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Method of forming composite of glass fibres of various filament diameters into a fibrous mat
Cm/mites Printed
Munufucturing 6 (1995)
(; 1995 Elsevier Science in Great Britain. All rights
109 Limited reserved
0956-7141’95~$10.00
Abstracts .4bstracts
of US patents are prepared
by Dr R.J. Hand,
Method of making bicycle tubular frame of plastic composite material You, C.-S. (Feng Yuan City, Taichung Hsien, Taiwan) US Put 5 318 742 (7 June 1994) An inner-tube of a bendable and heat-resistant inflatable material is covered with two layers, each composed of a thermoplastic matrix layer and a long fibre reinforcing layer, and placed in an appropriately shaped mould. The moulding tool is heated to a temperature above the melting point of the thermoplastic and the inner-tube is pressurized so that the molten resin is forced into the interstices between the fibres. After cooling, the bicycle tubular frame is removed from the mould.
Pipe joining construction of a bicycle frame Pai, C.-D. (Ta Chia Chen, Taichung Hsien, Taiwan) US Pat 5 318 819 (7 June 1994) Inserts comprising resin-impregnated unidirectional fibres surrounding a foamable material are placed in the joints between each of the frame tubes so that the corresponding extensions from a joint region. A foamable material surrounded by an outer composite layer is placed around the outside of the joint. The whole is then heated so that the foamable materials foam and forcibly couple the tubes and the extensions together.
Method and apparatus for producing fibres Endo, S.. Kawashima, H.. Hirata, K., Misu, Y. and Itoh, A. (Toshiba Monofrax Co., Ltd. Tokyo, Japan) US Pat 5 322 650 (21 June 1994) A120,-Si02 or A1203 Si02-Cr20, ceramic is fused to produce a flow of molten material. At least three water jets are applied, at an angle, to the flow of molten material to generate the fibres.
Method of producing fabric reinforcing matrix for composites Yasui, Y., Anahara, M., Hori. F. and Takeuchi, J. (Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, Japan) C/S
Pat 5 327 621 (I2 July 1994) Yarns are woven between regulating members on a base to produce a lamination composed of a number of layers that contain at least two different directions of yarn. The lamination and regulating members are simultaneously removed from the base; and then the
of Patents Department
of‘ Engineering
Materials,
regulating members are replaced by vertical yarns that form loops. A locking thread is inserted into these loops to produce the fabric reinforcement.
Apparatus for manufacturing a glass and organic composite strand, including blowing device Roncato, G., Fedorowsky, R., Boissonnat, P. and Loubinoux, D. (Vetrotex France, Chambery, France) US Pat 5 328 493 (12
University
of Sh&ield,
UK
surface of the metal to produce a bonding surface. Several composite laminates are laid up over the bonding surface, and heat and pressure and applied to produce the composite shaft.
Method of manufacturing fibre gypsum board Schafer, K.K.. Mlezer, G.M., Scriba, J ., Bhagwat, S.G. and Eisses, J. (Carl Schenck AG, Darmstadt, Germany and Louisiana Pacific Corporation, Portland, OR. USA)
July 1994)
US Pat 5 342 566 (30 August 1994)
The apparatus consists of a die to which glass is supplied by a gravity feed and is heated by the Joule effect. This die is perforated with a series of orifices. There is a means for coating the glass fibres and for combining them into at least one strand. In addition, there is at least one drawing head containing an annular die plate which is perforated with orifices distributed in one or more groups. This die plate is supplied with molten organic thermoplastic material under pressure and organic filaments are drawn from it. The glass strand and the organic filaments then pass through an assembly device where they are combined.
Fibres are mixed with water and an absorbent to minimize the adhesion of the fibres to each other. This mixture is mixed with dry calcined gypsum, the resultant mixture is then formed into a uniform mat, compressed to form a board and dried. An accelerator is added to any of the original components to speed the setting of the board.
Method various (Pfeffer,
of forming composite of glass fibres of filament diameters into a fibrous mat J.R. of Bakersfield, CA, USA) LiS
Pat 5 342 424 (30 August 1994) A second group of glass fibres is directly built up on top of a first group. Gas is passed through the layered groups of fibres so that they are compressed into layers of controlled thickness. The fibres are coated with a synthetic resin and the resin and fibres are cured whilst the gas passes through the fibres. The gas passage means that the resultant composite has a high particle retention ability.
Bonding of thermoplastic composite structures to metal structures McIntire, A.J. and Davis, G.C. (United Technologies Corporation, Hartford, CT, USA) US Pat 5 342 465 (30 August 1994j A method is described for joining a metallic fitting to a thermoplastic shaft to form a drive shaft. The surface of the metallic component is knurled and then a layer of thermoplastic at least as thick as the knurls is moulded over the
COMPOSITES
MANUFACTURING
Method for increasing fibre strength translation in composite pressure vessels using matrix resin formulations containing surface acting agents Decker, O.H., Lloyd, B.A. and Mumford. N.A. (Thiokol Corporation, Ogden, UT, USA) US Pat 5 356 499 ( 18 October 1994) A surface-active agent, which will enhance fibreeresin interactions and thereby reduces variation in performance, is added to a formulation comprising a curable matrix resin, an effective amount of room temperature active resin curing agent and a latent curing agent which can be activated by heat or radiation. A fibre, filament strand or tow is infiltrated with this mixture and the whole is allowed to partially cure to produce a prepreg. A pressure vessel is wound using the prepreg and the latent curing agent is activated to produce the composite pressure vessel.
Method of stacking ceramic green sheets Hosokawa, T. (Murata Mfg. Co., Ltd, Japan)
us Pat 5 356 512 (18 Octohrr 1994) A ceramic green sheet is prepared on a first backing film, after which it is placed onto a second backing film so that it is sandwiched between the two sheets. The green sheet is then transferred to the second backing sheet, after which it is transferred to the stack of ceramic green sheets.
Volume 6 Number 2 1995
109
Munufucturing 6 (1995)
(; 1995 Elsevier Science in Great Britain. All rights
109 Limited reserved
0956-7141’95~$10.00
Abstracts .4bstracts
of US patents are prepared
by Dr R.J. Hand,
Method of making bicycle tubular frame of plastic composite material You, C.-S. (Feng Yuan City, Taichung Hsien, Taiwan) US Put 5 318 742 (7 June 1994) An inner-tube of a bendable and heat-resistant inflatable material is covered with two layers, each composed of a thermoplastic matrix layer and a long fibre reinforcing layer, and placed in an appropriately shaped mould. The moulding tool is heated to a temperature above the melting point of the thermoplastic and the inner-tube is pressurized so that the molten resin is forced into the interstices between the fibres. After cooling, the bicycle tubular frame is removed from the mould.
Pipe joining construction of a bicycle frame Pai, C.-D. (Ta Chia Chen, Taichung Hsien, Taiwan) US Pat 5 318 819 (7 June 1994) Inserts comprising resin-impregnated unidirectional fibres surrounding a foamable material are placed in the joints between each of the frame tubes so that the corresponding extensions from a joint region. A foamable material surrounded by an outer composite layer is placed around the outside of the joint. The whole is then heated so that the foamable materials foam and forcibly couple the tubes and the extensions together.
Method and apparatus for producing fibres Endo, S.. Kawashima, H.. Hirata, K., Misu, Y. and Itoh, A. (Toshiba Monofrax Co., Ltd. Tokyo, Japan) US Pat 5 322 650 (21 June 1994) A120,-Si02 or A1203 Si02-Cr20, ceramic is fused to produce a flow of molten material. At least three water jets are applied, at an angle, to the flow of molten material to generate the fibres.
Method of producing fabric reinforcing matrix for composites Yasui, Y., Anahara, M., Hori. F. and Takeuchi, J. (Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, Japan) C/S
Pat 5 327 621 (I2 July 1994) Yarns are woven between regulating members on a base to produce a lamination composed of a number of layers that contain at least two different directions of yarn. The lamination and regulating members are simultaneously removed from the base; and then the
of Patents Department
of‘ Engineering
Materials,
regulating members are replaced by vertical yarns that form loops. A locking thread is inserted into these loops to produce the fabric reinforcement.
Apparatus for manufacturing a glass and organic composite strand, including blowing device Roncato, G., Fedorowsky, R., Boissonnat, P. and Loubinoux, D. (Vetrotex France, Chambery, France) US Pat 5 328 493 (12
University
of Sh&ield,
UK
surface of the metal to produce a bonding surface. Several composite laminates are laid up over the bonding surface, and heat and pressure and applied to produce the composite shaft.
Method of manufacturing fibre gypsum board Schafer, K.K.. Mlezer, G.M., Scriba, J ., Bhagwat, S.G. and Eisses, J. (Carl Schenck AG, Darmstadt, Germany and Louisiana Pacific Corporation, Portland, OR. USA)
July 1994)
US Pat 5 342 566 (30 August 1994)
The apparatus consists of a die to which glass is supplied by a gravity feed and is heated by the Joule effect. This die is perforated with a series of orifices. There is a means for coating the glass fibres and for combining them into at least one strand. In addition, there is at least one drawing head containing an annular die plate which is perforated with orifices distributed in one or more groups. This die plate is supplied with molten organic thermoplastic material under pressure and organic filaments are drawn from it. The glass strand and the organic filaments then pass through an assembly device where they are combined.
Fibres are mixed with water and an absorbent to minimize the adhesion of the fibres to each other. This mixture is mixed with dry calcined gypsum, the resultant mixture is then formed into a uniform mat, compressed to form a board and dried. An accelerator is added to any of the original components to speed the setting of the board.
Method various (Pfeffer,
of forming composite of glass fibres of filament diameters into a fibrous mat J.R. of Bakersfield, CA, USA) LiS
Pat 5 342 424 (30 August 1994) A second group of glass fibres is directly built up on top of a first group. Gas is passed through the layered groups of fibres so that they are compressed into layers of controlled thickness. The fibres are coated with a synthetic resin and the resin and fibres are cured whilst the gas passes through the fibres. The gas passage means that the resultant composite has a high particle retention ability.
Bonding of thermoplastic composite structures to metal structures McIntire, A.J. and Davis, G.C. (United Technologies Corporation, Hartford, CT, USA) US Pat 5 342 465 (30 August 1994j A method is described for joining a metallic fitting to a thermoplastic shaft to form a drive shaft. The surface of the metallic component is knurled and then a layer of thermoplastic at least as thick as the knurls is moulded over the
COMPOSITES
MANUFACTURING
Method for increasing fibre strength translation in composite pressure vessels using matrix resin formulations containing surface acting agents Decker, O.H., Lloyd, B.A. and Mumford. N.A. (Thiokol Corporation, Ogden, UT, USA) US Pat 5 356 499 ( 18 October 1994) A surface-active agent, which will enhance fibreeresin interactions and thereby reduces variation in performance, is added to a formulation comprising a curable matrix resin, an effective amount of room temperature active resin curing agent and a latent curing agent which can be activated by heat or radiation. A fibre, filament strand or tow is infiltrated with this mixture and the whole is allowed to partially cure to produce a prepreg. A pressure vessel is wound using the prepreg and the latent curing agent is activated to produce the composite pressure vessel.
Method of stacking ceramic green sheets Hosokawa, T. (Murata Mfg. Co., Ltd, Japan)
us Pat 5 356 512 (18 Octohrr 1994) A ceramic green sheet is prepared on a first backing film, after which it is placed onto a second backing film so that it is sandwiched between the two sheets. The green sheet is then transferred to the second backing sheet, after which it is transferred to the stack of ceramic green sheets.
Volume 6 Number 2 1995
109