TWM639546U - Non-ionic polyvinyl alcohol gloves - Google Patents

Abstract

A non-ionic polyvinyl alcohol glove comprising a water-based slurry layer and a water-repellent layer coated on the water-based slurry layer, wherein: the water-based slurry layer contains an alkalinity of 85% to 100% and a molecular weight of 30000 to 300,000 polyvinyl alcohol.

Description

Non-ionic polyvinyl alcohol gloves

A glove, particularly a nonionic polyvinyl alcohol glove.

Although the common disposable gloves have good sealing performance, they can prevent substances such as external air or liquid from entering the interior through the gloves, and prevent a wearer from contacting harmful substances or preventing the spread of pathogens such as bacteria and viruses, but these common disposable gloves Most of them have the problem of poor air permeability, which makes the wearer's hand sweat unable to be discharged, which makes the wearer feel sticky and makes the hands uncomfortable, which affects the wearing experience.

In addition, common gloves have many highly polluting and energy-consuming steps in the manufacturing process. The existing process of most disposable latex or nitrile rubber gloves needs to raise the temperature of the boiler to 250°C, which consumes a lot of energy, and produces a lot of mold cleaning and rubber-containing waste water during the manufacturing process, which will also be generated during the deacidification process A large amount of toxic waste water, and toxic waste gas is also produced during the vulcanization and cross-linking reaction molding process, causing great harm to the environment. The material and manufacturing process of PVC gloves will produce toxic waste gas and waste containing chlorine.

In view of this, finding a comfortable disposable glove and a more green and environmentally friendly glove manufacturing process has become an urgent development goal in related fields.

In order to solve the problems of the existing disposable gloves, which are not comfortable to wear and the energy consumption of the manufacturing process is not environmentally friendly, the present invention provides a non-ionic polyvinyl alcohol glove, which includes a body, which is palm-shaped and contains a hollow container cavity, and the body includes: a plurality of finger areas; a palm area, the palm area is integrally connected to the finger area; and a wrist area, the wrist area is integrally connected to the palm area, and the free end of the wrist area Contains an opening connected to the hollow cavity, wherein the hollow cavity extends from the opening to the palm area and the finger area, and there is a bead around the opening in the wrist area; wherein, the body includes A water-based slurry layer close to the hollow cavity and a water-repellent layer coated on the water-based slurry layer, wherein: the water-based slurry layer contains polyethylene with an alkalization degree of 85% to 100% and a molecular weight of 30,000 to 300,000 alcohol.

Wherein, the thickness of the aqueous slurry layer is 300 microns.

Wherein, the water-repellent layer contains a water-repellent wax with a molecular weight of 100 to 5000.

Wherein, the water-repellent wax includes vegetable wax, animal wax, mineral wax, petroleum wax, synthetic wax or a combination of more than one thereof, and the melting point of the water-repellent wax is higher than 80°C.

Wherein, the thickness of the water repellent layer is 0.1 to 50 microns.

As can be seen from the above description, the present invention has the following characteristics:

1. The water-based slurry layer of this model is mainly composed of polyvinyl alcohol with a specific alkalization degree and molecular weight. It is hydrophilic and can absorb hand sweat, keeping the wearer's hands dry and comfortable, and greatly improving the wearing experience.

2. The new non-ionic polyvinyl alcohol gloves have a certain degree of waterproof ability, and can be cleaned directly with alcohol to ensure safe and hygienic use.

3. The materials of the new non-ionic polyvinyl alcohol gloves are all environmentally friendly materials that can be biodegraded, and the manufacturing process of the new non-ionic polyvinyl alcohol gloves does not produce air pollution and water pollution, so This new type is mainly composed of polyvinyl alcohol with a specific alkalization degree and molecular weight. The polyvinyl alcohol is a non-ionic water-based material. It does not need to be formed by chemical reaction through sulfide or chlorine like traditional disposable gloves. Therefore, this new type is non-ionic. Ionic polyvinyl alcohol gloves are non-toxic and environmentally friendly and do not generate hazardous waste.

4. The heating temperature required by this new type of process is low, and the maximum heating and air drying temperature is only 85°C. Compared with the traditional glove process, the energy consumption is greatly reduced, and it is highly energy-saving.

5. The new non-ionic polyvinyl alcohol gloves do not contain chlorine, sulfur, fluorine and other elements, will not cause allergic reactions to the wearer, will not release dust or particles, and can be used in various fields.

10: Ontology

11: Water-based slurry layer

12: Water repellent layer

13: Curling

20: hand model

Fig. 1 is a three-dimensional appearance schematic diagram of an embodiment of the novel nonionic polyvinyl alcohol glove.

Fig. 2 is a three-dimensional layered structure diagram of an embodiment of the novel nonionic polyvinyl alcohol glove.

Fig. 3 is a schematic diagram of the new non-ionic polyvinyl alcohol glove semi-finished product impregnated with polyvinyl alcohol on the hand mold.

Fig. 4 is a schematic diagram of the semi-finished non-ionic polyvinyl alcohol glove of the present invention on the hand mold after crimping.

Fig. 5 is a schematic diagram of the new non-ionic polyvinyl alcohol glove semi-finished product containing water-repellent wax on the hand mold.

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings that need to be used in the description of each embodiment are briefly introduced below. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present invention, and those of ordinary skill in the art will Under the premise of creative labor, the present invention can also be applied to other similar scenarios according to these drawings. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

As indicated in this patent and claims, words such as "a", "an", "an" or "the" are not specific to the singular and may include the plural, unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements.

Except in the examples, or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as modified in all instances by the term "about" or "approximately". Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are to be understood as approximations that can vary depending upon the desired properties obtained in a manner understood by those skilled in the art to which the invention pertains. Typically, this means a variation of at least +/- 20%.

It will be appreciated that "cps" as used herein means centipose, a unit of viscosity, and that the words may be replaced by other expressions if they serve the same purpose.

Please refer to Fig. 1 and Fig. 2, which is a schematic diagram of an embodiment of the new non-ionic polyvinyl alcohol glove. In this embodiment, the non-ionic polyvinyl alcohol glove includes a body 10, the body 10 is in the shape of a palm, and the body 10 includes a plurality of finger areas, which are integrally formed to connect one palm area of the finger areas, and an integral body. A wrist region is shaped to connect the palm region. Wherein, the body 10 includes a hollow cavity, the wrist region includes an opening, the opening is connected to the hollow cavity, and the hollow cavity extends from the opening to the palm area and the finger area, so that the body 10 wearable in a user's hand palm. There is a curling edge 13 on the periphery of the opening, and the curling edge 13 can help the user put on and take off the gloves more conveniently, so as to save time and effort.

Wherein, the body 10 near the hollow cavity is a water-based slurry layer 11, the water-based slurry layer 11 is mainly composed of polyvinyl alcohol (polyvinyl alcohol, abbreviated as PVA) with an alkalization degree of 85% to 100% and a molecular weight of 30,000 to 300,000. constituted. Preferably, its thickness is about 300 microns. The water-based slurry layer 11 is covered with a water-repellent layer 12 . Preferably, the water-repellent layer 12 is made of water-repellent wax with a molecular weight of 100 to 5000, wherein the water-repellent wax includes vegetable wax, animal wax, mineral wax, petroleum wax, synthetic wax or a combination of more than one. Wherein, the thickness of the water-repellent layer 12 is about 0.1 to 50 microns. When wearing the non-ionic polyvinyl alcohol gloves, the water-based slurry layer 11 is in direct contact with the skin of the hands, because the water-based slurry layer 11 is mainly composed of polyvinyl alcohol with a specific alkalization degree and molecular weight, which is hydrophilic and can Absorb hand sweat to keep the wearer's hands dry and comfortable, and the water-repellent layer 12 of the outer layer can make the non-ionic polyvinyl alcohol gloves maintain a certain degree of waterproof function.

In order to better understand the characteristics of the novel nonionic polyvinyl alcohol gloves, the manufacturing method of the novel nonionic polyvinyl alcohol gloves comprises the following steps:

Step S10: preparing a water-based slurry, which is uniformly stirred and mixed by polyvinyl alcohol of 5 to 20 weight percent, pure water of 60 to 80 weight percent and plasticizer of 5 to 20 weight percent, and The viscosity of the aqueous slurry is 1000cps to 8000cps. Wherein, the molecular weight of the polyvinyl alcohol is 30,000 to 300,000, and the alkalization degree is 85% to 100%. Further, the plasticizer is dihydric alcohol, trihydric alcohol or a mixture of dihydric alcohol and trihydric alcohol. Wherein, the dihydric alcohol includes ethylene glycol, and the trihydric alcohol includes glycerol.

Preferably, in step S10 , in order to make the water-based slurry mix more uniformly, the water-based slurry also includes 0.1 to 1 weight percent of a hydrophilic non-ionic surfactant. Preferably, to avoid Microorganisms grow during the process, and 0.1 to 1 weight percent of a bactericidal preservative can be added to the aqueous slurry, and the bactericidal preservative includes OIT (octyl isothiazolinone) fungicide or carbendazim.

Step S20: Dip a hand mold 20 into the aqueous slurry. In this step, a partial area of a hand mold 20 is impregnated with the aqueous slurry prepared in step S10. Wherein, the hand model 20 is a mold imitating a human arm, and the hand model 20 includes a palm and a forearm connected to the palm. Preferably, the material of the hand mold 20 is ceramic material, and the surface of the hand mold 20 is covered with a glaze layer, the glaze layer can make the surface of the hand mold 20 smooth, easy to take out the semi-finished glove, and increase the The durability and corrosion resistance of the hand mold 20. Because of the surface properties of the hand mold 20 and the water-based slurry does not require chemical reactions during the impregnation process, the hand mold 20 can be used repeatedly and does not require solvent cleaning. In step S20, the palm portion and part of the forearm portion of the hand model 20 are completely immersed in the aqueous slurry. Preferably, the temperature of the water-based slurry is controlled between 50° C. and 60° C., and the palm and part of the forearm of the hand model 20 are completely immersed in the water-based slurry for 20 seconds to 50 seconds.

Step S30 : Please refer to FIG. 3 , take out the hand mold 20 from the water-based slurry and heat and air-dry to form a water-based slurry layer 11 . After the hand model 20 is soaked in the water-based slurry, a layer of the water-based slurry is attached to the surface of the palm and part of the forearm of the hand model 20 . The hand mold 20 is heated and air-dried at a temperature of about 80° C. to 85° C. until most of the moisture is removed, and the water-based slurry is formed on the surface of the hand mold 20 to form the water-based slurry layer 11 . Preferably, in order to make the water-based slurry adhere to the hand mold 20 evenly, the hand mold 20 can be rotated during the heating and air-drying process, so that the thickness of the formed water-based slurry layer 11 is more uniform.

Wherein, the step S20 and step 30 can be repeated to increase the average thickness of the water-based slurry layer 11 of the non-ionic polyvinyl alcohol glove. Preferably, repeat the step S20 and step 30 once to make the The water-based slurry layer 11 of the nonionic polyvinyl alcohol glove reaches an optimum thickness. Specifically, after the steps of impregnating and air-drying for the first time are completed, the part of the hand mold 20 covering the water-based slurry layer 11 is impregnated in the water-based slurry again, and the hand mold is removed from the water-based slurry again. After the slurry is taken out and heated and air-dried, the thickness of the aqueous slurry layer 11 increases. The thickness of the water-based slurry layer 11 can be regulated by using multiple impregnation and air-drying processes without changing the material properties of the water-based slurry layer 11 by adjusting the formulation of the water-based slurry.

Step S40: Please refer to FIG. 4 to crimp the water-based slurry layer 11 . In this step S40, the periphery of the water-based slurry layer 11 after heating and air-drying is rolled along the forearm of the hand mold 20 toward the palm with a lip rolling device, and the water-based slurry layer 11 is rolled in the direction of the palm of the hand. A bead 13 is formed on the periphery of the forearm portion of the mold 20 . Preferably, this step S40 is carried out at 60° C. by attaching some pure water to the periphery of the aqueous slurry layer 11 .

Step S50: heating and air-drying the hand mold 20 and the water-based slurry layer 11 . The hand mold 20 and the water-based slurry layer 11 are heated and air-dried at a temperature of about 80°C to 85°C.

Step S60: Please refer to FIG. 5, impregnate the water-based slurry layer 11 in a water-repellent slurry to form a water-repellent layer 12, wherein the water-repellent slurry is a water-repellent wax with a melting point higher than 80°C. Wherein the water repellent wax comprises vegetable wax, animal wax, mineral wax, petroleum wax, synthetic wax or a combination of more than one. Preferably, in the step S60, the aqueous slurry layer 11 attached to the hand mold 20 is immersed in the water-repellent wax heated at 85° C. to 100° C. in a molten state.

Step S70: heat and air-dry the water-repellent layer 12 to form a non-ionic polyvinyl alcohol glove, and separate the non-ionic polyvinyl alcohol glove from the hand mold 20 . In step S60, the water-repellent layer 12 is heated and air-dried at a temperature of about 80° C. to 85° C. to form a nonionic polyvinyl alcohol glove. At this time, the nonionic polyvinyl alcohol glove is still covered on the hand mold 20 , and then the nonionic polyvinyl alcohol glove is separated from the hand mold with a glove stripping machine or manually to complete the production of the nonionic polyvinyl alcohol glove.

As can be seen from the foregoing description, the present invention achieves the following effects:

1. The water-based slurry layer 11 of the present model is mainly composed of polyvinyl alcohol with a specific alkalization degree and molecular weight. It is hydrophilic and can absorb hand sweat, keeping the wearer's hands dry and comfortable, and greatly improving the wearing experience.

2. The new non-ionic polyvinyl alcohol gloves have a certain degree of waterproof ability, and can be cleaned directly with alcohol to ensure safe and hygienic use.

3. The materials of the non-ionic polyvinyl alcohol gloves of this new type are all environmentally friendly materials, which can be biodegradable, and the manufacturing process of this new type of non-ionic polyvinyl alcohol gloves does not produce air pollution and water pollution, because this new type is mainly made of specific alkali It is composed of polyvinyl alcohol with chemical degree and molecular weight. The polyvinyl alcohol is a non-ionic water-based material. It does not need to be formed through chemical reaction of sulfide or chlorine like traditional disposable gloves. Therefore, the new non-ionic polyvinyl alcohol gloves Non-toxic and environmentally friendly and does not generate hazardous waste.

4. The heating temperature required by this new type of process is low, and the maximum heating and air drying temperature is only 85°C. Compared with the traditional glove process, the energy consumption is greatly reduced, and it is highly energy-saving.

5. The new non-ionic polyvinyl alcohol gloves do not contain chlorine, sulfur, fluorine and other elements, will not cause allergic reactions to the wearer, will not release dust or particles, and can be used in various fields.

It should be noted that, according to the explanation and elaboration of the above specification, those skilled in the art to which the present disclosure belongs may also make changes and modifications to the above implementation manners. Therefore, the present disclosure is not limited to the specific implementation manners disclosed and described above, and some equivalent modifications and changes to the present disclosure should also be within the protection scope of the claims of the present disclosure. In addition, although this specification uses a set of specific terms, these terms are only for convenience of description and do not constitute any limitation on the novelty.

10: Ontology

11: Water-based slurry layer

12: Water repellent layer

13: Curling

Claims (5)

A non-ionic polyvinyl alcohol glove comprising a body, the body is palm-shaped and includes a hollow cavity, and the body includes: a plurality of finger areas; a palm region integrally connected to the finger region; and a wrist region, the wrist region integrally connected to the palm region, and the free end of the wrist region includes an opening connected to the hollow cavity, wherein the hollow cavity extends from the opening to the palm region and the finger region, and a bead around the periphery of the opening in the wrist region; Wherein, the body includes a water-based slurry layer close to the hollow cavity and a water-repellent layer coated on the water-based slurry layer, wherein: The aqueous slurry layer contains polyvinyl alcohol with an alkalinity of 85% to 100% and a molecular weight of 30,000 to 300,000. The nonionic polyvinyl alcohol glove as claimed in item 1, wherein the thickness of the aqueous slurry layer is 300 microns. The nonionic polyvinyl alcohol glove as claimed in item 1, wherein the water-repellent layer comprises a water-repellent wax with a molecular weight of 100 to 5000. Non-ionic polyvinyl alcohol gloves as described in claim 3, wherein the water-repellent wax contains vegetable wax, animal wax, mineral wax, petroleum wax, synthetic wax or a combination of more than one, and the water-repellent wax has a high melting point at 80°C. The non-ionic polyvinyl alcohol glove as described in Claim 1, 3 or 4, wherein the thickness of the water-repellent layer is 0.1 to 50 microns.

Images