SU1149928A1 - Method of manufacturing protective gloves - Google Patents

Abstract

A METHOD FOR MAKING PROTECTIVE GLOVES by obtaining a knitted billet from a cotton yarn with a two-fold weave followed by treatment with an alcoholic solution of acetic acid Tbi and impregnation with a latex mixture. characterized in that, in order to save raw materials and quality of the gloves, when preparing the preform, the loop length of the knitted fabric is chosen in the range from 3.47 to 3.6 mm, and before being treated with an alcoholic solution of acetic acid, impregnated with a thermodynamic substance to form a protective film followed by drying, moreover, a solution containing a polyvinyl acetate emulsion, acetic acid / ammonium and water is used as a thermosetting substance at § the following ratio of components, g / l: (L Polyvinyl acetate emulsion 5-8 ksusnokisly ammonium VodaOstalnoe 2-3 to 1 liter.

Description

I

The invention relates to the knitwear industry and can be used in the manufacture of rubber gloves, intended to protect the hands of fishing workers in order to avoid industrial injuries.

Known rubber gloves to protect the hands of workers in the fishing industry with a rough surface KA Naira Z fl

The disadvantages of the known gloves are their low strength and low hygienic properties.

- A known method of making protective gloves by obtaining a knitted billet from a cotton yarn with a two-fold weave followed by treatment with an alcoholic solution of acetic acid, impregnation with a latex mixture G2

The disadvantage of this method is a significant consumption of natural raw materials required in the light industry, as well as the insufficiently good quality of the gloves being produced, as lateral saturation of the knitted fabric with latex is observed.

The purpose of the invention is to save raw materials and improve the quality of gloves.

This goal is achieved by the fact that according to the method of manufacturing protective gloves, including the production of a knitted billet. 47 to 3.6 mm, and before treatment with an alcoholic solution of acetic acid, they are impregnated with a thermosetting substance to form a protective film, followed by drying, moreover a thermosetting substance A solution containing watering inyl acetate emulsion, ammonium acetic acid and water in the following ratio of components, g / l is used:

Polyvinyl acetate

emulsion 5-8

Acetic acid

ammonium 2.0-2.5

WaterEverything

up to 1 l.

99282

It is known that the shorter the loop length, the more material-intensive the knitted fabric. In order to save raw materials, the material consumption of a knitted fabric is usually reduced, increasing the length of the loop. However, when applying a latex coating on a knitted base with an increased loop length

10 nab), it is applied through latex soaking of the knitted base over a considerable area.

Pre-impregnation (before opening) tricotal base

15 with a solution containing a polyvinyl acetate emulsion, in the presence of ammonium acetate, makes it possible to exclude the latex penetration of the knitted base with an increased loop length.

The method is carried out as follows.

Knitted fabric for the basics of gloves produced by machine

5 Interlok 20 class two-elastic weave of cotton yarn with a linear density of 18.5 Tex (54/1) with a loop length from 3.47 to 3.6 mm. Wet bleached

3Q or boiled cloth is impregnated with a thermosetting substance to form a protective film, containing a polyvinyl acetate emulsion, ammonium acetate and water, in the following ratio of components,

g / l:

Polyvinyl acetate

5-8 emulsion

Ammonium acetate

2.0-2.5 Water The rest is up to 1 l.

The impregnation is carried out on a padding with the temperature of the sizing j composition equal to 25 ° C, then dried at 120 ° C. The knitted fabric of gloves is cut out of the fabric thus treated, which is then sewn on sewing machines, “Exact.

Knitted gloves, put on the forms of hands, are treated with 5% solution of acetic acid in ethyl alcohol, after which they are dried 55 in air for 5 minutes. After this, partial or full rubberizing is carried out by means of a successive impregnation of a part of the mold with a knitted one. the basis in the latex mixture based on natural latex revultex, thickened with 4% methylcellulose solution, and in the thickened neoprene-750 latex. The impregnation process is carried out smoothly, without loosening.

After that, knitted basics of gloves are treated with coagulum (8% solution of calcium chloride or nitrate), then with Neoprene-750, held for 1-2 minutes, treated with coagulum, then with neoprene 750 with crumb rubber, dried in a thermostat for 5 minutes and washed for 30 minutes, dried for 5 hours and cured at 90 ° C for 40 minutes. In terms of its physico-mechanical parameters, a glove made meets the requirements of normative-technical documentation and has rather high strength characteristics: 38.8 kgf in length and 19.4 kgf in width.

Example 1. The manufacture of a glove is carried out in the manner indicated above, with the impregnation of the knitted backing being carried out by staging / l:

containing

Polivin Shatsetna emulsion 5

Ammonium acetic acid 2 Water The rest is up to 1 l Example 2. Impregnation of a knitted base is carried out with a composition containing, g / l: Polyvinyl acetate emulsion 6 Ammonium acetate 2.3 Water Else

up to 1 l.

Example 3. Impregnation of a knitted base is carried out with a composition containing, g / l: Polyvinyl acetate emulsion 8

Ammonium acetate 3 Water Else

up to 1 l.

Example 4. Impregnation of knitted base is carried out with a composition containing, g / l:

Polyvinyl acetate

4.0 emulsion

Ammonium acetate 5,5

Else Water up to 1 l.

Example 5. The impregnation is carried out with a solution containing, g / l:

Polyvinyl acetate emulsion 9

Ammonium acetate 4 Water Else

up to 1 l.

Samples of rubber-knitted gloves were tested for resistance to delamination (characterizing adhesion properties) and tested for lateral impregnation of the knitted base with latex.

The dependence of the quality of gloves on the concentration of components of a thermosetting solution (according to examples 1-5) is given in. tab. one .

Table 1

From tab. 1 it follows that samples treated with a thermosetting solution (examples 1-3) containing components within the proposed

concentrations, have an increased resistance to delamination, and do not have a latex soaking through the knitted fabric.

S

if the concentration of the components of the thermosetting solution is outside the range proposed (examples 4 and 5), the quality of the treated samples deteriorates, the resistance to delamination decreases, and the latex penetration of the knitted fabric appears.

In addition, tests were carried out on the quality of impregnation of knitted fabrics having different loop lengths, i.e. having different materials consumption, in order to form a protective film as a thermosetting solution in one case

tea was used composition containing kremneorganichesky compound GKZH-10, and in the other - the proposed composition according to example 2. Dependence 5 quality gloves on the length of the knitted fabric loop and the type of treatments are given in Table. 2, from which it follows that sample 1, having a loop length of a knitted fabric, treated with a thermosetting solution and made according to the proposed method, has the highest resistance to delamination (1.64 kg / cm) and does not have a latex impregnation of the knitted base.

Table 2

Offered (interlacing of two elastic smooth from cotton yarn 18,5 Tex, with a loop length of 3.47 mm)

Famous

(two-elastic smooth interlacing of cotton yarn 18.5 tex, with a loop length of 3.0 mm)

Resistance to delamination of the sample having the proposed length of the knitted fabric loop, but en- teply- Dot- Lack of a new design

square

Dot-From-QTn sucks

botanical silica resins that can also form a film is reduced to 1.3 kg / cm

711D99288

and end-to-end soaking appears. So the glove samples,

Latex knitted base. Made by the proposed method Sample 2, have a length of the looper, have a higher adhesiveness of the knitting fabric less offer properties (resistance,

mine and processed by any thermoreaction-: j)) and do not have a through

solution also has a latex knit impregnation

unsatisfactory quality. Basics.

Claims (1)

METHOD FOR MANUFACTURING PROTECTIVE GLOVES by obtaining a knitted blank from cotton yarn of a two-layer weave followed by treatment with an alcoholic solution of acetic acid and impregnated with a latex mixture, characterized in that, in order to save raw materials and improve the quality of gloves, when choosing a blank, the loop length of the knitted fabric is chosen from 3.47 to 3.6 mm, and before treatment with an alcoholic solution of acetic acid, they are impregnated with a thermosetting substance to form a protective film with subsequent drying which, moreover, as a thermosetting substance, a solution containing a polyvinyl acetate emulsion, acetic acid / ammonium and water is used in the following ratio of components, g / l: Polyvinyl acetate emulsion 5-8 Ammonium Acetate 2-3 Water The rest is up to 1 liter. ί