Keep Your Forming Lines Running With Stable PE-Coated Paper
Replace shipment-to-shipment uncertainty with PE-coated paper engineered around your actual cup, bowl, and tub forming conditions. We control the parameters that influence heat sealing, curl, leakage resistance, and continuous high-speed converting yield.
- 1S / 2S
- PE coating configuration
- 12-24gsm
- Typical PE layer range
- 20,000T
- Annual coating capacity
- 4
- Extrusion-coating lines
Your Production Reality
Stable material performance at line speed-not only on a lab sheet.
Control Focus
Seal, adhesion & curl
Validation Focus
Leakage & forming yield
Customer Pain Points
A Roll That Looks Right Can Still Stop Your Line
For converters without their own extrusion-coating line, raw material variation becomes a direct production risk. Small shifts in coating, moisture, or roll behavior can multiply into scrap, downtime, and customer complaints.
Unstable Heat-Seal Window
PE weight and surface condition can affect sealing temperature, dwell time, and seam strength-causing weak side seams, bottom leakage, or material burn at normal machine settings.
Curl & Shape Instability
Imbalanced moisture, paper structure, or coating behavior can create curl, poor blank feeding, uneven rims, and difficult forming-especially during long production runs.
Coating Adhesion Failure
Poor extrusion adhesion may appear as PE lifting, flaking, or separation during creasing, forming, filling, and transport-putting product integrity at risk.
Inconsistent Roll Tension
Uneven winding or unstable roll hardness can lead to web tracking issues, telescoping, wrinkles, variable feeding, and interruptions at high converting speeds.
Leakage Risk After Filling
A cup may pass visual inspection yet fail when exposed to hot drinks, soups, oils, or holding time. Leakage risk must be assessed on the finished container, not assumed.
Sample-to-Mass Variation
A small sample can perform well while later production behaves differently. Without retained references and locked controls, repeatability becomes difficult to verify.
Material Control Capabilities
Control the Parameters That Reach Your Forming Machine
PetiPaper supplies single- and double-side PE-coated paper as a production material for overseas converters. We align key material parameters to the application, machine process, and approved reference sample.
PE Coating Weight
Define the single- or double-side PE configuration and target coating weight required for the intended forming, sealing, moisture barrier, and end-use conditions.
Heat-Seal Performance
Review your machine temperature range, pressure, dwell time, cup design, and filling conditions to establish a workable heat-seal window for trials.
Coating Adhesion
Control extrusion bonding and surface quality to support creasing, blank conversion, forming stress, and dependable performance in the finished package.
Moisture & Flatness
Manage moisture-related behavior to help reduce curl, feeding variation, and dimensional instability during die-cutting, printing, and cup forming.
Roll Tension & Winding
Confirm roll width, core size, outer diameter, winding direction, roll condition, and packing standards for stable unwinding and transport protection.
Batch Traceability
Use agreed batch identification, inspection records, and retained reference samples to compare any concern against the approved production baseline.
Production-Representative Sample Trials
Test on the Machine That Has to Deliver
Before a trial order, send your current material details and operating conditions. We prepare a production-representative sample for your team to test under real converting conditions-not only visual inspection.
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1
Share Your Current Material & Machine Conditions
Provide paper GSM, PE weight, coating side, roll dimensions, current issues, forming speed, sealing settings, finished product type, and destination requirements where available.
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2
Confirm Technical Feasibility & Sample Scope
We review the requested construction, identify open technical points, and agree on a sample configuration that represents the intended production material.
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3
Run Real Converting & Filling Tests
Test at your normal settings and production speed. Record the conditions, results, defects, and adjustments needed for heat sealing, curl, leakage, and overall yield.
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4
Use Trial Feedback to Finalize the Specification
Trial results are used to refine the practical parameters before a commercial trial order. This reduces avoidable mismatch between sample behavior and mass-production expectations.
Final Specification Lock-In
Turn a Successful Trial Into a Repeatable Supply Standard
Once your machine trial is approved, we formalize the material and delivery criteria so future orders have a defined reference-not a moving target.
Specification Lock-In Can Cover
- •Base paper grade, total grammage, PE weight, and 1S / 2S configuration
- •Width, core, roll diameter, winding, splices, and packing requirements
- •Approved sample reference, inspection points, batch identification, and COA expectations
- •Commercial terms, delivery plan, claim evidence process, and change-control communication