Scarf-joint structure for the paper tube of a film dispenser

A scarf-joint structure for the paper tube of a film dispenser comprising:

• a frame formed with an accommodating groove, said accommodating groove connected with a through hole;
• a film installation unit comprising a first positioning member and the second positioning member, said first positioning member and said second positioning member provided at said frame, said first positioning member and said second positioning member respectively formed with a positioning groove, said positioning groove of said first positioning member, or said positioning groove of said second positioning member provided with a first scarf-joint part;
• and
• an adjustment unit formed with an operating part and an extension part, said extension part fitted with an elastic member and a fixing member, said elastic member and said fixing member received in said accommodating groove, said elastic member having two ends respectively resisting said accommodating groove and said fixing member, said fixing member formed with a position-limiting flange and a telescopic part, said telescopic part of said fixing member inserted out of said through hole, said extension part pivotally connected with said positioning member.