In the forming process of composite paper, the use of blister paper has many requirements.
First, the selection of paper is crucial. If you want to produce qualified paper blister packaging, choosing the right paper is more than half the success. Paper with loose structure and low interlayer bonding force is more suitable for blister. For example, some specific white paper, its fiber structure can better adapt to the blister process. Moreover, for the same quantitative paper, the thicker the thickness, the more conducive to blister, such as thicker paper can make the blister and paper more closely combined. In addition, the thinner the coating on the surface of the paper, the better, and white paper with fewer coatings is often better in blister performance.
Secondly, choose the appropriate blister oil according to the material of the blister cover. Blister covers of different materials, such as PET and PVC, have different performance requirements for blister oil. Suitable blister oil can ensure a good combination of blister and paper and improve the blister effect.
In addition, the process parameters should be reasonably determined. The ratio and flow rate of blister oil, the pressure between the metering rollers of the oiling machine, the pressure of the pressure roller, the oiling speed and the storage time after oiling will all affect the quality of blister packaging. These parameters need to be strictly controlled during the production process, and each control parameter must be inspected and confirmed before production.
Finally, in actual use, a simple test can be performed to check whether the paper is suitable for blister packaging. For example, blister oil is applied on unprinted white paper, and then a blister test is performed. If the white paper test is qualified, the blister performance after printing will generally not be a problem. Mastering these tips will help to better use blister paper in the composite paper forming process.