METHOD FOR MANUFACTURING A LIGHT-WEIGHT HEAT INSULATING BATHTUB AND A LIGHT-WEIGHT HEAT INSULATING BATHTUB THEREBY

摘要

The present invention relates to a method for manufacturing a light-weight heat insulating bathtub and to a light-weight heat insulating bathtub thereby. In particular, the preset invention relates to a manufacturing method of a bathtub, comprising a first step of forming an interior shape of the bathtub by molding a polycarbonate plate, and forming a structured layer with a rugged pattern on one side of the plate used as a bottom surface of the interior of the bathtub, a second step of applying an polycarbonate-based adhesive to the side of the structured layer with the rugged pattern and a third step of forming a soft polyurethane foam layer by foaming polyurethane onto the side to which the adhesive is applied, with the soft polyurethane foam layer configuring an outer shape of the bathtub and further including a deformation prevention frame that is provided to an outer lateral plane and extends in a vertical direction of the bathtub; and to a light-weight heat insulating bathtub manufactured by the method. Therefore, compared with conventional bathtubs having a total weight of 60 to 70kg, the light-weight bathtub of the present invention weighs much less, e.g. 15 to 20 kg, and such bathtubs are easy to carry, exhibit excellent insulation efficiency and heat insulation effects, are highly resistant to shock and scratches, present excellent durability by inhibiting interlayer separations, and minimize the defect ratio by preventing deformation after a curing process in the manufacturing procedure.