Abstract: Breathing composite sheet can be produced from a thermoplastic resin and a porous substrate, such as a non-woven fabric sheet, by extrusion-laminating technique using a specified cooling roll, the surface of which has been at least partly modified with a covering material having specified ranges of thermal conductivity and hardness properties. The extruded molten thermoplastic film carried on the porous substrate is effectively perforated at the modified surface of the cooling roll so as to give a breathing composite sheet.

Abstract: An injection apparatus of a plunger type for injecting reinforced materials such as BMC is of a single barrel type or a double barrel type having a rotatable plunger disposed in the barrel. A check valve device for preventing a back flow of the materials in a metering process is provided such that it is closed when the plunger is actuated to move axially for injection.

Abstract: An injection apparatus of a plunger type for injecting reinforced materials such as BMC is of a single barrel type or a double barrel type having a rotatable plunger disposed in the barrel. A check valve device for preventing a back flow of the materials in a metering process is provided such that it is closed when the plunger is actuated to move axially for injection.

Abstract: An injection apparatus of a plunger type for injecting reinforced materials such as BMC is of a single barrel type or a double barrel type comprising a rotatable plunger disposed in the barrel. A check valve means for preventing a back flow of the materials in a metering process is provided such that it is closed when the plunger is actuated to move axially for injection.

Abstract: In an injection molding press of the present invention, a plunger is inserted into a barrel and a material inlet is provided on the rear side of the barrel. A valve seat is provided in the inner periphery of the barrel and a valve body which can be brought into contact with the valve seat is provided on the end of the plunger. In addition, a lengthwise moving unit is aligned with the plunger and, when the plunger is moved lengthwisely, a portion having increasing diameters is brought into contact with a portion having decreasing diameters so that a material passage is opened and closed. A sleeve is engaged in the end of the barrel in such a manner that it can slide in the axial direction of the barrel and has an injection hole at one end. A lengthwise barrel-moving unit is provided on the barrel or the plunger. After a material has been stored in the barrel, the barrel is moved forward so that the material is injected from the injection hole into a mold.

Abstract: An injection apparatus of a plunger type for injecting reinforced materials such as BMC is of a single barrel type or a double barrel type comprising a rotatable plunger disposed in the barrel. A check valve means for preventing a back flow of the materials in a metering process is provided such that it is closed when the plunger is actuated to move axially for injection.

Abstract: A water dropping type irrigation pipe includes a conduit formed by peeling laminated films in a longitudinal direction; laminated side parts projected to both sides of the conduit in a form of fins and a water distribution passage formed by peeling at least one of the laminated side parts in a distribution passage pattern having a throat part which is branched from the conduit.