Construction of gliding board and method of production

Abstract

A gilding board, which means of the kinds of sporting or leisure boards for sliding on waters, snow and land, was constructed by polyethylene foam material, in three-ply or above layers of constant density or different densities as its multi-layer of bard core, agglutinate with a layer of plastic polymer graphic film on one side of the board core and bonded with high tenacity of plastic protective board on the other side. The essence of the gliding board is its particular methodology of production by mechanically adhibiting instant injection of high temperature of compound thermoplastic substance on the surface of the first layer of the board core while bonding with a layer of plastic graphic film. Thereafter, cleaving a plastic protective board or polyethylene foaming skin with the third layer of board core, by adopting heat lamination method to viscose the second layer of board core with both graphic film layer plus plastic protective board layer, in which an outer core of media foam layer is being exempted between the graphic film layer and board core, and the plastic polymer protective board to board core, as a result of simplify the production process in making the board, less resources and material to be consumed during the production that leads environmental-friendly, reducing cost to be involved in production, but provides a great performance and substantially deep-set of the structure of the board. Three-ply board core enhances the greater crash-worthiness from water surfing, snow or land gliding, with provision of better comfort and a function of high security for users by smooth surface of board on both ends.

Description

FIELD OF THE INVENTION [0001] This invention is related to gliding board, particularly means of all kinds of gliding devices for sporting and leisure purposes. The devices can be identified as surfboards, bodyboards, wakeboards, swimboards, kickboards, snow sleds, skimboards, grass-gliders, sand-gliders, etc. The unique production methods and multi-layers of board core give the advantages of simplification the manufacturing process, minimise the consumption of resources and material in production, reducing manufacturing cost, provides a better architecture of the board itself together with enhancing its steadfast of the board core for providing better safety and comfort performance for end-users. BACKGROUND OF THE INVENTION [0002] Generally, a gliding board is applied as a surfing board on waters which is formed by a single layer of polymer foam material with opened cell and low density or double layers with different densities, laminated together for performance of an inner board c...

AI Technical Summary

Benefits of technology

[0006] The concernment of the invention to the gliding boards is the architecture of the three-ply board core in which omitted the two layers of outer core. The structure of the polyethylene board core is configured by four different ways of combination of triplex polyethylene foam material. First, the three-ply board core is configured by three layers of same density and thickness, preferably in range of 3 to 6 pounds PCI with thickness between 2 mils and 18 mils, or at the same density with different thickness. Further, it is applicable by adopting a different density with the same thickness or different thickness either; preferably the top two layers of the board core would be having the same higher density than the bottom layer. Density of both top two layers will be in a range of 3 to 6 pounds PCI with thickness at around 2 mils to 15 mils, to comparison with the bottom layer of board core, which have lower density at a range of 1 to 4 pounds PCI with thickness around 10 mils to 20 mils. The remarkable improvement over the existing congeneric sports boards was the structure of the polyethylene board core enabled for directly agglutinating, without the aid of outer core of backing foam or backing sheet, to the top plastic polymer graphic. film and the bottom plastic polymer protective board mechanically. By applying of this methodology, both two layers of backing foam or backing sheet on both ends of board core will be omitted as a result of cost saving on resources consumption and production cost would be minimized, and to be more environmental-friendly.

[0007] The improved methodology of bonding the plastic polymer graphic film to the polyethylene board core was made by adopting a layer of compound thermoplastic substance, a newly refined material for supersede the traditional bonding method of heat lamination. The compound substance consists of low density polyethylene, tackifying resin and ethylene vinyl acetate copolymer, to be furnaced with high temperature of 180 to 200 degree, thereafter, to be mechanically injected on the surface of the first layer of polyethylene board core. Generally, the thickness of the thin plastic polymer graphic film is under the range of 0.01 mil to 0.5 mil and the side with reverse graphic artwork imprinted will be adhesively cleaving, by the compound thermoplastic substance, approximately 0.1 to 0.8 mil in thickness, to the side of board core. Furthermore, in which the surface with graphic imprinted will be well protected against the frictions from extrinsic impacts. Being the air-cell from the board core have been filled up by the compound thermoplastic substance thereby the integration of the plastic polymer graphic film with the polyethylene board core will be adhesively agglutinated. To ensue a better performance of tenacity of the both layers, a pair or rollers will be applied while the injection mode has been performed in between the surface of the polyethylene board core and the plastic polymer graphic film, in which a top roller consists of pattern on its surface and the plain roller at the bottom will be pressurized on the graphic film to board core for a better interlock for the prevention of the graphic film to be tear-off from the board core, and with the provision of a greater smooth graphic skin of the gilding boards.

[0008] The other invention to the gliding boards is the production process of the adhesion of plastic polymer protective board to polyethylene board core. Traditionally, from prior generic bonding method of the protective board to board core, there would be a media layer, a mezzanine closed-cell, high density of polyethylene backing foam or backing sheet, which thickness was approximately 2 mils to 6 mils, would be adhered by heat lamination method to the board core for further easier bonding with the protective board. The present invention is to omit the function of the mezzanine polyethylene backing foam as media, but to directly agglutinate the board core with the plastic polymer protective board by adopting the new methodology of dual-layer of thermoplastic polymer substance as the way for replacement of heat lamination of board core with backing foam to plastic protective board. It is a new invented method that separately applying two furnaces with high temperature around 180 to 200 degree for melting the polymer substance. These two adhesive elements are either low density polyethylene or high density polyethylene. These two layers of thermoplastic polymer substance will be injected simultaneously with same pace, on one side of the third board core. Thickness of the first layer of polymer substance will be in range of 0.1 mil to 0.5 mil and the second layer will be in range of 2 mils to 5 mils. The function of the first layer is to fill in the air cells on the surface of polyethylene board core by the polymer substance to enhance the stiff of the board core. Thereafter, the second layer of polymer substance is to agglutinate both board core with plastic polymer protective board, in which the thickness is around 0.2 mil to 0.8 mil, to perform a better bonding for the gliding boards. This method is to viscose the board core with plastic polymer protective board in a better condition that not easily for tearing from frictions and conclusion, and bonding without the aid of backing foam or backing sheet, but to be directly agglutinated, not by generic hot lamination, as a result of less production process will be made, cost saving on resources consumption and much eco-friendly to the earth.

[0009] Another invention on the polyethylene board core is applying three layers of polyethylene foam as the core of the gliding board. This improved core design is to provide a better function of board core as a cushion itself, to alleviate the impacts and hurtle from gliding in speed and to perform a better protection for users. Generally, from prior art boards, the structure of the boards were made of one layer or two layers of polyethylene foam, with lower density, approximately at two pounds PCI with 10 mils to 15 mils foam board as board's inner core, thereafter laminated with one layer of closed-cell but high density of polyethylene foam sheet, approximately at six pounds PCI with 2 mils to 6 mils thickness, by heat lamination method to bonding the outer core on both sides of the inner core, to form as an outer core for the function of protection of the inner core and further heat lamination with plastic polymer protective board and plastic polymer skin at the top. However, by means of one or two layers of inner board core was not effective for alleviation of impulse from waters and snow while gliding. Therefore, the present invention is to enhance the structure of the board core into three layers, in which the first two layers will have the same higher density than the bottom layers, to intensity the cushiony function of the polyethylene foam core. Normally the density will be around 3 to 6 pounds PCI with 2 mils to 15 mils in thickness. The bottom layer is to alleviate the impulse of the friction while gliding on land, waters or snow and to sustain the pressure from the users when lying or sitting on the top of the board gliding. Normally this layer of foam core will be lower density but in same thickness as in second layer of board core, approximately at round 1 to 4 pounds PCI with thickness at around 10 mils to 20 mils.

Problems solved by technology

However, by means of one or two layers of inner board core was not effective for alleviation of impulse from waters and snow while gliding.

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