![]() There are a number of companies that offer PET robots for machines that don’t have them. This helps, but robotic machines with three servo-driven takeout stations cut cycle times easily by 40%. The latter machines can be adjusted to eject the parts while the mold is opening so that the only waiting time is for the ejectors to move back. 8 Cavities High Strength Valve System Needle Preform plastic PET Mould For oil bottle Contact me at skype:+8617858501305 Quick Details Place of Origin. Extremely fast robot speeds allow the mold open/close sequence to be as quick as those for free-drop machines. ![]() Robotic takeout or free-drop: Machines with three, four, or even six post-mold cooling stations allow removal of preforms from the mold as soon as they are cold enough that they won’t buckle (around 160 C, or 320 F). It should be adjusted to get the desired demolding temperature. Cooling time should be a minimum of 1.5 sec but can be as high as 20 sec for very thick preforms. Lisong produces more than 280 multi-cavity bottle preform moulds per year, ranging from 4 to 144 cavities. With 10 years of technology and production experience of preform mould, Lisong has become a reliable manufacturer of preform mould. This shrinkage is important to allow the preform to be easily removed when the cores move away from the cavities. Lisong is a professional preform mold supplier from China. The preform now shrinks away from the cavity and onto the core and cooling is less efficient. Very thin preforms do this a lot because with cavity channels as low as 2 mm (0.080 in.), almost half of the preform weight sticks to the cold mold walls and is already at or close to solid density by the time injection is finished.Ĭooling time: As soon as the preform is sufficiently cooled to avoid sink marks, the machine can switch over to cooling time. However, preforms already cool down as they are being injected. This difference is about 13%, and for many years we taught to move the transition or switchover point to the 13% mark of the total injection stroke. With a large mold vertical pitch distance of 60 mm, it is ideal for sports drinks, juices, edible oils and ready-to-drink teas, and provides extra room to accommodate thread diameters as high as 40 mm. Hold Time: The purpose of hold time is to supply resin that is needed to fill out the voids in preforms as they shrink from a melt density of 1.15 g/cm3 to the solid density of 1.33 g/cm3. For example, a 525 g preform with a wall thickness of 8.5 mm (0.335 in.) can be filled at 27 sec, resulting in a fill speed of 19.4 g/sec/cavity. ![]() However, thicker preforms can be filled much quicker, as it is easier for the resin to be pushed through the tool channels. Product Description YUNO MOULD, specialized in manufacturing PET Preform Moulds(PET Preform Molds) injection molding system, consists of technologists. This works well for preforms up to about 4-mm wall thickness. Germany heating elements high quality for longest mould lifetimeĭo you need any PET Preform mold? contact us to get a price.Injection time: Resin suppliers suggest a fill speed of 8 to 12 g/sec/cavity. Improved valve gate system with interchangeable and durable melt PET material sealing PET Preform mold feature: Precision temperature controlling and even heating area for hot manifold PET Preform mold Steel: PET preform mold base steel: DIN1.2311 with precision grinding machine with each plate thickness tolerance 0.015mm for a plate size 500*500*40 with HRC32 PET preform mold spare steel: DIN1.2344 in D-M-E metric dimension standard all the moving area was inserted with durable parts which is interchangeable, hardness is HRC 48-52 PET preform mold cavity and core steel: S136 stainless steel, tempered with HRC50+/-2 Screw neck slide pieces: Inserted with prehardened DIN1.2316 with HRC38 to HRC42 Tell us you need and requirement, ST can offer you a tailor made PET Preform mold solution. ST has rich decades of year’s experience of PET bottle mold & PET Preform mold making. ST PET Preform mold has advanced valve gate system and cooling system, cap mold unscrewing ejection system and extrusion blowing mold auto deflashing system ST has strong PET Preform mold design capability with four design department. We can suply moulds for all kinds of precision manufacturing needs across all materials. Annually, ST can offer international market around 150 sets of PET preform mold. Find the right provider for your wholesale pet preform mold needs. As a specialist in PET Preform mold Making, SINCERE TECH is devoted to offering our customers high quality PET Preform mold based on high quality mould steel, high quality mould design and high precision mold processing.
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