CA2361761A1 - Method for producing a flat strip - Google Patents
Method for producing a flat strip Download PDFInfo
- Publication number
- CA2361761A1 CA2361761A1 CA002361761A CA2361761A CA2361761A1 CA 2361761 A1 CA2361761 A1 CA 2361761A1 CA 002361761 A CA002361761 A CA 002361761A CA 2361761 A CA2361761 A CA 2361761A CA 2361761 A1 CA2361761 A1 CA 2361761A1
- Authority
- CA
- Canada
- Prior art keywords
- fiber web
- flat strip
- support fiber
- fibers
- binder matrix
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
-
- 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
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
- B29C70/506—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands and impregnating by melting a solid material, e.g. sheet, powder, fibres
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2398/00—Unspecified macromolecular compounds
- B32B2398/20—Thermoplastics
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Composite Materials (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Treatment Of Fiber Materials (AREA)
- Package Frames And Binding Bands (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Continuous Casting (AREA)
- Reinforcement Elements For Buildings (AREA)
- Making Paper Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Press Drives And Press Lines (AREA)
- Adhesive Tapes (AREA)
- Decoration Of Textiles (AREA)
Abstract
The invention relates to a method for producing a flat strip in which a supporting fiber fabric comprised of a multitude of parallelly aligned supporting fibers that are interwoven with cross fibers is embedded in a binder matrix made of synthetic material. According to the invention, the supporting fiber fabric (38) is stiffened using a binder matrix made of thermoplastic material and is sealed against liquid penetration. In order to form the binder matrix, the supporting fiber fabric (38) can be pressed together with a film (40', 40'') made of thermoplastic material, heated and cooled again. In an alternative embodiment, the supporting fiber fabric (38) is firstly impregnated with a preferably aqueous thermoplastic suspension (52) and is subsequently heated while vaporizing the water and melting the thermoplastic material and is cooled again while forming the solidified binder matrix.
Description
METHOD FOR PRODUCING A FLAT STRIP
Description The invention relates to a method for producing a flat strip in which a reinforcing fiber fabric, comprised of a multitude of parallel aligned reinforcing fibers interwoven with cross fibers, is embedded in a binder matrix made of synthetic material.
Reinforcing strips of this type are known for example from W096/21785. These reinforcing strips are employed on longitudinally extending and/or planar building components. The reinforcing lamella comprising a duroplastic (thermosetting) plastic as binder matrix, in particular an epoxy resin, do not allow for formation of bends with small bend radius, so that it is not possible to herewith form angular reinforcements extending over a construction component edge. Angled reinforcements are needed for example for a steel reinforced concrete beam or a steel reinforced concrete T-beam to reinforce the area between the pressure and tensile zone and to avoid thrust and transverse tears.
The~invention is based upon the task of developing a process for manufacture of flat-strip bands, which makes possible a particularly rational manufacture in a continuous process.
For the solution of this task the combination of characteristics set forth in Patent Claims 1 and 11 are proposed. Advantageous embodiments and further developments of the invention can be seen from the dependent claims.
The inventive solution is based upon the concept, that a particularly rational manufacturing method is possible in the case that a thermoplastic synthetic material is used as binder matrix.
A first alternative solution envisions that a film of thermoplastic material is pressed against at least one broad side of the support fiber web, that the thermoplastic material of the film is caused to melt under the influence of heat, that the support fiber material is impregnated with the melt of the thermoplastic material under the influence of pressure and that the thermoplastic material is subsequently cooled while maintaining pressure to form the hardened binder matrix.
In accordance with a preferred embodiment of the invention the support fiber web and the at least one thermoplastic film are pressed, heated and cooled in one continuous process. The support fiber web and the at least one thermoplastic film are thereby preferably drawn off of supply rolls and pressed, heated and cooled along a pass-through segment.__ Herein the support fiber web is preferably conveyed to the pass-through segment in the longitudinal direction of the support fibers.
A further advantageous embodiment of the invention envisions that a protective film is supplementally supplied on the free outer side of the thermoplastic film, that this is conveyed to the support fiber tissue, and during the heating and cooling process is surfaced bonded therewith, preferably releaseably, under the influence of the pressure force. The protective film can likewise be drawn from a supply roll and, together with the thermoplastic film and the support fiber web, be conveyed to the pass-through segment. A preferred embodiment of the invention envisions that the support fiber web, the at least one thermoplastic film and the, in certain cases present, at least one protective film are pressed, heated and cooled between the revolving bands or belts of a double band press. The protective film comprised preferably of a non-melting plastic material ensures that the press apparatus, during the heating process, does not come into contact with the melting thermoplastic material and become soiled therewith. The protective film can be pulled off from the finished flat strip after the pass-through segment, and be rolled onto a separate film roll, for example for reuse . On the other hand, it is possible to leave the protective foil on the finished flat strip and to pull it off at the point of use .
The flat strip can be rolled onto a material roll after the pass-through segment. It is also possible to separate the flat strip into narrower strips with predetermined breadths parallel to the direction of passage, after the pass-through segment, and in certain cases to roll these narrower strips upon a material roll.
It is further possible to store the, in certain cases stripwise-separated flat strips, with formation of flat strip lamella or stack in segments of predetermined length.
The above-described first inventive variant has the advantage, that therewith any of various thicknesses of flat strips can be produced. The thermoplastic film need merely be adjusted in its wall thickness to conform to the thickness - and therewith the receptivity - of the reinforcing fiber web.
A further inventive variant, which is above all suitable for manufacture of thin flat strip bands, envisions that the support fiber web is soaked with a preferably aqueous suspension of finely distributed thermoplastic synthetic material particles, that the soaked support fiber web is subsequently dried under the influence of heat, that the thermoplastic material deposited upon the support fiber web is then caused to melt under the influence of heat and then cooled again with formation of solidified binder matrix. Advantageously, the support fiber web drawn off of the roll is conveyed through a suspension mixture and subsequently through a vaporization segment, a melting segment and a cooling segment. The support fiber web can in addition be pressed or calendared prior to, during or after the solidification of the binder matrix. The flat bands produced in this manner can be surface bonded into multiple layers under the influence of pressure and heat.
The flat strips produced in accordance with the inventive process exhibit a plurality of parallel oriented reinforcing fibers, which could be interwoven with transverse fibers for formation of a support fiber web, and which together with the transverse fibers are embedded in a binder matrix of thermoplastic material, wherein the binder matrix penetrates the free interstitial spaces of the support fiber web. The support fiber web embedded in the binder matrix can have a releaseable protective film provided on at least one broad side.
For the formation of the binder matrix a thermoplastic material could be selected from the group consisting of polyolefins, vinyl polymers, polyamides, polyacetals, polycarbonates, polyurethanes and ionomers. The reinforcing fibers preferably contain carbon fibers or are carbon fibers. The support fibers and the transverse fibers can also be formed of, or contain, aramid fibers, glass fibers or polypropylene fibers.
As protective films one could consider for example a duroplastic synthetic material such as a polyester resin or an elastomeric plastic such as silicon-rubber or silicon paper.
In the following the invention will be described in greater detail on the basis of the embodiment schematically represented in the figures. There is shown:
Fig. 1 a flow schematic for the manufacture of a flat strip lamella with utilization of a double band press;
Fig. 2 a flow schematic for the manufacture of a flat strip lamella using a suspension mixture.
The process described in the following is designed for manufacture of flat strips and flat strip lamellas or laminates, which exhibit a composite structure of a plurality of flexible or bendable support fibers oriented parallel to each other, a certain proportion of transverse fibers interwoven perpendicular to the support fibers, and a stabilizing binder matrix of a thermoplastic material. The thermoplastic binder matrix ensures that the flat strip is relatively stiff at the temperature of use and is plastically deformable upon heating to' a temperature above the glass transition point.
The arrangement schematically represented in Fig. 1 for manufacture of this type of flat strip includes a double band press 20 with two press bands 24 running in opposite directions over direction-changing rollers 22, of which the belt sides 26 facing each other define a pass-through segment 28 for a continuous strip 30 to be processed in the below described manner, and which band press presses against the broad surfaces of the continuous strip. For forming the continuous strip 30 a support fiber web 38, two thermoplastic films 40', 40 " and two protective films 42', 42" are drawn off of five supply rolls 32, 34' , 34" , 36' , 36" and conveyed, with their broad surfaces contacting, into the inlet side of the direction-changing rollers 22 of the double band press 20 in the shown manner. The continuous strip 30 passes along the pass-through segment 28 with maintenance of the pressure force of the press bands 26, passing first through a heating segment 44, along which the thermoplastic material of the thermoplastic films 40', 40 " is caused to melt and pressed into the free spaces of the support fiber web. The protective films 42' , 42' ' ensure that the press bands 26 are not contaminated by the melting thermoplastic material. In the further course of the pass-through segment 28 the continuous strip passes through a cooling segment 46, in which the thermoplastic material is caused to solidify with formation of a binder matrix within the support fiber web. Subsequent to the double band press 20 the flat strip produced in the manner can, as shown, be wound upon a roll 48. Alternatively thereto the flat strip can also be separated into strips parallel to the pass through direction, and be rolled onto different rolls or, with formation of flat strip lamellas, be stacked or stored. With the described process it is possible to produce flat strips of various thicknesses as required. In this case it need merely be observed, that the thickness of the thermoplastic films 40' , 40' and therewith the amount of the thermoplastic material available for use, conforms to the thickness of the support fiber web 38 -and therewith the receiving volume in the empty spaces of the web.
The arrangement shown in schematic manner in Fig. 2 is, in contrast thereto, only designed for and suitable for manufacture of relatively thin-walled flat strips. The support fiber web 38 drawn from the supply roll 32 is, in this case, drawn over direction changing rollers 50 through a suspension mixture 52, which is comprised of a preferably aqueous suspension of finely divided thermoplastic plastic particles. The support fiber web 38 is soaked in the mixture 52 of the aqueous thermoplastic suspension and is conveyed as a continuous strip 30 along the pass-through segment 54, first to a vaporization station 56 in which the water is vaporized under the influence of heat 58 in the direction of the arrows 60 out of the continuous strip 30.
Subsequently, the continuous strip 30 passes through the heating segment 62, in which the thermoplastic particles retained in the support fiber band are caused to melt. In the subsequent cooling segment the molten thermoplastic material is caused to solidify to form the binder matrix. In the roller press (calendar) 66 the continuous strip receives its final thickness and is then wound upon a material roll 48. It is also possible in this case to divide the continuous strip, subsequent to the press 66, parallel to the pass-through direction 68, after which it is either wound or stored as flat strip stacks or lamellas.
In summary the following is concluded: The invention relates to a method for producing a flat strip in which a reinforcing fiber fabric, comprised of a multitude of parallel aligned reinforcing fibers that are interwoven with cross-fibers, is embedded in a binder matrix made of synthetic material. According to the invention, the reinforcing fiber fabric 38 is stiffened using a binder matrix made of thermoplastic material and is sealed against liquid penetration. In order to form the binder matrix, the reinforcing fiber fabric 38 can be pressed together with a film 40'. 40 " made of thermoplastic material, heated and cooled again. In an alternative embodiment, the reinforcing fiber fabric 38 is firstly impregnated with a preferably aqueous thermoplastic suspension 52, is subsequently heated while evaporating the water and melting the thermoplastic material, and is cooled again to form the solidified binder matrix.
Description The invention relates to a method for producing a flat strip in which a reinforcing fiber fabric, comprised of a multitude of parallel aligned reinforcing fibers interwoven with cross fibers, is embedded in a binder matrix made of synthetic material.
Reinforcing strips of this type are known for example from W096/21785. These reinforcing strips are employed on longitudinally extending and/or planar building components. The reinforcing lamella comprising a duroplastic (thermosetting) plastic as binder matrix, in particular an epoxy resin, do not allow for formation of bends with small bend radius, so that it is not possible to herewith form angular reinforcements extending over a construction component edge. Angled reinforcements are needed for example for a steel reinforced concrete beam or a steel reinforced concrete T-beam to reinforce the area between the pressure and tensile zone and to avoid thrust and transverse tears.
The~invention is based upon the task of developing a process for manufacture of flat-strip bands, which makes possible a particularly rational manufacture in a continuous process.
For the solution of this task the combination of characteristics set forth in Patent Claims 1 and 11 are proposed. Advantageous embodiments and further developments of the invention can be seen from the dependent claims.
The inventive solution is based upon the concept, that a particularly rational manufacturing method is possible in the case that a thermoplastic synthetic material is used as binder matrix.
A first alternative solution envisions that a film of thermoplastic material is pressed against at least one broad side of the support fiber web, that the thermoplastic material of the film is caused to melt under the influence of heat, that the support fiber material is impregnated with the melt of the thermoplastic material under the influence of pressure and that the thermoplastic material is subsequently cooled while maintaining pressure to form the hardened binder matrix.
In accordance with a preferred embodiment of the invention the support fiber web and the at least one thermoplastic film are pressed, heated and cooled in one continuous process. The support fiber web and the at least one thermoplastic film are thereby preferably drawn off of supply rolls and pressed, heated and cooled along a pass-through segment.__ Herein the support fiber web is preferably conveyed to the pass-through segment in the longitudinal direction of the support fibers.
A further advantageous embodiment of the invention envisions that a protective film is supplementally supplied on the free outer side of the thermoplastic film, that this is conveyed to the support fiber tissue, and during the heating and cooling process is surfaced bonded therewith, preferably releaseably, under the influence of the pressure force. The protective film can likewise be drawn from a supply roll and, together with the thermoplastic film and the support fiber web, be conveyed to the pass-through segment. A preferred embodiment of the invention envisions that the support fiber web, the at least one thermoplastic film and the, in certain cases present, at least one protective film are pressed, heated and cooled between the revolving bands or belts of a double band press. The protective film comprised preferably of a non-melting plastic material ensures that the press apparatus, during the heating process, does not come into contact with the melting thermoplastic material and become soiled therewith. The protective film can be pulled off from the finished flat strip after the pass-through segment, and be rolled onto a separate film roll, for example for reuse . On the other hand, it is possible to leave the protective foil on the finished flat strip and to pull it off at the point of use .
The flat strip can be rolled onto a material roll after the pass-through segment. It is also possible to separate the flat strip into narrower strips with predetermined breadths parallel to the direction of passage, after the pass-through segment, and in certain cases to roll these narrower strips upon a material roll.
It is further possible to store the, in certain cases stripwise-separated flat strips, with formation of flat strip lamella or stack in segments of predetermined length.
The above-described first inventive variant has the advantage, that therewith any of various thicknesses of flat strips can be produced. The thermoplastic film need merely be adjusted in its wall thickness to conform to the thickness - and therewith the receptivity - of the reinforcing fiber web.
A further inventive variant, which is above all suitable for manufacture of thin flat strip bands, envisions that the support fiber web is soaked with a preferably aqueous suspension of finely distributed thermoplastic synthetic material particles, that the soaked support fiber web is subsequently dried under the influence of heat, that the thermoplastic material deposited upon the support fiber web is then caused to melt under the influence of heat and then cooled again with formation of solidified binder matrix. Advantageously, the support fiber web drawn off of the roll is conveyed through a suspension mixture and subsequently through a vaporization segment, a melting segment and a cooling segment. The support fiber web can in addition be pressed or calendared prior to, during or after the solidification of the binder matrix. The flat bands produced in this manner can be surface bonded into multiple layers under the influence of pressure and heat.
The flat strips produced in accordance with the inventive process exhibit a plurality of parallel oriented reinforcing fibers, which could be interwoven with transverse fibers for formation of a support fiber web, and which together with the transverse fibers are embedded in a binder matrix of thermoplastic material, wherein the binder matrix penetrates the free interstitial spaces of the support fiber web. The support fiber web embedded in the binder matrix can have a releaseable protective film provided on at least one broad side.
For the formation of the binder matrix a thermoplastic material could be selected from the group consisting of polyolefins, vinyl polymers, polyamides, polyacetals, polycarbonates, polyurethanes and ionomers. The reinforcing fibers preferably contain carbon fibers or are carbon fibers. The support fibers and the transverse fibers can also be formed of, or contain, aramid fibers, glass fibers or polypropylene fibers.
As protective films one could consider for example a duroplastic synthetic material such as a polyester resin or an elastomeric plastic such as silicon-rubber or silicon paper.
In the following the invention will be described in greater detail on the basis of the embodiment schematically represented in the figures. There is shown:
Fig. 1 a flow schematic for the manufacture of a flat strip lamella with utilization of a double band press;
Fig. 2 a flow schematic for the manufacture of a flat strip lamella using a suspension mixture.
The process described in the following is designed for manufacture of flat strips and flat strip lamellas or laminates, which exhibit a composite structure of a plurality of flexible or bendable support fibers oriented parallel to each other, a certain proportion of transverse fibers interwoven perpendicular to the support fibers, and a stabilizing binder matrix of a thermoplastic material. The thermoplastic binder matrix ensures that the flat strip is relatively stiff at the temperature of use and is plastically deformable upon heating to' a temperature above the glass transition point.
The arrangement schematically represented in Fig. 1 for manufacture of this type of flat strip includes a double band press 20 with two press bands 24 running in opposite directions over direction-changing rollers 22, of which the belt sides 26 facing each other define a pass-through segment 28 for a continuous strip 30 to be processed in the below described manner, and which band press presses against the broad surfaces of the continuous strip. For forming the continuous strip 30 a support fiber web 38, two thermoplastic films 40', 40 " and two protective films 42', 42" are drawn off of five supply rolls 32, 34' , 34" , 36' , 36" and conveyed, with their broad surfaces contacting, into the inlet side of the direction-changing rollers 22 of the double band press 20 in the shown manner. The continuous strip 30 passes along the pass-through segment 28 with maintenance of the pressure force of the press bands 26, passing first through a heating segment 44, along which the thermoplastic material of the thermoplastic films 40', 40 " is caused to melt and pressed into the free spaces of the support fiber web. The protective films 42' , 42' ' ensure that the press bands 26 are not contaminated by the melting thermoplastic material. In the further course of the pass-through segment 28 the continuous strip passes through a cooling segment 46, in which the thermoplastic material is caused to solidify with formation of a binder matrix within the support fiber web. Subsequent to the double band press 20 the flat strip produced in the manner can, as shown, be wound upon a roll 48. Alternatively thereto the flat strip can also be separated into strips parallel to the pass through direction, and be rolled onto different rolls or, with formation of flat strip lamellas, be stacked or stored. With the described process it is possible to produce flat strips of various thicknesses as required. In this case it need merely be observed, that the thickness of the thermoplastic films 40' , 40' and therewith the amount of the thermoplastic material available for use, conforms to the thickness of the support fiber web 38 -and therewith the receiving volume in the empty spaces of the web.
The arrangement shown in schematic manner in Fig. 2 is, in contrast thereto, only designed for and suitable for manufacture of relatively thin-walled flat strips. The support fiber web 38 drawn from the supply roll 32 is, in this case, drawn over direction changing rollers 50 through a suspension mixture 52, which is comprised of a preferably aqueous suspension of finely divided thermoplastic plastic particles. The support fiber web 38 is soaked in the mixture 52 of the aqueous thermoplastic suspension and is conveyed as a continuous strip 30 along the pass-through segment 54, first to a vaporization station 56 in which the water is vaporized under the influence of heat 58 in the direction of the arrows 60 out of the continuous strip 30.
Subsequently, the continuous strip 30 passes through the heating segment 62, in which the thermoplastic particles retained in the support fiber band are caused to melt. In the subsequent cooling segment the molten thermoplastic material is caused to solidify to form the binder matrix. In the roller press (calendar) 66 the continuous strip receives its final thickness and is then wound upon a material roll 48. It is also possible in this case to divide the continuous strip, subsequent to the press 66, parallel to the pass-through direction 68, after which it is either wound or stored as flat strip stacks or lamellas.
In summary the following is concluded: The invention relates to a method for producing a flat strip in which a reinforcing fiber fabric, comprised of a multitude of parallel aligned reinforcing fibers that are interwoven with cross-fibers, is embedded in a binder matrix made of synthetic material. According to the invention, the reinforcing fiber fabric 38 is stiffened using a binder matrix made of thermoplastic material and is sealed against liquid penetration. In order to form the binder matrix, the reinforcing fiber fabric 38 can be pressed together with a film 40'. 40 " made of thermoplastic material, heated and cooled again. In an alternative embodiment, the reinforcing fiber fabric 38 is firstly impregnated with a preferably aqueous thermoplastic suspension 52, is subsequently heated while evaporating the water and melting the thermoplastic material, and is cooled again to form the solidified binder matrix.
Claims (20)
1. Process for production of a flat strip, wherein a support fiber web comprised of a plurality of parallel oriented reinforcing fibers with transverse fibers interwoven is embedded in a plastic binder matrix, thereby characterized, that a film (40', 40'') of thermoplastic material is pressed against at least one broad surface of the support fiber web (38), that the thermoplastic material of the thermoplastic film (40', 40'') is caused to melt under the influence of heat, that the support fiber web (38) is impregnated with the melt of the thermoplastic material under the influence of pressure and that subsequently under maintenance of the pressure force the thermoplastic material is cooled with formation of hardened binder matrix.
2. Process according to Claim 1, thereby characterized, that the support fiber web (38) and the at least one thermoplastic film (40', 40'') are drawn from supply rollers (32, 34', 34'') and are pressed, heated and cooled along a pass-through segment (28).
3. Process according to one of Claims 1 and 2, thereby characterized, that the support fiber web (38) is conveyed to the pass-through segment (28) in the longitudinal direction of the reinforcing fibers.
4. Process according to one of Claims 1 through 3, thereby characterized, that a protective film (42', 42'') is supplementally provided on the side of the thermoplastic film (40', 40'') facing away from the support fiber web, that these are supplied to the support fiber web, and that during the heating and cooling process under the influence of pressure force the protective film is surface-bonded to the flat strip, preferably releasably.
5. Process according to Claim 4, thereby characterized, that the protective film (42', 42") is drawn from a supply roll (36', 36") and conveyed to the common pass through segment (28).
6. Process according to one of Claims 1 through 5, thereby characterized, that flat strip (30) is wound upon at least one material roll (48) subsequent to the pass-through segment (28).
7. Process according to one of Claims 1 through 6, thereby characterized, that subsequent to the pass through segment (28) the flat strip (30) is subdivided into strips aligned parallel to the pass-through direction.
8. Process according to one of Claims 1 through 7, thereby characterized, that the flat strip (30) subsequent to the pass through segment (28) is stored with formation of flat strip lamellas or stacks.
9. Process according to one of Claims 1 through 8, thereby characterized, that the support fiber web (38), the at least one thermoplastic film (40' 40") and the optional protective film (42', 42") are pressed, heated and cooled between two rotating press bands (24) of a double band press (20).
10. Process for production of a flat strip, wherein a support fiber web comprised of a plurality of parallel oriented reinforcing fibers with interwoven transverse fibers is embedded in a binder matrix of plastic, thereby characterized, that the support fiber web (38) is permeated with a preferably aqueous suspension (52) of finely divided thermoplastic plastic particles, that the thus permeated support fiber web is dried under the influence of heat, that the thermoplastic material remaining upon the dried support fiber web is caused to melt under the influence of heat and subsequently cooled again with formation of solidified binder matrix.
11. Process according to Claim 10, thereby characterized, that a support fiber web (38) drawn from a roll is passed through a suspension mixture (52).
12. Process according to Claim 10 or 11, thereby characterized, that the flat strip (30) is pressed or calendared prior to, during or subsequent to the hardening of the binder matrix.
13. Process according to one of Claims 1 through 12, thereby characterized, that multiple individual flat strips are surface bonded with each other under the influence of pressure and heat for increasing the wall thickness.
14. Flat strip, comprised of a plurality of parallel oriented reinforcing fibers which are interwoven with transverse fibers for forming a support fiber web (38) and which together with the transverse fibers are embedded in a binder matrix of thermoplastic material, wherein the binder matrix permeates the free interstitial spaces of the support fiber web (38).
15. Flat strip lamella according to Claim 14, thereby characterized, that the support fiber web embedded in the binder matrix is provided on at least one broad surface with a preferably releaseable protective film.
16. Flat strip lamella according to Claim 14 or 15, thereby characterized, that a thermoplastic material is selected from the group consisting of polyolefins, vinyl polymers, polyamides, polyacetals, polycarbonates, polyurethanes and ionomers.
17. Flat strip lamella according to one of Claims 14 through 16, thereby characterized, that the reinforcing fibers consist of or include carbon fibers.
18. Flat strip lamella according to one of Claims 14 through 17, thereby characterized, that the reinforcing fibers comprise or contain aramid fibers, glass fibers or polypropylene fibers.
19. Flat strip lamella according to one of Claims 15 through 18, thereby characterized, that the protective film is comprised of a duroplastic, such as polyester, or of an elastomer, such as silicon-rubber or of silicon treated paper.
20. Use of the process according to one of Claims 1 through 13, for manufacture of flat strip lamella for reinforcing of load bearing or load transmitting construction components preferably of cement, mortar, plastic or wood.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19904185A DE19904185A1 (en) | 1999-02-02 | 1999-02-02 | Process for the production of a flat tape |
| DE19904185.7 | 1999-02-02 | ||
| PCT/EP1999/009541 WO2000046461A1 (en) | 1999-02-02 | 1999-12-06 | Method for producing a flat strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2361761A1 true CA2361761A1 (en) | 2000-08-10 |
Family
ID=7896204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002361761A Abandoned CA2361761A1 (en) | 1999-02-02 | 1999-12-06 | Method for producing a flat strip |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP1149215B1 (en) |
| JP (1) | JP2002536212A (en) |
| KR (1) | KR20010113668A (en) |
| CN (1) | CN1128912C (en) |
| AT (1) | ATE234978T1 (en) |
| CA (1) | CA2361761A1 (en) |
| DE (2) | DE19904185A1 (en) |
| DK (1) | DK1149215T3 (en) |
| ES (1) | ES2195643T3 (en) |
| HK (1) | HK1042128A1 (en) |
| PT (1) | PT1149215E (en) |
| WO (1) | WO2000046461A1 (en) |
Cited By (5)
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| US20120180940A1 (en) * | 2008-05-14 | 2012-07-19 | Yves Bader | Method to produce stab and ballistic resistant composite structures |
| US9409321B2 (en) | 2008-11-26 | 2016-08-09 | Airbus Operations Gmbh | Moulded body for producing a fibre composite component |
| CN106273989A (en) * | 2016-07-27 | 2017-01-04 | 青岛集威新材料科技有限公司 | The shaped device of a kind of fiber reinforced thermolplastic composite material plate and forming method thereof |
| US11008050B2 (en) | 2016-12-30 | 2021-05-18 | Sabic Global Technologies B.V. | Hybrid structures and methods of making the same |
| US11603142B2 (en) | 2014-06-16 | 2023-03-14 | Sabic Global Technologies B.V. | Structural body of a vehicle having an energy absorbing device and a method of forming the energy absorbing device |
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| US6464003B2 (en) | 2000-05-18 | 2002-10-15 | Western Well Tool, Inc. | Gripper assembly for downhole tractors |
| US6793274B2 (en) * | 2001-11-14 | 2004-09-21 | L&L Products, Inc. | Automotive rail/frame energy management system |
| US7043815B2 (en) | 2002-01-25 | 2006-05-16 | L & L Products, Inc. | Method for applying flowable materials |
| US6811864B2 (en) | 2002-08-13 | 2004-11-02 | L&L Products, Inc. | Tacky base material with powder thereon |
| US7479245B2 (en) | 2003-06-26 | 2009-01-20 | Zephyros, Inc. | Process for applying a material to a member |
| GB0402221D0 (en) | 2004-02-02 | 2004-03-03 | L & L Products Inc | Improvements in or relating to composite materials |
| US7180027B2 (en) | 2004-03-31 | 2007-02-20 | L & L Products, Inc. | Method of applying activatable material to a member |
| ITTO20070557A1 (en) * | 2007-07-27 | 2009-01-28 | Alenia Aeronautica Spa | PROCESS OF MANUFACTURE OF A CURVED ELEMENT IN COMPOSITE MATERIAL |
| CN101992579B (en) * | 2010-08-31 | 2013-04-10 | 东莞市爱克斯曼机械有限公司 | Hot-melt adhesive non-woven fabric based adhesion processing equipment |
| KR101417245B1 (en) | 2011-01-14 | 2014-07-16 | (주)엘지하우시스 | Complex sheet manufacturing device with excellent saturation property and method of manufacturing high strength complex sheet |
| US9447648B2 (en) | 2011-10-28 | 2016-09-20 | Wwt North America Holdings, Inc | High expansion or dual link gripper |
| ITMI20120245A1 (en) * | 2012-02-20 | 2013-08-21 | Automobili Lamborghini Spa | PROCESS TO MANUFACTURE CARBON FIBER FABRIC AND FABRIC MANUFACTURED WITH THIS PROCESS |
| GB201207481D0 (en) | 2012-04-26 | 2012-06-13 | Zephyros Inc | Applying flowable materials to synthetic substrates |
| CN102765229B (en) * | 2012-07-27 | 2015-03-04 | 深圳市科聚新材料有限公司 | Compound plastic cloth as well as application and application method thereof |
| CN102765230B (en) * | 2012-07-27 | 2015-02-04 | 深圳市科聚新材料有限公司 | Compound fiber cloth as well as application and application method thereof |
| CN103804888B (en) * | 2012-11-07 | 2017-11-10 | 合肥杰事杰新材料股份有限公司 | A kind of continuous glass-fiber enhancing Thermoplastic polyurethane composite material and preparation method thereof |
| CN104015444A (en) * | 2013-03-01 | 2014-09-03 | 上海杰事杰新材料(集团)股份有限公司 | Thermoplastic polyurethane/fiber composite soft cloth and preparation method thereof |
| CN103112234A (en) * | 2013-03-04 | 2013-05-22 | 苏州裕克施乐塑料制品有限公司 | Composite material sheet production method and dual-tensioning device of composite material sheet |
| US9488020B2 (en) | 2014-01-27 | 2016-11-08 | Wwt North America Holdings, Inc. | Eccentric linkage gripper |
| DE102014105806A1 (en) * | 2014-02-25 | 2015-08-27 | Elringklinger Ag | Method for producing a functional element for flat seals and functional element for flat gaskets |
| CN105346200A (en) * | 2015-12-01 | 2016-02-24 | 陕西天策新材料科技有限公司 | Thermoplastic prepreg prepared through continuous laminating method and method thereof |
| GB2569151B (en) * | 2017-12-07 | 2021-01-27 | Jaguar Land Rover Ltd | Reformable article |
| DE102019218775A1 (en) * | 2019-12-03 | 2021-06-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for the production of a moldable thermoplastic, continuous fiber-reinforced composite structure, moldable composite structure and device for the production thereof |
| CN111946083B (en) * | 2020-07-30 | 2021-11-05 | 陕西省建筑科学研究院有限公司 | Cement mortar surface layer of polypropylene packing belt net for reinforcing masonry structure and construction method |
| KR102353271B1 (en) * | 2021-04-02 | 2022-01-20 | 삼우기업 주식회사 | Compression sheet member made of thermoplastic lightweight composites material, manufacutre appratus and manufacutre method thereof |
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| US4052521A (en) * | 1974-09-19 | 1977-10-04 | Serge Ferrari | Coating and calendaring of 2-dimensionally tensioned fabric |
| GB1522039A (en) * | 1975-11-27 | 1978-08-23 | Ciba Geigy Ag | Method of producing reinforced plastics material |
| CH626214GA3 (en) * | 1979-02-07 | 1981-11-13 | ||
| DE4136706A1 (en) * | 1991-11-07 | 1993-05-13 | Hoechst Ag | DEVICE AND METHOD FOR PRODUCING A NUMBER OF TWO OR MULTILAYER SINGLE COMPOUNDS |
| CH687399A5 (en) * | 1992-04-06 | 1996-11-29 | Eidgenoessische Materialpruefung | Method and apparatus for Schubverstaerkung on a building part. |
| US5649398A (en) * | 1994-06-10 | 1997-07-22 | Hexcel-Fyfe L.L.C. | High strength fabric reinforced walls |
| WO1996021785A1 (en) * | 1995-01-09 | 1996-07-18 | Eidgenössische Materialprüfungs- und Forschungsanstalt Empa | Securing of reinforcing strips |
| US5657595A (en) * | 1995-06-29 | 1997-08-19 | Hexcel-Fyfe Co., L.L.C. | Fabric reinforced beam and column connections |
| EP0859085B1 (en) * | 1995-11-01 | 2005-03-16 | Mitsubishi Rayon Co., Ltd. | Method of repairing/reinforcing existing structures and anisotropic woven fabrics used therefor |
| DE19541406C1 (en) * | 1995-11-07 | 1996-10-17 | Held Kurt | Continuous resin-bonded laminate simple prodn. for electrical industry |
| GB9601517D0 (en) * | 1996-01-25 | 1996-03-27 | Scapa Group Plc | Masonry tape |
| DE19733065A1 (en) * | 1997-01-23 | 1998-07-30 | Sika Ag | Ribbon slat for reinforcing components and processes for their production |
-
1999
- 1999-02-02 DE DE19904185A patent/DE19904185A1/en not_active Withdrawn
- 1999-12-06 DE DE59904677T patent/DE59904677D1/en not_active Expired - Fee Related
- 1999-12-06 CN CN99816007A patent/CN1128912C/en not_active Expired - Fee Related
- 1999-12-06 WO PCT/EP1999/009541 patent/WO2000046461A1/en not_active Application Discontinuation
- 1999-12-06 PT PT99959383T patent/PT1149215E/en unknown
- 1999-12-06 CA CA002361761A patent/CA2361761A1/en not_active Abandoned
- 1999-12-06 DK DK99959383T patent/DK1149215T3/en active
- 1999-12-06 ES ES99959383T patent/ES2195643T3/en not_active Expired - Lifetime
- 1999-12-06 JP JP2000597512A patent/JP2002536212A/en active Pending
- 1999-12-06 KR KR1020017009590A patent/KR20010113668A/en not_active Application Discontinuation
- 1999-12-06 AT AT99959383T patent/ATE234978T1/en not_active IP Right Cessation
- 1999-12-06 EP EP99959383A patent/EP1149215B1/en not_active Expired - Lifetime
-
2002
- 2002-05-31 HK HK02104107.0A patent/HK1042128A1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120180940A1 (en) * | 2008-05-14 | 2012-07-19 | Yves Bader | Method to produce stab and ballistic resistant composite structures |
| US9409321B2 (en) | 2008-11-26 | 2016-08-09 | Airbus Operations Gmbh | Moulded body for producing a fibre composite component |
| US11603142B2 (en) | 2014-06-16 | 2023-03-14 | Sabic Global Technologies B.V. | Structural body of a vehicle having an energy absorbing device and a method of forming the energy absorbing device |
| CN106273989A (en) * | 2016-07-27 | 2017-01-04 | 青岛集威新材料科技有限公司 | The shaped device of a kind of fiber reinforced thermolplastic composite material plate and forming method thereof |
| US11008050B2 (en) | 2016-12-30 | 2021-05-18 | Sabic Global Technologies B.V. | Hybrid structures and methods of making the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59904677D1 (en) | 2003-04-24 |
| JP2002536212A (en) | 2002-10-29 |
| ATE234978T1 (en) | 2003-04-15 |
| DK1149215T3 (en) | 2003-07-14 |
| EP1149215A1 (en) | 2001-10-31 |
| DE19904185A1 (en) | 2000-08-03 |
| WO2000046461A1 (en) | 2000-08-10 |
| ES2195643T3 (en) | 2003-12-01 |
| HK1042128A1 (en) | 2002-08-02 |
| KR20010113668A (en) | 2001-12-28 |
| PT1149215E (en) | 2003-07-31 |
| EP1149215B1 (en) | 2003-03-19 |
| CN1128912C (en) | 2003-11-26 |
| CN1334892A (en) | 2002-02-06 |
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Legal Events
| Date | Code | Title | Description |
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| FZDE | Discontinued |