Peel strength aluminum plating film composite products poor phenomenon

peel strength is poorer, aluminum plating film composite products phenomenon with OPP/VMCPP and OPP/VMPET multiple, for example, jiangsu zhangjiagang a color had met such a strange question; With zhejiang new Oriental ink group co. , LTD. , the production of 108 type ink printing OPP with VMCPP composite, using jiangsu one adhesive glue factory production, results of composite products, after a little curing, its strength is good, but instead of peel strength decreased after curing, unable to meet the standard requirements. Specific performance in aluminized layer no & other; The migration & throughout; , printing ink, also not be left behind. Produce this kind of phenomenon, doubt is the cause of the ink. Then use zhejiang new Oriental ink group co. , LTD. , the production of PU - 2975 type of polyurethane adhesive and peel strength after aging obviously than the glue of a adhesive factory in jiangsu is much higher. Produce this kind of phenomenon, is not a poor quality of the glue adhesive factory in jiangsu province, and lies mainly in the production of adhesive is aluminized film with adhesive, especially for OPP/VMCPP, bonding effect is poorer. And PU - 2975 type adhesive for aluminum plating film has excellent adhesion effect, moderate molecular weight and uniform, solvent release sex is better also, at the same time for ordinary material composite also can reflect the strong bonding effect.

the place on put together is narrated, in actual production, to solve the peel strength difference phenomenon is various, first of all to ensure the quality of composite base material chosen, to guarantee the quality of dilution solvent, another is to choose a suitable adhesive. Second production process conditions, such as drying temperature and air flow temperature and pressure, tension control, composite roller and so on factors, is also must pay attention and pay attention to.