Raised island abrasive, lapping apparatus and method of use
First Claim
1. A flexible, continuous abrasive sheet web comprising a flexible polymeric sheet or flexible metal backing web sheet having an full web width array of raised abrasive structures, the abrasive structures comprising islands of a first structural material having a raised flat top surface, the top surface having at least a monolayer of abrasive particles or abrasive agglomerates supported in a polymeric resin, wherein the heights of all islands measured from the raised flat top surface of the abrasive coated islands to an island-side flat surface of the web backing sheet have a standard deviation in abrasive particle coated islands height of less than 0.01 mm.
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Abstract
Flexible abrasive sheet materials having annular bands of precise height flat-topped raised island structures that are coated with a mono layer of abrasive particles or abrasive agglomerates, processes for manufacture of the abrasive sheet materials, processes for using the abrasive sheeting in high speed lapping/abrading processes, and apparatus for using the abrasive sheeting are described. The process for manufacturing the abrasive sheeting provides an economical method for providing an improved configuration of abrasive sheeting that can provide precisely flat workpiece surfaces that are also highly polished.
189 Citations
26 Claims
- 1. A flexible, continuous abrasive sheet web comprising a flexible polymeric sheet or flexible metal backing web sheet having an full web width array of raised abrasive structures, the abrasive structures comprising islands of a first structural material having a raised flat top surface, the top surface having at least a monolayer of abrasive particles or abrasive agglomerates supported in a polymeric resin, wherein the heights of all islands measured from the raised flat top surface of the abrasive coated islands to an island-side flat surface of the web backing sheet have a standard deviation in abrasive particle coated islands height of less than 0.01 mm.
- 9. A flexible, continuous abrasive sheet web comprising a flexible polymeric sheet or flexible metal backing web sheet having an full web width array of raised abrasive structures, the abrasive structures comprising islands of a first structural material having a raised flat top surface, the top surface having at least a monolayer of abrasive particles or abrasive agglomerates supported in a polymeric resin, wherein the total web thickness of all islands measured from the flat top surface of the abrasive coated islands to an upper surface of the bottom support surface of the backing sheet has a standard deviation in abrasive particle coated islands thickness of less than 0.03 mm.
- 17. A flexible, continuous abrasive sheet web comprising a flexible polymeric sheet or flexible metal backing web sheet having an full web width array of raised abrasive structures, the abrasive structures comprising islands of a first structural material having a raised flat top surface, the flat top surface having at least a monolayer of abrasive particles or abrasive agglomerates supported in a polymeric resin, where the total thickness of all islands measured from the flat top surface of the abrasive coated islands to the bottom support surface of the backing sheet has a standard deviation in abrasive particle coated islands thickness of less than 80% of the average diameter of the abrasive particles or abrasive agglomerates.
Specification