custom biobased fruit fork production process: custom biobased fruit fork in the molten state of rheology is better, the influence of pressure on viscosity than temperature is greater, therefore, mainly from the pressure to change the flow of the melt. Plastic bottles have different application states in different environments, so it is useful to control rheology and viscosity in the molten state of the plastic bottle.

1, injection molding machine selection. custom biobased fruit fork Because the time of stability after the melting point is short, and the melting point is high, it is necessary to choose the injection system with more temperature control sections and less self-friction heat generation during plasticization, and the actual component of the product (water mouth material) can not be less than 2/3 of the machine injection amount. The selection of injection molding machine needs to be reasonably controlled according to the injection volume of the machine and the injection system.

2, plastic processing. Because custom biobased fruit fork macromolecules contain lipid groups, with certain hydrophilicity, the grain is more sensitive to water at high temperatures, when the water content exceeds the limit, the molecular weight of custom biobased fruit fork decreases in processing, and the products are colored and brittle. Therefore, it is necessary to dry the material before processing, and the drying temperature is 150 ° C for more than 4 hours, generally 170 ° C for 3-4 hours. Air fire can be used to check whether the data is completely dry. When using materials, it is necessary to dry the materials, pay attention to different drying temperatures and time limits, and ensure that the plastic bottles produced have outstanding product functions. Generally, the proportion of recycled materials should not exceed 25%, and the recycled materials should be completely dry.

3. Stay in time. Do not use too long residence time to prevent molecular weight drop. Try to avoid temperatures above 300 ° C. If the shutdown is less than 15 minutes. Only air fire processing is required; If it exceeds 15 minutes, it should be cleaned with viscosity PE, and the barrel temperature should be lowered to PE temperature until it is turned on again. In the plastic bottle to stay time to carry out strict control, different temperatures in the need for different treatment, to strictly grasp the restrictions of the moment.

4. Mold and gate planning. custom biobased fruit fork is generally formed with hot runner mold, mold and injection molding machine template between the heat insulation plate, the thickness of about 12mm, and the heat insulation plate must be able to withstand high pressure. The exhaust is necessary to be sufficient to avoid local overheating or fragmentation, but the depth of the exhaust port is generally not more than 0.03mm, otherwise it is easy to occur flash.

5, the lower the back pressure, the better to avoid wear. Generally not more than 100bar. Generally do not need to use.

6. Injection speed. Generally, the injection speed should be fast, which can prevent premature solidification when the injection is given. But too fast, high shear rate makes the material fragile. The shot is usually completed within 4 seconds.

7. Precautions

① The recycled material can not be too large, otherwise it is easy to "bridge" at the bottom of the material and affect plasticization, when recycling plastics, strictly control the quantity of recycled materials to ensure the plasticization quality of plastics.

If the mold temperature control is not good or the material temperature control is improper, it is easy to occur "white fog" and not clear. It is necessary to strictly control the mold temperature, otherwise it will show things that you do not want to see, the mold temperature is low and uniform, the cooling speed is fast, and the product is clear with less crystallization. The production process of plastic bottles requires strict quality system inspection to ensure that the plastic bottles produced have outstanding product quality and assurance. The production process is complex and requires strict control of different production processes to ensure that each process is strictly carried out in accordance with the specifications.

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