EP1306513A2 - Seal for glazing, with different elasticity, method for the manufacturing and its use - Google Patents

Abstract

The dry glazing seal is made from two materials with different levels of hardness - a rigid plastic or metal support with a vertical section (20) and an angled return section (21) interacting with the glazed frame (2) and supple lips (5A, 5B, 5C, 6) that are pressed against the glass. <??>The lips are preferably two in number - a lower lip below the level of the frame surface, and an upper lip with a free section (5A) that is pressed against the glass and a return section (5B) that covers the rigid support's return. The vertical section of the support can have a channel (22) to receive an adhesive strip, and the upper supple lip can have a provisional covering layer to protect it from paint.

Description

The present invention relates to the technical sector of dry glazing and, in general, joints between on the one hand a glazing (or a non-glazed solid panel or similar panels) and a support or frame or support of wood or other material of hardness comparable to wood.

The glazing and its support can compose a window, a door, or any other element of this type, skylights, facade elements, curtain walls, and be fixed or opening in any way (pivoting or tilting, etc.). .). All of these options will be designated here by " panes " or " glazing " for simplicity, including in the claims.

Generally, the panes are placed in a frame to form the glazing, and very generally this frame is made of wood, in a known manner. However, those skilled in the art will immediately understand that the invention also covers other types of frame, such as plastic frames of hardness comparable to that of the wood used in glazing, such plastics being known to those skilled in the art. Likewise, the frame may be made of metal or alloy, and such materials are, in this field, also well known to those skilled in the art. Also, the glass can be installed in the frame by a craftsman, that is to say on the site, or the complete glazing can be prefabricated in the factory or workshop. The assembly will be designated by " framework " for simplicity, including in the claims.

The panes can, according to the invention, be absolutely arbitrary, that is to say simple, with phonic and / or thermal double glazing, burglar-resistant, or metallic panels, facing, and the like, the assembly being designated here by "windows" for simplicity, including in the revendications.

Technical problem:

The general technical problem which is posed is that of sealing at water, especially rainwater, between the "window" and its "frame", and generally to "liquids".

We know that those skilled in the art naturally resort to more or less flexible, of various shapes, which are placed between the glass and its frame.

These seals are placed in the gap between the glass and the frame, in particular the glass and the wooden frame, possibly by stuffing this interval, previously, by a putty.

Prior art:

In the prior art, we first used a jar putty applied to the spatula, then a strip of extruded putty, preformed, a joint bottom (adhesive foam and cartridge type silicone seal), or a seal extruded in cellular foam, and similar well-known products.

We also know, more recently, so-called “single hardness” seals which consist of a preformed extruded strip obtained from a single material, usually a styrene-butadiene rubber foam known as "SBR", which is cut or extruded, and placed after the putty. The material can preferably, in the building, be an “EPDM” rubber (ethylene propylene diene monomer).

A prior art of this type is shown in Figure 1, which consists Figures 1A, 1B, 1C and 1D.

Note: in all the appended figures, the same references designate the same items.

In FIG. 1, which consists of FIGS. 1A to 1D, there is shown (FIG. 1A) double glazing composed of two panes 1, with vacuum or air space 4, and internal profile 10, placed in a frame 2 ( e.g. wood). Between the wood and the glass, the gap is filled either with a putty in a preformed strip or with a general reference joint 3 (notably extruded or calendered) of a shape such as for example shown in FIG. 1, that is to say say for example (not limiting) to three flexible lips in the shape of a " W " (or of rectangular section in the case of calendering). The important aspect of the shape, with respect to the problem posed (watertightness or other liquid), lies in the profile of the upper part or upper lip 5. The shape of the joint is studied so that, in theory, the lip 5 extends towards the glass the upper bevelled part 11 of the wooden frame, that is to say that the assembly of said part 11 of the frame and of said upper lip 5 of the seal must not present any solution of continuity at the upper surface. The seals 5.3 are for example made of extruded foam of the EPDM type.

As the skilled person knows, the slope of the bevel of the frame (face 11) is around 15 °.

This also applies to another type of prior art, shown in the Figure 1B, where the seal is a variant of Figure 1A, with four lips 5 (upper) and 6, 7 and 8 (lower), and a protuberance or "tail of "flexible fir" 9, intended to cooperate in a known manner with a groove or groove (not shown as known and obvious) formed in the internal face (that is to say facing the window) of the frame 2 (opening or glazing).

In addition, in order to prevent their elongation at the time of installation, these profiles benefit from an anti-elongation glass wire embedded in the rubber or reinforced adhesive or similar solution.

Figures 1C and 1D show the result that is generally obtained with such seals of the prior art.

In FIG. 1C, the seal is placed too low, and a groove 6 is formed where the water (or other liquid) will stagnate. This water, on the one hand will degrade the wood, and on the other hand will seep through any cracks, irregularities, etc. frame (wood or other material), and / or by capillarity, all the more that the wood (when the frame is made of wood) will have been degraded.

In FIG. 1D, in an attempt to avoid the preceding drawback, the seal has deliberately placed too high, which is unsightly. This position can also be accidental, with the same result.

We tried to overcome these serious drawbacks with a bidurety product, Fully flexible "hat", for example as shown in the Figure 2 (also from the prior art).

This seal is positioned like those in Figure 1, but has a vertical central part 12 rigid, 3 flexible lips 5, 6 and 7, and a Flexible horizontal "cap" 11, intended to prevent the seal from being pushed too deep as in Figure 1C, and to ensure a covering of the frame interface (glazing bead) / joint in order to prevent any water infiltration along this interface.

These glazing joints, generally made of white or brown PVC, which have a rigid part to avoid elongation of the profile during the pose, have the distinction of being implemented in a similar way with classic profiles but benefit from a more sophisticated technique, and faster implementation.

To the knowledge of the applicant, this product has been mentioned but has not never been marketed because it has the same drawbacks.

There is therefore an important and recognized need for an easy to easy to install, leading to good sealing and including preventing any ingress of water or moisture along the frame interface (in particular wooden frame, but not limited to) / joint.

Adhesive products of the adhesive type have been used in the prior art acrylic with reinforcement avoiding them to lengthen during the installation, and these products can also be used according to the invention, as well as any usual product of mastic type, etc. known to those skilled in the art.

Summary of the invention:

The invention relates to a seal for "glazing" intended to cooperate with a "frame", characterized in that it is a seal for glazing, bi-hardness, of the type comprising (as for example, nonlimiting, shown in FIG. 3), a rigid vertical part 20 extended by a “rigid return” 21 adapted so that its lower face covers at least in part, and cooperates in abutment at this covering, with the upper face 11 in a bevel frame 2 (glazing bead), the vertical part 20 comprising at least one flexible upper lip 5, preferably at least two flexible upper lips 5, and intermediate 6 pressing against the window, the upper lip 5 having a "free" part 5A intended to be applied against the window pane, and a “return” part 5B adapted so that its lower face 35 is applied to (that is to say covers), and cooperates with, the upper face of said rigid return 21.

Preferably, the part 5B comprises a part 5C (FIG. 5) which protrudes outward beyond the outer edge of the rigid return 21.

Exterior designates throughout the text the direction away from the glazing, and interior designates the direction that goes towards the glazing.

Reference will be made in this area to FIGS. 3 (general view in section), 4 seal according to the invention alone, and 5 (enlarged view of the assembly of the figure 3).

The invention therefore relates firstly to a seal for "glazing" 1 intended to cooperate with a "frame" 2, characterized in that it is a joint for glazing, bi-hardness, of the type comprising a vertical part rigid 20 extended at its top and towards the “outside” by a "Rigid return" 21 adapted so that its underside covers the less in part, and cooperates in abutment at the level of this covering, with the upper face 11 at a bevel of the frame 2 (glazing bead), the part vertical 20 comprising at least one flexible upper lip 5, preferably at least two upper flexible lips 5, and intermediate (i.e. under, or lower than, lip 5) 6, applying against window, the upper lip 5 having a "free" part 5A "Interior" intended to be applied against the glass, and part “Back” 5B “outside” adapted so that its underside 35 applies to (i.e. overlaps), and cooperates with, the face upper of said rigid return 21.

Detailed description of the invention:

According to a particular embodiment, the seal according to the invention comprises said upper flexible lip 5 with return 5B, and possibly 5C, and an intermediate flexible lip (i.e. located under the upper lip 5) 6.

According to yet another particular and nonlimiting embodiment, the seal according to the invention further comprises a lower lip 8 oriented towards the high like lips 5 and 6.

According to yet another particular embodiment, the seal according to the invention comprises two intermediate flexible lips 6, 7 oriented like the lip 5, or in the shape of a "V", one (6) facing upwards, the other (7) down.

According to yet another particular embodiment, the lower lip 8 and / or intermediate (7) is oriented downwards.

This is only possible when the joint is installed using one or more several adhesive strips, i.e. is placed and fixed on the face internal or internal of the frame BEFORE installing the glazing.

When the joint according to the invention is on the contrary laid in joint "of stuffing ", that is to say AFTER the installation of the glazing, and without strips adhesive (the joint is simply sunk or "stuffed" in the interval between the glazing and the frame), the lips are obligatorily oriented upward because a downward-facing lip "Would return" during the jam.

According to a non-limiting option, the seal includes a means for prevent elongation when laying, such as glass wire, tape armed adhesive, or the like.

According to yet another particular embodiment, the rigid part 20 comprises substantially at mid-height a protuberance or "tail of fir "9 flexible, suitable and intended to cooperate with a groove or groove corresponding formed in the internal face of the frame 22.

The latter option was not shown; we will refer to analogy to Figure 1 B.

According to a first embodiment, the rigid return 21 of the seal is adapted to apply closely, on all (or substantially all) its length, against the upper face 11 at a bevel of the frame (glazing bead). Here "substantially" means that defects, irregularities etc ... may generate small areas where the application is not closely performed.

According to a second (preferred), non-limiting embodiment, the return 21 rigid of the joint is adapted so as not to apply tightly against the upper face 11 at a bevel of the frame, leaving on the contrary remaining a space 30 in the general shape of a "triangle" (Figure 5) from its outer point 40 and its junction with the top of the rigid part 20 (which is also the internal end - that is to say towards the glass - of the surface in bevel 11 of the frame).

According to yet another particular embodiment, (FIG. 6) the internal face of the rigid part 20 comprises, substantially at mid-height, a groove horizontal 22 intended to receive a strip of adhesive 24 for example preformed, of geometry adapted to allow said adhesive or sealant to seal with the frame.

Conversely, one or more adhesive tapes can be positioned 24 vertically or according to any other geometrical arrangement.

This fine groove 22 also normally serves as a guide for laying of staples.

By “thin” here is meant that this thickness should not naturally not disturb the positioning of the "hat" (21, 5B).

According to a nonlimiting option of the invention, the lower face 35 of the "return" part 5B, 5C of the lip 5 is glued to the upper face of the rigid return 21. Any method of assembly forming a one-piece body will of course be acceptable.

According to the best embodiment of the invention, the angle alpha formed by the general line of the upper profile of the lip 5 (5A and in particular 5B, 5C) with the horizontal being 3 to 15 ° higher, preferably 5 to 10 °, preferably about 5 °, at the beta angle formed by the profile of the bevel 11 of frame 2 (glazing bead) with the horizontal.

According to the best example of realization, beta = 15 ° and alpha = 20 °.

The choice of these values avoids the risk of detachment of the end exterior of the rigid return 21 with the bevel 11, which would be unsightly and could cause capillary action or, in the event of serious detachment, by ascent under the action of the wind by example.

These angles are shown in Figure 6 attached, which is not the scale.

In Figure 6, we have also shown non-limiting options cited above, such as the thin adhesive strip 24 on the back, and the throat 22 guide staples.

FIG. 6 also shows an interior groove 50 of the type general 22, capable of receiving a bead seal 55.

The constituent material of the angle iron 20 with rigid return 21 will be chosen from rigid or semi-rigid plastics such as polypropylene, polyvinyl chloride PVC (less fine material), and analogs, or metal profiles of aluminum, steel stainless, galvanized or not, and the like.

• élastomères
• thermoplastiques
• caoutchouc SBR (styrène-butadiène)
• caoutchouc EPDM
• éventuellement en mousse, de préférence à cellules fermées,
• et matières souples analogues.

The lips 5, 6, 7, 8 will be made of a usual flexible plastic material, that is to say chosen from:

• elastomers
• thermoplastic
• SBR rubber (styrene-butadiene)
• EPDM rubber
• possibly in foam, preferably with closed cells,
• and like flexible materials.

As already mentioned, we can incorporate an anti-elongation glass wire, or other anti-stretching element such as a strip army.

We can also protect the lips 5 against painting with a delaminable skin, either bonded or co-extruded, for example in elastomer co-extruded with lips in another elastomer, this ensuring sufficient adhesion during installation and painting, and nevertheless easy delamination thereafter.

According to a particular, non-limiting embodiment of the invention, the upper face 5 of the hat has a guide for the brush of the painter, or "painting abutment", which consists of a protuberance 70 of rectangular or square section or of similar shape, of dimension and positioning adapted on side 5 to match the sizes standard brushes. We partially represented this variant not mandatory on the right side of figure 4.

The invention also relates to the method of manufacturing such seals which will be chosen in a known manner from the methods of extrusion, bonding, molding, and, most preferably, co-extrusion.

Those skilled in the art know these processes and it is not necessary to describe them.

The invention also relates to the applications of the above seals , the non-limiting list of which has been indicated above, as well as “glazing ” fitted with such seals.

The invention also covers all the embodiments and all the applications that will be directly accessible to those skilled in the art at the reading of this application, of his own knowledge, and possibly simple routine tests.

Claims (23)

Seal for "glazing" 1 intended to cooperate with a "frame" 2, characterized in that it is a seal for glazing, bi-hardness, of the type comprising a rigid vertical part 20 extended at its top and towards I "outside" by a "rigid return" 21 adapted so that its lower face overlaps at least in part, and cooperates in abutment at this overlap, with the upper face 11 bevelled of the frame 2 (glazing bead), the part vertical 20 comprising at least one flexible upper lip 5, preferably at least two flexible upper lips 5, and intermediate 6, pressing against the glass, the upper lip 5 having a "free" part 5A "interior" intended to be applied against the window pane, and an “external” 5B “return” part adapted so that its lower face 35 is applied to (that is to say covers), and cooperates with, the upper face of said rigid return 21. Joint according to claim 1 characterized in that the part 5B comprises a part 5C which projects outwards beyond the external edge of the rigid return 21. Joint according to claim 1 or 2, characterized in that it comprises said upper flexible lip 5 with return 5B, and possibly 5C, and an intermediate flexible lip (that is to say located under the upper lip 5) 6. Joint according to any one of Claims 1 to 3, characterized in that it also comprises a lower lip 8 oriented upwards like the lips 5 and 6. Joint according to any one of Claims 1 to 3, characterized in that it comprises two intermediate flexible lips 6, 7 oriented like the lip 5, or in the shape of a "V", one (6) oriented upwards, l 'other (7) down. Joint according to any one of Claims 1 to 3, characterized in that it comprises a lower lip 8 and / or intermediate (7) oriented downwards. Joint according to any one of Claims 1 to 6, characterized in that it comprises a means for preventing elongation when laid, such as a glass thread, or a reinforced adhesive strip. Joint according to any one of claims 1 to 7 characterized in that the rigid part 20 comprises substantially at mid-height a protuberance or "fir tail" 9 flexible, suitable and intended to cooperate with a corresponding groove or groove formed in the inner face of frame 22. Joint according to any one of Claims 1 to 8, characterized in that the rigid return 21 of the joint is adapted to apply tightly, over all (or substantially all) of its length, against the upper face 11 at a bevel of the frame (pareclose ). Joint according to any one of Claims 1 to 8, characterized in that the rigid return 21 of the joint is adapted so as not to be applied tightly against the upper face 11 at a bevel of the frame, on the contrary leaving a space 30 in the form general "triangle" from its outer point 40 and its junction with the top of the rigid part 20 (which is also the internal or internal end - that is to say towards the window or glazing - of the surface in bevel 11 of the frame). Joint according to any one of claims 1 to 10 characterized in that the internal face of the rigid part 20 comprises, substantially at mid-height, a horizontal groove 22 intended to receive a strip of adhesive 24 preformed, of geometry suitable for allow said adhesive to be applied to the internal or internal face of the frame 2. Joint according to any one of Claims 1 to 10, characterized in that it comprises one or more adhesive strips 24 arranged vertically for application against the frame 2. Joint according to claim 11 characterized in that said fine groove 22 serves as a guide for the installation of staples. Seal according to any one of Claims 1 to 13, characterized in that the lower face 35 of the “return” part 5B, 5C of the lip 5 is bonded to the upper face of the rigid return 21. Joint according to any one of Claims 1 to 14, characterized in that the angle alpha formed by the general line of the upper profile of the lip 5 (5A and in particular 5B, 5C) with the horizontal is greater than 3 to 15 ° , preferably 5 to 10 °, preferably approximately 5 °, at the beta angle formed by the profile of the bevel 11 of the frame 2 (pareclose) with the horizontal. Joint according to claim 15 characterized in that :
beta = 15 ° and alpha = 20 °. Joint according to any one of Claims 1 to 16, characterized in that the constituent material of the angle iron or rigid vertical part 20 with rigid return 21 will be chosen from rigid or semi-rigid plastics such as polypropylene, polyvinyl chloride PVC ( less fine material), or metal profiles in aluminum, stainless steel, galvanized or not. Joint according to any one of Claims 1 to 17, characterized in that the lips 5, 6, 7, 8 will be made of a flexible plastic material chosen from: elastomers thermoplastic SBR rubber (styrene-butadiene) EPDM rubber possibly in foam, preferably with closed cells. Joint according to any one of Claims 1 to 18, characterized in that the lips 5, 5A, 5B, possibly 5C, are protected against the paint by a delaminable skin, either glued or co-extruded, for example in co-elastomer. extruded with lips from another elastomer. Joint according to any one of Claims 1 to 19, characterized in that the upper face 5 of the cap comprises a guide for the painter's brush, or "paint stopper", which consists of a protuberance 70 of rectangular or square section, of dimension and positioning adapted on side 5 to correspond to the standard brush sizes. Process for the production of seals according to any one of Claims 1 to 20, characterized in that it is chosen from the extrusion, gluing, molding, and, most preferably, co-extrusion processes . Applications of seals according to any one of the claims 1 to 20 in dry glazing, as a joint between on the one hand a glazing 1 (or a solid, unglazed panel 1) and a wooden support or frame or support 2 or in another material of hardness comparable to wood. "Glazing" characterized in that it is provided with seals according to any one of claims 1 to 20.

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