In-Depth Analysis: How the Water Bottle Industry Approaches Biodegradable Materials? — Coffee Ground Composites Edition

"There's a story in every cup, warmth in every life. Hello everyone, welcome to "Dong Dong's Cup Talk"!" With the rise of environmental awareness in the global consumer market, over 60 countries, including China, have set higher standards for carbon emissions and carbon neutrality. As a result, the daily necessities market has significantly increased its use of biodegradable materials, and the water bottle industry is no exception.

Between 2024 and 2025, dozens of brand owners, buyers, and industry engineers visited our factory to discuss issues related to biodegradable materials. Through research and analysis with DeepSeek, we’ve compiled the following insights. http://www.zhanyict.com/en/ProductsDetail-VB-10467.htmlThese insights cover key considerations when using corn fiber, rice husk fiber, and coffee ground composites in water bottle production. What adjustments are needed for injection molding equipment and molds? Why is PP (polypropylene) added during production? Are there alternative materials? Due to the extensive content, we’ll break it down into separate articles for each material, hoping to assist those seeking knowledge in this field.

Coffee Ground Composites

Oil Residue:

Coffee grounds must undergo degreasing (via solvent extraction or high-temperature roasting). http://www.zhanyict.com/en/ProductsDetail-VB-10467.htmlOil residue exceeding 1% can cause screw slippage during injection molding.

Color Difference Control:

Natural pigments in coffee grounds are prone to oxidation and discoloration under heat. Antioxidants (e.g., BHT) must be added, http://www.zhanyict.com/en/ProductsDetail-VB-10467.htmland melt retention time should be kept under 5 minutes.

Odor Management:

High temperatures release coffee aromas, which may affect food contact safety. http://www.zhanyict.com/en/ProductsDetail-VB-10467.htmlCertification under FDA 21 CFR 177.1520 is required.