• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    There is disclosed a fiber reinforced semi-finished product (2) comprising an outer flexible casing tube (4). The semi-finished product (2) is flexible and malleable and comprises a resin impregnated fiber bundle (16). The resin is uncured and allows the semi-finished product (2) to be maintained in an uncured state for at least 24 hours at room temperature (23 ° C).
    公开号:DK201500202A1
    申请号:DKP201500202
    申请日:2015-03-31
    公开日:2016-04-18
    发明作者:Henrik Thorning；Lars Tilsted Lilleheden
    申请人:Fiberline Composites As；
    IPC主号:
    专利说明:

    Semi-finished and structural element made from the same
    Description
    FIELD OF THE INVENTION
    The present invention relates to a semi-finished product as well as a structural element formed from said semi-finished product. The structural element may be adapted for use, i.a. in connection with reinforcement of concrete structures and in connection with general reinforcement of, among other things. beams and columns.
    BACKGROUND OF THE INVENTION In connection with the reinforcement of masonry and concrete structures, reinforcing elements made on the basis of e.g. reinforcing bars shaped as rods or as bends.
    US 3,650,864 relates to a fiber-reinforced, semi-finished product consisting of resin-impregnated fibers, which is enclosed by a non-porous and flexible plastic film (foil). The plastic film is welded together and shrunk to provide a substantially airtight environment, thereby preventing curing of the resin. The resin can subsequently be cured in whole or in part. However, there is a risk of air being encapsulated with the resin and fibers, which degrades the product. Furthermore, the plastic film does not protect the product from deformation, which is why the product must be coiled on, for example, coils to store.
    In many application situations, the reinforcing elements used (including rods and bends) or alternatively designed reinforcing systems (e.g. reinforcing mesh) are either required to be corrosion resistant or protected against corrosion, have a low thermal and / or electrical conductivity, and have low weight. The commonly used reinforcing bars do not meet all these requirements, not even the type made of stainless steel.
    In order to establish the necessary adhesion between the reinforcing elements and the concrete / mortar, it is necessary to provide a suitable surface structuring which partly allows the concrete / mortar to come into contact with all parts of the reinforcing elements surface and partly provides a sufficient degree of geometric locking of the reinforcing elements. and the concrete / mortar in between.
    Fiber-reinforced composite reinforcement elements have been developed that are corrosion-resistant and designed with an optimized surface structure. Such reinforcing elements are typically shaped as cylindrical rods which are subsequently surface-structured via a post-machining process in which an external thread is milled with an optimized geometry from the concrete / mortar or alternatively applied to a surface having a similar function to provide adhesion between the reinforcing elements and the concrete / mortar.
    In many cases, reinforcing elements that include bends are needed. The bending of composite reinforcing elements is established during the manufacturing process before the curing process is completed. It is therefore not possible to subsequently change the geometry of the bends. It will be desirable to be able to provide a more flexible solution that allows for subsequent shaping.
    If the construction site to which composite reinforcement elements with bends are to be used is located far away from the production destination, the composite reinforcement elements will need to be ordered well in advance to arrive on time at the construction site. Therefore, alternative reinforcing elements are often chosen e.g. made of steel, even in cases where reinforcing elements made of fiber-reinforced composite are the optimum solution, as traditional composite reinforcing elements are not malleable, e.g. rebar.
    Therefore, an alternative to the traditional composite reinforcing elements is needed.
    Thus, it is desirable to provide a composite reinforcing element which can be shaped by simple fixtures upon completion of the fabrication phase.
    It is further desirable to provide a composite reinforcing element which can be handled and used in a simple and user-friendly manner and which provides design freedom at the level of that known from reinforcing iron.
    The object of the invention
    The object of the present invention is to provide an alternative to the traditional compositing elements.
    It is also the object of the present invention to provide a way in which a composite reinforcing element can be provided which provides design freedom at the level of that known from reinforcing iron.
    It is further the object of the present invention to provide a semi-finished product which can be handled and used in a simple and user-friendly manner and which can be used to manufacture a structural element.
    The object of the present invention is achieved with a composite reinforcing element as defined in claim 1. Preferred embodiments are defined in the subclaims, explained in the following description and illustrated in the accompanying figures.
    The product of the invention is a fiber-reinforced semi-finished product comprising an outer flexible casing tube, the semi-finished product comprising a resin impregnated fiber bundle, wherein the resin is uncured and allows the semi-finished product to be maintained in an uncured state for at least 24 hours at room temperature (23 ° C).
    Thus, it is possible to provide a semi-finished product that can be formed as required by simple fixtures for at least 24 hours after the end of the manufacturing phase.
    Thus, it will be possible to use the semi-product of the invention e.g. with the end user at a construction site (or near it). The semi-product of the invention can be cured immediately prior to commissioning, so that the final geometry can be adjusted to any changes that occur late in the process.
    Furthermore, with the invention, it is possible to provide a semi-finished product which can be handled and used in a simple and user-friendly manner and which can be used to manufacture a structural element.
    In a preferred embodiment of the invention, the semi-finished product comprises a resin (e.g., pre-catalyzed) which allows the semi-finished product to be maintained in an uncured state for longer periods than 24 hours at room temperature (23 ° C). Depending on the storage temperature and the (possibly pre-catalyzed) resin used, pot life can be changed. The lower the storage temperature, the longer pot life can be achieved.
    It will be possible to use the semi-manufacture according to the invention to produce a reinforcing element as a reinforcing element (to increase the mechanical strength) or as a machine or building component (eg a spring).
    The product of the invention is a fiber-reinforced semi-finished product containing resin impregnated fibers. These fibers can be glass fibers, carbon fibers, aramid fibers, basalt fibers, metal fibers or natural fibers. The fibers may advantageously be continuous fibers.
    The semi-finished product may contain tissue or one or more mats.
    The semi-finished product includes an outer flexible casing tube. The casing may have different designs depending on the purpose for which the semi-finished product is to be used. For use in connection with reinforcing bars, the casing tube may advantageously be cylindrical with a helical thread groove provided in the cylinder surface.
    The cap tube may have any suitable geometry. The cross section of the cap tube may e.g. be circular, oval, triangular, square, pentagonal, hexagonal or octagonal. The jacket tube may comprise several parts that overlap completely or partially. If the casing tube comprises several parts, the casing tube may advantageously comprise structures for attaching the corresponding part, e.g. corresponding mechanical engagement elements. The cap tube may comprise one or more axial (longitudinal) joints, e.g. may be assembled by means of a mechanical assembly or by welding. For certain purposes, including the use of the semi-finished product for reinforcing a beam, the cutting pipe can e.g. have a rectangular cross section.
    The jacket can advantageously have a uniform cross-section.
    The cap tube is shaping, contains the wet resin and forms a consolidating element in the forming phase. The jacket tube thus helps to design the semi-finished product, so that the forming phase can be carried out only by means of simple fixtures in combination with thermal curing, UV light-based curing, microwave curing, induction curing or combinations thereof.
    When the semi-finished product is cured, the casing protects the resin impregnated fibers during storage, transport and use (eg in connection with concrete casting). Furthermore, the cap tube is capable of providing an effective anchoring of the cured semi-product, provided that a suitable surface structuring or coating is provided in the cap tube.
    The casing can give the semi-finished product and its structural elements the desired aesthetic expression and can e.g. stained or translucent or transparent. The jacket can be UV-protective.
    The jacket tube may further comprise geometric structures which can be used as injection channels to facilitate resin impregnation of the fiber bond in the jacket tube.
    The cap can be made of thermoplastic such as polyethylene, polypropylene, polyvinyl chloride, polystyrene or polycarbonate, in elastomers such as rubber and silicone or in metal. The material used may advantageously be heat-resistant (to be adapted for subsequent thermal curing of the resin) and may advantageously be provided in a geometric configuration which makes the casing flexible and malleable.
    The semi-finished product is flexible and includes an uncured resin. The semi-finished product is designed to be cured in simple fixtures using heat, UV light, microwaves, induction or combinations thereof. Simple fixtures can be geometric shapes in which the semi-finished product can be designed and retained in the desired shape. Fixtures can be used to form one-, two- or three-dimensional semi-finished products.
    The semi-product of the invention comprises an uncured resin which is so flexible that it is possible to bend the casing until the desired geometry is obtained. When the desired geometry is obtained, it is possible to cure the semi-finished product e.g. via heating (for example, in a curing oven), via radiation of light (a UV light source), microwaves, induction or via combinations thereof.
    The semi-finished product can be used for the manufacture of structural elements used for reinforcing concrete, for masonry (for example designed as overlays, masonry or other structural elements), for earthquake protection of buildings and load-bearing structures. The semi-finished product can alternatively be used for the production of general structural elements in e.g. balconies.
    It may be an advantage that the semi-finished product comprises a resin which is adapted to be thermally cured at a predefined temperature, preferably above 80 ° C, such as 80-150 ° C. Thus, it will be possible to produce blanks via thermal curing of the semi-finished product according to the invention. The resin may be pre-catalyzed.
    It is advantageous to be able to keep the semi-finished product in storage for extended periods of time (days, weeks, months) until it needs to be shaped, cured and used. Thus, it is possible to provide remote destinations with semi-finished products that are used for further processing (use where the semi-finished products are designed and hardened). In this way, the same design freedom obtained from reinforcing iron is obtained. At the same time, a number of property benefits are obtained by using fiber-reinforced composite (low thermal and electrical conductivity and low weight).
    It is an advantage that the semi-finished product is designed to be designed solely by means of simple fixtures and heat or UV light, allowing a simple and simple molding process that can be done far away from the production destination.
    The resin may be any suitable resin which can be retained in impregnated form in an uncured state for at least 24 hours at room temperature. The resin may advantageously be alkali resistant. The resin may be any suitable resin. The resin can e.g. include epoxy, phenolic system, vinyl ester, polyurethane or other suitable types which allow injection by e.g. room temperature or higher temperatures. The resin may be added to a hardener which is first activated at 80-150 ° C.
    It may be advantageous for the casing tube to comprise an outer thread extending along at least a portion of the casing tube ends.
    Hereby it is possible to plug the casing tube by screwing a plug at one end of the semi-finished product or plugs at each end of the semi-finished product. The thread can also ensure effective adhesion in connection with casting in concrete or mortar.
    It is possible to provide a secure and simple sealing of the composite reinforcing element according to the invention by using mechanically fastened (screwed on) plugging elements.
    It may be an advantage that the casing tube is tubular (cylindrical) and comprises an outer thread extending along the entire length of the composite casing. The external thread ensures optimum adhesion when using the semi-finished product as reinforcing element in concrete or mortar.
    In one embodiment, a viscosity regulating additive is used to control the viscosity of the resin. Thus, it is possible to increase the viscosity of the resin in order to minimize the risk of leakage of resin. It may be advantageous for one or more additives to be added to the resin, including a thickener. It may be advantageous to add viscosity regulating additive.
    It may be advantageous for the semi-finished product to comprise at least one plug attached to the end cap of the casing.
    The use of one or more plugs ensures a simple and valid closure of the casing so that the resin does not leave the casing during storage or transport of the semi-finished product.
    It may be advantageous for the casing to be translucent or transparent. This makes it possible to visually inspect the resin and fiber content, including quality assurance of the casing tube content. In addition, it is possible to provide a light-induced cure of the resin as light can penetrate the translucent or transparent jacket tube.
    The term "translucent or transparent" is meant to be fully or partially light permeable. It can be an advantage that the jacket tube is completely permeable to UV light in particular, which can be used for UV curing of the semi-finished product.
    It may be advantageous for the resin to be light curing. By using a light curing resin it is possible to effect a cure using light, preferably ultraviolet light.
    It may be an advantage that the casing has a fiber content of more than 30% Vol, preferably more than 50% Vol, and that the air content is below 5% Vol., Preferably below 2% Vol.
    This ensures a robust and strong semi-finished product.
    It is possible to reduce the air content to below 5% Vol., Preferably below 2% Vol., By injecting the resin under pressure.
    It may be advantageous to use continuous fibers, including glass fibers, carbon fibers, aramid fibers, basalt fibers, metal fibers or natural fibers.
    It may be an advantage that the casing is equipped with one or more injection channels.
    Use of one or more injection channels ensures that the fibers in the jacket tube can be impregnated.
    It may be advantageous for one or more injection channels to be provided along the inside of the jacket tube.
    The injection channels can advantageously be integrated into the jacket tube.
    However, it is possible to place a separate injection channel in the jacket tube (for example, extending along the fiber bound in the jacket tube).
    The semi-finished product of the invention makes it possible to produce uncured reinforcing bars or other structural elements which can subsequently be formed and cured when needed. The semi-finished product according to the invention allows the uncured items to be exported to remote countries where the local supplier can stock the items (eg reinforcing bars or other structural elements) and where user-specific items with bends can subsequently be provided via thermal curing, UV light -based curing, induction curing, microwave curing or combinations thereof.
    Figure Description
    The invention will be explained in the following with reference to the accompanying drawings, in which
    FIG. Figure 1A is a schematic illustration of a portion of a cut semi-finished product according to the invention,
    FIG. 1B is a close-up view of a portion of FIG. 1A shows the semi-finished product, FIG. Figure 2A is a schematic illustration of a semi-finished product according to the invention in a first uncured state;
    FIG. 2B shows a schematic illustration of the one shown in FIG. 1A in a bent and cured state,
    FIG. 2C shows a close-up view of a portion of the device shown in FIG. 1A shows the semi-finished product, FIG. 3 shows various embodiments of the invention,
    FIG. 4 shows a variety of embodiments with integrated injection channels according to the invention,
    FIG. 5 shows a beam to be reinforced via a mechanical support and
    FIG. 6 shows various semi-finished products according to the invention.
    Detailed description
    Initially, it should be noted that the attached drawings illustrate non-limiting embodiments only. A variety of other embodiments will be possible within the scope of the present invention. In the following, similar or identical elements in the various embodiments will be denoted by the same reference numeral.
    FIG. Figure 1A is a schematic illustration of a portion of a cut semi-finished product 2 according to the invention. The semi-finished product 2 is formed as a composite reinforcing bar comprising a casing tube 4 in which an external thread 12 is provided.
    Continuous fibers 16, such as e.g. may be glass fibers, carbon fibers, armid fibers, basalt fibers, metal fibers or natural fibers. The fibers 16 are impregnated with a pre-catalyzed resin which is heat-curing and / or UV-curing.
    The semi-finished product 2 is flexible and contains uncured resin. The resin may advantageously be injected under pressure so that the resin does not contain air bubbles. Injection of resin under pressure will displace air from the casing 4. This method of preparation can thus be used to provide a semi-finished product 2 with a low air content in the resin. This makes it possible to produce a strength-optimized item from the semi-finished product 2.
    FIG. 1B is a close-up view of a portion of FIG. 1A 4 shown.
    It will be seen that the thread 12 comprises a thread profile consisting of a continuous progressive thread groove (groove as a spiral) 24 provided in a continuous cylinder surface 20. It is seen that the width of the cylinder surface is significantly greater than the width of the thread groove. It is further seen that the cylinder surface 20 extends parallel to the longitudinal axis X of the casing tube.
    The angle between two adjacent flanks 22, 22 'as well as the outer diameter and the inner diameter of the thread can be varied if required.
    FIG. Figure 2A shows a schematic illustration of a semi-finished product 2 according to the invention. The semi-finished product 2 comprises a sheath tube 4 containing fibers impregnated with a (possibly pre-catalyzed) uncured resin. The viscosity of the resin is so low that the semi-finished product 2 can be bent and shaped according to the user's needs.
    The semi-finished product 2 is formed as a reinforcing bar 2 with a continuous thread (profile) 12. The reinforcing bar 2 thus has a uniform (shaped like a spiral) outer geometry extending along its entire length and is arranged to be shaped by a molding process.
    At the first end 14 of the casing tube there is a first plug 6 which is mechanically fastened. The plug 6 comprises an internal thread which is engaged with the thread 12 provided on the outside of the casing tube 4. The plug 6 is then threaded onto and thus secured to the casing tube 4. The internal thread of the plug may advantageously be slightly tapered, so that the inner diameter narrows, thus gradually tightening more and more against the outer threads of the casing tube 12.
    FIG. 2C shows a close-up view of a portion of the device shown in FIG. 1A shows semi-finished 2. It is seen that the thread 12 is a uniform helical profile running along the semi-finished 2.
    FIG. 2B shows a schematic illustration of the one shown in FIG. 1A shows semi-finished product 2 in a bent and hardened state. Note that the surface profiling (thread) is not indicated in Figs. B. The flab fabric 2 has a U-shaped sheath 4 comprising a first straight piece 10 connected to a second straight piece 10 'via a first 90 degree bend 8.
    The jacket tube 4 further comprises a third straight piece 10 'connected to the second straight piece 10' via a second 90 degree bend 8 '. A first plug 6 is provided at the first end 14 of the casing tube and at the second end 14 'of the casing tube a second plug 6' is provided. The plugs are screwed into the thread 12 and thus plug the casing tube 4.
    When the sheath 4 is shaped as shown in FIG. 2 C, it is possible to cure the semi-finished material 2 thermally or with the use of light (eg a UV light source), depending on the type of resin fibers in the casing 4 being impregnated with.
    It will be possible to provide the semi-finished product 2 with many other forms (see Fig. 6).
    FIG. 3 shows examples of embodiments of the invention. FIG. 3 A, FIG. 3B, FIG. 3 C, FIG. 3D and FIG. 3E shows examples of the invention embodied as machine elements in the form of springs 18.
    FIG. 3F shows a semi-finished product 2 according to the invention comprising a casing tube 4. The finished product 2 comprises four straight pieces 10, 10 ', 10 ", 10"' connected by four corrugated zones, in which bends 8, 8 ', 8 ", 8 are provided. ' ". The one shown in FIG. 3F embodies the possibility of establishing the bends 8, 8 ', 8 ", 8'" in a number of predetermined corrugated zones. The straight pieces 10, 10 '10 "of the casing tube 4 are provided without an external surface structure.
    In FIG. 3G shows another semi-finished product 2 according to the invention comprising a casing tube 4. The finished product 2 comprises three straight pieces 10, 10 ', 10 "connected by three corrugated zones, in which bends 8, 8', 8" are provided.
    In FIG. 3 F and FIG. 3G embodiments may be formed in two or three dimensions depending on the actual need. For example, made brick binders as shown in FIG. 3 Fl.
    FIG. 3H illustrates a masonry structure constructed of brick 26. Insulation 28, 30 is provided between the two walls 32, 34. Of the masonry structure, a semi-finished product 2 according to the invention is further arranged as a masonry binder 2 on the upper layer of bricks 26. replace traditional stainless steel wall binders.
    A wall binder 2 according to the invention has the advantage that the specific thermal conductivity [W / (m'K) j is approx. 0.25-1.0 [W / (m'K) j, while stainless steel wall binders have a specific heat conductivity [W / (nrK)] of approx. 14-16 [W / (m'K) j. Thus, bridging which occurs in connection with the use of masonry binders can be significantly reduced. At the same time, a brick binder 2 with an increased mechanical strength (including tensile strength) can be provided, if e.g. fiberglass or carbon fibers in the mortar binder 2.
    It should be emphasized that in Figs. 3, through a curing process 2, is formed into composite structural elements. If a curing of semi-finished products 2 with geometries is carried out as shown in Figs. 3, composite structural elements of the same geometry are obtained.
    FIG. 4 illustrates various casing pipes 4 according to the invention. The sheath tubes 4 shown comprise one or more injection channels 36, 38 provided to facilitate the delivery of resin in connection with the impregnation of the fibers in the sheath tubing 4.
    FIG. 4A shows a cross section of a cylindrical casing tube 4 according to the invention. The cap tube 4 is provided with a central (concentric) disposed tubular injection channel 36 in which a series of apertures 40 for distributing resin for impregnating fibers (not shown) in the cap tube 4. The tubular injection channel 36 may advantageously extend along the entire length of the sheath tube to facilitate impregnation of fibers along the entire length of the sheath tube. The tubular injection channel 36 may be located other than along the longitudinal axis of the casing tube.
    FIG. 4B illustrates another view of the one shown in FIG. 4A is shown from the end.
    FIG. 4C illustrates a cross section of another cylindrical casing tube 4 according to the invention. The cap tube 4 is provided with multiple injection channels 38 in which a longitudinal aperture 40 is provided for distributing resin for impregnating fibers in the cap tube 4. The injection channels 38 extend along the inner wall of the cap tube and may advantageously extend along the entire length of the cap tube to facilitate impregnating fibers along the entire length of the sheath tube (as shown in Fig. 4 D). The openings 40 face the central portion of the casing tube.
    FIG. 4D illustrates a perspective view of a further embodiment of a jacket tube 4 according to the invention. The cap tube 4 is cylindrical and is provided with eight injection channels 38 distributed along the wall of the cap tube. A plurality of apertures are provided in the injection channels 38 through which the resin may flow in the radial direction. Thus, the resin can be passed axially through the injection channels 38 and distributed to impregnate the fibers (not shown) in the casing 4 via passage through the openings 40.
    Advantageously, the injection channel 38 extending along the inner wall of the sheath tube may extend along the entire length of the sheath tube to facilitate impregnation of the fibers along the entire length of the sheath tube. The openings 40 can advantageously face the center axis of the casing tube.
    FIG. 4E illustrates a cross section of yet another casing tube 4 according to the invention. The cap tube 4 is provided with an injection channel 38 formed as an internal thread 38 extending along the inner wall of the cap tube. The cap 4 includes a smooth outer surface.
    FIG. 4F illustrates a cross section of a further casing tube 4 according to the invention. The cap tube 4 is provided with an injection channel 38 similar to that of FIG. 4 E. A thread having a geometry corresponding to the thread provided in the inner wall of the casing tube 38 is provided on the outside of the casing tube.
    FIG. 5 shows a beam 42 to be reinforced via a mechanical support. The views on the left are cross-sectional views, while the views on the right are similar views of the beam viewed from the side.
    FIG. Fig. 5A shows a situation where a groove 44 is established in the lower part of the beam 42. A semi-finished product 2 according to the invention is placed under the beam 42. The semi-finished product 2 is provided with a first plug 6 at one end and a second plug. 6 'at the other end.
    FIG. Figure 5B shows a situation where the semi-finished product 2 is formed after the groove 44 so that the semi-finished product 2 has a surface corresponding to the surface 48 of the groove 44.
    In FIG. At 5 ° C, the semi-finished product 2 is placed in the groove 44 and a curing is carried out by means of a UV light source 46 which emits UV light 50. The semi-finished product 2 contains a light-curing resin.
    FIG. 6 shows various semi-finished products 2 according to the invention and examples of configurations.
    FIG. 6 shows various semi-finished products 2, each comprising a number of straight pieces 10, 10 'and a number of bends 8, 8'. FIG. 6 shows examples of which bends 8, 8 'can be made from semi-finished products 2 according to the invention.
    It is possible to cure the semi-finished products 2 via UV light, via thermal curing, using microwaves, using induction or combinations of heat and / or UV light and / or microwaves or / or induction.
    Reference number 2 Semi-finished 4 Cutting cap 6,6 'Plug 8, 8', 8 ", 8" 'Bending 10, 10', 10 ", 10" 'Straight piece 12 Thread 14, 14' End 16 Fiber 18 Spring 20 Cylinder surface 22, 22 'Flank 24 Thread groove 26 Brick 28 Insulation 30 Insulation 32 Wall 34 Wall 36 Injection channel 38 Injection channel 40 Opening 42 Beam 44 Tracks 46 UV light source 48 Surface (uneven) 50 UV light
    Ri, R2 Radius of curvature D-ι, D2 Diameter
    Li, L2 Width cc Angle X, Y Axis
    权利要求:
    Claims (11)
    [1]
    A fiber-reinforced semi-finished product (2) comprising an outer flexible casing tube (4), characterized in that the semi-finished product (2) comprises a resin impregnated fiber bundle (16), wherein the resin is uncured and allows the semi-finished product (2) to be maintained in an uncured state. at least 24 hours at room temperature (23 ° C) and the casing tube (4) is equipped with one or more injection channels (36, 38).
    [2]
    Semi-finished product (2) according to claim 1, characterized in that the semi-finished product (2) comprises a resin adapted to be cured: a) thermally at a predefined temperature, preferably above 80 ° C, such as 80 ° C. (B) using UV light; (c) using microwave; (d) using induction; or (e) using combinations of heat and / or UV light and / or microwave or / or induction.
    [3]
    Semi-finished product (2) according to claim 2, characterized in that the resin comprises epoxy, phenolic system, vinyl ester, polyurethane or other suitable types.
    [4]
    Semi-finished product (2) according to one of the preceding claims, characterized in that a viscosity regulating additive is used to control the viscosity of the resin.
    [5]
    Semi-finished product (2) according to one of the preceding claims, characterized in that the resin is uncured so that the casing tube can be formed in a desired geometry.
    [6]
    Semi-finished product (2) according to one of the preceding claims, characterized in that the casing pipe (4) comprises an external thread (12) extending along at least part of the casing pipe (2).
    [7]
    Semi-finished product (2) according to claim 4, characterized in that the casing tube (4) is cylindrical and comprises an external thread (12) extending along the entire length of the casing tube.
    [8]
    Semi-finished product (2) according to one of the preceding claims, characterized in that the semi-finished product (2) is sealed in at least one of its end pieces (14, 14 '), preferably in both ends (14, 14').
    [9]
    Semi-finished product (2) according to one of the preceding claims, characterized in that the casing tube (4) is translucent or transparent.
    [10]
    Semi-finished product (2) according to claim 9, characterized in that the sheath tube (4) used contains a light-curing resin.
    [11]
    A fiber-reinforced composite structural member made from a semi-finished product (2) according to one of the preceding claims.
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    法律状态:
    2020-12-03| PBP| Patent lapsed|Effective date: 20200331 |
    2021-07-14| PGE| Re-establishment of rights: approved|Effective date: 20210629 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201500202A|DK178510B1|2015-03-31|2015-03-31|Semi-finished and structural element made from the same|DKPA201500202A| DK178510B1|2015-03-31|2015-03-31|Semi-finished and structural element made from the same|
    PCT/DK2016/050085| WO2016155743A1|2015-03-31|2016-03-21|Semimanufacture and construction element made thereof|
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