Quality Control of HUIDE Paper Bag
As a drafting unit for paper bag industry standards,Wisdom is equipped with the industry’s most advanced and comprehensive laboratory facilities. We’ve established stringent internal quality control standards, encompassing strict supplier audits, raw material inspection, and manufacturing process oversight. Additionally, we have set up a robust traceability system for our products, enabling quality traceability to be completed within 24 hours.
Raw Material Testing
- Physical Properties: Basis weight, odor, folding endurance, bursting strength, stiffness, tensile strength, tearing strength, smoothness, brightness, opacity, dust content, thickness, moisture content, water absorption (Cobb test), grease resistance (KIT method and hot oil test), etc.
- Food Safety Indicators: Fluorescent substances, potassium permanganate consumption, heavy metals (calculated as lead), formaldehyde, total migration, microbiological tests (3 items), etc.
- Ink Inspection: Color, odor, pH value, heavy metals (multiple elements), etc.
- Adhesive Inspection: Viscosity, solid content, heavy metals (multiple elements), etc.
Paper Bag Manufacturing Control
Paper Bag Manufacturing Control
In the production process of eco-friendly paper bags, 14 types of inspections are required:
Dry rub resistance test of printing ink、Oil rub resistance test of printing ink、Drop test、Static Weight Bearing Test、Dynamic lifting test、Handle pull test、Swing test、High and low-temperature resistance test、Grease resistance test、Fluorescent substance test、Seal adhesion strength test、Basis weight detection、Dimensional measurement、Adhesive bonding strength test。
Static Weight Bearing Test
Handle Pull Test
Color Proof
Perfect and Comprehensive Inspection
Built to meet CNAS laboratory accreditation standards, capable of testing the compliance of paper, ink, and adhesive. The laboratory includes advanced testing equipment such as an atomic fluorescence spectrometer, a gas chromatography-mass spectrometer, and inductively coupled plasma emission spectrometer, capable of detecting compounds, heavy metals, and other pollutants in raw materials.
