- Product Description
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Product Description
The semi-automatic 5 gallon PET bottle blowing machine is designed to manufacture large-capacity 20L PET water bottles for commercial drinking water production. Featuring a single-cavity mold configuration, this 20L PET bottle blow molding machine offers a practical solution for small and medium-sized water bottling plants that require controlled production output and a relatively low initial equipment investment.
The machine uses an infrared heating system to heat PET preforms before the blow molding process. The preforms rotate during heating to help achieve more uniform temperature distribution. Adjustable heating lamp and reflector positions allow the heating setup to be adapted to different preform requirements. A pre-blowing stage followed by high-pressure blowing helps shape the heated preform inside the mold.
Equipped with a microcomputer-based control system, the 5 gallon PET bottle making machine allows operators to adjust operating parameters during production. Its semi-automatic design supports straightforward operation and routine maintenance, while the single-cavity configuration is suitable for manufacturers focusing on large-volume water containers rather than high-speed production of small bottles.
According to the supplied technical data, the machine has a theoretical output of 80–100 bottles per hour, with a maximum listed product volume of 25 liters. Actual production output and bottle compatibility depend on the preform, mold, bottle design, and operating conditions.
For businesses producing large PET water containers, this semi-automatic PET blow molding machine provides a practical starting point for establishing or expanding an in-house bottle manufacturing process.
Features
1. Single-Cavity Mold for Large PET Water Bottles
The single-cavity configuration is designed for large-format containers, including 5 gallon PET water bottles. It supports focused production of large bottles without requiring a multi-cavity, high-speed production setup.
2. Infrared Preform Heating
The infrared heating system heats PET preforms before they enter the blowing stage. Rotating the preforms during heating helps distribute heat more evenly, supporting consistent forming conditions throughout the bottle body.
3. Adjustable Heating Settings
The heating lamp and reflector positions can be adjusted according to the preform structure and heating requirements. Proper adjustment helps operators establish suitable heating conditions for the selected bottle design.
4. Pre-Blowing and High-Pressure Blow Molding
The PET bottle blow molding machine uses pre-blowing followed by high-pressure blowing to expand the heated preform inside the mold. Correct temperature, pressure, and timing settings help achieve the required bottle shape and wall distribution.
5. Microcomputer-Based Control
The control system allows operators to adjust operating parameters and manage the blowing process. Actual control functions and available parameter settings should be confirmed for the final machine configuration.
6. Practical Operation and Maintenance
The semi-automatic design offers a relatively straightforward operating process for manufacturers with moderate production requirements. Routine inspection, mold maintenance, and proper temperature and pressure settings help maintain stable operation.
7. Compressed Air System Support
PET bottle blow molding requires a suitable compressed air supply. The air compressor, air dryer, and precision filters should be selected according to the machine's confirmed pressure, flow, and air-quality requirements.
Specifications
| TYPE | ITEM | UNIT | TECHINICAL DATA |
| LAMP COVER | Product material | PET | |
| container volume | Dia | Φ270mm max | |
| Max volume of product | L | 25 | |
| theoretical output | pcs/hr | 80-100pcs | |
| MOULDING | max.mould plate dimension(W*H) | mm | 450 *550 |
| max thickness of mould | mm | 280-400 | |
| clamping force | KN | 220 | |
| mould opening stroke | mm | 350 | |
| air compressor | air compressor | M3 /Mpa | ≥1.2/3.0*1set |
| air pressure for blowing | KW | 11 | |
| low pressure compressor | M3 /Mpa kw | ≥0.8/1.25*1set 7.5 | |
| Air cooling dryer | M3 /Mpa kw | ≥1.0/30*1set | |
| 1.5 | |||
| Precision air filters | M3 /Mpa | ≥1.0/30*2set | |
| main machine electricity | power | KW | 1.5/35 |
| voltage/frequency | V/HZ | 380/240/110/50-60 (3-phase) | |
| machine size and weight | main machine(L*W*H) | M | 2.3*0.74*2.0 |
| main machine weight | T | 1.1 | |
| heater(L*W*H) | M | 2.75*0.65*1.66 | |
| heater weight | T | 0.62 |
Applications
The 5 gallon PET bottle blowing machine is intended for manufacturers producing large-capacity PET containers. Its main applications include:
Purified Water Bottles: Manufacturing large PET containers for purified drinking water.
Mineral Water Bottles: Producing large-format PET bottles for mineral water bottling plants.
Commercial Drinking Water Packaging: Supporting in-house bottle production for water distribution businesses and bottled water suppliers.
Large-Capacity PET Container Production: Producing compatible large PET containers when the required bottle dimensions and mold specifications fall within the machine's operating range.
Small and Medium-Sized Bottling Plants: Helping businesses establish or expand their PET bottle production capacity without immediately investing in a fully automatic system.
For a complete manufacturing project, this machine can be considered alongside a suitable water treatment system, 5 gallon water filling equipment, and other downstream packaging machinery.
Explore our gallon water production solutions for equipment planning, or visit our PET blow molding machine range to compare other bottle manufacturing options.
PET Bottle Blow Molding Process
The 20L PET bottle blow molding machine generally operates through the following stages:
Preform Preparation: Prepare PET preforms that match the target bottle design and neck specifications.
Infrared Heating: Heat the preforms in the heating unit. Preform rotation and appropriate lamp settings help establish the required heating profile.
Mold Positioning: Position the heated preform in the compatible bottle mold.
Pre-Blowing: Introduce pre-blowing air to begin expanding the heated preform.
High-Pressure Blowing: Apply the specified blowing pressure to form the bottle against the mold cavity.
Cooling and Demolding: Allow the bottle to stabilize before opening the mold and removing the finished container.
Bottle Inspection: Check dimensions, appearance, wall distribution, and other quality requirements before moving bottles to filling or storage.
The actual sequence and degree of manual handling depend on the machine configuration.
Frequently Asked Questions
What size of bottles can this semi-automatic PET blow molding machine produce?
The machine is marketed for 20L / 5-gallon PET water bottles. The supplied specifications list a maximum container diameter of 270 mm and a maximum product volume of 25 liters. The intended bottle design must be checked against the mold dimensions and other machine limits before ordering.
What is the production capacity of the 5 gallon PET bottle blowing machine?
The listed theoretical output is 80–100 bottles per hour. Actual output may vary depending on the bottle design, preform heating conditions, blowing cycle, operator handling, and production settings.
What raw material does the machine use?
This model is designed for PET preforms. Preform weight, dimensions, neck finish, and material suitability should be confirmed according to the finished bottle requirements.
How does infrared heating improve PET bottle production?
Infrared heating prepares PET preforms for stretching and blowing. Rotating the preforms and adjusting the heating setup help distribute heat more evenly, supporting consistent forming conditions. Actual bottle quality also depends on preform properties, temperature settings, mold design, and air pressure.
Can the machine produce different bottle shapes or sizes?
Different bottle designs may require compatible molds and adjustments to the heating and blowing parameters. The maximum listed mold plate dimensions are 450 × 550 mm, but the full bottle geometry and mold compatibility should be reviewed before confirming a new format.
What is the difference between a semi-automatic and a fully automatic 5-gallon PET bottle blowing machine?
A semi-automatic PET bottle blowing machine generally requires more operator participation during production, while a fully automatic system can automate additional handling and feeding stages. The suitable option depends on target output, labor availability, budget, and integration requirements.
For a comparison, see our automatic 5 gallon PET bottle blowing machine.
About Suzhou Yaoshi Machinery Co., Ltd.'s factory
After Sales Service
Yaoshi Machinery provides technical support for customers purchasing PET bottle blowing equipment.
Installation and Commissioning: Technical personnel can assist with equipment installation, commissioning, and trial production according to the agreed service arrangement.
Operation and Maintenance Training: Training covers machine operation, equipment structure, routine maintenance, and basic troubleshooting.
Technical Support: Customers can request operating videos and technical guidance to help understand machine setup and production procedures.
Warranty: The existing product information specifies a 12-month warranty and lifetime technical support. Confirm warranty coverage and terms in the sales contract.
Equipment Consultation: Contact our team to discuss bottle specifications, expected output, mold requirements, and the auxiliary equipment needed for your production project.
To select the right 5 gallon PET bottle making machine, please provide your bottle drawing or sample, target capacity, preform specifications, and available factory utilities. Our team can review these requirements and recommend a suitable configuration.
More Details
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Q: Are you a trading company or a manufacturer?
A: We are a direct-operated factory located in Zhangjiagang City so we can provide you with high-quality machines at a reasonable price, welcome to visit us.
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Q: Are all your products produced by yourself or compressed by purchasing other products?
A: We have independent R&D and production teams focusing on manufacturing machines, and we have our own processing center, and all products are manufactured by our technical team.
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Q: What is the capacity of your factory?
A: About 100+ production lines per year.
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Q: How about spare parts?
A: We will send one year’s worth of easily damaged spare parts with the machine and ship them together. During the warranty period, we will provide spare parts at a cost including freight.
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Q: How long does it take to install?
A: According to your machine order, we will send one or two engineers to your factory, which takes about 10 days to 25 days.
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Q: How to install the machine after it arrives?
A: We will send engineers to your factory to install the machine and train your employees how to operate the machine.
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Q: When can I get the machine after payment?
A: Usually the production time is about 30-60 days, depending on the type of machine you ordered. The shipping time is subject to your port of destination.
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Q: If we buy your machine, what is your guarantee or warranty on the quality?
A: We provide you with high-quality machines with a 1-year warranty and lifetime technical support.
