The cylinder and pistons are produced by injection moulding machines, which are fed by individual granule feeding systems in different parts to be moulded determine the relevant types and Quantities of raw material to be supplied by the feeding lines.
The Scrapes are separated from the moulded parts, which are then transported in, to a control channel. A conveyor belt situated below the machine removes the scrapes.The feeding is performed manually while printing and discharging are done automatically.
The cylinders and the pistons are conveyed to the assembling by means of vibrating feeders. There the piston is automatically fitted into the cylinder and is immediately tested for tightness. The complete syringe are placed by hand in to the deep –drawing cavities of the thermoforming packing machine integrated with syringe auto feeder for sealing up the single units automatically with the medical grade paper and film. Between 50-250 sealed units (acc.to delivery demands) are packed into a card board box by hand. The boxes are closed, labeled and subsequently palletized. After an in-process storage over a few days, sterilization is carried out.
The autoclave sterilization with ethylene oxide allows previous packing of the final products ready to be delivered ex-works. Therefore the card board boxes ca be placed into the autoclave on pallets.but only after been stored under normal condition for two to three days in order to insured the sterilization effect. This minimum period is a presupposition for the bacteria to reach with the blister foil a certain to reach within the blister foil a certain degree of growth necessary for rendering them innocuous. It is recommended to design the autoclave chamber for one daily production in order to minimize quality controls because bacteriological tests are done batch-wise.
Due to the fact that ethylene oxide is inflammable, the sterilization equipments must be explosion proof and installed in a separate room. Sterilization of one batch takes about 8 hours.