Regarding industry standards for PVC overmolding, there are currently no publicly available unified national or industry standards specifically for this general process. However, several industry standards exist related to PVC-coated products or specific overmolding structures, applicable to different application scenarios.
PVC/PET Composite Coated Yarn: Suitable for circular cross-section PVC/PET composite coated yarns with a linear density of 1,000.0 dtex to 46,000.0 dtex and a diameter of approximately 0.20 mm to 3.00 mm.
Plastic-coated steel ladders (including PE/PVC double-layer coating) Although the standard number is not explicitly given, the information mentions the use of national standard Q235 base material and PE/PVC double-layer coating process, implying that it complies with relevant metal product coating specifications, possibly referencing building or safety protection equipment standards.
The quality of PVC-coated products must meet international and industry standards, such as IEC 60227 (electrical wires and cables) and ASTM D1784 (PVC material properties). Key indicators include the uniformity of PVC layer thickness, adhesion, heat resistance, and environmental performance (such as compliance with RoHS directives). During production, quality must be monitored in real time using online testing equipment (such as laser thickness gauges and spark testing machines) to ensure product qualification rates.
