Explore our high-performance tooling, positive/negative thermoforming units, and multi-layer polymer extrusion systems designed for continuous industrial throughput.
Wenzhou Yicai Machinery Technology Co., LTD. (Formerly Ruian Seven Star Machinery)
The machinery industry is a highly sophisticated manufacturing domain characterized by technology-intensive requirements. High-performance mechanical production requires advanced engineering support, covering precise tool design, modern material processing, automation control systems, and mechanical-thermal integration.
As a leading developer, Wenzhou Yicai Machinery Technology Co., LTD. specializes in manufacturing heavy-duty thermoforming equipment, curved offset printing units, and plastic extrusion machinery. By strictly applying modern raw material processing, robotic structural welding, and multi-stage control calibration, we ensure that every machine delivers long-lasting production life, lower energy consumption, and high repeatability.
Eight pillars underpinning our technological leadership and global client satisfaction
We configure production systems based on customer requirements, including custom logo design, color preferences, and key components selection.
Consistently advancing from manual machinery to semi-automatic systems, and now to fully automated intelligent production lines.
Applying modern production technologies and strict quality control standards to deliver machinery with high stability and performance.
Our sales team provides technical parameters, materials compatibility analysis, and custom layouts before you make an investment.
Serving multiple global markets, offering logistics, documentation, and operational support across international borders.
Partnering with global brands for electrical components, hydraulic systems, and steel raw materials to minimize operational risks.
Our R&D engineers, service technicians, and sales consultants possess deep industry experience to support your growth.
Providing responsive technical support, commissioning guides, and replacement parts to keep your production runs continuous.
Complete production equipment catering to thermoforming, extrusion, and container decoration
Our thermoforming equipment utilizes positive and negative pressure controls to produce precise plastic cups, lids, food trays, and containers. Equipped with multi-zone heating systems, servo plug assists, and in-mold trimming, these machines guarantee stable walls and fast cycle rates for materials like PP, PS, PET, and PLA.
Designed for multi-layer co-extrusion or single-layer sheet production, our extruders provide high shear stability, precise melt filtration, and uniform thickness controls. These sheets are perfectly pre-conditioned for high-speed downstream thermoforming lines.
High-speed curved offset printers ranging from 4-color to 8-color configurations. Utilizing UV curing technologies, servo index positioning, and automated stacking, these printers process thousands of cups per hour with high registration accuracy.
The global packaging industry is undergoing rapid changes driven by changing environmental regulations, material science developments, and consumer demand. In response, modern manufacturing facilities are shifting from traditional standalone injection molding units to integrated, high-speed sheet extrusion and inline thermoforming systems. This change is primary driven by the need for faster cycle times, thinner walls, and lower overall weight per part.
Wenzhou Yicai Machinery Technology Co., LTD. has helped lead this shift. Originally established as Ruian Seven Star Machinery in 2010, the company restructured in 2022 to specialize in high-efficiency, multi-station thermoforming lines, multi-layer sheet extruders, and automated offset cup printing systems. This shift helps high-volume packaging manufacturers minimize raw material waste while maintaining fast production cycles.
Modern polymer processing relies heavily on three core technological trends:
Modern high-volume thermoforming requires precise control over heating, forming, cutting, and stacking. Wenzhou Yicai's multi-station positive and negative pressure thermoforming machines integrate these functions into a single automated line.
1. Temperature Management: Sheet heating uses ceramic heaters with independent PID micro-zone controllers. This setup ensures even sheet temperatures within ±1°C, which is essential for uniform material distribution when forming deep-draw cups.
2. Clamping and Plug Assist Dynamics: High-speed forming uses a servo-driven toggle clamping system. This design provides high clamping force to prevent parting line flash, while servo-controlled plug assists help pre-distribute the hot polymer sheet into deep mold cavities before compressed air is applied.
3. In-Mold Cutting and Trimming: Thermal shrinkage in materials like PP and PET can affect product dimensions. In-mold trimming cuts the formed parts before they cool completely, ensuring consistent flange widths and clean edges across all cavities.
Enterprise buyers evaluate machinery investments using a Total Cost of Ownership (TCO) model. This calculation considers:
Adding branding and labels to round plastic cups, tubs, and buckets requires specialized post-forming equipment. Dry offset printing remains the most economical method for high-volume runs.
Yicai's 6-color and 8-color curved offset printing machines print onto pre-formed containers at high speeds. The process relies on:
To assist procurement teams, the table below outlines processing parameters for common thermoforming polymers:
| Polymer Type | Forming Temp Range (°C) | Mold Shrinkage (%) | Pre-drying Needed? | Common Applications |
|---|---|---|---|---|
| Polypropylene (PP) | 150 - 175 | 1.5 - 2.2 | No | Microwavable trays, hot drink cups, dairy tubs |
| Amorphous PET (APET) | 125 - 145 | 0.4 - 0.7 | Yes (4-6 hrs @ 60°C) | Clamshells, clear beverage cups, salad bowls |
| Polystyrene (PS / HIPS) | 130 - 160 | 0.5 - 0.8 | No | Yogurt cups, disposable plates, egg trays |
| Polylactic Acid (PLA) | 90 - 115 | 0.3 - 0.5 | Yes (8 hrs @ 45°C) | Eco-friendly cups, deli boxes, compostable lids |
Industrial machinery requires reliable post-installation support to maintain uptime. Wenzhou Yicai supports its global installations through a structured technical service plan:
A look inside our manufacturing facility in Zhejiang Province, featuring modern machining centers and assembly lines
Our machinery produces packaging containers for food service, retail, and industrial applications
Answers to common engineering and procurement questions about plastic processing machinery
Positive pressure uses compressed air (up to 6 bar) from the plug side to force the heated polymer sheet into the mold cavity. Negative pressure relies on a vacuum drawn from within the mold cavity. Combining both positive and negative pressure provides higher forming speeds, sharper corner definition, and more consistent wall thickness, especially in deep-draw containers.
Our extrusion lines feature coat-hanger type T-dies that optimize polymer melt distribution. Precision calendar rollers, paired with online thickness sensors and feedback loops, automatically adjust the die lip gap to maintain sheet thickness uniformity across the entire width.
Yes. Processing Polylactic Acid (PLA) requires precise heating profiles and mold temperature controls to prevent the sheet from sagging or crystallizing prematurely. Our thermoforming machines feature multi-zone heaters and oil-heated or water-cooled mold options to manage these processing conditions.
Dry offset printing is faster (up to 400 pieces per minute) and has a lower per-unit cost compared to pressure-sensitive labeling. It applies multiple ink layers to a rubber blanket and transfers them to the container in a single pass, which helps prevent label wrinkling on tapered walls.
Discover our multi-station pressure thermoformers, high-output extruders, and inline printing systems.
Our engineering team is ready to discuss your production requirements, material trials, and custom layout designs.
Whether you need to configure a multi-layer sheet line or update your high-speed printing capabilities, we can assist.
Yicai Machinery
