DK176227B1

DK176227B1 - Method of producing beam containing recycled longitudinal glass fibers involves placing cut-up reused glass fibers in a mold and filling the mold with liquid binder which is hardened

Info

Publication number: DK176227B1
Application number: DK200201794A
Authority: DK
Inventors: Joergen Flindt Mikkelsen
Original assignee: Joergen Flindt Mikkelsen
Priority date: 2002-11-20
Filing date: 2002-11-20
Publication date: 2007-03-19
Also published as: DK200201794A

Abstract

The re-used glass fiber lengths (4) are cut into suitable dimensions in relation to the length of the beam (2). The width of the glass fiber strips is less than that of the beam and of suitable length. The cut-up re-used glass fibers are placed in a mold so that it is filled with shortly cut-up glass fiber material (6) and is then completed with a liquid binder, which subsequently hardens.

Description

i DK 176227 B1in DK 176227 B1

Den foreliggende opfindelse angår en fremgangsmåde til frembringelse af bærende bjælker, hvor bjælker består af et langsgående fibermateriale og mindst et udfyldningsmateriale, hvor det langsgående fibermateriale hovedsageligt forløber i bjælkens længderetning.The present invention relates to a method of producing supporting beams wherein beams consist of a longitudinal fiber material and at least one filling material, the longitudinal fiber material extending mainly in the longitudinal direction of the beam.

55

Opfindelsen angår ligeledes en bjælke med bærende egenskaber, hvor bjælken indeholder langsgående fibre, hvor bjælken indeholder et udfyldningsmateriale, hvor de langsgående fibre er fikseret af et bindemiddel.The invention also relates to a beam having load-bearing properties, the beam containing longitudinal fibers, the beam containing a filling material, wherein the longitudinal fibers are fixed by a binder.

10 US 3,783,563 beskriver frembringelse af konstruktionselementer til bygninger støbt af et plastmateriale, der er forstærket med glasfiber. Her beskrives fremstilling af forskellige bærende moduler, og deres sammenkobling i forbindelse med bygningsopførelse.US 3,783,563 discloses the production of structural elements for buildings molded from a glass-reinforced plastic material. This describes the manufacture of various load-bearing modules and their interconnection in connection with building construction.

Fra blandt andet US 6,199,778 er det kendt, at glasfiber kan genanvendes som et 15 fyldmateriale efter en knusning og separering i henholdsvis glas og bindemiddel. Genbrugsglasfiber findeles til en maksimal størrelse på få millimeter.From, among others, US 6,199,778, it is known that fiberglass can be recycled as a filler after a crushing and separation into glass and binder, respectively. Recycled fiberglass is comminuted to a maximum size of a few millimeters.

En proces til findeling og separering er dyr og besværlig, og processen medfører et stort energiforbrug. Derfor deponeres næsten alt glasfiber affald. Der fremkommer 20 meget store mængder glasfiber affald ved f. eks produktion af vindmøllevinger, men også bortskaffelse af kasserede produkter, såsom glasfiberbåde, svævefly og nedslidte vindmøllevinger udgør et voksende problem. Ud fra at der næsten ikke sker nogen nedbrydning i naturen af glasfiber, er en deponering en udsættelse af problemet til ud i fremtiden.A process of comminution and separation is expensive and cumbersome, and the process entails a great deal of energy consumption. Therefore, almost all fiberglass waste is landfilled. 20 very large quantities of fiberglass waste are produced by, for example, the production of wind turbine blades, but also the disposal of discarded products, such as fiberglass boats, gliders and worn-out wind turbine blades is a growing problem. Given that there is virtually no degradation in the nature of fiberglass, a deposit is a postponement of the problem into the future.

2525

Det er opfindelsens formål at opnå en fremgangsmåde til genanvendelse af glasfiber til fremstilling af bærende bjælker, hvor formålet ligeledes omfatter færdige bjælker, som er fremstillet af genbrugsglasfiber, hvor genbrugsglasfiberens styrkeegenskaber udnyttes i den færdige bjælke.It is an object of the invention to provide a method for recycling fiberglass for the production of load-bearing beams, the purpose of which also includes finished beams made of recycled glass fiber, where the strength properties of the recycled glass fiber are utilized in the finished beam.

Det kan opnås med en fremgangsmåde, som den der er beskrevet i indledningen, hvis fremgangsmåden omfatter, at det langsgående fibermateriale indeholder genbrugsglasfiber, hvor genbrugsglasfiber kan opskæres i størst mulig længde i forhold til en bjæl- 30 2 DK 176227 B1 ke, hvor genbrugsglasfiber kan opskæres til en bredde, der er mindre end bjælkens bredde, hvor den opskåme genbrugsglasfiber kan anbringes i en form, hvor formen ligeledes opfyldes med opfyldningsmateriale i form afkort opskåret genbrugsglasfiber, hvor formens hulrum kan udfyldes med et flydende bindemiddel, der efterfølgende 5 hærder.It can be achieved by a method such as that described in the preamble, if the method comprises the longitudinal fibrous material containing recycled fiberglass, where recycled fiberglass can be cut to the greatest possible length relative to a beam, where recycled fiberglass can be is cut to a width less than the width of the beam where the sheared recycled fiberglass can be placed in a mold where the mold is also filled with filler material in the form short cut recycled fiberglass, where the mold cavity can be filled with a liquid binder which subsequently hardens.

Herved kan opnås genanvendelse af store stykker kasseret glasfiber, idet glasfiber-stykkerne udnyttes så store som muligt i en form, hvor man primært tilgodeser, at glas-fiberstykkeme i længderetningen skal udfylde formen til at danne en færdig bjælke.Hereby can be achieved the reuse of large pieces of discarded fiberglass, the fiberglass pieces being utilized as large as possible in a form where it is primarily assumed that the longitudinal glass fiber pieces must fill the mold to form a finished beam.

10 Ved at bjælken indeholder langsgående stykker af genbrugsglasfiber kan opnås ekstremt stor bæreevne af den færdige bjælke. I hulrum, der opstår under opfyldning af formen mellem de forholdsvis lange udskårne stykker kan der i formens centrale del være plads til optagelse af kortere stykker af opskåret glasfiberaffald. Ligeledes kan der opfyldes med kasserede glasfibermåtter, der er afklippet for eksempel under en 15 produktion af vindmøllevinger. Bindemidlet kan ligeledes være tilsat pulveriseret glas fiber inden bindemidlet bringes til at hærde. Efter fyldningen af formen vil bindemidlet reagere og kemisk danne en mekanisk fastlåsning af formens indhold af større glasfiberstykker, hvorefter der dannes en massiv bjælke, hvis primære styrkeegenskaber dannes af de langsgående stykker af genbrugsglasfiber.10 By incorporating longitudinal pieces of recycled fiberglass, extremely high bearing capacity of the finished beam can be achieved. In voids that arise during filling of the mold between the relatively long cut pieces, there may be space in the central part of the mold for accommodating shorter pieces of cut fiberglass waste. Likewise, discarded fiberglass mats which are cut for example during a production of wind turbine blades can be met. The binder may also be added with powdered glass fiber before the binder is cured. After filling the mold, the binder will react and chemically form a mechanical locking of the mold's content of larger fiberglass pieces, after which a solid beam is formed whose primary strength properties are formed by the longitudinal pieces of recycled fiberglass.

2020

Med fordel kan længder af opskåret glasfiber, der svarer til formens længde primært anbringes langs formens langsgående vægge. Herved kan opnås, at længderne af opskåret glasfiber i størst muligt opfang placeres, hvor spændinger vil forløbe hvis en færdig bjælke udsættes for en mekanisk påvirkning. Hvis en bjælke udformes så der 25 primært i bjælkens hjørner og langs bjælkens yderflader er anbragt forstærkninger i form af stykker af genbrugsglasfiber, der forløber over størsteparten af bjælkens længde, kan der opnås en standardbjælke, der tåler en belastning ensartet i stort set alle retninger. En bjælke af denne type kan anvendes som et bygningskonstruktionsefe-ment, hvor bjælkens egenvægt i forhold til dens bæreevne gør, at denne bjælke kan 30 indsættes og i et vist omfang erstatte bjælker, som vi kender i dag dannet af limtræ.Advantageously, lengths of cut glass fiber corresponding to the length of the mold can be arranged primarily along the longitudinal walls of the mold. This can be achieved by placing the lengths of cut fiberglass in the largest possible range, where tension will extend if a finished beam is exposed to a mechanical impact. If a beam is formed so that reinforcements are placed primarily in the corners of the beam and along the outer surfaces of the beam, in the form of pieces of recycled fiberglass extending over most of the length of the beam, a standard beam can be obtained that can withstand a load uniformly in almost all directions. A beam of this type can be used as a building construction element, where the beam's weight relative to its bearing capacity allows this beam to be inserted and to some extent replace beams that we know today formed of glulam.

Bindemidlet kan tilsættes pulveriseret genbrugsglasfiber inden støbning. Herved kan opnås, at mængden af bindemiddel, der skal anvendes for fremstilling af en bærende 3 DK 176227 B1 bjælke reduceres, hvilket kan ske uden kritisk nedsættelse af styrkeegenskaber, idet bjælkens styrke primært kommer fra de langsgående opskåme stykker af glasfiber og hvor denne styrke stort set bevares uændret så længe de langsgående opskåme glasfiberstykker forbliver fastlåst i deres placering i bjælken.The binder can be added to powdered recycled fiberglass before casting. Hereby it can be achieved that the amount of binder to be used for the manufacture of a supporting beam is reduced, which can be done without a critical reduction in strength properties, the beam's strength mainly coming from the longitudinal sheared pieces of fiberglass and where this strength is large. seen, it remains unchanged as long as the longitudinally sheared fiberglass pieces remain locked in place in the beam.

55

Efter udtagelse af formen kan bjælker udvendigt med fordel blive beklædt med et tyndt lag glasfiber. Herved kan opnås et ensartet udseende af en færdig bjælke, hvor bjælkens udseende yderligere kan forbedres ved overfladebehandling, der kendes fra glasfiberindustrien i forbindelse med fremstilling af enten vindmøllevinger eller skrog 10 til både.After removing the mold, beams on the exterior can advantageously be coated with a thin layer of fiberglass. Hereby, a uniform appearance of a finished beam can be obtained, the appearance of the beam being further enhanced by the surface treatment known from the glass fiber industry in connection with the production of either wind turbine blades or hull 10 for boats.

Efter fyldning med bindemiddel kan formen med fordel lukkes, og der kan skabes et undertryk i formen ved hjælp af en luftpumpe, hvorved overskydende luft frigives fra bindemidlet, hvor formen i forbindelse med trykudligning efterfyldes med bindemid-15 del. Herved kan opnås at eventuelle luftlommer, der er dannet i formen efter opfyldningen med bindemiddel bliver opfyldt med bindemiddel, hvorved den totale eksistens af luftblærer i det færdige produkt væsentligt reduceres, hvorved bæreevnen af den færdige bjælke sikres af ensartede høj styrke.After filling with binder, the mold can be advantageously closed, and an underpressure in the mold can be created by means of an air pump, whereby excess air is released from the binder, the mold being filled with binder in connection with pressure equalization. Hereby, any air pockets formed in the mold after filling with the binder can be achieved with binder, thereby substantially reducing the overall existence of air bladders in the finished product, thereby ensuring the carrying capacity of the finished beam of uniform high strength.

20 Bjælken kan i en mulig udførelsesform krumme, hvor en krum form kan tilføres opskåret genbrugsglasfiber, hvor den opskåme genbrugsglasfiber forspændes med en krumning, der modsvarer formens krumning, hvor forspændt genbrugsglasfiber kan anbringes hvor bjælkens spændinger primært forløber under bjælkens faktiske anvendelse. Herved kan opnås, at der kan fremstilles bjælker, der vil være specielt egnet 25 som overliggere til buer, hvor den krumme glasfiberbjælke kan indlægges, og hvor der ovenpå bjælken eventuelt efterfølgende opmures en mur, herved kan der i en nybygning eller ved renovering i ældre bygninger dannes buer på en enkel og effektiv måde.In a possible embodiment, the beam can be curved, where a curved shape can be applied to cut recycled fiberglass, where the scraped recycled fiberglass is biased with a curvature corresponding to the curvature of the mold, where prestressed recycled fiberglass can be applied where the stresses of the beam are primarily used during the beam. Hereby it can be achieved that beams can be produced which will be particularly suitable as arches for arches where the curved fiberglass beam can be installed and where on the beam a subsequent wall can be subsequently walled, whereby a new building or renovation can be done in older ones. buildings are arched in a simple and effective way.

En anden anvendelse af buer fremstillet af genbrugsglasfiber kan være broer til haveanlæg, hvor en eller flere buer danner det egentligt bærende broelement, hvor vandret-30 liggende bjælker, der ligger ovenover eller på anden vis i kontakt med bueme danner broens flade. Ud fra de færdige buers meget store bæreevne vil bueme kunne anvendes til konstruktion af fodgængerbroer over såvel veje som jernbaner.Another use of recycled fiberglass arches can be bridges for landscaping, where one or more arches form the actual supporting bridge element, with horizontal beams lying above or otherwise in contact with the arches forming the bridge surface. From the very large load capacity of the finished arches, the arches can be used for the construction of pedestrian bridges over both roads and railways.

4 DK 176227 B14 DK 176227 B1

Opfindelsen kan ligeledes omfatte en bjælke, hvor de langsgående fibre kan dannes af genbrugsglasfiber, hvor genbrugsglasfiber med fordel kan være opklippet i længder, der svarer til bjælkens længde, hvor bjælken kan indeholde udfyldningsmateriale i form af genbrugsglasfiber med kortere længde, hvor bjælken ligeledes indeholder 5 mindst et bindemiddel. Herved kan opnås en bjælke med ekstrem stor bæreevne, hvor bjælken primært fremstilles af et genbrugsmateriale, hvor dette genbrugsmateriale kan anskaffes meget billigt, måske endda til en pris hvor man modtager betaling for at bortskaffe genbrugsglasfiberen. Herved bliver det muligt at fremstille bærende bjælker til en lav pris, der er konkurrencedygtig med eksisterende konstruktionselementer på 10 markedet.The invention may also comprise a beam where the longitudinal fibers can be formed from recycled fiberglass, where recycled fiberglass may advantageously be cut into lengths corresponding to the length of the beam, the beam may contain filling material in the form of recycled fiberglass of shorter length, the beam containing at least one binder. In this way, a beam with extremely high load capacity can be obtained, where the beam is primarily made from recycled material, where this recyclable material can be obtained very cheaply, perhaps even at a price where you receive payment for disposal of the recycled fiberglass. This makes it possible to produce low beams at a low price that is competitive with existing structural elements in the 10 market.

De opklippede længder af genbrugsglasfiber kan i den færdige bjælke med fordel placeres primært langs bjælkens sider, hvor bjælkens indre kan indeholde udfyldningsmateriale, hvor udfyldningsmaterialet indeholder opklippet genbrugsglasfiber, hvor hul-15 rum mellem stykker af udfyldningsmateriale kan udfyldes med et bindemiddel, hvor bindemidlet kan indeholde pulveriseret genbrugsglasfiber. Herved kan opnås en billiggørelse af det færdige produkt, idet hulrummene i den færdige bjælke i størst mulig omfang er udfyldt med genbrugsglasfiber og hvor bindemidlet i sig selv indeholder en andel af pulveriseret glasfiber.Advantageously, the cut lengths of recycled fiberglass can be placed in the finished beam primarily along the sides of the beam, where the interior of the beam may contain filler material, the filler material containing clipped recycled fiberglass, and voids between pieces of filler material may be filled with a binder which may contain binder. powdered recycled fiberglass. Hereby, the finished product can be cheapened, since the voids in the finished beam are filled as much as possible with recycled fiberglass and where the binder itself contains a proportion of powdered fiberglass.

2020

Bjælken kan være udformet med et tværprofil bestående af en øvre og en nedre langsgående sektion, hvor bjælken mellem de langsgående sektioner kan indeholde mindst en tværsektion, hvor de langsgående sektioner kan indeholde opklippede længder af genbrugsglasfiber i omtrent de langsgående bjælkers fulde længde, hvor tværsektionen 25 indeholder udfyldningsmateriale. Herved kan opnås, at der af genbrugsglasfibermateriale kan frembringes et H-profil, der har ekstrem stor bæreevne i forhold til mængden af anvendt materiale. Ud fra at materialet er ekstremt billigt er en materialebesparelse næppe et formål i sig selv, men der opnås samtidigt en væsentlig vægtbesparelse af det færdige produkt. Det betyder, at et H-profil dannet ud fra genbrugsglasfiber vil have 30 en større bæreevne i forhold til egenvægt end den traditionelle massive bjælke.The beam may be formed with a transverse profile consisting of an upper and a lower longitudinal section, wherein the beam between the longitudinal sections may contain at least one cross section, wherein the longitudinal sections may contain cut lengths of recycled fiberglass about the full length of the longitudinal beams, the cross section 25 contains filling material. Hereby it can be achieved that from recycled glass fiber material an H-profile can be obtained which has extremely high bearing capacity relative to the amount of material used. Given that the material is extremely cheap, a material saving is hardly an end in itself, but at the same time a significant weight saving of the finished product is achieved. This means that an H profile formed from recycled fiberglass will have a greater load-bearing capacity compared to the traditional solid beam.

Bjælken kan indeholde mindst et rør, der omgives af opklippet glasfiber og bindemiddel, hvor røret anvendes til kabelgennemføring. Herved kan opnås, at der på en enkel 5 DK 176227 B1 og ukritisk måde kan dannes kabelgennemføringer gennem de færdige bjælker. Hvis en bjælke skal fremstilles til en hel specifik opgave kan der ved produktion af bjælken indlægges forbundne rør, således at disse rør er tilgængelige fra overfladen og overalt hvor man ønsker en elektrisk tilslutning. Hvis indlæggelse af rørene sker forholdsvis 5 med hensyntagen til bjælkernes bæreevne kan der indlægges rør i en bjælke, uden at dette påvirker bjælkens totale bæreevne i nævneværdig grad.The beam may contain at least one tube surrounded by clipped fiberglass and binder where the tube is used for cable entry. Hereby it can be achieved that in a simple and uncritical manner, cable penetrations can be formed through the finished beams. If a beam is to be manufactured for a very specific task, connected pipes can be inserted during production of the beam, so that these pipes are accessible from the surface and wherever an electrical connection is desired. If the pipes are laid in relatively 5 with regard to the load-bearing capacity of the beams, pipes can be installed in a beam without significantly affecting the overall load-bearing capacity of the beam.

Anvendelsesmulighederne for glasfiberbjælker, der er fremstillet ud fra genbrugsglasfiber er utrolig store. Ud fra at råvarerne er tilstede i enorme mængder som affald fra 10 produktion af vindmøllevinger eller i forbindelse med skrotning af vindmøllevinger, skrotning af bådskrog eller skrotning af svævefly, så vil råvaremangel aldrig blive noget problem, idet mængden af glasfiber der deponeres er enorm stort. Primært i kritiske miljøer vil man med fordel kunne anvende glasfiberbjælker i f.eks. bygningskonstruktion. Her tænkes primært som bærende bjælker i forbindelse med stalde, hvor en 15 ammoniakholdig atmosfære ellers angriber traditionelle materialer. Ligeledes som bærende bjælke i bygninger, der indeholder kemiske produktionsanlæg, hvor der måske kunne frigives ætsende kemikalier, vil man med fordel kunne anvende glasfiber-konstruktioner. En anden mulig anvendelse vil være konstruktion af bæreelementer til gyllebeholdere, hvor selve gyllebeholderen måske overdækkes ved hjælp af en presen-20 ning eller et telt, der hviler på et antal stænger, der er fremstillet af genbrugsglasfiber, hvorved presenning eller telt over en gyllebeholder kan løftes fri, således at regnvand løber ud på gyllebeholderens yderside. Et låg fremstillet af genbrugsglasfiber vil have en meget lav egenvægt i forhold til eksisterende låg, hvorved hele låget inklusive presenning eller telt med en forholdsvis lille kran kan løftes ned og placeres ved siden af 25 gyllebeholderen, når der er behov for adgang til selve beholderen.The applications for fiberglass beams made from recycled fiberglass are extremely large. Since the raw materials are present in huge quantities such as waste from 10 production of wind turbine blades or in connection with scrap of wind turbine blades, scrap of boat hull or scrap of gliders, raw material shortages will never be a problem, as the amount of fiberglass deposited is huge. Primarily in critical environments, it is advantageous to use fiberglass beams in e.g. building construction. This is primarily thought of as beams in connection with stables, where a 15 ammonia-containing atmosphere otherwise attacks traditional materials. Likewise, as a beam in buildings containing chemical production plants, where corrosive chemicals could be released, glass fiber structures can be used advantageously. Another possible application would be the construction of slurry container carriers, wherein the slurry container itself may be covered by a tarpaulin or a tent resting on a plurality of recycled fiberglass rods, whereby tarpaulin or tents over a slurry can is lifted free so that rainwater flows out on the outside of the slurry tank. A recycled fiberglass lid will have a very low intrinsic weight over existing lids, whereby the entire lid, including tarpaulin or tent with a relatively small crane, can be lifted down and placed next to the 25 slurry container when access to the container itself is needed.

I det følgende forklares opfindelsen ud fra figurer, hvor fig. 1 viser et snit gennem en mulig udførelsesform for opfindelsen, og hvor 30 fig. 2 viser et snit gennem en alternativ udførelsesform for opfindelsen, hvor fig. 3 viser en alternativ uførelsesform for opfindelsen, hvor 6 DK 176227 B1 fig. 4 viser et snit gennem udførelsesformen på fig.3 hvor fig. 5 viser et andet snit gennem udførelsesformen fra fig. 3-4, hvor 5 fig. 5 viser yderligere en mulig alternativ uførelsesform for opfindelsen, hvor fig. 6 viser et snit gennem udførelsesformen på fig.3, hvor fig.5 viser et andet snit gennem udførelsesformen fra fig. 3-4.In the following, the invention is explained from Figs. 1 shows a section through a possible embodiment of the invention, wherein FIG. 2 shows a section through an alternative embodiment of the invention, in which FIG. 3 shows an alternative embodiment of the invention, in which FIG. 4 shows a section through the embodiment of FIG. 3, where FIG. 5 shows another section through the embodiment of FIG. 3-4, wherein FIG. 5 further illustrates a possible alternative embodiment of the invention, in which FIG. 6 shows a section through the embodiment of FIG. 3, where FIG. 5 shows another section through the embodiment of FIG. 3-4.

1010

Fig. 1 viser et snit gennem en bjælke 2, der er fremstillet ifølge opfindelsen, hvor bjælken 2 indeholder lange stykker af opskåret genbrugsglasfiber 4, hvor de langsgående stykker af genbrugsglasfiber 4 primært ligger langs bjælkens 2 ydervæge. Bjælken 2 indeholder ligeledes stykker afkort opskåret genbrugsglasfiber 6, hvor stykkerne 15 af genbrugsglasfiber er omgivet af et bindemiddel 8. Bjælken 2 indeholder ligeledes et rør 10 til kabel gennemføring.FIG. 1 shows a section through a beam 2 made in accordance with the invention, wherein the beam 2 contains long pieces of cut recycled glass fiber 4, the longitudinal pieces of recycled glass fiber 4 being primarily along the outer walls of the beam 2. The beam 2 also contains pieces cut short of recycled fiberglass 6, the pieces 15 of recycled fiberglass being surrounded by a binder 8. The beam 2 also contains a pipe 10 for cable entry.

På fig. 2 vises et snit gennem en alternativ udførelses form for en bjælke 102. hvor bjælken 102 er udformet som et H profil. Bjælken 102 indeholder langs gående styk-20 ker af genbrugsglasfiber 104 og korte stykker af genbrugsglasfiber 106. Stykkerne af genbrugsglasfiber 104 og 106 er fastlåst i et bindemiddel 108.In FIG. 2 shows a section through an alternative embodiment of a beam 102, where the beam 102 is designed as an H profile. The beam 102 contains longitudinal pieces of recycled fiberglass 104 and short pieces of recycled fiberglass 106. The pieces of recycled fiberglass 104 and 106 are locked in a binder 108.

På fig. 3 er vist et sidebillede af en bjælke 202, der indeholder stykker af opskåret langsgående genbrugs glasfiber 204, hvor de langsgående stykker 204 er omgivet af 25 glasvæv med bindemiddel 208.In FIG. 3 is a side view of a beam 202 containing pieces of cut longitudinal recycled glass fiber 204, the longitudinal pieces 204 being surrounded by 25 glass webs with binder 208.

Fig. 4 viser et snit B-B gennem udførelsesformen vist på fig. 3. Her ses de langsgående glasfiber stykker 204 og det omgivende glasvæv med bindemiddel 208.FIG. 4 shows a section B-B through the embodiment shown in FIG. 3. Here are seen the longitudinal fiberglass pieces 204 and the surrounding glass fabric with binder 208.

30 Fig. 5 viser et snit A-A gennem bjælken 202, der er vist på fig. 3 og 4. Her ses udstrækningen af de langsgående stykker ag opklippet genbrugsglasfiber 204, som er omgivet af glasvæv med bindemiddel 208. Genbrugs glasfiber stykkerne har en struktur retning 212.FIG. 5 shows a section A-A through the beam 202 shown in FIG. 3 and 4. Here, the extent of the longitudinal pieces of cut recycled glass fiber 204, which is surrounded by glass tissue with binder 208., is seen here. The recycled glass fiber pieces have a structure direction 212.

7 DK 176227 B1 På fig. 6 er vist et sidebillede af en bjælke udformet som et H profil 302, der indeholder stykker af opskåret langsgående genbrugs glasfiber 304, hvor de langsgående stykker 304 er omgivet af glasvæv med bindemiddel 308.7 DK 176227 B1 In fig. 6 is a side view of a beam formed as an H profile 302 containing pieces of cut longitudinal recycled glass fiber 304, the longitudinal pieces 304 being surrounded by glass web with binder 308.

55

Fig. 7 viser et snit B-B gennem udførelsesformen vist på fig. 6. Her ses de langsgående glasfiber stykker 304 og det omgivende glasvæv med bindemiddel 308.FIG. 7 shows a section B-B through the embodiment shown in FIG. 6. Here are seen the longitudinal fiberglass pieces 304 and the surrounding glass fabric with binder 308.

Fig. 8 viser et snit A-A gennem bjælken 302, der er vist på fig. 3 og 4. Her ses ud- 10 strækningen af de langsgående stykker ag opklippet genbrugsglasfiber 304, som er omgivet af glasvæv med bindemiddel 308. Genbrugs glasfiber stykkerne har en struktur retning 312.FIG. 8 shows a section A-A through the beam 302 shown in FIG. 3 and 4. Here, the extent of the longitudinal pieces of cut recycled fiberglass 304, which is surrounded by glass tissue with binder 308, is seen here. The recycled fiberglass pieces have a structure direction 312.

Opskæring af større glasfiber stykker kan være besværlig. Spåntagende værktøjer sli-15 des ved skæring i glas og der udvikles en høj temperatur på de skærende flader. Den høje temperatur kan medføre at glasfiberens bindemiddel smelter og afsættes på klinger eller tænder.Cutting larger fiberglass pieces can be cumbersome. Cutting tools are abrasive when cut into glass and a high temperature is developed on the cutting surfaces. The high temperature can cause the glass fiber binder to melt and deposit on blades or teeth.

Gn mulig løsning på problemet kan være først at bore en række huller langs en ønsket 20 brudzone. Derefter med en vinkelsliber udstyret med en egnet klinge at skære et snit mellem hullerne. Passage af hullerne betyder at standtiden på klingen øges væsentligt.One possible solution to the problem may be to first drill a number of holes along a desired breaking zone. Then with an angle grinder equipped with a suitable blade to cut a cut between the holes. Passage of the holes means that the standby time of the blade is significantly increased.

På grund af rækken af huller opnår klingen kortvarig en nedkøling ved passage af hullerne.Due to the row of holes, the blade briefly achieves a cooling when passing through the holes.

Claims

A method for producing supporting beams (2, 102, 202, 302), wherein beams (2, 102, 202, 302) consist of a longitudinal fiber material (4, 104, 204, 303. and at least one filling material (6,106). , wherein the longitudinal fiber material (4, 104, 204, 304) mainly extends in the longitudinal direction of the beams (2, 102, 202, 302), characterized in that the longitudinal fiber material (4, 104, 204, 304) contains recycled fiberglass, where recycled fiberglass is cut to the greatest possible length relative to a beam (2, 102, 202, 302), where recycled fiberglass is cut to a width less than the width of the beam (2, 102, 202, 302) 10 recycled fiberglass is placed in a mold in which the mold is also filled with backfill material (4, 104, 204, 304) short cut recycled fiberglass, the mold cavity being filled with a binder (8, 108,208,308) which subsequently cures.

Method according to claim 1, characterized in that lengths of cut glass fiber (4, 104, 204, 304) corresponding to the length of the mold are arranged primarily along the longitudinal walls of the mold.

Method according to claim 1 or 2, characterized in that the binder (8, 108, 20 208, 308) is added to powdered recycled fiberglass before casting.

Method according to one of Claims 1 to 3, characterized in that after removal of the mold beams (2, 102, 202, 302) are externally coated with a thin layer of fiberglass. 25

Process according to one of claims 1-4, characterized in that after filling with binder (8, 108, 208, 308) the mold is closed and a vacuum is created in the mold by means of a suction pump, whereby excess air is released from the binder. (8, 108, 208, 308), wherein the form of pressure equalization is filled with 30 binder (8, 108,208,308).

Method according to one of Claims 1 to 5, characterized in that the beam (2, 102) curves, where a curved shape is applied to cut recycled glass fiber, where the cut recycled glass fiber is biased with a curvature corresponding to the curvature of the mold. where prestressed recycled fiberglass is disposed primarily where the stresses of the beam mainly extend during the actual use of the beam.

7. A beam (2, 102, 202, 302) having load-bearing properties, wherein the beam (2, 102, 202, 302.) contains longitudinal fibers (4, 104, 204, 304), wherein the beam (2, 102, 202, 302) contains a filling material (4, 104, 204, 304) in which the longitudinal fibers are fixed by a binder (8, 108, 208, 308), characterized in that the longitudinal fibers (4, 104, 204, 304) are formed of recycled fiberglass, where recycled fiberglass is cut into lengths corresponding to the length of the beam (2, 102, 202, 302), wherein the beam (2,102,202, 302) contains filling material (6,106) in the form of recycled fiberglass with shorter length (2,102,202,302) contains at least one binder (8, 108,208,308).

Beam according to claim 7, characterized in that the cut lengths of recycled fiberglass (4, 104, 204, 304) are located primarily along the sides of the beam (2, 102, 202, 302), the interior of the beam containing filling material (6, 106), wherein the filler material (6, 106) contains cut recycled glass fiber, where voids between pieces of filler material are filled with a binder (8, 108, 208, 20 308), wherein the binder contains powdered recycled glass fiber.

8 DK 176227 B1

Beam according to claim 7 or 8, characterized in that the beam (2, 102, 202, 302) has a cross profile consisting of an upper and a lower longitudinal section, wherein the beam between the longitudinal sections contains at least one cross section where the longitudinal sections are arranged. Twenty-five sections contain cut lengths of recycled fiberglass (4, 104, 204, 304) in approximately the full length of the longitudinal beams (2, 102, 202, 302), the cross section containing filler material (6,106).

Beam according to one of claims 7-9, characterized in that the beam (2, 102, 202, 302) 30 contains at least one tube (10) surrounded by cut glass fiber (4, 104, 6, 106, 204, 304). ) and binder (8, 108, 208, 308) wherein tubes (10) are used for cable entry.