CN105054415A - Making method for food contact butyronitrile gloves - Google Patents

Abstract

The invention discloses a making method for food contact butyronitrile gloves. The method includes the following steps that A, butyronitrile latex for dipping is prepared; B, coagulating agent dipping is performed; C, mould drying is performed; D, butyronitrile latex dipping is performed; E, high temperature sulfidation is performed; F, cooling is performed to obtain the finished products. In the step A, raw materials are mixed and fully stirred clockwise to be even, and the solid content is adjusted to 21-25%, wherein the stirring speed is 25-40 r/min, and the raw materials comprise 100 parts of butyronitrile latex, 1-2.5 parts of stabilizing agent, 1-3 parts of water-base cross-linking agent, 1.5-3 parts of titanium dioxide, 0.3-0.8 part of anti-aging agent, 0.2 part of conditioning agent and 0.115 part of pigment; then, the mixture stands for at least 48 h, wherein the stirring speed is 12-20 r/min in standing. Compared with the prior art, the method has the advantages that the gloves made through the method do not contain zinc oxide, nitrosamine, nitrosamine substances, aromatic amine and formaldehyde, and the zinc migration quantity and other indexes in food contact are effectively lowered.

Description

A kind of preparation method of Food Contact butyronitrile gloves

Technical field

The present invention relates to gloving method, particularly relate to a kind of preparation method of Food Contact butyronitrile gloves.

Background technology

Gloves, owing to having barrier protection effect, can be good at the safety protecting user, have been widely used in the productive life of people.According to the difference of its purposes, can be divided into medical gloves, industrial gloves contacts gloves with domestic purpose gloves with food-grade, along with the development of science and technology, the formula of gloving material is constantly updated, and enables the Food Contact test request meeting each side.But existing gloving material is still not enough meets the multinational multinomial Food Contact test request day by day improved, as the indexs such as zinc migration amount in Food Contact still do not meet relevant environmental protection standard.

Summary of the invention

The present invention is to solve above-mentioned deficiency, provides a kind of preparation method of Food Contact butyronitrile gloves.

Above-mentioned purpose of the present invention is realized by following technical scheme: a kind of preparation method of Food Contact butyronitrile gloves, is characterized in that: comprise the following steps:

The NBR latex of A, preparation dipping: mixed by following raw material, and stir clockwise, stir speed (S.S.) is 25-40r/min, regulates solid content 21-25%; Then quietly at least 48 hours are put, quiet mixing speed 12-20r/min when putting;

NBR latex 100 parts;

Stabilizing agent 1-2.5 part;

Water base bridging agent 1-3 part;

Titanium dioxide 1.5-3 part;

Age resistor 0.3-0.8 part;

Conditioning agent 0.2 part;

0.115 part, colorant;

B, dipping coagulating agent: mould first floods coagulating agent before drying, and coagulating agent is calcium nitrate or the calcium chloride solution of 8-12%;

C, oven dry mould: mould is dried;

D, dipping NBR latex: at the above-mentioned NBR latex prepared of mould dipping;

E, high temperature vulcanized: by the mould after dipping NBR latex through 120-135 degree Celsius, 20-40 minute high temperature vulcanized;

F, cool to obtain finished product: after high temperature vulcanized, cool, taken off from mould by gloves, obtain finished product.

The present invention's advantage is compared with prior art: the gloves oxygen-freeization zinc that method of the present invention is obtained, nitrosamine and nitroso-amines material, not containing aromatic amine and formaldehyde; Effectively reduce the index such as zinc migration amount in Food Contact.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is described in further detail.

As shown in Figure 1, a kind of preparation method of Food Contact butyronitrile gloves, is characterized in that: comprise the following steps:

The NBR latex of A, preparation dipping: mixed by following raw material, and stir clockwise, stir speed (S.S.) is 25-40r/min, regulates solid content 21-25%; Then quietly at least 48 hours are put, quiet mixing speed 12-20r/min when putting;

NBR latex 100 parts;

Stabilizing agent 1-2.5 part;

Water base bridging agent 1-3 part;

Titanium dioxide 1.5-3 part;

Age resistor 0.3-0.8 part;

Conditioning agent 0.2 part;

0.115 part, colorant;

B, dipping coagulating agent: mould first floods coagulating agent before drying, and coagulating agent is calcium nitrate or the calcium chloride solution of 8-12%;

C, oven dry mould: mould is dried;

D, dipping NBR latex: at the above-mentioned NBR latex prepared of mould dipping;

E, high temperature vulcanized: by the mould after dipping NBR latex through 120-135 degree Celsius, 20-40 minute high temperature vulcanized;

F, cool to obtain finished product: after high temperature vulcanized, cool, taken off from mould by gloves, obtain finished product.

The gloves oxygen-freeization zinc that method of the present invention is obtained, nitrosamine and nitroso-amines material, not containing aromatic amine and formaldehyde; Effectively reduce the index such as zinc migration amount in Food Contact.The product that this formula is produced, meets following national standard.

A. U.S. FDA contact food rubber standard FDAReg.21CFR177.2600;

B. French decree, 09/11/1994, D class;

C. German DFR, the of short duration contact goods of III class;

D. japanese food engaged test;

E. Italian 21/03/1973 minister's instruction;

F. China Health standard GB4806.1-1989.

The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (1)

1. a preparation method for Food Contact butyronitrile gloves, is characterized in that: comprise the following steps:

The NBR latex of A, preparation dipping: mixed by following raw material, and stir clockwise, stir speed (S.S.) is 25-40r/min, regulates solid content 21-25%; Then quietly at least 48 hours are put, quiet mixing speed 12-20r/min when putting;

NBR latex 100 parts;

Stabilizing agent 1-2.5 part;

Water base bridging agent 1-3 part;

Titanium dioxide 1.5-3 part;

Age resistor 0.3-0.8 part;

Conditioning agent 0.2 part;

0.115 part, colorant;

B, dipping coagulating agent: mould first floods coagulating agent before drying, and coagulating agent is calcium nitrate or the calcium chloride solution of 8-12%;

C, oven dry mould: mould is dried;

D, dipping NBR latex: at the above-mentioned NBR latex prepared of mould dipping;

E, high temperature vulcanized: by the mould after dipping NBR latex through 120-135 degree Celsius, 20-40 minute high temperature vulcanized;

F, cool to obtain finished product: after high temperature vulcanized, cool, taken off from mould by gloves, obtain finished product.