Foshan plastic water tank price
When wholesaling plastic buckets, you must pay attention to the choice of plastic materials! The wholesale orientation of plastic drums can only be carried out in the viscous flow state. Both chain segment orientation and whole chain orientation are thermodynamic non-equilibrium states. When the external force is released, the chain will be in a random state again due to the thermal movement of molecules, which is called solution retrieval. Only when the chain segment or molecular chain after removal is rapidly cooled to the glass transition temperature can the removal space be retained. This "frozen" orientation is only relatively stable, and it will also be slowly de oriented. As the material temperature increases, the recovery will rapidly advance ˉ The orientation of molecular chains will be produced in the melting process of plastics, such as injection and extrusion. The effect of orientation on the product is the anisotropy of properties. The strength and modulus in the orientation direction increase significantly, and the strength and modulus perpendicular to the orientation direction decrease significantly. This is because the atoms of the molecular chain in the orientation direction are bound by chemical bonds, while the force between the molecular chains perpendicular to the orientation direction is the van der Waals force.
Foshan plastic water tank price
The analysis and inspection of the quality of the molding raw materials shall be based on the requirements of the process characteristics of the injection molding raw materials. The water content, fineness, impurities, uniformity, color and luster of the raw materials shall be inspected, and the fluidity, thermal stability, shrinkage and other indicators shall be tested. If problems occur in the inspection, measures shall be taken in time to solve them. Preheating and drying: For plastics with strong moisture absorption, such as polycarbonate, ABS, nylon, etc., before molding, according to the moisture content requirements allowed by the molding process, fully preheat and dry them to remove excessive volatile matter and moisture in the materials, so as to prevent bubbles and silver filaments in the molded plastic parts, and also to avoid water degradation during injection. In injection molding production, in order to make the plastic parts easier to come out of the mold, some also need to coat a layer of release agent on the mold cavity or mold core. The commonly used release agents are silicone oil, zinc stearate, liquid paraffin, etc. For soft products or transparent products containing rubber, it is not recommended to use release agent for demoulding, otherwise the transparency of the products will be affected. In production, if it is necessary to change the type of plastic, change the color, change the material, or find that thermal decomposition or degradation reaction occurs in the molding process, the barrel of the injection machine should be cleaned. The barrel of plunger injection machine must be disassembled for cleaning. The spiral charging drum can be cleaned by air injection method. When the air injection method is used to clean the spiral carbon cylinder, if the molding temperature of the plastic to be replaced is lower than the molding temperature of the residue in the cylinder, first raise the temperature of the cylinder and nozzle to the molding temperature of the plastic to be replaced, cut off the power supply and add the return material of the plastic to be replaced, and then continue air injection to remove all the residue. Usually, after the plastic buckets are filled, they are stacked to reduce the storage space, which requires that the plastic buckets can also bear a certain weight.
Foshan plastic water tank price
Three points are summarized for you, hoping to help you choose high-quality plastic chemical barrels. 1. Look at the material: the material of plastic determines the basic characteristics of plastic containers. Plastic packaging containers with the same or similar shapes may have extremely large differences in use performance due to different materials. The price of plastic barrels is different for different materials. 2. Look at the model: different specifications of plastic barrels have different capacities and bear different pressures, depending on the needs of your own products. 3. Look at the thickness: the thickness is very important under the same capacity, which is mainly determined by the materials in place.
Foshan plastic water tank price
1： Measurement of the overall height of the plastic bucket. The overall height of the plastic bucket refers to the vertical distance from the bottle mouth to the bottom of the bottle. The measurement method is to place the plastic bucket on a horizontal plane, contact one end of the vernier caliper with the extreme high point of the bottle mouth, rotate the bottle body 360 degrees, read the maximum and minimum values respectively, and compare the data with the size of the design drawing to see whether they are consistent. If the specification of the plastic bucket is 40-60ml, its height should be controlled within ± 0.5mm. 2： Measurement of the outer diameter of the plastic bucket mouth. For the measurement of this part, the method is to span the scale of the measuring tool across the center of the bottle mouth, avoid the position of the mold closing line of the bottle body, rotate the circular bottle mouth 360 degrees with the main shaft close to the thread of the mouth, measure the maximum and minimum values, and compare with the bottle design drawings. The external diameter error should be controlled within ± 0.1mm. 3： Measurement of the overall diameter of the plastic bucket. For the measurement of this part, the method is to use the measuring surface of the vernier caliper to contact the measuring position of the maximum outer diameter of the bottle body, close the vernier caliper, rotate the plastic can body 360 degrees, and read the maximum and minimum values. The error of its overall diameter should be controlled within 0. 1mm. 4： Measurement of the wall thickness of each part of the plastic barrel. For the pharmaceutical plastic barrel with a circular revolving body, cut the measuring area of the symmetrical part with a knife, so that the measuring tool can enter the detection point where each part of the bottle can be measured. Strictly measure the symmetrical part of the thickness of the plastic barrel mouth, shoulder, body, and bottle bottom, and read the maximum and minimum values, Compare with the design drawing data, and check whether the tolerance of thickness dimensions of each part of the plastic bucket is within the standard range.
Foshan plastic water tank price
Briefly describe the repair method of the damaged packaging barrel: first remove the external dirt on the damaged part of the packaging barrel, first wipe off the dirt with a rag, and then scrape out new debris with a knife. If there is any oil stain, first use hot alkaline water to remove the oil, then wash the alkaline solution with clean water, and then use a knife to scrape the surface. When patching cracks, it is necessary to cut a plastic sheet of the same type that is slightly longer and wider than the crack, and has no aging, and treat the appearance. Then, at the place where the packaging barrel is broken, all of them are glued in order, and wet cloth is used to press them to make the bonding more tight. The packaging barrel is beautiful in appearance, smooth in appearance, seamless in appearance, light in weight, good in strength, impact resistant, non-toxic and tasteless, convenient in transportation, and has a long service life. Under the conditions of normal filling, transportation, loading and unloading, the warranty period is 1.5 years. The technical parameters of the product should strictly comply with the standards, and the product appearance design and product dimensions can also be customized according to the needs. Hot filling can be used, and the general temperature should not exceed 60 ℃. The lid and stacking shall not be closed until the contents have cooled sufficiently and dropped to room temperature. Chemical packaging barrels are mostly made of plastic, commonly known as plastic chemical barrels or plastic chemical barrels. They are developed and blown with scientific formulas. They are beautiful and generous in appearance, prevent leakage, and will not deform. They are ideal for long-distance transportation of packaging materials for chemical products. The chemical packaging barrel has good anti-corrosion performance, and a variety of raw material "O" type sealing rings are selected to meet different filling requirements. The residual amount after dumping is small, and it can be used more than 20 times under normal filling, transportation and loading and unloading conditions. It not only saves energy but also reduces the cost of use.
