The main trend of sustainable development of flexible packaging is still to follow the 3R principle in the production of plastic film, namely: reduce, recycle and reuse. Among them, the reduction refers to the scientific reduction of the overall thickness and the number of layers of the packaging, which needs to improve the performance of the film and equipment at the same time.

In order to make flexible packaging recyclable, it should avoid composite films of different materials, such as traditional, PET/AL/PE, the three materials together can meet the packaging requirements of most products, of which PET is responsible for printing and coloring, AL is responsible for barrier property, PE is responsible for heat sealing, the three materials have their own advantages, so after combining them, the performance is more excellent. That's the way flexible packaging has always been. But after all, it is always plastic, and there is basically no reuse value after the combination of multi-layer material packaging, so the vast majority of packaging bags go to landfill or incinerator, and can not be recycled after use is a fatal shortcoming, why can not different structures be recycled? Multi-layer material is 2-4 layers of material composite, composite of these different materials is difficult to separate, this is like water and pigment mixed, only the water and pigment separated out, but the process cost is also quite high.

Compared with traditional packaging, a single material does not need to be stripped of different plastics during recycling, greatly reducing the complexity of the process and conducive to recycling.

  In the packaging production of a single material, the main challenge is to maintain some functional requirements, such as optical properties, barrier properties, mechanical properties, sealing, etc., and the emergence of MDOPE further solves these problems.

MDOPE film refers to unidirectional tensile PE film, this PE film has good rigidity, transparency, puncture resistance and heat resistance, the flatness is greatly improved, the appearance is quite close to BOPET, it can be considered that there is no printing problem, basically can achieve overprinting accuracy, the inner PE low temperature heat sealing, so that the bag can maintain a beautiful condition of heat sealing firm。

Now MDOPE/PE environmental protection structure in the PVA coated barrier film and EVOH barrier layer more applications, such as the total thickness of the composite film is 100um, then the EVOH addition amount is about 5um, such a structure, after detection, its oxygen permeability can reach 8cc below.，for some dry food, daily chemical products, water resistance, oxygen resistance is basically comparable to the traditional multi-material packaging.

MDOPE/PE can be used to complete three-side sealing, stand up pouch, Flat bottom pouch and other bag types