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Rubber Production Process

(1) rubber ingredients


According to the formula, the rubber and various rubber mixtures were prepared for the use of rubber plasticizing and mixing processes. The main harmful factors are carbon black dust, organic dust, Zinc Oxide and high temperature.


(two) rubber mixing


After plasticizing, accelerator, antioxidant, oxidant and vulcanizing agent were added into the rubber mixture, and then the rubber mixture was prepared on the open mixer or mixer. The main harmful factors are carbon black dust, organic dust, Zinc Oxide and high temperature.


(three) rubber pulping

A small piece of plastic rubber or rubber compound should be mixed into the mixer with proportionant and solvent to make the glue. The main harmful factors are ammonia, benzene, toluene, xylene, gasoline and formaldehyde.


(four) dipping and scraping

Impregnating or scraping a very thin layer of treatment agent or slurry on the surface of the fiber tissue, wire and rope of the rubber skeleton material with a dipping machine or a scraper. The main harmful factors are benzene, toluene, xylene and gasoline.


(five) rubber shotcrete

A latex slurry made of mixed solvent of glue, ammonia, formaldehyde and gasoline is sprayed on the skeleton of the rubber product. The main harmful factors are ammonia, gasoline and formaldehyde.


(six) rubber molding

According to the requirements of the product, the sizing fabric is processed into the desired shape by manual or mechanical means.  The main harmful factors are talc dust, benzene, toluene, xylene and gasoline.


(seven) rubber vulcanization

Plastic rubber is heated and pressurized for a certain period of time. Under the combined action of various mixtures, the rubber molecule is crosslinked, and the linear structure is transformed into a three-dimensional network structure. The main harmful factors are hydrogen sulfide, sulfur dioxide, tellurium and other compounds, and high temperature.


(eight) rubber polishing

Rubber products such as rainshoes are brushed with a polishing agent of toluene and gasoline to make the surface of rubber products glossy.  The main harmful factors are toluene and gasoline.


(nine) flush cleaning

The boards, pipes and belts are cleaned and dried by boiling water or acid base. The main harmful factors are hydrogen sulfide, carbon disulfide, high temperature and noise.


(ten) weaving winding

The braiding and winding rubber tube blanks are made by winding fibers or copper wires on the braiding rubber tube or the inner rubber layer of the winding with a knitting machine and a winding machine.  The main harmful factor is noise.


(eleven) lead sulfide vulcanization

The rubber hose blank with good external rubber is coated with lead by lead-wrapping machine, then vulcanized, then the rubber hose blank is put on the lead-stripping machine, and the lead on the tube blank is stripped off. The main harmful factors are lead dust and lead smoke.


(twelve) rubber calendaring

It is processed by calender, including gluing, rubbing, pressing, weaving, embossing, pressing and so on. The main harmful factor is noise.


(thirteen) film extrusion

According to the production process requirements, through the calender and other equipment, the rubber compound is pressed into a certain shape film. The main harmful factors are organic dust.


(fourteen) cord fitting

The cut cord cloth is rolled into several layers of cylindrical cord cloth on the laminator and bonded tightly so as to be used in the subsequent process. The main harmful factors are organic dust.


(fifteen) cots roll core processing

Rubber roll metal core first remove oil stains and rust, and then sandblasting treatment, and then washed with gasoline, coated with adhesive paste. The main harmful factors are silica dust and gasoline.


(sixteen) cot surface processing

According to the hardness of cots, adopt different processing methods, first on the lathe, then with silicon carbide grinding wheel polishing, or with abrasive cloth polishing. The main harmful factors are silicon carbide dust and organic dust.


(seventeen) latex sponge preparation

The natural latex is first deaminated with formaldehyde, then mixed with synthetic latex, and then added with foaming agent and other accessories, through foaming gel, vulcanization washing, drying latex sponge. The main harmful factors are ammonia, formaldehyde, high temperature and radio frequency radiation.


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