Drug soft packing four requirements for adhesives

Pharmaceutical flexible packaging four requirements for adhesive 1, good safety and health performance should be odorless non-toxic, if the drug directly contact adhesive, also respond to the drug packaging no corrosive. Protection by drug packaging materials or packaging products are direct entrance, not only the base material to non-toxic, tasteless, odourless, the adhesive used to also want to have the same performance, so in the production of adhesive raw materials, auxiliary materials, solvents should have safety and health. 2, good bonding performance due to the material of packaging materials, USES the adhesive glue them up, adhesive must be the material of different materials with excellent stick relay. Used in pharmaceutical packaging composite substrate variety, different performance, such as aluminum foil, plastic, fabric, paper, and a variety of brands, plastic and their molecular structure on the surface properties of each are not identical, in the face of so many and complex material, adhesive must have to stick at the same time the performance of two or more different materials. 3, good heat resistance, some drug packaging materials in the process of packaging process to withstand high temperatures, such as aluminum foil blister packaging drugs, under the condition of 150 ℃ ~ 220 ℃ high temperature to the aluminum foil and PVC thermal sealing; Some packaging cooking food need high-temperature cooking along with packaging sterilization, which requires the adhesive has withstood the test of high temperature. Excellent chemical resistance, medium resistance. Chemical drug itself is very complex, packaging and then subjected to heat treatment, and long-term storage, keep perfect of packaging materials, in addition to the base material itself should have excellent chemical resistance, medium erosion resistance, the stability of the adhesive is very important also, need to be able to resist all kinds of medium and the chemical composition of erosion, otherwise it will cause complex layered dissection and lose function. 4, soft performance to use flexible packaging composite packaging drugs, soft packing, convenient is very important, should be able to fold, adhesive also should have this kind of performance. If the glue mucosal hard, brittle, not folded, lost the use of flexible packaging with base material does not match the performance.