A communication system using a layering architecture that supports peer-to-peer communication between ONUs in an Ethernet-based PON. The article storage compartment may have a cooling unit associated therewith for cooling the article storage compartment. The peel-seal layer can be formed of high density polyethylene or polypropylene with a contaminant dispersed therein so that the closure can be easily removed from the container for opening. A removable tray module comprises a slide positioned at an incline between the front and back sides, configured to direct fats and break away solids to the front side of the tray. The coating films are peeled from the base resin material of the coarsely crushed products 50 by loading either the coarsely crushed products 50 or the coarsely crushed products 50 and an abrasive in the cylinder 11 from the loading mouth 12 and by conveying the loaded products in the cylinder 11 while rubbing the same by the rotation of the rotary member 20.