Using continual innovation in technology and service, Nissei ASB works to ensure total customer satisfaction and its own growth. To this end it has developed and launched the new PF24/8 and PF12/4 moulding machines and is presenting these to Propak East Africa 2014’s attendees.
Part of the company’s 1.5-step injection stretch blow moulding machine range, the two new offerings have the potential to lead the PET bottle moulding industry with this exclusive concept. The technology’s innovative efficiency combines the best features of 1-step and 2-step for PET containers.
Features of the new machines:
Efficient energy usage
Due to increased scale of production and hybrid operation, energy cost per bottle has been reduced by 25 per cent and air consumption by per cent. Unlike wasteful 2-step systems that need to fully cool and re-heat the preform, the 1.5-step process retains most of the heat from the injection moulding process for final blowing of the bottle. The short heating oven is only necessary to partially re-heat and optimise the temperature profile of the preform. The result is less energy required for cooling and re-heating.
Resin to bottle in a small space
Preform transfer to blowing takes place inside one machine. Only 25 to 30 per cent of the production space is required. Without the need for multiple machines – a preform unscrambler, preform storage and transportation – a fraction of the floor area is required when compared to an equivalent 2-step moulding installation.
1.5-Steps optimises mould utilisation
The 1.5-Step PF moulding process is based on the principle that it takes around three times longer to injection mould and cool a preform than it does to blow the bottle.
With this in mind, the PF24-8B moulds 24 preforms with necks up to the size of 38mm and optimises their temperature before passing them to the eight-cavity blow station.
In the 12-4 configuration: 83g bottles can be moulded at up to 2 400 bottles per hour. In the 24-8 configuration: production rates of up to 9 000 bottles per hour can be achieved for a 500ml 9.8 gram water bottle
The injection unit and injection clamp utilise hydraulic operation supplied by energy efficient variable displacement pumps. All other functions, including transfer, stretch and blow mould clamping use servo motors to further reduce power consumption.
Unlike the smaller PF models, the PF24-8B is capable of being converted from its native 24-8 cavity moulding setup for up to 1.5ℓ bottles, to a 12-4 cavity setup allowing moulding of up to 5ℓ containers with 48mm neck diameters.
Perfect quality and improved efficiency
With no preform scuffing, neck damage or distortion, the product quality from a 1.5-step machine is perfect every time. And with no down-time from distorted preform necks causing stoppages at preform feed points, efficiency is improved.