An apparatus and method for forming a tray is provided including a forming plate and the complementary aperture in the mandrel formed to define a space therebetween that deforms the blank into the desired shape of the tray. The space between or tolerance defined by the forming plate and the mandrel is less than the actual thickness of the tray at one or more sections and/or points on the tray, such as at the corners of the tray, in order to crush the foldable material forming the tray at the one or more sections. The crushing of the foldable material at these sections effectively removes any shape memory from the foldable material, such that the tray including the crushed sections retains the shape of the tray without the need for additional securing materials on the tray but without degrading any leak-proof functionality of the tray.

A molded product discharge device accompanies a compression-molding machine that molds a molded product. The molded product discharge device is configured to discharge the molded product from the compression-molding machine. The molded product discharge device includes a rotator configured to be horizontally rotatable, a retainer facing the rotator with a predetermined distance therebetween, a plurality of projections extending toward the retainer from a surface opposite to the retainer, in an outer circumferential portion of the rotator, aligned circumferentially around a rotary axis of the rotator at an interval larger than an external size of the molded product, and configured to capture the molded product, and a guide disposed adjacent to the outer circumferential portion of the rotator and closing a gap between the adjacent projections from outside.

A molded product discharge device accompanies a compression-molding machine that molds a molded product. The molded product discharge device is configured to discharge the molded product from the compression-molding machine. The molded product discharge device includes a rotator configured to be horizontally rotatable, a retainer facing the rotator with a predetermined distance therebetween, a plurality of projections extending toward the retainer from a surface opposite to the retainer, in an outer circumferential portion of the rotator, aligned circumferentially around a rotary axis of the rotator at an interval larger than an external size of the molded product, and configured to capture the molded product, and a guide disposed adjacent to the outer circumferential portion of the rotator and closing a gap between the adjacent projections from outside.

Provided is a coal briquette manufacturing apparatus including a material storage configured to store a plurality of materials for manufacturing coal briquette; a material mixer configured to mix the plurality of materials discharged from the material storage; a coal briquette manufacturer configured to manufacture the coal briquette by press-forming the materials mixed in the material mixer; and a conveyor provided to the material storage, the material mixer or the coal briquette manufacturer, and configured to transport the plurality of materials or the coal briquette, wherein the plurality of materials includes coal ashes, dolomite, and limestone, and a weight of the coal ashes is 70 to 80% of an entire weight of the plurality of materials.

Provided is a coal briquette manufacturing apparatus including a material storage configured to store a plurality of materials for manufacturing coal briquette; a material mixer configured to mix the plurality of materials discharged from the material storage; a coal briquette manufacturer configured to manufacture the coal briquette by press-forming the materials mixed in the material mixer; and a conveyor provided to the material storage, the material mixer or the coal briquette manufacturer, and configured to transport the plurality of materials or the coal briquette, wherein the plurality of materials includes coal ashes, dolomite, and limestone, and a weight of the coal ashes is 70 to 80% of an entire weight of the plurality of materials.

A slip casting mold is useful for producing a ceramic die cast part. The slip casting mold includes a first mold part with a first main part and a first filtration layer and comprising at least one second mold part with a second main part and a second filtration layer. The first main part is equipped with at least one first dewatering channel with at least one dewatering channel end that opens into a second dewatering channel within the second mold part or into a dewatering channel within an additional dewatering body in a casting position.

A slip casting mold is useful for producing a ceramic die cast part. The slip casting mold includes a first mold part with a first main part and a first filtration layer and comprising at least one second mold part with a second main part and a second filtration layer. The first main part is equipped with at least one first dewatering channel with at least one dewatering channel end that opens into a second dewatering channel within the second mold part or into a dewatering channel within an additional dewatering body in a casting position.

This method for manufacturing a high-density strand board enables high-density strand boards to be formed by using about the same press pressure as press pressures required to form strand boards with common densities, so that the high-density strand boards can be produced without using special facilities and equipment. A pretreatment process P2 is performed on strands 5 before pressing. The pretreatment process P2 is comprised of a first treatment process P2a and a subsequent second treatment process P2b. At least one of beating, high-frequency treatment, high-temperature high-pressure treatment, high-water pressure treatment, repeated deaeration and dehydration treatment, and chemical treatment is performed in the first treatment process P2a, and roll pressing or flat press pressing is performed in the second treatment process P2b. A strand board B with a density of 750 to 950 kg/m.sup.3 is formed by using a press pressure of 4 N/mm.sup.2 or less.

A damage evaluation device for a press-forming die includes: evaluation dies installed in a pressing device configured to press-form a metal material; and an observation device configured to observe damage behavior of a die steel material and surface coating constituting the evaluation dies. The evaluation dies include: a perforating unit configured to form a hole in the metal material; a first shearing unit configured to shear the metal material in which the hole is formed into a predetermined metal component shape; and a second shearing unit configured to separate a metal component from the metal material, and dies of the perforating unit, the first shearing unit and the second shearing unit are formed of the die steel material and have a structure that enables replacement with another die made of predetermined material and applied with predetermined surface coating treatment.

A damage evaluation device for a press-forming die includes: evaluation dies installed in a pressing device configured to press-form a metal material; and an observation device configured to observe damage behavior of a die steel material and surface coating constituting the evaluation dies. The evaluation dies include: a perforating unit configured to form a hole in the metal material; a first shearing unit configured to shear the metal material in which the hole is formed into a predetermined metal component shape; and a second shearing unit configured to separate a metal component from the metal material, and dies of the perforating unit, the first shearing unit and the second shearing unit are formed of the die steel material and have a structure that enables replacement with another die made of predetermined material and applied with predetermined surface coating treatment.