Automatic Cup Sealer Machines
Automatic cup sealing machines first rose to fame in Taiwan’s bubble tea shops, but their appeal has quickly spread worldwide and across industries.
Today, you’ll find them in everything from juice bars and coffee shops to protein shake counters and small-scale manufacturing setups.
Businesses of all sizes are using automatic sealers to boost efficiency, reduce spills, and deliver a polished, professional product. Whether you’re crafting boba drinks or scaling up your beverage production, these machines offer speed, cleanliness, and consistency with every seal.
Why Use a Cup Sealing Machine?
You know those perfectly sealed bubble tea cups all over TikTok and Instagram? That’s the work of a cup sealing machine. Just place your cup in the machine, and it seals it airtight—no leaks, no mess.
From smoothie shops in Brooklyn to tea stands in Bangkok, businesses are upgrading to automatic sealers because they’re faster, cleaner, and better suited for today’s demand for delivery and takeout. Sealed cups aren’t just more convenient—they’re a necessity.
And let’s not forget the branding potential: sealing film can be custom-printed with your logo or used clear for a sleek look.
How Does an Automatic Cup Sealer Work?
Automatic sealers use a heated plate to bond a film over the cup, creating an airtight seal. But to get that flawless seal, your cup and film need to be compatible—PP cups go with PP film, PET cups with PET film. (Not sure what you need? We can help – Contact Us Here!)
Higher-end models use infrared sensors to detect the cup and automatically start the sealing process. Budget models often rely on manual operation and cheap parts that wear out quickly.
Standard features include:
- Owner’s manual
- 110v plug
- Cup holder tray
- Film roll holder
- Heating plate
- Infrared cup detection sensor
- Digital control panel
Step-by-Step Sealing Process:
- Insert the cup into the tray
- The sensor detects the cup and activates the mechanism
- Heat and pressure are applied to seal the film
- Cup is sealed and ready in seconds
Types of Cup Sealing Machines
Manual Sealing Machines
These require the user to manually press down a lever to seal each cup. They’re inexpensive, but often unreliable and lacking support.
Fully Automatic Sealing Machines
Drop the cup in and the machine does the rest—detects, seals, and ejects. Ideal for busy locations needing speed and consistency.
Choosing the Right Sealing Machine
Cup Size Compatibility
Not all machines fit every cup. The diameter of your cup must match the machine’s mold exactly—most common sizes include 90mm, 95mm, 98mm, and 100mm.
Cup & Film Material Match
Match materials for a proper seal:
• PP cups → PP film
• PET cups → PET film
Certifications Matter
Look for machines with the following certifications:
- CE – Complies with EU safety and environmental standards
- CUL – Meets Canadian and U.S. electrical safety standards
- UL EPH – Approved for commercial food environments under NSF/ANSI
Production Speed
Some machines can seal 500+ cups per hour. If your shop gets busy, speed is crucial. Many businesses use two machines—one for backup and double the output.
Temperature Control
Accurate temperature settings mean fewer failed seals. Each cup and film type has optimal sealing temperatures.
Key Benefits of Automatic Sealing Machines
Speed and Efficiency
Staff can focus on making drinks while the machine handles the sealing.
Hygiene and Safety
No hands on the cup rim—greatly reducing contamination risks.
Professional Look
Sealed cups look sleek and are easy to brand.
Cost Savings
Less waste, faster service, and reduced labor add up to real savings over time.
Popular Applications
- Bubble Tea Shops – Essential for the authentic boba experience
- Juice & Smoothie Bars – Keep drinks fresh and leak-free
- Protein Shake Stations – Perfect for gyms and nutrition counters
- Coffee Shops – Works for hot drinks too (with the right materials)
- Alcohol To-Go – Seal cocktails for cities with open container restrictions
- Food Courts & Kiosks – Fast and clean service where speed matters
Maintenance & Troubleshooting
Daily Maintenance Checklist:
• Wipe down surfaces
• Align film properly
• Empty cup residue trays
• Sanitize cup holders
Common Issues:
• Cup not sealing: Check heat plate temperature
• Wrinkled film: Could be alignment or overheating
• Machine won’t start: Clean the sensor
Sustainability Tips
Use Eco-Friendly Films
PLA-based films are biodegradable and popular with eco-conscious brands.
Reduce Plastic Waste
Fewer plastic lids and spills means less waste overall—plus more control over your packaging.
Final Thoughts
Automatic cup sealers are essential tools for fast, modern beverage businesses. Whether you’re sealing boba tea, protein shakes, or cocktails, a good sealer boosts efficiency, hygiene, and presentation. Choose the right machine, care for it well, and it’ll pay for itself many times over.