FR2869257A1 - Automated process for making a projecting tongue to facilitate removal of protective strip on adhesive surface of extrusion uses end of strip on detachable portion of extrusion - Google Patents

Abstract

The process, for use e.g. on self-adhesive sealing extrusions or mouldings used in motor vehicle manufacture where the adhesive surface is covered by a protective strip (10), consists of making the extrusion/ moulding (2) slightly longer than required and cutting partly through it to make a detachable portion (37) on its end that leaves a projecting end (27) of the protective strip when it is removed. The projecting end forms a tongue that can be gripped to pull off the protective strip before the extrusion/moulding is applied to a supporting surface. The adhesive surface on the extrusion/moulding can be a double-sided adhesive strip, a layer of a compact or expanded cellular adhesive, or a bead.

Description

The present invention relates to an automated method of manufacturing a

  gripping tab integrated into a protective film and serving to facilitate the subsequent detachment of the

film.

  The protective film covers the outer adhesive face of a double-sided adhesive tape or a bead or more generally an adhesive mass which extends over an extruded profile or onto an injected part intended for one or the other. for example to be assembled later with possible formation of angle, welding, overmolding or other, in the case of a perimetrical trim or sealing profile.

  It also relates to an extruded profile, or an injected part comprising a strip of double-sided adhesive or an adhesive mass, for example shaped as a cord covered with a protective film provided, to facilitate its detachment, of at least one tongue integrated gripping system, obtained according to the automated method of the invention.

  This invention is particularly suitable for profiled frames intended to cover the periphery of a fixed or movable window, such as for example a windshield, a window or a quarter window, a motor vehicle or other. It can also be applied to glued sections or injected sealing, protection or aesthetic parts for windows, panels, body edges, metal edges or others in the automotive, transport, building or any other field .

  Some profiled or injection molded parts and / or sealing for fixed or moving windows, also called windshields, bezel or other, are secured to the periphery of the glazing by means of a double-sided adhesive tape or an adhesive mass, for example shaped as a cord, or in another form adapted to the particular geometry of the piece.

  These profiles are generally made continuously by extrusion. The double-sided adhesive tape or the adhesive mass shaped, for example, in a bead, is then automatically applied in an extrusion line on the section, an adhesive face thereof or of the latter adhering to the surface to be reported from the profile.

  In order to protect the adhesive until the assembly by gluing of the profile, for example at the periphery of a fixed window, the other side of the double-sided adhesive tape or the adhesive mass bead is conventionally covered with a protective film. As double-sided adhesive is almost always delivered with the protective film already placed on one of its faces, this protective film is on the tape when it is applied to the profile. It is therefore put in place on the extrusion line extrusion line, simultaneously with the double-sided adhesive tape or with a bead of adhesive mass.

  These profiles are then cut to length, then delivered in sections or most often made in frame according to the particularities of the order.

  The frames are formed by assembling several sections of profile of the same or different lengths, joined by junction angle connections, for example by welding or overmolding. The number and length of the profile sections, the joining angles, as well as the overall shape of the frame obtained are appropriately selected according to the application for which the frame is intended.

  To facilitate the removal of the protective film prior to mounting the frame, it is customary to stick or solder tongues gripping on the protective film covering the adhesive. In this way, the user can easily grasp the free end of these tabs and pull perpendicular to the bonding surface to separate the film from the adhesive surface.

  In order to be effective, such a tab must be positioned substantially at the end of the protective film. Indeed, the holding of the film on the strip or on the adhesive bead is often so strong that it is necessary to exert a perpendicular peel force and applied from the end of the film to be peeled off.

  Currently, the gluing of the gripping tabs is a delicate operation, performed manually, it is not easy to automate economically on flexible parts. During this, the operator must stick the grip tab on the end of the protective film, then check that it has adhered to the film.

  Indeed, the adhesion between the double-sided adhesive tape or the bead and the protective film is often greater than that existing between the gripping tab and the film. When pulling on the gripping tongue, it then leads to the sole detachment thereof which separates from the protective film, instead of getting a lifting of the end of the protective film attached to the tongue in order to discover the sticky surface of the strip or bead of adhesive.

  In order to ensure that the gluing of the gripping tab on the protective film is satisfactory, the operator must, after having affixed the tongue 289, test the strength of its adhesion by exerting on it a lifting traction. normally leading to the separation of the end of the protective film.

  If the test is satisfactory, the operator then picks up the peeled end of the protective film and passes the profile to the next step of the manufacturing process. Otherwise, it throws the defective tab, takes a new one and renews the bonding and takeoff operations previously described.

  Because of all these manual steps and their delicate nature, the installation of the gripping tabs on the protective film is a particularly expensive operation compared to the overall cost of the manufacture of the profile.

  However, despite all these precautions, it happens that some parts are subsequently the subject of claims or are returned to the manufacturer because of poor quality gluing of the gripping tongues do not allow to take off satisfactorily the film of protection.

  There is a real need in the industry for an automated and reliable method of attaching a pull tab.

  The object of the invention is to provide a method of manufacturing gripping tabs integrated in the protective film of the adhesive, thereby allowing easy, fast and safe tearing of this film, which can be easily automated and which poses no problem for the subsequent steps of transformation of the profile.

  To solve this technical problem, the invention teaches an automated or easily automatable method of manufacturing a pull tab, used to facilitate the subsequent peeling of a protective film, this film protecting the outer adhesive face of a strip or an adhesive bead or an adhesive mass which extends over an extruded profile, in particular a sealing, protection or aesthetic member, intended to be put in place by bonding on a support, which is characterized in that the gripping tongue is made in one piece with the protective film.

  The gripping tab is no longer bonded to the protective film during an independent laying step as in the prior art, but performed simultaneously with the laying of the adhesive.

  The method preferably comprises the following steps: 15. manufacture of a profile section, whose length is slightly greater than the desired final length, coated with a strip of double-sided adhesive or with an adhesive mass, for example shaped like a cord, the upper face is protected by a protective film; partial cutting of the front face of the section section so as to cause a total or almost total sectioning of the profile section and the band or the bead of adhesive or the adhesive mass, but to leave the protective film intact, dividing the section into two parts: a final portion whose length corresponds to the desired final length and a fall which remain connected by the protective film; 30. possibly tearing off the chute.

  The laying and cutting steps of the adhesive can advantageously take place in the extrusion line, before any assembly steps of the profile by overmoulding, welding or otherwise. But the laying and cutting of the adhesive can also be done offline for example on the injected parts or in the case of small quantities not justifying an investment of automation online. They are particularly simple and can be performed continuously, the person skilled in the art can easily design their automation using devices available in the industry.

  The gripping tongue resulting from this process allows a quick and effortless tearing of the protective film. The tongue, being an integral part of the protective film, can not be detached independently of the latter. It can therefore perform its function reliably and no longer causes any quality problem.

  The solution according to the invention is particularly advantageous because it eliminates the high cost of manual installation. The economy is substantial because each section of a frame has one or two tongues gripping.

  The invention also relates to a section or section of profile or an injected part provided with a double-sided adhesive tape or an adhesive mass, for example shaped like a cord and coated with a protective film which is characterized in that the protective film comprises at least one gripping tab made in one piece with it and according to the method previously described.

  This gripping tongue is preferably located at the end of the profile section, but may also be at the level of a punching made in the length of the profile.

  The present description also relates to a frame provided with a protective film and at least one gripping tongue of this type.

  Other characteristics and advantages of the invention will appear on reading the detailed description which follows, a description given with reference to the appended drawings, in which: FIG. 1 is a schematic cross-sectional view of an example of profile according to the invention; Figure 2 is a schematic cross-sectional view of an example of application of a profile according to the invention to a fixed automobile window; Figure 3 is a perspective view of the rear of a profile section comprising a protective film provided with a gripping tab according to the prior art; Figure 4 is a perspective view of the front of a profile section obtained after the first step of the method according to the invention; 15. Figure 5 is a perspective view of the rear section section of Figure 4; Figure 6 is a perspective view of the front of a profile section comprising a protective film provided with a gripping tongue according to the invention; Figure 7 is a perspective view of the rear section section of Figure 6; Figure 8 is a perspective view of the rear of a profile section comprising a protective film provided with a gripping tongue according to the invention, the protective film being partially detached; Figure 9 is a schematic view of the rear of a portion of a frame whose visible angle is formed by overmolding angle of two section sections according to the invention; Figure 10 is a schematic view of the front of a profile section according to the invention at a cut allowing a ray taken at a closed angle; Figure 11 is a schematic view of the rear section section of Figure 10; FIG. 12 is a schematic view of the front of a profile section according to the invention at the level of a cut-out allowing a radius tap at an open angle; Figure 13 is a schematic view of the rear of the profile section of Figure 12; FIG. 14 is a diagram of an automated line for manufacturing profiles lined with a double-sided tape or double-sided adhesive bead or strip, implementing the method of manufacturing integrated tabs according to FIG. invention.

  The profile and the method according to the present invention will now be described in detail with reference to Figures 1 to 14. The equivalent elements shown in the different figures will bear the same reference numerals.

  By convention in this application, the front face of the profile or the frame will be referred to as the face of the profile or of the frame intended to be visible once the profile or the frame has been put in place on the glazing unit and by the rear face of the profile or frame, the face of the profile or the frame comprising the adhesive band strip or the adhesive mass bead, that is to say the face intended to be hidden once the profile or the frame placed on the glazing.

  In the various figures, there is shown a profile 1 forming a windshield seal and constituting an example of preferential application of the invention. It should be understood, however, that these figures and the detailed description thereof are in no way limiting to the scope of the invention defined by the

claims.

  This section 1 may, for example, comprise a sole 2, preferably rigid or semi-rigid or even flexible, serving as a base for fixing the establishment of the profile. This sole 2 extends longitudinally and has a shape section for example substantially rectangular.

  This sole 2 may be extended by a technical conformation for example in the form of a flexible lip 3 masking or sealing, which also extends longitudinally and laterally borders the sole 2 on which it originates.

  In order to be reported by gluing for use, the profile 1 comprises a layer or mass of adhesive material 4 compact or expanded or non-expanded cellular preferentially in the form of a strip or a cord 5 of adhesive for example double-sided adhesive which extends longitudinally on the rear face 6 of the sole 2 of each section 7 profile 1.

  This strip or cord 5 and more generally this mass of adhesive material preferably double-sided adhesive has a front face 8 attached to and secured to the rear face 6 of the sole 2, preferably just after the extrusion of the profile 1, and a free rear face 9 protected by a protective film 10.

  The film 10 protects the free face 9 of the adhesive 4 until the section 1 must be mounted by gluing in the use position.

  Of course, one can imagine a complete profile that is to say comprising the adhesive mass from manufacture by injection extrusion or any other method.

  The section 7 formed from the section 1 according to the invention can be delivered and used as such, that is to say in the form of an independent linear element to report by gluing on a suitable support. Depending on the application, it may be used alone or associated with one or more other identical or different sections of profile.

  Most often, several of these sections 7, identical or different, are assembled to each other and joined together in a perimeter frame 11, for example intended to surround a fixed or movable window. Such a frame has been partially shown in FIG. 9.

  Conventionally, sections 7 of profile 1 are joined in pairs at their adjacent ends 12, by an angle connection 13 made in the form of an overmoulding 14.

  The joining of these sections 7 can also be achieved by welding their adjacent ends 12 after beveling at an angle generally close to 45 or at any other angle thereof, or by any other appropriate means.

  FIG. 2 shows an example of preferential application of a segment 7 of profiled section 1 according to the invention, for the production of a framework 11 for perimeter dressing of a windshield 15.

  Conventionally, a windshield 15 is placed on an opening 16 formed in the bodywork 17 of the vehicle. The windshield 15 is generally fixed by gluing, by means of a bead of glue 18, to a fold 19 of the sheet of the bodywork 17 bordering the opening to be closed.

  Due to manufacturing tolerances, there is a gap 20 between the edge 21 of the window and the shoulder 22 initiating the fold 19 of the bodywork.

  In order to mask this gap 20, visible and unsightly, the windshield 15 is equipped with the trim frame 11 formed of sections 7 of profile 1 according to the invention, which borders for example on three of its sides.

  As can be seen in the section of FIG. 2, the longitudinal flange 2 of the section 1 is intended to relate to the edge of the glazing 15.

  The profile 1 is secured to the glazing 15 by means of the band or the bead 5 of adhesive or the double-sided adhesive mass, one of the faces 9 adheres to the glazing 15 and the other face 8 adheres to the face back of the sole 2.

  The sole 2 extends towards the body by a technical conformation for example in the form of the flexible masking lip 3, the free end is provided to rest on the body panel 17, thus masking the existing unsightly gap 20 between the windshield 15 and the bodywork.

  It should be understood that the invention is not limited to the trim profiles for fixed or moving windows of a motor vehicle, but may relate to any other profile with double-sided adhesive strip or cord or in the form of a compact or expanded adhesive mass provided (e) a protective film for example intended (e) to equip a window, a panel, a flange or other in any field. As an example in another technical field, seal profiles for shower enclosures can be mentioned.

  More generally, the invention relates to any extruded or injected element to report against a support, element comprising a double-sided adhesive or an adhesive mass on which or on which extends a protective film, which must be removed before gluing by means of a gripping tab.

  As a result, the profile 1 may have a shape different from that described above and may comprise elements that are more or less than those previously described, for example positioning or abutment ribs, a sealing bead or other, the characteristics of the profile being chosen appropriately according to the intended application.

  In order to facilitate the subsequent removal of the film 10 for the adhesive application of the profile 1, each protective film 10 of the strip of the cord or the adhesive mass conventionally comprises at least one gripping tongue 23.

  For purposes of comparison, FIG. 3 shows the example of a gripping tongue according to the prior art 24.

  This traditional tongue 24 comprises a portion 25 attached to the protective film 10, which is attached to and secured to the film 10 for example by gluing, welding or any other suitable means.

  The tongue 24 also comprises a free end 26 through which the user can grasp the tongue 24 and exert traction in order to take off the protective film 10.

  According to the prior art, the gripping tabs 24 are reported longitudinally, at least at one end or transversely near one end of each strip, double-sided adhesive tape or adhesive mass and therefore of each section 7 section 1, during a manual step independent and subsequent to the installation of the protective film 10.

  The present invention provides a gripping tab 27 which is not reported subsequent to the application of the protective film 10 and independently thereto. On the contrary and according to an essential characteristic of the invention, the gripping tongue according to the invention 27 is made in one piece with the protective film 10.

  FIG. 14 schematically illustrates a preferred example of an automated line for manufacturing sections 7 of profile 1 according to the invention, which implements the method of manufacturing gripping tabs 27 according to the invention.

  During a first step 28, a continuous length 29 of profile 1 is extruded by means of a conventional extrusion installation 30, so as to have appropriate characteristics according to its final application.

  During a second step 31, a strip of double-sided adhesive or an adhesive mass, for example formed as a bead, coated on its upper face 9 with a protective film 10, is applied continuously to the rear face 6, in other words, the face to be reported, of the profile 29.

  For this, for example, a coil 32 of double-sided adhesive in any linear form coated with a protective film 10 is disposed after the exit of the die of the extruder 30. The coil 32 is unwound simultaneously with the scrolling of the extruded section 29 and the strip, unwound from this coil is applied continuously on the surface of the section on which it is sticking.

  Another way of proceeding, not shown here, is to directly extrude an adhesive, compact or cellular adhesive bead over the continuous length 29 of the section 1 and then to cover it with a protective film unwound from a coil simultaneously with the scrolling extruded profile 29.

  The good contacting of the strip of adhesive bead or more generally of the adhesive mass with the profile, as well as the achievement of a sufficient pressure force to allow satisfactory adhesion to the profile are performed by known means of those skilled in the art, not shown and which will not be described in more detail in this description.

  The step 31 of laying the double-sided adhesive 5 or more generally of the adhesive mass 4 and its protective film 10 can obviously be carried out in any other imaginable way. It is also conceivable to perform a technical coextrusion, simultaneous or not with that of the section 29, the adhesive material 4 and / or the protective film 10.

  Then, the section 29 passes into a cutting station 33, where the continuous length 29 of the profile is fed into sections 7 of section 1 of length slightly greater than the desired final length.

  Simultaneously, a partial cut 34 of the front face of the profile is made near the end 12 of the section. This cutout 34 must be made accurately so as to cause a total or almost total transverse sectioning of the section section 7 1 and the strip, cord or mass of adhesive 5, but to leave the protective film 10 intact .

  The segment 7 of profile 1 is thus divided into two parts, a final portion 36 whose length corresponds to the desired final length and a drop 37 of shorter length, which remain connected by the protective film 10.

  The partial cutout 34 must be particularly precise so as not to penetrate the protective film 10. In fact, a cut that is too deep could generate a fracture initiation which would cause the involuntary tearing of the gripping tongue 27 during the peeling force of the peel. the protective film 10.

  This operation is however perfectly feasible from a technical and industrial point of view, since a slight tolerance to cutting is acceptable at the strip, cord or mass of adhesive 5. In fact, this strip or cord is generally formed from a foam material of the foam type of adhesive material, most often an acrylic foam, which even if it is not completely cut disintegrates under the effort and therefore does not oppose the next step of the process. To further improve this operation, it may be envisaged to cool the cutting guide of the double-sided adhesive. This has the effect of hardening the adhesive and thus to improve the precision of the cut.

  The segment 7 of section 1, partially sectioned, finally arrives at a tear-off station of the chute 38, in which the chute 37 is separated from the final portion 36 of the profile and separated from the protective film 10. To further improve this operation, it may be envisaged to cool the chute 37 by appropriate means. This has the effect of reducing the adhesion of the adhesive on the protective film and thus to promote the detachment of the fall 37.

  At the exit of this station 38, there is obtained a final portion 36 of profile 1 of length corresponding to the desired final length, coated with a strip, a bead or a mass of adhesive 5, itself protected by a protective film 10.

  However, this protective film 10 protrudes from the profile portion 36 and extends longitudinally beyond the end 12 thereof. This projecting end 39 of the protective film forms a grasping tip to facilitate peeling of the protective film 10 and thus constitutes an integral gripping tab 27 according to the present invention.

  This post 38 however remains optional because it can very well be envisaged to deliver the product with the remaining drop 37 glued to the protective film to be ripped later at the same time as the protective film. In addition, the extra thickness of the fall is favorable to the capture of the protective film.

  The final portions 36 of profiles 1 obtained can then be sent to the packaging or to subsequent steps of assembling, making or shaping, such as, for example, overmolding or welding steps.

  FIG. 14 shows the partial cutout of the profile giving rise to the gripping tongue 27 at the cutting station 33, that is to say, as occurring simultaneously with the cutting of the continuous section 29 into sections 7 of FIG. profile. It can of course be envisaged that this partial cutting takes place within an independent cutting station, placed after the cutting station 33 for individualizing the sections 7.

  FIGS. 4 to 8 illustrate an example of section of profile that can be obtained by the automated method according to the invention.

  FIGS. 4 and 5 show section 7 of profile 1 obtained at the end of cutting station 33, ie after the step of individualizing section 7 of profiled section 1 of longer length. to the desired final length and partial cutting 34 of the front face of this section 7, these two operations being performed simultaneously or successively.

  As previously mentioned, the section section 7 comprises at this stage two parts, a final portion 36 whose length corresponds to the desired final length and a drop 37 of shorter length, which remain connected by the protective film 10 left intact.

  The final profile section obtained at the end of the automated process according to the invention, that is to say 2869257 17 at the exit of the tearing station of the chute 38, has been represented in FIGS. has the desired final length and comprises an adhesive strip or bead 5 protected by a protective film 10 which protrudes beyond the end 12 of the profile.

  In these figures, the chute 37 which has been separated from the final portion 36 of section at the tearing station of the chute 38, has been shown near it. Depending on the thickness and the nature of the profile and according to the agreement of the user, it may very well be envisaged to deliver it with the drop 37 remaining stuck to the protective film, the latter being torn off later at the same time. time as the protective film. In addition, the extra thickness of the fall is favorable to the capture of the protective film.

  The projecting end 39 of the protective film 10 forms the integrated gripping tab 27 according to the present invention. During mounting of the profile, it can be grasped by the operator who can thus, by a simple traction force, easily peel off the protective film 10, as shown in Figure 8, without risk of tearing or detachment of the gripping tongue 27.

  According to another conceivable variant, the chute 37 may, once cut, be left glued to the protective film 10. It thus remains integral with the protruding end 39 of the protective film 10 forming the integrated gripping tongue 27 according to the present invention. When mounting the profile on its support, the operator simultaneously grasps the drop 37 and the gripping tongue 27 to peel off the protective film 10. This does not cause any difficulty or additional problem to the assembly and allows the manufacture of save the item 38 corresponding to the tearing step of the fall.

  However, such a variant can be considered only for the gripping tongues 27 each located on an end 12 of the section intended to remain free. Indeed, the presence of the chute 37 could be inconvenient if this end 12 were to be used thereafter to make a corner connection 13.

  As illustrated in FIG. 9, the invention makes it possible without difficulty to make corner connections 13 so as to be able to join several profiles according to the invention, for example to form a frame 11.

  The presence of the gripping tabs 27 protruding from the ends 12 of the sections 7 of section to be joined does not preclude the realization of such a connection. Indeed, it suffices to fold each of these tongues 27 on the end of the protective film 10 still glued on the respective profile section, before welding or overmolding the ends 12 of these sections 7.

  The extra thickness caused by this folding is very small because the thickness of the protective film 10 is minimal. It is much less important than in the case of a conventional gripping tongue 24 with which the thickness formed would comprise three thicknesses: that of the protective film 10, plus that of the connecting portion 25 and that of the free end 26 This slight oversize therefore does not represent a problem for making the frame that can be operated in a conventional manner.

  The previously described examples relate to simple sections of extruded profiles on which the gripping tongue is made at the end of this section. However, the manufacturing method of integrated tongues according to the invention can also be applied to sections of more complex sections.

  It can in particular be used when the profile has other cutouts to allow a ray grip. Such examples of section sections have been shown in FIGS. 10 to 13.

  FIGS. 12 and 13 relate to cases for which it is desired to take a radius taken at an open angle, symbolized by the arrows 40.

  For this, one can achieve for example a punching 41, substantially triangular and approximately in the center of the profile at the desired level of the ray grip. A straight cut 42 of the profile, preferably transverse thereto, is also made and extends from the edge of the profile to the middle of the triangular punching base 41. It is thus possible to bend the profile at this level in the direction of the arrows 40.

  In this case, the gripping tongue 27 is made as previously at the end 12 of the profile section by the method according to the invention.

  The straight cut-out 42, like the cut-out 34, must be partial so as to cut off the profile and the band or cord or mass of adhesive material, but to preserve the protective film 10.

  Thanks to this intact protective film, the profile section 7 is kept rectilinear until it is laid. At this time, the operator takes off the protective film 10 by means of the end grip tab 27. It then releases the partial straight cutout 42 and can bend the profile section.

  Figures 10 and 11 relate on the contrary to cases for which it is sought to achieve a radius taken at a closed angle, 2869257 20 symbolized by the arrows 43.

  For this, one can realize as previously punching 44, substantially triangular and approximately at the center of the profile at the desired level of the ray grip, and a straight cut 45 of the profile, preferably transverse thereto and extending from the edge of the profile to the middle of the triangular punching base 44.

  The right cut 45 is this time total, so as to cut the profile, the band, the cord or the mass of adhesive material and its protective film 10.

  This total cutout 45 is completed by two partial oblique cuts 46 preserving the protective film 10 and extending in the extension of the triangular punching 44 sides.

  Two falls 48 of substantially trapezoidal shape are thus obtained, delimited on the one hand by the straight and total cutout 45 and on the other hand by the partial and oblique cutouts 46 and attached to the section section 7 by the protective film 10.

  In accordance with the method according to the invention, it suffices to tear off the falls 48 to obtain two gripping tabs made integrally with the protective film 10 and protruding from the profile at the triangular cut in the length of the profile. During assembly of the profile, the operator has only to pull these tabs, and possibly on the falls 48 still linked to the tabs, to take off without difficulty the protective film on both sides of the triangular cut. It can then bend the profile in the direction of the arrows 43.

  It should be understood that the invention is not limited to the method, profile, frame and tongues as described above and 2869257 shown in the figures. It also extends to all variants imaginable by those skilled in the art within the scope of the claims.

  Numerous variants are conceivable, particularly for example as to the shape, the material, the dimensions, the construction, the arrangement of the profile, the adhesive material or the protective film.

  For example, the profile 1 is preferably made from a thermoplastic elastomer. It can nevertheless be envisaged to make it out of rubber or any other suitable material.

  Similarly, the adhesive material 4 can be deposited online as shown or offline, in recovery. The tape or bead of adhesive 5 and more generally the adhesive material coated with its protective film 10 may extend over the entire length of the profile or be limited to one or more particular areas thereof.

  In the same way, the steps of partial cutting 34 and possibly tearing of the fall 37 giving rise to the gripping tongue 27 according to the invention can take place online following the extrusion of the profile, or offline , in recovery on a small specific machine.

Claims (18)

  An automated method for producing a gripping tab (27) for facilitating the subsequent peeling of a protective film (10), said film (10) protecting the outer adhesive face (9) of a strip, a bead of adhesive (5) or of an adhesive material which extends over an extruded (1) or injected profile, in particular a sealing, protection or aesthetic section, intended to be put in place by gluing on a support (15), characterized in that the gripping tab (27) is made in one piece with the protective film (10).   2. Automated method for manufacturing a gripping tab (27) according to claim 1 characterized in that it comprises the following simultaneous or successive steps: manufacture of a profile section (7), of length slightly greater than the desired final length, coated with a double-sided tape (5) or with a compact or expanded cellular or non-cellular adhesive mass, for example shaped like a cord whose upper face (9) is protected by a protective film (10); partial cutting (34) of the front face of the profile section (7) so as to cause a total or almost total sectioning (35) of the section section (7) (1) and the band or the bead of adhesive (5) or the compact or expanded adhesive mass, but leave the protective film (10) intact, thus dividing the section (7) into two parts: a final portion (36) whose length corresponds to the desired final length and a chute (37) which remain connected by the protective film (10).   3. Automated method of manufacturing a gripping tab (27) according to the preceding claim characterized in that one carries out tearing of the chute (37).   4. Automated method of manufacturing a gripping tab (27) according to claim 2 or 3 characterized in that the manufacture of a profile section (7), of length slightly greater than the desired final length comprises the following steps Extrusion of a continuous length (29) of profile (1); placing, on the rear face (6) of the profile (29), a strip or a continuous bead of double-sided adhesive (5) or an adhesive mass and simultaneously or successively a protective film ( 10) on the upper face (9) of the tape or bead of adhesive (5) or the adhesive mass; cutting into sections (7) of section (1) of length slightly greater than the desired final length.   5. Automated method of manufacturing a gripping tab (27) according to claim 2 or 3 characterized in that the manufacture of a profile section (7), of length slightly greater than the desired final length comprises the following steps extrusion of a continuous length (29) of profile (1); simultaneous or deferred coextrusion of a continuous strip of double-sided adhesive (5) or of a compact or expanded adhesive mass, for example shaped as a bead and laying or possibly simultaneous or delayed extrusion of a protective film 10, cutting of the continuous length (29) of section in sections (7) of length slightly greater than the desired final length.   6. Automated method for manufacturing a gripping tab (27) according to any one of claims 2 to 5 characterized in that the partial cutting step (34) and optionally the tearing step of the fall ( 37) take place in extrusion line.   7. Automated method for manufacturing a gripping tab (27) according to any one of claims 2 to 5 characterized in that the partial cutting step (34) and / or the possible tearing step of the fall (37) take place in recovery, offline extrusion.   8. Automated method of manufacturing a gripping tab (27) according to any one of claims 2 to 7 characterized in that the chill (37) is cooled before tearing thereof.   9. Automated line for manufacturing extruded or injected section sections (1), in particular for sealing, protection or aesthetics, intended to be placed by gluing on a support (15) and provided for this purpose with a band, a bead of adhesive (5) or an adhesive material whose outer adhesive face (9) is protected by a protective film (10) provided with a gripping tab (27) serving to facilitate the subsequent detachment of this film (10), characterized in that it comprises automated stations implementing the various steps of the method of manufacturing gripping tabs (27) according to any one of the preceding claims.   10. Extruded section (1), comprising a band or a bead of adhesive (5) or more generally an adhesive mass covered with a protective film (10) provided, to facilitate its separation, at least one tab of gripping (27) characterized in that it is obtained by the automated method according to any one of claims 1 to 8.   11. Extruded profile (1), including sealing, protection or aesthetics, and intended to be put in place by gluing on a support (15), comprising a strip or more generally an adhesive mass, for example shaped as a bead (5) covered with a protective film (10) provided, to facilitate its detachment, of at least one gripping tab (27) characterized in that the gripping tab (27) is an integral part of the protective film {10).   12. Extruded profile (1) according to the preceding claim characterized in that the protective film (10) extends longitudinally beyond the end (12) of the profile (1), its projecting end (39) forming the integrated gripping tab (27).   13. Profile according to claim 11 characterized in that the gripping tab forming an integral part of the protective film (10) is located at a punch in the length of the profile.   14. Profile according to any one of claims 10 to 13 characterized in that it further has at least one additional cutout (42, 45, 46) for a ray catch.   15. Profile according to any one of claims 10 to 14 characterized in that it comprises a longitudinal flange (2) rigid or semi-rigid, serving as a fixing base for the establishment of the profile on the support (15) , and a functional portion comprising for example a flexible masking lip (3) laterally bordering the sole (2).   16. Profile according to any one of claims 10 to 15 characterized in that it is manufactured by injection.   17. Profile according to any one of claims 10 to 16 characterized in that it is a trim seal for fixed or mobile automobile window.   18. Frame intended to be put into place by gluing on a support and formed by assembling several sections of profile (7) joined by junction angle connectors, characterized in that at least one of these section sections ( 7) is a profile according to any one of claims 10 to 17.