5 Key Heat Stability Pitfalls for PVC Edge Bands! Machine Clogging, Export Detention, Easy Aging? Just Copy the Solutions

PVC Edge Band Extrusion (160-200℃): Degradation Prevented by Heat Stabilizers, But 5 Issues Cause Manufacturer Losses & Customer Complaints – Precise Solutions Below:

1.Insufficient heat stability: Edge bands turn yellow/burnt; machines stop!

(1) Manufacturers suffer: Material has burnt particles/bubbles, die heads clog for 4 hours, and a batch is scrapped.

(2) Customers dislike: Edge bands break when folded, with yellowing and impurities.

▶ Solution: Choose calcium-zinc/barium-zinc composite stabilizers; control dosage based on resin/filler content; adjust screw speed to reduce die head high temperature.

2.Strong migration: Blooming causes poor adhesion; rework leads to heavy losses!

(1) Manufacturers worry: Edge bands develop white powder/oil in 1-3 months, easily falling off when bonded to boards.

(2) Customers complain: Cabinet edge bands fall off, posing safety risks.

▶ Solution: Replace with high-molecular-weight calcium-zinc stabilizers + 0.5 parts ESO; make pre-dispersed masterbatches before extrusion; extend cooling time to 20 seconds.

3.Poor compatibility: Edge bands break easily, with bad appearance!

(1) Manufacturers lose: Surface has pockmarks, breaks on impact, and delaminates after long use.

(2) Customers complain: Poor durability; wasting money on defective products.

▶ Solution: Choose calcium-zinc stabilizers with SP value 9.0-9.8; use nano-grade stabilizers + ACR-401; add PE-g-MAH compatibilizer.

4.Non-compliant environmental standards: Export detention, customer rejection!

(1) Manufacturers panic: Heavy metals exceed RoHS/national standards; VOCs exceed limits.

(2) Customers refuse: Fear toxic edge bands, dare not use them on cabinets.

▶ Solution: Fully replace with lead-free calcium-zinc/compliant organotin; require SGS/CTI reports; use ESO instead of phthalate plasticizers to reduce VOCs.

5.Weak weather resistance: Brittle cracking in 3 months outdoors!

(1) Manufacturers struggle: Window edge bands turn yellow and warp; complaints pile up.

(2) Customers dislike: Aging soon after use; wasting money for nothing.

▶ Solution: Use weather-resistant composite stabilizers; add 0.2-0.5 parts UV-531 + 0.1-0.3 parts 1076; keep zinc salt in calcium-zinc stabilizers ≤30%.