Vacuum packaging common quality problems and solutions

Problem description the reason analysis and correction and corrective action vacuum bag wrinkle 1, base material thickness is not uniform, thin films are too big. 2, base material roll deflection. 3, excessive or insufficient amount of glue in the, interlayer sliding occurs; Uneven glue can also cause the occurrence of local buckling. 4 not fully dry, adhesives, residual solvent is too much, stick relay is small, compound after two base material to produce displacement. 5, composite film winding directly, without enough cooling or cooling high temperature soft composite membrane wrinkle easily. 6, tension of composite pressure Settings. 7, tension control, put, winding tension not harmonious, don't match. 8, the guide roller is not parallel. 9, the guide roller surface is not clean, stick with foreign body, or guide roller surface is not flat, there are potholes, his word, bruising, etc. 1, change the quality qualified film. 2, the position of the adjust film, make its deflection does not occur in the process of transmission. 3, adjust the amount of glue, and uniform coating. 4, adjusting process parameters, the adhesive can be fully dry, reduce residual solvents. 5, composite film shall be carried out in a first after sufficient cooling again winding. 6, composite pressure adjustment. 7 to adjust volume and winding tension, make each part of the tension match each other. 8, adjust the parallelism of the guide roller. 9, clean the surface of guide rod, replace the damaged guide rod, ensure the guide roller surface level off, smooth, clean. Composite bags sticky 1, printing process, the ink drying speed and printing speed does not adapt, leading some solvent still remain after the printing ink layer, to soften ink layer, so that the composite membrane is sticky. 2, adhesive is not completely dry, residual solvents gradually infiltrate the ink layer, make the ink layer bate hair sticks. 3, plasticizer migration to the ink layer of plastic film, so that the membrane softening sticky 1, according to the actual situation, adjust the ink drying speed, and make it fully dry 2, adjusting the process parameters, guarantee the adhesive can fully dry, make control within a minimum amount of residual solvents. 3, replace the plastic film bags & other; Small pitting & throughout; With impurities in 1, adhesives, workshop environment too much dust in the air, after the glue drying in hot air blowing out in the tiny dust, dust sticky on the rubber and compound was sandwiched between two layers of basement membrane. 2, two-component reactive adhesives solvent easily influenced by temperature and pale, feculence, causes & other Small pitting & throughout; The increase. 1, filter adhesive; Keep the environment clean; Keep the glue, glue plate cleaning barrel; In drying tunnel inlet with high mesh filter or other filtering material remove dust from the air. 2 、“ Muddy white & throughout; The adhesive agent can no longer use. Aluminum plating peel strength difference 1 packet, aluminum plating film aluminum layer adhesion is poor, easy to fall off. 2, aluminum plating film surface tension is too low. 3, improper glue type. 4, glue dry enough, residual ethyl acetate to infiltrate ink layer, make a printing ink to soften, loose, and even take off the floor. 5, glue is enough. 6, thinner, ethyl ester of purity is not high, the content of the active material such as water or alcohol on the high side, consume a part of curing agent, cause the adhesive ratio of main agent and curing agent of inappropriate. 7, compound on the surface of steel roller temperature is low, or composite pressure is too small 8, composite membrane curing incomplete. 1, the replacement of high quality aluminum plating film. 2, to the aluminum plating film corona treatment or replace aluminum plating film. 3, choose aluminum plating film special glue adhesion agent. 4, adjust the composite process, improve the drying tunnel drying temperature, or appropriate to reduce the composite linear velocity, ensure rubber agent can fully dry. 5, raise the glue quantity. 6, replace the qualified thinner, to strengthen the inspection work of diluent. 7, appropriately raise the surface temperature of the composite film roll, or composite pressure increased. 8, raise the curing temperature, ensure the composite membrane can fully cured. Aluminized bag showing spots 1, adhesive improper selection, aluminized layer affinity for common adhesives is poorer, coating performance is poor, if uneven coating, spot phenomenon will occur. 2, the residue solvent adhesive solution is more, after printing membrane complex, ink layer infiltration by the residue solvent adhesive solution can produce spot phenomenon. Light color ink, in particular, reflected light through the ink layer and the aluminum layer spots. 4, insufficient amount of glue or uneven coating, composite film of mixed with bubbles. 1, choose aluminum plating film special glue adhesion agent. Ensure the adhesive can fully dry. 3, strong hiding power from selective ink or ink and ink layer. 4, appropriate to improve the adhesive glue, and check the status of a rubber roller, to ensure uniform coating.