High Precision Automatic Liquid Silicone Injection Moulding Machine For Baby Bottle

Advantages of liquid silicone materials

1. High and low temperature resistance: the adaptive temperature range of silica gel is -40~230 degrees, can be refrigerated (ice cream mold), can be microwave (silica gel fresh bag, lunch box, etc.).Flexibility: this is also a feature of the raw material itself, the silicone products produced can be easily folded, stretched, a second rebound, not easy to deformation.
3 easy to clean: this kind of product surface smooth, feel comfortable, was not easy to stain, usually after using water rinse can be clean.4 wear resistance: the mouse pad and the buttons of the remote control are made of silica gel. It seems that they have never been worn out. At most, the patterns on them can't be seen.5 long life: its chemical properties are stable, not burning, not water absorption, not conductive, fully combined with the above characteristics, can be concluded that the average service life of silicone products are very long, 6 natural environmental protection: silicon is a natural material in nature, non-toxic harmless

Machine Model

The key points for LSR to achieve precision injection molding are as follows:
(1) full mixing of liquid silica gel
➀ accurate mixture ratio: the LSR two-component materials A and B, in front of the injection molding, must, in accordance with the exact 1:1 mix, if it is colored liquid silicone products, also must be precise control paste ratio.
➁ mixer, static mixer is the key parts of injection molding, A, B glue only after static mixer mixing adequately, can ensure completely vulcanization molding liquid silicone injected into the mold.



(2) sealing and temperature control of injection molding machine parts
➀ attributed to LSR low viscosity, the reverse flow of materials and glue leakage, must to seal screw;
➀ because LSR molding process of mould is heated, in order to prevent LSR curing, can adopt the structure of the water-cooled nozzle to keep the temperature low enough.



(3) finished product control during injection molding
➀ parting line: consider the location of the parting line and precision in advance, help to avoid air entrainment and welding, to avoid flash;
➁ contraction: although LSR no shrinkage in injection molding, but due to its high thermal expansion coefficient, usually after stripping, cooling the contraction of 2% ~ 3%;
➂ injection gate location: need to consider the actual product shrinkage;
➃ vacuum: when designing die line to ensure that the mold closed, vacuum pump through mould switch the following fixture will all cavity vacuum;
➄ demoulding: generally USES the fractionating column plate and ejector pin and the air ejector demoulding technology, or a manual release.
➅ mold temperature: LSR is in heating vulcanization molding, must control the mold temperature is uniformly distributed.The temperature difference is controlled at +/-10℃.