Production Process Environment Impact

Production Process

The polypropylene (PP) tapes are manufactured by slitting films of PP which are produced by extrusion technique. In this process, the polypropylene granules are fed to the extruder through the hopper. Molten granules are extruded through circular die in the form of a film with required parameters.

The extruded PP film is then coded and the bubble is collapsed. The film thus formed is then slit to desired width. These tapes are stretched in orientation water bath which is at its boiling point. The PP tape, after orientation, is stabilized and then wound on bobbins.

From bobbins carrying polypropylene yarn, fabric is made using warping and yarn winding machine. The fabric is then woven on looms and finally cut to size and stitched to sacks of required dimensions. Whenever required, the sacks are printed using flexo graphic printing machine.

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Environment Impact

Positive effects Most of the woven sacks after usage are reused in primary form or after minor alterations and some are recycled. It does not pose any hazard to the environment. The reuse and recycling of woven sacks saves precious oil which is otherwise required to be consumed for meeting the demand on plastic raw materials. The consumer items made from recycled woven sacks is cheaper by 40 to 50% and this makes these products affordable to the lower strata of the society. Plastic bags are non-toxic and physiologically harmless and hence provide relatively higher degree of food safety. Plastics have good barrier properties towards moisture and gases and hence reduce organoleptic deterioration in quality. They have good chemical resistance and do not break easily. In addition, they do not rot in water and are not affected by fungus. Thus in the context of recycling they are more capable of meeting environmental stipulations and basic requirements of good package.