ISO 9001:2015 Certified · BPA-Free Verified

Quality Control

A rigorous 4-stage quality control process — from incoming material inspection to final shipment documentation — ensures every batch meets international standards.

OUR PROCESS

4-Stage Quality Control Process

Every product passes through four mandatory checkpoints before leaving our facility, ensuring consistent quality across every order.

STEP 01

Incoming Material Inspection

Every batch of raw materials undergoes rigorous testing for coating weight, smoothness, thermal sensitivity, and moisture content before entering production.

  • Coating weight measurement (g/m²)
  • Thermal sensitivity test
  • Moisture content check
  • Surface smoothness evaluation
  • Supplier certificate verification
STEP 02

In-Process Quality Control

Real-time monitoring during slitting, printing, and converting processes. Automated sensors check dimensions, print alignment, and surface quality continuously.

  • Roll width tolerance ±0.5mm
  • Roll diameter consistency
  • Print registration accuracy ±0.1mm
  • Surface defect detection
  • Tension and winding uniformity
STEP 03

Laboratory Testing

Dedicated QC laboratory performs thermal imaging tests, adhesion tests, color density measurements, and accelerated aging tests to ensure product longevity.

  • Thermal imaging density test
  • Image durability (light/heat/water resistance)
  • Adhesion peel strength (for labels)
  • BPA/BPS chemical content test
  • Accelerated aging simulation
STEP 04

Final Inspection & Documentation

100% visual inspection before packaging. Each shipment includes quality certificates, test reports, and batch traceability documentation for tender compliance.

  • 100% visual inspection
  • Quantity and packaging verification
  • Quality certificate issuance
  • Batch traceability record
  • SGS / third-party test report (on request)
ZhixinPaper Quality Control Laboratory
Paper Quality Inspection Process
IN-HOUSE LABORATORY

Dedicated Testing Laboratory

Our on-site QC laboratory is equipped to perform comprehensive testing without relying on external labs, enabling faster turnaround and tighter quality feedback loops.

Thermal Sensitivity Testing

Measures activation temperature and image density under standardized heat exposure to verify print performance.

Water & Chemical Resistance

Tests image stability when exposed to water, alcohol, oils, and common retail chemicals.

Optical Density Measurement

Densitometer readings confirm that printed images meet minimum contrast and barcode scanability standards.

Dimensional Accuracy

Caliper and laser measurement of roll width, core diameter, and roll OD to verify specification compliance.

BPA/BPS Chemical Testing

All thermal paper products are tested to confirm BPA-free and BPS-free compliance, meeting EU, FDA, and California Prop 65 requirements.

Accelerated Aging Test

Simulates long-term storage conditions (heat, humidity, UV) to validate image retention and paper stability over time.

DOCUMENTATION

Full Documentation for Every Shipment

We provide complete quality documentation with every order — essential for tender compliance, import clearance, and audit requirements. Third-party SGS test reports are available on request.

  • Quality Certificate (per batch)
  • SGS Test Report (on request)
  • BPA-Free Declaration
  • ISO 9001:2015 Certificate
  • Material Safety Data Sheet (MSDS)
  • Batch Traceability Record
  • Packing List & COA
  • Third-Party Lab Reports (on request)

Standards We Meet

ISO 9001:2015Quality Management System
ISO 14001:2015Environmental Management
EU REACHChemical safety compliance
California Prop 65BPA/BPS-free compliance
FDA 21 CFRFood contact safety standards
FSC CertifiedSustainable paper sourcing

Need Quality Documentation for Your Order?

Contact us to request test reports, quality certificates, or to discuss specific compliance requirements for your market.