The difference between BOPP and CPP

BOPP film material (biaxially oriented polypropylene film material) and CPP film material (uniaxially oriented polypropylene film material) are different processing forms of polypropylene plastics, and they have some differences in manufacturing process, physical properties, application fields, etc. . The following is the difference between the two summarized for you by Qingdao Prime Union.

1. Manufacturing process

BOPP film material: BOPP film material is made by making polypropylene particles into sheets and then using a biaxial stretching process at high temperatures. Biaxial stretching means that the film is stretched in both the longitudinal and transverse directions for better physical properties.

CPP film material: CPP film material is also made from polypropylene particles into sheets, but it is usually stretched in only one direction, usually longitudinally. This gives the film better properties in the longitudinal direction.

2. Physical properties

BOPP film material: BOPP film material has high transparency, tensile properties and tear resistance. It is a film material suitable for high transparency, high stretchability and tear resistance requirements.

CPP film material: CPP film material may be slightly inferior to BOPP in terms of transparency due to uniaxial stretching, but it has better longitudinal stretch performance and tear resistance.

3.Application fields

BOPP film material: BOPP film material is widely used in food packaging, printing, tape, label and other fields, especially in applications requiring high transparency and high tensile properties.

CPP film material: CPP film material is usually used for food packaging

4.Heat sealing performance

BOPP film material: BOPP film material generally has poor heat seal performance, and may need to add a heat seal coating during the manufacturing process.

CPP film material: Due to uniaxial stretching, CPP film material usually has better heat-sealing performance and does not require additional heat-sealing coating.

5. Film characteristics

BOPP film material: BOPP film material is usually thin, and the thickness may need to be increased in some special applications.

CPP film material: CPP film material is relatively thick and usually has better moisture barrier properties.

The PP materials of Borouge Chemical, Hanwha Total Petrochemical, and LyondellBasell, represented by Qingdao QINGDAO PRIME UNION, all include BOPP and CPP series. The material complies with food contact grade requirements, which is safe and environmentally friendly.

Qingdao Prime Union Trading Co., Ltd. was established in 2002. It is a professional agent of plastic raw materials. It is an agent of Chimei Industrial, Hanwha TotalEnergies, SABIC,Iyondellbasell, Kumho Petrochemical ,Borouge Chemicals and other brands. The products cover ABS/PC/PS/PMMA/AS/PP/PE/PPO/PEI and other raw materials; The brother company Qingdao Primetech Plastics, is a 16-year senior modification factory, which can provide one-stop service for plastic modification, dyeing, and injection molding process support. If you have any needs for plastic raw material pellets, please feel free to call us or leave a message/communicate online.