How is PET used in round lip gloss tubes?

In the cosmetic packaging industry, round lip gloss tubes have always held a mainstream market position due to their classic design and excellent feel. Among the various production materials, the application of PET (polyethylene terephthalate) and its improved versions (such as PETG) has brought a qualitative leap in the quality improvement of round lip gloss tubes.

I. Superior Transparency: Creating a Crystal-Like Visual Effect

For round lip gloss tubes, the transparency of the tube directly determines the product's "appearance." PET material has a refractive index comparable to glass:

• Visual Presentation: PET material can perfectly present the color and texture of lip glosses and lip stains, especially those with pearlescent or fine shimmer.
  
  
• Wall Thickness Design: In the production of round lip gloss tubes, by thickening the injection molding process at the bottom, PET can create a sense of transparent stability, enhancing the brand's premium feel.
  
  

II. Excellent Chemical Compatibility: Protecting the Activity of the Ingredients

Lip gloss ingredients typically contain complex plant oils, mineral oils, and fragrance components. Round lip gloss tubes are prone to cracking or deterioration if the material is not chosen properly.

• Chemical Resistance: PET/PETG has extremely strong chemical resistance, effectively blocking oxygen and moisture, ensuring that the lip gloss or lip balm inside the tube does not oxidize within its shelf life.
  
  
• Physical Stability: Compared to AS material, PET is more stable when exposed to high concentrations of oils, greatly reducing the risk of stress cracking in round lip gloss tubes.
  

III. Environmental Protection and Sustainable Development

In line with ESG trends, the sustainability of materials used in round lip gloss tubes has become a focus for overseas customers in the global trend of plastic reduction and environmental protection.

• Recyclability: PET is globally recognized as one of the most easily recyclable plastics (code 1).
  
  
• PCR Application: Current production processes support the addition of 30%-100% PCR-PET (recycled plastic) to round lip gloss tubes. This not only reduces the carbon footprint but also helps beauty brands enter the high-end environmentally friendly market.
  
  

IV. Surface Treatment and Customized Processes

The cylindrical structure of the round lip gloss tube provides a perfect canvas for post-processing. Based on PET material, manufacturers can achieve a variety of exquisite processes:

• Screen Printing: Continuous printing at 360° on the smooth circumference surface.
  
  
• Heat Transfer and Hot Stamping: The temperature resistance of PET material allows it to withstand the pressure of hot stamping, giving the logo a more metallic texture.
  
  
• Frosted Finish: Sandblasting gives the round lip gloss tube a low-key, luxurious matte finish.
  
  

PET material, with its high transparency, strong compatibility, and environmentally friendly properties, has become the preferred material for high-end round lip gloss tubes. As a packaging supplier with many years of experience in the industry, we are committed to providing you with more durable and beautiful lip makeup containers through advanced injection molding technology.