What is the tensile strength of BOPP thermal sensitive synthetic paper?

The tensile strength of BOPP thermal synthetic paper is relatively high, mainly due to the substrate properties of its biaxially oriented polypropylene (BOPP). The following is a detailed analysis of the tensile strength of BOPP thermal sensitive synthetic paper:

1、 Material characteristics

BOPP film, as the substrate of BOPP thermal sensitive synthetic paper, has the characteristic of high tensile strength. During the biaxial stretching process, the polypropylene molecular chains are highly oriented along the stretching direction, thereby improving the tensile strength. Therefore, BOPP thermosensitive synthetic paper has high tensile strength in both longitudinal and transverse directions.

2、 Performance parameters

Normally, the tensile strength indicators of BOPP thermal sensitive synthetic paper include longitudinal tensile strength (MD) and transverse tensile strength (TD). Specifically:

Longitudinal tensile strength (MD): Due to the stronger stretching treatment of BOPP film in the longitudinal direction, the molecular chains are highly oriented along this direction, so the longitudinal tensile strength is usually higher. According to relevant information, the longitudinal tensile strength (MD MPa) of BOPP film is generally not less than 120, and some high-quality products may even be higher.

Transverse tensile strength (TD): Although the transverse tensile strength is slightly lower than the longitudinal strength, it still has a high value. Usually, the transverse tensile strength (TD MPa) of BOPP film is not less than 220.

3、 Influencing factors

The tensile strength of BOPP thermal sensitive synthetic paper is influenced by various factors, including but not limited to the following:

Production process: Stretching process is one of the most important factors determining the performance of synthetic paper. The longitudinal stretching temperature, longitudinal stretching ratio, transverse stretching temperature, and transverse stretching heat setting temperature all directly affect the mechanical and optical properties of synthetic paper products.

Raw material quality: The quality of polypropylene particles directly affects the performance of BOPP film, which in turn affects the tensile strength of BOPP thermosensitive synthetic paper.

Additives: additives such as pore forming agent, antistatic agent and anti-aging agent added in the production process will also affect the tensile strength of BOPP thermosensitive synthetic paper.

4、 Application scenarios

Due to its high tensile strength, BOPP thermosensitive synthetic paper is suitable for various occasions that require physical damage. For example, in the fields of packaging, labeling, bills, etc., BOPP thermosensitive synthetic paper can withstand physical operations such as tearing and folding without being easily damaged. In addition, in anti-counterfeiting applications, the high tensile strength of BOPP thermosensitive synthetic paper also increases the difficulty of counterfeiting and improves the safety of the product.

In summary, BOPP thermosensitive synthetic paper has high tensile strength, which is attributed to the substrate characteristics of its biaxially oriented polypropylene and optimized production process. In specific applications, BOPP thermosensitive synthetic paper can withstand various physical damages and exhibit excellent mechanical properties.