Product Description
1. Preform design
With decades design and manufacture experience, YUNO mould designs not only preform with standard neck size for water bottle, carbonated drink bottle and oil bottle, also design preform of special shape responding to customers request. YUNO adopts a wide range of computer-aided engineering service from design conception to the finished products to make customer satisfied.
2. Hot runner system
YUNO series preform injection Mould/mold adopts specially designed hot runner system to achieve ideal and prompt heating effect for preform production. Lager flowing channels of such hot runner system ensures the mold to produce preform with lower injection pressure, which reduces molds each parts wear & tear and maintenance cost, and also saves electric energy.
3. Heating system
YUNO series preform mold with double heating system ensures perfect heating effect. It has separate temperature control mode: the heater bars are used to heat the molds manifold plate; the small heaters are used to supply the continuous heating temperature for cavity nozzle.
4. Cooling system
A specially designed cooling system with perfect cooling effect for each inner parts including core, cavity and valve gate system of YUNO preform injection mold.
5. Steel material
The main components of perform molds （Cavity/ Core/ Screw lip） are made of S136 material, And the mold base Material is 4CR13 stainless steel. Plate method avoids corrosion efficaciously and assures long life service of the perform molds.
6. Advanced Processing Equipment
Digital Control Lathe, EDM, jig-boring machine and high-precision grinding machine have been used on mold machining. High machining precision and fast machining speed ensure YUNO high quality molds. 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).
7. Heat treatment
After mechanical treatment, enhance steels strength and prolong mold service life. For example, we coat chrome on the mold plate surface for rustproof purpose and go on nitrogen treatment on neck part to increase its hardness. Special coatings also are available at YUNO Machinery. With right operation, PET preform mold reaches 3-5 million shots.
8. After-purchase service
Each set of mold undergoes strict mold trials before shipping from factory and attaches full set of parameter that is recorded depending on their own and sole serial number. Together with the mold, full set of spare parts will be supplied for free to keep mold normal working. In the use of the mold, YUNO provides adequate spare part to any request and YUNO service department are very willing to provide technical support immediately for any possible request in any time.
