WO2019192276A1

WO2019192276A1 - Ultra thin glove and preparation method therefor

Info

Publication number: WO2019192276A1
Application number: PCT/CN2019/076838
Authority: WO
Inventors: 林鑫
Original assignee: 汇鸿（南通）安全用品有限公司
Priority date: 2018-04-04
Filing date: 2019-03-04
Publication date: 2019-10-10
Also published as: CN108308762A; CN108308762B

Abstract

Disclosed is an ultra thin glove comprising a glove core, characterized in that at least one layer of a polyurea coating is fixed onto the outer surface of the glove core or onto the outer surface of a specific portion by means of rubber dipping or spraying. At least one very thin layer of the polyurea coating is formed on the palm and finger portions of the glove by means of rubber dipping or spraying using a home-made polyurea coating rubber material, thereby producing an ultra thin glove that reduces the hand fatigue of a wearer and is more comfortable. In addition, the home-made polyurea coating rubber material is rationally formulated to prevent the rubber material from penetrating into the interior of the glove and to avoid direct contact between the skin of the wearer and the rubber material, and there are no harmful substances added to the rubber material, so that same not only makes the glove soft but also causes no harm to the wearer.

Description

Ultrathin glove and preparation method thereof

Technical field

The invention relates to an ultra-thin glove, in particular to an ultra-thin glove prepared by dipping or spraying with polyurea as a main compound.

Background technique

Dipped gloves have been widely used in the field of labor protection products, but the thickness of the dipped gloves is thick, the wearing comfort is poor, and the gloves are easy to penetrate after dipping, which will directly contact the user's skin and cause certain defects to the user. stimulate. To this end, a new technical solution is needed to solve the above problems.

Summary of the invention

The invention provides an ultra-thin glove prepared by dipping or spraying with polyurea as a main rubber, which has the characteristics of ultra-thin, high tensile strength and high elongation, and the user Excellent comfort and flexibility, grip, and seamless dipping for maximum palm protection.

The technical solution adopted by the invention is:

An ultra-thin glove comprising a glove core, the outer surface of the glove core or the outer surface of the specific part is fixed with at least one layer of polyurea coating by dipping or spraying.

The polyurea coating comprises, by weight percent, the following components: polyurea 90-100%, epoxy resin adhesive 0-10%, dye 0-10%.

The steps of dipping the polyurea coating on the outer surface of the glove core or on the outer surface of a specific part are as follows:

a heating compound: heating the polyurea coating compound and maintaining the temperature of 60-80 ° C;

b. Molding: put a glove core on the hand mold;

c. Temperature control: heating or cooling by the opponent mold, so that the temperature of the glove core before dipping is controlled by -5-70 ° C;

d. Dipping: the glove core maintains the above temperature, and the glove core is immersed in the polyurea coating rubber at a certain angle for dipping 1-10s;

e. Epoxy: Epoxy on the dipping tank for 1-2 min;

f. Surface treatment: immersing the dipped glove core in a 5-10% aqueous solution of ethanol for 1-2 minutes;

g. Resting: After standing at room temperature for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.

Further, after the f step, the glove core can be subjected to secondary dipping: that is, after the f step, the dipped glove core is again dipped in the polyurea coating rubber for 1-10s; then the glue is dispensed and Surface treatment, after the surface treatment, the secondary dipping process can be repeated for three times of dipping, and multiple dipping is performed accordingly.

Further, the color of the polyurea coating compound dipped each time in the multiple dipping process is the same or different.

The steps of spraying the polyurea coating on the outer surface of the glove core or on the outer surface of a specific part are as follows:

a heating compound: heating the polyurea coating compound and maintaining the temperature of 80-100 ° C;

b. Molding: put a glove core on the hand mold;

d. Cover mold: use the spray mold to block the part of the glove core that does not need to be sprayed;

e. Spraying: uniformly spraying the polyurea coating on the glove core by using a glue sprayer;

f. Surface treatment: immersing the glued glove core in an aqueous solution of 5-10% ethanol for 1-2 minutes;

Further, the thickness of the polyurea coating can be controlled by adjusting the dispensing speed of the glue dispenser.

After the f step, the glove core can be sprayed twice: that is, the glove core that has been sprayed once in the f step is sprayed again by the glue sprayer; then the surface treatment, the surface treatment can repeat the secondary spray process The glue is sprayed three times, and the glue is sprayed several times.

The color of the polyurea coating compound that is sprayed each time during the multiple dispensing process is the same or different.

The polyurea may also be a modified polyurea.

The invention adopts a self-made polyurea coating compound to form at least one thin layer of polyurea coating on the palm and finger parts of the glove by dipping or spraying, thereby obtaining ultra-thin gloves and reducing wearing. The hands are tired, bringing more comfort. At the same time, the self-made polyurea coating rubber compound is properly formulated to prevent the rubber material from penetrating into the glove interior, and the wearer's skin is not directly contacted with the rubber material, and the rubber material is not added with any harmful substances, which not only makes the glove soft, And there is no harm to wear.

The surface of the glove is treated after each dipping or spraying, so that the rubber can be quickly formed into a film, and a smooth and transparent translucent adhesive layer is formed on the surface of the glove, no matter how thin the glue layer can be completed. Film formation for ultra-thin purposes.

detailed description

Example 1

The polyurea coating composition was selected, and the polyurea was 90% and the dye was 10% by weight.

In the form of dipping.

First, the polyurea coating rubber is heated and maintained at a temperature of 80 ° C, the glove core is placed on the hand mold, and heated by the opponent mold, so that the temperature of the glove core before the dipping is controlled by 50 ° C; the glove core maintains the above temperature, The glove core is dipped in the polyurea coating rubber at a certain angle for 3 s; the glue is dipped on the dipping tank for 1 min; the dipped glove core is immersed in an aqueous solution of 5-10% ethanol for 2 min; at room temperature After standing for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.

Example 2

The polyurea coating composition was selected and the polyurea was 100% by weight.

In the form of dipping.

First, the polyurea coating rubber is heated and maintained at a temperature of 70 ° C, the glove core is placed on the hand mold, and heated by the opponent mold, so that the temperature of the glove core before the dipping is controlled to 60 ° C; the glove core maintains the above temperature, The glove core is dipped in the polyurea coating rubber at a certain angle for 5 s; the glue is dipped on the dipping tank for 2 min; the dipped glove core is immersed in an aqueous solution of 5-10% ethanol for 2 min; at room temperature After standing for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.

Example 3

The polyurea coating composition was selected and calculated by weight percentage, polyurea 90%, epoxy resin adhesive 10%.

In the form of dipping.

First, the polyurea coating rubber is heated and maintained at a temperature of 60 ° C, the glove core is placed on the hand mold, and heated by the opponent mold, so that the temperature of the glove core before the dipping is controlled to 60 ° C; the glove core maintains the above temperature, The glove core is dipped in the polyurea coating rubber at a certain angle for 5 s; the glue is dipped on the dipping tank for 2 min; the dipped glove core is immersed in an aqueous solution of 5-10% ethanol for 2 min; at room temperature After standing for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.

Example 4

After the dipped glove core is soaked in ethanol water, the glove core is subjected to secondary dipping: the dipped rubber core is dipped again in the polyurea coating rubber for 3 s; then the glue and surface treatment are performed. After the surface treatment, the secondary dipping process can be repeated for three times of dipping. The other processing is the same as in the first embodiment. The color of the dipped polyurea coating compound is the same or different.

Example 5

After the dipped glove core is soaked in ethanol water, the glove core is subjected to secondary dipping: the dipped rubber core is dipped again in the polyurea coating rubber for 3 s; then the glue and surface treatment are performed. After the surface treatment, the secondary dipping process can be repeated for three times of dipping. The other processing is the same as in the second embodiment.

Example 6

After the dipped glove core is soaked in ethanol water, the glove core is subjected to secondary dipping: the dipped rubber core is dipped again in the polyurea coating rubber for 3 s; then the glue and surface treatment are performed. After the surface treatment, the secondary dipping process can be repeated for three times of dipping. The other processing is the same as in the third embodiment.

Example 7

After the dipped glove core is soaked in ethanol water, the glove core is subjected to secondary dipping: the dipped rubber core is dipped again in the polyurea coating rubber for 3 s; then the glue and surface treatment are performed. After the surface treatment, the secondary dipping process can be repeated for three times of dipping. The other processing is the same as in the fourth embodiment.

Example 8

The polyurea coating composition was selected, and the polyurea was 90%, the dye was 5%, and the epoxy resin adhesive was 5% by weight.

In the way of spraying glue.

Firstly, the polyurea coating rubber is heated and maintained at a temperature of 80 ° C; the glove core is placed on the hand mold; the heating is performed by the hand mold, so that the temperature of the glove core is 40 ° C before the dipping; the glove core is used by the spray mold The part that does not need to be sprayed is shielded; the polyurea coating is evenly sprayed on the glove core by the glue sprayer; the glove core after the glue is immersed in an aqueous solution of 5-10% ethanol for 2 minutes; and allowed to stand at normal temperature. 20-60min, after the polyurea coating is completely solidified, an ultra-thin glove product is obtained.

Example 9

The polyurea coating composition was selected, and the polyurea was 95% and the epoxy resin was 5% by weight.

In the way of spraying glue.

First, the polyurea coating rubber is heated and maintained at a temperature of 100 ° C; the glove core is placed on the hand mold; the heating is performed by the hand mold, so that the temperature of the glove core is 50 ° C before the dipping; the glove core is used by the spray mold The part that does not need to be sprayed is shielded; the polyurea coating is evenly sprayed on the glove core by the glue sprayer; the glove core after the glue is immersed in an aqueous solution of 5-10% ethanol for 1.5 minutes; After 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.

Example 10

The polyurea coating composition was selected and found to be 95% by weight of polyurea and 5% by weight of dye.

In the way of spraying glue.

Firstly, the polyurea coating rubber is heated and maintained at a temperature of 90 ° C; the glove core is placed on the hand mold; the heating is performed by the hand mold, so that the temperature of the glove core is controlled at 70 ° C before dipping; the glove core is used by the spray mold The part that does not need to be sprayed is shielded; the polyurea coating is evenly sprayed on the glove core by the glue sprayer; the glove core after the glue is immersed in an aqueous solution of 5-10% ethanol for 2 minutes; and allowed to stand at normal temperature. 20-60min, after the polyurea coating is completely solidified, an ultra-thin glove product is obtained.

Example 11

The polyurea coating composition was selected and the modified polyurea was 100% by weight.

In the way of spraying glue.

Example 12

In the glove core of one spray, the glue is sprayed again by the spray machine; then the surface treatment, after the surface treatment, the double spray process can be repeated for three times. The secondary and tertiary spray requirements and the polyurea coating compound were the same as in Example 8. The color of the polyurea coating compound that is sprayed each time is the same or different.

Example 13

In the glove core of one spray, the glue is sprayed again by the spray machine; then the surface treatment, after the surface treatment, the double spray process can be repeated for three times. The secondary and tertiary spray requirements and the polyurea coating compound were the same as in Example 9.

Example 14

In the glove core of one spray, the glue is sprayed again by the spray machine; then the surface treatment, after the surface treatment, the double spray process can be repeated for three times. The secondary and tertiary spray requirements and the polyurea coating compound were the same as in Example 10. The color of the polyurea coating compound that is sprayed each time is the same or different.

Example 15

In the glove core of one spray, the glue is sprayed again by the spray machine; then the surface treatment, after the surface treatment, the double spray process can be repeated for three times. The secondary and tertiary spray requirements and the polyurea coating compound were the same as in Example 11.

The products obtained in the above examples were tested:

Claims

An ultra-thin glove comprising a glove core, characterized in that: the outer surface of the glove core or the outer surface of the specific part is fixed with at least one layer of polyurea coating by dipping or spraying.
An ultrathin glove according to claim 1, wherein the polyurea coating comprises the following components in percentage by weight:

Polyurea 90-100%

Epoxy resin adhesive 0-10%

Dye 0-10%.
An ultrathin glove according to claim 1 or 2, wherein the step of dipping the polyurea coating on the outer surface of the glove core or the outer surface of the specific portion is as follows:

a heating compound: heating the polyurea coating compound and maintaining the temperature of 60-80 ° C;

b. Molding: put a glove core on the hand mold;

c. Temperature control: heating or cooling by the opponent mold, so that the temperature of the glove core before dipping is controlled by -5-70 ° C;

d. Dipping: the glove core maintains the above temperature, and the glove core is immersed in the polyurea coating rubber at a certain angle for dipping 1-10s;

e. Epoxy: Epoxy on the dipping tank for 1-2 min;

f. Surface treatment: immersing the dipped glove core in a 5-10% aqueous solution of ethanol for 1-2 minutes;

g. Resting: After standing at room temperature for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.
The ultra-thin glove according to claim 3, characterized in that: after the step f, the glove core can be subjected to secondary dipping: that is, after the f step, the dipped glove core is in the polyurea coating rubber compound. The immersion liquid is immersed again for 1-10s; then the glue is immersed and surface treated. After the surface treatment, the second dipping process can be repeated for three times, and the dipping is performed multiple times.
An ultrathin glove according to claim 4, wherein the color of the polyurea coating compound dipped each time is the same or different during the multiple dipping process.
An ultrathin glove according to claim 1 or 2, wherein the step of spraying the polyurea coating on the outer surface of the glove core or the outer surface of the specific portion is as follows:

a heating compound: heating the polyurea coating compound and maintaining the temperature of 80-100 ° C;

b. Molding: put a glove core on the hand mold;

c. Temperature control: heating or cooling by the opponent mold, so that the temperature of the glove core before dipping is controlled by -5-70 ° C;

d. Cover mold: use the spray mold to block the part of the glove core that does not need to be sprayed;

e. Spraying: uniformly spraying the polyurea coating on the glove core by using a glue sprayer;

f. Surface treatment: immersing the glued glove core in an aqueous solution of 5-10% ethanol for 1-2 minutes;

g. Resting: After standing at room temperature for 20-60 minutes, the ultra-thin glove product is obtained after the polyurea coating is completely solidified.
An ultrathin glove according to claim 6, wherein the thickness of the polyurea coating is controlled by adjusting the dispensing speed of the glue dispenser.
The ultra-thin glove according to claim 6, characterized in that: after the step f, the glove core can be double-sprayed: that is, the glove core that has been sprayed once in the f step is sprayed again by the glue sprayer. Glue; then surface treatment, after the surface treatment, the secondary spray process can be repeated for three times, and the glue is sprayed several times.
The ultra-thin glove according to claim 6, wherein the color of the polyurea coating compound sprayed each time is the same or different during the multiple spraying process.
An ultrathin glove according to claim 1, wherein the polyurea is further a modified polyurea.