FR2578483A1 - METHOD FOR MANUFACTURING REINFORCED PROFILE ELEMENTS - Google Patents

Abstract

PROCESS FOR MANUFACTURING REINFORCED PROFILE ELEMENTS. THE PROFILE 100 ELEMENT INCLUDES A 100A EXTRUDED HOLLOW BODY, IN WHICH 300 LONGITUDINAL CAVITIES ARE PROVIDED, EACH FILLED WITH A REINFORCING FILLING, BASED ON A HARDENABLE SYNTHETIC MATERIAL. WHILE CARRYING OUT THE FILLING OF EACH CAVITY OF THE HOLLOW BODY 100A WITH SYNTHETIC MATERIAL, A REINFORCEMENT CORE 200 IS PROVIDED IN EACH CAVITY, WHICH EXTENDS THE ENTIRE LENGTH OF THE HOLLOW BODY. EACH REINFORCEMENT CORE 200, MADE OF A MATERIAL THAT RESISTS TO ELONGATION, OCCUPIED IN THE CORRESPONDING CAVITY OF THE HOLLOW BODY 100A A POSITION SUCH AS, WHEN THE PROFILE ELEMENT 100 WORKS IN BENDING, THE REINFORCEMENT CORE 200 IS REQUESTED IN TRACTION.

Description

The present invention relates to a method for producing

  tion, to produce reinforced profiled elements; this

  assigned is to first extrude a body

  hollow profile, which comprises at least one longitudinal cavity

  then, to fill each cavity of the hollow body with a filling

  reinforcement, based on a hardened synthetic

  corn. To mechanically reinforce a profiled element such as, for example, a curtain rail made of plastic material and comprising at least one corridor, it is known to provide in this profile a longitudinal cavity that extends from one end to the other. another of the profile, and to fill this longitudinal cavity with a filling of synthetic material; it is advantageous to use, for this filling, a mixture

  fiber-synthetic material, the fibers being able to

  Gently wood fibers to save weight.

  Such a profile, reinforced by filling a cavity

  longitudinally lined with hardened synthetic

  or a mixture of synthetic fibers and fibers of this

  wise being realized at the time of the extrusion of the hollow body

  profile, is suitable for use cases where this

  It is not particularly stressed in bending, as for example for curtain rails, because these rails are usually fixed flat to the ceiling of a room, by fasteners located in several places, so that this rail works relatively little. In flexion, however, when using such profiled elements, for example in the form of planks, to produce, for example, the formwork of a balcony, this profiled element is

  particular qualities of resistance, especially in

  with regard to the charges to be borne.

  Now the reinforcement of the profiled element that can be obtained with the known method explained above is no longer

sufficient in this case.

  The object of the invention is therefore to improve the process

  n reinforcing the profiled element in question, as recalled above, to allow this profiled element to withstand significant bending forces, while having a relatively low weight, so as to maintain within relatively small limits deformation in bending of this profiled element, even if it has a fairly large length. According to the invention, the method of manufacture of the kind

  defined above, to produce profiled elements reinforcing

  This is characterized in that the plastic filling of each longitudinal cavity of the hollow body is carried out, while at the same time having in each longitudinal cavity at least one reinforcing core which extends over the entire length.

  hollow body; each reinforcing soul is made of a material

  riau that resists elongation; and each core occupies in the corresponding cavity of the hollow body a position such that, when the profiled element is working in flexion, the soul

is stressed in traction.

  Thus, the invention provides for completing the filling operation by extrusion of each longitudinal cavity of the hollow body of the profiled element, which is filled with a material

  reinforcing synthetic material, by installing in this cavity

  reinforcing soul during this same operation of ex-

  trusion, so that the soul is firmly embedded in the reinforcing synthetic material, and undergoes a clamping effect over its entire length, after curing of this synthetic material; we arrange, in addition, for the soul

  reinforcement occupies, in relation to the transverse section,

  of the hollow body, a position such that, when the profiled element is working in flexion, the reinforcement core undergoes a

maximum stress in tension.

  Experience shows that this mode of reinforcement is

  particularly advantageous when it comes to achieving

  board-shaped profiled element, intended for

  for example, to make the formwork of a balcony.

  Even in case of breakage of the profiled element, the two lips of the broken part are still subject to

  the other by the reinforcement core, and the profiled elements

  following the process according to the invention

so very high security.

  A mixture of synthetic material and reinforcing fibers can be used to make the hollow body of

  the profile element, and to constitute the filling of each

  that longitudinal cavity of the hollow body. In an advanced way

  the reinforcing fibers which are used in a mixture of synthetic fibers and fibers consist of wood fibers

  Thanks to the invention, it is thus possible to realize

  profiled elements whose weight is particularly small, but which can, moreover, withstand bending efforts

  important, without significant deformation in flexion.

  The reinforcement core incorporated by extrusion into the

  pleating in synthetic material can be made of the most diverse materials, and present, in addition, the shapes

  the most diverse. Advantageously, one can realize

  the reinforcing metal core, such as steel, iron, copper or nickel, but also make it with glass fibers or with a glass wire, or with fiberglass.

  textile material, or with twisted or cabled fibers

  of the various abovementioned materials.

  On the other hand, in each longitudinal cavity of the hollow body of the profile element, not only can

  one soul of reinforcement, but still several souls, incor-

  extrusion pores, in order to further increase the

  flexural strength of the shaped element thus produced.

  Moreover, according to each case of use

  dere, the reinforcement core may have a transverse section

  dirty circular, rectangular, square or tubular.

  According to an advantageous embodiment of the invention,

  the reinforcing core arranged in each longitudinal cavity

  of the hollow body of the profiled element is put in

  at the same time as a filling of synthetic

  than foam. This variant of the process according to the invention

  This is a particular advantage because the proliferation of

  the foam, which occurs after the put in place by extru -

  of the filling synthetic material, ensures that

  clamping force which is exerted on the reinforcing core on all sides. This ensures a firm coating of the reinforcing core in the synthetic filling material, and the soul undergoes

  thus a recessed effect over its entire length.

  Finally, according to another variant of the process according to the invention, by extruding the hollow body of the profiled element, it is possible to incorporate at the same time into the

  walls of the latter at least one additional reinforcement core

  re, by arranging each of these additional souls in locations of the cross-section of the hollow body o exists

  a greater thickness of material. Thus, thanks to the invention

  a hollow body reinforced by at least

  an extra soul, which already reduces in an impor-

  carrying the flexibility of the hollow body.

  It is obvious that we can give to the profiled element

  performed according to the process according to the invention of the

  cross-sections of various forms, such as, for example,

  a circular section, or a rectangular section (in

  me of board), or a section of another form.

  The process according to the invention lends itself.

  This is particularly true for the production of plastic window frames and for forming formwork profiles for balconies, as well as for producing profile elements of all kinds intended for working. in flexion and who must

  have a high flexural strength.

  The invention also relates to a profiled element

  broken in accordance with one of the aforementioned embodiments of the

granted according to the invention.

  We will now describe, as an example, some.

  embodiments of the invention, presented hereinafter with reference to the accompanying drawings, in which:

  Fig. 1 is a transversal section of a profited element

  one with a single reinforcement core, having a circular cross section; Fig. 2 represents another embodiment.

  the invention, corresponding to a profiled element having

  the same shape in cross-section; and 3 is a cross-section of a shaped element shaped in the form of a board, which is capable of

  particularly high bending forces.

  It is shown in FIG. 1 a cross section

  a profiled element 1 in the form of a rod.

  This profiled element consists of a tubular hollow body {a which, according to the process according to the invention,

  can be prepared in advance for example by extrusion

  as known. After curing of this tubular profiled body 1a, the inner cavity 3 is filled with a filling made of synthetic material provided with a central reinforcing core 2, for example by operating by extrusion, and the structure thus obtained is cured. The soul 2, which can have the most diverse configurations, has the shape of a

  rod of circular section, in the embodiment

  As an example in FIG. 1.

  It is interesting to have the soul 2 in the cavity

  3 in a location such as, where the shaped element

  is in flexion in the direction transverse to its elongation, the reinforcing core 2 is stressed in tension. So, so

  the soul 2 is chosen for a material that is very resistant to

  long, the core 2 constitutes for the profiled element 1 a reinforcement

  strong with regard to the bending stresses.

  In the embodiment of FIG. 2, we consider

  re a profiled element 10 consisting of a prefabricated tubular hollow body 10a, which, unlike the embodiment

  of FIG. 1, has four longitudinal cavities 30 dis-

  laid side by side and separated by ribs.

  In addition to the invention, the four cavities of the body

  prefabricated hollow 10a of the profiled element with fillings

  wise of plastic, set up by means of another

  extrusion operation, and each having a particular core

  In this embodiment considered by way of example, the reinforcement core 20 is also shaped

  stem, of round cross section.

  With the cross-section indicated above for the hollow body of the profiled element, an improved bending stiffness is already obtained for the latter. But this stiffness is still considerably increased by the plastic lining, and especially by the four souls of

reinforcement 20.

  In the embodiment of FIG. 3, we consider a hollow profiled element having the cross-sectional shape of a board, and comprising a hollow body with three

  cavities 300, separated from each other by partitions 400.

  This profiled element 100 comprises a prefabricated hollow body

  which has in itself a particular configuration

  re: In the material of the walls of the hollow body 100a we have

  already foreseen, in various places where this material is

  a larger section, such as for example near the corners of the central cavity, a reinforcement core 500, embedded in the structure of the hollow body, and extending over the entire length thereof. These souls of reinforcement 500

  are thus arranged in selected places so that,

  that the hollow body works in bending (perpendicular to the faces corresponding to the long sides of its section), there are at least two reinforcement webs 500 which are stressed in tension. We thus obtain already a significant stiffness

  for the prefabricated hollow body of the profiled element.

  In addition, the plastic filling 300,

  as well as the reinforcing webs 200 in the form of

  increase the stiffness in flexion, so that the

  profile according to FIG. 3 can be used in a particularly advantageous manner in places where can occur significant bending forces, but also when a breakage of this profiled element could have dangerous consequences, -like for example in the case of a

  formwork for a balcony, or a floor slab of a bal-

  con. Even in case of breakage of the profiled element of FIG.

  for example, as a result of excessive

  xion, the two parts of the profiled element whose union has been damaged are not completely disunited, because they are still connected to each other by the reinforcing cores 500 and 200. For the case of use indicated above , we use

  advantageously, to achieve these reinforcing souls, a material

  very resistant material, such as steel.

  For a competent professional, it is obvious that one can modify within very broad limits the shape of the

  cross section of the reinforcement core, and use a variety of

  materials for it, with a view to adapting to each

  case of use and to each particular form of

profile.

  In a very advantageous way, one can realize the

  the profiled element according to the invention using for filling the compartments 300 a foamable plastic material, such as, for example, a mixture,

  which can be made of plastic foam and

  fibers. Indeed, the proliferation of the foam improves the

  reinforcing webs 200 embedded in the filling

  plastic material, ensuring in all

age of embedding these souls.

  The reinforcing cores may each be constituted by a single wire or a single fiber, but also by

  twisted or wired fibers; these ames of reinforcement can

  also have a tubular shape.

  On the other hand, the material of these reinforcing cores may consist of various materials, such as glass, a

  textile material, a synthetic material, a synthetic material

  fiberglass reinforced, or

copper, nickel, etc.

  To achieve the plastic filling and

  if the hollow body of the shaped element conforms to the in-

  vention, a fiber-fiber mixture can be advantageously used.

  plastic material, and in particular a mixture of plastics

tick-wood fiber.

  In the latter case, a profiled element is obtained which has a high mechanical resistance to the bending forces, while having a relatively low weight.

  shaped element is therefore particularly advantageous for

  when it is important to have a structure

  low weight, while requiring for it a resistance

high mechanical strength.

  As a plastic material, it is possible to use a chloride

  polyvinyl (PVC), but also any other synthetic material

appropriate tick.

  It is also possible to provide, on the surface of each of the reinforcing cores, recesses, grooves or notches, having an orientation perpendicular to the

  meaning of the length of the soul in question, to ensure an

  firm core of the soul in the surrounding plastic,

  this penetration of this plastic in the aspec

rites of the surface of the soul.

  It goes without saying that various technical details provided

  in the description and shown in the figures are im-

bearing for the invention.

Claims (19)

  1. Process for manufacturing reinforced profiled elements   first extrusion   shaped hollow body which has at least one longitudinal cavity   tudinal, then to fill each longitudinal cavity of the hollow body with a reinforcing filler, based on a curable synthetic material; the method being characterized in that   this filling is made of synthetic material from each   that longitudinal cavity of the hollow body (la; 10a; 1OOa),   while having in each cavity at least one soul of   strong (2; 20; 200) which extends over the entire length of the hollow body; each reinforcing core being made of a material that resists elongation; and each reinforcing core (2; 200) occupying a corresponding position in the corresponding cavity of the hollow body, such that when the profiled element (1;   10; 100) works in flexion, the reinforcement soul is solicited in tension.   2. Method according to claim 1, characterized in   what is used for the filling based on syn-   thetic a hardenable mixture synthetic-fiber material.   3. Method according to claim 2, characterized in   what the fibers of the synthetic-fiber blend con- are made of wood fibers.   4. Method according to claim 2, characterized in that   that the fibers of the synthetic-fiber blend try in fiberglass.   5. Method according to claim 2, characterized in   what the fibers of the synthetic-fiber blend con-   are made of fibers of textile material or metal.   6. Method according to one of claims 2 to 5,   characterized in that the synthetic material of the material mixture   Synthetic fiber is polyvinyl chloride (PVC).   7. Method according to one of claims 2 to 6,   characterized in that the synthetic material of the material mixture   synthetic fiber is a synthetic material suitable for produce a foam.   8. Method according to claim 1, characterized in that the reinforcing core (2; 20; 200) consists of a fiber or by wire.   9. The method of claim 1, characterized in that the reinforcing core is constituted by several fibers or son, twisted or wired together. 10. Method according to claim 1, characterized in that the reinforcing core is constituted by a material in a strip,   of substantially rectangular section.   11. Method according to claim 1, characterized in that the reinforcing core is constituted by a tubular material, of substantially circular section.   12. Method according to one of claims 1 to 11,   characterized in that the hollow body is made by extrusion   the profiled element, by putting in place during this   extrusion line an additional reinforcing core, which is embedded in the extruded material of the walls of the hollow body,   in portions of the hollow body where there is a greater thickness material.   13. The method of claim 12, characterized in that   that the additional reinforcing core is constituted by a   or wire, or by multiple wires twisted together or tied together corn.   14. Method according to one of claims 8 to 13,   characterized in that the reinforcing core (2; 20; 200; 500) is   made of textile material, or glass, or metal.   15. The method of claim 14, characterized in that the reinforcing core is steel, iron, copper, or nickel.   16. Process according to one of claims 1 to 15,   characterized in that the hollow body (1A, 10a, 100Oa) of the element   The profiled section is made of a synthetic material mixture. 17. The method of claim 16, characterized in   what the fibers of the synthetic-fiber blend consist of try in wood fibers.   18. Method according to one of claims' and 8 to 15,   characterized in that there is provided along the surface of each   that core recesses, such as grooves or notches, oriented transverse to the direction of the length of soul.   19. Reinforced section element, characterized in that it is produced according to the manufacturing method according to one   any of claims 1 to 18.