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Does the sealing performance of CPLA cup lids surpass that of traditional materials?

2026-03-20 0 Leave me a message

In today's global wave of environmental protection, consumers have increasingly stringent requirements for disposable catering products, demanding both environmental friendliness and a superior user experience, especially in terms of sealing performance. CPLA cup lids, with their outstanding sealing performance, have become a strong competitor to traditional materials, offering the catering industry a brand-new option.


CPLA, or crystalline polylactic acid, is a "reinforced" version of ordinary PLA material after crystallization. This process makes the molecular arrangement more regular, greatly improving the material's stability and physical properties. CPLA cup lids have a significant advantage in sealing performance. Their high crystallinity gives the material excellent strength and toughness, allowing the lid edge to fit tightly against the cup rim, forming a stable seal that effectively prevents liquid leakage. Whether holding hot coffee, milk tea, or other hot beverages, or iced drinks, CPLA cup lids can firmly lock in the liquid during vigorous shaking or prolonged carrying, preventing embarrassing spills.


Compared to traditional plastic cup lids, CPLA cup lids offer superior sealing performance. Traditional plastic cup lids are prone to deformation at high temperatures, leading to a decrease in sealing performance. CPLA cup lids, however, are heat-resistant up to 100℃ and maintain their shape and sealing performance even after prolonged contact with hot liquids. Furthermore, the material properties of CPLA cup lids make them more suitable for cups of different diameters, ensuring a uniform and reliable seal.

In addition to their excellent sealing performance, CPLA cup lids also offer environmental advantages. They can completely degrade into water and carbon dioxide within 180 days under industrial composting conditions. After disposal, they can be composted together with the coated paper cups, reducing environmental pollution. Moreover, CPLA cup lids have passed multiple food contact safety certifications, such as FDA and GB4806.7, ensuring safe and reliable use.


Lingtan Biotechnology (Tianjin) Co., Ltd., as a professional CPLA cup cap manufacturer, is committed to the research and application of biodegradable materials. The company possesses advanced production equipment and technology, strictly controls product quality, and produces CPLA cup caps with excellent sealing performance, environmental safety, and high market recognition. If you are looking for high-quality CPLA cup caps, please feel free to contact and purchase Lingtan Biotechnology's products. Let's work together to contribute to environmental protection!


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