In the process of ore ton bag processing, product materials need to be prepared, and material mixing is an indispensable link. The following is a brief introduction to the specific operation steps of this process.
When mixing new and old raw materials, special attention should be paid to the uniformity of mixing, and at the same time, raw materials with similar melt indices should be selected for compounding. If the melt index difference of the raw materials is too large, the difference in melting temperature will be large, and the plasticization cannot be uniform at the same time during the plasticizing extrusion process, which will seriously affect the stretching, resulting in a decrease in the quality of the flat yarn. Production. During the mixing process, pay attention to the drying time and temperature of the raw materials.
Check the cleanliness of big bags
Our country has relatively strict testing methods for packaging products such as ton bags in terms of cleaning. What is the testing method for ton bags?
The newly added detection method is: measure with a ruler accurate to 1mm. A container bag of about lm on the eye side (such as 550 × 900ram is 1m2), if the diameter of the oil stain on it is far less than 8mm, the number is far less than the cleaning According to the requirements of the project, it can be qualified by -y-0. If it is close to the requirements of the cleaning project, use a ruler to measure the width of the bag surface and calculate the area, and perform detailed calculations. If the diameter of the oil stain is found to be close to 8mm, it should be carefully measured The size of the oil stain (Ⅱ×82=50mm).
For such a detection method, each big bag manufacturer basically implements in strict accordance with the relevant requirements, but for some big bag products with special requirements, it will be different, which is also due to its different uses and the requirements of each manufacturer. difference made by different.