72 cavity preform mold for the preform with 30/25 neck, equippted with balanced hot runner system with valve gate. The stripper driven by the cam roller. The weight of the preforms is 20g, Cycle time is 30 Sec with general PET screw type of injection molding machine. It could reach 11 Sec with 3 stage post cooling system. TAOYUAN provide the 72 cavity PET preform molds for Husky preform molding system, Netstal PET line.The main components of molds ( die core, die cavity and screw neck) are made by injection process, which are made of special mold steel ( Germany steel 2316) after preheating treatment in the original factory in Germany. In this way, the mold with long life service and high quality can be used for 3 million shots without any maintenance, meanwhile, the wall thickness between max. Parts and min. Part is not more than 0.05mm. We adopt 72 cavities preform mold base of 50# steel and sliding block of 718# steel. And the molds equipped with imported components including high-qualitied lubricating copper plate, Germany heaters HOTSET, Germany standard PID temperature controller. Moreover, turning center processes make sure that every parts can match well; Proper distribution of cooling water way improve productivity effect and molding cycle only takes 15 seconds( need proper water chiller, bottle design and injection machine)
PET Preform Moulds (72 Cavity 30/25 Neck Preform Mould)
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preform,Mould,Hot,Runner,72,FOR,30/25,NECK,maker,cavities
| PET Preform Mould Specification | |
| Mould name | 72 cavity preform mould for 30/25 Neck 11.5g Preform |
| Mould cavity | 72 cavity |
| Neck finish | 30/25 Neck finish |
| Preform weight | 11.5g |
| Insert materials | ASSAB FS136/Purpose made 632 |
| Mould plate | 4Cr13/P20（Preharden） |
| Hot plate | H13（Preharden） |
| Heating coil | Rotfil from Italy/Hotset from Germany |
| Copper nozzle | Beryllium bronze From Italy |
| Insulator | From USA DU PONT |
| Suitable injection molding machines | Husky, Netstal PET line, PET Master, General PET injection molding machine |
Usually, 72 cavities preform mold does use the hot runner system rather than cold runner system, so the design of hot runner system plays an important role in mold quality guarantee. Based on foreign advanced techniques and combined with domestic clients' demand, we adopt the valve gated design, in which each cavity has its own heating zone and temperature is measured by independent thermocouple. (advantages: Easily avoid some problems such as white or drawbench on bottom). Here, 72 cavities preform mold is produced automatically to reduce labor force.
72 cavities preform mold, designed and developed by our engineers, is of high precision and long life span without traditional problems. In a word, Preform wall thickness is on error of 0.05mm; Weight difference is less than 0.3g; 2-5 molds per minute; 3 million guarantee; Utmost 72 cavities in one mold.
72 Cavities Preform Mold Features
1. There are 72 cavities on the mold.
2. Electric control system with simulating stretch testing improve yield rate.
3. Adopt world advanced dipole taper localization technique, each cavity self-clamp independently, ensure mold concentricity.
4. The material of mold die core and die cavity are made of Sweden special mold steel.
5. International standard screw neck, imported nitrided steel with high hardness is of long usage.
6. Advanced hot runner design and even heating temperature make sure the high quality of plastic products.
7. Valve gated type without tail reduces labor force.
8. At least 3 million guarantee.
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| Product Name | Multiple-cavity PET preform mould |
| Core &Cavity Steel | 2316#steel, S136 stainless steel or based on customer's requirement. |
| Mould base & Standard Component | DME,HASCO,MISUMI,LKM,Self-made with P20, 3CR13, 4CR13 material etc. |
| Steel hardness: | HRC30-35 for base material. |
| HRC45-48 for core and cavity material. | |
| HRC60-62 for special parts material | |
| Plastic material | PET, PP, etc. |
| Cavity Number | 1*4, 1*6, 1*8, 1*12, 1*16, 1*24, 1*32, 1*48 etc |
| Injection System | Pneumatic Valve gate with shut off&free-cut or short tail or long tail etc |
| Ejector System | Mould slider + Stripper plate ejection |
| Cycle Time | Based on PET preform thickness |
| Tooling lead time | 30-60 Days |
| Mould life | At least 2.0million Shots |
| Quality assurance | ISO9001:2008/ CE certificate for European customers |
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