NEW MINI SCIENTIFIC ‘COMBI’ SINGLE-LAYER CAST FILM & SHEET + FILM BLOWING LINE

The NEW Labtech Mini COMBI line features a combined single system of a Mini Cast Film/Sheet unit (LMCR-150) and a Film Blowing unit (LMF-200), integrated with a Mini 16 mm Single-Screw Extruder to offer a high cost savings, occupying less space, and flexible production to meet diverse production needs at a minimal material consumption.

This COMBI line is well-suited for running small sample size, making it an ideal choice for R&D, QC, and other similar applications. And despite its compact size, this mini COMBI line have similar capabilities to larger counterparts that can handle to process all conventional polymers (e.g. PET, PE, Nylon), biodegradable polymers (e.g. PLA, TPS), and recycle materials but only with lower throughput capacity.

The entire assembly is mounted on a sturdy steel subcabinet containing all major supply cables and electric components inside the subcabinet, giving a very clean appearance with very few visible connections to the extruder.

 The entire line assembly is mounted on top of the subcabinet equipped with a sliding rail platform for an easy and convenient access to all of the major supply electronic components inside.
 Fully computerized line equipped with a user-friendly 7-inch full central LCD touchscreen unit controlling all functions like:
– Extruder Temperature & RPM
– Die Temperature
– Chill Roll Temperature and RPM
– Blower RPM
– Downstream Haul-Off Nip Roll and Wind-Up RPM

MINI CAST FILM & SHEET ATTACHMENT FEATURES

TYPE LMCR-150

The cast film/sheet attachment is conveniently set up by sliding the single-screw extruder on the linear slide carriage and connecting to the flat die using the c-clamp.
The positioning of flat die is adjustable by using the linear slider, capable of adjusting to various positions in relation to the chill roll. Additionally, the chill roll itself is capable of fine vertical adjustments to control the gap distance with the flat die allowing operators to potentially handle polymers of diverse viscosities and applications.

 The chill roll attachment is equipped with a 145 mm diameter chill roll having a width of 150 mm
 The roll is vertically adjustable so that the gap between the die and the roll can be adjusted to reduce the neck-in of the extruded melt from the die
 The chill roll is driven with a variable speed AC servo motor and is made from high-grade tool steel, which has been precision ground, hard chromed with surface roughness (Ra) of 0.01-0.03 µm, and then polished to a mirror surface
 The roll is equipped with rotary joints and cored inside for cooling/heating water, enabling efficient temperature control of the roll surface. A valve is fitted to the inlet of the roll so that the flow of the water can be individually regulated
 The rubber pressing roll can manually be positioned either off or against the chill roll. It has a handle that can be swung and securely locked into place away from or towards the roller. The position where it presses against the chill roll serves to ensure that the film is tightly wrapped around the chill roll for optimum cooling efficiency. The pressure of this rubber pressing roll is adjustable with a spring-loaded screw.
 The haul-off nip-rolls give the film/sheet a steady and even pull-off from the chill roll stack. It consists of two rubber nip-rolls, one is driven with a geared AC servo motor while the rubber pressing roll is equipped with a handle for manual opening and closing when threading the film. The nip force can be adjusted with a spring-loaded screw

I. FLAT COAT HANGER TYPE DIE

The cast film attachment is supplied with a vertically downward-pointing coat-hanger type die. It is designed to process many different polymers, producing thin films and sheets with a width of 125 mm producing max film/sheet thickness of around 1.2 mm. And it is equipped with many push-pull adjustment bolts for the lip, having a lip opening from 0.3 to 2.0 mm. The die is connected to the extruder with a c-clamp, and it is equipped with heaters that divide the die into 2 heating zones (left and right), both individually regulated with their designated temperature controllers from the onboard PLC connected to the touchscreen panel. The standard die for mini cast film is made with a max temperature of 300°C.