WO2015052130A1

WO2015052130A1 - Composite profile, reinforcing strip for a composite profile, and a method for producing a composite profile

Info

Publication number: WO2015052130A1
Application number: PCT/EP2014/071339
Authority: WO
Inventors: Karl Gebesmair; Leopold Weiermayer
Original assignee: Greiner Tool.Tec Gmbh
Priority date: 2013-10-07
Filing date: 2014-10-06
Publication date: 2015-04-16
Also published as: DE102013220211A1; EP3055476A1; EA032396B1; PL3055476T3; EA201690694A1; ES2814999T3; CN105637163A; EP3055476B1

Abstract

The invention relates to a composite profile made of plastics, designed as a hollow profile with at least two reinforcing strips arranged in the interior, characterized in that the at least two reinforcing strips (1A, 1B) are formed at least partially of thermoplastic plastic with embedded continuous glass and/or mineral fibers and/or other reinforcing fibers, and at least one of the reinforcing strips (1A, 1B) has at least one angled section (5A, 5B) parallel to the longitudinal axis of the composite profile (10), wherein the distance (A) between the at least two reinforcing strips (1A, 1B) and the respective adjacent outer walls (11) of the composite profile (10) in the region of the non-angled section corresponds to 0.1 to 3 times the wall thickness (D) of the outer wall (11). The invention also relates to a reinforcing strip for a composite profile and to a method for producing a composite profile.

Description

Composite profile, reinforcing strip for a composite profile and a method for producing a composite profile

The invention relates to a composite profile with the features of claim 1, a reinforcing strip for a composite profile with the features of

Claim 1 1 and a method for producing a composite profile with the features of claim 12.

Extruded plastic profiles are today widely used in the field of windows, doors or other components. Especially with larger ones

Components have the plastic profiles a considerable length, so that in particular the dimensional stability has great importance. at

Windows are the profiles that make up the frame and the wing, mainly burdened by the weight of the insulating glass panes and by the wind pressure. These forces are transmitted through the profiles in the building. The profiles must not deform too much, in particular, the deflection is to be seen critically. In order to minimize this deflection, a minimum bending stiffness of the profiles depending on the size of the window is required. Since the beginning of the use of plastic windows, the plastic profiles are replaced by inserting so-called U-shaped

Reinforced reinforcing iron. This is done in a separate step in the course of window assembly, which of course also causes corresponding costs. For about ten years, there has been a tendency to perform the plastic profiles themselves sufficiently stable, thereby reducing the total cost of the windows. This is done either by coextrusion, in which the Au ßenfläche is still made of the base material, usually PVC, and inside a glass fiber reinforced plastic is arranged (see, for example.

DE1 02007015318 A) or by combining the profile with internal reinforcing strips made of metal or likewise fiber-reinforced plastics (see, for example, DE 19933099 A1), which then form inner walls.

To improve the mechanical properties of the plastic profiles, it makes sense to create special plastic profiles and methods for producing such plastic profiles.

The object is achieved by a composite profile with the features of the claim 1 solved.

In this case, at least two reinforcing bands are arranged in the interior of the composite profile. The at least two reinforcing tapes are at least partially formed of thermoplastic with embedded continuous glass and / or mineral fibers and / or other reinforcing fibers. At least one of the reinforcing bands has at least one section which is angled parallel to the longitudinal axis of the composite profile. Further, the distance between the at least two reinforcing ribbons and each corresponds

adjacent outer wall of the composite profile in the region of the non-angled portion 0.1 to 3 times the wall thickness of

Outer wall.

Such a composite profile has a combination of features that together result in a dimensionally stable composite profile. At the same time, the choice of the distance ensures that the reinforcing tapes are not too close to the

Surface are, but not too far inside the composite profile.

It is advantageous if the angle between the at least one angled portion and the non-angled portion of the at least two reinforcing bands is more than 10 ° and less than 150 °, in particular between 20 ° and 90 °. The angling in the reinforcing band increases the flexural rigidity of the band itself. It is also advantageous if the distance between the at least two

Reinforcement bands and the inside of each associated

Outer wall of the composite profile between 0.1 and 10 mm, in particular between 0.5 and 3 mm. This dimension ensures that the reinforcing tapes are not too close to the outer surface of the composite profile, which experience has shown could cause deterioration of the surface quality. Also, the upper limit of the distance prevents the reinforcing ribbons from being too close to the centroid axis line of the composite profile. The greater the distance of the stiffening ribbons from the centroid axis line, the greater the moment of resistance of the entire composite profile.

For a particularly stable embodiment of the reinforcing tapes, it makes sense if at least one of the at least two reinforcing tapes accounts for 30 to 70% by volume of glass fibers and / or mineral fibers and / or other Reinforcing fibers embedded in a thermoplastic matrix, in particular in PET. When corner welding of the window, this matrix softens, so that the reinforcing fibers can escape laterally when forming the weld seam and the concomitant shortening in the area of the end faces and can also mutually penetrate one another at the front end, so that the reinforcing tapes themselves to a certain extent weld.

Furthermore, it is advantageous if at least one spacer is provided for producing the defined distance between the at least two reinforcing bands and the inside of the composite profile. In particular, this applies if at least one spacer is arranged in the longitudinal direction of the composite profile on one of the at least two reinforcing tapes, in particular in one piece on the reinforcing strip and / or made of plastic of the composite profile,

is formed in particular as a web and is arranged on the wall of the composite profile and / or is formed as a separate part. There are thus several ways to arrange spacers between reinforcing bands and the composite profile.

To improve the connection between the reinforcing bands and the plastic of the composite profile, it is advantageous if at least one edge on each of the at least two reinforcing bands profiling, in particular a line-like profiling and / or knurling to create a frictional and / or positive connection with the Extrusion plastic profile is arranged. Thus, the thrust forces occurring at a curvature of the composite profile can be transmitted efficiently.

The connection between the reinforcing tapes and the plastic of the composite profile may additionally or alternatively be improved if the at least two reinforcing tapes on the surface of a

Connecting layer for producing a material connection with the extrusion plastic profile by welding. The bonding layer may have a proportion of PVC for this purpose.

The object is also achieved by a reinforcing strip for a composite profile of the type mentioned according to claim 1 1, wherein the reinforcing strip has a parallel to the longitudinal axis of the reinforcing strip angled portion. The object is also achieved by a method having the features of claim 12. At least one angling and / or a profiling of an edge takes place by thermal deformation on at least one of the at least two reinforcing ribbons inline during the extrusion process prior to insertion into an extrusion die.

The invention is described below with reference to in the drawings

illustrated exemplary embodiments explained. 1 shows a sectional view of a first embodiment of a

Composite profile with two reinforcing bands;

Fig. 1A is a sectional view of a first reinforcing tape for the first embodiment;

Fig. 1B is a sectional view of a second reinforcing tape for the first embodiment;

Fig. 2 is a sectional view of a second embodiment of a

Composite profile with two reinforcing bands;

Fig. 2A is a sectional view of a first reinforcing tape for the second embodiment; Fig. 2B is a sectional view of a second reinforcing tape for the second embodiment;

Fig. 3 is a sectional view of a semi-finished product for the production of reinforcing strips.

In Fig. 1, a first embodiment of a composite profile 1 0 is off

Plastic shown. This formed as a hollow profile composite profile 1 0 is prepared by extrusion in a conventional manner, wherein in

Following some features of the manufacturing process for some embodiments will be presented. Such a composite profile 10 is used, for example, as a frame to enclose an insulating glass pane 15. The composite profile 1 0 has two in the first embodiment

Reinforcement bands 1 A, 1 B, which are shown separately in Figs. 1 A and 1 B. The reinforcing tapes 1 A, 1 B are at least partially, but in particular completely formed of a thermoplastic material with embedded continuous glass and / or mineral fibers and / or other reinforcing fibers.

The reinforcing tapes 1 A, 1 B may have a proportion of 30 to 70% by volume of reinforcing fibers embedded in a thermoplastic matrix, in particular in PET.

Such reinforcing bands 1 A, 1 B have a high mechanical

Strength at low weight, which is particularly advantageous over metallic reinforcements. In alternative embodiments, more than two gain bands 1 A, 1 B may also be used.

The reinforcing tapes 1 A, 1 B have angled portions 5A, 5B and a non-angled portion, which in the assembly in

Essentially parallel to a Au ßenwandung 1 1 of the composite profile 1 0 is arranged.

The first reinforcing tape 1 A (see also Fig. 1A) has at one edge a first angled portion 5A forming an angle OA = 90 with the non-angled portion.

At the opposite edge of the first reinforcing tape 1 A, a second angled portion 5 B is arranged. This forms with the non-angled portion of the first reinforcing tape 1 A an angle OB of about 170 °. The angled portions 5A, 5B are in this

Embodiment designed differently sized.

The second reinforcing tape 1 B has two angled portions 5A, 5B, each angled at an angle OA = OB = 90 ° from the non-angled portion of the second reinforcing tape 1 B. Basically, the angles CIA, OB can be more than 1 0 ° and less than 150 °, these angles, as shown in Fig. 1, on that of the

Outside wall 1 1 side facing away from being measured. In the first embodiment, reinforcing bands 1A, 1B are shown, each having two angled portions 5A, 5B. In alternative embodiments, only one angled portion or more than two angled portions may be present. The reinforcing bands 1 A, 1 B are arranged at a relatively small distance A from the outer walls 1 1 of the composite profile 10. The distance A is between 0.1 to 3 times the respectively adjacent outer wall 1 1. The distance A is determined between the inside of the outer wall 1 1 and the non-angled portion of the reinforcing tape 1 A, 1 B. This non-angled portion of the reinforcing tape 1 A, 1 B is located in

Substantially parallel to the inside of the outer wall 1 1.

In typical composite profiles 10, the distance A between the at least two reinforcing tapes 1 A, 1 B and the inside of the outer wall 1 1 of the composite profile 10 is between 0.2 and 10 mm, in particular between 0.5 and 3 mm.

The thus selected distance A ensures that the flatness of the outer wall 1 1 is not affected by the reinforcing strip and equally the reinforcing band 1 A, 1 B is not too far in the interior of the composite profile 10.

The reinforcing tapes 1 A, 1 B unfold the greatest effect when they are positioned as far as possible from the gravity axis line S of the composite profile 10. It is therefore desirable to the reinforcing bands 1 A, 1 B as far outside, so in the case of a window profile far away from the glass plane to install. On the other hand, in the extrusion process in the composite profile 10 caused by the different changes in length during cooling considerable internal stresses. The reinforcing bands 1 A, 1 B are subjected to pressure, the plastic (eg PVC) of the composite profile 10 to train. The entire composite profile 10 is straight when the internal stresses cancel each other out. At a sectional area, the internal stresses are forced to zero, resulting in deformations. In the case of a window profile, which has significant asymmetries, this leads to a "tilting" of the rollover inwards (ie towards the

Glass plane of the insulating glass 15) in the range up to about 1 mm, which can lead to a window frame after the welding of the corners to a malfunction. The angled reinforcing profiles 1 A, 1 B have on the one hand even a higher rigidity, which acts against tipping and on the other hand, the angled portions 5A, 5B are more central to the

Positioned mid-plane of the rollover area, so that in this

Part of the composite profile 10, the tensile stresses in the PVC behave approximately symmetrically even after the separation process.

In the first embodiment, the two reinforcing tapes 1 A, 1 B on the sides, which are oriented to the outer sides 1 1 of the composite profile 10, respectively spacers 2. These ensure that the distance A between the reinforcing tape 1 A, 1 B and the inside of the outer wall 1 1 is maintained in a defined manner.

In the first embodiment, the outer wall of the composite profile 10 has short webs as spacers 2, which prevent the reinforcing profile 1 A, 1 B applied over a large area on the outer wall and that a distance A is maintained in a defined manner. The spacers 2 are made here in one piece with the plastic of the composite profile 10.

The spacers 2 prevent direct contact with the viewing surface (i.e., the viewing surface of a window profile, substantially parallel to the glass surface, in the installed state of a window, ie on the room side or facade side); or at least largely avoided. In direct contact, this viewing surface would have slight waves which interfere optically and, especially when viewed at a shallow angle, cause highly distorted mirror images. This avoids that bumps of the

Mark reinforcing bands 1 A, 1 B. Also could be minimal

Thickness variations of the outer wall of the composite profile 10 are not displaced inward, because the surface of the reinforcing profile would be dominant in an immediate contact. In alternative embodiments, the spacers 2 may additionally or alternatively also be arranged on the reinforcing tape 1 A, 1 B (see FIG. 2).

The spacers 2 can each be integrally applied to the reinforcing bands 1 A, 1 B or, for example, by extrusion. Also, it is possible that the Spacer 2 are arranged as a separate part between the reinforcing bands 1 A, 1 B and the plastic of the composite profile 10.

In order to allow a shear-resistant seat of the reinforcing bands 1 A, 1 B in the plastic part of the composite profile 10, are at the edges of the

Reinforcement bands 1 A, 1 B profiles 3 arranged. Alternatively, the profiles can also be arranged only at one edge of the reinforcing tapes 1 A, 1 B. The profiling 3 may e.g. as knurling and / or as

Line structure be formed. The Profilierung 3 can in the course of the

Prefabricating operation of the reinforcing tape are introduced by e.g. embossing is carried out in connection with heating and / or milling or pressing in the cold state.

Thus, a frictional and / or positive connection between the reinforcing bands 1 A, 1 B and the plastic profile can be achieved.

The connection of the reinforcing bands 1 A, 1 B to the plastic part of

Composite profile 10 can be increased if at least a part of the surface of at least one of the reinforcing bands 1 A, 1 B a

Connecting layer, with a cohesive connection to the

Plastic part of the composite profile 10 can be made. This can e.g.

by a specific application of a PVC layer on one of the

Reinforcement tapes 1 A, 1 B happen. In Fig. 3, a semifinished product 6 is shown, which is used as the starting product for

Reinforcement bands 1 A, 1 B can be used with integrally formed connecting layer 5. This semifinished product essentially comprises continuous glass fibers embedded in a thermoplastic matrix, the width of this semifinished product being significantly greater than the width of a single reinforcing strip 1 A, 1 B, e.g. 500 mm. Following the production of this fiber-thermoplastic composite material, a thin bonding layer 5 made of a plastic, which has a high bonding area, is formed in an inline process on both outer surfaces

Has bonding strength with both the matrix of the composite material and with the plastic of the composite profile 10 and is weldable to the latter, e.g. made of PVC, applied. This can conveniently be done by

Extruding the plastic melt or by laminating a

prefabricated film with heating and pressing done by rolling. Due to the short-acting high contact forces, the adhesion between the bonding layer and the matrix is particularly promoted, even if, in terms of material, true welding, as in the case of PET and PVC, is not possible. Comparable high contact forces can during the extrusion process of

Composite profiles are not applied, so that with the help of the connecting layer during the extrusion process then at lower

Contacting forces a real welding and thus an increased

Joining strength can be achieved. The connecting layer 5 can also form the spacers 2. From this semifinished product 6 then the required widths for the individual Verstärkungsbänderl A, 1 B are separated and then fed to the further confectioning process.

Thus, there is a composite profile 10, in which the physical configurations of the reinforcing bands 1 A, 1 B, the shape of the reinforcing bands 1 A, 1 B and the arrangement of the reinforcing bands 1 A, 1 B in the composite profile 10 together ensure that a mechanically stable and aesthetically

high quality composite profile 10 is obtained.

2, 2A and 2B, a second embodiment of a composite profile is shown, which substantially corresponds to the first embodiment, so that reference can be made to the above description. In the second embodiment, the reinforcing tapes 1 A, 1 B itself, the spacers 2, which are integrally formed on the reinforcing tape. In the production of composite profiles 10, at least one of

Reinforcement tapes 1 A, 1 B e.g. are unwound from a roll, wherein the bend of the at least one portion 5A, 5B and / or the

Profiling 3 of the edge area inline during the extrusion process of the composite profile 1 0 done. This will be the raw material for the

Reinforcement tapes 1 A, 1 B e.g. unwound from a roll and it

goes through a heating tunnel. Subsequently, the profiling 3 is applied in the edge regions 3 of the reinforcing tape 1 A, 1 B and there is the bending of the angled section 5A, 5B. The still largely hot reinforcing band 5A, 5B is then fed to the extrusion die and then encapsulated with the plastic profile of the composite profile 1 0.

The flat raw material for the reinforcing tapes 1 A, 1 B can on rolls stored wound up and transported to customers. On site, then a transformation - as described above - take place. For already angled (ie, beveled) reinforcing bands a relatively large winding radius is required, which is also manageable. That is, appropriate

Reinforcement belts with the required contour and edge formation can also be produced independently of the extrusion process of the composite profile in a separate manufacturing or assembly process. These fully prefabricated reinforcing tapes also fall within the scope of protection when placed in a composite profile according to the features of the claims.

LIST OF REFERENCE NUMBERS

1 A first reinforcement band

1 B second reinforcing tape

2 spacers

3 profiling

5 bonding layer

6 Semi-finished product for a reinforcement band

5A first angled portion of the reinforcing tape

5B second bent portion of the reinforcing tape

1 0 extrusion plastic profile

1 1 Exterior wall

15 insulating glass pane

A distance between the reinforcing strip and the inside of the outer wall

D Wall thickness of an external wall

d Thickness of a tie layer

S gravity axis line

C (A angle between the first angled portion and the reinforcing band

OB angle between the second angled portion and the reinforcing band

Claims

claims

1. Composite profile made of plastic, designed as a hollow profile with at least two arranged inside reinforcing bands, characterized in that the at least two reinforcing bands (1 A, 1 B) at least partially made of thermoplastic material with embedded endless glass and / or

Mineral fibers and / or other reinforcing fibers are formed and at least one of the reinforcing ribbons (1 A, 1 B) at least one parallel to the longitudinal axis of the composite profile (10) angled portion (5A, 5B), wherein the distance (A) between the at least two reinforcing ribbons (1A, 1B) and the respective adjacent outer wall (11) of the composite profile (10) in the region of the non-angled portion 0.1 to 3 times the

Wall thickness (D) of the outer wall (11) corresponds.

2. Composite profile according to claim 1, characterized in that the angle (c, OB) between the at least one angled portion (5A, 5B) and the non-angled portion of the at least two

Reinforcing tapes (1A, 1B) is more than 10 ° and less than 150 °, in particular between 20 ° and 90 °.

3. Composite profile according to claim 1 or 2, characterized in that the distance (A) between the at least two reinforcing bands (1 A,

1 B) and the inside of the respective associated outer wall (11) of

Composite profile (10) between 0.1 and 10 mm, in particular between 0.5 and 3 mm.

4. Composite profile according to at least one of the preceding claims, characterized in that at least one of the at least two reinforcing tapes (1 A, 1 B) a proportion of 30 to 70 vol .-% glass fibers and / or mineral fibers and / or other reinforcing fibers, embedded in a thermoplastic matrix, in particular in PET.

5. Composite profile according to at least one of the preceding claims, characterized by at least one spacer (2) for

Production of the defined distance (A) between the at least two

Reinforcing bands (1A, 1B) and the inside of the composite profile (10).

6. Composite profile according to claim 5, characterized in that at least one spacer (2) in the longitudinal direction of the composite profile (10) on one of the at least two reinforcing bands (1A, 1B) is arranged, in particular integrally on the reinforcing tape (1 A, 1 B) and / or on

Plastic profile of the composite profile (10), in particular as a web is formed on the wall of the composite profile (10) is arranged and / or is formed as a separate part.

7. A composite profile according to at least one of the preceding claims, characterized in that at least one edge on each of the at least two reinforcing tapes (1A, 1B) has a profiling (3), in particular a line-like profiling and / or a knurl to create a frictional and / or positive connection with the extrusion plastic profile (10) is arranged.

8. Composite profile according to at least one of the preceding claims, characterized in that the at least two

Reinforcement tapes (1 A, 1 B) on the surface of a connecting layer (4) for producing a material connection with the extrusion plastic profile (10) by welding.

9. Composite profile according to claim 8, characterized in that the connecting layer (4) has a proportion of PVC.

10. Composite profile according to at least one of the preceding claims, characterized in that the at least two

Reinforcement bands (1 A, 1 B) are arranged to increase the moment of resistance in the outer region of the plastic profile (10), in particular at a distance from the centroid axis line (S) of more than 0.7 times the distance (H) of the outer edge to the centroid axis line (S).

11. Reinforcing strip for a composite profile after at least one of

Claims 1 to 10, characterized by a parallel to the longitudinal axis of the reinforcing strip (1) angled portion (5A, 5B).

12. A method for producing a composite profile according to at least one of claims 1 to 10, characterized in that at least one bend and / or profiling (3) of an edge of the at least one of the at least two reinforcing bands (1 A, 1 B) inline with a Extrusion process takes place or at least one bending and / or profiling on at least one of the at least two reinforcing bands (1 A, 1 B) before insertion into a Extrusisonsdüse, wherein this is effected by a thermal deformation.