Polypropylene packaging with extrusion molding in the production of quality set question how to analysis?

Polypropylene packaging with extrusion molding in the production of quality set question how to analysis? ( 1) Tensile strip in front of the great error in (1) the width of the cooling water tank water temperature and the height of the liquid level fluctuation. (2) screw work speed is not stable, extrusion mould for melting capacity is unstable. The screw rotation speed is not stable work may be a belt skid. (3) to filter impurities in too much jam melting extrusion is uniform. ( 2) Extension after packing belt width dimension error (1) the tank water temperature fluctuations. (2) before and after tensile drawing roller speed is not stable or has a set of drawing roller speed instability. (3) traction tension roller with pressure is insufficient, cause with sliding occurs on the surface of the roller. ( 3) Product packaging with crack (1) filter rupture or small number of filter mesh. (2) forming die has decomposition material coke grains. (3) the transmission roller face clean, or smooth level off. ( 4) Product packaging with large bending degrees (1) production line the working shaft tube installation position is not correct, roller between center line parallel, or level. (2) traction tension roller with uneven pressure ( Refers to a set of drawing tension roll on the roll to roll under lateral pressure uneven) 。 (3) to run not to walk in the auxiliary linear direction swinging. ( 5) You pack the finished pattern is not clear (1) a foreign body embossing roll surface or stick a scrap. (2) horizontal pattern roller with up and down. To ( Width) Uneven pressure. (3) pattern roller embossing is working up and down the center line is not in a vertical plane. (4) with body temperature in the embossing is inconsistent.