10% profile, which is a profile, is the object we want to learn, at the same time learning profiles 10%, Xiao Bian that, we should also learn something about the profile, so the profile of learning can help 10% , but also make us more open and abundant knowledge and can learn by analogy, so the following small series to introduce the profile in the production, which is generally encountered problem is to analyze the two, as follows.
        One problem: block mold
        In the die exit, the parison generally will be subject to three forces, a melt die swell force, drawing the parison and the parison cooling contraction force of contraction, if traction speed is smaller than the parison extrusion rate, then there will be blocking mode phenomenon, its causes and treatment of produced are:
        1, tractor skidding, or traction is very small, so that the profile surface treatment method to keep dry, good up and down to adjust the positive pressure track.
        2, tractor speed is not stable, sometimes fast and sometimes slow, processing methods for the tractor to check to find out the specific reasons for the exclusion.
        3, the parison can not support the traction treatment method for the temperature to cool the barrel.
        4, the vacuum calibrator tank or too much, resulting in profiles of great resistance by the processing method to reduce the degree of vacuum calibrators or tank, down to an appropriate value.
        5, the excess lubricant, resulting in unstable extrusion speed, processing methods to reduce the amount of lubricant.
        6, jaws mouth slit stereotypes die uneven approach to check for sizing die positioning systems, and whether plate wrong equipment.
        Question two: Vibration
        If the profile traction process, subject to significant opposition, it will vibrate, resulting in the profile is formed on the surface vibration, and perpendicular to the direction of traction, it will affect the surface quality of the profile, but also to die for, is also a disadvantage, it would exacerbate mold wear, thus affecting the life of mold.
        There are two main aspects, one is the production of vacuum degree profile is too large, on the other hand is unreasonable size of the mold. For the former, we simply reduce the degree of vacuum to the appropriate value on it, for the latter, we will have to die for repairs. When the mold repair, repair should be finalized block, if you still can not completely remove the resistance, it should consider stereotypes die repair, thereby to eliminate the resistance problem.