In puzzle toy production process, from three aspects as solid, liquid, gas, the waste may be produced are: solid -
In the production of injection molding or extrusion boot, shutdown of the washing machine, injection molding production material, sheet production scrap, all kinds of production of waste and the ground material.
The processing of solid wastes can be recycled, without any pollution, but also because 50% of carbon reduction effect and received.
The liquid -
Mainly used for cooling water and heating oil for heating and cooling of the corresponding equipment, all belong to the closed cycle heat conduction, without any pollution.
Extrusion tubes, although in granulation production product has contact with water, but it won't produce any pollution.
The gas -
Many gases source, specific, such as printing, coating, composite, release agent, hot working volatile gas, etc. , some belongs to organic vapors VOC, some inorganic volatile gases such as hydrogen chloride and hydrogen sulfide, and so on, these will have different degree of environment pollution.
Although there were not included in the scope of environmental emissions monitoring, the key monitoring object, a step by step of each enterprise to attract attention.
What is a VOC gas?
Is in the 50 -
260 ℃ temperature range is easy to volatile organic compounds, one of the more common organic compounds with benzene class (
Such as benzene, toluene, xylene, ethylbenzene, styrene)
, alkanes (
Fourteen carbon alkanes)
, alcohols (
, ethers, esters (
And ketone (
, and many other species.
Why to limit the VOC gas?
Because after VOC gases released into the atmosphere in sunlight can catalytic its produce chemical reaction, production PM2.
Five particles, is the main culprit of the ash haze weather.
Jigsaw puzzle of volatile gases come from?
1, printing is still is given priority to with solvent ink, ink contains a large amount of solvent.
Using solvent ink will be produced in the process of printing, drying and so on benzene, toluene, xylene, acetone, butanol, acetone and ethyl acetate VOCs pollution.
Water-based ink as low as 20%, the organic solvent content of polyethylene film table is printed can also, but the difficulty, of can, difficulty of HDPE LDPE, monochrome can be fuzzy, but the color matching line.
Drying equipment to increase the infrared drying device, speed up the factor.
2, composite acrylic and polyurethane adhesive is given priority to with ethyl acetate solvent.
3, spraying coating surface gate mark can eliminate jigsaw puzzle, welding scar, black spots, and crystal defects, bubble and so on, to give products with conductive, antistatic, flame retardant, wear-resisting, etc, can also be dark puzzle toys into light color products.
These needs are often spraying a layer of acrylic ester or urethane coatings.
4, demoulding agent with dichloromethane, dichloroethane and other organic solvents.
5, hot working gas heating the volatile gas in addition to including the VOC, there could be hydrogen chloride and hydrogen sulfide, carbon dioxide and water, sulfur dioxide, and so on.
Residual gas sources include resin synthesis, additives added, processing decomposition of three parts.
Resin synthetic raw material residual residual raw materials mainly include monomer, solvent, catalyst, emulsifier and molecular weight regulator, etc.
Adding additives including packing, plasticizer, stabilizer, lubricants, pigment and other additives, the small molecule additives such as stearic acid, paraffin wax, polyethylene wax, EBS, antioxidant, zinc stearate, etc.
Thermal decomposition gas each kind of plastic has a decomposition temperature, in the process of high temperature processing, plastic more or less will be resolved with a small amount of gas material.