Problems and solutions in PP particle production
The common problem of producing PP packing belt particles is that the particles are more than twice the normal. At this time, the process needs to be adjusted. Pay attention to the inspection of the pelletized motorized knife, and replace the damaged moving knife in time. For the long strips, you can use a suitable vibrating screen for sieving. deal with.Sometimes there will be two or more PP packing belt particles connected to the phenomenon, the main reasons are broken strips when drawing, the length of the water is not enough, etc. When extruding the draw bar, use a guide bar with a suitable width, separate the connected bars, and adjust the appropriate cooling water length to reduce the continuous particles. For the continuous particles, a suitable vibrating screen can be used to screen .
When the black spots appear on the surface of the PP packing belt particles, it means that the machine is not clean, there are black spots in the raw materials or are polluted by the environment, as long as the machine is cleaned again, the incoming material inspection is strengthened, and the surrounding environmental hygiene protection is sufficient.
High quality PP packing belt particle selection material should pay attention to method
There are many different manufacturers of recycled PP packing belt pellets on the market. The quality of recycled PP packing belt pellets is different. We need to compare the quality of recycled PP packing belt pellets. How to separate more high-quality recycled PP We need some ways to pack granules.
First-grade recycled PP packing belt particles: refers to the raw material used is the leftover material, also known as the leftover material, and some are spout material, plastic head material, etc., the quality is relatively good, unused, in processing In the process of new material, the remaining small corners, or recycled PP packing belt particles with unqualified quality.
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The recycled PP packing belt particles processed from these wool materials have better transparency, and the quality of the recycled PP packing belt particles can be compared with the new material, so it is called first-grade recycled PP packing belt particles or super-grade recycled PP Packed with particles.
Secondary recycled PP packing belt particles: refers to the raw materials that have been used once, (except for high-pressure recycling PP packing belt particles, most of which use imported large parts in high-pressure recycling PP packing belt particles, if the imported large parts are industrial films, It has not been exposed to the sun, so its quality is also very good. The processed PP packing tape particles have good transparency) At this time, it should also be judged according to the brightness and surface roughness of the recycled PP packing tape particles.
Three-stage recycled PP packing belt particles: refers to the raw material that has been used twice or more times, and the processed PP packing belt particles are not very good in terms of elasticity and toughness, and can only be used for injection molding. The first and second grade PP packing belt particles can be used for film blowing and wire drawing.
Look at the brightness of the surface of the recycled PP packing tape particles. Let's take a look at the whiteness of the recycled PP packing tape particles, not only the whiteness surface, but also the cross part. Therefore, as a better distinction between high-quality recycled PP packing tape particles, let's try to regenerate the hardness of the PP packing tape particles, biting the bar with our teeth to regenerate the PP packing tape particles, the excellent quality is hard and soft, we give up It is definitely not a good recycled PP packing belt particles. The recycled PP packing belt particles are on the water, and the recycled PP packing belt particles can also be seen not to be submerged by water, and cannot be submerged by pure recycled PP packing belt particles.
