injection mould

PET preform injection mould

A.Mould Specification

Insert steel materials:
1)2316 steel from German
1, Hardness: HRC=50~52
2, HBS<=235
3.Surface:black or polish
4.Technique:hot rolled or Forged
2316 plastic mould steel characters:
1 medical carbon high chrome martensite shape stainless steel
2 high purity good performance of high mirror polish,anti-acid, anti-rust after heat treatment
3 good corrosion resistance
4 resistance for erosive attack,good stability

2) S136 steel from Sweden win hundred, Japanese Datong
1. Hardness: HRC31~35
2. Annealing: 215HB
S136 plastic mould steel characters:
1. Belong to medial carbon high chrome Martensite shape stainless steel
2. High purity , good performance of high mirror polishing, anti-acid, anti-rust after heat- treatment
3. Good corrosion resistance
4. Resistance for erosive attack
5. Low deformation rate
6. Good stability

B.Mould Features

1. Valve gate

pin-valve gate ,pneumatic drive the nozzle pin simultaneous high speed open and close action, which can effectively control the injection hole open and close actions on each cavity. Reliable seal function, smooth moving, low thermal expansion rate, long using life and also saves electric energy

2.Hot runner

hot runner system is designed and made by ourselves, it can achieve ideal and prompt heating effect for preform production, cavity with lower injection pressure to reduce wear and tear of mould parts

3. Heating system

with double heating system, it has separate temperature control mode ,the heat bar are used to heat hot-runner mainfold , small heaters supply the heating temperature for cavity nozzle continuously.

4.Cooling system

each parts including core ,cavity and valve gate has independently cooling system.

5. Heating treatment
mechanical treatment cavity and core to prolong service life ,nitrogen treatment with neck screw. with fitly operation ,guarantee Long using life over 2.0 million times of injection cycle.

C. About design
Advanced structure is designed to improve rate of finished products ,Two-step dual taper locating technology; each cavity self locked independently; off-center adjustment system make the thickness error of perform less then 0.05mm. Bottle neck is adopted International Screw thread standard, No cutting of gate is employed to reduce the labor intensity

D. Advanced Testing and Processing Equipment
Many machine tools are imported from America and Japan, such as Machine center, CNC lathers, EDM and so on. All of these increases processing precision, good interchangeability and low eccentricity ≤0.10mm (perform length≤100)

E. Maintain

1. If you stop producting or remove the mould, you should paint antirust paint on cavity, thread mouth, core to prevent mould sweat and corrosion.

2. If the mould is unuse,you should put it to dry place and paint anticorrosive oil on outer to Prevent moisture.

F. Special satisfied service

1. Juguang will send the weekly mould process report and tooling schedule each 10 days
2. Juguang will send the first testing sample for buyer's inspection and work out improvement requirements.
3. Juguang will send the mould testing video before shipment

G. Product picture

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