Equipped with professional testing instruments including laser thickness gauges, electronic tensile testers and hazemeters, all devices undergo regular calibration and traceability management to meet national and industrial standards, enabling full and accurate testing of physical, optical and thermal properties.
Adopt manual visual inspection combined with online CCD automated detection to check surface defects such as fish eyes, scratches and oil stains, as well as end flatness, joint conditions and paper core status. All appearance defects that affect printing and processing are strictly eliminated.
Sampling inspection is conducted for thickness uniformity, basis weight, tensile strength and coefficient of friction. Deviations in dimensional and mechanical indicators are tightly controlled to ensure sufficient stiffness and toughness, fully adapting to subsequent processing requirements.
Test thermal shrinkage rate to guarantee dimensional stability, and measure haze, glossiness and light transmittance to ensure high printing color reproduction, meeting visual and processing demands across diverse application scenarios.
Complete standardized and traceable workflow:
Sampling → Preliminary Visual Inspection → Equipment Calibration → Performance Testing → Data Judgment → Non-Conforming Product Isolation → Inspection Report Issuance, ensuring full compliance and consistent batch quality.
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