Plastic Packaging Terms, in Plain English
The words buyers and suppliers use differently — and what each one actually means on a drawing.
Neck Finish
The opening specification, written as diameter/thread — e.g. 24/410 is 24 mm diameter with a 410 thread profile. Read more →
MOQ
Minimum order quantity. At 8PCK it is 1,000 pcs per colour on existing moulds. Read more →
Blow Mould
The tool that forms a bottle. About USD 850 and 15–20 days at CXWN, and it belongs to the customer. Read more →
Preform
The test-tube-shaped PET piece that is stretch-blown into a bottle. Read more →
Airless
A pack with a piston and no dip tube, so the product never meets air. Read more →
Dropper
A pipette closure on an 18/410 neck, used for serums and oils. Read more →
Lotion Pump
A pump that dispenses 1.2–2.0 ml per stroke; the default closure for 250–500 ml bottles. Read more →
Foam Pump
A pump that mixes air with a low-viscosity formula at the nozzle to produce foam. Read more →
Trigger Sprayer
A hand-squeezed sprayer on a 28/410 neck, used for home care and garden. Read more →
Disc-Top Cap
A cap that opens on a hinge with a small orifice; the lowest unit cost controlled-flow closure. Read more →
Induction Seal
A foil liner sealed to a jar rim by heat; it needs a flat land on the rim. Read more →
EPE Liner
A foam liner inside a screw cap. low-cost and fine for dry goods and creams; swells with oils. Read more →
Sleeve
A shrink film wrapped around a bottle. Makes PET harder to recycle. Read more →
Silkscreen
Direct printing on the bottle; from 1,000 pcs, and the most durable decoration for a wet environment. Read more →
Spray Coat
A painted finish on a bottle; from 3,000 pcs and adds 5–8 days. Read more →
Hot Stamp
Foil stamping for a metallic look; from 3,000 pcs. Read more →
PET
Polyethylene terephthalate — clear, stiff, widely recycled; poor with strong solvents. Read more →
HDPE
High-density polyethylene — opaque, tough, low-cost, good with surfactants. Read more →
LDPE
Low-density polyethylene — soft and squeezable, used for sauce and gel bottles. Read more →
PETG
A thicker-walled clear plastic that reads closer to glass than PET. Read more →
PP
Polypropylene — the material for hot fill above 60 °C and for most closures. Read more →
Mass Balance
An accounting method for recycled content; not the same as physically recycled content. Read more →
AQL
Acceptable quality limit — the sampling standard used at inspection. Read more →
Incoterms
Delivery terms. 8PCK quotes FOB Shantou by default; EXW and CIF on request. Read more →