Thermal insulation packing is used to ship highly temperature sensitive products like Pharmaceuticals, Sea foods, Chocolates, Meat, Wine, Cheese, Butter, Fresh Flowers, Fresh Herbs and Gourmet Meals etc. All these consumer products and innumerable others are shipped from one destination to the other locally as also globally. Preservation of these consumer goods is necessary due to the following reasons:
- To keep their food value intact. This aspect is very important. If the actual food value including shape, size and taste are not gained from a food product then consumers will not pay for it.
- In case of pharmaceutical products, chemical composition may change if those are not stored under specified temperature. Thermal insulation packing helps to preserve the chemical composition of the pharmaceutical products intact.
- Perishable products like fresh flowers and fruits that lose most of its characteristics in open air needs insulation packaging for keeping them in perfect condition.
For all these reasons thermal insulation packing is very important in delivering consumer goods from one place to another. This type of packing are manufactured by the highly proficient and knowledgeable manufacturers keeping in mind the actual purpose for which consumer goods manufacturers and suppliers need these packing material. On the other hand, availability of this packing material has enabled the consumer goods manufacturers to ramify their business behind their local areas and overseas.
Thermal insulation packing is normally manufactured with the following materials:
- Sheets made of plastic foams.
- Reflective materials also called metalized films which are actually polymer films having a thin layer of aluminum.
- Polystyrene foam or Styrofoam
- Fabricated thermal sheets mostly made of woolen threads.
Manufacturers are now mostly using reusable eco-friendly raw materials for manufacturing thermal insulation packing for reducing the cost of packing and also lessening green house effect.
The insulation packing are manufactured in such a way that loss of heat from the packed product is minimum possible, thus deterioration in product quality minimized until it reaches to the destination. Heat flows through three separate mechanism- conduction, convection and radiation. In insulation packing three aspects are strictly maintained during manufacturing process:
- The walls of the container are scientifically thickened to prevent conduction of heat.
- The walls are made of a number of surfaces, one layer over another to minimize transfer of heat through convection.
- Some of the layers, especially the uppermost and the inner most surfaces are made with metalized films having high reflective capacity. This helps in preventing transfer of heat both from outside and inside.
Thus, thermal packaging is designed to preserve the temperature inside the packing intact while minimizing transfer of heat outside. This helps a product to be preserved in perfect condition until it reaches to its final destination.