Chongqing plastic water tank manufacturer
What are the functions of resin in plastic bucket production? In the same kind of plastics, when the filler content is high or the inorganic filler in the filler is increased, the shrinkage rate is small. The mold structure that is conducive to improving the molding pressure, increasing the plastic mold filling fluidity and making the plastic part dense can reduce the shrinkage rate of the plastic part. Any process factor that can make the plastic part dense and overflow the low molecular volatile matter before molding can reduce the shrinkage of the plastic part, such as preheating and pressurizing the phenolic plastic before molding. After heating, compacting and mixing in the barrel of the injection machine, the process of transforming loose powder or granular solid into continuous homogenized melt is called plasticization. Homogenization includes four aspects, that is, after the material is plasticized, the composition, density, viscosity and temperature distribution in the melt must be uniform. Metering refers to the preparation work that can ensure the injection machine to discharge the plasticized melt out of the barrel at a constant temperature, pressure and quantity through the plunger or screw, which needs the injection machine to control the plunger or screw during the plasticizing process.
Chongqing plastic water tank manufacturer
With the use rate of 200L large plastic barrels getting higher and higher, more and more old plastic barrels begin to appear gradually, including some plastic barrels that are broken during transportation, so we specially talk about how to repair the cracks on the plastic barrels. Now 200L plastic drums basically contract the transportation of chemical products, and the cost of plastic ton drums is also very high. If the old and damaged ton drums are replaced with new ones, the cost is too high. So let's talk about the repair of plastic buckets. Plastic buckets are indeed carriers for transporting chemical products, even dangerous plastic buckets, but they are not irreparable. The glue specially used to repair the plastic bucket is AB glue, which is composed of two kinds of glue liquids, one is hardener and the other is the glue. The combination of two liquids can achieve good bonding effect of zui, and the temperature must be appropriate. Although the use conditions are harsh, the bonding effect of the plastic bucket is extremely good. The 200L plastic bucket we usually use is always transported on the truck, and damage is inevitable during long-distance transportation. So many enterprises using plastic ton buckets will prepare sufficient AB glue.
Chongqing plastic water tank manufacturer
Why is the chemical barrel deformed? 1. In actual use, the chemical barrel will be deformed due to the great difference in the thickness of the barrel wall. However, the machines used to make chemical barrels in China are relatively backward, and there are fewer control points for wall thickness, which results in the asymmetry of the barrel body. Therefore, when formulating the standards for chemical barrels, they are also relatively loose. In some cases, the two relatively symmetrical wall thicknesses are about 2:1. The chemical barrel with uneven wall thickness is often judged as qualified when dissecting. 2. According to relevant people, the ambient temperature is the main factor causing the deformation of plastic chemical barrel. We should control the ambient temperature of plastic chemical barrel to prevent it from deformation. The plastic chemical barrel can carry a high heat of 108 degrees, and a low heat of 70 degrees below zero. Therefore, in general, the temperature of the liquid carried by the plastic chemical barrel should be 40 degrees below zero to 60 degrees below zero. If this value range is exceeded, when the chemical plastic bucket device weighs more or the temperature is higher, protective measures should be taken for the plastic chemical bucket to avoid deformation of the plastic chemical bucket. 3. After the chemical drum is filled with liquid goods, after the lid is tightly rotated, because it is airtight, when the liquid inside is cooled, the pressure inside the drum becomes smaller, while the external pressure is larger, forming the pressure difference between the surface and the inside of the drum, causing the deformation of the chemical drum. The inspection procedure for chemical drums clearly stipulates that they should be sealed and airtight. If the liquid inside is dangerous goods, the chemical drums for Class I dangerous goods should be able to accept a pressure of 30Kpa/cm2, and the plastic drums for Class II and III dangerous goods should also be able to accept a pressure of 20Kpa/cm2.
Chongqing plastic water tank manufacturer
The plastic bucket will leak after a long time of use. If we find a small hole after inspection, we can use adhesive to repair it. If the hole is relatively large, this method is not feasible. At this time, we can find some special tools for plastic welding to repair. Or use some suitable plastic buckets to weld to the leaking place. The above methods are aimed at the non serious water leakage phenomenon, so these methods are relatively simple and not applicable to those with serious water leakage. If it is a very serious water leakage, even if the welding method is used, it will work for a while, but it will still leak after a period of use. In this case, we recommend that you use a new plastic bucket to avoid serious water leakage. In addition, to prevent people from using plastic buckets, In the process of use, everyone should pay attention to the maintenance of the plastic bucket. Do not break it in use, which will shorten the service life of the plastic bucket.
Chongqing plastic water tank manufacturer
Chemical plastic bucket has good heat resistance and cold resistance, good hardness, tensile strength, electrical insulation performance and toughness, and good chemical stability. It is almost insoluble in any organic solvent at room temperature, resistant to corrosion of various acid, alkali and salt solutions, and has excellent resistance to environmental stress cracking and thermal stress cracking. Its surface hardness is high, Good dimensional stability. Chemical plastic bucket is easy to use, economical and durable. With the development of internationalization, plastic bucket has gradually become the mainstream product of liquid packaging. It can contain Class II and III dangerous goods. The liquid density for Class II dangerous goods is 1.5g/cm3, and the liquid density for Class III dangerous goods is 1.8g/cm3. The product structure is reasonable, firm and solid, which can be directly loaded and unloaded by forklift, and can be stacked and stored. The plastic container is light and not fragile. Chemical plastic buckets, plastic pots and bottles for daily food storage are mostly made of polyethylene or polypropylene, of which polyethylene is more common. PVC can also be made into containers such as barrels and basins, but like film, it cannot hold food, especially oil and wine. There are also pulse formaldehyde plastics commonly known as "Dianyu" and melamine formaldehyde plastics commonly known as "melamine". The raw materials contain formaldehyde. In the production process, if the polymerization is not good, free formaldehyde may appear in tableware. Formaldehyde is a highly toxic substance. If it is mixed with food, it will seriously damage human health. Therefore, good quality "electric jade" and "melamine" tableware and containers must be used. For inferior products, the relevant departments should strictly check to prevent them from coming out of the cage. Although polyethylene container can be used to hold food, it should also be noted when it is used to hold oil. Because polyethylene is soluble in oil, if it is stored for a long time, the color and taste of edible oil will also change, and even cannot be eaten, which is harmful to health.
