GB2201117A - Manufacturing process for composite hockey sticks - Google Patents

Manufacturing process for composite hockey sticks Download PDF

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Publication number
GB2201117A
GB2201117A GB08704064A GB8704064A GB2201117A GB 2201117 A GB2201117 A GB 2201117A GB 08704064 A GB08704064 A GB 08704064A GB 8704064 A GB8704064 A GB 8704064A GB 2201117 A GB2201117 A GB 2201117A
Authority
GB
United Kingdom
Prior art keywords
hockey stick
rough
foaming agent
hockey
fibres
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
Application number
GB08704064A
Other versions
GB8704064D0 (en
GB2201117B (en
Inventor
Jeng Zeng Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHARNG INN ALUMINUM INDUSTRY C
Original Assignee
CHARNG INN ALUMINUM INDUSTRY C
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHARNG INN ALUMINUM INDUSTRY C filed Critical CHARNG INN ALUMINUM INDUSTRY C
Priority to GB8704064A priority Critical patent/GB2201117B/en
Publication of GB8704064D0 publication Critical patent/GB8704064D0/en
Publication of GB2201117A publication Critical patent/GB2201117A/en
Application granted granted Critical
Publication of GB2201117B publication Critical patent/GB2201117B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A63B60/14—Coverings specially adapted for handles, e.g. sleeves or ribbons
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/70—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00 with bent or angled lower parts for hitting a ball on the ground, on an ice-covered surface, or in the air, e.g. for hockey or hurling
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/569—Shaping and joining components with different densities or hardness
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/22—Field hockey
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • 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
    • B29L2031/5227—Clubs

Abstract

A composite hockey stick (1) is formed by introducing polyurethane foaming agent into a mould and heat treating the foaming agent to produce a 'rough' hockey stick. This 'rough' hockey stick is covered with a fibre epoxy resin combination which is 'heat cured' with the 'rough' hockey stick to form the composite stick. The handle (12) of the thus formed hockey stick is covered, e.g. with leather. Alternatively, the resin/fibre is applied to a suitably shaped expandable carrier tube, the foaming agent is introduced into the carrier tube under pressure and the resin and foaming agent are then simultaneously cured. <IMAGE>

Description

MANUFACTURING PROCESS FOR COMPOSITE HOCKEY STICKS BACKGROUND OF THE INVENTION This invention relates to hockey sticks.
It is an object. of the present invention to provide a manufacturing process for a hockey stick which results in a hockey stick which is intended to assist hockey players in improving the ' smoothness, accuracy and velocity with which they are able to swing a hockey stick.
A further object of the present invention is the production of an improved method ~ of: manufacturing a hockey stick which makes it possible to produce a durable, inexpensive and impressive hockey stick.
SUMMARIES OF THE INVENTION According to the present invention there is provided a process for producing composite construction hockey sticks including the steps of: (a) introducing a polyurathane (PU) foaming agent into a mould defining a hockey stick shape; .s (b) subjecting the foaming agent whilst in the mould to heat treatment to cause the foaming agent to set to a 'rough' hockey stick form; (c) providing fibres which have been treated with epoxy resin in such manner that they can form a covering on the 'rough' hockey stick; (d) heat treating the 'rough' hockey stick and is covering at such temperature that 'rough' hockey stick and the epoxy resin are both cured; and (e) wrapping a protective covering such as leather around the handle portion of the hockey stick.
Preferably the fibres are applied by applying a plurality of layers thereof to a previously formed 'rough' hockey stick.
In an alternative preferred process the fibres and the associated epoxy resin are applied as a surface coating on an expandable carrier tube defining the shape of a hockey stick, the carrier tube being inflated by filling the carrier tube with the foaming agent under pressure, the resin and foaming agent~betng subsequently simultaneously cured thereby to provide the composite construction hockey stick.
Conveniently, the heat treatment is carried out at 150 degrees Celsius.
BRIEF DESCRIPTION OF THE DRAWINGS, For a better understanding of the invention reference will now be made to the accompanying drawings in which: . Figure 1 illustrates the principal stages in a process for manufacturing a hockey stick according to the present invention; Figure 2 illustrates a stage in the formation of a hockey in accordance with the invention the stage producing 'rough' hockey stick; and Figure 3 illustrates a finished hockey stick with its protective covering.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The method of manufacturing a hockey stick in accordance with the proposals of the invention is indicated in the schematic process stage flow diagram of Figure 1.
In this embodiment of the process, polyurathane (PU) foaming agent is introduced into a mould defining, i.e.,having, the shape of a hockey stick. Heat is applied to the mould so that the foaming agent is caused to set into the shape of a 'rough' hockey stick is formed. The overall length of the'stick is covered i.e., wrapped with synthetic fibres, carbon fibres, glass fibres, or other material fibres which have been dipped in an epoxy resin. The number of layers of fibres used depends upon the specific specification required for the finished or completed hockey stick.
Referring now to Figure 1, from which it can be seen that PU foaming agent is introduced into a mould defining the desired shape for a hockey stick. The foaming agent is subjected to a heating treatment so as to cause the foaming agent to set into the shape of a basic or 'rough' hockey stick. The thus formed 'rough' hokey stick is then covered with synthetic fibres, carbon fibres, glass fibres or other materials in fibre form which have been dipped in an epoxy resin. The fibres can be, and preferably are, applied to the rough hockey stick by being, for example, wound around the 'rough' hockey stick. The combination of the 'rough' hockey stick and the fibres wound there around is subjected to a heating stage.
In one embodiment of the process this involves the application of heat to the outside of the mould at a temperature sufficient to cure both the material of the 'rough' hockey stick and the resin material. A temperature of about 150 degrees Celsius has been found to be suitable. At this temperature the epoxy resin content of the fibre combination will be cured i.e., solidified thereby forming with the likewise cured PU a composite hockey stick 1 which although in its essentially final form is still unfinished.
After completing the above process stages, the handle portion 12 of the stick is covered with a protective material such as a plastics or natural material 3 such as leather. This covering is provided for assisting the user's grip on the stick during play.
The above discussed process can be modified in detail, for example, by replacing the steps of forming the 'rough' hockey stick and then covering the 'rough' hockey stick with the fibre resin combination with the following steps:- providing a tube of plastics i.e., cellophane or other material which has been dipped into epoxy resin and placing the coated tube within a mould as previously mentioned above. Air at a pressure of 6-15 kg/cm is introduced into the tube and heat treatment is simultaneuosly carried out. The tube is expanded by being filled with EVA or PU filler which cures to form the 'rough' hockey stick.
'After the formation of the hockey stick the striking portion of the hockey stick is painted with PU paint.
On completion of these processes the protective wrapping is provided as previously discussed.
While the present invention has been described with reference to the preferred embodiments thereof, it will be readily appreciated that various modifications may be made without departing from the scope of the invention which is defined by the appended claims.

Claims (5)

1 A process for producing composite construction hockey sticks including the steps of: (a) introducing a polyurathane (PU) foaming agent into a mould defining a hockey stick shape; (b) subjecting the foaming agent whilst in the mould to heat treatment to cause the foaming agent to set to a 'rough hockey stick form; (c) providing the fibres which have been treated with epoxy resin in such manner that they can form a covering on the 'rough' hockey stick; (d) heat treating the 'rough' hockey stick and is covering at such temperature that 'rough' hockey stick and the epoxy resin are both cured; and (e) wrapping a protective covering such as leather around thehandle portion of the hockey stick.
2. A process as claimed in claim 1, and wherein the required application of fibres is achieved by applying a plurality of layers of the fibres and epoxy resin to a previously formed 'rough' hockey stick.
3. A process as claimed in claim 1, and including the steps of applying the fibres and the associated epoxy resin as a coating on a hockey stick shape defining surface of an expandable carrier tube defining the shape of a hockey stick, inflating the carrier tube by filling the carrier tube with the foaming agent under pressure and subsequently simultaneously curing the resin an foaming agent thereby to provide the composite hockey stick.
4. A process as claimed in any previous claim, in which the heat treatment is carried out at 150 degrees Celsius.
5. A hockey stick when made by the process as claimed in any of the preceding claims.
GB8704064A 1987-02-20 1987-02-20 Manufacturing process for composite hockey sticks Expired - Fee Related GB2201117B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8704064A GB2201117B (en) 1987-02-20 1987-02-20 Manufacturing process for composite hockey sticks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8704064A GB2201117B (en) 1987-02-20 1987-02-20 Manufacturing process for composite hockey sticks

Publications (3)

Publication Number Publication Date
GB8704064D0 GB8704064D0 (en) 1987-03-25
GB2201117A true GB2201117A (en) 1988-08-24
GB2201117B GB2201117B (en) 1990-04-18

Family

ID=10612678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8704064A Expired - Fee Related GB2201117B (en) 1987-02-20 1987-02-20 Manufacturing process for composite hockey sticks

Country Status (1)

Country Link
GB (1) GB2201117B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008803A1 (en) * 1989-12-15 1991-06-27 Motley Manufacturing Agencies Pty Ltd Hockey stick
US5050878A (en) * 1988-10-07 1991-09-24 Destra S.A. Hockey stick made of composite materials and its manufacturing process
WO1997033660A1 (en) * 1996-03-15 1997-09-18 Madshus A/S Method of manufacturing a blade
WO2007061772A2 (en) * 2005-11-18 2007-05-31 Stx, Llc Bowed field hockey stick
CN103223723A (en) * 2012-12-31 2013-07-31 桐乡波力科技复材用品有限公司 Method for manufacturing lines on surface of hockey stick striking plate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1304015A (en) * 1969-04-30 1973-01-24
GB2029757A (en) * 1978-09-22 1980-03-26 Kun Nan Lo Sports Equipment
GB2173146A (en) * 1985-04-04 1986-10-08 Dunlop Ltd Method of making striking implements

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1304015A (en) * 1969-04-30 1973-01-24
GB2029757A (en) * 1978-09-22 1980-03-26 Kun Nan Lo Sports Equipment
GB2173146A (en) * 1985-04-04 1986-10-08 Dunlop Ltd Method of making striking implements

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5050878A (en) * 1988-10-07 1991-09-24 Destra S.A. Hockey stick made of composite materials and its manufacturing process
WO1991008803A1 (en) * 1989-12-15 1991-06-27 Motley Manufacturing Agencies Pty Ltd Hockey stick
WO1997033660A1 (en) * 1996-03-15 1997-09-18 Madshus A/S Method of manufacturing a blade
WO2007061772A2 (en) * 2005-11-18 2007-05-31 Stx, Llc Bowed field hockey stick
WO2007061772A3 (en) * 2005-11-18 2007-12-06 Stx Llc Bowed field hockey stick
US7377865B2 (en) 2005-11-18 2008-05-27 Stx, Llc Bowed field hockey stick
CN103223723A (en) * 2012-12-31 2013-07-31 桐乡波力科技复材用品有限公司 Method for manufacturing lines on surface of hockey stick striking plate
CN103223723B (en) * 2012-12-31 2015-09-23 桐乡波力科技复材用品有限公司 A kind of plate face lines preparation method of hockey lever beater plate

Also Published As

Publication number Publication date
GB8704064D0 (en) 1987-03-25
GB2201117B (en) 1990-04-18

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PCNP Patent ceased through non-payment of renewal fee