SU711051A1 - Method of manufacturing rubber-knitted gloves and finger-stalls - Google Patents

Description

(54) METHOD OF MANUFACTURING RUBBER-KNITTING GLOVES AND FOOTWEAR

Knitwear is made of elastic polyamide yarns with a bilastic weave, as a quality agent - a 12% solution of acetic acid in ethyl alcohol, and the production of a latex mixture based on natural latex at 18–22 ° C for 5–7 s .

The technology of the method is as follows.

On the shape of the hands wear knitted gloves basics, which should fit tightly without folds form. Knitted glove basics are made from a specially developed knitted fabric of a particularly thin bifold weave made from polyamide textured yarns (tex 2.2 X 2 or 1.67 X 2) on round interlock class 30 interlocking machines. This canvas has the small thickness (0.62 mm) we need and a large support surface, which contributes to the adhesion of the latex film. The knitted bases, put on the forms, are globally processed with a fixer - 5-12% solution of acetic acid in ethanol. The composition of the fixer and its concentration are selected so as to obtain a layer of latex of the required thickness (0.13 mm) on knitted bases and to exclude the latex through-impregnation of the knitted base After the treatment with knit gloves, the latter are dried. in the next stage of the technological process, an excess of fixate oor can be stimulated by the complete (through) impregnation of the knitted base with latex.

Clamped knit base gloves on the shape of the hand

The main characteristics of rubber gloves

Name

Value indicators

Latex coating thickness, mm

Thickness of the rubberized jersey, mm

Breathability, m / m min

breaking 160

no more than 12

subjected to partial or full rubberizing by dipping the palmar part of the form with a knitted base into a latex mixture prepared on the basis of natural latex, qualitex. The macani process should be carried out smoothly for 5-7 seconds at a latex temperature of 18-22 seconds. As a result, a latex gel is formed on the knitwear.

After the dipping process, the latex gel formed on the knitwear is dried at room temperature and then washed for 10 min.

rubber knitwear in cold running and in hot (40-50s) running water to wash the fixer and syneresis of the gel.

Then, the finished rubber-knit product is dried and vulcanized, which is successively carried out on the shape of a hand in a drying-vulcanization chamber for 2 hours at a temperature of 70 to. After drying and vulcanization, the final stage of the technological process is performed - removal from the forms of finished rubber-knitwear.

Thus, when using a latex blend based on natural latex qualtex, the fixer is a 5-12% aqueous solution of acetic acid in ethyl alcohol and a textile backing made from a knitted fabric of a particularly thin two-fold weave made of elastic polyamide yarns (tex 2.2 x 2 or 1 , 67 x 2) the method provides rubber-knitted gloves with enhanced physical, hygienic and tangible properties.

Methods of determination

GOST 12023-66

GOST 12033-66

According to the air permeability determination method on the Hungarian FF-12 device (ATL-2)

60

GOST 270-64 GOST 270-64

GOST 270-64

Unlike the gloves obtained by this method, the prototype has lower physicomechanical, hygienic and tangible properties (tear resistance, c; 40 kgf / cm, air permeability O, thickness% 2 mm).

The described method also produces a rubber-knitted material and (on a textile basis of another fibrous composition (for example, cotton, a mixture of cotton and elastic).

The use of gloves contributes to the improvement of working conditions, technology, and increases the quality of products. On average, the shelf life of rubber-knitted gloves on various technological operations is up to 40, and some up to 88 hours versus 4-8 hours of operation of currently used gloves on technological operations.

Thus, the proposed method allows to obtain gloves with improved physicomechanical, hygienic and tangible properties.

Claims (3)

1. For France France 2221905, cl. A 41 d 13/10, published. 1974 2. TU 38-106-140-71. 3.R.J.Nobl. Latex in the technique, GHI, L., 1962, p. 507 (proto5 type).