Even colour across walls
Blow-moulded walls vary in thickness, so well-dispersed pigment is needed to keep colour uniform between thick base and thin shoulders.
Applications
Pigments for Blow Moulding
Pigment recommendations for blow moulding with technical checks and export enquiry support.
Blow moulding produces hollow parts like bottles, containers and drums, mostly from polyethylene and PET, where wall thickness varies and stretch is involved. Organic pigments must be heat stable for the melt, non-warping in polyolefin containers, and, for bottles, must not affect clarity or stretch behaviour unduly. Migration control matters where containers hold liquids or consumer products. Buyers should confirm dispersion at low let-down for even wall colour, warp-safe grades for rigid HDPE containers, and, in PET bottles, heat-stable grades that survive the higher processing temperature without hazing.
At a glance
What Pigments for Blow Moulding covers
Warp-safe for HDPE
Rigid HDPE bottles and drums warp if pigments nucleate crystallisation, so specify non-warping grades for dimensionally stable containers.
Clarity in tinted PET
Transparent tinted PET bottles need pigments that colour without hazing, preserving the see-through clarity buyers expect in beverage packaging.
Migration for contents
Containers hold liquids and goods, so choose low-migration pigments that will not bleed into contents or affect product safety.
Recommended pigments
High-demand grades to consider
A starting shortlist of export-grade organic pigments relevant to Pigments for Blow Moulding. Open any grade for shade, fastness and packing detail, or send your requirement for a matched recommendation.
Green Pigments
Phthalocyanine Green 7
Pigment Green 7Chlorinated phthalocyanine green for durable industrial coloration.
View export grade Yellow PigmentsPigment Yellow 138
PY138High-performance yellow for demanding coating and plastic requirements.
View export grade Orange PigmentsPigment Orange 13
PO13Diarylide orange used for inks, textiles, and industrial colorants.
View export grade Pigment PastesWater Based Pigment Paste
Water Based PasteWater-dispersible pigment paste for coatings and textile systems.
View export grade Yellow PigmentsPigment Yellow 13
PY13Bright green-shade yellow for offset ink and coating applications.
View export gradeExplore more
Related pages & export hub
Answers
Pigments for Blow Moulding — frequently asked questions
How does wall-thickness variation affect colour in blow moulding?
Blow-moulded parts have thick and thin regions, and colour looks deeper where the wall is thicker. Good pigment dispersion and correct let-down keep the shade visually uniform. Poor dispersion exaggerates the difference and shows specks, so even, finely dispersed pigment is important for consistent container appearance.
Do HDPE blow-moulded containers need non-warping pigments?
Yes. Rigid HDPE bottles, jerrycans and drums can distort if a pigment nucleates crystallisation and changes shrinkage unevenly. Non-warping grades keep containers dimensionally true so they seal, stack and fill correctly. This is especially important for necks, handles and flat panels on the container.
What changes when blow moulding PET instead of polyethylene?
PET processes at higher temperatures and is often used for clear bottles, so pigments must be more heat stable and must not haze transparent tints. Polyethylene containers instead prioritise warpage control. The higher PET processing window narrows the usable pigment set toward more heat-stable grades.
Why is migration a concern for blow-moulded bottles?
Bottles and containers hold liquids, foods and consumer products, so pigments that migrate could bleed into contents or to the outer surface. Low-migration grades keep colour in the wall and avoid contaminating what the container holds, which matters for both appearance and product-contact safety.
Buyer knowledge base
Pigments for Blow Moulding: a quick sourcing guide
Everything a procurement team checks before a pigment order — technical fit, compliance documents, packing and lead time — in one short brief.
Weatherable choices
For outdoor use, phthalocyanine and DPP grades keep colour through sun and weather.
Container-ready packing
Bags, cartons, pallets and labels planned for clean warehouse handling and clearance.
Documents ready
TDS, SDS/MSDS and batch COA, plus REACH and RoHS declarations issued on request.
Fastness that fits
Heat, light, weather, solvent and migration resistance matched to the end use, not over-specified.