TH26259B - Abrasive pads and manufacturing methods. - Google Patents

Abstract

What is revealed is an abrasive pad with a layer of abrasive particles held together on the surface of a thin, softened resin film. The abrasive pad is created through a process of preparing a release film. A thin, softened resin film is held together on a surface with a release agent, and a layer of abrasive particles is then formed on top of this resin film. Subsequently, the resin film with the abrasive layer held onto it is removed from the release film, and the resin film with the abrasive layer is reassembled to the appropriate size to form the abrasive pad. The abrasive pad can provide higher polishing power during the polishing process while removing any orange peel texture from the surface. In other words, the abrasive pad is effective as a polishing tool that can potentially replace the fine compound polishing processes currently used in the automotive repair industry.

Claims (7)

1. Abrasive pads are made of a thin, flexible resin film (11) and an abrasive layer (13) formed on the surface of the resin film, which is characterized by the resin film (11) having a thickness between 10 and 100 micrometers, 100% M values between 98 and 1960 N/cm² (10 and 200 kgf/cm²), tensile strength between 1.96 and 8.82 kN/cm² (200 and 900 kgf/cm²), and elongation between 250 and 1,000%, and the abrasive layer (13) having abrasive particle sizes of 400 (P400) to 4,000. 2. The abrasive sheets under claim 1 are characterized as follows: the resin film (11) has a thickness of between 20 and 50 micrometers, 100%M has a value between 147 and 294 Newtons/cm² (15 and 30 kgf/cm²), the tensile strength is between 3.43 and 5.39 kilonewtons/cm² (350 and 550 kgf/cm²), and the elongation is between 600 and 800%, and the abrasive layer (13) has abrasive particles of grade 1000 (P1000) to grade 2000. 3. An abrasive pad under either claim 1 or 2 is characterized by the fact that the abrasive particle layer (13) includes a softening resin layer (14) which is placed between the abrasive particles and the adhesive layer for bonding these abrasive particles to the said resin film between the softening resin layer (14) and the said resin film (11). 4. The abrasive pads under claim 3 are characterized by the resin layer (13) having the same characteristics as that of the resin film (11). 5. Any abrasive pad under any of the claims 1 through 4 is characterized by the rear surface of such resin film (11) being further prepared with a pressure-sensitive adhesive layer (PSA) for the convenience of use of the abrasive pad by attaching such resin film (11) to the foam pad. 6. The procedure for manufacturing abrasive sheets, which are characterized by the following steps: preparation of the release film; formation of a thin, flexible resin film (11) on a substrate containing the release agent of the release film, such resin film (11) has a thickness between 10 and 100 micrometers, 100% M values between 98 and 1960 N/cm² (10 and 200 kgf/cm²), tensile strength between 1.96 and 8.82 kgN/cm² (200 and 900 kgf/cm²) and elongation between 250 and 1,000%; formation of the abrasive particle layer (13) on the top surface of the layer. The resin film (11), the abrasive layer (13) has a particle size of 400 (P400) to 4,000. The removal of the resin film with the abrasive layer (13) formed on it from the release film and the cutting of the resin film (11) with the abrasive layer (13) formed on it to the appropriate size for making abrasive sheets. 7. The procedure for the manufacture of abrasive sheets conforming to claim 6 is characterized by the following steps for the formation of the resin film (11): including the coating of the release agent surface of the release film with a polyurethane resin emulsion containing NBR, SBR or similar substances and the drying of such coating.