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 Posted: Sat 21:55, 07 May 2011 Post subject: ed hardy suomessa Several common packaging film qu |
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Some common packaging film quality
Technique, equipment, environment and other factors, there will be film blistering, wrinkling, back ink, from skin stripping phenomenon following specific situations we talk about how to avoid the development of these phenomena. Our factory is the only one set of Huaibei packaging, printed in one of the manufacturer. Anhui hole where there are well-known group, which sold several million tons a year hole in the wine series, the packaging is not only large, but more stringent quality requirements. Wine box in the first film in the film has appeared in the free air bubbles, wrinkles, and some from skin shedding and other anomalies. After this phenomenon, immediately aroused the attention of plant quality management personnel, technical personnel through specific analysis,[link widoczny dla zalogowanych], the reason to the following aspects: 1, printed materials, the problem itself, as printed paper, its own nature, ink performance, India Wen Wei unitary density, affect the quality of film. If you use poor evenness of paper printing. Within the format size of the ink absorption, the absorption speed of inconsistencies. Will cause the paper tightness, evenness, smoothness, the quantitative changes of water if too thick layer of ink printed on thick, adhesive molecules wetting, diffusion, permeability sent, the corresponding molecular motion asking each other very lively, mechanical bond In addition to a small force in the printing process in order to make printed version will not paste, often added in the ink dry oil. To make repeated rapid Results Xi ink, resulting in ink surface crystallization, surface light fine print, tough, loss of focus on Summer Day, adhesives, wetting their parents and can not. Seriously affect the fools Results fastness 2, process operation and the printing quality of the environment on the film coated product in the beginning of time. First layer of plastic film coated with adhesive. In spite of the drying,[link widoczny dla zalogowanych], the film still falls short of requirements. So when the sticky table to increase the concentration of solvent in order to dilute the quick-drying, but the moisture content is too high, when in the prone pressure coated with the air bubbles, and then from the skin and shedding. Meanwhile, the film easy to absorption of air in oil, water, dust and other substances, thereby reducing its surface features. Humidity, also affect the adhesive agent in Taiwan, the volatile solvent. Residual solvent too much air in the films produced in isolation, the film can not get accounted for. Meanwhile, Jane uneven pressure roller, roller itself is uneven,[link widoczny dla zalogowanych], there is dirt on the roller will cause wrinkling appears on the faults when the film how do Pai Chan? One bad situation appears adhesive mixture 1, revolves around the improper selection, rubber volume set properly. Ratio of the measurement error should be re-select the type and amount of adhesive agent platform. 2, the diluent containing alcohol and water consumption of NCO based,[link widoczny dla zalogowanych], so that the main agent does not react with the hydroxyl should use high-purity ethyl acetate. 3, the printed surface of the powder. Try to go gently with a dry cloth. 4, the printed ink layer thick. Should increase the amount of adhesive coating. Increasing pressure. 5 printed ink is dry or completely dry. Should again be on the hot glue; select solid content of the adhesive; increase in the thickness of adhesive coating station agent; increase in drying temperature, a 6 Road, Kwu printing ink and paper mixture is absorbed, so that judicial review was inadequate. Formulation and coating should be re-set the amount. 7, the plastic film surface is not enough or exceed the applicable period. Failure to deal with surface plastic film 8 should be replaced, the pressure is small, fast speed, the temperature is low. Should raise the film temperature and pressure. Appropriate to reduce the speed. Second, the phenomenon of blistering 1, the printing ink is not dry. Should again be on the hot glue; delayed film time to dry thoroughly. 2, the printing ink layer is too thick. Should increase the amount of adhesive coating station agent, increasing the pressure and temperature recovery units 3, drying temperature is too high, the surface crust mixture fools. Should lower the drying temperature. 4, the composite roll surface temperature is too high. Recovering roll temperature should be reduced. 5, the film has buckled or relaxation. Should be more uniform or curling film by film, adjust the tension of 6, the film surface dust and impurities should be promptly removed. 7,[link widoczny dla zalogowanych], Summer Day uneven mixture distribution flooded, with less. Should increase the amount of flooded cover and uniformity. 8 fools mixture concentration is too high, fools degree, coating uneven. Reduce the concentration of thinner adhesive application. Third, the film wrinkling 1, thin film balance transfer rollers should be adjusted to pass the stick. 2, the film ends of elastic waves crossing the border to be inconsistent or replace qualified film. 3, the layer is too thick, solvent evaporation is not complete, the degree of the Summer Day, squeezed by pressure rollers, paper and thin film produced on a backing with the move. Tu cavity volume should be adjusted to increase the drying temperature of 4 channel, electric rollers and rubber rollers at both ends of imbalance, the pressure is inconsistent, the line speed range. Two rolls should be adjusted
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