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EMM091-4 Three Components Elastomer Pouring Machine/polyurethane molding machine

1. Introduction

EMM091 series elastomer casting machine, a new kind of machine, develop on the base of  EMM087 series, has reached to the world level. EMM091series elastomer casting machine suits pours precisely two to three component PU systems,such as a prepolymer add a high melting point of the chain extender (such as MBOCA); a prepolymer plus a chain extender diols (found in MDI cast elastomer systems) or a polyol, a diisocyanate and a chain extender (one-step casting MDI, MDQ system elastomers ).

2. Applicable Viscosity

A (Polyols or prepolymer ): ~4000mpa.s (45°C-100°C)

B (MDI/MDQ or prepolymer ): ~4000mpa.s (45°C-100°C)

C (when a chain extender alcohols): ~500mpa.s (45°C)

C (when MOCA): 10~1000mpa.s(130°C)

3. Pouring output

Output: 5000-25000g/min

The pouring out will be different as result of raw materials’ density and mixing proportion.

As the same time, the standard three-component casting machine could increase additional six injection head, according to the product needs to add color, add catalyst (customers can choose according to their own needs). The casting machine is controlled by intelligent computer.

4. Performace index

4.1        Material Tanks (A,B ,Ctank)

Material: stainless steel AISI 304

The max. capacity: A,B 200L, C 60L

The safe capacity: A,B 160L, C 40L

The max pressure: 0.45MPa

The heating system: hot air circulation heating

Temperature measurement system: PT100

The max. temperature: 130°C

Temperature error: control +/- 1.5°C

Stirrer: Stainless steel anchor impeller, The maximum close to the tank wall

Stirring speed: adjustable speed,9-90rpm, scope to set in accordance with the nature of raw materials.

Windows: through a glass eyepiece observation tank.

Electronic sensors level of raw materials: min. liquid level control.

Auxiliary system: Vacuum system

               Nitrogen filling system

               Vacuum meter

               Pressure safety valve

               Artificial additives material system

               Vacuum system to draw raw materials

               Unloading systems

               Silica gel dry filtration system

Each material can is installed in a separate incubator, hot air circulation heat, can ensure the tank temperature prior + / - 1.5°C. Impeller anchor type design can ensure material fully mixing. This design can avoid some of the raw material such as: excessive heating effect.

4.2        Pipeline  

Material: PTFE/SASI strengthen stainless steel hoses

The heating system: oil heating

The max. pressure: 20 bar

The max. Temperature: 130°C

Temperature error: control +/- 1°C

These high flexibility insulation pipe can ensure the consistency of temperature in the whole pipeline.

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4.3        Metering system (A,B,C component)

Metering pump: gear pump import from Germany Barmag

The output of metering pump is designed by customer’s demands.

Filter: nets type filter, stainless steel AISI 304

Motor: converter in accordance with tachometer and motor to control the flow speed.

The measurement system and filter in ovens, insulation material below. This design method can be pressurized tank in the wrong circumstances, to maintain sustained and steady output of raw materials; and keeping the consistency of the temperature. Computer will be set to control output of the wheel pump. This control system can ensure that the output of raw materials in the setting value of + / - 0.3% .

4.4        Mixing head

     Material: high strength alloy

Speed: 600~6000 rpm/min

The heating system: independent electrical heating

Mixing system: dynamic mixed-head match with the motor

Temperature measurement system: PT100 thermal sensor

Temperature error: control +/- 1°C

Motor: electric motors, controlled by a frequency converter

EMM uniquely mixing head design has the following features: it can guarantee the accuracy of speed, and at a very low speed of the mixed quality of raw materials; so that the prepolymer does not cause pressure damage to properties. Made of special alloy mechanical seal system made the mixing head also could work in the high anti-pressure, while ensuring the reliability of mixed system. Unique design of the mixing chamber can be cleaned to ensure easy-to-use and thoroughness.

4.5 Injection head

      Material: high strength alloy

     Injection system: injection pressure independent of each other

     The heating system: independent electrical heating

Temperature measurement system: PT100 thermal sensor

Temperature error: control +/- 1°C

     Each injection pressure control is independent of each other, can be adjust alone pressure casting and recycling pressure. The loop injection pressure will be tested by the head of sensor, and with pressure adjusting device. This control method can avoid every time before pouring out some materials must be mixed and the uneven.

4.6 Color/additive head injection (at most three kinds directly added)

Material: high-strength alloy

Injection way: independent air pressure injection

Pigment injection unit (PDI) used to infuse liquid pigment (100-2000 mpa. S) into the mix casting. According to the needs of the users can provide different storage tanks and metering pump.

Additive injection unit (ADI) used for into the liquid additives and catalyst directly into the mixing chamber, note in the amount adjust on the interface, easy to use. According to the needs of the users can provide different storage tanks and metering pump. In any case the user can choose up to three kinds of additives simultaneously to join

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