Stretch film wrapping manipulation tool, stretch film wrapping apparatus, and stretch film

Abstract

There is provided a stretch film wrapping manipulation tool in which a core body, which is a bar-like member or a cylindrical shaft-like member, is inserted into a roll body of the stretch film in a cylindrical shape and a pair of grippers are provided on opposite end sides of the core body to be gripped by the hands of a user. A coupling portion for connecting the core body and the gripper is provided on the opposite ends of the core body. An attaching/detaching mechanism is arranged between at least one of the grippers of the pair and the coupling portion to freely attach and detach the gripper and the coupling portion. Thus, the stretch film can be mounted on the roll body R in a very simple manner. Further, the gripper can be held by the palm and the finger tips are made free. Thus, the tension of the stretch film can be fine-tuned.

1 . A stretch film wrapping manipulation tool for use with a bar-like member or a cylindrical shaft-like member inserted into a stretch film in a cylindrical shape, the stretch film wrapping manipulation tool comprising:
 a core body, which is the bar-like member or the cylindrical shaft-like member, inserted into a roll body of the stretch film in a cylindrical shape;   a pair of grippers attached to opposite ends of the core body and held by hands of a user;   a coupling portion provided on the opposite ends of the core body and connecting the core body and the gripper; and   an attaching/detaching mechanism arranged between at least one of the grippers of the pair and the coupling portion and removably attaching the gripper and the coupling portion.   
     
     
         2 . The stretch film wrapping manipulation tool according to  claim 1 , wherein the gripper has an outer diameter being coverable with a palm. 
     
     
         3 . The stretch film wrapping manipulation tool according to  claim 1 , further comprising a rotation mechanism arranged between at least one of the grippers of the pair and the coupling portion and holding the gripper and the coupling portion in a relatively rotatable manner. 
     
     
         4 . The stretch film wrapping manipulation tool according to  claim 3 , wherein both the attaching/detaching mechanism and the rotation mechanism are arranged in at least one of the grippers of the pair. 
     
     
         5 . The stretch film wrapping manipulation tool according to  claim 1 , wherein the attaching/detaching mechanism includes:
 an extended portion arranged in one of the gripper and the coupling portion and extending in the diameter direction of the stretch film;   an insertion opening arranged in the other one of the gripper and the coupling portion and into which the extended portion is inserted; and   an insertion direction engaging step portion being continuous circumferentially behind the insertion opening in an insertion direction and engaged with the extended portion in the insertion direction by causing a relative rotation between the extended portion and the insertion opening.   
     
     
         6 . The stretch film wrapping manipulation tool according to  claim 5 , wherein
 the attaching/detaching mechanism has a counter insertion direction recessed portion being continuous to the insertion direction engaging step portion in an opposite direction of the insertion direction and engaged with the extended portion circumferentially by accommodating the extended portion.   
     
     
         7 . The stretch film wrapping manipulation tool according to  claim 6 , wherein
 the attaching/detaching mechanism has an urging member causing the extended portion accommodated in the counter insertion direction recessed portion to be urged to a bottom side of the counter insertion direction recessed portion.   
     
     
         8 . The stretch film wrapping manipulation tool according to  claim 1 , further comprising a hand grip belt which is arranged in at least one of the grippers of the pair and into which a hand can be inserted. 
     
     
         9 . The stretch film wrapping manipulation tool according to  claim 1 , wherein
 the gripper has a maximum thickness of 40 mm or less and 3 mm or more along a longitudinal direction of the stretch film and a maximum size of 100 mm or less and 30 mm or more in the diameter direction of the stretch film.   
     
     
         10 . The stretch film wrapping manipulation tool according  claim 1 , wherein the core body has a maximum outer diameter of 65 mm or less. 
     
     
         11 . The stretch film wrapping manipulation tool according to  claim 1 , further comprising a cylindrical core body cover into which the core body is inserted and which is arranged to be relatively rotatable with respect to the core body. 
     
     
         12 . A stretch film wrapping apparatus comprising the stretch film wrapping manipulation tool according to  claim 1 ; and the stretch film. 
     
     
         13 . The stretch film wrapping apparatus according to  claim 12 , wherein the stretch film has an inner diameter of 75 mm or less. 
     
     
         14 . The stretch film wrapping apparatus according to  claim 12 , wherein the stretch film has a core-less structure without a paper core located on an inner peripheral surface. 
     
     
         15 . A stretch film mounted on the stretch film wrapping manipulation tool according to  claim 12 . 
     
     
         16 . The stretch film according to  claim 15 , wherein the stretch film has an inner diameter of 75 mm or less. 
     
     
         17 . The stretch film according to  claim 15 , wherein the stretch film has a core-less structure without a paper core located on an inner peripheral surface.