PANEL FOR WATER TANK HAVING HIGH STRENGTH AND CHEMICAL RESISTANCE AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A panel for a water tank and a manufacturing method thereof are provided to have a high strength and chemical resistance and to have an enhanced adhesion between a polypropylene plate and a steel plate. CONSTITUTION: The panels(100) constituting the water tank comprise a panel sheet(1) formed by attaching a polypropylene resin plate(3) and a steel plate(4); and a plurality of bonding cavities(14) formed on edges of the panel sheet. The polypropylene resin plate is formed of an inner side of the water tank and the steel plate is formed of an outer side of the water tank by bending the sheet towards the polypropylene resin plate using the cavities.