and the core is 25 percent by weight or less preferably 15 percent by weight or less and more preferably 10 percent by weight or less the u201c main component u201d means a component contained in the entire pressure sensitive adhesive sheet or the entire core in an amount of for example 10 percent by weight or more and preferably 5 percent by weight or more examples of the main components constituting the pressure sensitive adhesive sheet are materials such as a base polymer constituting a pressure sensitive adhesive of the pressure sensitive adhesive layer or a resin constituting the base material the pressure sensitive adhesive sheet for use in the present invention can be any suitable one such a pressure sensitive adhesive sheet generally comprises a base material carrier or support and a pressure sensitive adhesive layer examples of materials for the base material are paper such as japanese paper and kraft paper fabrics such as cotton and spun rayon fabrics nonwoven fabrics such as polyester nonwoven fabrics and poly vinyl alcohol vinylon nonwoven fabrics and plastic resins examples of such plastic resins include cellophane polyolefin resins such as polyethylenes polypropylenes ethylene propylene copolymers blends or mixtures of polyethylene and polypropylene and ethylene vinyl acetate copolymers polyester resins such as poly ethylene terephthalate s poly vinyl chloride s acetate resins polystyrene resins such as polystyrenes and polyacrylonitriles a film or foam exhibiting rubber like elasticity can also be used as the base material according to the present invention.