What are the advantages and disadvantages of BOPP synthetic label paper compared to PET synthetic label paper?

Compared with PET synthetic label paper, BOPP synthetic label paper has distinct advantages and disadvantages. The following is a detailed comparison of the two:

Advantages of BOPP synthetic label paper

Good mechanical properties: BOPP (biaxially oriented polypropylene) synthetic label paper has excellent mechanical properties, including impact strength, crease resistance, friction resistance, etc., which enables it to maintain good durability in various application scenarios.

High transparency: BOPP synthetic label paper has high transparency, which can clearly display the contents of the sticker and improve the appearance quality of the product.

Good moisture resistance: BOPP synthetic label paper has a certain degree of moisture resistance, which can prevent moisture from entering the packaging to a certain extent and extend the shelf life of the product.

Relatively cheap price: Compared with PET, BOPP synthetic label paper is usually more affordable and suitable for budget limited application scenarios.

Disadvantages of BOPP synthetic label paper

Poor heat sealing performance: The molecular orientation of BOPP film makes it difficult to seal when used independently, and it usually needs to be combined with other materials with good heat sealing performance to achieve the desired sealing effect.

Sensitive to temperature and humidity: In high temperature and high humidity environments, BOPP synthetic label paper is prone to deformation, shrinkage, discoloration, and other issues, which may affect the adhesion and readability of the label.

Printing performance is average: The surface of BOPP film is non-polar, with high crystallinity and low surface free energy, resulting in poor printing performance and relatively weak adhesion to ink and adhesives. Surface treatment is usually required before printing to improve its printing adaptability.

Poor oxygen resistance: BOPP synthetic label paper has poor oxygen resistance and may not be suitable for packaging products that require long-term storage or high oxygen resistance.

Advantages of PET synthetic label paper

Excellent high temperature resistance: PET (polyester) synthetic label paper has excellent high temperature resistance, up to 200 ℃, suitable for use in high temperature environments.

Strong durability and tensile strength: PET synthetic label paper has good durability and tensile strength, is not easy to tear, and is suitable for use in application scenarios that require a certain amount of tensile strength.

Good chemical corrosion resistance: PET synthetic label paper has good resistance to grease, dilute acid, dilute alkali, and most solvents, making it suitable for use in harsh environments.

Good transparency and glossiness: PET synthetic label paper has high transparency and glossiness, which can enhance the overall texture of the product.

Disadvantages of PET synthetic label paper

Higher price: Compared to BOPP, PET synthetic label paper is usually more expensive, which may increase production costs.

Strong rigidity: PET synthetic label paper has strong rigidity but relatively poor flexibility, which may not perform well in certain application scenarios that require bending or fitting surfaces.

In summary, BOPP synthetic label paper and PET synthetic label paper each have their own advantages. When making a choice, a balance should be made based on the specific requirements of the application scenario. For example, in application scenarios that require certain tensile strength, high temperature resistance, or chemical corrosion resistance, PET synthetic label paper may be more suitable; In application scenarios where budget is limited, moisture resistance or high transparency is required, BOPP synthetic label paper may have more advantages.