Nowadays Spinning mills are trying to shift from 5° 57' paper cones to 4° 20' and 3° 30' paper cones. This shifting procedure has following advantages:-
The cones can carry more doff weight in the same volume
Reduction in packing cost: - As one cone carries more yarn, requirement of number of paper cones is reduced and hence overall packing cost goes down.
The 3° 30' cones are more beneficial as they are light weight cones and can carry higher doff weight. The only dis-advantage is that being less angle, slipping off may take place but it is very rate in Synthetic Spun Yarn . Same is the case with 4° 20' Paper cones. Further, the buyers still have option to reduce their cost of paper cones by intimating well in advance whether the cones after winding of yarn, will be conditioned or not. For manufacturing the cones, which are to be conditioned, a special paste (moisture repellant) is to be used. The cone manufactured with this paste, can very easily tolerate the yarn conditioning i.e. high temperature steam without any damage to the cone. However, if the paper cones where the yarn conditioning is not to be done, other ordinary quality paste, which is cheaper, can be used in manufacturing paper cones. So, one can very well economize packing cost by considering above points.