Low-Migration PVC Flexible Film

Technical Parameters

Material Selection Guide

Low-migration film selection depends on the severity of the required chemical stability and flexibility.

• Environmental Constraints: For the lowest VOC and highest stability, select grades utilizing non-DOP plasticizers such as DINP or DOTP.

• Temperature Requirement: Match the required Cold Bend Test temperature (e.g., −20∘C or −40∘C) to the operating environment of the final product.

• Aesthetic Need: Available in clear, opaque white, and various custom colors, allowing for both functional and decorative uses.

Manufacturing and Tailoring

We employ specific compound mixing and heating profiles to ensure complete plasticizer dispersion.

• Compound Purity: Raw material batches are strictly inspected to ensure the correct molecular weight plasticizers are used and contamination is avoided.

• Post-Processing: The film is cooled at a controlled rate post-calendering to enhance the material's internal structure and reduce internal stress.

• Traceability: Each roll is marked with a batch code that links back to the raw material compounding data and migration test results.

Deployment FAQ

• Q: How is "low migration" chemically confirmed?

  A: Migration testing is conducted by placing the film in direct contact with a test substrate (e.g., activated carbon or specific polymers) over a set period at an elevated temperature, followed by quantitative analysis of the migrated components.

• Q: Does the low-migration film have a higher density than standard PVC?

  A: The density is marginally higher, primarily due to the use of higher molecular weight plasticizers. This may be reflected in a slightly increased roll weight for the same dimensions.