Compact Hot/Cold Water Bottle Blow Molding Machine

Overview

The Compact Hot/Cold Water Bottle Blow Molding Machine is a high-efficiency solution designed for producing 200ml–2L PET bottles for hot and cold drinking water, including single-serve bottles, family jugs, and premium water containers. Engineered with dual-temperature mold control and precision stretch blow molding (ISBM) technology, this machine ensures uniform wall thickness, superior impact resistance, and dimensional accuracy for bottles exposed to extreme temperatures (0–95°C).

Features

Dual-Temperature Mold Technology:

Independent mold zone heating (50–150°C) and cooling (5–25°C) accommodate hot-fill (95°C) and cold-storage (0°C) bottles, reducing bottle shrinkage to <0.3% during thermal shock.

Servo-driven stretch rods with 0.1mm precision ensure uniform wall distribution (±5%) for bottles with handle features and square bases.

High-Speed Production:

Output: 8,000–20,000 bottles/hour (500ml), with quick mold changeover (≤20 minutes) via hydraulic clamping system, ideal for multi-size production runs.

Automatic parison weight control (±0.5g) and preform orientation sensors improve first-pass yield to 99.2%, reducing material waste by 15% compared to traditional blow molders.

Design Flexibility:

3D parison programming adjusts wall thickness in real-time for complex shapes (elliptical jugs, sport bottles with spouts), with minimal draft angles (≤1°) for premium aesthetics.

Low-pressure air system (4–6 bar) for gentle bottle ejection, enabling high-gloss finishes (Ra ≤0.2μm) and embossed logos without surface scratches.

Energy & Material Efficiency:

100% electric servo drives reduce energy consumption by 30% compared to hydraulic systems, with scrap recycling reclaiming 98% of production waste for rPET reuse.

Compliance with ISO 14001, featuring LED lighting and regenerative braking for sustainable manufacturing.

Application

Ideal for water bottle production in diverse markets:

Single-Serve Bottles: 200ml–500ml PET bottles for convenience stores and vending machines, supporting both still and sparkling water.

Family-Size Jugs: 1.5L–2L containers with ergonomic handles, compatible with hot-fill processes for sterilized water and cold-storage applications.

Premium Waters: Glass-like PET bottles for artisanal mineral water, with optional anti-UV additives for light-sensitive products.

The machine integrates with preform feeders and downstream filling lines, forming a seamless solution for water bottle manufacturing.

FAQ

Q: What is the maximum temperature tolerance for hot-fill bottles?

A: Bottles produced on this machine withstand 95°C for 30 minutes with <0.5% shrinkage, compliant with ASTM D4648 for hot-fill packaging.

Q: Can the machine produce bottles with handle features?

A: Yes, custom molds with integrated handle cavities are available, supporting load-bearing handles for 2L jugs (load capacity ≥5kg).

Q: How is preform quality verified before molding?

A: An in-line vision system checks preform neck diameter (±0.1mm) and weight (±0.5g), rejecting defective preforms to ensure consistent bottle quality.

Q: What is the minimum wall thickness for lightweight bottles?

A: The machine supports wall thicknesses from 0.2mm (single-serve) to 1.5mm (jugs), enabling material savings of up to 20% without compromising durability.