Long Neck PET Bottle Preform & Specialized Injection Mould

1. Finished Preform Product Features

• Structure: Long straight cylindrical body, rounded bottom, standard threaded neck for screw cap assembly
• Material: Virgin bottle-grade PET, milky white opaque or fully transparent customizable
• Function: Intermediate blank for blow molding plastic bottles for drinking water, cosmetic lotion, disinfectant, detergent liquid packaging
• Surface finish: High gloss smooth surface without flow lines, bubbles or crystallization haze
• Standard neck thread design ensures leak-proof matching with standard plastic caps after blow molding

2. Core Mould Technical Advantages

• Cavity & core inserts: S136H / STAVAX stainless steel, mirror polished to Ra ≤0.02μm
• Anti-rust nitriding treatment, fully compliant with FDA, NSF food contact safety standards
• Eliminates PET crystallization, white fog and optical defects for consistent glossy preform appearance

• Full surrounding spiral water cooling channels for each long cavity and core pin
• Fast heat exchange shortens injection cycle time by 25–35%, controls uniform wall thickness on long cylindrical body
• Separated cooling inlet/outlet circuit for every single cavity to avoid temperature difference between cavities

• Customizable cavity quantity: 8/16/24/32 cavities available for high hourly output
• Symmetrical hot runner manifold design, equal melt flow distance to each cavity, preform weight tolerance ≤±0.02g
• No cold runner waste, reduce raw material cost for mass packaging production

• Long integrated sleeve ejector matched with long core pins, synchronous uniform ejection
• Effectively prevent neck thread scratch, body deformation and sticking during demoulding of long slender preforms

• Mould base: 718H pre-hardened steel, thickened frame to resist high PET injection pressure
• Service life: 800,000–1,200,000 continuous shots for 24-hour mass production
• All standard components follow HASCO / LKM international specifications

3. Material & Application Scope

A. Compatible Raw Material: Virgin bottle-grade PET, anti-UV modified PET, opaque white masterbatch PET

B. Finished Product Application

• Tall beverage plastic bottles, mineral water & functional drink packaging
• Cosmetic spray bottles, lotion and skincare liquid containers
• Household chemical bottles: disinfectant, detergent, cleaning agent bottles
• Industrial small liquid reagent plastic packaging bottles

4. One-Stop Mould Manufacturing Service

DFM professional PET analysis: optimize cooling layout to avoid long body warpage & crystallization

Full UG 3D mould design + 2D engineering drawing, BOM list output

CNC, wire EDM, sinker EDM precision machining + mirror cavity polishing

Mould assembly, fitting, on-machine trial & preform weight/thickness inspection

Blow molding matching test support, mass injection technical guidance

Lifetime spare parts supply & overseas remote maintenance support