Specializes in production of different kinds sealingfilm automatic packing films and packing material.
专业生产各种封口膜，自动包装膜，包装材料等。
2
It is characterized by that it is formed from 5 layers of plastic pipe, adhesive layer, steel pipe, alloy layer and hole-sealingfilm in turn fron inside to outside.
其特征在于该合金钢塑复合管由5层组成，从里到外依次是塑料管、粘结剂层、钢圆管、合金层、封孔膜。
3
The results indicated that the sealing parameters changed remarkably near the opening critical film thickness in the start up process.