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Is there any pollution in the processing of plastic raw materials?
- Yes, we have.The plastic itself contains chemicals, in the production process, will react with other substances, produce some odor and so on, so in the production environment must be ventilated, and will produce gas in the process of mechanical production, in production and after the residue, waste water and so on, these are the production of pollution.s
Why is the dimensional accuracy of molded plastic parts much lower than the accuracy of machined products?
- Because the plastic parts in the production process has obvious phenomenon of thermal expansion and contraction, mold design and manufacture in human made amplification processing, the magnification according to the important performance index of plastic shrinkage rate, which is a statistical index, and unstable. Therefore, the precision of plastic products is lower than that of machined products by 1~2 grades.s
I just built a small plastic bucket processing plant equipment
- The reason why there is no sales price or quality problems?AskNeither price is lower than others, quality can be problem without production licenseChasing the answerDoes it depend on relationships?s
The manufacturing process of plastic products? Who knows?
- (4) blow molding: hollow blow molding or hollow molding. Blow molding is resin parison with compressed air pressure in the heat of the closed mold blowing for a method of hollow products, including blow molding and blow molding hollow blown film products two methods. By blowing method can produce film products, all kinds of bottles, cans, pots and containers of children's toys.(5) calender is resin processing is expected to close by various additives (kneading, filter etc.) through the calender of two or more in favor of the opposing calender roll gap is processed into a film or sheet, then from the calender roller peeling off, and then by a molding method for cooling and shaping. Calendering is mainly used in the molding process of PVC resin. It can make films, sheets, plates, artificial leather, floor tiles and other products.(7) foaming material (PVC, PE and PS etc.) adding proper foaming agent to make plastic produce microporous structure. Almost all thermosetting and thermoplastic plastics can be made into foam plastics. According to the pore structure is divided into open celled foams (feel most connected with each other and closed cell foam pores) (most pores are separated from each other), which is mainly composed of manufacturing methods (including chemical foaming, physical foaming and foaming machine) decision. I hope it helps, thank yous
What kind of equipment does the groove on the PP plastic board work on?
- It can be machined with a shaper or engraving machines
The difference between plasticization and processability of plastics in extrusion process
- I. Introduction of extruderIn the screw extruder is under the action of the molten plastic extrusion through fixed shape extrusion, water cooling after cutting in the traction machine under the same section is mainly used for a variety of products. A large number of continuous production, such as tube, rod, profile, also can be used for plastic modification and granulation. The basic mechanism of extrusion is very simple a screw in the cylinder to rotate and move forward the plastic. The screw is actually a ramp or slope that is wound around the center layer. The aim is to increase the pressure to overcome the greater resistance. Is an extruder, there are 3 kinds of resistance to overcome: solid particles (feed) on the cylinder wall friction and screw rotation before laps (feed) the mutual friction between them; melt in the cylinder wall adhesion; melt pushed forward when the resistance of the internal logistics.s
What are the standard tolerances for engineering plastic products machined (e.g. lathes, milling machines)?
- No, look at the drawings, requirements, no note tolerances, drawings should be marked, and if there is no mark, then there is a problem with drawings. Drawing requires that all elements be annotated.s
Where plastic processing plant is more, better?
- What other plastic pot instead of well, to know a few thousands of large plastic mold, many tens of thousands of large; if you need a lot of, clear their own requirements, I think there are many manufacturers are willing to do, your preferred OK.s
PP board construction tool list
- construction tool list 1：marble machine Purpose: cutting Method: 1 to make a simple platform for better control of cutting size and angle; 2 to adjust the cutting size, start the...
The Lightweight Durability of Aluminum Sheets
- In the 1970's, there was a large-scale movement for beverage companies to stop using steel cans for soda pop and beer. Their existed the need to switch to an alternative materi...
what is the best lawn mower？
- What is the best lawn mower？The effect of the best lawn mower must be very high.In general,each mower mowing 8 × 667m2 per day or more,its efficacy is equivalent to 16 times of ...
where to buy a lawn mower
- Where to buy a lawn mower？Are you still mad about the problem?Let me help you to solve it. Where to buy a lawn mower？If you want to buy a lawn mower, then we must go to the OKo...
What is the problem about the lawn mower
- 1，Why use the throttle when the lawn mower is working？ When the lawn cut grass, it relies on the high-speed rotating blade to cut the grass,if the line speed is not enough, the...