Abstract: Disclosed is a method of manufacturing a polyurethane filter foam having excellent air permeability, elasticity, and restoring force. In the method of manufacturing the polyurethane filter foam, the cell size of the filter foam is made regular by controlling the pressure by adjusting the diameter of the foaming head of a foaming machine, rather than adding a cell opener, cell irregularity caused by poor dispersion of the cell opener is alleviated, and air permeability, porosity, and compression set are excellent.

Abstract: The present invention relates to a method of manufacturing radish-wrapped and radish-wrapped for sushi manufactured thereby. The method of manufacturing radish-wrapped for sushi according to the present invention makes it possible to manufacture radish-wrapped with a thin thickness which can easily wrap sushi. In addition, the radish-wrapped manufactured by the present invention can provide a crunchy texture and add umami to sushi. Furthermore, the radish-wrapped manufactured by the present invention is pickled, so it is easy to store for a long period of time, and perforations are drilled so that the peculiar smell of radish can be removed and formation of air bubbles in ingredients in sushi can be blocked, and as a result, it has an excellent effect of maintaining the taste of sushi even after a certain period of time.

Abstract: An edible food wrap for a variety of comestible is described. A peeling device is employed to produce a thin, elongated strip of a suitable edible material. The precisely cut strip can then be efficiently and completely deodorized and decolorized by soaking in a PH controlled alkaline water solution. Adding color to the strip is done preferentially with naturally occurring colors added directly to the alkaline water solution. White vinegar added at this time protects the intensity of the color added to the strip. The food wrap is then ready for use, particularly well suited for the outer covering of sushi.