JPH0344453Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a method for polishing articles by pasting coated abrasive paper on one side and attaching it to the pad of a sander on the other side. Regarding the sander pad ace used.

[Conventional technology]

As shown in FIG. 2, a conventional pad face 10A of this type has coated abrasive paper 20 on it.
There is a structure comprising a skin material layer 1 using felt material as the skin material to which the sander pad is attached, and a bonding member layer 3 having a loop 23 for bonding to the hook material 22 of the sander pad face 21. An example of a pad ace with this structure is "Magic Pad Ace" manufactured by Sumitomo 3M Limited.
is commercially available.

[Problem that the invention attempts to solve]

This type of conventional pad face has the following problems. That is, during the polishing process, it is necessary to change the count of the coated abrasive paper attached to the pad face with a pressure-sensitive adhesive depending on the situation. At that time, the conventional pad ace lacks bending strength as a whole, and when the pad ace with coated abrasive paper attached is removed from the pad of the sander, the detachment angle α becomes large as shown in FIG. 3A. The Thunder Pad 1
In many cases, the 0A skin material layer 1 and the coated abrasive paper 20 peel off. For this reason, the pad face 10
A had a problem in that although the coated abrasive paper itself was reusable, it could not be reused as a whole. The purpose of the present invention is to obtain a padded face that is detachable and reusable.

[Means for solving problems]

According to the present invention, as shown in an embodiment in FIG. 1, a skin material layer 1 having affinity with a pressure-sensitive adhesive;
An auxiliary material layer 2 having a bending strength (Gurley type flexibility) of 10 to 30 gr and a joining member layer 3 having a loop material layer 23 for joining with the hook material 22 of the pad 21 of the sander are laminated in this order. A padded face 10 for a sander is provided.

[Effect]

As described above, the sander pad face 10 according to the present invention has an auxiliary material layer in the middle that has a bending strength within a certain range, so when changing the count of the coated abrasive paper 20 during the sanding operation, As shown in FIG. 3B, the detachment angle β of the coated abrasive paper 20 and the detachment angle β of the pad face 10 almost match, and as a result, separation of the coated abrasive paper 20 due to a significant difference in the detachment angles between the two is prevented. It becomes possible to do so.

〔Example〕

Hereinafter, embodiments of the pad face according to the present invention will be described. The surface material layer having an affinity for a pressure-sensitive adhesive and having a surface for pasting coated abrasive paper with a pressure-sensitive adhesive includes vinyl leather manufactured by Tokyo Shinko Leather Co., Ltd., Sunseven #26, and Bravo #4. etc. were used. As an auxiliary material layer having a bending strength (Gurley flexibility) of 10 to 30 gr,
Hard vinyl chloride or the like with a thickness of 0.5 mm to 0.8 mm manufactured by Mitsubishi Oil & Fat Corporation was used. Further, as a bonding member layer having a loop material layer for bonding to the pad of the sander, "Magicron" hard type, soft type, etc. manufactured by Kanebo Bentatsuchi Co., Ltd. were used.

The padded face of the present invention has an auxiliary material layer on the surface material layer opposite to the surface to be attached to the coated abrasive paper.
Next, the surface of the bonding member layer opposite to the loop material layer was bonded using a general-purpose adhesive.

In this case, the bonding strength between the hook material on the pad side and the loop material that connects the hook material of the pad is 500 to 800 gr when measured by a tensile test (T beer) on a 25 mm width of the sample "Magicron". It is. If the bending strength of the auxiliary material exceeds 30 gr,
When the pad face is detached from the pad of the sander, the detachment angle β becomes too small, making it difficult to release the bond between the loop material and the hook material of the bonding material. If it is less than 10 gr, the separation angle will be too large and the coated abrasive paper and the auxiliary material will separate, similar to the conventional padded face. In the pad face of the present invention, the separation angle is approximately 10 to 50 degrees, and this range is preferred.

[Effect of idea]

As explained above, the sander pad ace according to the present invention does not peel off the coated abrasive paper when it is removed from the pad of the sander, and as long as the coated abrasive paper is reusable, the pad ace can be simply attached and detached. , can be used repeatedly. That is, by preparing pad faces to which coated abrasive paper is attached for each required count of coated abrasive paper, it is possible to easily and quickly use the necessary coated abrasive paper according to the process of the polishing work, and , the effect is that the coated abrasive paper can be used without waste until the end of its life.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of a sander pad face according to the present invention. FIG. 2 is a schematic diagram showing a conventional pad face. FIG. 3A is an explanatory diagram showing a state in which a conventional padded face is detached from the pad of a sander. FIG. 3B is an explanatory diagram showing a detached state in the case of the present invention. DESCRIPTION OF SYMBOLS 1... Skin material layer, 2... Auxiliary material layer, 3... Bonding member layer, 10... Padded face, 10A... Conventional padded face, 20... Abrasive coated paper, 21...
...Thunder pad, 22...Hook material, 23...
...loop material layer, α...separation angle, β...separation angle.

Claims (1)

[Scope of utility model registration request] Skin material layer compatible with pressure sensitive adhesive, 10~
A sander pad face comprising an auxiliary material layer having a bending strength of 30gr, a bonding material layer, and a loop material layer for bonding to the hook material of the sander pad, which are laminated in this order.