At present, there are two main methods for the production of PVB interlayer film, one is the over-roll method and the other is the water-pass method. The over-roll method is to produce a film by casting two rolls or three rolls (with a light roll and a pattern roll). The over-roll method has low investment, the technology is relatively mature, and the equipment is relatively easy to operate. The water-passing method is a process that is generally believed to produce a film with better whiteness and a more uniform pattern. It uses a water tank to cool the characterization instead of a roller, and then removes water, thickness, oven, cooling, separator composite, and traction. Finally, the volume is collected. Because the over-water method has more advantages than the over-roll method, it is used by more and more manufacturers. The following points in the production process of the water-passing method require special attention:
he oven is heated and cooled. In order to increase production and ensure high-speed production of the production line, our company has unique insights and designs in the oven, heating and cooling sections. The oven plays the role of removing the excess moisture of the film, and more importantly, it removes the internal stress. The internal stress in the film can be completely removed, which can effectively prevent the film from shrinking during the high temperature bonding with the glass. The amount of control is better.
1、适应众多物料体系的不同类型加工1、适应众多物料体系的不同类型加工
2、从上料到收卷,全套集成,可以做交钥匙工程
3、产量大、耗能低,自动化程度高。
目前,PVB中间膜的生产工艺主要有两种方式,一种是过辊法,一种是过水法。过辊法是采用两只辊或三只辊(有光辊,有花纹辊)流延的方式生产出胶片。过辊法投资低,技术相对成熟,设备也相对容易操作。过水法是普遍认为生产的胶片白度较好、花纹较均匀的一种工艺,它是采用水箱冷却定性而非辊筒,然后经过除水,测厚,烘箱,冷却,隔离膜复合、牵引,后收卷。因为过水法产品优点多于过辊法,被越来越多的厂家所采用。
青岛欧瑞泰科塑料机械有限公司始建于1991年,总占地面积15万平方米。主要产品:塑料机械,双向拉伸生产线,电池隔膜生产线,石头纸生产线,同步拉伸机,BOPP线,BOPET线,流延膜生产线,PVB生产线,CPP流延线,eva生产线,tpu生产线,pvdf生产线,压延片材生产线,PET片材线,PVC片材线等。产品含盖机械、化工、电子、塑料、纺职、钢铁等领域。