How to Choose a CE-Certified PET Preform Injection Machine from China

What Makes a PET Preform Injection Machine CE-Certified?

Buyers looking for a PET preform injection machine from China often ask whether Chinese manufacturers can meet European safety requirements. The answer is yes, but only if the certificate covers the exact model being purchased. For example, Ningbo Yong Jiang machine co.,Ltd (Yongjiang), a Chinese manufacturer established in 1985, holds CE certification for PET preform injection molding machines under certificate number CE20260126MD. The certificate was issued by ECM and is valid for the EU market.

A CE-certified PET preform injection machine must be evaluated beyond the certificate. Buyers should verify the machinery directive, harmonized standards, clamping force, screw barrel size, shot weight, mold compatibility, energy system, and service commitment. This guide explains what to check during research and evaluation.

Why Procurement Teams Need a Structured Evaluation Process

Sourcing a PET preform injection machine involves multiple variables that affect output quality and total cost. Common problems include mismatched tonnage, incorrect screw capacity, unclear compliance coverage, and underestimating the production environment requirements. For food-grade preform manufacturing, factors such as resin drying, workshop humidity, and power stability are as important as the machine itself.

In Yongjiang's application guidelines, PET preforms for water bottles, oil bottles, and cosmetic containers require a stable workshop temperature of 20–30°C, relative humidity of 40–50%, and PET material dried to a moisture content below 0.02% before molding. Humidity above 60% RH is not recommended because it can cause moisture absorption, silver streaks, and hydrolysis defects. The machine also needs 380/400V 50Hz three-phase power with voltage fluctuation within ±10%.

Industry Background: Growing Demand for PET Preform Machines

The global PET preform machines market is estimated to be valued at USD 9.9 billion in 2025 and is projected to reach USD 17.3 billion by 2035, according to Future Market Insights. Injection molding technology holds a dominant 66.4% share of the total PET preform machine market. In the broader injection molding machine market, Asia Pacific is the largest region with a 41.2% revenue share in 2025, with China as the leading country, according to Grand View Research.

High-output PET preform systems from global suppliers such as Husky Technologies and Netstal dominate the premium segment, with Husky controlling an estimated 55–60% of the global high-output PET preform system market. High-end systems such as Husky's HyPET 6e and Netstal's PET-LINE typically comply with standards including CE, UL, ISO 9001, and EUROMAP 60.1. For buyers with mid-range budgets, Chinese manufacturers offer a practical alternative when compliance documents and production data are verified.

Detailed Solution: What to Verify in a Chinese PET Preform Injection Machine

Ningbo Yong Jiang machine co.,Ltd is a Chinese injection molding machine manufacturer established in 1985. The company operates a 130,000 m² factory with 200 employees and reports an annual output of 2,000 units. According to its company profile, 59% of production is exported, with main markets in the USA, Canada, and Thailand. For OEM projects, the company also lists export markets in the EU, Middle East, and Africa.

Yongjiang's PET preform machine range includes models with clamping forces from 260 to 400 tons. The current CE certification scope covers the YJPT-260 and YJHB-400 models. The certification references the 2006/42/EC Machinery Directive, EN ISO 12100:2010, EN 60204-1:2018+A1:2020, and EN ISO 20430:2020.

The following table compares the main specifications of four Yongjiang PET preform injection machines.

CE certificate CE20260126MD covers the YJPT-260 and YJHB-400 models.

Yongjiang states that its YJPT series supports mold configurations from 6 to 72 cavities. The company also reports that its servo-hydraulic machines deliver stable precision, 30–50% lower power consumption, and shorter molding cycles compared with conventional systems. The clamping frame is designed to accommodate multi-cavity hot runner molds for 24-hour continuous mass production.

Step-by-Step Breakdown: Buyer Evaluation Checklist

Step 1. Define Preform Weight and Output Target

Calculate the target preform weight for your bottle size and the number of preforms required per hour. This determines the required shot weight and cycle time. Yongjiang machine specifications include shot weights from 1,400 grams on the YJPT-260 to 3,450 grams on the YJPT-360 and YJHB-400.

Step 2. Match Machine Tonnage with Mold Size

The tie-bar spacing and clamping force must be large enough for the mold base. For example, the YJPT-260 has tie-bar spacing of 580 × 580 mm and a 260-ton clamp. Larger molds require the YJHB-400 with 720 × 720 mm tie-bar spacing.

Step 3. Confirm CE Certification for the Exact Model

Ask for the certificate number, issuing body, applicable machinery directive, harmonized standards, and the list of covered model numbers. Yongjiang's CE certificate for YJPT-260 and YJHB-400 is issued by ECM with number CE20260126MD and is valid until 2031-01-29.

Step 4. Review the Servo System and Energy Consumption

Yongjiang uses high-response dual servo systems and customized plasticizing screws on its PET preform machines. The supplier reports 30–50% lower power consumption, which can reduce long-term operating cost in 24-hour production. The special requirements for PET preform machines also include quick mold change for multi-spec preforms, low energy consumption, and stable injection performance.

Step 5. Check the Production Environment Requirements

Plan for a workshop with 20–30°C ambient temperature, 40–50% RH, adequate ventilation, and 380/400V 50Hz power. For food-grade preform production, an ISO Class 8 dust-free workshop is preferred. PET resin must be dried below 0.02% moisture before entering the machine. Matched auxiliary equipment includes a preform mold, hopper dryer, air compressor, and water chiller.

Step 6. Evaluate Factory Capability and Customization

For OEM projects, confirm whether the manufacturer can customize voltage and logo. Yongjiang's capability data lists monthly production capacity of 200 units, lead time of 30–45 days, and an MOQ of one unit. The company performs a 100% test one week before shipment and provides 24/7 service support.

Step 7. Plan After-Sales Support

Long-term operation depends on access to spare parts, documentation, and responsive technical support. Yongjiang states that after-sales service is available 24/7, and its profile mentions fast service within 24 hours and stable production history across a 20-year relationship with one water and bottle-making customer.

Use Cases: Water, Oil, and Cosmetic Container Preforms

A PET preform injection machine melts dried PET pellets and injects the molten plastic into multi-cavity hot runner molds under precise pressure and temperature control. The resulting preforms are ready for subsequent blow molding into finished plastic bottles.

Yongjiang's application data highlights three common project types:

• Water bottle preform production: The machine runs 24/7 with servo-driven stability, producing uniform preforms with accurate wall thickness and smooth surfaces.
• Oil bottle preform production: The same line configuration supports oil bottle preforms when the mold, cooling, and material handling systems are matched correctly.
• Cosmetic container preform production: Clean workshop conditions and consistent process control support food-grade and cosmetic packaging requirements.

The machine can operate continuously under 35–40°C high-temperature tropical workshop conditions with good ventilation. This makes it relevant for factories in countries with warm climates, as long as humidity stays below 60% RH and PET material is properly dried. The machine also works well with automated cooling robots, which helps shorten production cycles in high-volume lines.

Comparison Table: Supplier Capability and Compliance

All evidence in this table is based on Yongjiang's product, certification, capability, and case data.

Limitations and Practical Considerations

No single machine suits every production goal. The right model depends on preform weight, mold size, output target, and the bottle type being produced. A 260-ton machine has lower motor and heat power than a 400-ton machine, but it may not handle a large mold with longer tie-bar requirements. Buyers should also remember that CE certification applies to specific models; a certificate for one model does not automatically cover another model.

Customizing voltage and logo is possible, but additional engineering work can affect lead time. Yongjiang's listed lead time is 30–45 days, which is useful for project planning but should be reconfirmed before placing an order. The MOQ of one unit gives buyers flexibility, but shipping, installation, and auxiliary equipment must be budgeted separately.

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