How to distinguish between OPP film and BOPP Film?

The production of BOPP film is to make the melt of high-molecular polypropylene into a sheet or thick film through a long and narrow head, and then in a dedicated stretching machine at a certain temperature and set speed, simultaneously or in steps. A film made by stretching in two vertical directions (longitudinal and horizontal) and subject to appropriate cooling or heat treatment or special processing (such as corona, coating, etc.). BOPP film is a very important flexible packaging material. BOPP Film PE Core is colorless, odorless, odorless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency.
                                                                                      
                                                                                                                                     BOPP Film PE Core

As a BOPP PE Core Wholesaler, share with you how to distinguish OPP film from BOPP film

The surface energy of BOPP film is low. Corona treatment is required before gluing or printing. After corona treatment, BOPP film has good printing adaptability, and can be printed in color to get exquisite appearance effect, so it is often used as the surface layer material of composite film.

1.OPP, unidirectionally stretched polypropylene film. OPP stretches the cast polypropylene film in the transverse direction, which can be printed and compounded. Generally, there are two types of material structures: transparent and non-transparent, transparent is mainly OPP / CPP, and non-transparent is OPP / VMCPP. Due to the poor heat-sealability of OPP, most are sealed with ultrasonic.

2. BOPP, biaxially oriented polypropylene film. BOPP stretches the cast polypropylene film in the transverse and longitudinal directions. It has high tensile strength, impact strength, rigidity, toughness and good transparency.

3. BOPP film is made of polypropylene particles after co-extrusion to form a sheet, and then stretched in both directions, both longitudinally and vertically. Due to the stretch orientation, this film has good physical stability, mechanical strength, air tightness, high transparency and gloss, toughness and abrasion resistance. It is currently the most widely used printing film, and generally uses a thickness of 20 to 40 μm. The most widely used is 20 μm. BOPP is generally used as the outer film of composite film, such as moisture resistance, transparency, strength, stiffness and printability after compounding with polyethylene film. It is ideal for dry food. Because the surface of BOPP is non-polar, with high crystallinity and low surface free energy, its printing performance is poor, and its adhesion to inks and adhesives is poor. Surface treatment is required before printing and compounding.

4. BOPP film is suitable for various packaging, printing, laminating, aluminizing, etc., such as cigarette packaging film, widely used in food, medicine, daily light industry, clothing, cigarettes and other packaging materials, and is widely used as composite film The substrate is not only replacing traditional paper packaging in many occasions, but also has replaced ordinary packaging films such as PE, PP, PVC in many packaging fields.

5. OPP film is mainly used for packaging bags and forming composite materials with other materials. Single-film OPP is mostly used for packaging lightweight products such as disposable paper cups.

Our company also has BOPA PE Core on sale, welcome to consult.