Abstract:
An abrasive article includes a backing having a major surface, an adhesion promoting layer overlying the major surface of the backing, and a make layer directly contacting the adhesion promoting layer. The adhesion promoting layer has a thickness of at least about 10 microns and is formed of a polar thermoplastic material, a cross-linkable polymer, or blends thereof.
Abstract:
The present invention provides a method for correcting a semi-conductive belt, the semi-conductive belt including a resin and a conductive substance, the method having grinding a geometrically defective part of the semi-conductive belt to flatten the geometrically defective part.
Abstract:
Methods of making an abrasive article. Abrasive particles are loaded to a distribution tool including a plurality of walls defining a plurality of slots. Each slot is open to a lower side of the tool. The loaded particles are distributed from the distribution tool to a major face of a backing web below the lower side and moving relative to the tool. At least a majority of the particles distributed from the tool undergo an orientation sequence in which each particle first enters one of the slots. The particle then passes partially through the slot such that a first portion is beyond the lower side and in contact with the major face, and a second portion within the slot. The sequence then includes the particle remaining in simultaneous contact with one of the walls and the major face for a dwell period while the web moves relative to the tool.
Abstract:
An improved polishing pad and process for polishing a multitude of materials is invented. The process includes steps to liberate material from the surface of the pad and in doing so form a desired surface texture for polishing, while allowing the bulk of the pad to remain solid and hence less compressible and stiffer. These material properties yield a polishing better suited for applications such as semiconductor wafer silicon dioxide, damascene tungsten metal, damascene copper polishing, and the like.
Abstract:
Disclosed is a method of applying particles to a coated backing. A first layer of particles is created over a second layer of particles on a support surface and the first layer of particles is different in at least one property from the second layer of particles. A coated backing is positioned above the first and second layer of particles. An electrostatic field is applied simultaneously to the first and second layer of particles such that the first layer of particles closer to the coated backing are preferentially attracted to the coated backing first before the second layer of particles.
Abstract:
A coated abrasive belt backing material woven from 100% high tenacity polyester staple yarns in a sateen weave is heat set and destretched to a dimensional stability warpwise of less than 6.5% elongation at 170 pounds per linear inch of width tensile, while maintaining its desired width during such heat setting and destretching, cloth finished, coated with maker, abrasive and size, cured and product finished to form endless belts having superior properties of strength, toughness, body retention, pliability and base adhesion.
Abstract:
Disclosed is a method of applying particles to a coated backing. A first layer of particles is created over a second layer of particles on a support surface and the first layer of particles is different in at least one property from the second layer of particles. A coated backing is positioned above the first and second layer of particles. An electrostatic field is applied simultaneously to the first and second layer of particles such that the first layer of particles closer to the coated backing are preferentially attracted to the coated backing first before the second layer of particles.
Abstract:
This invention encompasses abrasive articles that have a coating, typically made of at least a binder and abrasive particles, selectively removed from a portion of an exposed abrading surface of the article in order to inscribe a detectable marking on the abrasive article. Suitable coated abrasive articles include both articles that have the binder and abrasive particles sequentially coated on a backing as a make coat and deposited abrasive particles as well as articles that have the binder and abrasive particles simultaneously coated on the backing as a slurry coat. Coated abrasive articles that are particularly preferred include articles that have an exposed abrading or abrasive surface that is a textured, three-dimensional surface.
Abstract:
Disclosed is a method of applying particles to a coated backing. A first layer of particles is created over a second layer of particles on a support surface and the first layer of particles is different in at least one property from the second layer of particles. A coated backing is positioned above the first and second layer of particles. An electrostatic field is applied simultaneously to the first and second layer of particles such that the first layer of particles closer to the coated backing are preferentially attracted to the coated backing first before the second layer of particles.