A wax decal production and application system is disclosed involving a wax sheet, an indentation roller, a method of cutting the wax sheet, and a roller to apply the sheet to a surface. A thin wax sheet is extruded through drums that pattern it with indentations. A design is cut into the sheet and the extraneous material is removed. The wax decal is placed upon a surface. With the use of a roller, the indentations are crushed, collapsing onto and sticking to the surface.

In one example, a structure is provided that includes a plastic body having a unitary, single-piece construction. The plastic body further includes a substantially hollow interior, and a parting line that extends around a portion of the perimeter of the structure. The structure also includes a solid compression molded element that is integral with the plastic body. The solid compression molded element is configured and arranged such that the parting line is not connected to the solid compression molded element.

A composition includes a first layer of surfboard wax and a second layer of sunscreen. The second layer is adhered to the first layer so that the first and second layers are disposed above and below one another. The second layer includes a combination of a wax and an ultraviolet radiation absorber.

A water sports board includes a top deck forming portions of an outer surface of the water sports board; an underside forming portions of the outer surface; a set of internal baffle chamber structures disposed between the top deck and the underside, each baffle chamber structure fluidically isolated from another baffle chamber structure and including a plurality of pressurizable/inflatable baffle elements therein having hollow elongate internal passages that are fluidically coupled to one another; and a set of inflation/deflation valves fluidically coupled to the set of baffle chamber structures, wherein each inflation/deflation valve is accessible from the outer surface of the water sports board. The water sports board can also include a concavity adjustment mechanism by which concavity of the underside of the water sports board is adjustable. Essentially the entire water sports board is manufacturable by way of 3D printing.

A process and associated system for creating color effects in extrudable material, such as plastic and metal for example, are presented. Flows of first and second viscous materials of respective colors are provided and then combined in a predetermined pattern to form a stream of combined viscous material. In a first aspect, the flow rate of the first viscous material is caused to vary over time in order to vary an amount of the first viscous material in the stream. In a second aspect, which may be used alone or in combination with the first aspect, the first and second viscous materials have distinct viscosities to reduce an amount of color blending between the first color and the second color in the stream of combined viscous material. A static mixer may then be used to apply a predetermined dividing, overturning and combining motion to the stream of combined viscous material to partially mix the first viscous material and the second viscous material, such that upon exiting the static mixer, the first material of the first color and the second material of the second color form a color pattern in the stream of combined viscous material. Sheets of extrudable material may be created using such process and used in the manufacturing of many different products including for example kayaks and stand-up paddle boards.

A method of making a composite board and a product made thereby are disclosed. The method includes a lining forming step, a fiber pipe rolling step, a fiber pipe mounting step, a fiber material covering step, and a board body forming step. The product includes a lining acting as a board body, a plurality of long slots formed on the lining, a fiber pipe placed in each of long slots, a foam material mounted in each of fiber pipes, and a fiber material covering an external periphery of the lining. The fiber materials and the fiber pipes are melted and combined together by heat, thereby shortening the operating time. The fiber pipe becomes a reinforcement support structure to increase a structural strength of the composite board, thereby producing a finished product with a light weight and a strong structure.

Disclosed herein is a paddle board and a manufacturing method thereof, and in particular a paddle board and a manufacturing method thereof wherein a board body is formed of a double space sheet to accommodate air therein, thus obtaining a light structure and an easier storage and transfer, and a wedge part is formed at a lower side of a front end of a board so as to guide the current of water, thus enhancing speed feeling when in use.

An insert for a water sports board, wherein the insert includes a pre-preg flange extending outwardly from an injection molded central housing to provide enhance structural properties of the insert, as well as enhanced intermediate bonding between the injection molded central housing and a surface polymer. The pre-preg flange further improves the strength to weight ratio when compared to conventional inserts.

A method of forming a fin configured for use with a water sports board. The method includes providing a mold having a mold cavity and first and second insert pre-preg sheets each including structural strands respectively bonded by first and second resin materials. The method further includes placing the insert pre-preg sheets within the mold cavity. The method further includes injecting a third resin material under pressure into the mold cavity between the first insert pre-preg sheet and the second insert pre-preg sheet to urge the first insert pre-preg sheet and the second insert pre-preg sheet away from each other and towards respective ones of the pair of mold cavity faces, and dispose the third resin material between the first insert pre-preg sheet and the second insert pre-preg sheet to space at least a portion of the first insert pre-preg sheet from the second insert pre-preg sheet.

A process and associated system for creating color effects using extrudable material, such as plastic and metal for example, are presented. Flows of first and second viscous materials of respective colors are provided and then combined in a predetermined pattern to form a stream of combined viscous material. In a first aspect, the flow rate of the first viscous material is caused to vary over time in order to vary an amount of the first viscous material in the stream. In a second aspect, which may be used alone or in combination with the first aspect, the first and second viscous materials have distinct viscosities to reduce an amount of color blending between the first color and the second color in the stream of combined viscous material. A static mixer may then be used to apply a predetermined dividing, overturning and combining motion to the stream of combined viscous material to partially mix the first viscous material and the second viscous material, such that upon exiting the static mixer, the first material of the first color and the second material of the second color form a color pattern in the stream of combined viscous material. Sheets of extrudable material may be created using such process and used in the manufacturing of many different products including for example kayaks and stand-up paddle boards.