32 Cavity Hot Runner Preform Mould
32 cavity hot runner PET preform mould with standard hardness for cavity and core, Germany steel for cavity and core, high speed injection, fully automatic ejection system, filter design in order to stop waste material come into the mould cavity.
Main mould components (die core, die cavity, screw neck) are made by injection process, and the material of which originates from Sweden high-quality mould steel(HRC 45).In this way, it is no doubt that the mould can be used for 2 million shots without any mainttenance, meanwhile, the wall thickness between max.part and min.part is notmore than 0.10mm; 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).
Our mould, 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 0.10mm; weight difference is less than 0.3g; 2-5 moulds per minute; 2 million guarantee; utmost 144 cavities in one mould.

PET Preform Mould Specification |
Mould name |
32 cavity preform mould for PCO 1810 Neck 25g Preform |
Mould cavity |
32 cavity |
Neck finish |
PCO 1810 CSD Neck finish |
Preform weight |
25g |
Insert materials |
2316 stain steel from German |
Mould body |
#50 steel material |
Cycle time |
25 sec with general PET screw type of injection molding machine |
Cycle time with two stage injection system and Post cooling system |
13 sec with 3 stage post cooling system |
Hot runner design |
Balanced Hot runner with valve gate system |
Suitable injection molding machines |
Husky, Netstal PETline, PET Master, General PET injection molding machine |
Cavity Number |
22g Preform Length:94mm |
32g Preform Length:120mm |
42g Preform Length:130mm |
Dimension(mm) |
Weight(kg) |
Dimension(mm) |
Weight(kg) |
Dimension(mm) |
Weight(kg) |
4(1*4) |
500*290*430 |
550 |
500*290*445 |
600 |
500*290*455 |
6680 |
6(2*3) |
430*370*400 |
760 |
430*370*415 |
850 |
430*370*425 |
900 |
8(2*4) |
490*370*435 |
810 |
490*370*450 |
900 |
490*370*460 |
970 |
12(2*6) |
630*370*435 |
1020 |
630*370*450 |
1100 |
630*370*460 |
1180 |
12(2*8) |
750*370*480 |
1240 |
750*370*495 |
1350 |
750*370*505 |
1450 |
24(3*8) |
830*440*500 |
1880 |
830*440*515 |
1950 |
830*440*525 |
2060 |
32(4*8) |
830*580*515 |
2360 |
830*580*530 |
2250 |
830*580*545 |
2600 |
48(4*12) |
1065*580*525 |
2930 |
1065*580*540 |
3050 |
1065*580*555 |
3150 |
72(6*12) |
1140*830*560 |
4320 |
1140*830*575 |
4450 |
1140*830*580 |
|
Working Process:
- Mold Closing: The two halves of the mold, the fixed half and the moving half, are brought together by the injection molding machine. The guide pins and bushings in the mold base ensure accurate alignment of the cavities and the hot runner system.
- Injection: Molten plastic is injected into the hot runner system through the injection unit of the molding machine. The hot runner system distributes the plastic melt evenly to each of the 32 cavities via the manifold and nozzles. The pressure and flow rate of the injection are carefully controlled to ensure complete filling of the cavities without over - packing or under - filling.
- Cooling: Once the cavities are filled, cooling water is circulated through the channels in the mold base to cool the preforms. The cooling process is crucial for achieving the right degree of crystallization and dimensional stability of the plastic. The cooling time is carefully optimized to balance production efficiency and the quality of the preforms.
- Mold Opening and Ejection: After the cooling stage is complete, the mold opens, and the preforms are ejected from the cavities. This is usually done using ejector pins or other ejection mechanisms that push the preforms out of the mold. The ejected preforms are then collected and may undergo further processing, such as trimming, inspection, and packaging.
Advantages:
- High Production Efficiency: With 32 cavities, a large number of preforms can be produced in a single cycle, significantly increasing production output compared to molds with fewer cavities. The hot runner system also reduces cycle time by eliminating the need to cool and solidify the runner system, as in cold - runner molds.
- Uniform Product Quality: The even distribution of the plastic melt through the hot runner system and the precise control of the injection and cooling processes result in preforms with consistent wall thickness, dimensional accuracy, and mechanical properties. This is essential for ensuring the quality and performance of the final bottles or containers made from the preforms.
- Material Savings: The hot runner system reduces material waste because there is no need to trim and discard the runner system after each cycle, as is the case with cold - runner molds. This not only saves on material costs but also reduces environmental impact.
- Cost - Effective in the Long Run: Although the initial investment in a 32 - cavity hot runner preform mould is relatively high, the high production efficiency, low material waste, and reduced cycle time result in lower production costs per unit in the long term, making it a cost - effective choice for high - volume preform production.
Applications:
- Beverage Industry: It is widely used in the production of preforms for plastic beverage bottles, such as those for soft drinks, water, and juices. The ability to produce high - quality preforms with consistent dimensions is crucial for ensuring the proper fit and sealing of bottle caps and the overall integrity of the packaging.
- Packaging Industry: In addition to beverage bottles, 32 - cavity hot runner preform moulds are used to produce preforms for various other plastic containers, including those for food packaging, personal care products, and household chemicals. The high - volume production capability of these moulds meets the large - scale packaging needs of these industries.
- Medical Industry: Some medical - grade plastic containers and vials are also produced using 32 - cavity hot runner preform moulds. The precise control over the preform manufacturing process ensures the sterility, integrity, and quality of the medical packaging, which is critical for protecting the safety and efficacy of medical products.


