Roll of masking film for paint booths and the like, kit comprising said roll, booth comprising a plurality of such kits

Abstract

Roll of masking film for paint booths and the like, kit comprising said roll, booth comprising a plurality of such kits The present invention relates to a roll (10) of masking film for paint booths and the like, comprising an electrostatic film (6) wound to form said roll (10) around a winding axis X, wherein said film (6), in wound configuration, has a length L in the direction of said axis X where L≤200 cm. Figure to be published with the abstract: Figure 7

Description

Title of the invention: Roll of masking film for paint booths and the like, kit comprising said roll, booth comprising a plurality of these kits

[0001] The present invention relates to a roll of masking film for paint booths and the like, a kit comprising said roll, and a booth comprising a plurality of such kits. The invention is particularly intended for automotive paint booths; however, other uses are not excluded when the walls of a booth must be protected against contact with certain substances. STATE OF THE ART

[0002] In the field of automotive paint booths, such as those of paint ovens, it is common to use a masking film to cover the walls of the booth and thus protect them from the paint. The film is generally made of an electrostatic material, that is to say capable of adhering to the walls of the booth.

[0003] In the known technique, the film is supplied in rolls, where it is folded on itself several times with folding lines orthogonal to the axis of the roll, as can be seen in [Fig.l].

[0004] This roll is not practical to use and therefore, at least two people are required to apply it. In fact, in the first phase, one person unrolls the roll horizontally and the other holds the film. Then, it must be applied evenly to the walls. This means that both operators must coordinate to fix the upper edge of the film to the walls of the cabin with adhesive tape.

[0005] The film also has to be unfolded and, as it is folded several times on itself, it inevitably ends up in a disordered state due to the electrostatic effect of the layers on each other.

[0006] Both people will therefore need to have a lot of time and patience to protect the cabin walls, in accordance with the rules and uniformly, as illustrated in [Fig.2].

[0007] Other disadvantages of the prior art are that it is not possible to replace only part of the masking of the cabin wall. In fact, the entire film must be replaced. This makes the system that is the subject of the prior art impractical and quite expensive.

[0008] The aim of the present invention is to partially overcome the problems of the known technique.

[0009] One of the primary objectives of the present invention is to make it more practical and faster to apply an electrostatic masking film to the walls of a cabin.

[0010] Another object of the present invention is to allow a single person to easily mask the walls of a cabin.

[0011] Another objective of the present invention is to allow one or more parts of the masking of a booth to be easily replaced, as required.

[0012] Another object of the present invention is to provide an easy-to-produce cabin masking system.

[0013] Another object of the present invention is to provide an economical cabin masking system.

[0014] GENERAL INTRODUCTION

[0015] The technical problems are solved by a roll of masking film for a booth, by a kit comprising said roll, and by a booth comprising a plurality of these kits.

[0016] The present invention relates to a roll of masking film for paint booths and the like, comprising an electrostatic film wound to form the roll around a winding axis X, wherein said film, in wound configuration, has a length L in the direction of said axis X where L<200 cm.

[0017] Advantageously, L belongs to one of the following intervals: [25-50] cm, [75-100] cm, [125-150] cm, [175-200] cm.

[0018] Advantageously, L belongs to one of the following intervals:

[0019] - [40-50[ cm ;

[0020] -[90-100[cm;

[0021] - [140-150[ cm ;

[0022] - [190-200[ cm.

[0023] Advantageously, the film, in the rolled-up configuration, has at least one edge perpendicular to the X axis folded to form a wing, so that when the film is in an unrolled configuration and the wing is unfolded, the film has a length Lmax in the direction parallel to the X axis greater than L.

[0024] Advantageously, the roller has the two edges perpendicular to the X axis folded to form a wing.

[0025] Advantageously, the wings in the folded configuration are spaced in the direction of the X axis.

[0026] Advantageously, the wings have a length H in the direction parallel to the X axis which is less than the length L of the wound film.

[0027] Advantageously, H belongs to one of the following intervals:

[0028] [1-20] cm;

[0029] [1-15] cm;

[0030] [1-10] cm.

[0031] Advantageously, the roll is a ribbon with constant L.

[0032] Advantageously, said ribbon has constant Lmax.

[0033] Advantageously, the ribbon has at least one wing with constant H.

[0034] Advantageously, the roll, in the wound configuration, has a main face inner, oriented towards the X axis, and an outer main face, opposite the inner main face, the wings, in the rolled configuration, being folded so as to rest on the inner main face.

[0035] The present invention also relates to a kit comprising:

[0036] - a roller as described above;

[0037] - a housing box for said roller configured to support it in a operational configuration of the process.

[0038] Advantageously, the box comprises means for application to a paint booth wall or is integrated into the wall of a booth.

[0039] Advantageously, the roller is able to be freely inserted and removed from the box for replacement, and it is rotatable when unrolling around the horizontal X axis.

[0040] Advantageously, the box comprises an exit opening, configured to allow the film to exit as it is unwound from the roll.

[0041] Advantageously, said outlet opening is a horizontal notch.

[0042] Advantageously, the kit comprises a slowing device in order to slow down the unrolling the roll.

[0043] Advantageously, the slowing device comprises a friction element, movably fixed to the box, and pushing elements making it possible to push the friction element towards the roller.

[0044] Advantageously, the thrust elements are elastic means interposed between the friction element and the box.

[0045] Advantageously, to facilitate the replacement of the roller, the housing comprises a lifting or removable cover.

[0046] Advantageously, the cover is configured to rotate around an axis XI parallel to the axis X of the roller when the latter is in operational position in the housing.

[0047] Advantageously, the axis of rotation XI of the cover is defined by one or more hinges.

[0048] Advantageously, the roll, the box and in general the kit have a length R in the direction of the unwinding axis X less than Lmax; preferably, this length R is close to a limit equal to half a meter or its multiples, and it is less than this limit.

[0049] The present invention also relates to a cabin comprising a room delimited at least by a series of adjacent vertical walls, where on at least some of the walls there is a series of kits as described above.

[0050] Advantageously, the kits are positioned so as to maintain the rollers with the X axis horizontal and parallel to the wall on which the kit is placed.

[0051] Advantageously, the kits are arranged in succession between them at regular distances in the horizontal direction.

[0052] Advantageously, the length R of a kit added to its distance D from one of the adjacent kits is equal to 50, 100, 150, 200 cm.

[0053] Advantageously, the cabin comprises rollers of different sizes.

[0054] Advantageously, the sizes differ from each other at least by the length L of the film, measured in the direction of the winding axis X of the corresponding roll, when the film is in the wound configuration to form said roll.

[0055] Advantageously, the booth is a paint booth. DETAILED DESCRIPTION

[0056] Other features and advantages of the present invention will become more apparent in the following detailed description of its preferred embodiments, made with reference to the attached drawings and given for informational and non-limiting purposes. In these drawings:

[0057] - [Fig.l] schematically illustrates the known technique;

[0058] - [Fig.2] also schematically illustrates the known technique;

[0059] - [Fig.3] schematically illustrates a paint booth on the walls of to which is fixed a series of kits according to the present invention, where the rolls are oriented in the direction of unwinding downwards; the figure shows the films of the different rolls with the wings folded;

[0060] - [Fig.4] is like [Fig.3], where the films of the different rolls are cut and their wings are unfolded to overlap those of adjacent films;

[0061] - [Fig.5] shows one of the kits in the configuration of [Fig.3];

[0062] - [Fig.6] shows one of the kits in the configuration of [Fig.4];

[0063] - [Fig.7] shows a roll of electrostatic film according to the present invention compatible with the kit of previous figures;

[0064] - [Fig.8] shows one of the kits in the configuration of [Fig.5];

[0065] - [Fig.9] shows another form of implementation of film rolls electrostatic according to the present invention, compatible with the kit of the preceding figures;

[0066] - [Fig. 10] shows another form of implementation of film rolls electrostatic according to the present invention, compatible with the kit of the preceding figures.

[0067] With reference to [Fig.3] and [Fig.4], a paint booth according to the present invention is illustrated as a whole under the reference number 1.

[0068] The cabin 1 comprises a room 2 delimited by at least one series of adjacent vertical walls 3.

[0069] On at least some of the walls 3 there are a series of kits according to the present invention, each kit being indicated as a whole by the reference numeral 5.

[0070] With reference to [Fig.5], [Fig.6] and [Fig.8], each kit 5 comprises a roll of electrostatic film 6 according to the present invention, each roll being indicated as a whole by the reference numeral 10.

[0071] Each roll 10 is contained in operational position in a box 15 of the respective kit, in which it has a horizontal X axis of winding and unwinding parallel to the wall 3 on which the kit 5 is placed.

[0072] The roller 10 can be freely inserted and removed from the box 15 for replacement, and is rotatable when unwinding around the horizontal X-axis.

[0073] Said box 15 comprises an exit opening 16, for example a horizontal notch, configured to allow the film 6 to exit when it is unwound from the roll 10.

[0074] Preferably, the kit comprises a slowing device 20 for slowing down the unwinding of the roll 10, in order to avoid accidental unwinding, for example. Preferably, the slowing device comprises a friction element 21, movably fixed to the housing 15, and pushing elements 22 for pushing the friction element towards the roll 10, preferably perpendicular to the axis of rotation X. For example, the pushing elements are elastic elements, such as a spring interposed between the friction element 21 and the housing 15.

[0075] To facilitate the replacement of the roller 10, the housing 15 preferably comprises a liftable or removable cover 16. For example, the cover 16 rotates about an axis XI parallel to the axis X of the roller 10 when the latter is in the operational position in the housing 15.

[0076] The axis of rotation of the cover 16 is for example defined by one or more hinges 17.

[0077] With reference to [Fig.7], the film 6 is a ribbon wound to form the roll 10.

[0078] The film 6, in the configuration wound in the roll (10), has a length L according to the direction of the X axis less than or equal to 200 cm, i.e. L<200 cm.

[0079] Preferably, different roll sizes are possible.

[0080] For example, L lies in at least one of the following intervals: [25-50] cm, [75-100] cm, [125-150] cm, [175-200] cm.

[0081] Preferably, L belongs to at least one of the following intervals:

[0082] - [40-50[ cm ;

[0083] -[90-100[cm;

[0084] - [140-150[ cm ;

[0085] - [190-200[ cm.

[0086] The boxes 15 have dimensions corresponding to the dimensions of the rolls 10, that is to say they have the appropriate dimensions to accommodate them, for example with regard to their length R, which is R>L and preferably R<(L+10 cm).

[0087] The film 6 is preferably wound in the roll 10 with at least one edge perpendicular to the winding axis X folded to form a wing 30; thus, when it is unfolded, it has a length Lmax greater than the length L in the wound configuration ([Fig.6]).

[0088] [Fig.7] shows the case where the film 6 has two wings 30, one on each edge perpendicular to the X axis.

[0089] In this case, the wings in the folded configuration are preferably spaced in the direction of the X axis, that is to say they do not overlap, in order to facilitate their unfolding.

[0090] The wings 30 have a length H in the direction parallel to the X axis which is less than the length L of the wound film. For example, H is preferably between [1-20] cm, preferably between [1-15], and even better between [1-10] cm.

[0091] Preferably, the film 6 is a ribbon with constant L. Preferably, said ribbon has constant Lmax, that is to say that it is generally rectangular in shape. Preferably, said ribbon has wings with constant H.

[0092] Preferably, the film 6, when wound, has an inner main face 7, oriented towards the X axis, and an outer main face 8, opposite the first.

[0093] The wings 30, in the rolled-up configuration, are preferably folded so as to rest on the inner face.

[0094] In the kit 5, the rollers 10 are housed in such a way that, during unwinding, the outer face 8 is oriented towards the wall 3; in this way, it is easier and more practical to unfold the wings 30.

[0095] As shown in [Fig.3] and [Fig.4], in use, the boxes 15 are fixed to the walls 3 of the cabin 1, one next to the other, preferably at the same height, at a distance which allows the wings 30 to overlap when they are unfolded.

[0096] The film 6 is unwound by pulling it downwards, then cut along a cutting line T.

[0097] In this configuration, the film adheres to the walls 3 because it is electrostatic.

[0098] The distance between one film and the other is compensated by the deployment of the wings 30 which overlap at least partially.

[0099] Since the walls of the cabins are generally of a length equal to a multiple of one meter or half a meter, thanks to the intended dimensions of the rolled film, it is possible to configure the rolls 10 and position them along the walls 3 so as to cover the latter, generating a uniform masking. [Fig.3] shows the example where the kits are arranged one after the other in a horizontal direction. The length R of a kit added to its distance D from one of the adjacent kits 5, for example, is equal to 50, 100, 150, 200 cm.

[0100] In the example illustrated, the rollers 10, and therefore the corresponding boxes, are all of the same size, but it is not excluded to apply in the same cabin rollers 10, and their respective boxes 15, of different sizes.

[0101] Finally, if one wishes to replace only part of the masking, it is sufficient to renew the film 6 corresponding to one or more of the kits 5.

[0102] [Fig.9] and [Fig. 10] show two variants of rollers, designated 110 and 210, where only the wings 30 differ from the roller 10. In particular, the roller 110 has only one wing 30, while the roller 210 has no wings.

[0103] In both cases, the length L of the film in the wound configuration meets the conditions set out above with regard to the length L.

[0104] Thus, said rollers are both compatible with the boxes 15 and more generally with the kits 5, and can also be used as spare parts.

[0105] It will be noted that the boxes 15 preferably comprise application means 40 on the walls of the cabins, for example configured for at least one of the following fixings: by screws, dowels, embedding, pressure, gluing, etc.

[0106] However, boxes 15 directly integrated into the walls 3 of the cabin are not excluded.

[0107] GENERAL INTERPRETATION OF TERMS

[0108] For the purpose of understanding the present invention, the term "comprising" and its derivatives, as used herein, are considered non-limiting terms specifying the presence of the stated features, elements, components, groups, integers and / or phases, but not excluding the presence of other unstated features, elements, components, groups, integers and / or phases. The foregoing also applies to words of similar meaning, such as the terms "including", "having" and their derivatives. Furthermore, the terms "part", "section", "portion", "member" or "element", when used in the singular, may have the dual meaning of a single part or a plurality of parts. As used herein to describe the form(s) of embodiment above, the following directional terms "forward", "backward", "up", "down", "vertical", "horizontal", "below" and "transverse", as well as any other similar directional terms, refer to the described embodiment in the operating position. Finally, terms such as "basically", "about" and "approximately", as used herein, mean a reasonable deviation from the modified term, so that the final result is not significantly changed.

[0109] Although only certain embodiments have been chosen to illustrate the present invention, it will be apparent to those skilled in the art upon reading this description that various modifications and variations may be made without departing from the scope of the invention. For example, the dimensions, shape, position, or orientation of the various components may be changed as needed and / or desired. Components shown directly connected or in contact with each other may have intermediate structures disposed therebetween. The functions of one element may be performed by two elements and vice versa. The structures and functions of one embodiment may be adopted in another embodiment. It is not necessary that all advantages be present at the same time in a particular embodiment.Each feature that is novel over the known art, alone or in combination with other features, should also be considered a separate description of other inventions of the applicant, including the structural and / or functional concepts embodied by such features. Therefore, the foregoing descriptions of embodiments according to the present invention are provided for the purpose of illustration only and not for the purpose of limiting the invention.

Claims

Claims

1. Roll (10) of masking film for paint booths, characterized in that it comprises an electrostatic film (6) wound to form the roll (10) around a winding axis X, where said film (6), in the wound configuration, has a length L in the direction of said axis X where L<200 cm.

2. Roller (10) according to claim 1, characterized in that L belongs to one of the following intervals: [25-50] cm, [75-100] cm, [125-150] cm, [175-200] cm.

3. Roller (10) according to claim 2, characterized in that L belongs to one of the following intervals: - [40-50[ cm; - [90-100[ cm; - [140-150[ cm; - [190-200[ cm.

4. Roll (10) according to one of the preceding claims 1 to 3, characterized in that said film (6), in the rolled-up configuration, has at least one edge orthogonal to the X axis folded to form a wing (30), so that when the film (6) is in an unrolled configuration and the wing (30) is unfolded, the film (6) has a length Lmax in the direction parallel to the X axis greater than L.

5. Roller (10) according to claim 4, characterized in that it has the two edges orthogonal to the X axis folded to form a wing (30).

6. Roller (10) according to claim 5, characterized in that the wings (30) in the folded configuration are separated from each other in the direction of the X axis.

7. Roll (10) according to one of claims 4 to 6, characterized in that the wings (30) have a length H in the direction parallel to the axis X which is less than the length L of the wound film (6).

8. Roller (10) according to claim 7, characterized in that H belongs to one of the following intervals: [1-20] cm; [1-15] cm; [1-10] cm.

9. Roll (10) according to one of the preceding claims 1 to 8, characterized in that it is a ribbon with constant length L.

10. Roller (10) according to claim 9 in dependence on one of claims 4 to 8, characterized in that said ribbon has a constant length Lmax.

11. Roller (10) according to claim 10 as dependent on claim 7 or 8, characterized in that the ribbon has at least one wing with constant height H.

12. Roller (10) according to claim 4 or one of claims 5 to 11 dependent on claim 4, characterized in that, in the rolled-up configuration, it has an inner main face (7), oriented towards the X axis, and an outer main face (8), opposite the inner main face (7), the wings (30), in the rolled-up configuration, being folded so as to rest on the inner main face (7).

13. Kit comprising: - a roller (10) according to one of the preceding claims 1 to 12; - a box (15) for housing said roller (10) configured to support it in an operational unwinding configuration.

14. Kit according to claim 13, characterized in that said box (15) comprises means for application to a paint booth wall or is integrated into the wall of a booth.

15. Kit according to claim 13 or 14, characterized in that the roller (10) is able to be freely inserted and removed from the box (15) for replacement, and it is rotatable when unrolling around the horizontal X axis.

16. Kit according to one of claims 13 to 15, characterized in that said box (15) comprises an outlet opening (19), configured to allow the film (6) to exit as it is unwound from the roll (10).

17. Kit according to claim 16, characterized in that said outlet opening (19) is a horizontal notch.

18. Kit according to one of claims 13 to 17, characterized in that it comprises a slowing device (20) in order to slow down the unwinding of the roll (10).

19. Kit according to claim 18, characterized in that the slowing device (20) comprises a friction element (21), movably fixed to the box (15), and pushing elements (22) making it possible to push the friction element (21) towards the roller (10).

20.

21.

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29.

30. Kit according to claim 19, characterized in that the thrust elements (22) are elastic means interposed between the friction element (21) and the box (15). Kit according to one of claims 15 to 20, characterized in that, to facilitate the replacement of the roller (10), the housing (15) comprises a cover (16) which can be raised or removed. Kit according to claim 21, characterized in that the cover (16) is configured to rotate around an axis XI parallel to the axis X of the roller (10) when the latter is in operational position in the housing (14). Kit according to claim 22, characterized in that the axis of rotation XI of the cover (16) is defined by one or more hinges (17). Kit according to one of claims 13 to 23 dependent on one of claims 4 to 8, characterized in that the roll (10), the box (15) and in general the kit (5) have a length R in the direction of the unwinding axis X less than Lmax; preferably, this length R is close to a limit equal to half a meter or its multiples, and it is less than this limit. Cabin comprising a room (2) delimited at least by a series of adjacent vertical walls (3), where on at least some of the walls (3) there is a series of kits according to one of claims 13 to 24. Cabin according to claim 25, characterized in that the kits are positioned so as to keep the rollers (10) with the X axis horizontal and parallel to the wall (3) on which the kit (5) is placed. Cabin according to claim 25 or 26, characterized in that the kits (5) are arranged in succession between them at regular distances in the horizontal direction. Cabin according to claim 27, characterized in that the length R of a kit (5) added to its distance D from one of the adjacent kits (5) is equal to 50, 100, 150, 200 cm. Cabin according to one of claims 25 to 28, characterized in that it comprises rollers (10) of different sizes. Cabin according to claim 29, characterized in that the sizes differ from each other at least by the length L of the film (6), measured in the direction of the winding axis X of the roll (10).

31. corresponding, when the film (6) is in a wound configuration to form said roll (10). Cabin according to one of claims 25 to 30, characterized in that it is a paint cabin.

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