In today's global push for sustainable development, the rapid expansion of the coffee market has driven innovation and demand for related packaging materials. Among these, coffee cup trays-essential for carrying ready-to-drink coffee-are gaining attention for their materials, functionality, and environmental performance. Made through pulp molding technology, these trays are increasingly becoming a mainstream alternative to traditional plastic products due to their biodegradability and customizability.
Growing Market Demand
As urban lifestyles accelerate and coffee culture spreads worldwide, the number of chain coffee shops and convenience stores continues to rise. This growth significantly increases the need for takeaway coffee containers. Major brands like Starbucks and Luckin Coffee are expanding their store networks, which boosts not only coffee sales but also the consumption of accessories such as lids and trays. With growing consumer awareness of environmental issues, biodegradable pulp-molded trays are entering a broad market.
Paper Trays vs Plastic Trays: Environmental and Functional Advantages
Compared to common plastic or PLA bioplastic trays, pulp-molded trays offer several key advantages. Environmentally, they are made from renewable fibers such as wastepaper, cardboard scraps, or bagasse. They require no bleaching and break down completely in nature within 3–6 months. This meets regulations like the EU's Single-Use Plastics Directive (SUPD).
Functionally, the microporous structure of paper trays provides good heat retention and breathability. It slows heat loss and avoids condensation that affects taste. Through reinforced design and dry-press technology, these trays also offer compression resistance and leak prevention. They are well-suited for takeaway and logistics requirements.
| Characteristic | Yellow pulp coffee cup tray | Plastic coffee cup tray | PLA coffee cup tray cover | |
| Degradation cycle | 3-6 months (natural conditions) | 20-450 years | Industrial composting conditions | |
| Leak-proof | High (after process optimization) | high | Medium (easy to be brittle at low temperature) | |
| Breathability | Excellent (retain coffee aroma) | none | Low | |
| Raw material cost | Low (waste paper recycling) | Low (petroleum based) | High (corn starch) | |
| Customization flexibility | High (Easy to adjust the mold) | middle | Low (thermoplastic limit) |
Why Use Yellow Pulp?
Yellow pulp refers to unbleached, natural recycled paper pulp. It is often used in food-contact packaging due to its simple processing and natural color. Using yellow pulp for coffee cup trays cuts raw material costs by more than 30% compared to bioplastics. It also avoids plastic coatings, making the trays non-toxic, recyclable, and free from secondary pollution.
Moreover, yellow pulp is highly customizable and printable. Brands can apply surface treatments and print logos to communicate their eco-friendly values and enhance recognition.
Customization Drives Brand Differentiation
Another major advantage of pulp molding is its flexibility in customization. By adjusting mold designs, manufacturers can easily adapt to different cup shapes, opening sizes (for straws or sipping), and structural designs. Beyond common round and square trays, unique shapes and branded textures are also achievable. Various surface finishes like matte or gloss further expand visual options, helping brands stand out in a competitive market.
Challenges and Solutions in the Production Environment
Semi-automatic dual-station molding machines are commonly used in yellow pulp tray production. These machines handle key steps such as pulping, hot pressing, and demolding. However, the process involves challenges like high heat, humidity, and mechanical risks.
During hot pressing, mold temperatures often exceed 120°C. In summer, workshop temperatures can pass 35°C. Steam released from pulp dehydration keeps humidity levels above 70% for long periods. This accelerates equipment corrosion and affects electrical systems.
To improve working conditions and ensure safety and efficiency, several measures can be taken. Installing heat shields and dehumidifiers helps control temperature and keep humidity below 60%. Dividing the workshop into high-humidity and dry zones with one-way personnel flow reduces cross-contamination.
On the equipment side, safety photoelectric sensors and automatic power-off devices should be installed. Electrical cabinets with IP54 protection and high-temperature-resistant cables can prevent short circuits and shocks.
Regular maintenance is also essential. This includes daily mold cleaning and bearing lubrication, weekly sensor calibration and grounding checks, and full implementation of 5S methodology. Keeping the site clean and organized extends equipment life and maintains production accuracy.
AGICO's Role in Technological Innovation
As a leading manufacturer of pulp molding equipment, AGICO continues to improve the automation and performance of coffee tray machines. By developing stronger, water-resistant pulp materials, the company ensures trays perform reliably during logistics and storage. Equipment optimization also reduces energy use and mold wear, helping customers control overall costs.
These innovations enhance the market competitiveness of pulp-molded trays. They also provide solid support for global coffee brands adopting this sustainable packaging.
The shift in coffee cup tray materials reflects a deeper integration of consumer markets and green technology. Moving from plastic to pulp molding is not only a material change-it is a key step toward a circular and sustainable industry. Although production challenges remain, technological progress and scientific management will continue to advance this eco-friendly packaging solution. It will play a growing role in supporting a greener coffee economy.