According to ITTF handbook:
Source:
http://www.ittf.com/ittf_handbook/hb.asp?s_number=2&
2.04.04 The covering material shall extend up to but not beyond the limits of the blade,
except that the part nearest the handle and gripped by the fingers may be left uncovered or covered with any material.
即係話最近手柄的地方可以無膠皮遮蓋
