In order to protect capsules from variations in surrounding temperature and humidity, capsules are packed in heat sealed food grade co-extruded multilayer poly bags and placed in a 5 or 7 ply rigid corrugated box. High density thermocol sheets and aluminium foil are also provided in corrugated boxes as and when required.
The packaging material used for capsules packaging have adequate mechanical sturdiness to withstand rough handling and also provides a good moisture barrier and heat isolation. It also protects capsules against any possible contamination.
Each box is assigned a number for identification. A product label containing various packing details such as size, color, batch no, weight, quantity and consignee etc. is also pasted on it.
In spite of the protective packaging used, care must be taken during transportation that hard capsules are not left on a loading dock or in an unattended truck for several hours during warm weather. The ideal storage conditions are relative humidity of 50% and a temperature of 20°C.
The producer recommends that our capsules be stored in the closed containers in which they are dispatched in areas where the ambient temperature is 15°C to 25°C and the relative humidity 40% to 65%.
Prolonged storage in areas outside these conditions may cause capsules to soften and lose their shape or to become difficult to separate, with the result that problems may encountered during the filling operations. In order to prevent such problems arising, it is recommended that containers of capsules are not stored for prolonged periods of time directly on the floor. They should also be stored away from radiators and direct sunlight. Storage closed to potential sources of water damage should be avoided.
If these recommended precautions for storage conditions and warehousing are observed, the hard gelatin capsules will remain in good condition.
There are many factors that contribute to efficient filling of the capsules on filling machines. Optimum conditions recommended for the filling operations are 23°C + 2°C and relative humidity of 45% to 55%. Under these conditions the capsule will maintain the recommended moisture content to avoid brittleness and retain the required dimensional stability.
A word about electro-static charge
The use of plastic containers or scoops can cause electrostatic charge to build up on the capsules and result in problems during filling. Hence it is recommended to use steel scoops or containers.