Biaxially oriented polypropylene environment-friendly composite membrane

• Main Authors: HAN JINLI, MEI JINGYAN, YIN TINGFA
• Format: Patent
• Language: Chinese; English
• Published: 13.03.2013
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The utility model relates to a biaxially oriented polypropylene environment-friendly composite membrane, aims to mainly solve the problems in the prior art that the existing composite membrane is poor in environment friendliness and is high in cost. The biaxially oriented polypropylene environment-friendly composite membrane is characterized in that a core layer (2) serves as a central layer; an upper surface layer (1) and a lower surface layer (3) are respectively adhered on the two surfaces of the core layer (2); the upper surface layer (1) which is used for forming a base membrane is made from 100% composite functional parent stock; the core layer (2) is made from homo-polypropylene resin; and the lower surface layer (3) is made form homo-polypropylene resin and an anti-adhesion agent. The biaxially oriented polypropylene environment-friendly composite membrane omits the applications of toluene, dimethylbenzene and other toxic solvents in pre-coating-type and instant-coating-type composite processes, obvio