Quality Policy
｜Plastic Film Quality Management from Raw-Material Verification to Finished-Product Testing｜
With its commitment that every product shipped must meet high standards, Der Yiing has established standardized quality-management procedures spanning raw-material verification, process parameters, clean production environments, batch control, and finished-product performance testing. Film properties are verified through tests such as coefficient of friction, heat-seal performance, tensile strength, and elongation to ensure suitability for food packaging, electronic materials, and diverse industrial applications.
Quality Commitment｜Building Consistent Quality from the Source
Der Yiing integrates quality management into every stage of production. From raw-material verification and process-parameter settings to environmental control and finished-product inspection, management standards are established according to product specifications and actual application requirements. We focus not only on final inspection results, but also on ensuring that every process condition remains stable and traceable, minimizing batch-to-batch variation and maintaining consistent film performance.
Raw-Material and Food-Safety Management
For food packaging and related applications, Der Yiing places strong emphasis on raw-material sources and safety. In addition to reviewing inspection information supplied by material vendors, we arrange third-party testing based on product and customer requirements to confirm compliance with relevant safety and environmental standards. Quality risks are reduced at the source through material selection, incoming inspection, and process management.
Process and Clean-Environment Control
Different film products have different requirements for cleanliness, thickness, heat-seal performance, coefficient of friction, and other physical properties. Der Yiing implements standardized controls according to each product's intended use and processing conditions. Production areas with different cleanliness classifications help minimize contamination risks and maintain consistent quality for food-packaging, electronic-material, and specialty-application films.
Batch Inspection and Traceability
In-process and finished-product quality checks are performed at specified stages of production. Products advance to the next stage or shipment only after meeting the applicable standards. Production records and retained samples are maintained by batch, providing traceability across raw materials, processes, and finished products while supporting continuous quality improvement and customer service.
Film Performance Verified by Data—Quality You Can Measure
Plastic film quality depends on more than appearance and thickness. It is closely tied to slip properties, sealing conditions, tensile strength, elongation behavior, and packaging-machine performance during actual processing. Der Yiing conducts physical-property testing based on product and customer process requirements, converting material characteristics into measurable, analyzable data for product development, process optimization, and quality decisions.
Key Quality Tests
01｜Coefficient of Friction Testing
The coefficient of friction is a key indicator of web-handling stability on automatic packaging equipment. By measuring the film surface's static and kinetic friction, we assess slip and resistance characteristics and evaluate the appropriate film specification based on packaging speed, machine conditions, and processing requirements. This helps improve feeding stability and high-speed packaging performance.
02｜Heat-Seal Performance Testing
Heat-sealable films and related packaging materials are tested under different combinations of temperature, dwell time, and pressure to determine seal-initiation temperature and the suitable processing window. Establishing appropriate sealing conditions helps customers reduce machine setup time, improve seal consistency, and minimize sealing defects and material waste.
03｜Tensile Strength and Elongation Testing
Tensile testing equipment is used to evaluate tensile strength, elongation at break, and deformation behavior, providing insight into mechanical performance during processing, stretching, and end use. For different films and custom specifications, the resulting data support formulation adjustments, process improvements, and product development. Where necessary, sealed specimens can also be evaluated to confirm that seal strength meets actual application requirements.
Application-Specific Quality Standards
No single film standard can serve every industry. Food packaging, electronic materials, medical supplies, and industrial applications each have different performance requirements. Der Yiing therefore defines quality-verification criteria according to product use, content characteristics, packaging equipment, and downstream processing conditions.
- Food and Flexible Packaging: Food safety, heat-seal performance, slip, heat resistance, barrier properties, and packaging-process stability.
- Electronic and Industrial Materials: Cleanliness, release characteristics, protective performance, antistatic properties, and other application-specific physical requirements.
- Custom OEM/ODM Films: Test items are defined around the customer's product, machine conditions, and processing challenges, with specifications confirmed progressively through sampling, testing, and mass-production validation.
Quality Certifications and Third-Party Testing
In addition to internal quality-management and testing systems, Der Yiing strengthens corporate management through quality, environmental, and food-safety management systems. Certifications listed on our website include ISO 9001, ISO 14001, ISO 22000, and HACCP. Depending on the product and customer requirements, we can also provide SGS, REACH, RoHS, and other relevant safety and environmental compliance information.
Through an integrated framework of management systems, process controls, performance testing, and third-party verification, Der Yiing is committed to supplying plastic films and packaging materials with consistent quality, reliable specifications, and performance matched to actual processing needs.
Continuous Improvement—Making Quality the Foundation of Long-Term Partnership
Quality management does not begin after a product is finished. It is a continuous cycle spanning product design, material selection, manufacturing, and actual customer use. Der Yiing continually improves products and processes through production records, test data, customer feedback, and root-cause analysis, transforming accumulated materials and application expertise into a technical foundation for each customer's next development and mass-production project.
- Certificates
HACCP-Certified Plastic Film Supplier
ISO 9001-Certified Plastic Film Supplier
ISO 14001-Certified Plastic Film Supplier
ISO 22000-Certified Plastic Film Supplier