A cutting unit of a cutting apparatus includes a fixed flange that is disposed at an end portion of a spindle to support a cutting blade and has a plurality of first gas jetting passages on a periphery thereof for jetting gas radially along a cutting edge of the cutting blade, a detachable flange that sandwiches the cutting blade in cooperation with the fixed flange and has a plurality of second gas jetting passages on a periphery thereof for jetting gas radially along the cutting edge of the cutting blade, a cover covering the cutting blade, the fixed flange, and the detachable flange, and a vacuum unit provided to the cover and configured to suck dust scattered inside the cover.

A cutting unit of a cutting apparatus includes a fixed flange that is disposed at an end portion of a spindle to support a cutting blade and has a plurality of first gas jetting passages on a periphery thereof for jetting gas radially along a cutting edge of the cutting blade, a detachable flange that sandwiches the cutting blade in cooperation with the fixed flange and has a plurality of second gas jetting passages on a periphery thereof for jetting gas radially along the cutting edge of the cutting blade, a cover covering the cutting blade, the fixed flange, and the detachable flange, and a vacuum unit provided to the cover and configured to suck dust scattered inside the cover.

Disclosed are an organic binder-based coating; a composite gypsum board containing face and back cover sheets, an outside surface of the back cover sheet bearing the coating; and a method of preparing composite board where the back cover sheet contains the coating on its outer surface. The coating is formed from a composition comprising an alkaline silicate, a solid filler, and optionally, a borate. An enhancing layer can also be applied to the back cover sheet.

Disclosed are an organic binder-based coating; a composite gypsum board containing face and back cover sheets, an outside surface of the back cover sheet bearing the coating; and a method of preparing composite board where the back cover sheet contains the coating on its outer surface. The coating is formed from a composition comprising an alkaline silicate, a solid filler, and optionally, a borate. An enhancing layer can also be applied to the back cover sheet.

In-line inspection and control system to in-situ monitor an extrudate during extrusion. A light beam illuminates a line on the outside circumference of the extrudate skin recording the curvature. A master profile of the illuminated defect-free skin is recorded and compared to successive monitoring of the illuminated skin. Differences from the comparison indicate skin and/or shape defects. A real-time feedback to automatically adjust process control hardware reduces or eliminates the skin and shape defects based on the monitoring and comparison.

In-line inspection and control system to in-situ monitor an extrudate during extrusion. A light beam illuminates a line on the outside circumference of the extrudate skin recording the curvature. A master profile of the illuminated defect-free skin is recorded and compared to successive monitoring of the illuminated skin. Differences from the comparison indicate skin and/or shape defects. A real-time feedback to automatically adjust process control hardware reduces or eliminates the skin and shape defects based on the monitoring and comparison.

A block has a front face with a first surface of non-planar roughness including at least 10% and not more than 90% of the area of the front face. The front face includes a second surface that is even and generally planar, with at least 10% and not more than 90% of the area of the front face. In one example, the first surface is a split face, and the second surface is a burnished split face. In another example, the first surface is a molded face, and the second surface is burnished. Methods of making a block include molding, curing, in some implementations splitting, and then burnishing. Walls can be constructed from these blocks.

A block has a front face with a first surface of non-planar roughness including at least 10% and not more than 90% of the area of the front face. The front face includes a second surface that is even and generally planar, with at least 10% and not more than 90% of the area of the front face. In one example, the first surface is a split face, and the second surface is a burnished split face. In another example, the first surface is a molded face, and the second surface is burnished. Methods of making a block include molding, curing, in some implementations splitting, and then burnishing. Walls can be constructed from these blocks.

The present invention relates to a method for manufacturing prism-shaped panels (1), each comprising through portions (55) made of translucent material adapted to transmit light between two opposite sides of the panel. The method includes arranging a plurality of elements (5, 5′, 5″) made of translucent material in a formwork so that the main direction of development (500) of such elements is parallel to the vertical direction of development (203) of the formwork. The method includes pouring cementitious mortar into said formwork (4) so that said cementitious mortar is distributed between said elements and so as to generate, after the hardening of said cementitious mortar, a substantially prism-shaped semi-finished cementitious mortar product (2) in which said elements made of translucent material are incorporated. The method further includes extracting the semi-finished product from said formwork after the hardening of the cementitious mortar, and cutting the semi-finished product according to cutting planes orthogonal to the longitudinal direction (500) in which the elements incorporated in said semi-finished product develop, so as to obtain prism-shaped parts, each of which corresponds to one of said panels (1).

The present invention relates to a method for manufacturing prism-shaped panels (1), each comprising through portions (55) made of translucent material adapted to transmit light between two opposite sides of the panel. The method includes arranging a plurality of elements (5, 5′, 5″) made of translucent material in a formwork so that the main direction of development (500) of such elements is parallel to the vertical direction of development (203) of the formwork. The method includes pouring cementitious mortar into said formwork (4) so that said cementitious mortar is distributed between said elements and so as to generate, after the hardening of said cementitious mortar, a substantially prism-shaped semi-finished cementitious mortar product (2) in which said elements made of translucent material are incorporated. The method further includes extracting the semi-finished product from said formwork after the hardening of the cementitious mortar, and cutting the semi-finished product according to cutting planes orthogonal to the longitudinal direction (500) in which the elements incorporated in said semi-finished product develop, so as to obtain prism-shaped parts, each of which corresponds to one of said panels (1).