JPS58109272A - Method for removing polishing cloth-paper disk or sheet from polishing cloth-paper roll - Google Patents

Abstract

PURPOSE:To improve the efficiency of a polishing work by constructing a polishing cloth-paper disk or sheet to be removed simply and quickly for shortening the time of preparation for the polishing work. CONSTITUTION:A box type container 5 is used to remove a polishing cloth-paper disk 2 or sheet one by one from a its roll 4. It is provided with a space for sufficiently containing a roll 4 to be rotatable round its axis. Among side walls around the polishing cloth-paper roll 4, a side wall 10 is folded inside at an opening brim to form a folded part 8, while at the top of it, a guide piece 11 is provided. This folded part is faced to a top part 7 of a lid 6 at a fixed interval, and a drawing outlet 9 is provided for drawing out the end of the roll 4. This construction permits to shorten the time of preparation in a polishing work and improve the work efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION (Objective of the Invention) The present invention provides a method for peeling off discs or seeds from a coated abrasive roll obtained by pasting and winding a coated abrasive paper disc or sheet on a flexible carrier. It's about how to do it. - An object of the present invention is to enable the abrasive coated paper disk or sheet to be peeled off easily and quickly, thereby shortening the removal time in the polishing operation and improving the efficiency of the polishing operation.

(Prior art) A cloth abrasive disk (circular type) or a cloth abrasive sheet (made of rectangular cedar) that is conventionally used by being attached to the movable part of a rotary grinder or a vibratory grinder. is a long carrier (release paper) to protect the pressure-sensitive adhesive surface applied to the back side.
It is known that the tape is pasted onto a paper and wound into a roll.

゛This coated abrasive paper roll is used as a carrier before using the disc or sheet! Since it is necessary to remove one sheet at a time by hand, it takes a long time to remove the polishing material, and it takes a lot of time to set up the polishing process. In addition, when the disk or sheet is peeled off, the adhesive surface slips when the fingers touch the adhesive surface, resulting in a decrease in adhesive strength.

(Structure of the Invention) The present invention involves pulling out the last end of a coated abrasive paper roll from the coated abrasive roll, bending it into a mountain shape by pressing a member on the back side of the roll, and placing the disc or sheet at the bent part of the carrier. The carrier is peeled off from the back side with a small force.Examples will be described below based on the drawings.

In Figures 1IN1 to 114, the cloth abrasive paper roll 4
In this example, a coated abrasive disk 2 (circular as shown in Fig. 111) or a coated abrasive sheet 2' (rectangular as shown in Fig. 2) is placed on the surface of a flexible long carrier 1 in a convoy. Or removably pasted at arbitrary intervals so as to form a double row, and the disc 2
Alternatively, it may be continuously wound around the bobbin 3 with the sheet 2' facing inside.

The disk 2 or sheet 2' is coated with a pressure-sensitive adhesive on the opposite side to the abrasive grain surface, that is, on the back side, and is adhered to the surface of the carrier 1 by the (3) adhesive force of the adhesive. The carrier type is made of a wing material such as visible paper, synthetic 11# film, cloth, etc., and the surface is coated with a material that has the same AII effect as the adhesive on the back side of the disk 2 or sheet 2'. 2 or sheet 2' can be easily peeled off. And to make exfoliation even easier, a carrier! “Komusa,”
is smaller than the "stiffness" of the disk 2 or sheet 2'. This "stiffness" is measured by a Gurley flexibility tester. Said carrier! When the stiffness of the material is measured using a Gurley flexibility tester, the value is generally 20.
The "tightness" of the disk 2 or sheet 2' is more than 200 mg and less than 3,500 mg.

On the other hand, the force required to peel off the disk 2 or sheet 2' from the surface of the carrier l is specified in the normal adhesive force measurement method of JIS-21523, and the adhesive force measured by this measurement method is generally 10017 m - less than or equal to (The normal adhesive strength specified in JIS-21523 is
(4) Calculate the load when a coated abrasive paper with a width of 25 mm or less than 25 mm and a length of 250 mm is pressed onto a stainless steel plate, and one end of the coated abrasive paper is grasped and peeled off continuously at a speed of 300 + 20 mm/mm. , this is converted into lO-per width. ) Next, the disk 2 or sheet 2 is removed from the abrasive cloth roll 4.
An example of a device used for peeling off one sheet at a time is a box-shaped container I15. I love this device! Explaining in terms of I%, it is a chain-like chain having 9 holes in which the abrasive cloth paper roll 4 is rotatably received around its axis. - A bent part 8 is formed by bending one side wall lO facing the outer surface of the cloth paper roll 4 inward at the edge, and the tip of the bent part 8 is extended inward and inclined. A guide piece ■ is formed. Both side edges of the guide piece 11 are extended toward the end surface of the coated abrasive paper roll 4 to form a guide piece 14. 6th side $110-
Opposite side I! II6 is formed on the rim of 12, and the tip of (5) 1[6 is folded downward to form an inclined folded piece 1.
It is formed in 3. 415910 bend ms and ff1
A drawer opening 9 is provided at a predetermined interval from the tip 117 of the abrasive paper roll 6, through which the winding end of the coated abrasive paper roll 4 is drawn out.

The abrasive cloth roll 4 has its axis aligned with the side 4110 and the button 1.
The end of the coated abrasive paper roll 4 is pulled out from the drawer opening 9.
~・To peel off one disc 2 or one sheet 2' from the abrasive paper roll 4, use the carrier 1.
When the back surface of the carrier l is bent in the bend s8 and the carrier type is pulled down by folding it downward into a mountain shape as shown in Fig. 4, the carrier l is bent with a small radius of curvature at the contact part with the bend fi8. . Since the disk 2 or sheet 2' is more "stiff" than the carrier 1, only the carrier 1 is bent, and the disk 2 or sheet 2' is not bent.Therefore, the carrier 1 cannot be continuously pulled down. As a result, the carrier 1 of the disk 2 or (6) is gradually peeled off from the back surface of the sheet 2'.

At this time, the operator does not need to touch the disk 2 or the sheet 2'. As the disk 2 or sheet 2' is peeled off from the carrier 1, the disk 2 or sheet 2' gradually protrudes from the outlet 9 and is completely separated from the carrier 1.

Incidentally, the only device necessary for peeling off the disk 2 or sheet 2' is the bending part that comes into contact with the back surface of the carrier 1.
It is clear that the container need not be formed into a box-like container. In order to protect the coated abrasive paper roll 4, it is preferable to form it into a box-shaped container.

(Effects of the Invention) In the present invention, the disc or sheet is peeled off by folding the carrier pulled out from the coated abrasive roll into a mountain shape toward the back side and continuously pulling it out. The adhesive can be removed without getting wet, the adhesive surface will not get dirty, and the adhesive strength will not deteriorate.

Motion and stripping to 3 Liao (7) This has a great effect on improving the efficiency of polishing work.

[Brief explanation of drawings]

Figure 1 is a plan view of a coated abrasive disc attached to a carrier, 1
Figure 12 is a plan view of the coated abrasive paper sheet attached to the carrier;
FIG. 3 is a perspective sectional view of a coated abrasive paper roll housed in a container, and FIG. 4 is a side sectional view showing the procedure for peeling. (Explanation of symbols of main parts)! ...Carrier 2...Abrasive coated paper disk (8) Fig. 1 Fig. 2゜

Claims (1)

[Claims] In a method of sequentially peeling off discs or sheets from a roll of coated abrasive paper, which is formed by pasting a large number of coated abrasive paper discs or sheets on a carrier and winding them up, the end of the roll is pulled out from the coated abrasive roll, and the back side of the end of the roll is removed. Press the back side of the final end of the roll against a flat bent part parallel to the axis of the abrasive paper roll, bring the double bent part to the apex, and pull out the final end of the roll in a mountain shape. A method for peeling off a coated abrasive paper disk or sheet from an abrasive cloth roll.