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INDEX INTRODUCTION The Multitech line for any industry solution TECHNICAL INFORMATION How to choose the right series Plastic materials MTVG Series Pneumatic cylinder on plate MT inlet Wiring scheme On plate pneumatic cylinder for Multi plate Example of Hot Halves and manifolds

Easier, Faster, Better The Multitech line for any industry solution The Multicavity industry presents many production challenges such as higher speed output, higher cavitations, trusting on strong system reliability. INglass HRSow has built its knowledge on customer needs and has based its expertise nding unmatching technical solution in the injection molding industry. The Multitech line results to be: Accurate R&D tests High performance material Faster cycle time Easy maintenance Prompt service Environmentally friendly Fast colour change Reduced Energy consumption Scraps Reduction New MTF...

Technical Information

Choosing the Correct MT Nozzle Series for Your Application 2.1 MT NOZZLE SERIES MT series This is the most common series and it covers a wide range of applications. It’s available in three sizes: MT22, MT29 and MT39. The MT22 is an integral nozzle design (for details, refer to the paragraph on page 3) while the MT29 and MT39 make use of nozzles with end rings. They are available in either through to the cavity or external versions. Thermal gate (MT22-29-39) and valve gate (MTV22-29-39) solutions are available in all three sizes. A dedicated series of gate inserts with conformal cooling...

Note: • flow rate values in brackets refer to nozzle lengths greater than 105mm, • values in the table above refer to polymers with average MFI and depend on many parameters (material type, gate diameter, application, etc...)

2.2 INTEGRAL NOZZLES AND END RINGS MultiTech offers two different systems to seal the nozzle on the cavity in order to cover a wide range of applications. Nozzle with end ring This is the most common solution, which consists of an end ring screwed in the nozzle. This end ring seals the cavity and tightens the tip to the nozzle. A low thermal conductivity material is intentionally used in the end ring to guarantee good thermal insulation between nozzle and cavity. This design allows the operator to have precise thermal control of the gate. Anti-stagnation rings are available as an optional...

MultiTech offers a wide range of tips and end rings to cover all applications. Four gating methods are available: free flow, torpedo, conical and cylindrical valve gating. The best choice depends on many technical variables among which the most important are the following: material to be molded, type of application, required gate quality and expected production volume. MultiTech offers each thermal gate tip (free flow and torpedo) in three different lengths: standard (defined “A0”) and extended by 5mm and 15mm (defined “A5” and “A15”). The longer the tip, the colder the gate and easier the...

FREE FLOW Free flow is commonly used when dimensional consistency of the parts is required and molded in stress reduction is desired. Compared with torpedo and valve gating, free flow is not affected by flow defects and therefore it is suitable for pearled and metalized materials. It’s commonly used for injection on cold sub runner as it reduces the pressure loss. This solution leaves a small gate vestige on the part and therefore it is not suitable when the good gate aesthetic is a requirement. Fast cycle applications suffer from stringing and drooling problems especially when critical...

MTVG cylindrical valve gating with integral nozzle MTVG gating (“VG” stands for “Guided Valve”) features a pin permanently guided by the tip and a reduced piston stroke. Therefore the pin is constantly well aligned with the gate that benefits a reduced worn-out. The traditional end ring is not used as the cavity sealing is performed by the nozzle. This feature avoids leakage risk in case of tip unscrewing. This is a tough and robust solution suitable to mould un-filled PP, HDPE, LDPE, PS with MFI greater than 10 g/10’. The anti-stagnation ring guarantees good color change performance....

PLASTIC MATERIAL SHRINKAGE CODE SHRINKAGE % [mm/mm] Acrylonitrile butadien styrene Acrylonitrile styrene acrylate Liquid crystal polymer Polybutylene terephtalate High density polyethylene Polyether ether ketone Polyether sulphone Polyethylene terephtalate Polyoxymethylene (Acetal) Polyphenylene oxide Polyphenylene sulphide Styrene acrylonitrile Styrene butadiene Thermoplastic urethane Blend PC-ABS Blend PC-PBT Blend Polypropylene - Ethylene/propylene/diene terpolymer PP-EPDM SEBS Thermoplastic elastomer

MATERIAL TECHNICAL SPECIFICATIONS MATERIAL CODE SPECIFIC WEIGHT [g/cm³]

TECHNICAL INFORMATION MATERIAL CODE

ISOMETRIC EXPLODED VIEW Coil heater (with termocouples) seeger o-ring Tips torpedo Tips Free flow Standard Extended Bushing to optimize the change color and avoid material's leakage.

Nozzles' seats dimensions Standard Seat possibility to disassemble the coil heater from the cavity parting surface's side. For missing dimensions to look at the standard seat's drawing. Cavity characterictics: HARDENED AND TEMPERED STEEL 49-51HRc (Gate's area: for nozzles' configurations and available lenghts, look at the page 4.MT.22.1.03 and next. For standard tips it is available also a sintering material version Cavity characterictics: HARDENED AND TEMPERED STEEL 49-51HRc Cavity plates' characteristics HARDENED AND TEMPERED STEEL 30-36HRc Nozzle's body Minimum interaxis available (to...

FREE FLOW Injection A Bushing for change color and avoid material's leakage. Max melt temperature 280°C Foresee a separate cooling circuit close to the injection's point and on the plate based on the style and use. Bushing for change color and avoid material's leakage. Max melt temperature 280°C (3) For "L Seat" calculation, "A" and "E" values refer to pag. 4.MT22.1.05 (1) "Nozzle L" nominal Lenght. For a correct design of the Lenght seat, keep in touch with the HRS technical office. Pay attention! Sharp corner 0.6 ÷ 1.4 ±0.01 Gate 0.02 B (2) For a right design keep in touch with the HRS...