Biaxially oriented polypropylene film (BOPP) has the advantages of light weight, transparency, non toxicity, moisture resistance, and water resistance. It has good thermal stability, chemical
This article mainly introduces the forming process of rigid polyurethane foam composite plate. Rigid polyurethane foam composite plate takes foam as the core material and
After the raw materials are determined, as long as the processing temperature, die gap, film cooling, inflation ratio, traction ratio and other parameters are controlled
The plastic films used in composite materials are arranged in order of their dosage, including polyethylene, polypropylene, glass paper, polyester, nylon, co extruded film, ethylene
(1) Extrude PP into the extruder, and after a certain temperature and time, under the action of the rotating shear force of the screw, the
Grass wrapping film has strong self-adhesive properties, weather resistance, puncture resistance, and impact resistance. Compared with traditional methods, using it for grass ensiling preservation has
In the production and application of CPP, there are two main problems: first, the stretching speed is small, and increasing the stretching speed is easy
Shrinkage film packaging was first applied in France in 1936 and began to be widely used in the 1960s. The most common production methods for
