The composite film cutting and processing of the common problems and solutions

Has many process of composite film production, this paper mainly introduces some in the composite film cutting and the common problems and solutions. A, longitudinal stripes: reason: 1, the tension is too large. 2, cutting machine guide roller is not parallel. 3, composite roll of film thickness error is big, in the thickness of thin areas prone to longitudinal wrinkle. 4, composite film has the obvious wrinkles. 5, paper tube bending. Solution: 1, usually as far as possible in the lower tension operate the equipment. 2, adjust the guide roll slitting machine. 3, to improve the quality of the composite film. 4, correct paper tube bending, improve the strength of paper tube. Second, the product surface is critical, uneven or lump, pitting: causes: 1, the composite roll of film thickness error ( This kind of failure tend to appear at the site of the thicker, the tension and the contact pressure is concentrated in the thicker part) 。 2, contact pressure. 3, winding is too tight. 4, cutting knife is not sharp, dust fall into the membrane. 5, poor sanitation, compound roll in foreign body or dust. 6, composite film electrostatic. 7, paper tube surface is uneven. Improvement measures: 1, to reduce the tension and contact pressure. 2, improve the quality of the composite film. 3, improve the operating environment. 4, anti-static measures. 5, replace the paper tube. Three, product end face changed: causes: 1, the winding is too loose. 2, composite roll of film thickness error is bigger. 3, winding become warped edge. 4, composite membrane surface friction coefficient, lateral sliding. 5, cutting speed is too fast. 6, scroll and contact roller parallelism deviation. 7, the acceleration and deceleration process too fast. Improvement measures: 1, adjust the tension, increase the contact pressure, the involvement of the restrictions on air volume. 2, improve the quality of the composite film. 3, adjust the cutting tool or replace the blade. 4, lower cutting speed especially when cutting and easy to slide material. 5, and slow to slow down or accelerate. Four, product end center department produce & quot; Chrysanthemum & quot; Shape pattern: reason: 1, the outer winding tension is too high, winding torque is stronger than the friction between the layers communicate, winding of interlayer sliding along the winding direction, make the center department produces chrysanthemum pattern. When the part in the process to produce lateral buckling. 2, product end beyond paper tube length, near the center of the area is no paper tube support, under the influence of the residual stresses in composite membrane deformation. Improvement measures: 1, reduce the winding tension, implement taper tension control, adjust the tension of the taper. 2, keep product end face and paper tube end face flush. Five, become warped edge: reason: 1, the cutting knife is not sharp or improper installation. 2, contact pressure. 3, feed tension. 4, choose cutter type is wrong. 5, cutting speed is too fast. Improvement measures: 1, replace the tool or check the installation of the state. 2, to reduce the contact pressure. 3, reduce feed tension. 4, depending on the type of material to choose the appropriate tool. 5, to reduce the speed.