Masking film roll for paint booths and similar equipment; kit including said roll; booth including a plurality of these kits

Abstract

Masking film roll for paint booths and the like, kit comprising said roll, booth comprising a plurality of these 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, where said film (6), in its wound configuration, has a length L in the direction of said axis X where L ≤ 200 cm. Figure to be published with the abbreviation: Figure 7

Description

Title of the invention: Masking film roll 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 these kits. The invention is particularly intended for automotive paint booths; however, other uses are not excluded when the walls of a booth need to be protected against contact with certain substances. STATE OF THE ART

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

[0003] In the known technique, the film is supplied in rolls, where it is folded over itself several times with fold lines orthogonal to the axis of the roll, as can be seen in [Fig.1].

[0004] This roll is not practical to use and therefore requires at least two people to apply it. In the first phase, one person unrolls the roll horizontally while the other holds the film. Then, it must be applied evenly to the walls. This means that both operators must coordinate to secure the top edge of the film to the booth walls with adhesive tape.

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

[0006] The two people will therefore need to have a lot of time and show a lot of patience to protect the walls of the cabin, in a professional and uniform manner, as illustrated in [Fig.2].

[0007] Other drawbacks of the prior art are that it is not possible to replace only part of the masking on the cabin wall. The entire film must be replaced. This makes the system described in the prior art impractical and rather expensive.

[0008] The object 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 the application of an electrostatic masking film on the walls of a cabin more practical and faster.

[0010] Another objective of the present invention is to enable a single person to easily conceal the walls of a cabin.

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

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

[0013] Another objective 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 including said roll, and by a booth including a plurality of these kits.

[0016] The present invention relates to a masking film roll for paint booths and the like, comprising an electrostatic film wound to form the roll around a winding axis X, where 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 its wound configuration, has at least one edge perpendicular to the X axis folded to form a wing, so that when the film is in an unwound 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 both 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 roller is a ribbon with constant L.

[0032] Advantageously, said ribbon has a constant Lmax.

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

[0034] Advantageously, the roller, in its wound configuration, has a main face an interior, oriented towards the X axis, and an exterior main face, opposite the interior main face, the wings, in rolled configuration, being folded so as to rest on the interior 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 unfolding process.

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

[0039] Advantageously, the roller is suitable for being freely inserted and removed from the box for replacement, and it is rotatable when unwinding around the horizontal X axis.

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

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

[0042] Advantageously, the kit includes a deceleration device to slow down the unrolling the roll.

[0043] Advantageously, the slowing device includes a friction element, movably fixed to the box, and push elements enabling the friction element to be pushed towards the roller.

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

[0045] Advantageously, to facilitate roller replacement, the housing includes a hinged 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 the 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 keep 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 includes 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 cabin is a paint booth. DETAILED DESCRIPTION

[0056] Other features and advantages of the present invention will become clearer from the following detailed description of its preferred embodiments, made with reference to the accompanying drawings and given by way of example only and not limitation. In these drawings:

[0057] - [Fig.1] 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 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 the 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 the 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 in its entirety under reference number 1.

[0068] 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 are a series of kits according to the present invention, each kit being indicated as a whole by the reference number 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 number 10.

[0071] Each roller 10 is contained in operational position in a box 15 of the respective kit, in which it presents a horizontal winding and unwinding axis X 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 it is rotatable when unwinding around the horizontal X axis.

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

[0074] Preferably, the kit includes a slowing device 20 for slowing the unwinding of the roller 10, in order to prevent accidental unwinding, for example. Preferably, the slowing device includes a friction element 21, movably fixed to the housing 15, and thrust elements 22 for pushing the friction element towards the roller 10, preferably perpendicular to the axis of rotation X. For example, the thrust 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 includes a hinged 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 its 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], film 6 is a ribbon wound to form 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 is located 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 unfolded, it has a length Lmax greater than the length L in the wound configuration ([Fig.6]).

[0088] Figure 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 folded configuration are preferably spaced in the direction of the X axis, i.e. 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 rolled 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 strip with constant L. Preferably, said strip has constant Lmax, that is to say, it is overall rectangular in shape. Preferably, said strip 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 to the first.

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

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

[0095] As shown in [Fig.3] and [Fig.4], during 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 unfolded.

[0096] Film 6 is unwound by pulling it downwards, then cut along a T-cut line.

[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 booths are generally a multiple of one meter or half a meter in length, 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 them, generating uniform masking. [Fig. 3] shows the example where the kits are arranged one after the other horizontally. 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 illustrated example, 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 it is desired 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 by 110 and 210, where only the wings 30 differ from roller 10. In particular, roller 110 has only one wing 30, while roller 210 has no wings.

[0103] In both cases, the length L of the film in the rolled configuration complies with the conditions stated above with regard to the length L.

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

[0105] It should be noted that the boxes 15 preferably include means for application 40 to the walls of the cabins, for example configured for at least one of the following fixings: by screws, plugs, recessed, pressure, by 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 purposes of understanding the present invention, the term "comprising" and its derivatives, as used herein, are considered non-limiting terms specifying the presence of the declared features, elements, components, groups, integers, and / or phases, but not excluding the presence of other undeclared features, elements, components, groups, integers, and / or phases. The foregoing also applies to words having a 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, can have the dual meaning of a single part or a plurality of parts. As used in this document to describe the form(s) of In the above embodiment, the following directional terms—"forward," "backward," "up," "down," "vertical," "horizontal," "below," and "transverse"—as well as any other similar directional terms, refer to the embodiment described in its operating position. Finally, terms such as "basically," "about," and "approximately," as used here, signify a reasonable deviation from the modified term, such that the final result is not significantly altered.

[0109] Although only certain embodiments have been chosen to illustrate the present invention, it will be clear to experts in the field upon reading this description that various modifications and variations can be made without departing from the scope of the invention. For example, the dimensions, shape, position, or orientation of the various components can be modified as needed and / or desired. The components shown directly connected or in contact with each other may have intermediate structures arranged between them. 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 for all the advantages to be present simultaneously in a particular embodiment.Each feature that is original compared to the known technique, alone or in combination with other features, must also be considered a separate description of other inventions of the applicant, including the structural and / or functional concepts incorporated by those features. Therefore, the preceding descriptions of embodiments according to the present invention are provided by way of illustration only and not for the purpose of limiting the invention.

Claims

Demands

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 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 any one of the preceding claims 1 to 3, characterized in that said film (6), in rolled 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 unrolled, 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 both 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 folded configuration are separated from each other in the direction of the X axis.

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

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

11. Roller (10) according to claim 10 depending 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 any one of claims 5 to 11 depending on claim 4, characterized in that, in the wound configuration, it has an inner principal face (7), oriented towards the X axis, and an outer principal face (8), opposite the inner principal face (7), the wings (30), in the wound configuration, being folded so as to rest on the inner principal face (7).

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

14. Kit according to claim 13, characterized in that said box (15) includes means for application on 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 unwinding around the horizontal X axis.

16. Kit according to any one of claims 13 to 15, characterized in that said box (15) includes an exit 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 exit opening (19) is a horizontal notch.

18. Kit according to any one of claims 13 to 17, characterized in that it includes a slowing device (20) to slow down the unwinding of the roller (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 push elements (22) enabling the friction element (21) to be pushed towards the roller (10).

20.

21.

22.

23.

24.

25.

26.

27.

28.

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 any one of claims 15 to 20, characterized in that, to facilitate the replacement of the roller (10), the housing (15) includes a hinged or removable cover (16). 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 any one of claims 13 to 23 depending on any one of claims 4 to 8, characterized in that the roller (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 multiples thereof, and 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) is a series of kits according to any one of claims 13 to 24. Cabin according to claim 25, characterized in that the kits are positioned so as to maintain 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 at regular intervals 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 any 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 roller (10)

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

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