GB2064420A - Fibre Reinforced Tubes for Fishing Rods and Their Manufacture - Google Patents
Fibre Reinforced Tubes for Fishing Rods and Their Manufacture Download PDFInfo
- Publication number
- GB2064420A GB2064420A GB8038985A GB8038985A GB2064420A GB 2064420 A GB2064420 A GB 2064420A GB 8038985 A GB8038985 A GB 8038985A GB 8038985 A GB8038985 A GB 8038985A GB 2064420 A GB2064420 A GB 2064420A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- tube
- resin
- carbon fibres
- tapered
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 16
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- UQGKUQLKSCSZGY-UHFFFAOYSA-N Olmesartan medoxomil Chemical compound C=1C=C(C=2C(=CC=CC=2)C2=NNN=N2)C=CC=1CN1C(CCC)=NC(C(C)(C)O)=C1C(=O)OCC=1OC(=O)OC=1C UQGKUQLKSCSZGY-UHFFFAOYSA-N 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 9
- 239000003365 glass fiber Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 241000277331 Salmonidae Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K87/00—Fishing rods
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2307/00—Use of elements other than metals as reinforcement
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Textile Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
A fibre reinforced tube for a fishing rod is made of partially-cured resin- bonded carbon fibres by forming a first sheet 10 of elongate and preferably trapezoidal form with resin-bonded carbon fibres extending longitudinally of the sheet and putting on this a preferably narrower sheet 11 of partially-cured resin-bonded carbon fibres, extending the whole length of the first sheet, at least some of the fibres in the second sheet extending transversely (e.g. in a random mix) of the longitudinal direction, winding the sheets around a mandrel to form a tube and then curing the resin. <IMAGE>
Description
SPECIFICATION
Fibre Reinforced Tubes for Fishing Rods and
Their Manufacture
This invention relates to fibre reinforced tubes for fishing rods and their manufacture.
It has been well-known for many years to manufacture tubes for fishing rods using resinbonded glass fibre cloth, the cloth being wrapped on a mandrel to form a tube and the resin then cured. When carbon fibres became available, it was immediately apparent that a considerable saving in weight could be made by substituting carbon fibres for the glass. Carbon fibres are much stronger in tension than glass fibres but are considerably stiffer. It was readily possible to use longitudinal carbon fibres but difficulty was encountered in trying to employ circumferential carbon fibres.Thus it became the practice to use mixed fibre material in which carbon fibres, which were available as loose fibres or as tows comprising a multitude of parallel fibres, were laid along the length of a trapezoidal-shaped sheet of glass cloth, the assembly being impregnated with resin which was cured after the cloth with the carbon fibres were wound around a mandrel. The glass fibre cloth served the purpose not only of providing the circumferential fibres to give hoop strength to the tube but also as a means of supporting the longitudinally extending carbon fibres during the tube-forming operation.In more recent years, mixed fibre tubes for fishing rods have been formed using a glass cloth together with carbon fibres which extend longitudinally of the assembly and which are bonded with resin into a matrix forming a flexible sheet which is placed on the glass fibre cloth before winding the cloth and matrix together around a mandrel and curing the resin.
The present invention is directed to a method of making a tube for a fishing rod in which all the reinforcement comprises carbon fibre.
According to one aspect of the present invention a method of making a tapered tube for a fishing rod comprises the steps of forming a first elongate sheet of carbon fibres extending lengthwise of the sheet in a partially-cured flexible resin bonding material, forming a second sheet of the same length as the first sheet and of a width not exceeding that of the first sheet, the second sheet comprising carbon fibres in a partially-cured flexible resin-bonding material with the carbon fibres extending transversely of the length of the sheet or extending randomly in the plane of the sheet, the number of carbon fibres in the second sheet per unit area being substantially less than the number per unit area in the first sheet, such that the second sheet is flexible enough to be rolled around a lengthwise tapered mandrel to form a tube, superimposing the two sheets and winding them together around a tapered mandrel to form a tube of tapered section and then curing the resin.
It is simplest to consider, in the first place, the use of carbon fibres in the first sheet extending longitudinally of the sheet and hence lying longitudinally in the finished tube and with the fibres in the second sheet extending circumferentially in the finished tube. These latter fibres provide the required hoop strength. The stiffness of the tube is determined primarily by the longitudinal fibres. However carbon fibres are now available in the form of thin sheet material in which the fibres extend in random directions in the plane of the sheet. The fibres in such a sheet thus have directions which, in general, have components in both longitudinal and transverse directions. Such sheet material thus contributes both to the hoop strength and to the stiffness of the tube.
Preferably the second sheet is thinner than the first sheet. It may also be made narrower than the first sheet provided its width is sufficient along its whole length to form at least one complete turn around the mandrel. The first sheet preferably is trapezoidal and preferably has a width such that it forms at least two complete turns around the mandrel. The trapezoidal shape enables the tube to be formed with a uniform number of turns on the tapered mandrel. Typically there are between two and four turns for a light rod such as a trout or match rod. Up to ten turns may be employed in a heavy duty beach rod. The second sheet may also be of trapezoidal shape.
By the above-described method, it has been found possible to produce a hollow tube for a fishing rod which makes use solely of carbon fibre as the reinforcement for the resin material.
Because of the considerably greater tensile strength of carbon fibres compared with glass fibres, such a rod can be made of smaller diameter and hence of lighter weight compared with tubes formed of carbon fibres and glass cloth as have been used heretofore.
The number of longitudinal fibres per unit area in the first sheet may be varied along the length of the sheet according to the requirements for the relative stiffness of the rod along the length thereof. Likewise, the number of carbon fibres per unit area in the second sheet may vary along the length of the tube in accordance with the required hoop strength in the various parts of the tube.
The invention furthermore includes within its scope a tube made by the above-described method.
According to another aspect of the invention, a tube for a fishing rod comprises a tapered tubular element of carbon fibre reinforced resin material having at least one layer of carbon fibres randomly oriented to have longitudinal and circumferential components of direction, the layer extending for at least one complete turn and lying within or between layers of longitudinallyextending carbon fibres in a resin matrix.
The invention still further includes within its scope a tube for a fishing rod comprising a tapered tubular element of carbon fibre reinforced resin material having circumferentially-extending carbon fibres extending for at least one complete turn and lying within or between layers of longitudinally-extending carbon fibres in a resin matrix.
In the following description of one example of the manufacture of a tube for a fishing rod, reference will be made to the accompanying drawing in which Figure 1 is a diagram illustrating an assembly of two sheets each containing carbon fibres at one stage during manufacture of the tube; and
Figure 2 is a section through the tube of Figure 1 drawn to a much larger scale.
A first sheet 10 is formed as a matrix of longitudinally-extending carbon fibres in a partially-cured resin, typically an epoxy or phenolic resin, such as to form a flexible sheet.
The sheet is of elongate trapezoidal shape for winding around a mandrel extending the whole length of the sheet, the mandrel being tapered and the trapezoidal shape being such that the number of turns remains substantially constant along the length of the tube. Typically the width of the sheet 10 is such that between two and three complete turns will be formed by winding this sheet around the mandrel. The sheet itself comprises mainly carbon fibres, the amount of the resin being merely sufficient to hold the fibres in place to form the matrix. Typically the resin will form between 2 and 20% by volume of the matrix assembly.
Before winding this matrix sheet 10 around the mandrel, there is superimposed upon it a second resin-bonded carbon fibre flexible sheet 11 which is of the same length as the sheet 10 but which, in this particular embodiment, has the carbon fibres extending transversely of the lengthwise direction. The sheet 11 is formed with a partiallycured epoxy or phenolic resin matrix so as to be flexible. This sheet 11 has many fewer carbon fibres per unit area than the sheet 10 and preferably is substantially thinner than the sheet 10. It has to be made sufficiently thin and with sufficiently few fibres that it is flexible enough to wind around the mandrel.The tensile strength of the finally cured material in the hoopwise direction is typically between 5% and 35% of the tensile strength of the mandrel in the longitudinal direction. Convenientiy as shown in Figure 1, this sheet 11 has a width such that it forms only about one complete turn around the mandrel. It may however be wider than this and might be as wide as the sheet 10 provided it is made sufficiently thin, bearing in mind that only a limited number of fibres are necessary to provide the required hoop strength.
After the two sheets 10, 11 have been superimposed, the assembly is wound upon the tapered mandrel, the winding starting from the
edge of the sheet 10. The tapering of the sheets and of the mandrel are such that the number of turns is uniform along the length of the mandrel.
The layers thus formed are secured in position temporarily, for example with an adhsesive
cellulose tape, and the assembly is then heated in
an oven to cure the resin. After curing the
cellulose tape is stripped off and the assembly is sanded to give a smooth surface finish.
As shown in Figure 2, the transverse carbon fibres of the sheet 11 are sandwiched between layers of the sheet 10 if the sheets are formed as shown in Figure 1 with the sheet 11 of narrower width than the sheet 10. In Figure 2 the thickness and spacing of the turns has been exaggerated for clarity. The carbon fibres of the sheet 11 extend for at least one complete turn around the mandrel, and so provide the required hoop strength. The sheet 10 is sufficiently wide that there are the required number of turns, typically in the range of two to ten complete turns, giving the necessary number of longitudinally-extending fibres. The same resin is preferably used for the two sheets 10, 11 and the curing operation results in the two sheets being bonded together to form a unitary structure.
Instead of forming the sheet 11 of fibres extending transversely of the length of the sheet, that is to say in the hoopwise direction in the final tube, this sheet 11 may be formed of a sheet of carbon fibre material in which the fibres are randomly oriented in directions lying parallel to the general plane of the sheet. Carbon fibre material of this kind is commercially available in thin sheets suitable for making a tube as described above. By using randomly oriented fibres in the sheet 11, this layer provides not only hoop strength but also longitudinal tensile strength and stiffness. The longitudinal fibres in the sheet 10 provide the extra longitudinal strength and stiffness required for a fishing rod.
The relative proportions of the assembly formed by the two sheets 10, 11 depends on the required properties of the final formed articles.
There are many varied requirements for different types of fishing rods. The required proportions however may readily be determined empirically.
Claims (14)
1. A method of making a tapered tube for a fishing rod comprising the steps of forming a first elongate sheet of carbon fibres extending lengthwise of the sheet in a partially-cured flexible resin bonding material, forming a second sheet of the same length as the first sheet and of a width not exceeding that of the first sheet, the second sheet comprising carbon fibres in a partially-cu red flexible resin-bonding material with the carbon fibres extending transversely of the length of the sheet or extending randomly in the plane of the sheet, the number of carbon fibres in the second sheet per unit area being substantially less than the number per unit area in the first sheet such that the second sheet is flexible enough to be rolled around a lengthwise tapered mandrel to form a tube, superimposing the two sheets and winding them together around a tapered mandrel to form a tube of tapered section and then curing the resin.
2. A method as claimed in Claim 1 wherein each sheet comprises carbon fibres in a resin matrix and wherein the second sheet is thinner than the first sheet.
3. A method as claimed in either Claim 1 or
Claim 2 wherein the second sheet is narrower than the first sheet but is of a width sufficient along its whole length to form at least one complete turn around the mandrel.
4. A method as claimed in any of the preceding claims wherein the first sheet has a width such that its forms at least two complete turns around the mandrel.
5. A method as claimed in Claim 4 wherein the first sheet has a width such that it forms between 2 and 10 complete turns around the mandrel.
6. A method as claimed in any of the preceding claims wherein the first sheet is of trapezoidal shape to give a uniform number of turns along the tapered mandrel.
7. A method as claimed in any of the preceding claims wherein the second sheet is of trapezoidal shape to give a uniform number of turns along the tapered mandrel.
8. A method as claimed in any of the preceding claims wherein the resin in each sheet is an epoxy resin.
9. A method as claimed in any of Claims 1 to 7 wherein the resin in each sheet is a phenolic resin.
10. A method of making a tapered tube for a fishing rod substantially as hereinbefore described with reference to the accompanying drawing.
11. A tapered tube for a fishing rod made by the method of any of Claims 1 to 10.
12. A tube for a fishing rod comprising a tapered tubular element of carbon fibre reinforced resin material having at least one layer of carbon fibres randomly oriented to have longitudinal and circumferential components of direction, the layer extending for at least one complete turn and lying within or between layers of longitudinally extending carbon fibres in a resin matrix.
1 3. A tube for a fishing rod comprising a tapered tubular element of carbon fibre reinforced resin material having circumferentially-extending carbon fibres extending for at least one complete turn and lying within or between layers of longitudinafly-extending carbon fibres in a resin matrix.
14. A tube as claimed in either Claim 10 or
Claim 1 3 wherein the resin forms between 2 and 20% by votume of the fibre and resin matrix assembly.
1 5. A tube as claimed in amy of Claims 12 to 14 wherein the tensile strength of the tube material in the hoopwise direction is between 5% and 35% of the tensile strength in the longitudinal direction.
1 6. A tube for a fishing rod substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8038985A GB2064420B (en) | 1979-12-04 | 1980-12-04 | Fibre reinforced tubes for fishing rods and their manufacture |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7941833 | 1979-12-04 | ||
| GB8038985A GB2064420B (en) | 1979-12-04 | 1980-12-04 | Fibre reinforced tubes for fishing rods and their manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2064420A true GB2064420A (en) | 1981-06-17 |
| GB2064420B GB2064420B (en) | 1983-05-11 |
Family
ID=26273782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8038985A Expired GB2064420B (en) | 1979-12-04 | 1980-12-04 | Fibre reinforced tubes for fishing rods and their manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2064420B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0062973A2 (en) * | 1981-04-13 | 1982-10-20 | Mitsubishi Rayon Co., Ltd. | Laminated pre-impregnated carbon fiber structures |
| EP0226555A2 (en) * | 1985-12-03 | 1987-06-24 | REGLASS S.p.A. | Multi-layer structure to accomplish very light-in-weight and tough tubular elements particularly adapted for the construction of fishing rods |
| EP0237031A2 (en) * | 1986-03-11 | 1987-09-16 | C. CONRADTY NÜRNBERG GmbH & Co. KG | Carbon body having a high porosity, and method of making the same |
| EP0475412A2 (en) * | 1990-09-13 | 1992-03-18 | PETOCA Ltd. | Carbon fiber-reinforced plastic pipe-shaped article and process for producing the same |
| GB2279902A (en) * | 1993-07-13 | 1995-01-18 | Lo Kun Nan | Method for manufacturing a fiber reinforced thermoplastic resin composite racket frame |
| US20140173967A1 (en) * | 2012-12-25 | 2014-06-26 | Shimano Inc. | Rod body for fishing rod and fishing rod provided therewith |
| CN104663599A (en) * | 2013-11-29 | 2015-06-03 | 古洛布莱株式会社 | Tip for fishing rod and fishing rod having the tip |
| EP2888936A1 (en) * | 2013-12-27 | 2015-07-01 | Globeride, Inc. | Fishing rod |
| US9949466B2 (en) | 2013-12-27 | 2018-04-24 | Globeride, Inc. | Fishing rod |
| US10085433B2 (en) | 2014-12-26 | 2018-10-02 | Globeride, Inc. | Tip rod and fishing rod having the same |
-
1980
- 1980-12-04 GB GB8038985A patent/GB2064420B/en not_active Expired
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0062973A3 (en) * | 1981-04-13 | 1984-09-19 | Mitsubishi Rayon Co., Ltd. | Laminated pre-impregnated carbon fiber structures |
| EP0062973A2 (en) * | 1981-04-13 | 1982-10-20 | Mitsubishi Rayon Co., Ltd. | Laminated pre-impregnated carbon fiber structures |
| EP0226555A2 (en) * | 1985-12-03 | 1987-06-24 | REGLASS S.p.A. | Multi-layer structure to accomplish very light-in-weight and tough tubular elements particularly adapted for the construction of fishing rods |
| EP0226555A3 (en) * | 1985-12-03 | 1988-06-01 | Reglass S.P.A. | Multi-layer structure to accomplish very light-in-weight and tough tubular elements particularly adapted for the construction of fishing rods |
| EP0237031A2 (en) * | 1986-03-11 | 1987-09-16 | C. CONRADTY NÜRNBERG GmbH & Co. KG | Carbon body having a high porosity, and method of making the same |
| EP0237031A3 (en) * | 1986-03-11 | 1988-10-26 | C. CONRADTY NÜRNBERG GmbH & Co. KG | Carbon body having a high porosity, and method of making the same |
| EP0475412A2 (en) * | 1990-09-13 | 1992-03-18 | PETOCA Ltd. | Carbon fiber-reinforced plastic pipe-shaped article and process for producing the same |
| EP0475412A3 (en) * | 1990-09-13 | 1992-05-27 | Petoca Ltd. | Carbon fiber-reinforced plastic pipe-shaped article and process for producing the same |
| GB2279902A (en) * | 1993-07-13 | 1995-01-18 | Lo Kun Nan | Method for manufacturing a fiber reinforced thermoplastic resin composite racket frame |
| US9635842B2 (en) * | 2012-12-25 | 2017-05-02 | Shimano Inc. | Rod body for fishing rod and fishing rod provided therewith |
| US20140173967A1 (en) * | 2012-12-25 | 2014-06-26 | Shimano Inc. | Rod body for fishing rod and fishing rod provided therewith |
| CN104663599A (en) * | 2013-11-29 | 2015-06-03 | 古洛布莱株式会社 | Tip for fishing rod and fishing rod having the tip |
| US10034465B2 (en) | 2013-11-29 | 2018-07-31 | Globeride, Inc. | Fishing rod |
| CN104737993A (en) * | 2013-12-27 | 2015-07-01 | 古洛布莱株式会社 | Rod Tip For Fishing Rod, And Fishing Rod Possessing Same |
| EP2888936A1 (en) * | 2013-12-27 | 2015-07-01 | Globeride, Inc. | Fishing rod |
| CN104737993B (en) * | 2013-12-27 | 2018-01-26 | 古洛布莱株式会社 | The fishing rod tip and the fishing rod with the rod tip |
| US9949466B2 (en) | 2013-12-27 | 2018-04-24 | Globeride, Inc. | Fishing rod |
| US10182562B2 (en) | 2013-12-27 | 2019-01-22 | Globeride, Inc. | Fishing rod |
| US11252947B2 (en) | 2013-12-27 | 2022-02-22 | Globeride, Inc. | Fishing rod |
| US10085433B2 (en) | 2014-12-26 | 2018-10-02 | Globeride, Inc. | Tip rod and fishing rod having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2064420B (en) | 1983-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |