PURPOSE: To protect and temporarily attach release tapes up to use time, and smoothly separate at separating time by constituting a separation processing layer arranged on a base material out of a specific silicon type separation processing agent, setting the separating force not more than a specific value, and setting shearing adhesive strength not less than a specific value.

CONSTITUTION: In release tapes E for a disposable paper diaper, a separation processing layer arranged on a base material is composed of a silicon type separation processing agent containing three-dimensionally formed organopolysiloxane by 10 to 40wt.%, and separating force to be defined next is set not more than 200g/25mm, and shearing adhesive strength is set not less than 1000g/25mm. Here, the separating force to be defined is 180° separating) adhesive strength measured in 300mm/min by a tesilon type universal testing machine within 3 minutes after sticking fastener tapes F by a round trip of a 2 Kg roller onto the separation processing layer of respective specimens (a length 70mm × a width 50 mm) fixed on a stainless plate. The shearing adhesive strength is the one similarly measured by pulling them in the shearing direction.