Automatic Bottle Blowing Machine for Pet Bottle Making

Overview

The Automatic Bottle Blowing Machine for PET Bottle Making is a high-efficiency solution designed to transform preforms into custom-shaped PET bottles with precision and speed, serving as the core of any PET packaging line. Engineered for industries ranging from beverages to personal care, this machine uses stretch blow molding technology to create bottles with consistent wall thickness, clarity, and structural integrity. With a production capacity of 3,000 to 15,000 bottles per hour (depending on bottle size), it supports bottle volumes from 100ml to 5L, including round, square, and contoured designs for water, juices, detergents, and more. The system features quick mold changeovers and energy-saving components, making it an ideal investment for producers seeking flexibility and cost-effectiveness in PET bottle manufacturing.

Features

Stretch Blow Molding Technology:

Dual-stage process (preform heating + blow molding) ensures uniform wall distribution (thickness variation <5%), critical for preventing bottle deformation during filling and transportation.

Infrared preform heaters with adjustable quartz lamps (wavelength: 3-5μm) heat PET preforms to optimal temperature (90-110°C) for consistent clarity and impact resistance.

Multi-Mold Compatibility:

Quick-release mold clamps allow switching between bottle designs (neck diameter: 18-100mm, volume: 100ml-5L) in <30 minutes, with optional automatic mold alignment for precision.

Supports both single-cavity (for prototype testing) and multi-cavity molds (up to 16 cavities for high-speed production), maximizing output for standard 500ml water bottles.

Intelligent Process Control:

PLC-based system with 12-inch HMI adjusts blowing pressure (20-40 bar), stretching speed, and cooling time in real time, storing up to 500 preform-to-bottle recipes for one-touch operation.

Vision system inspects bottle dimensions (neck height, wall thickness) and rejects non-conforming bottles (defect rate <0.1%), ensuring compliance with ISO 9001 standards.

Energy & Resource Efficiency:

Regenerative thermal system recovers 60% of heat from preform heaters, reducing power consumption by 35% compared to traditional blow molders.

Low-pressure air cooling (5-8 bar) minimizes compressed air usage, while water-cooled molds maintain optimal temperature control for rapid cycle times (6-12 seconds per bottle).

Hygienic & User-Friendly Design:

Food-grade lubricants and corrosion-resistant 304 stainless steel frames ensure compliance with FDA and EU 10/2011 regulations, suitable for beverage and pharmaceutical applications.

Ergonomic access panels and automatic safety guards simplify maintenance, with remote diagnostics via Ethernet for real-time performance monitoring.

Applications

Beverage Industry: Produces PET bottles for drinking water (500ml-5L), juices, sports drinks, and carbonated sodas, with optional anti-UV additives for outdoor storage.

Personal Care & Household: Creates containers for shampoos (300ml), detergents (1L), and liquid soaps (500ml), supporting custom shapes for brand differentiation.

Industrial & Chemical: Forms heavy-duty PET bottles (up to 5L) for solvents, lubricants, and cleaning agents, with thickened walls (2-3mm) for chemical resistance.

Cosmetics & Pharmaceuticals: Manufactures clear, lightweight PET bottles for lotions, serums, and oral liquids, compatible with sterile filling lines via optional cleanroom upgrades.

FAQ

Q: What is the minimum preform size the machine can process?

A:It handles preforms from 10g (100ml) to 100g (5L), with adjustable grippers for preform neck diameters (18-100mm).

Q: How does the machine ensure bottle clarity for premium beverages?

A:Precise temperature control during heating (±1°C accuracy) and low-pressure blowing reduce molecular orientation defects, achieving haze levels <1% for crystal-clear bottles.

Q: What is the typical lifespan of a mold set?

A:High-quality molds (aluminum or steel) last 500,000-1,000,000 cycles with proper maintenance (regular lubrication and cooling system checks).

Q: Can it produce bottles with handle structures (e.g., 5L water jugs)?

A:Yes, custom molds with integrated handle cavities are available. The machine’s stretching mechanism is optimized to reinforce handle stress points for load-bearing bottles.

Q: Does it require a dedicated air compressor?

A:Yes, a 10-20 bar compressed air system (oil-free, ISO 8573-1 Class 1.1.1) is required. We offer turnkey solutions including air preparation units for seamless setup.