AT520941B1 - PROTECTIVE CASE FOR WINDOW WING OR DOOR LEAVES - Google Patents

Abstract

The present invention relates to a protective cover (10) for window sash (11) or door leaves, wherein the protective cover (10) has two superimposed film surfaces, wherein the film surfaces consist of a plastic film, wherein the film surfaces are formed substantially rectangular or square, wherein the protective cover (10) has four sides (1, 2, 3, 4), wherein the first, second and third sides (1, 2, 3) are formed closed and the fourth side (4) is open, wherein the first side ( 1) of the fourth side (4), wherein the protective cover (10) has at least one perforation line (5), characterized in that the at least one perforation line (5) at a distance (a) from the first side (1) substantially along a straight line and substantially parallel to the first side (1). Furthermore, the invention relates to a method for producing such a protective cover (10) and the use of a protective cover (10) according to the invention and a method for covering a window sash (11) or door leaf.

Description

The invention relates to a protective cover for window sashes or door leaves, the protective cover having two superimposed film surfaces, the film surfaces consisting of a plastic film, the film surfaces being essentially rectangular or square, the protective cover having four sides, the first Side, the second and third sides are closed and the fourth side is open, the first side opposite the fourth side. The invention further relates to a method for producing a protective cover according to the invention, a method for covering a window sash or door leaf with a protective cover according to the invention and the use of such a protective cover.

BACKGROUND OF THE INVENTION AND PRIOR ART In many construction projects, window and door installation is still carried out during the shell construction phase. After installation, the windows and doors are unprotected until they are plastered, at which the plasterers cover windows and doors extensively up to a plastering strip with protective film and adhesive tape. After finishing the plastering work, these protective films and adhesive tapes are removed again to improve the incidence of light. Adhesive residues that are difficult to remove often remain on the window elements and window panes.

Consequently, the windows and door leaves remain unprotected until the handover of the apartment, although further work by different trades is still carried out in the rooms. During this period, there is often superficial soiling up to small surface damage. This is mostly due to building dust, plaster, mortar and adhesive residues, which - if at all - are usually removed improperly and using unsuitable agents.

[0004] DE 1 908 495 U1 describes a protection for windows in which a film with suction cups is applied as a cover to window glass. In practice, this window protection turned out to be unusable because suction cups require very clean and smooth surfaces for adhesion.

Document DE 23 37 860 A1 describes a protective cover which consists of a plastic film. With such a protective cover, a window sash is encased before the window is installed. The window frame is wrapped separately with another protective cover. In order to be able to open a window after installation, the window handles must be operated from the outside through the plastic film. The window handle is gripped together with the plastic film. This proves to be extremely impractical, since the plastic film can also tear in an area distant from the window handle when the window handle is rotated by at least 90 °, and the protective effect is therefore only limited.

BRIEF DESCRIPTION OF THE INVENTION The object of the present invention is therefore to improve a protective cover or a protective cover of the type mentioned at the outset in such a way that the protective film can remain on the windows and doors to be protected during construction site operation and still have access to the fittings , in particular window handles and door handles, exists without disability.

This object is achieved by a protective cover for window sashes or door leaves, the protective cover having two superimposed film surfaces, the film surfaces consisting of a plastic film, the film surfaces being essentially rectangular or square, the protective cover having four sides, whereby the first side, the second side and the third side are closed and the fourth side / 8

AT 520 941 B1 2019-09-15 Austrian

The patent office is open, the first side lying opposite the fourth side, the protective cover having at least one perforation line, the at least one perforation line running at a distance from the first side essentially along a straight line and essentially parallel to the first side.

The four sides of the protective cover correspond to the four sides of a rectangle or square. The open page is called the fourth page. The first page is opposite the fourth page. The two pages adjacent to the first and fourth pages are referred to as the second page and third page. Each side has an essentially right angle to the respectively adjacent side.

In use, the protective cover is then slipped over a window sash or a door leaf so that a film surface is arranged on one side of the window or door leaf, and the other film surface is arranged on the other side of the window or door leaf. In the streaked state, the perforation line is arranged in the area of a window handle or a door handle, the perforation line being torn open at least in one area in order to allow free access to a window handle or door handle.

The perforation line represents a predetermined breaking point at which the protective cover can be broken.

[0011] The film surfaces preferably consist of an essentially transparent or translucent plastic film. The film surfaces particularly preferably consist of an essentially transparent plastic film. This ensures that the protective cover does not darken.

In a preferred embodiment variant it can be provided that the at least one perforation line runs continuously from the second side to the third side, the second and third sides adjoining the open side and the first side.

[0013] The perforation line particularly preferably runs at a distance from the first side of 65 mm to 85 mm, preferably 75 mm. In contrast, the width of the protective cover is significantly larger than the distance between the perforation line and the first side. The width is preferably 100 mm to 140 mm.

In an embodiment variant it is therefore provided that the width (b) is at least five times as large as the distance of the perforation line from the first side (a), preferably at least ten times as large.

The plastic film can consist of any, essentially transparent plastic, for example polypropylene, polyethylene, polyvinyl chloride or corresponding blends.

[0016] The perforation line preferably has the shape of an essentially dashed line. The perforation line preferably has slots of a length of 1 mm, the slots forming the perforation line being at a distance of 1.5 mm from one another.

[0017] In one embodiment variant, the perforation line penetrates both film surfaces. In an alternative embodiment variant, only one of the two film surfaces can have a perforation line.

For a protective cover according to the invention it is preferably provided that the first side has a folded seam and the second side and the third side each have a weld seam. The weld seam of the second and third sides is preferably between 1 mm and 15 mm, preferably between 5 mm and 10 mm, wide.

The weld seams of the second and third sides run essentially parallel to one another and the fold seam is arranged essentially orthogonally to the two weld seams.

Protective covers according to the invention can be produced by a method comprising the following steps:

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i) unwinding a plastic film from a roll;

ii) optionally folding the plastic film to form two superimposed film surfaces;

iii) perforating the folded plastic film and forming a perforation line by means of the perforation wheel during unwinding;

iv) · stopping the unwinding process • welding the two film surfaces • rewinding the plastic film according to the desired length (I) of the protective cover • stopping the development process again • welding the two film surfaces • further unwinding the plastic film according to the desired length (I) of the protective cover

v) Removing a protective cover, steps i) to v) being repeated, wherein in step iv) the welding of the film surfaces in the vicinity of the second or third side of a first protective cover and the welding of the film surfaces in the vicinity of the third or second side of another Protective cover happens essentially at the same time.

The perforation takes place essentially in a continuous process, the plastic film being unwound from a roll in the process direction and the speed at which the plastic film is unwound essentially determines the speed of the perforation process.

Preferably, the protective cover is separated in each case in a position between the weld seams produced in step iv).

The above object is also achieved by a method for covering a window sash or door leaf with a protective cover according to the invention and the use of such a protective cover.

A protective cover according to the invention is slipped over a window sash or a door leaf such that a film surface is arranged on one side of the window sash or door leaf and the other film surface is arranged on the other side of the window sash or door leaf.

In the streaked state, the perforation is arranged in the area of a window handle or a door handle, the perforation being torn open in at least one area to allow free access to a window handle or door handle.

BRIEF DESCRIPTION OF THE DRAWINGS Further advantages and details of the invention are explained with reference to FIG. 1 and the description of the figures. A protective cover according to the invention for a window sash is described by way of example, but the following statements also apply to a protective cover according to the invention for door leaves.

Fig. 1 shows an example of a window sash with a protective cover according to the invention.

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows an example of a window sash 11 with a protective cover 10 according to the invention, which has three closed sides 1, 2, 3 and an open side 4 and a perforation line 5. The perforation line 5 runs at a distance a essentially parallel to the first side 1. A width b and a length I can be assigned to the protective cover. The dots distributed on the protective cover identify the plastic film, but no perforation.

Fig. 1 shows a window comprising a window frame 12 and a window sash 11 with window handle 6, the window sash 11 being provided with a protective cover 10 according to the invention. The protective cover 10 is square according to the shape of the window sash 11

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Patent office trained. Depending on the shape of a window sash 11, a protective cover according to the invention can also be rectangular, the dimensions being adaptable to those of the window sash 11 to be protected. The dimensions of the film surfaces are preferably around 160 cm x 120 cm (I x b) for window sashes (or around 240 cm x 120 cm for door leaves).

The protective cover 10 has a designated as the fourth side 4 open side 4, making it possible to slide the protective cover 10 over a window sash 11. The two sides 2, 3 adjoining the permanently open fourth side 4, referred to as second side 2 and third side 3, are closed by welding. By welding is meant the thermal connection of the film surfaces to one another. Weld seams are formed, which are 7 mm wide in the exemplary embodiment. You can e.g. also 1 mm to 15 mm, preferably 5 mm to 10 mm, wide.

Also the first side 1 opposite the open fourth side 4 is closed, however, this does not have a weld seam, but a folded seam or a kink. Accordingly, the shape of the cover of a protective cover according to the invention is achieved in that a plastic film is folded, as a result of which the first side 1 is formed with a folded seam or crease, and the film surfaces are then welded in the vicinity of the second and third sides 2, 3. The fold seam or the crease form on the one hand the common first side 1 of a protective film 10 and on the other hand a common side of the film surfaces.

The protective cover 1 has a perforation line 5 parallel to the first side, this being produced in a continuous process in the process direction. The process direction here is understood to be the direction which corresponds to the direction of propagation of the plastic film during the manufacturing process, for example caused by a conveyor belt. The plastic film can be unwound from a roll as raw material, the first side 1 being aligned parallel to the process direction. The perforation line 5 takes place during the unwinding of the plastic film from the roll, the perforation line 5 being produced by means of a perforation tool, for example a perforation wheel, the axis of rotation of the perforation wheel being oriented orthogonally to the process direction.

The perforation line has the shape of a dashed line, the perforation line 5 being formed by slots with a length of 1 mm at a distance of 1.5 mm from one another. The slots are punched or punched, although a length, but no exact width, can be assigned to a pierced slot. Unlike punching, there is no plastic waste when piercing.

The perforation line 5 is arranged parallel to the first side 1 and preferably at a distance of 65 mm - 85 mm, preferably 75 mm, to the first side 1. The perforation line 5 preferably runs from one welded, second side 2 to the other welded, third side 3, or vice versa.

The manufacturing process of protective sleeves 10 according to the invention has the following steps:

i) unwinding a plastic film from a roll;

ii) optionally folding the plastic film to form two superimposed film surfaces;

iii) perforating the folded film using the perforation wheel during unwinding;

iv) · stopping the unwinding process • welding the two film surfaces • rewinding the plastic film according to the desired length (I) of the protective cover (10) • stopping the unwinding process • welding the two film surfaces • further unwinding the plastic film according to the desired length (I ) of the protective cover

v) removing a protective cover (10), steps i) to v) being repeated.

In step i) a plastic film is unwound from a roll. The

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Raw material is provided by external suppliers. In the event that the plastic film is already provided folded, i.e. If the unwound plastic film already has two film surfaces, step ii) is omitted.

A perforation wheel which is fixed in the process direction rotates on its circumference essentially at the speed at which the plastic film is unwound. According to step iii), the plastic film is perforated in the area described during the unwinding. For this reason, we speak of a "continuous process". In this context, a non-continuous process would mean the perforation orthogonal to the process direction. The process of welding (step iv)) as well as the separation (step v)) do not take place continuously according to this definition.

In step iv) the film surfaces are welded to one another, the process of unwinding being stopped in the meantime. It has proven to be particularly advantageous if two parallel weld seams are produced at a distance of around 12 mm from one another in the course of a welding process. After the first process of welding, the plastic film is further unwound. At a distance corresponding to the desired length I of a protective cover 1 according to the invention, for example 160 cm for window sashes (or 240 cm for door leaves), the plastic film is stopped again and the welding process described is repeated.

The distance between the two weld seams generated simultaneously (12 mm) forms the cut surface for step v). After separation, a protective cover 1 according to the invention is completed. One of the two weld seams then forms the welded, closed side 2, 4 of a first protective sleeve 10 and the other weld seam forms the other welded, closed side 4, 2 of a next protective sleeve 10 'according to the invention.

By repeating steps i) to v), the protective cover 10 according to the invention can be produced in series, inexpensively and quickly using such a method.

In an alternative embodiment, the cover shape of a protective cover 10 can also be achieved in that a plastic film is extruded in the form of a tube and only the first side 1 opposite the open side is welded. However, this method has the disadvantage that the perforation line 5 cannot be produced in a continuous process and must be produced orthogonally to the process direction.

As indicated in FIG. 1, a window handle 6 of a window sash 11 provided with a protective cover 10 according to the invention can be made freely accessible and actuated without problems by at least partially tearing open the perforation line 5.

The distance from the first side 1 essentially parallel and essentially straight perforation line 5 is chosen with 65 mm - 85 mm, preferably 75 mm, such that the perforation line 5 when using a protective cover 10 according to the invention in the vicinity of a window handle 6 is arranged. Thus, a protective cover 10 can be slipped over a window sash 11 of an open window, the open fourth side 4 being pulled over the window sash 11 such that the open fourth side 4 ultimately comes to lie near a window reveal, with a film surface on one side of the window sash 11, and the other film surface is arranged on the other side of the window sash 11. As a result, a window sash 11 is protected from dirt and moisture without the opening and closing of windows being hindered.

Claims (13)

1. protective cover (10) for window sash (11) or door leaves, the protective cover (10) having two superimposed film surfaces, the film surfaces consisting of a plastic film, the film surfaces being essentially rectangular or square, the protective cover (10) has four sides (1, 2, 3, 4), the first side (1), the second side (2) and the third side (3) being closed and the fourth side (4) being open, the the first side (1) lies opposite the fourth side (4), characterized in that the protective cover (10) has at least one perforation line (5), the at least one perforation line (5) at a distance (a) from the first side (1 ) runs essentially along a straight line and essentially parallel to the first side (1). 2. Protective cover (10) according to claim 1, characterized in that the at least one perforation line (5) runs continuously from the second side (2) to the third side (3), the second and third sides (2, 3) at the open side (4) and adjacent to the first side (1). 3. Protective cover (10) according to claim 1 or 2, characterized in that the perforation line (5) at a distance (a) of 65 mm - 85 mm, preferably 75 mm, to the first side (1). 4. Protective cover (10) according to one of claims 1 to 4, characterized in that the perforation line (5) has essentially the shape of a dashed line. 5. Protective cover (10) according to claim 4, characterized in that the perforation line (5) has slots of a length of 1 mm, the slots forming the perforation line (5) being at a distance of 1.5 mm from one another. 6. Protective cover (10) according to one of claims 1 to 5, characterized in that the perforation line (5) penetrates both film surfaces. 7. Protective cover (10) according to one of claims 1 to 6, characterized in that the first side (1) has a folded seam and the second and third sides (2, 3) each have a weld seam. 8. Protective cover (10) according to claim 7, characterized in that the weld seam of the second and third side (2, 3) is between 1 mm and 15 mm, preferably between 5 mm and 10 mm, wide. 9. Protective cover (10) according to claim 7 or 8, characterized in that the weld seam of the second and third sides (2, 3) are arranged essentially parallel to one another and the fold seam is arranged essentially orthogonally to the two weld seams. 10. Protective cover (10) according to one of claims 1 to 9, characterized in that the film surfaces consist of an essentially transparent plastic film. 11. A method for producing protective covers (10) according to one of claims 1 to 10, comprising the following steps: i) unwinding a plastic film from a roll; ii) optionally folding the plastic film to form two superimposed film surfaces; iii) perforating the folded plastic film by means of the perforation wheel and forming a perforation line during unwinding; iv) · stopping the development process • welding the two film surfaces • rewinding the film according to the desired length (I) of the protective cover (10) • stopping the development process again • welding the two film surfaces 6.8 AT 520 941 B1 2019-09-15 Austrian Patent Office • Further unwinding of the plastic film, according to the desired length (I) of the protective cover (10) v) cutting off a protective cover (10), steps i) to v) being repeated, wherein in step iv) the welding of the film surfaces in the vicinity of the second (2) or third (3) side of a first protective cover (10) and that Welding of the film surfaces in the vicinity of the third (3) or second (2) side of a further protective cover (10 ') essentially occurs simultaneously. 12. The method according to claim 11, characterized in that the perforation takes place in a substantially continuous process, the plastic film being unwound from a roll in the process direction and the speed at which the plastic film is unwound essentially determines the speed of the perforation process. 13. The method according to any one of claims 11 or 12, characterized in that the protective cover (10) is separated, in each case in a position between the weld seams produced in step iv).