Hengxing Blister Machinery (Shenzhen) Co., Ltd

Positive and negative vacuum thermoforming machines differ significantly in working principles and application fields from negative vacuum thermoforming machines. Positive-negative vacuum thermoforming machines employ a bidirectional pressure molding process with upper and lower pressures, making them suitable for processing products with deep cavities and complex geometric shapes. This process ensures uniform wall thickness distribution, guarantees product molding quality, and offers high production efficiency. In terms of material applicability, the positive-negative vacuum technology is particularly suitable for manufacturing products with high molding precision requirements, such as highly transparent packaging boxes, medical device packaging, and biodegradable materials. In contrast, negative-pressure thermoforming machines are primarily suitable for applications involving simple structures, shallow cavities, and small-batch production, offering the advantage of lower equipment investment costs. However, it should be noted that the mold manufacturing cost for positive/negative pressure thermoforming machines is typically several times higher than that of negative pressure thermoforming machines, reflecting the investment disparity arising from their superior precision forming capabilities and broader process adaptability.

Selecting the perfect thermoforming mold is more than just a purchase; it’s a strategic investment in your production efficiency. Whether you are producing PET fruit trays or PP lunch boxes, the mold's material and design directly impact your cycle time and product consistency. 1. Material Matters: Aluminum vs. Steel For high-volume production, we recommend Aircraft-grade Aluminum 6061. It offers excellent thermal conductivity, ensuring rapid cooling and shorter cycle times. For precision-heavy applications, such as Pressure Thermoforming, hardened steel inserts may be used for increased durability at the cutting edges. 2. Cooling System Design A mold is only as good as its cooling efficiency. High-end molds feature conformal cooling channels that follow the contours of the product, preventing warping and ensuring that every container—from the first to the millionth—remains dimensionally stable. 3. Plug Assist Technology For deep-draw containers, choose a mold compatible with Syntactic Foam or POM plug assists. This ensures uniform wall thickness and prevents "thin spots" at the bottom of your plastic trays. Q1: What is the typical lifespan of an aluminum thermoforming mold?A: With proper maintenance and use of high-quality alloys, a precision-engineered aluminum mold can typically handle 1 million to 5 million cycles, depending on the material being formed (e.g., PET is more abrasive than PP). Q2: Should I choose a Male or Female mold for my food trays?A: Female molds (cavity molds) are standard for food packaging as they provide a better exterior finish and more precise outer dimensions, which is critical for stacking and lid-fitting. Q3: How does the mold design affect cycle time?A: The cycle time is largely dictated by the cooling efficiency. Molds with optimized water-flow channels and high thermal conductivity materials can reduce cooling time by up to 25%, significantly boosting daily output. Q4: Can one mold be used for both PET and PLA materials?A: While physically possible, it is not recommended without adjustment. PLA (biodegradable material) has a different shrinkage rate and requires more precise temperature control compared to PET. We suggest dedicated mold tuning for different resin types. Q5: What are the benefits of using "Quick-Change" mold systems?A: Quick-change systems allow operators to switch production lines in under 30 minutes. For manufacturers handling multiple SKUs (like different sizes of fruit containers), this minimizes downtime and maximizes machine utilization.

Traditional thermoforming machines often rely on high-power furnaces, consuming excessive energy. The HX-7585 features an electric furnace power of 130 kW (actual consumption 30–50%), heating bricks use well-known German brands, combined with three-stage heating and high-precision temperature control modules, achieving constant temperature and energy-efficient operation. The temperature control module can precisely adjust temperatures for different materials (e.g., PP PLA or APET), ensuring consistent thickness and stable forming height, reducing scrap rates.

Market Background The Russian food packaging industry has seen a growing demand for high-quality disposable containers, particularly PP food boxes, due to expanding retail and catering sectors. Manufacturers face challenges in maintaining consistent product quality, energy efficiency, and fast production cycles when using conventional thermoforming machines. High scrap rates and frequent mold adjustments have been common issues, impacting overall productivity and profitability. Customer and Application Scenario Our client in Russia specializes in producing PP food containers for take-away and catering services. Their main requirements included: Material compatibility: PP sheets Production efficiency: High-speed, continuous operation Product consistency: Uniform box height and precise stacking Delivery time: Rapid deployment to meet seasonal demand The production environment involved 24-hour operation cycles with a focus on reducing manual intervention and ensuring reliable batch-to-batch quality. Our Solution To address these challenges, we supplied 1 unit of HX-7585 Positive and Negative Pressure Three-Station Plastic Thermoforming Machine with the following key technical configurations: Parameter Specification Evidence of Performance Material Compatibility PP sheets, 0.15–1.5mm Adaptable to thin and thick sheets Mold Area Max 750×850 mm / Min 400×450 mm Large-format molds enable diverse container sizes Production Efficiency 10–35 molds/min High-speed continuous production Mold Height Memory Automatic recall of first-run mold height Reduces mold adjustment time by 30+ minutes Servo Motors 1.8–7.5 kW for forming, cutting, and stacking Supports 24-hour operation Vacuum Pump 200 m³/h with large tank design Ensures consistent forming quality Chain Rail Hardness Vickers 85° Long-term wear resistance, precise sheet pulling The HX-7585's three-station design allowed heating, forming, cutting, and stacking to occur simultaneously, while automatic mold locking and servo-driven pulling systems ensured smooth, consistent operation. The high-precision temperature control module maintained optimal PP sheet forming conditions, minimizing warping or inconsistent box heights. Customer Feedback The Russian client reported: Significant reduction in manual mold adjustment time Stable, high-quality PP food boxes with uniform stacking Smooth operation across a 24-hour cycle without overheating or downtime Delivery within 45 days, meeting their seasonal production schedule They also highlighted the ease of operation and remote monitoring features, which helped their technicians quickly adapt to the new system. Conclusion The HX-7585 Positive and Negative Pressure Plastic Thermoforming Machine proved to be an effective solution for PP food container production in Russia. By addressing energy efficiency, mold adjustment complexity, and production stability, the machine enabled the client to maintain consistent product quality while achieving high-speed, low-maintenance operation. This case demonstrates the suitability of three-station automated thermoforming systems for manufacturers aiming to optimize workflow and ensure reliability in demanding food packaging applications.

With the North American food packaging industry increasingly demanding high throughput, precise forming, and sustainable materials, traditional plastic thermoforming machines face limitations in high energy consumption and complex mold adjustments. In the production of food trays, lids, and disposable containers, inaccurate mold adjustment or uneven heating can cause inconsistent product height, unstable stacking, or cutting deviations, increasing scrap rates and operational costs. The HX-7585 is a three-station positive and negative pressure fully automatic plastic thermoforming machine, integrating heating, forming, cutting, and stacking/counting functions. The machine supports various materials, including APET, PP, PC, PS, PVC, BOPS, PLA, and degradable corn starch, suitable for producing bowls, lids, boxes, electronic trays, and pharmaceutical trays. The HX-7585’s automatic mold locking and mold height memory system significantly reduces mold change time and improves production stability, addressing key pain points of conventional machines.

With the outbreak of overseas pre-packaged dishes and fresh e-commerce, customers are facing challenges such as "a wide variety of products, small order quantities, and short delivery cycles", such as the need for Roche Shrimp Modified Atmosphere Lock Fresh Boxes, Skin Shrimp Special Boxes, Rice Tofu Bowls, etc. We have equipped our customers with an intelligent suction molding machine with a fast mold changing system that can be completed within 15 minutes. Value embodiment:·Flexible production: Within a day, 5-8 different specifications of environmentally friendly meal boxes or fresh food trays can be switched for production.·Market response: Help customers establish the service capability of "on-demand customization", and even develop distinctive packaging in combination with local food culture, successfully entering the high-end supermarket supply chain.

With the global "plastic restriction" upgrade, our Guangdong customers have been looking for solutions that can produce natural antibacterial and low-carbon footprint meal boxes. Traditional vacuum forming machines often cause product breakage when processing bamboo powder fiber materials due to poor material flowability. Our equipment has successfully adapted to high proportion bamboo fiber mixed materials by optimizing the heating system and mold temperature control technology. ·Product Highlights: The produced lunch box is natural light brown in color, retaining a light bamboo fragrance and a delicate touch.·Commercial value: Help customers seize the purchasing demand for "bamboo instead of plastic" products in the European market, which not only have good physical properties (heat resistance, pressure resistance), but also can quickly degrade in natural environments. Customer testimony: "This device enables us to quickly convert upstream biodegradable materials into tableware that meets international standards, connecting the entire green industry chain.

In recent days, at the request of customers, our company has successfully produced laser drilling instead of traditional workstation drilling.It has the following advantages: 1. High precision: The laser drilling accuracy can reach ± 10 μ m, with high consistency in aperture and position, meeting the high-precision requirements of vacuum-formed products.2. Good quality of hole edges: Laser drilling holes have smooth and burr free edges, without the need for secondary deburring treatment, improving product quality by 12.3. Flexible hole type: It can process any shape or irregular hole (such as circular hole, square hole, hexagonal hole, etc.), adapting to the diverse design needs of vacuum-formed products.4. Flexible changeover: No need to change the physical mold, the hole type can be quickly switched by adjusting the punching parameters through software, suitable for the production of multi-specification vacuum-formed products. In the future, we will continue to serve our customers and make every effort to meet their needs, pursue higher quality services, and create infinite possibilities. HENGXING thermoforming machine is stable, efficient, reliable, and trustworthy.

A temperature control module is adopted, featuring high precision and fast response time. The electrical cabinet is optimally installed inside the rack to save space. The electric furnace is equipped with a safety protection device to prevent production accidents. For joint lubrication, a Proton lithium-based grease electric leak-free oil pump is used. The PLC controls the amount of grease added, ensuring no grease dripping and completely solving the hygiene and safety hazards in the production workshop. The framed appearance design highlights the product grade.