The development of adhesives for packaging is constrained by strict environmental regulations, human health awareness and production safety requirements. The key to environmentally friendly blister packaging technology is the development of adhesives. In order to reduce the environmental pollution of the product, the adhesive for blister packaging is developed in two directions:
1. Does not contain organic solvents
Such as: Germany, Manser, Alois et al. 1990 introduced ultra-fast UV curing adhesive (curing time 0.2-0.5s) made of acrylic prepolymer, photo sensitizers and photosensitizers for blister packaging. The binder does not contain organic solvents.
2. Water base, cold seal, energy saving
Take the Dutch company Ecobliss as a typical representative.
In 1996, Ecobliss of the Netherlands introduced a new cold-sealed blister package to the market. This technology not only combines the strength of the traditional blister packaging technology, but also makes the packaging simpler and easier. It is clean, fast, and energy-saving. Friendly. The cold seal adhesive used replaces the heat seal adhesive. Can be used for packaging of medicine, electronics, food, cosmetics, agricultural products, auto parts, etc. This special ECO-screen UV max adhesive is a cold glue system, which does not require heating when bonding, and can achieve very good adhesive fastness directly and instantaneously, which can greatly reduce the power consumption during production, but also It can reduce processing time and greatly increase production efficiency. Ecobliss binders can be used very thin and special additives such as specific mechanical and chemical stabilizers are added to protect Ecobliss blister packs from aging due to UV or other environmental factors. The binder is yellow and transparent, and water is used as a solvent. There will not be a large amount of organic solvents released into the atmosphere, which meets the requirements of environmental protection.
Environmental adhesives, due to the absence of organic solvent evaporation of the environmental pollution, eliminating the huge equipment drying, heating, blowing, exhaust emissions devices, reducing energy consumption, application prospects in the packaging field is good.
Source: China Adhesive Network
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