QUALITY ASSURANCE

A Batch Is Released on Measured Data, Not on Confidence

Six control points during production, six laboratory tests before release, and a signed record against every batch number we ship.

IN-PROCESS CONTROL

Six Points Where A Batch Can Be Stopped

Inspecting finished goods only tells you what you already made. These checks happen while the material is still on the line, when a deviation is a correction rather than a write-off.

01
Incoming

Raw Material Verification

Film gauge, width and clarity are checked against the purchase specification before any reel is released to the coating hall. Adhesive batches are logged with supplier lot numbers.

02
In-Process

Coat Weight Monitoring

Adhesive deposition is monitored across the web during the run, not sampled once at the centre line, so edge-to-edge variation is caught while it can still be corrected.

03
In-Process

Curing Control

Oven temperature and line speed are held within the window defined for each adhesive system. Deviations halt the run rather than being corrected downstream.

04
Post-Coat

Roll Structure Inspection

Wound rolls are checked for telescoping, banding and edge condition before they move to slitting, where those defects would multiply across every finished roll.

05
Finishing

Slit Width and Edge Check

Finished widths are verified against tolerance and edges inspected for burrs and gum, since both surface as customer complaints later.

06
Release

Batch Sign-Off

A batch is released only once its laboratory results are recorded against the batch number and signed by the quality owner for that shift.

LABORATORY TESTING

What We Measure Before Release

Peel Adhesion

Measured against steel and standard test substrates to confirm consistent bonding strength.

Tensile Strength

Verifies the film withstands the pull of automatic applicators and heavy carton loads.

Elongation at Break

Confirms the film stretches within specification instead of snapping under tension.

Thickness Uniformity

Micrometer checks across the web width keep coating deposition even, edge to edge.

Holding Power

Static load testing confirms the adhesive holds over time without creep or slippage.

Unwind Force

Ensures rolls release smoothly and quietly on high-speed sealing equipment.

Batch test records and retained samples at Petra Adhesive
TRACEABILITY

Every Roll Traces Back to the Film It Was Coated On

Batch numbers link the finished roll to its coating run, its adhesive lot, its incoming film reel and the test results recorded at release. When a customer queries a consignment months later, we can answer from records rather than from memory.

  • Documented in-process checks at every production stage
  • Batch-wise test records with full traceability
  • Calibrated testing instruments and defined test methods
  • Incoming material inspection before production release
  • Final inspection and sign-off prior to dispatch
  • Corrective action process for any customer feedback
HOW THE SYSTEM HOLDS

Discipline That Survives A Busy Shift

Defined Test Methods

Each property is measured by a documented method with a stated instrument, sample size and condition, so results are comparable across shifts and months.

Instrument Calibration

Testing instruments are calibrated on a schedule and records retained, because uncalibrated data is not evidence.

Retained Samples

Samples from released batches are retained so any query months later can be checked against the material actually shipped.

Corrective Action Loop

Customer feedback opens a recorded investigation with a root cause and a verified fix, rather than a replacement consignment and silence.

COMMON QUESTIONS

Frequently Asked Questions

Minimum order quantity depends on the product and specification. Standard BOPP tape and thermal labels are available in smaller trial quantities, while jumbo rolls and custom printed tape carry a higher minimum. Share your requirement and we will confirm the exact MOQ.

Yes. We manufacture to your specification - width, length, thickness, colour and multi-colour print. Send your artwork and dimensions and our team will revert with a sample plan and quotation.

We supply BOPP and double-sided tissue jumbo rolls in bulk widths up to 1300 mm to converting and slitting units, with batch-wise test reports for every dispatch.

Standard products typically dispatch within a few working days of order confirmation. Custom printed and made-to-specification orders depend on artwork approval and production scheduling, which we confirm at the time of order.

Yes. We encourage customers to test our products in their own application. Contact us with your requirement and we will arrange samples of the closest matching grade.

Each batch is tested for peel adhesion, tensile strength, elongation, thickness uniformity, holding power and unwind force before it is released for dispatch.

Ask for the Test Report Before You Commit

Samples are more convincing with data attached. Ask for trial rolls with the batch results, run them on your own line, and compare the numbers against whatever you are using today.

If our figures do not beat your current supplier, we would rather you kept them.
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