Hubei plastic water tank wholesale
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.
Hubei plastic water tank wholesale
Bubbles sometimes appear in the production of plastic barrels. What will the production personnel do? Let the plastic bucket wholesale to answer for you. After the plastic bucket is filled with liquid, screw the vent cap, lie on the side for 1 minute, make the permeable film soak the liquid, and then store the plastic bucket vertically for 3-7 days or longer. The specific test time needs to be determined by oneself, and the temperature should follow the temperature under the practical application state (the bucket is placed in the oven after the liquid is filled). The storage temperature of the plastic bucket is generally 40-50 ℃. When the expected time is up, check whether the bucket expands. If there is slight swelling, the demander will decide whether to use it; If there is serious bulge, it is determined that this ventilation cover is not applicable.
Hubei plastic water tank wholesale
How to deal with cracks in the plastic bucket? Generally, in the process of manufacturing 200L plastic barrel, the materials used are basically polyethylene, polyester and other plastics, which are then processed by blow molding. In practice, we can use 200L plastic barrels to hold glacial acetic acid, petroleum dangerous goods, acid and alkali corrosive drugs, etc. In general, it has many advantages. For example, in practice, using this 200L plastic bucket is not only not easy to damage and rust, but also relatively simple and sensitive. In addition, it also has excellent oil resistance and strong corrosion resistance. Therefore, in terms of current application, we can use this plastic bucket to package dangerous goods. Its primary characteristics are non fragile, non rusting, oil resistant, corrosion resistant, thermal insulation and moisture-proof. In addition, after the materials are loaded, we can also fold, stack, store, transport, stack and can 200L plastic barrels according to the order and requirements. In this way, not only can users save a lot of space, but also can save some data. This data actually belongs to macromolecular organic compounds, which can exist in various forms, such as liquid, solid, colloid, solution, etc. The capacity of plastic bucket is different due to the different contents of plastic bucket. In addition, 200L plastic bucket can be manufactured by different processing methods. Generally, the materials used can be divided into thermosetting and thermoplastic materials. However, the former cannot be depicted from scratch, while the latter can be used repeatedly in production.
Hubei plastic water tank wholesale
How to restore the gloss of the surface of plastic packaging barrels? First, the reason for the mold: whether the cooling system of the mold has water leakage, or whether the sealing system of the mold has been damaged due to corrosion due to long-term operation. If there is water leakage in a single direction of the mold, and the leaking water flows into the mold, causing the barrel wall to be dull, it is only necessary to replace the sealing strip to deal with the problem of water leakage in the plastic barrel. If the exhaust system of the mold is not good, which leads to excessive gas remaining in the mold during production, causing the brightness of the barrel wall to decline, then it is necessary to check the exhaust system of the repair mold. Of course, it may also be the problem of raw materials. First, understand its materials and functions, and adjust a reasonable process formula. If the sol fluidity of the material after heating is poor, the barrel wall will appear to be not bright enough. Properly add some low-pressure resins, improve the barrel temperature, and deal with other related problems.
