Provided are a super water repellent polymer hierarchical structure, a heat exchanger having super water repellency, and a manufacturing method thereof A super water repellent polymer hierarchical structure can be simply and repeatedly manufactured by using only a method for utilizing a super water repellent hierarchical structure and mechanically molding a polymer material thereon. In addition, a heat exchanger having super water repellency can be provided by providing super water repellency on the fin surface of a heat exchanger by using a dip method and vacuum drying.

Provided are a super water repellent polymer hierarchical structure, a heat exchanger having super water repellency, and a manufacturing method thereof A super water repellent polymer hierarchical structure can be simply and repeatedly manufactured by using only a method for utilizing a super water repellent hierarchical structure and mechanically molding a polymer material thereon. In addition, a heat exchanger having super water repellency can be provided by providing super water repellency on the fin surface of a heat exchanger by using a dip method and vacuum drying.

A method for production of a tubular body applying the following steps: Pressureless application of at least one first curable plastic layer made of reactive polyurethane materials with a core via a rotational molding process, Curing the at least one plastic layer, Winding at least one reinforcement layer onto the at least one first plastic layer, Pressureless application of at least one second curable plastic layer, wherein the reinforcement layer is embedded without holes between the two plastic layers, and Removal of the core after completion of the body.

Because of this, the position of the reinforcement layer 7 can be individually established and it can be ensured that the reinforcement layer will not penetrate into the first plastic layer during winding after the curing of the first plastic layer.

A method of forming an implant includes providing a preformed shell formed from at least one cured elastomeric layer. The shell includes an outer surface, an inner surface, and an opening for accessing an interior volume of the shell. The method further includes expanding the shell to an expanded state, in which the interior volume is greater than the interior volume of the shell at a time of forming the shell and forming an inner zone having at least one inner elastomeric layer on at least a portion of the inner surface of the shell, while the shell is in the expanded state, thereby forming a multi-zone shell. The method further includes reducing the interior volume of the multi-zone shell, thereby contracting the at least one inner elastomeric layer of the inner zone and causing texturing of the at least one inner elastomeric layer.

A method of forming an implant includes providing a preformed shell formed from at least one cured elastomeric layer. The shell includes an outer surface, an inner surface, and an opening for accessing an interior volume of the shell. The method further includes expanding the shell to an expanded state, in which the interior volume is greater than the interior volume of the shell at a time of forming the shell and forming an inner zone having at least one inner elastomeric layer on at least a portion of the inner surface of the shell, while the shell is in the expanded state, thereby forming a multi-zone shell. The method further includes reducing the interior volume of the multi-zone shell, thereby contracting the at least one inner elastomeric layer of the inner zone and causing texturing of the at least one inner elastomeric layer.

For manufacturing composite parts (1) having an inner hollow moulded body (2) with openings (3), which are accessible from outside, the moulded body is introduced into a moulding tool on the mould walls on which a shell layer (11) was applied. The hollow space between the moulded body (2) and the shell layer (11) is filled with a thermally insulating plastic foam (12) which is foamed in the moulding tool and bonds to the moulded body and the shell layer. After removal, a moulded body is provided, which has a qualitatively good surface formed by the shell layer. Such a composite part is preferably used for connecting thermally insulating pipes.

The present invention relates to a method for producing an elastomeric grained skin which comprises at least an elastomeric skin layer and a coating layer overlying the skin layer. The skin has at least a portion which hasa grained surface, which comprises at least one elastomeric skin layer and which has at least one coating layer overlying the skin layer. To produce the skin a coating composition is applied onto at least a portion of a mould surface, which portion is grained, to produce said coating layer; and the elastomeric skin layer is moulded at least against a back side of said coating layer to produce said portion of the elastomeric skin. In order to accent the grain texture so that it stands out more clearly and so that the visibility thereof is less dependent on the direction of the incident light and the position of the viewer use is made of a coating composition which comprises effect pigment particles contained in a transparent or translucent medium.

The present invention relates to a method for producing an elastomeric grained skin which comprises at least an elastomeric skin layer and a coating layer overlying the skin layer. The skin has at least a portion which hasa grained surface, which comprises at least one elastomeric skin layer and which has at least one coating layer overlying the skin layer. To produce the skin a coating composition is applied onto at least a portion of a mould surface, which portion is grained, to produce said coating layer; and the elastomeric skin layer is moulded at least against a back side of said coating layer to produce said portion of the elastomeric skin. In order to accent the grain texture so that it stands out more clearly and so that the visibility thereof is less dependent on the direction of the incident light and the position of the viewer use is made of a coating composition which comprises effect pigment particles contained in a transparent or translucent medium.

A method is provided for making footwear utilizing a spray-on material. The method can include spraying a spray-on fabric onto surfaces of a three dimensional last. The last can be produced using additive manufacturing techniques, such as 3D printing, based on data corresponding to dimensions and contours of a consumer's foot, and/or preselected aesthetic footwear designs. The spray-on fabric is sprayed onto the surfaces of the last and allowed to cure to form a flexible, non-woven fabric upper. The upper can be removed from the last and turned inside out. With the upper turned inside out, a sole can be joined to the fabric upper to form the footwear.

A method is provided for making footwear utilizing a spray-on material. The method can include spraying a spray-on fabric onto surfaces of a three dimensional last. The last can be produced using additive manufacturing techniques, such as 3D printing, based on data corresponding to dimensions and contours of a consumer's foot, and/or preselected aesthetic footwear designs. The spray-on fabric is sprayed onto the surfaces of the last and allowed to cure to form a flexible, non-woven fabric upper. The upper can be removed from the last and turned inside out. With the upper turned inside out, a sole can be joined to the fabric upper to form the footwear.