At Plastindia 2026, held from 5 to 10 February 2026, BOY and its Indian representative Karan Engineering Co. presented an advanced application using liquid silicone rubber (LSR) on a BOY 50 E injection moulding machine. The exhibition stand, located in hall 6 at corner booth B-05, attracted considerable interest from plastics processing professionals. The demonstrated application concerned the production of a seal for automotive connectors with a part weight of 0.4 g. The process used injection of liquid silicone conveyed by an electric dosing system, which enabled stable and repeatable processing of the material. Particular attention was paid to the high precision of the machine and the stability of the process when moulding LSR components, which is crucial for the production of low-weight parts with demanding dimensional tolerances.
Liquid silicone sealing application
The part presented at Plastindia 2026 is a seal for connectors used in the automotive industry. Components of this type are responsible for protecting electrical contacts against the ingress of moisture and contaminants, therefore they require high manufacturing accuracy and stable material properties. The weight of a single part was 0.4 g, which imposes high demands on the moulding process in terms of dosing, mould venting and control of cycle parameters.
In the showcased installation, liquid silicone was fed to the injection unit by an electric dosing system. This solution enables precise control of the material quantity, which is important when processing LSR, a material with low viscosity and rapid curing reaction. According to the company, the configuration used at the trade fair stand ensured a stable process and consistent quality of the produced seals.
Characteristics of the BOY 50 E injection moulding machine
The application was implemented on a BOY 50 E injection moulding machine with a clamping force of 500 kN. The machine is equipped with a cantilevered two-platen clamping unit, which is intended to support high precision of mould guiding and a compact design of the clamping system. BOY 50 E is characterised by a small installation footprint of 3.25 m². Compared to conventional machines with a three-platen clamping unit design, this configuration reduces the required production floor space.
The E series injection moulding machines are driven by a servomotor pump, enabling energy-efficient and low-noise operation with high overall drive efficiency. This solution is relevant for plants that focus both on energy costs and the acoustic comfort of production workplaces.
The machine offers a wide range of plasticising units with screw diameters from 18 to 42 mm. This allows the processing of different groups of materials, including thermoplastics, thermosets, liquid silicone (LSR) and elastomers. Such a configuration makes it possible to tailor the machine to a variety of production tasks, from small series of specialised applications to jobs with higher performance requirements.
BOY's presence on the Indian market
BOY has been active on the Indian market for many years, with particular focus on two-component liquid silicone processing for demanding applications. This applies especially to components such as connectors and sealing systems, as well as products for the medical sector and baby products, implants and household goods.
According to the manufacturer, an important element of its activities in India is an extensive service and technical support network. This infrastructure is well recognised by local plastics processors and highly valued by production plants in different regions of the country, which is relevant for investment decisions concerning the purchase of plastics processing machinery.
Reaction of Plastindia 2026 visitors
According to the company, the reaction of Plastindia 2026 visitors to the presented installation was very positive. The high level of interest in the LSR sealing application for automotive connectors and in the BOY 50 E injection moulding machine resulted in numerous discussions with representatives of plastics processors.
The manufacturer reports that due to the strong interest in its offering, in cooperation with its Indian representative Karan Engineering Co., it expects to conclude several orders in the near future as a direct result of contacts established during the trade fair.
