Abstract: A hot water bag made of a soft, flexible, rubber-like synthetic material and defining two side walls of a substantially rectangular shape and having a filling neck at a shorter side thereof, comprising a soft flexible coat seam-welded to at least one of said side walls. The hot water bag is manufactured by injection die molding process in assembled outer molds including a core; the bag body with embedded filling neck is first manufactured with a side slit for removing the die core then the pliant coat is seam welded to one side and finally the slit between the side walls is closed by welding.

Abstract: A bathing cap has a body part substantially of a polyurethane foam material. The material includes a polyalcohol component, such as polyester polyol. Chain molecules of the material are cross-linked. Surface layers of the bathing cap have closed cells. The outer face surface is provided with structured formations formed as portions with a thickness other than the thickness of the remainder of the article. The body part of the cap has a thickness less than 1 mm. A method of manufacturing the bathing cap includes supplying components of the material and mixing the same so as to form a predetermined quantity of the polyurethane foam mixture, admitting said mixture into the deepest portion of a form member and inserting into the latter an insert member so as to form a space therebetween for forming the bathing cap and a gap for flowing out a surplus material, forming the bathing cap in the above space and subsequently separating the surplus material from the main part, that is from the bathing cap itself.