Thermoforming is a manufacturing process used to shape plastic sheets into various custom design products. It involves heating a plastic sheet until it becomes pliable, then using a mold or a vacuum to form it into the desired custom shape.
Thermoforming and vacuum forming are both processes used to shape plastic sheets into specific forms. However, there are some differences between the two techniques:
Thermoforming is a versatile process that is widely used in industries such as packaging, automotive, aerospace, and medical. It offers advantages such as cost-effectiveness, quick turnaround times, and the ability to produce complex shapes with high precision.
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1. Process: In thermoforming, a plastic sheet is heated until it becomes pliable, and then it is pressed against a mold using pressure or a vacuum. Vacuum forming, on the other hand, relies solely on the use of a vacuum to draw the heated plastic sheet onto the mold.
2. Mold complexity: Thermoforming is typically used for more complex shapes and intricate molds, as it allows for greater detail and precision. Vacuum forming, on the other hand, is better suited for simpler shapes and molds that do not require as much detail.
3. Material thickness: Thermoforming is often used for thicker plastic sheets, typically ranging from 0.030 to 0.250 inches in thickness. Vacuum forming is more commonly used for thinner plastic sheets, typically ranging from 0.005 to 0.060 inches in thickness.
4. Production volume: Thermoforming is generally more suitable for high-volume production due to its faster cycle times and ability to handle larger sheets of plastic. Vacuum forming is better suited for low to medium volume production, as it has slower cycle times and is limited by the size of the vacuum forming machine.
5. Cost: Thermoforming typically requires more expensive equipment and molds, making it a more costly process compared to vacuum forming. Vacuum forming, on the other hand, is a more cost-effective option for smaller production runs or prototypes.
Overall, thermoforming is a more advanced and versatile process that offers greater precision and complexity, while vacuum forming is a simpler and more cost-effective option for less complex shapes and smaller production volumes.
Injection Moulding System for Pet Preform China
**Product Details:**
- **Model No.:** SZ-950A
- **Computerized:** Yes
- **Certification:** CE, ISO 9001:2008
- **Clamping Force:** 95 tons
- **Injection Pressure (PS):** 183 GPa
- **Space Between Tie Bars:** 360 x 360 mm
- **Screw Diameter:** 40 mm
- **Max Shot Weight:** 160 Tons
- **Machine Size:** 4700 x 1250 x 1850 mm
- **PLC Brand:** Siemens
- **Market:** Injection Molding Machine Market
- **After Sales Service:** Engineers available for overseas service
- **Warranty:** 12 Months
- **Trademark:** King Machine
- **Specification:** SGS / ISO / CE Approved
- **Origin:** Zhangjiagang City, China
- **HS Code:** 84771010
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**Injection Moulding System for PET Preform**
This advanced injection moulding system is designed specifically for the production of PET preforms. It features a user-friendly LCD computer control system with a large display screen, allowing for precise and efficient operation.
Key features include:
1. Hydraulic double proportional valve for improved performance
2. Hard chrome-plated high tensile strength steel tie bars for durability
3. Ample space to accommodate large molds
4. Large opening stroke for better mold access
5. Two position transducers for accurate control of clamping and injection
6. Four-stage injection with independent velocity and pressure control
7. Hydraulic mold height adjustment device for flexibility
8. Screw cold-start prevention system to enhance reliability
9. Melt decompression control for consistent quality
10. Screw back pressure control for optimal melting
11. Multiple hydraulic ejection for efficient part removal
12. Differential high-speed clamping for faster cycle times
13. Centralized lubrication system for maintenance convenience
14. Low-pressure mold protection device to prevent damage
15. Mechanical and electrical safety interlocks for operator safety
16. Oil return filter for clean hydraulic system
17. Oil tank with inner stainless steel container for enhanced durability
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**Technical Specifications:**
| Item | Unit | Data |
|------|------|------|
| Max Clamping Force | kN | 950 |
| Max Opening Force | mm | 340 |
| Space Between Tie Bars | mm | 360 × 360 |
| Mould Height (Min-Max) | mm | 135–380 |
| Max Daylight | mm | 720 |
| Ejector Force | kN | 25.4 |
| Ejector Stroke | mm | 85 |
| Ejector Quantity | – | 5 |
| Screw Diameter | mm | 30, 35, 40 |
| Screw L/D Ratio | – | 24.5, 21, 18.4 |
| Theoretical Shot Volume | cm³ | 113, 154, 201 |
| Plasticising Weight (PS) | g | 103, 140, 183 |
| Injection Pressure | MPa | 249, 183, 140 |
| Theoretical Injection Rate (PS) | g | 67.5, 91.8, 120 |
| Plasticising Capacity (PS) | g/s | 8.3, 12.5, 18 |
| Screw Torque | N·m | 510 |
| Max Screw Rotating Speed | rpm | 260 |
| Injection Stroke | mm | 160 |
| Pump Motor Power | kW | 11 |
| Pump Pressure | MPa | 16 |
| Heating Power | kW | 7.3 |
| Heating Zones | – | 4 |
| Machine Dimensions (L×W×H) | m | 4.25 × 1.2 × 1.8 |
| Net Weight | t | 3.2 |
| International Designation | – | 950-280 |
This machine is ideal for manufacturers looking for a reliable, high-performance solution in the production of PET preforms. With its advanced features and robust design, it ensures efficiency, precision, and long-term durability.