90% of thin PVC gloves are produced in China internationally. The production process and formula of the thin PVC gloves are simple, and the raw material cost is low, so that the production equipment and technology updating speed of the thin PVC gloves are very slow. At present, 1500 PVC thin gloves are produced in China probably, the production formula takes PVC paste resin and a plasticizer as main raw materials, takes liquid Ca-Zn stabilizer and other additives as auxiliary materials, and adopts an impregnation process for plasticizing and forming to obtain the thin PVC gloves.
At present, in order to meet the requirements of thin gloves and low gram weight in the production of PVC gloves, the problem of large-amount discharge of VOC (volatile organic compounds) exists in the production process, and the discharge amount of the VOC is usually 200-500 mg/m3And a great deal of air pollution problem is caused. Under the current severe environment-friendly situation, the problem of VOC generated in the production of thin PVC gloves is solved, and the whole PVC glove industry is imperative.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a method for manufacturing a thin PVC glove, which satisfies the requirements of thin glove and low gram weight, and has low VOC emission during the production process.
The invention provides a preparation method of a thin PVC glove, which comprises the following steps:
A) preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain PVC paste;
B) dipping a glove model into the PVC paste, and then rotating the dipped glove model; the rotating speed is 200-800 r/min;
C) and baking and forming the rotated glove model to obtain the thin PVC glove.
Preferably, the plasticizer is selected from one or more of dioctyl phthalate, diisononyl phthalate, dioctyl terephthalate and diisononyl cyclohexane-1, 2-dicarboxylate; the stabilizer is one or more selected from liquid calcium zinc stabilizer, organic tin stabilizer, organic antimony stabilizer and organic rare earth stabilizer.
Preferably, in the step A), the rotation speed of the mixing is 400-600 r/min; the mixing time is 3-5 h.
Preferably, in the step a), still standing and defoaming are further included after the mixing;
and the vacuum degree of the standing defoaming is 0.06-0.8 MPa.
Preferably, in the step A), the viscosity of the PVC paste is 200 to 600 cps.
Preferably, in the step B), the rotation time is 10-360 s.
Preferably, in the step B), the rotation preferably comprises 1-6 sections of accelerated rotation, the rotating speed of each section of accelerated rotation is 300-500 r/min, and the time of each section of accelerated rotation is 10-60 s.
Preferably, in the step C), the temperature for baking and forming is 200-220 ℃; the baking and forming time is 1-10 min.
Preferably, in step C), after the baking and forming, the method further comprises: and (5) curling and demolding.
Preferably, before demolding, the method further comprises: and dipping the baked and molded glove model into a coating agent solution, and then drying the dipped glove model.
The invention provides a preparation method of a thin PVC glove, which comprises the following steps:
A) preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain PVC paste;
B) dipping a glove model into the PVC paste, and then rotating the dipped glove model; the rotating speed is 200-800 r/min;
C) and baking and forming the rotated glove model to obtain the thin PVC glove.
The invention adopts specific raw material components, can make the manufactured thin PVC gloves meet the requirements of thin gloves and low gram weight by controlling process parameters under a certain proportion, and simultaneously, VOC discharged in the production process is obviously reduced, thereby effectively solving the problem of large-amount discharge of VOC in the production of the current PVC gloves. Through further controlling the multi-section high-speed rotation of the dipped glove model, the thin PVC gloves can more easily meet the requirements of thin gloves and low gram weight, and meanwhile, the effect of VOC reduction is better.
Experimental results show that the wrist thickness of the thin PVC gloves prepared by the invention is 0.07-0.08 mm, the palm thickness is 0.045-0.06 mm, the finger belly thickness is 0.06-0.085 mm, the uniformity is 0.11-0.13 mm, and the overall thickness uniformity of the gloves is better. The gram weight of the prepared thin PVC gloves is 3.5-4 g. Meanwhile, in the process of producing the thin PVC gloves, 40000m3In the production workshop, the VOC content detected when the baking forming is started is 5-30 mg/m3(ii) a The VOC content after baking for 6min is 20-40 mg/m3。
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of a thin PVC glove, which comprises the following steps:
A) preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain PVC paste;
B) dipping a glove model into the PVC paste, and then rotating the dipped glove model; the rotating speed is 200-800 r/min;
C) and baking and forming the rotated glove model to obtain the thin PVC glove.
In the preparation method of the thin PVC gloves disclosed by the invention, a PVC paste is prepared firstly: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain the PVC paste.
In the invention, the weight part of the PVC paste resin is 100 parts.
The weight part of the plasticizer is 65-80 parts; preferably 65 to 72 parts. In certain embodiments of the present invention, the weight portion of the plasticizer is 72 parts, 65 parts, or 68 parts. The plasticizer is preferably one or more of dioctyl phthalate, diisononyl phthalate, dioctyl terephthalate and cyclohexane 1, 2-diisononyl phthalate.
The weight part of the stabilizer is 0.5-2 parts; preferably 0.5 to 1.5 parts. In certain embodiments of the present invention, the weight fraction of the stabilizer is 0.8 parts, 1.5 parts, or 0.5 parts. The stabilizer is preferably one or more of liquid calcium zinc stabilizer, organic tin stabilizer, organic antimony stabilizer and organic rare earth stabilizer. The organic tin stabilizer is preferably one or more of isooctyl thioglycolate di-n-octyl tin, dibutyltin dilaurate and octyl tin maleate. The organic antimony stabilizer is preferably antimony tris (isooctyl thioglycolate). The organic rare earth stabilizer is preferably one or more of lanthanum tris (dodecylthioglycolate), cerium tris (dodecylthioglycolate), lanthanum tris (laurylthiol) and lanthanum cyclic thioglycolate.
The weight part of the viscosity reducer is 2-10 parts; preferably 5 to 10 parts. In certain embodiments of the invention, the weight portion of the viscosity reducer is 5 parts, 10 parts, 7 parts, or 0 parts. The viscosity reducer is preferably one or more of D40, D70 and D80.
And (3) mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 0-10 parts by weight of viscosity reducer to obtain the PVC paste. The rotation speed of mixing is preferably 400-600 r/min. In certain embodiments of the present invention, the rotational speed of the mixing is 400 r/min. The mixing time is preferably 3-5 h. In certain embodiments of the invention, the time of mixing is 4 hours.
After the mixing, still standing and defoaming are preferably further included. The vacuum degree of the standing defoaming is preferably 0.06-0.8 MPa. In some embodiments of the invention, the vacuum degree of the standing defoaming is 0.06-0.08 MPa.
After obtaining the PVC paste, the viscosity of the PVC paste at 25 ℃ is preferably 200 to 600 cps. In certain embodiments of the present invention, the PVC paste has a viscosity of 320 cps, 210 cps, 223 cps, 280 cps, or 330 cps at 25 ℃.
A glove former was dipped in the PVC paste, and then the dipped glove former was rotated.
The impregnation is preferably carried out in a PVC trough.
The rotation is preferably performed at the hand die drop section behind the PVC trough. The rotation is preferably autorotation in the horizontal direction. In the invention, the length of the hand mold drop section is preferably 20-50 m.
The rotating speed is 200-800 r/min; preferably 300 to 800 r/min. The rotation time is preferably 10-360 s. In the present invention, the rotation preferably includes 1 to 6 stages of accelerated rotation. Through further controlling the multi-section high-speed rotation of the dipped glove model, the thin PVC gloves can more easily meet the requirements of thin gloves and low gram weight, and meanwhile, the effect of VOC reduction is better. The rotating speed of each section of accelerated rotation is preferably 300-500 r/min, and the time of each section of accelerated rotation is preferably 10-60 s. The distance of each section of accelerated rotation is preferably 2-27 m. In some embodiments of the invention, the rotation comprises 4 stages of accelerated rotation, of the 4 stages of accelerated rotation, the rotation speed of the 1 st stage of accelerated rotation is preferably 300-500 r/min, and the time of the 1 st stage of accelerated rotation is preferably 10-60 s; the rotation speed of the 2 nd section of accelerated rotation is 300-500 r/min, and the time of the 2 nd section of accelerated rotation is 10-60 s; the rotating speed of the 3 rd section of accelerated rotation is 300-500 r/min, and the time of the 3 rd section of accelerated rotation is 10-60 s; the rotating speed of the 4 th section of accelerated rotation is 300-500 r/min, and the time of the 4 th section of accelerated rotation is 10-60 s. The distance of the 1 st section of accelerated rotation is preferably 7 m; the distance of the 2 nd section accelerated rotation is preferably 7 m; the distance of the 3 rd segment accelerated rotation is preferably 7 m; the distance of the 4 th segment accelerated rotation is preferably 7 m. In some embodiments of the invention, the spin comprises only 1 accelerated spin at a speed of 800r/min for 60s and a distance of 27 m. In some embodiments of the invention, the rotation comprises 2 stages of accelerated rotation, and in the 2 stages of accelerated rotation, the rotation speed of the 1 st stage of accelerated rotation is 500r/min, the time is 30s, and the distance is 17 m; the rotation speed of the 2 nd section accelerated rotation is 500r/min, the time is 30s, and the distance is 10 m.
And baking and forming the rotated glove model to obtain the thin PVC glove. In the invention, the temperature of the baking forming is preferably 200-220 ℃. In certain embodiments of the invention, the temperature of the bake form is 200 ℃, 210 ℃, or 220 ℃. The baking and forming time is preferably 1-10 min. In certain embodiments of the present invention, the bake forming time is 6 min. The baking forming equipment is not limited in particular by the present invention, and baking equipment well known to those skilled in the art can be used, and the present invention is preferably an oven.
After the baking and forming, preferably further comprising: and (5) curling and demolding.
Before demolding, the method preferably further comprises the following steps: and dipping the baked and molded glove model into a coating agent solution, and then drying the dipped glove model.
The present invention is not particularly limited to the kind of the coating agent in the coating agent solution, and a coating agent known to those skilled in the art may be used. In the present invention, the coating agent is preferably a polyurethane coating agent (PU coating agent). In certain embodiments of the present invention, the finish is a PU-191 finish. The concentration of the coating solution is not particularly limited in the present invention, and may be those known to those skilled in the art. In certain embodiments of the present invention, the mass concentration of the finish solution is 1%. The method for preparing the coating agent solution is not particularly limited, and a solution preparation method known to those skilled in the art may be used.
The drying apparatus and method of the present invention is not particularly limited, and those known to those skilled in the art can be used. In the invention, the drying temperature is preferably 200-220 ℃, and the drying time is 0.5-10 min.
The source of the raw material components used in the present invention is not particularly limited, and may be generally commercially available.
The invention provides a preparation method of a thin PVC glove, which comprises the following steps:
A) preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain PVC paste;
B) dipping a glove model into the PVC paste, and then rotating the dipped glove model; the rotating speed is 200-800 r/min;
C) and baking and forming the rotated glove model to obtain the thin PVC glove.
The invention adopts specific raw material components, can make the manufactured thin PVC gloves meet the requirements of thin gloves and low gram weight by controlling process parameters under a certain proportion, and simultaneously, VOC discharged in the production process is obviously reduced, thereby effectively solving the problem of large-amount discharge of VOC in the production of the current PVC gloves. Through further controlling the multi-section high-speed rotation of the dipped glove model, the thin PVC gloves can more easily meet the requirements of thin gloves and low gram weight, and meanwhile, the effect of VOC reduction is better.
Experimental results show that the wrist thickness of the thin PVC gloves prepared by the invention is 0.07-0.08 mm, the palm thickness is 0.045-0.06 mm, the finger belly thickness is 0.06-0.085 mm, the uniformity is 0.11-0.13 mm, and the overall thickness uniformity of the gloves is better. The gram weight of the prepared thin PVC gloves is 3.5-4.5 g. Meanwhile, in the process of producing the thin PVC gloves, 40000m3In the production workshop, the VOC content detected when the baking forming is started is 5-30 mg/m3(ii) a The VOC content after baking for 6min is 20-40 mg/m3。
In order to further illustrate the present invention, the following will describe the preparation method of a thin PVC glove provided by the present invention in detail with reference to the examples, but they should not be construed as limiting the scope of the present invention.
The starting materials used in the following examples are all commercially available.
Example 1
Preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 72 parts by weight of dioctyl phthalate, 0.8 part by weight of liquid calcium-zinc stabilizer and 5 parts by weight of viscosity reducer D70, and standing and defoaming under the condition that the vacuum degree is 0.06-0.08 MPa to obtain a PVC paste; the rotating speed of the mixing is 400 r/min, and the mixing time is 4 h. The viscosity of the PVC paste at 25 ℃ is 320 cps.
A glove former was dipped into the PVC paste, the dipping being performed in a PVC trough. And then rotating the dipped glove model, wherein the rotation is carried out at a hand model dropping section behind the PVC trough, and the rotation is autorotation along the horizontal direction. The rotation comprises 4 sections of accelerated rotation, wherein in the 4 sections of accelerated rotation, the rotating speed of the 1 st section of accelerated rotation is 300 r/min, the time is 20s, and the distance is 7 m; the rotation speed of the 2 nd section of accelerated rotation is 300 r/min, the time is 20s, and the distance is 7 m; the rotating speed of the 3 rd section of accelerated rotation is 300 r/min, the time is 10s, and the distance is 7 m; the 4 th section of accelerated rotation has the rotating speed of 300 r/min, the time of 10s and the distance of 7 m.
And (2) baking the rotated glove model in an oven at 210 ℃ for 6min for molding, dipping the baked and molded glove model in a PU-191 coating agent solution with the mass concentration of 1%, drying the dipped glove model at 190 ℃ for 40s, and performing edge curling and demolding to obtain the 4.0g thin PVC glove.
The thickness of the obtained thin PVC gloves is measured, and experimental results show that the wrist thickness of the thin PVC gloves prepared in the embodiment is 0.07mm, the palm center thickness is 0.05mm, the finger belly thickness is 0.07mm, the uniformity is 0.12mm, and the overall thickness uniformity of the gloves is good.
In the process of producing thin PVC gloves, 40000m3In the production workshop, the VOC content when the baking forming is started is detected to be 11mg/m3(ii) a The VOC content after baking for 6min is 36mg/m3。
Example 2
Preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 72 parts by weight of diisononyl phthalate, 0.8 part by weight of isooctyl thioglycolate di-n-octyl tin and 5 parts by weight of viscosity reducer D80, and standing and defoaming under the condition that the vacuum degree is 0.06-0.08 MPa to obtain PVC paste; the rotating speed of the mixing is 400 r/min, and the mixing time is 4 h. The viscosity of the PVC paste at 25 ℃ is 330 cps.
A glove former was dipped into the PVC paste, the dipping being performed in a PVC trough. And then rotating the dipped glove model, wherein the rotation is carried out at a hand model dropping section behind the PVC trough, and the rotation is autorotation along the horizontal direction. The rotation comprises 4 sections of accelerated rotation, wherein in the 4 sections of accelerated rotation, the rotation speed of the 1 st section of accelerated rotation is 500r/min, the time is 20s, and the distance is 7 m; the rotation speed of the 2 nd section of accelerated rotation is 400 r/min, the time is 20s, and the distance is 7 m; the rotation speed of the 3 rd section of accelerated rotation is 500r/min, the time is 10s, and the distance is 7 m; the 4 th section of accelerated rotation has the rotating speed of 400 r/min, the time of 10s and the distance of 7 m.
And (2) baking the rotated glove model in an oven at 210 ℃ for 6min for molding, dipping the baked and molded glove model in a PU-191 coating agent solution with the mass concentration of 1%, drying the dipped glove model at 190 ℃ for 40s, and performing edge rolling and demolding to obtain the 3.5g thin PVC glove.
The measured thickness of the thin PVC gloves prepared in the embodiment shows that the wrist thickness of the thin PVC gloves prepared in the embodiment is 0.075mm, the palm center thickness is 0.045mm, the finger belly thickness is 0.06mm, the uniformity is 0.12mm, and the overall thickness uniformity of the gloves is better.
In the process of producing thin PVC gloves, 40000m3In the production workshop, the VOC content when the baking forming is started is detected to be 11mg/m3(ii) a The VOC content after baking for 6min is 34mg/m3。
Example 3
Preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 72 parts by weight of dioctyl terephthalate, 0.8 part by weight of tri (isooctyl thioglycolate) antimony and 10 parts by weight of viscosity reducer D40, and standing and defoaming under the condition that the vacuum degree is 0.06-0.08 MPa to obtain PVC paste; the rotating speed of the mixing is 400 r/min, and the mixing time is 4 h. The viscosity of the PVC paste at 25 ℃ is 210 cps.
A glove former was dipped into the PVC paste, the dipping being performed in a PVC trough. And then rotating the dipped glove model, wherein the rotation is carried out at a hand model dropping section behind the PVC trough, and the rotation is autorotation along the horizontal direction. The rotation comprises 4 sections of accelerated rotation, wherein in the 4 sections of accelerated rotation, the rotating speed of the 1 st section of accelerated rotation is 400 r/min, the time is 20s, and the distance is 7 m; the rotation speed of the 2 nd section of accelerated rotation is 400 r/min, the time is 20s, and the distance is 7 m; the rotating speed of the 3 rd section of accelerated rotation is 400 r/min, the time is 10s, and the distance is 7 m; the 4 th section of accelerated rotation has the rotating speed of 400 r/min, the time of 10s and the distance of 7 m.
And (2) baking the rotated glove model in an oven at 210 ℃ for 6min for molding, dipping the baked and molded glove model in a PU-191 coating agent solution with the mass concentration of 1%, drying the dipped glove model at 190 ℃ for 40s, and performing edge curling and demolding to obtain the 4.0g thin PVC glove.
The thickness of the obtained thin PVC gloves is measured, and experimental results show that the wrist thickness of the thin PVC gloves prepared in the embodiment is 0.08mm, the palm thickness is 0.05mm, the finger belly thickness is 0.07mm, the uniformity is 0.13mm, and the overall thickness uniformity of the gloves is good.
In the process of producing thin PVC gloves, 40000m3In the production workshop, the VOC content when the baking forming is started is detected to be 11mg/m3(ii) a The VOC content after baking for 6min is 35mg/m3。
Example 4
Preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65 parts by weight of cyclohexane 1, 2-dicarboxylic acid diisononyl, 1.5 parts by weight of lanthanum tris (dodecylthioglycolate) and 10 parts by weight of viscosity reducer D70, and standing and defoaming under the condition that the vacuum degree is 0.06-0.08 MPa to obtain a PVC paste; the rotating speed of the mixing is 400 r/min, and the mixing time is 4 h. The viscosity of the PVC paste at 25 ℃ is 223 cps.
A glove former was dipped into the PVC paste, the dipping being performed in a PVC trough. And then rotating the dipped glove model, wherein the rotation is carried out at a hand model dropping section behind the PVC trough, and the rotation is autorotation along the horizontal direction. The rotation only comprises 1 segment of accelerated rotation, the rotating speed of the accelerated rotation is 800r/min, the time is 60s, and the distance is 27 m.
And (2) baking the rotated glove model in an oven at 210 ℃ for 6min for molding, dipping the baked and molded glove model in a PU-191 coating agent solution with the mass concentration of 1%, drying the dipped glove model at 190 ℃ for 40s, and performing edge rolling and demolding to obtain 4.2g of thin PVC gloves.
The thickness of the obtained thin PVC gloves is measured, and experimental results show that the wrist thickness, the palm center thickness and the finger belly thickness of the thin PVC gloves prepared in the embodiment are 0.076mm, 0.052mm and 0.08mm respectively, the uniformity is 0.11 mm, and the overall thickness uniformity of the gloves is good.
In the process of producing thin PVC gloves, 40000m3In the production workshop, the VOC content detected when the baking forming is started is 12mg/m3(ii) a The VOC content after baking for 6min is 36mg/m3。
Example 5
Preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 68 parts by weight of dioctyl phthalate, 0.5 part by weight of liquid calcium-zinc stabilizer and 7 parts by weight of viscosity reducer D70, and standing and defoaming under the condition that the vacuum degree is 0.06-0.08 MPa to obtain a PVC paste; the rotating speed of the mixing is 400 r/min, and the mixing time is 4 h. The viscosity of the PVC paste at 25 ℃ is 280 cps.
A glove former was dipped into the PVC paste, the dipping being performed in a PVC trough. And then rotating the dipped glove model, wherein the rotation is carried out at a hand model dropping section behind the PVC trough, and the rotation is autorotation along the horizontal direction. The rotation comprises 2 sections of accelerated rotation, wherein in the 2 sections of accelerated rotation, the rotation speed of the 1 st section of accelerated rotation is 500r/min, the time is 30s, and the distance is 17 m; the rotation speed of the 2 nd section accelerated rotation is 500r/min, the time is 30s, and the distance is 10 m.
And (2) baking the rotated glove model in an oven at 210 ℃ for 6min for molding, dipping the baked and molded glove model in a PU-191 coating agent solution with the mass concentration of 1%, drying the dipped glove model at 190 ℃ for 40s, and performing edge rolling and demolding to obtain 4.1 g of thin PVC gloves.
The measured thickness of the obtained thin PVC gloves shows that the wrist thickness of the thin PVC gloves prepared in the embodiment is 0.076mm, the palm thickness is 0.053mm, the finger belly thickness is 0.081mm, the uniformity is 0.12mm, and the overall thickness uniformity of the gloves is good.
In the process of producing thin PVC gloves, 40000m3In the production workshop, the VOC content detected when the baking forming is started is 10mg/m3(ii) a The VOC content after baking for 6min is 35mg/m3。
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A method of making a thin PVC glove, comprising:
A) preparing a PVC paste: mixing 100 parts by weight of PVC paste resin, 65-80 parts by weight of plasticizer, 0.5-2 parts by weight of stabilizer and 2-10 parts by weight of viscosity reducer to obtain PVC paste; the viscosity of the PVC paste at 25 ℃ is 200-600 cps;
B) dipping a glove model into the PVC paste, and then rotating the dipped glove model; the rotation preferably comprises 1-6 sections of accelerated rotation, the rotating speed of each section of accelerated rotation is 300-800 r/min, and the time of each section of accelerated rotation is 10-60 s;
C) baking and molding the rotated glove model to obtain the thin PVC glove; the baking forming temperature is preferably 200-210 ℃.
2. The preparation method according to claim 1, wherein the plasticizer is one or more selected from the group consisting of dioctyl phthalate, diisononyl phthalate, dioctyl terephthalate, and diisononyl cyclohexane-1, 2-dicarboxylate; the stabilizer is one or more selected from liquid calcium zinc stabilizer, organic tin stabilizer, organic antimony stabilizer and organic rare earth stabilizer.
3. The preparation method according to claim 1, wherein in the step A), the rotation speed of the mixing is 400-600 r/min; the mixing time is 3-5 h.
4. The method according to claim 1, wherein the step a) further comprises, after the mixing, still standing for defoaming;
and the vacuum degree of the standing defoaming is 0.06-0.8 MPa.
5. The method according to claim 1, wherein the rotation time in step B) is 10 to 360 seconds.
6. The method according to any one of claims 1 to 5, wherein in step B), the rotation speed of each stage of the accelerated rotation is 300 to 500 r/min.
7. The preparation method according to claim 1, wherein in the step C), the baking time is 1-10 min.
8. The method according to claim 1, wherein the step C) further comprises, after the baking and forming: and (5) curling and demolding.
9. The method of manufacturing according to claim 8, further comprising, prior to demolding the bead: and dipping the baked and molded glove model into a coating agent solution, and then drying the dipped glove model.
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