The hygroscopicity of most plastics directly affects the quality of the product. Therefore, in order to produce high quality plastic products, it is necessary to pay attention to the choice of drying method. Most plastics are hygroscopic. When the plastic pellets are taken out of the moisture-proof sealed package and exposed to the atmosphere, they begin to absorb the moisture in the air and are affected by the length of exposure. The plastic with too high water content will produce a hydrolysis reaction (Hydolyses), which will significantly reduce the mechanical properties and appearance quality of the product. The hydrolysis reaction will also cause the plasticity to increase rapidly, resulting in excessive filling. The product and the shallow mucosa or burrs, in this case produced defective products, the performance is extremely poor.

Engineering plastic products have excellent temperature resistance, weather resistance, small shrinkage, dimensional stability, toughness and wear resistance, good electrical resistance, etc., but the real problem is that the processing conditions are higher, if before production If the plastic is not dried well, the above advantages will not be achieved. For example, when the moisture content of the nylon plastic is too high, it is easy to find the silver flower and the bubble on the appearance of the product, and when the moisture content of the PET is too high, the surface of the product is on the surface. It does not produce silver flower, but its impact resistance, elongation and tensile strength are significantly reduced. Therefore, in order to produce high-quality plastic products, we must first pay attention to the choice of production equipment, plastic dryer is a better tool for plastic drying.

Dryer selection and use

When to use

When the drying effect of plastic raw materials is below 200PPM, it is necessary to select a plastic dryer and use it with a hot air drying (cylinder) box. It is a good tool for plastic drying. To produce high quality plastic products, we must first pay attention to the choice of production equipment. The rules of the plastic drying process.

Production of products or materials, as described below, must be matched with plastic dryers: 1. Use plastic materials with strong hygroscopicity, such as PET, PBT, PC, PA, PMMA, etc. 2. When producing transparent products, such as PMMA, PC, etc. 3. When the manufactured products have performance requirements such as tensile strength and impact strength. 4. Products such as LCD backlights, optical discs, optical lenses and other light-guide parts.

Vacuum plastic dryer

The patented vacuum plastic dryer can prevent acidification, deterioration, yellowing and other problems of materials without drying any chemicals, and will not pollute the raw materials in the cylinder and be easy to clean. Small batches and continuous drying ensure the drying effect of the raw materials and prevent the possibility of re-absorption of the raw materials. The vacuum method is used to achieve fast drying effect, shorten drying time, increase productivity, and save energy. It is an indispensable equipment for next-generation optical products. At the same time, the lightweight barrel design, refueling saves time and effort, for the small number of different orders, it is a big tool.

Use this equipment to dry plastic, no need to match the hopper dryer, and use the general plastic dryer to match the hopper dryer to play its role. At the same time, taking PMMA raw material manufacturers as an example, it takes 4 hours from the start to the production. In order to avoid the shortage of materials, when purchasing equipment, the equipment needs to buy four times the capacity to ensure smooth production. If this equipment is used, Innovative drying method, patented small batch, continuous drying design, the capacity needs to be increased, and it can be calculated according to the hourly processing capacity.

At the same time, it has the following advantages:

(1) Shorter working hours: processing the same amount of PMMA plastic, vacuum plastic drying machine can save 75 to 83% of working hours.

(2) Space saving: Compared with the general type, the vacuum type and the general type must be combined with the hopper dryer to save 50% of the area.

(3) Reducing energy consumption: The electric heating tube can reduce the power consumption by 59%, and the energy saving brought by the time saving can reach more than 60%.

(4) Low carbon emission: Treating the same amount of 1200kg of PMMA plastic, the carbon reduction efficiency is about 70%.

(5) Improve product transparency.

(6) Increased production capacity, using PMMA raw materials to produce 2mm thick small-sized light guide plates, for example, can produce 200 finished products per hour, 24 hours of uninterrupted production, the overall production capacity can be increased by 15%, and the plastic drying is not complete. The rate can be reduced by 30%.

(7) Replace consumables. The vacuum principle is used to quickly dry the plastic without replacing the plastic wheel and the molecular sieve, and the cooling water is avoided, thereby achieving the effect of environmental protection and waste reduction.

(8) Improve profitability, and use this equipment to see the results of profit improvement in terms of working hours, electricity bills, consumables, non-performing rates and production capacity.

MONELÂ®

The registered trademark name, Monel, is applied as the prefix name to several corrosion resistant alloys produced by Special Metals Corporation. These alloys are nickel-based and exhibit traits that include high resistance to atmospheric corrosion, salt water, and various acid and alkaline solutions.

Alloys of identical chemical and mechanical properties are available from other manufacturers and offer excellent alternatives to the various MonelÂ® brand alloys.

The corrosion-resistant alloy is widely used in the marine, oil and chemical processing industries.

Monel Availability

Mega Mex supplies Monel 400, K-500 & R-405. Most of these grades are available in the form of plate, sheet, pipe, tubing, fittings, bar, wire and rod.

What are the Characteristics of Monel ?

Good resistance to acids such as hydrofluoric and sulfuric acid
Highly resistant to alkalis
Malleable
Highly corrosion resistant
Stronger than steel

In what Applications are Monel alloys used ?

Pump shafts, oil-well tools, instruments, doctor blades and scrapers, springs, valve trim, fasteners, marine propeller shafts
Marine components
Chemical and hydrocarbon processing equipment
Valves, pumps, shafts, fittings, heat exchangers

Monel Trivia

Monel was discovered by Robert Crooks Stanley who worked for the International Nickel Company in 1901. The new alloy was named in honor of the president of the company, Ambrose Monell.

*MonelÂ® is a registered trademark of Special Metals Corporation group of Companies.

Monel Pipe

Monel Pipe,Monel 400 Pipe,Monel Steel Pipe

YUHONG GROUP CO.,LIMITED , https://www.jessro-pipefittings.com