Wankai Functional PET Resins: Elevating Cosmetic Packaging with Clarity and Durability

PET Resin CPT-916: Crystal-Clear Look for Premium Cosmetic Packaging

CPT-916 is a high-transparency PET resin known for its exceptional clarity, making it ideal for high-end cosmetic packaging. With a intrinsic viscosity of 0.660 ±0.015 and an L-value of ≥65.0, it offers a light transmittance of ≥88%. 

These properties ensure outstanding transparency, allowing consumers to clearly view the product inside, enhancing the visual appeal of the packaging. Its low haze (≤2%) further improves clarity, making it particularly suitable for luxury cosmetic brands where premium aesthetics are essential. The resin’s transparency also helps improve brand image and increases consumer purchasing intent.

In terms of mechanical properties, CPT-916 is designed to withstand various environmental conditions. With a glass transition temperature (Tg) of 78°C and a heat deflection temperature of 65°C, it remains stable and resistant to deformation, even in fluctuating temperatures. This makes CPT-916 ideal for a wide range of cosmetic packaging applications.

Additionally, CPT-916 has low moisture content (≤0.2%) and low ash content (≤0.07%), which helps extend the shelf life of cosmetics by reducing degradation risks associated with moisture. Its impressive mechanical strength, including tensile strength (67.6 MPa), bending strength (89 MPa), and notched impact strength (2.8 kJ/m²), ensures that the packaging is durable and resistant to impact, making it ideal for complex packaging designs.

With a low shrinkage rate (≤0.3%) and a processing temperature range of 230-240°C, CPT-916 ensures precise dimensional control during molding and supports efficient large-scale production. This flexibility and excellent processing performance make it the perfect choice for luxury skincare and high-end perfume packaging.

PET Resin CPT-912: Thermal Stability and Durability for High End Packaging

CPT-912 is another high-transparency PET resin with an intrinsic viscosity of 0.760 ±0.020, an L-value of ≥62.0, and a light transmittance of ≥88%, which allows the product to showcase the true color of its contents. Its low haze (≤2%) further enhances the visual appeal of the packaging, contributing to a premium look and improving brand perception.

Thermally, CPT-912 offers excellent stability with a glass transition temperature (Tg) of 79°C and a melting peak temperature of 227°C, making it suitable for high-temperature processes such as hot filling. The resin’s tensile yield strength of 62.4 MPa and bending strength of 83.9 MPa ensure that the packaging remains durable during transport, preventing damage from external forces.

CPT-912 also demonstrates a low shrinkage rate (≤0.2%) and excellent processing performance with a recommended processing temperature range of 250-260°C. This allows for precise molding, high-quality production, and improved production efficiency.

In terms of impact resistance, CPT-912 has a notched impact strength of 3.9 kJ/m² and an elongation at break of 91%, providing excellent toughness and flexibility. This makes it suitable for a wide range of cosmetic packaging applications, ensuring durability under various conditions.

CPT-916 vs. CPT-912: Key Differences

CPT-916 is perfect for high-end cosmetic packaging due to its superior transparency, with light transmittance over 88% and a crystal-clear appearance. It also offers excellent tensile strength and bending resistance, making it ideal for intricate, rigid packaging designs. On the other hand, CPT-912 is designed for more versatile applications, with better thermal stability and impact resistance, making it ideal for packaging that needs to endure high temperatures and physical stress.

While CPT-916 excels in luxury packaging with a low shrinkage rate and broad processing range (230-240°C), CPT-912 is more suited for high-temperature processes, with a slightly higher Tg and processing temperature range (250-260°C). CPT-916 provides precise dimensional control for premium products, while CPT-912 is a reliable choice for standard packaging needs.

CPT-3906: High-Transparency PETG Resin for Superior Processability and Toughness

CPT-3906 is a high-transparency PETG resin, known for its superior processability and toughness compared to standard PET. Its unique chemical structure gives it excellent transparency (light transmittance of up to 90%), allowing the natural color of the product to shine through, which enhances its visual appeal. The PET resin has a color L-value ≥ 62.0 and a b-value ≤ -2.0, ensuring pure and consistent colors, while minimizing the effects of oxidation or heat-induced discoloration, reinforcing the premium image of the packaged product.

Thermally, CPT-3906 has a glass transition temperature (Tg) of 80°C and a heat deflection temperature of 68°C, providing good physical properties under higher temperature conditions. This makes it suitable for hot-fill applications and other high-temperature packaging processes.

CPT-3906 offers excellent mechanical performance with a tensile yield strength of 53.4 MPa and bending strength of 75 MPa. It also has a low moisture content (≤0.2%) and shrinkage rate, ensuring consistent performance during processing. The recommended processing temperature range of 230-250°C allows for efficient production while maintaining material consistency and high quality.

With an impact strength of 5.2 kJ/m² and an elongation at break of 59%, CPT-3906 provides excellent toughness and impact resistance, ensuring that the packaging remains intact during use and transportation. These properties make it a reliable choice for high-end cosmetic packaging that requires excellent performance under challenging conditions.

CPT-6922: High-Gloss White PET Resin for Integrated Packaging Design

CPT-6922 is a high-performance, bright white PET resin, perfect for cosmetic packaging. It offers exceptional color, thermal stability, and mechanical strength, enhancing the visual appeal of the packaging while ensuring durability under various conditions. With a IV greater than 0.700 dL/g, CPT-6922 provides excellent fluidity, making it ideal for complex packaging designs.

In terms of aesthetics, CPT-6922 has an L-value ≥ 83.0, ensuring a bright white color that enhances the visual attractiveness of the packaging. The b-value ≤ 4.0 ensures color consistency, preventing color discrepancies from changes in temperature or time, thus enhancing the overall visual appeal and brand image.

CPT-6922 is compatible with various thermoforming and injection molding processes, offering good mold release properties and ensuring excellent dimensional stability of molded products. Its recommended processing temperature range of 270-290°C provides flexibility and stability in production. Additionally, the resin has a diethylene glycol content of 1.0±0.2% wt, meeting environmental standards, and its low moisture content (≤0.4%) and low ash content (≤0.07%) ensure stability during processing, reducing impurities and improving product quality.

With a density of 1.38 g/cm³, CPT-6922 offers high compactness and structural strength, preventing damage during transport and use. It also demonstrates excellent resistance to water, oils, alcohol, and acids, ensuring that cosmetic products remain safely preserved, even under varying environmental conditions.

Conclusion

High-performance PET resins like CPT-916, CPT-912, CPT-3906, and CPT-6922 are ideal choices for cosmetic packaging, offering excellent transparency, mechanical strength, and thermal stability. Whether for high-end luxury packaging or more standard applications, these resins offer the necessary properties to meet the demands of the cosmetic industry. By choosing the right PET resin, brands can enhance their packaging, improve their products' shelf life, and provide consumers with a premium experience.