Market Insight: The Rising Demand for Premium Packaging in Vietna
Vietnam's beverage and food delivery industry is experiencing explosive growth. Consumers are no longer satisfied with standard packaging; there is a shift towards high-transparency, rigid, and heavy-duty containers-specifically "Ice Cups" that look like glass but offer the durability of plastic.
Our client, a forward-thinking plastic manufacturer in Vietnam, identified a gap in the local market: 2.1mm thick PET sheets. Most competitors could only produce thin sheets. To produce thick, glass-like sheets for premium ice cups, they needed a machine that could handle high throughput without compromising clarity.
.
The Technical Challenge: Thickness vs. Transparency
As PET sheet thickness increases, it becomes difficult to cool it rapidly inside the calender rolls, often leading to crystallization (whitening/haze) inside the sheet.
The client wanted to use a cost-effective formula: Virgin PET + Recycled PET Flakes. Mixing these two materials uniformly without creating "fisheyes" or black spots is challenging.
Thicker sheets easily trap moisture and air. If the vacuum system isn't powerful enough, the final ice cup will have visible bubbles, ruining the "premium" look.
The JWELL Solution: JWP 85/44 Parallel Twin Screw Extruder
To solve these issues, JWELL recommended the JWP 85/44 model. Unlike single-screw extruders that require pre-drying (which consumes massive energy), our Parallel Twin Screw technology offers superior advantages:
Key Equipment Highlights
Superior Mixing Logic
The parallel twin-screw design provides high torque and strong shearing force. It perfectly blends the recycled flakes with virgin granules, ensuring the IV (Intrinsic Viscosity) drop is minimized.
High-Vacuum Degassing
We equipped the Transparent PET sheets line with a multi-stage vacuum system. This effectively draws out moisture and volatiles from the melt, ensuring the 2.1mm sheet is 100% bubble-free.
Precision Calendering System
To achieve the "Ultra-Clear" effect, the three-roll calender unit uses a precise temperature control system. It ensures the thick sheet cools down evenly from the core to the surface, maintaining high transparency.
Project Execution: Efficiency in Action
For overseas clients, machine downtime means lost revenue
Machine positioning, mechanical connection, and electrical wiring were completed. The compact design of the JWP 85/44 saved valuable floor space in the client's factory.
Power on. We tested the 1.0mm, 1.5mm, and finally the challenging 2.1mm thickness. The output stabilized quickly at 800kg/h.
Process Training: Teaching operators how to adjust the gap of the calender rolls to change thickness quickly.
Maintenance: How to clean the vacuum system and change screen filters.
Safety: Standard Operating Procedures (SOP) for the high-speed winding unit.
Client Success & Feedback
The Transparent PET sheets line is now a key asset for the client. The 2.1mm Ultra-Clear Ice Cups have become their best-selling product this season.
Competitive Edge
They are now one of the few suppliers in Vietnam capable of offering >2.0mm ultra-clear sheets.
Cost Efficiency
By successfully incorporating recycled material, they have reduced raw material costs by approximately 15% without sacrificing visual quality.
Voice of the Customer
"We were worried that using recycled material would make the thick cups look yellow or cloudy. But JWELL's screw design is excellent. The cups are crystal clear, and the machine runs stably at 800kg/h. The JWELL team's training was also very practical for our new workers."
FAQ
Q: Can the JWP 85/44 extruder handle 100% recycled PET flakes?
A: Yes, JWELL's parallel twin-screw extruders are designed to handle high percentages of recycled material, including 100% bottle flakes, provided the flakes are clean and the drying/crystallization process (if needed) or high-vacuum venting is managed correctly.
Q: What is the lead time for shipping a PET sheet line?
A: Typically, manufacturing takes 60-90 days depending on customization.
Q: Does JWELL provide local support in Southeast Asia?
A: Yes, We have factories and offices in places like Thailand and Vietnam, and can provide prompt support and services.