NL2023784B1

NL2023784B1 - Film dispenser with film ripper, and a knife

Info

Publication number: NL2023784B1
Application number: NL2023784A
Authority: NL
Inventors: Cornelis Maria Stork Dries
Original assignee: Cornelis Maria Stork Dries
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2021-05-17

Abstract

The invention relates to a film dispenser comprising a film roll having a core and multiple windings of film around the core, a left roll holder and a right roll holder‘ that hold. the ends of the core, and. a film 5 ripper that extends parallel to the film roll between the left roll holder‘ and. the right roll holder, wherein. the filnl ripper comprises a jplate which forms a front blade that merges over a straight first fold into a back blade to form a V—configuration, and a series of cutting holes that 10 extend through the first fold and into the front blade and the back blade, wherein the film extends from the outermost winding over the first fold.

Description

P134882NL01 Film dispenser with film ripper, and a knife

BACKGROUND The invention relates to a film dispenser comprising a film roll having a core and multiple windings of film around the core.

Such film dispensers are typically used to wrap a thin film around an object to be sealed, such as a pallet with a stack of products to obtain a stable unity. After sealing the film is teared off by hand, or it is cut off along a toothed edge of the film dispenser. However, the toothed edges are sharp enough to cause accidental injuries, for example after cutting when the next begin of the film is taken from the remaining film roll.

It is an object of the present invention to provide a film dispenser with safe provisions to cut off the dispensed film.

SUMMARY OF THE INVENTION According to a first aspect, the invention provides a film dispenser comprising a film roll having a core and multiple windings of film around the core, a left roll holder and a right roll holder that hold the ends of the core, and a film ripper that extends parallel to the film roll between the left roll holder and the right roll holder, wherein the film ripper comprises a plate which forms a front blade that merges over a straight first fold into a back blade to form a V-configuration, and a series of cutting holes that extend through the first fold and into the front blade and the back blade, wherein the film extends from the outermost winding over the first fold.

The film dispenser according to the invention comprises a film ripper having a plate in a V- configuration. Thereby there are no sharp projecting edges that may cause injuries. Instead, the film ripper comprises cutting holes in the plate. When the film ripper hits the film, the film is urged to locally sink into the cutting holes while it remains onto the first fold between the cutting holes. Hereby the film ripper obtains full grip onto the film. By causing a sideways movement with respect to the film, for example by moving the film dispenser transversely to the elongate direction of the dispensed film, it is ripped off evenly over its full width.

In an embodiment the front blade merges into the back blade according to a fluent curvature with a circular or parabolic section at the first fold. It is then safe to swipe with the hands over the film ripper in its elongate direction.

In an embodiment thereof the curvature has an outer radius that is equal to or larger than the thickness of the plate.

In addition thereto the curvature may have an outer radius that is maximal ten times the thickness of the plate.

In an embodiment the front blade is under an angle between 10 degrees and 120 degrees with respect to the back blade, wherein the front blade is preferably under a sharp angle between 10 degrees and 90 degrees with respect to the back blade, and preferably under a sharp angle between 20 degrees and 80 degrees with respect to the back blade.

In an embodiment the cutting holes are symmetrical with respect to the first fold.

In an embodiment the cutting holes have first edges in the front blade and the back blade that are obliquely oriented to the first fold, whereby obliquely directed cutting teeth may be defined inside the blades.

In an embodiment thereof the first edges extend from the first fold into the front blade and the back blade under a sharp angle between 20 degrees and 80 degrees, and preferably between 30 degrees and 70 degrees.

In an embodiment the first edges face away from the first fold, whereby they can urge the film further inside the cutting holes during the sideways movement of the film dispenser.

In an embodiment the first edges merge into each other at the first fold, wherein the plate locally projects upwards from the remainder of the first fold at the merger of the first edges. The local projections may initiate the gripping of the film by the film ripper.

In an embodiment the first edges form a parabolic curvature, having an apex at the first fold to prevent sharp edges at the first fold. The apexes provide at the first fold a smooth finishing of the cutting holes while being effective in ripping the film.

In an embodiment the cutting holes have two oppositely directed first edges that run towards each other towards the first fold, whereby the film ripper acts in the same way in both sideways moving directions.

In an embodiment the cutting holes comprise second edges in the front blade and the back blade that merge into the first edges spaced apart from the first fold.

In an alternative embodiment the cutting holes have first edges in the front blade and the second blade that are oriented perpendicular to the first fold.

In an embodiment the left roll holder and the right roll holder are resilient with respect to the film ripper, wherein the roll holders are resiliently bendable between a relaxed position in which the roll is free to rotate and a tightened position in which the roll holders are in abutment with the windings. This specific resiliency provides a brake for the rotating film roll which can be activated when the film needs to be tightened, for example just before ripping it with the film ripper.

In an embodiment the left roll holder and the right roll holder comprise a handle for manually holding the film dispenser with two hands. When combined with abovementioned resiliency, the handles can also be used to activate the brake.

In an embodiment the plate of the film ripper is a metal plate, preferably a steel plate, most preferably a stainless steel plate, to ensure many years of use.

In a lightweight embodiment the plate of the film ripper is a plastic plate, preferably a biodegradable plastic plate.

In an embodiment the plate of the film ripper is a cardboard plate.

In an embodiment the left roll holder, the right roll holder and the film ripper are mutually folded cardboard plate parts that form one unity in a cardboard blank. Such cardboard blank may be supplied together with a package of film rolls, wherein for those film rolls a new cardboard blank is fold to obtain the film dispenser and the refills for it.

In an embodiment thereof the left roll holder, the right roll holder and the film ripper form a cardboard box with a substantially rectangular outline to form a form stable unity.

In an embodiment the film is a flexible film with a thickness of less than 150 um, preferably less than 100 um, and most preferably less than 50 um.

In an embodiment the film is made of a resin, preferably LLDPE, LDPE or EVO. In an embodiment the film is made of a biodegradable plastic.

According to a second aspect, the invention provides a knife comprising a plate having an outer contour that defines a cutting blade, wherein the cutting blade has a straight or curved cutting edge and a series of cutting holes that are recessed from the cutting edge and that debouche in the cutting edge. 5 In an embodiment the cutting holes are bounded by opposite first edges that taper towards the cutting edge. In an embodiment the cutting holes are bounded by a second edge that extends between the first edges. In an embodiment the plate is a metal plate, preferably a steel plate, most preferably a stainless steel plate. In an embodiment the plate is a plastic plate, preferably a biodegradable plastic plate. In an embodiment the plate is a cardboard plate. The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, in particular the aspects and features described in the attached dependent claims, can be made subject of divisional patent applications.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be elucidated on the basis of an exemplary embodiment shown in the attached drawings, in which: Figures 1A-1G are isometric views of a film dispenser according to a first embodiment of the invention, and subsequent exploded views and details thereof; Figure 2 is an isometric view of a film dispenser according to a second embodiment of the invention; Figure 3 is an isometric view of a film dispenser according to a third embodiment of the invention; Figures 4A and 4B are an isometric front view and an isometric back view of a film dispenser according to a fourth embodiment of the invention;

Figures 5SA-5E are an isometric front view and a side view of a film dispenser according to a fifth embodiment of the invention, and details of a cardboard blank from which the film dispenser is fold; and Figures 6A and 6B show two embodiments of a knife according to the invention.

DETAILED DESCRIPTION OF THE INVENTION Figures 1A-1C show a film dispenser 100 according to a first embodiment of the invention. The film dispenser 100 comprises a film roll 1 having a cylindrical cardboard core 2 and multiple windings 3 of foil or film 4 around it of which the end 5 is released to take off the film 4 from the film roll 1. The film 4 is a flexible and stretchable film that is used for packaging purposes. The film 4 typically has a thickness of less than 150 um, preferably less than 100 um, most preferably less than 50 um and is typically made of a resin, such as LLDPE, LDPE or EVO, or a biodegradable equivalent. The film 4 typically sticks onto itself in a releasable manner without additional adhesives. This enables the film 4 to be wrapped around an object to be sealed, such as a pallet with a stack of products to form a stable unity. The film 4 may be shrinkable, wherein the film 4 shrinks when exposed to heat. The film 4 may also be a cling film or plastic wrap for household preservation purposes. The film dispenser 100 comprises a film ripper 101 along the width of the film 4. The film ripper 101 is at one side connected to a left roll holder 150 and at the opposite side to a right roll holder 170 that together confine the film rell 1. The left roll holder 150 is formed with a steel plate that defines a base plate 151 with a circular hole 152 for the left end of the cardboard core 2, a gripping plate 153 that projects outwards from the film roll 4 in the elongate direction thereof, and a mounting plate 155 that is directed towards the film ripper 101. The left roll holder 150 is provided with a mounting slot 156 in the corner between the base plate 151 and the mounting plate 155, and a square mounting hole 157 near the end of the mounting plate 155. On the gripping plate 153 a left handle 154 is provided having its elongate direction extending perpendicular to the elongate direction of the film roll 4. The right roll holder 170 is formed of a steel plate that defines a base plate 171 with a circular hole 172 for the right end of the cardboard core 2, a gripping plate 173 that projects obliguely above the film roll 4, and a mounting plate 175 that is directed towards the film ripper 101. The right roll holder 170 is provided with a mounting slot 176 in the corner between the base plate 171 and the mounting plate 175, and a mounting hole 177 near the end of the mounting plate 175. On the gripping plate 173 a right handle 174 is provided having its elongate direction extending perpendicular to the elongate direction of the film roll 4. The right roll holder 170 furthermore comprises three or four legs 178 that allows the film dispenser 100 to stand on the ground with the film roll 1 and the film ripper 101 straight upwards when not in use.

The left roll holder 150 and the right roll holder 170 are at one side mounted to the film ripper 101, allowing it to be elastically pushed in direction P against the windings 3 of the film roll 1 to temporarily brake its rotation.

The film ripper 101 is shown in detail in figures 1D-1G.

The film ripper 101 comprises a steel plate 102 ending with a left connector 103 and a right connector 110. The steel plate 102 has a constant thickness over its main plane, which is in this example between 2 millimeter and 5 millimeter.

The left connector 103 comprises a projection 105 to be inserted into the mounting slot 156 of the left roll holder 150, and a slotted hole 106 that is aligned with the mounting hole 156 thereof.

The film ripper 101 and the left roll holder 150 are secured to each other by means of a bolt 158 having a square base inside the mounting hole 157 and the slotted hole 106, and a threaded end inside a tightening knob 159. The slotted hole 106 allows the left roll holder 150 to be shifted with respect to the film ripper 101 to insert and replace the film roll 1. The right connector 110 comprises a projection 112 to be inserted into the mounting slot 176 of the right roll holder 170, and a square hole 111 that is aligned with the mounting hole 177 thereof.

The film ripper 101 and the right roll holder 170 are mounted to each other by means of a bolt 179 having a square base inside the mounting hole 177, and a threated end inside a butterfly nut 180. The steel plate 102 of the film ripper 101 forms an elongate straight front blade 115 that merges over a straight first fold 116 along a straight line L into an elongate straight back blade 117. As shown in figure 1G, the blades 115, 117 are under a sharp angle Q to each other to form a V-configuration, which angle is between 10 and 90 degrees, preferably between 20 and 80 degrees.

The first fold 116 has a fluent curvature with a circular or parabolic section at the apex.

The blades 115, 117 are in this example provided with a series of identical cutting holes 120 that are symmetrical with respect to the first fold 116 and that are in this example equally distributed along the first fold 116. The cutting holes 120 are formed in the steel plate 102 before the first fold 116 is made to define the front blade 115 and the back blade 117. As shown in figure 1B, the film ripper 101 is at the side facing the film roll 1 extended with a flexible flap 114 that is directed towards the film roll 1 to prevent that the end of the film 4, which is the beginning for a new packaging cycle, sticks onto itself after ripping.

In this example the flexible flap 114 clamps onto a mounting edge 118 as shown in figure 1G that extends along the back blade 117 and under an angle thereto.

The flexible flap 114 may also clamp onto the back blade itself when the mounting edge 118 is not present. As best shown in figure 1F, the cutting holes 120 comprise opposite first parabolically curved edges 121 having their first curved apexes 123 at the apex of the first fold 116. The first apexes 123 face each other symmetrically. The height A of the first edges 121 between the first apex 123 and the bases 124 is about the same as the distance B between the facing first apexes 123. The cutting holes 120 comprise opposite second parabolically curved edges 122 having their curved apexes 125 located on opposite sides of the first fold 116. The second apexes 125 face each other. Before folding, the distance D between the facing first apexes 125 is about the same as distance B between the facing second apexes 123. Due to the folding, the first apexes 123 bent slightly upwards from the straight first fold 116.

The film dispenser 100 is used to manually place a large amount of film 4 from multiple windings 3 around an object to be sealed, such as a pallet with a stack of products. The film dispenser 100 is taken with both hands at the left handle 154 and the right handle 174 and taken from the ground. The end 5 of the film 4 is attached to the object and the user walks around it. When the object is sealed, the film 4 is placed against the film ripper 101 along the first fold 116 by further pulling at the film dispenser 1 while the left roll holder 150 and the right roll holder 170 are temporarily pushed in direction P towards each other to prevent further rotation of the film roll 1. The film 4 locally stretches and starts entering the cutting holes 120, while kept in place by the upwardly projecting first apexes 123. In this manner the film 4 cannot slide anymore in the lengthwise direction of the film ripper 101. When the film dispenser 100 is subsequently moved sideways at one of the handles 154, 174, the film 4 further enters the cutting holes 120 while it ruptures between the cutting holes 120 at the first fold 116. Hereby the upwardly projecting first apexes 123 start puncturing the film 4, whereby the film 4 is ripped off over its full width along the film ripper 101. The thus new formed end 5 of the film 4 is stuck between the first apexes 123 of the cutting holes 120. The stuck end 5 can easily be taken out again manually by stroking with the fingers over the blades 115, 117 towards the first fold 116. The film dispenser 100 is then ready for sealing another object. The blades 115, 117 with the cutting holes 120 ensure that the film 4 is ripped off orderly, while on the other hand it is safe to hit the film ripper 101 as the blades 115, 117 are smooth themselves. Figure 2 shows a film dispenser 200 according to a second embodiment of the invention. Components corresponding to the components of the film dispenser 100 according to the first embodiment are provided with the same reference numbers. Only the differentiating components are hereafter discussed. The film dispenser 200 comprises a left roll holder 250 with a gripping plate 253 that projects outwards from the film roll 4 in the elongate direction thereof. The left film holder 250 comprises a left handle 254 having its elongate direction extending obliquely to the elongate direction of the film roll 4. This enables the film dispenser 200 to be carried and handled manually while kept low above the ground. Figure 3 shows a film dispenser 300 according to a third embodiment of the invention. Components corresponding to the components of the film dispenser 100 according to the first embodiment are provided with the same reference numbers. Only the differentiating components are hereafter discussed. The film dispenser 300 comprises a right roll holder 370 with a gripping plate 373 and a right handle 374 that are is symmetrical to the left roll holder

150. This enables the film dispenser 300 to be carried and handled manually at about the height of the breast. Figures 4A and 4B show a film dispenser 400 according to a fourth embodiment of the invention.

Components corresponding to the components of the film dispenser 100 according to the first embodiment are provided with the same reference numbers. Only the differentiating components are hereafter discussed. The film dispenser 400 comprises a right roll holder 470 having a bend bracket 473 with a U-shaped section 472 that is at one end connected to a stem 478 that extends through the cardboard core 2 of the film roll 1, and that at the other end continues into a right handle 474 which extends over the film roll 1. The right roll holder 470 furthermore comprises a base plate 471 with a circular hole for the cardboard core 2, which is extended by two end lips 479 that are confined between the parallel legs of the U-shaped section 472. The film dispenser 400 comprises a right roll holder 450 having a base plate 451 with a circular hole 452 for the cardboard core 2, a lock disk 460 to enclose the cardboard core 2, and a left handle 454 that is slid over the stem 478.

The bend bracket 473 forming the right handle 474 at one side, and the stem 478 with the left handle 454 at the other side, may be a film dispenser that is known per se in the art. The film ripper 101 may be provided as retrofit provision, wherein subsequently the base plate 471 is slid over the stem 478 to bring the end lips 479 within the U-shaped section, the film roll 1 is slid over the stem 478 to enter the circular hole of the base plate 471, the right roll holder 450 is installed by sliding the base plate 451 over the stem, and the lock disk 460 and the left handle 454 are installed. The confined end lips 479 ensure that, the film ripper 101 extends about the opposite side of the right handle 474 with respect to the film roll 1, with the fist fold 116 facing the right handle 474. The position of the film ripper 101 is such that the first fold 116 remains spaced apart from the film 4 when the film dispenser 400 is pulled around the object to be sealed. Figures 5A and 5B show a film dispenser 500 according to a fifth embodiment of the invention. The box-

shaped film dispenser 500 is made by folding a cardboard blank 590 as shown in figures 5C and 5D. The film dispenser 500 comprises a straight front blade 615 that merges over a straight first fold 616 into a straight back blade 617 to form a film ripper 601. At the opposite side the back blade 617 merges over a straight second fold 618 into a cover panel 619 having a slightly toothed or undulating upper edge 625.

As best shown in figures 5A and 5C, the blades 615, 617 are provided with a series of cutting holes 660, 661, 662 that are symmetrical with respect to the first fold 616. In this example the blades 615, 617 comprise first series of cutting holes 660 and symmetrically opposite second series of cutting holes 661 each having a third cutting hole 662 in between. As shown in detail in figure 5D for the first cutting holes 660 only, all the cutting holes 660, 661, 662 comprise straight first edges 669 that are obliquely oriented with respect Lo the first fold 616. The first cutting holes 660 and the second cutting holes 661 furthermore comprises straight second edges 667 that are spaced apart from the first edges 669 and that are obliquely oriented with respect to the first fold 616 to form a sharp end point 670. The first edges 669 and the second edges 667 are connected to each other by means of third edges 668 that extend parallel to the first fold 616. The cutting holes 660, 661, 662 define series of first cutters 665 and second cutters 666 each having their sharp points 670 directed in the same direction towards the center of the first fold 616 or directed away therefrom. The film dispenser 500 comprises on each side an inner base plate 630 that is connected to the back blade 617 via a straight third fold 638, and an outer base plate 632 that is connected to the front blade 615 via a straight fourth fold 638. The inner base plates 630 and the outer base plates 632 are connected to each other via a straight fifth fold 635 that is under an angle with the first fold

616. The inner base plates 630 and the outer base plates

632 are provided with circular holes 631, 633 that are symmetrically located with respect to the fifth fold 635 and the transition point to the first fold 616. At the side opposite to the front blade 615, the film dispenser 500 comprises a wire 695 that keep the outer base plates 632 parallel to each other to enclose the film roll 1. The wire 695 may be a steel wire, a rigid plastic wire or an elastic wire or band. The base plates 630, 632 may be pushed towards each other manually to temporarily brake the rotation of the film roll 1.

The film dispenser 500 comprises a first locking plate 621 that is connected to the inner blade 615 via a straight sixth fold 620. Along the opposite side the first locking plate 621 continues into a series of locking lips 622 via shorter straight seventh folds 623. The outer base plates 632 are continued into second locking plates 641 via straight eighth folds 640. The eighth folds 640 are provided with first locking slots 642 to receive a locking protrusion 645 of the inner base plate 630. The second locking plates 641 and the second folds 618 are provided with second locking slots 643 and third locking slots 624 that come straight above each other to receive the seventh folds 623 after the wider locking lips 622 are fed through them. All the folds 616, 618, 620, 635, 638, 639, 640 of the cardboard blank 590 are predefined folding lines in the cardboard. The folding lines are predefined by local impression of the cardboard for example. Figure 5E shows the cardboard blank 590 when it is partly folded to the film dispenser 500. The cover panel 619 is folded upwards in direction E against the inner blade 617. The outer blade 615 is folded downwards in direction F towards the inner blade 617, whereby at the same time the outer base plate 632 and the inner base plate 630 move together with their common fifth fold 635 in direction G until the inner base plates 630 hit the cover panel 619 while the outer base plates 632 come parallel to the inner base plates 630. In this motion the cardboard core 2 is inserted in the aligned circular holes 631, 633 and the cover plate 619 comes in abutment with the film roll 1. Subseguently the insertion is confined by installing the wire 695. The second locking plates 641 are folded upwards in direction H against the second fold 618, wherein the locking protrusions 645 enter the first locking slots 642. Finally the first locking plate 621 is folded upwards in direction J, wherein the locking lips 622 enter the aligned second locking slots 643 and third locking slots 624. Thereby the first locking plate 621 keeps the front blade 615 and the back blade 617 in a V-configuration under before-mentioned sharp angle Q between 20 and 90 degrees. The shape of the cutting holes 120 of the film ripper 101 of the film dispensers 100, 200, 300, 400 of first to fourth embodiment may be applied to the cutting holes 660, 661, 662 of the film ripper 601 of the film dispenser 500 of the fifth embodiment and vice versa. In the same manner one or more of the shapes of the cutting holes 660, 661, 662 of the film dispenser 500 of the fifth embodiment may be applied individually. Furthermore, the terms “left” and “right” are relative terms that are not limiting in distinguishing the different components. Figures 6A shows a knife 700 according to a first embodiment of the invention. The knife 700 comprises a plate 701 having an outer contour that defines a cutting blade section 702 that continues into a hand grip section

703. The cutting blade section 702 has a decorative fin 704 and a cutting edge 716 with a fluent curvature C, and the hand grip section 703 ends in the form of a fish tail 705 to give the knife 700 a decorative contour of a shark. The knife 700 comprises two hand grips 706 that are placed against both flat sides of the hand grip section 703 for comfortably handling the knife 700. The cutting blade section 702 comprises a series of identical cutting holes 720 that debouch into the cutting edge 716. The cutting edge 716 itself is blunt or not sharp enough to cut the human skin under normal use. The cutting holes 720 are bounded by opposite straight first edges 712 that taper towards the cutting edge 716, and by a straight second edge 725 that extends between the first edges locally parallel to the cutting edge 716.

Figures 6B shows a knife 800 according to a second embodiment of the invention. The parts that correspond with the knife 700 according to the first embodiment are provided with the same reference numbers.

Only the deviating parts are discussed hereafter.

The knife 800 comprises a plate 801 having an outer contour that defines the cutting blade section 702 that continues into a hand grip section 803. The hand grip section 803 has the form of a slim fish tail to give the knife 800 a decorative contour of a shark. The knife 800 comprises two hand grips 806 that are placed against both flat sides of the hand grip section 803 for comfortably handling the knife 800.

The plates 701, 801 and thereby the cutting blade sections 702 of the knifes 700, 800 are made of plastic. Alternatively the plates 701, 702 are of a metal or a cardboard. The knifes 700, 800 are suitable for use by children as the cutting edge 716 is harmless while the cutting takes place inside the cutting holes 720.

It is to be understood that the above description is included to illustrate the operation of the preferred embodiments and is not meant to limit the scope of the invention. From the above discussion, many variations will be apparent to one skilled in the art that would yet be encompassed by the scope of the present invention.

Claims

CONCLUSIONS

A film dispenser comprising a film roll having a core and a plurality of film turns around the core, a left roll holder and a right roll holder containing the ends of the core, and a film tear-off device located in parallel between the left roll holder and the right roll holder extending to the film roll, the film tear-off device comprising a sheet forming a front sheet which merges over a straight first fold into a back sheet to form a V arrangement, and a series of cutting holes extending through the first fold and into the front sheet and extend the backplate, the foil extending from the outermost turn over the first fold.

The film dispenser of claim 1, wherein the front sheet merges with the back sheet in a smooth curve with a circular or parabolic portion at the first fold.

A film dispenser according to claim 2, wherein the curvature has an outer radius equal to or greater than the thickness of the plate.

Film dispenser according to claim 2 or 3, wherein the curvature has an outer radius which is a maximum of ten times the thickness of the plate.

Foil dispenser according to any one of the preceding claims, wherein the front sheet is at an angle between 10 degrees and 120 degrees with respect to the back sheet, wherein the front sheet is preferably at an acute angle between 10 degrees and 90 degrees with respect to the back cover, and preferably at an acute angle between 20 degrees and 80 degrees to the back cover.

A film dispenser according to any one of the preceding claims, wherein the cut holes are symmetrical with respect to the first fold.

A film dispenser according to any one of the preceding claims, wherein the cut holes have first edges in the front sheet and the back sheet which are oriented obliquely to the first fold.

The film dispenser of claim 7, wherein the first edges extend from the first fold in the front sheet and the back sheet at an acute angle between 20 degrees and 80 degrees, and preferably between 30 degrees and 70 degrees.

A film dispenser according to any one of the preceding claims, wherein the first edges are directed away from the first fold.

A film dispenser according to any one of claims 7-9, wherein the first edges merge into each other at the first fold, wherein the plate at the transition of the first edges rises locally from the rest of the first fold.

The film dispenser according to any one of claims 7-10, wherein the first edges form a parabolic curve, with a apex at the first fold,

A film dispenser according to any one of claims 7-11, wherein the cut holes have two oppositely directed first edges which converge towards the first fold.

A film dispenser according to any one of claims 7-12, wherein the cut holes have second edges in the front sheet and the back sheet which merge into the first edges at a distance from the first fold.

A film dispenser according to any one of the preceding claims, wherein the cut holes have first edges in the front sheet and the back sheet oriented perpendicular to the first fold.

A film dispenser according to any one of the preceding claims, wherein the left roll holder and the right roll holder are resilient relative to the film tear-off device, the roll holders being resiliently bendable between a relaxed position in which the roll can rotate freely and a tensioned position. wherein the coil holders are engaged with the coils.

A film dispenser according to any one of the preceding claims, wherein the left roll holder and the right roll holder comprise a handle for manually holding the film dispenser with two hands.

A film dispenser according to any one of the preceding claims, wherein the plate of the film tear-off device is a metal plate, preferably a steel plate, most preferably a stainless steel plate.

A film dispenser according to any one of the preceding claims, wherein the sheet of the film tear-off device is a plastic sheet, preferably a biodegradable plastic sheet.

A film dispenser according to any one of the preceding claims, wherein the sheet of the film tear-off device is a cardboard sheet.

A film dispenser according to any one of the preceding claims, wherein the left-hand roll holder, the right-hand roll holder and the film tear-off device are folded cardboard sheet parts which form one whole in a cardboard blank.

A foil dispenser according to any one of the preceding claims, wherein the left roll holder, the right roll holder and the foil tear-off device form a cardboard box with a substantially rectangular contour.

A foil dispenser according to any one of the preceding claims, wherein the foil is a flexible foil with a thickness of less than 150 µm, preferably less than 100 µm, and most preferably less than 50 µm.

A film dispenser according to any one of the preceding claims, wherein the film is made of a resin, preferably LLDPE, LDPE or EVO.

A foil dispenser according to any one of the preceding claims, wherein the foil is made of a biodegradable plastic.

A blade comprising a plate having an outer contour defining a cutting blade, the cutting blade having a straight or curved cutting edge and a series of cutting holes recessed from the cutting edge and opening into the cutting edge.

The blade of claim 25, wherein the cutting holes are defined by opposing first edges tapering toward the cutting edge.

The blade of claim 26, wherein the cutting holes are defined by a second edge extending between the first edges.

A blade according to any one of claims 25-27, wherein the plate is a metal plate, preferably a steel plate, most preferably a stainless steel plate.

A blade according to any one of claims 25-28, wherein the plate is a plastic plate, preferably a biodegradable plastic plate.

A knife according to any one of claims 25-29, wherein the plate is a cardboard plate.

A computer-readable medium having computer-executable instructions arranged to cause the printing of a film dispenser or film tear-off device or knife according to any preceding claim.

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