US20020006754A1 - Composite bodies, in particular sailing or surfboards - Google Patents
Composite bodies, in particular sailing or surfboards Download PDFInfo
- Publication number
- US20020006754A1 US20020006754A1 US09/766,146 US76614601A US2002006754A1 US 20020006754 A1 US20020006754 A1 US 20020006754A1 US 76614601 A US76614601 A US 76614601A US 2002006754 A1 US2002006754 A1 US 2002006754A1
- Authority
- US
- United States
- Prior art keywords
- support layer
- board
- incisions
- surfboard
- foam core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title description 10
- 239000006260 foam Substances 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims description 34
- 239000004744 fabric Substances 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000004794 expanded polystyrene Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
- B29C53/06—Forming folding lines by pressing or scoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/57—Boards characterised by the material, e.g. laminated materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
- B29L2031/5272—Surf boards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Laminated Bodies (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
A sailing or wave-riding board includes a foam core, a support layer, and a cover layer. The board has a number of incisions at least in portions of the surface of the support layer. The incisions increase the bending capacity of the support layer so that it can also be adapted to the contour in more curved areas of the foam core, in particular in a boundary area.
Description
- The invention under consideration concerns a composite body, in particular a sailing or surfboard.
- A surfboard is known from EP 0 064 937 A2, which is produced in the so-called “two-shell mode of construction.” Here, a knit fabric is first applied on a core made of expanded polystyrene (EPS core). Subsequently, a foaming adhesive mass is applied extensively on the core. The core is then inserted between two preformed shell parts, which are either cemented on their joint or with the supply of heat and pressure, are soldered to one another in a production mold.
- From EP 0 069 076, a method is known for the production of a composite body with a plastic-hard foam core and a support layer. The production of the composite body takes place with a two-part casting mold, wherein in a first step, the two casting mold parts are lined with a film, which later forms the surface of the composite body. After pouring in a viscous composition, which forms the support layer of the composite body, the hard foam core is inserted and the mold is closed. Then, the foaming and curing of the support layer take place and subsequently, the finished composite body is released from the mold.
- Traditional surfboards, manufactured in series, frequently have a so-called “sandwich structure,” in which hard foam plates made of plastic (for example, foamed PVC), which are clearly sturdier than the foam core and serve as the “support layer,” are cemented on the underside and the upper side of a foam core made of expanded polystyrene. These hard foam plates, however, can be shaped only to a limited extent. In the boundary area of the foam core, which is curved substantially more than the upper side or underside, the hard foam plates are therefore cut off, since their elasticity is not sufficient for the shaping required here. Such a strong shaping would be possible with a supply of thermal energy, which, however, is very labor-intensive and expensive. For the reinforcement of the boundary area, therefore, the gap between the foam core, a cover film, and the joint edges of the upper and lower hard foam plate is laminated with glass-fiber cloth and resin in the thickness of the hard foam plates or filled out with plastic, such as epoxy resin. The “unfinished surfboard part” is coated with a watertight surface skin (for example, made of acrylic rubber-styrene-acrylonitrile copolymer (ASA)). The relatively thick lamination or plastic filling in the boundary area of the surfboard, however, increases the weight and is technically, a weak site.
- The goal of the invention under consideration is to create a composite body, in particular a surfboard or a wave-riding board, which, with a simple production, is characterized by a low weight and a high strength.
- The basic principle of the invention is to be found in providing the support layer, to be applied on a foam core, with a number of incisions or notches, at least in partial areas of its surface. By means of the incisions or notches, the bending capacity of the support layer is increased, so that it can also be adapted to the contour of the foam core in the more curved areas of the composite body, especially in the boundary area. This makes possible a completely closed sandwich structure with a low weight. The closed structure further increases the rigidity, the breaking resistance, and the service life of the composite body.
- Preferably, the incisions or notches are provided on the outside—that is, on the side turned away from the foam core-of the support layer, so that upon bending the support layer, the incisions open fan-like or notch-like.
- As a support layer, a hard foam plate, for example, can be used, which can be easily shaped by making incisions or notches in accordance with the contour of the foam core. For the upper side and the underside, a separate hard foam plate will be used as the support layer, which is cemented in the boundary area of the surfboard, joint to joint, with one another. For the production of a seamless transition, the joint area can be over-laminated with overlapping cloth, for example, a glass-fiber cloth.
- On the surface of the unfinished part thus obtained, foaming resin is applied, for example, by spraying. In a known manner, the still “wet” unfinished part is placed into a two-part production mold, prepared beforehand, into whose mold halves, the surface skin (the so-called ASA layer) is introduced, and subsequently, it is pressed to form a finished surfboard in one single operation.
- The invention is explained in more detail with the aid of an embodiment in connection with the drawings. The figures show the following:
- FIG. 1 is a cross-section through the body of a surfboard according to the invention; and
- FIG. 2 is a top view of an unfinished surfboard body in accordance with the invention.
- Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.
- FIG. 1 shows a cross-section through half of the body of a surfboard. The surfboard has a
foam core 1, which is made of, for example, expanded polystyrene (EPS). A support layer is cemented onto thefoam core 1; the layer consists of an uppersupport layer half 2 and a lowersupport layer half 3. Thesupport layer halves - One can clearly see that the curvature of the surfboard increases from the
middle area 4 to theboundary area 5. The hard foam plate, which forms theupper support layer 2 here, is therefore provided with a number ofincisions 6 before the cementing or shaping in theboundary area 5, wherein the bending capacity of theupper support layer 2 is increased. Thesupport layer 2 is then cemented in such a way that theincisions 6 lie on the outside—that is, on the side turned away from thefoam core 1. By shaping thesupport layer 2 during the cementing on thefoam core 1, theincisions 6 are turned upward so that the notch-like recesses, shown in FIG. 1, are produced. - The
upper support layer 2 is moved downwards to a “lower edge” 7 of the surfboard body and there cemented on an joint site 8 with thelower support layer 3. The joint site 8 is optionally over-laminated with a resin-soaked glass-fiber layer 9, which extends in theboundary area 5 upwards and to the lower side of the surfboard—that is, covers the joint site 8 and some or allnotches 6. The notch-like incisions 6 can be filled with resin beforehand. - Foaming or nonfoaming resin, such as epoxy or polyurethane, is applied, for example, by spraying onto the unfinished surfboard thus obtained. In a known manner, a watertight surface layer (ASA layer) is then applied, which is formed here from an
upper surface layer 10 and alower surface layer 11, which are cemented or soldered watertight, to one another, in theboundary area 5 of the surfboard on ajoint site 12. This manufacturing step is carried out with a two-part mold (not shown), wherein the upper and thelower surface layers foam core 1 and thesupport layer support layer surface layer - In this way, a completely closed, homogeneous, sandwich-like structure is produced in a so-called monocoque mode of construction, which, in comparison to the initially mentioned, traditional structure, has a lower weight, a higher rigidity, a higher breaking resistance, and a longer service life.
- FIG. 2 shows a top view of the upper
hard foam plate 2 of the body of a surfboard. One can see theincisions 6 in the boundary area of the body of the surfboard; they cross in the tip and end areas, so that the hard foam plate is particularly flexible there and is adapted also to the greater curvature present there in the longitudinal direction of the body of the surfboard. Furthermore,more recesses 14 are provided for the fin, the centerboard, and the foot loops and other incorporated parts. - In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.
- When introducing elements of the present invention or the preferred embodiment(s) thereof, the articles “a”, “an”, “the” and “said” are intended to mean that there are one or more of the elements. The terms “comprising”, “including” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
- As various changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
Claims (7)
1. A sailing or wave-riding board with a foam core on which a support layer made of plastic is applied and a surface layer is applied on the support layer, the support layer having a number of incisions at least in portions of its surface.
2. A board as set forth in claim 1 wherein the incisions are provided in a boundary area of the board.
3. A board as set forth in claim 1 wherein the incisions are provided on a side of the support layer opposite the foam core.
4. A board as set forth in claim 2 wherein the incisions are provided in a boundary area of the board.
5. A board as set forth in claim 1 wherein the board is completely enclosed by the support layer and wherein the support layer is formed by an upper support layer and a lower support layer which are cemented to one another at a joint edge.
6. A board as set forth in claim 5 wherein the joint edge is over-laminated with a resin-soaked cloth.
7. A board as set forth in claim 1 wherein the incisions are over-laminated with a resin-soaked cloth.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10002185A DE10002185C1 (en) | 2000-01-19 | 2000-01-19 | Surfboard is a body of compound materials with a foam core covered by carrier layers and protected by outer watertight covering layers in a simple prodn process for a lightweight and strong surfboard |
DE10002185.9 | 2000-01-19 | ||
DE10002185 | 2000-01-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020006754A1 true US20020006754A1 (en) | 2002-01-17 |
US6394864B2 US6394864B2 (en) | 2002-05-28 |
Family
ID=7628057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/766,146 Expired - Fee Related US6394864B2 (en) | 2000-01-19 | 2001-01-19 | Composite bodies, in particular sailing or surfboards |
Country Status (4)
Country | Link |
---|---|
US (1) | US6394864B2 (en) |
EP (1) | EP1118535A3 (en) |
JP (1) | JP2001239988A (en) |
DE (1) | DE10002185C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150306861A1 (en) * | 2014-04-25 | 2015-10-29 | GM Global Technology Operations LLC | Stiffening and/or strengthening a structural member using a pre-made microtruss insert |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10237921B4 (en) * | 2002-08-14 | 2005-01-05 | Sven Brauers | Device for surfing |
US7160601B2 (en) * | 2002-10-17 | 2007-01-09 | Reese Enterprises, Inc. | Entryway with dimensionally stable plastic components |
US7368031B2 (en) * | 2003-02-04 | 2008-05-06 | Wham-O, Inc. | Laminate inlay process for sports boards |
US20050281999A1 (en) * | 2003-03-12 | 2005-12-22 | Petritech, Inc. | Structural and other composite materials and methods for making same |
US20040192127A1 (en) * | 2003-03-28 | 2004-09-30 | Javier Huarcaya-Pro | Surfboard and method of manufacturing |
US6908351B2 (en) * | 2003-06-24 | 2005-06-21 | Wham-O, Inc. | Expanded polystyrene core sports board |
US8122802B2 (en) * | 2004-10-21 | 2012-02-28 | Lawrence Lacy | Multi-function power saw |
US7438618B1 (en) * | 2005-04-29 | 2008-10-21 | D&S Toys Company Limited | Flotation device |
FR2892379B1 (en) * | 2005-10-24 | 2008-04-04 | Salomon Sa | SLIDING BOARD COMPRISING A REINFORCED SANDWICH STRUCTURE |
FR2892340B1 (en) * | 2005-10-24 | 2008-02-22 | Salomon Sa | IMPROVED SANDWICH LAMINATE STRUCTURE |
US20090011667A1 (en) * | 2007-03-26 | 2009-01-08 | Nova Chemicals Inc. | Sportsboard structures |
US20110053443A1 (en) * | 2009-05-11 | 2011-03-03 | Mctavish Robin Alistair | System for Fin Placement on Surfboards |
US20110039464A1 (en) * | 2009-08-14 | 2011-02-17 | Mctavish Robin Alistair | System for Placement of Surfboard Fin Attachment for Multiple Foot Sizes |
US9045201B1 (en) * | 2012-01-31 | 2015-06-02 | Tadas Kuzmarskis | Cork watersports board |
US20170136718A1 (en) * | 2015-11-12 | 2017-05-18 | Cheng-Chung Chang | Method of making a composite board and a product made thereby |
CN107117257B (en) * | 2017-04-12 | 2018-08-07 | 珠海市琛龙船厂有限公司 | A kind of composite element and its manufacturing process |
Family Cites Families (24)
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CA696148A (en) * | 1964-10-20 | Noonan Richard | Plastic boat hull | |
US3591443A (en) * | 1967-09-18 | 1971-07-06 | Johns Manville | Flexible core material in skin and core laminates |
US3544417A (en) * | 1969-04-28 | 1970-12-01 | Unicor Inc | Cellular foam core assembly |
US3738675A (en) * | 1969-12-28 | 1973-06-12 | Nippon Musical Instruments Mfg | Ski core of plastic foam material |
CA966967A (en) * | 1972-04-18 | 1975-05-06 | Chemacryl Plastics Limited | Flexible core material for laminated structures and method of producing the same |
FR2249687B1 (en) * | 1973-11-07 | 1977-09-16 | Reflex Sa Ets | |
US4032689A (en) * | 1974-11-29 | 1977-06-28 | Insulex, Inc. | Construction laminate of plastic foam between paper sheets |
NO137179C (en) * | 1976-03-11 | 1978-01-18 | Magnus & Co As | SKI. |
JPS55106881A (en) * | 1979-02-13 | 1980-08-16 | Sekisui Plastics Co Ltd | Construction material for reinforced plastics and ship using such material |
GB2048174B (en) * | 1979-05-02 | 1983-05-18 | Pultrex Ltd | Assembling boat hulls |
DE3118631C2 (en) * | 1981-05-11 | 1983-11-17 | Fritzmeier AG, 5036 Oberentfelden | Process for the production of sailing or surfing boards as well as sailing or surfing boards |
EP0069076B1 (en) * | 1981-06-30 | 1985-07-17 | Ciba-Geigy Ag | Method of producing a composite body with a hard foam core and a skin of hard foam with a higher density |
FR2534188A1 (en) * | 1982-10-07 | 1984-04-13 | Roux Joel | Vacuum manufacturing process for sports boards, such as surfboards, sailboards, skateboards. |
US4705291A (en) * | 1986-07-18 | 1987-11-10 | Richard Gauer | Alpine ski |
JPS6354222A (en) * | 1986-08-25 | 1988-03-08 | Mitsubishi Rayon Eng Co Ltd | Continuous pressurizing device |
JPS6351877A (en) * | 1986-08-22 | 1988-03-04 | ヤマハ発動機株式会社 | Board and its production |
SE464514B (en) * | 1989-03-20 | 1991-05-06 | Diab Barracuda Ab | SET TO MANUFACTURE PLASTIC REQUIREMENTS OF SANDWICH CONSTRUCTION |
JPH03182896A (en) * | 1989-12-13 | 1991-08-08 | Yamaha Motor Co Ltd | Plastic sailboard and surface treating method of sailboard |
US5224890A (en) * | 1991-01-04 | 1993-07-06 | Kransco | Bodyboard with variable stiffness |
US5114370A (en) * | 1991-01-04 | 1992-05-19 | Kransco | Bodyboard with variable stiffness |
US5238434A (en) * | 1991-03-15 | 1993-08-24 | Kransco | Textured bottom skin for bodyboards and method |
DE4328012A1 (en) * | 1993-08-20 | 1995-02-23 | Richard Pott | Floating body in honeycomb construction and method of producing the same |
US5766051A (en) * | 1996-12-31 | 1998-06-16 | Messer; Jason | Wakeboard traction pad |
USD446273S1 (en) * | 2000-07-27 | 2001-08-07 | Michael A. Natale | Bodyboard |
-
2000
- 2000-01-19 DE DE10002185A patent/DE10002185C1/en not_active Expired - Fee Related
-
2001
- 2001-01-08 EP EP01100429A patent/EP1118535A3/en not_active Withdrawn
- 2001-01-16 JP JP2001008293A patent/JP2001239988A/en active Pending
- 2001-01-19 US US09/766,146 patent/US6394864B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150306861A1 (en) * | 2014-04-25 | 2015-10-29 | GM Global Technology Operations LLC | Stiffening and/or strengthening a structural member using a pre-made microtruss insert |
US10105941B2 (en) * | 2014-04-25 | 2018-10-23 | GM Global Technology Operations LLC | Stiffening and/or strengthening a structural member using a pre-made microtruss insert |
Also Published As
Publication number | Publication date |
---|---|
US6394864B2 (en) | 2002-05-28 |
EP1118535A2 (en) | 2001-07-25 |
DE10002185C1 (en) | 2001-06-07 |
EP1118535A3 (en) | 2002-11-20 |
JP2001239988A (en) | 2001-09-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BOARDS & MORE GES.M.B.H., AUSTRIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHARL, THOMAS;REEL/FRAME:012127/0501 Effective date: 20010809 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20060528 |