EP3165477B1 - Film dispenser in a container and container for film dispenser - Google Patents

Description

The invention relates to a film dispenser and a method for providing a tangible end portion of a film strip in a film dispenser according to the features of the preamble of claims 1 and 7.

It is known to roll up film strips such as cling film to film rolls and store in containers or containers that can be used at the same time as a dispenser for pulling and separating film sections. Such dispensers widely include carton or corrugated board cartons. After removal of a Erstnutzungsschutzes the outer end portion of the rolled-up foil strip is passed through a removal opening of the container. To provide a film section, the end section is grasped, pulled out of the container to the desired length and then separated. For separating the container usually comprises a separating device such as a jagged tear-off or along a guide in the longitudinal direction of the container movable cutting blade. As a rule, the separating device is arranged on the container in such a way that it lies at a distance from the removal opening, at least when separating the withdrawn film section. This causes the new end portion of the film to separate after separation Film section protrudes a little way out of the removal opening. The end portion is thus prevented from being pulled back inside the container. An exposed section can be easily retrieved the next time you use the foil dispenser.

Depending on the design of the container, the removal opening may be e.g. be covered by a hinged lid open access side of the container. Alternatively, the removal opening may also be formed as an elongate recess on one of the container walls.

The separating device can be arranged for example on an edge of the hinged lid or one of the container walls. Alternatively, the separating device can also be arranged at a different point on the container casing, for example between two longitudinal edges on a side wall of the container.

Adhesion forces, in particular in the case of plastic films, can cause the film to adhere to the outside of the container. The adhesive properties depend on the particular film and on the surface finish of the container. This surface texture may have local differences. For example, the container surface may be completely or partially coated with a smooth lacquer layer. In particular, thin films based on polyester (PET), polypropylene (PP), polyethylene (PE) or polyvinyl chloride (PVC) adhere strongly to such surfaces. Alternative to paint or Color layers, the surface of the container may also include areas of adhesive to which a film can releasably adhere. In this way, for example, end portions of films such as aluminum foils are releasably held on the housing, which would otherwise act only very little or no attraction forces between the container surface and the film.

The attraction or holding force is desirable on the one hand because the end portion of the film is prevented from being pulled into the container interior. Also, the film is held on the container during cutting by means of a cutting knife, so that it is not pulled along by the cutting blade during cutting.

On the other hand, this attraction causes the end portion of the film to be difficult to grip with the fingers if a portion of the film is to be pulled off the roll.

From the WO2015035526A1 a foil dispenser is known with a carton, said carton comprises on the front wall a guide gap for a cutting blade, and wherein on both sides of this guide gap, an adhesive zone is formed, to which the end portion of the film releasably adhered again. In the region of the upper edge of this front wall protrudes a support tongue, which protrudes from the removal opening end portion prevents the film from abutting in the region of this support tongue on the front wall of the carton and stick there. In addition, the area between the support tongue and the guide gap is formed as a non-adherent zone. The support tongue also has the effect that there rests the end portion of the film and so can be easily taken.

The support tongue is formed as a section separated along a semicircular perforation from the adjacent part of the front wall. This section protrudes obliquely forward in its unloaded rest position on the front wall. The support tongue is at least approximately designed as an elastically resilient part of the carton. If a force acts from the front on the support tongue, it is pivoted against the elastic spring force towards the front wall. If the compressive force acting from the outside is reduced, the support tongue - driven by the elastic spring force - pivots outwards again.

The restoring force of the support tongue depends on the material used in the folding box. Since cardboard or cardboard-like materials are generally used for the production of folding cartons, the restoring force which can be achieved by the support tongue is comparatively small. As the number of pivoting cycles increases, the restoring force is additionally reduced as a result of material fatigue. The covering of the support tongue by a front flap of the Hinged lid causes the support tongue is pushed towards the front wall with the hinged lid open. This results in that the deflection angle of the support tongue in the rest position, when no force from the outside acts on the support tongue, reduced. The support tongue thus can not push the resting end portion of the film even when the hinged lid is open sufficiently far out, making it difficult to grasp this end portion. Adhesive zones, which hold the film on the outer wall of the folding box and thereby also exert a compressive force on the supporting tongue, have an analogous effect.

From the JP H04 102217 U is another sheet dispenser, according to the preamble of claim 1, known with a carton, wherein the carton comprises a box body and a hinged lid. The hinged lid includes a front flap that covers an upper portion of the front wall of the box body when the hinged lid is closed. The front flap comprises two glued layers. A recess on the inner layer is completely covered by the outer layer, so that on the inside of the front flap a groove is formed. A protruding on the front wall of the hull box tongue serves as a bar, which is present at the lid closed at the lower edge of the groove and thus holds the lid in the closed position. When you open the lid, the tongue is due to the Restricted range of motion again displaced from the groove.

An object of the present invention is to provide a film dispenser and a method for easily gripping the end portion of the film in this film dispenser.

This object is achieved by a film dispenser and by a method for providing a tangible end section of a film according to the features of patent claims 1 and 7.

A film dispenser according to the invention comprises a container in the form of a folding box with a hinged lid, in which a rolled-up foil strip is mounted. Preferably, the container is an economically producible folding box. An end portion of the film strip is guided by a removal opening of the container to the outside. This removal opening may be, in particular in the case of a folding box, the intermediate space between a hinged lid and the housing sump to which the hinged lid is pivotably articulated.

Spaced apart from the removal opening, the container comprises a separating device, for example a serrated separating edge or a cutting blade mounted displaceably along a guide device. The container comprises between the removal opening and the separating device, a contact surface against which a pulled-out film section, when using the separator of remaining film supply is separated. In the region of this contact surface, a support element is arranged to be movable so that its supernatant height projecting beyond the contact surface is variable. It acts as a spacer which keeps the end section of the film in this area at a distance from the contact surface. This distance corresponds to the respective projecting height of the support element and has the purpose that the film can be better taken at this point to pull a film section of the film roll. According to the invention, the container comprises an actuating element with which a deflection force can be exerted on the supporting element in order to move it into a position with a greater projection height. This is particularly advantageous when the elastic deflection force of the support element decreases or is too small to keep the Folienendabschnitt in sufficient distance from the contact surface. The supernatant height can also be reduced by other effects such as by the bearing force with which the film and / or a portion of a hinged lid presses the support element in the direction of the contact surface.

In the invention, the container is designed as a folding box, wherein the support element is a support tongue projecting forward on the contact surface, and wherein the actuating element comprises a corresponding recess with this support tongue on a hinged lid and / or on this hinged lid inwardly outstanding paragraph. To pull out a film section from such a container, the hinged lid is opened first. Since the support tongue and the lower edge of the recess engage behind, hooks the support tongue at this lower edge and is taken when opening the hinged lid and swung upwards or outwards. The same applies to actuators in the form of paragraphs that protrude inward on a front flap of the hinged lid.

In addition to cartons, preferably made of cardboard or Corrugated board are made, the invention also includes Dispensers or containers made of other materials such as plastic or metal or of a composite material.

Alternatively, the container could also comprise two or more support elements which are distributed over the length of the contact surface, wherein a corresponding actuating element is provided for each of these support elements. Support elements preferably have the shape of semicircular support tongues, but may also have other shapes. In particular, in alternative embodiments, one or more support members could extend over longer portions or over the entire length of the contact surface. The same applies to the associated actuators. Alternatively, a common actuating element could also be arranged on the container for a plurality of supporting elements, for example in the form of a front flap which extends over the entire length of a folding box and comprises a lower edge folded inwards.

Figur 1

einen Foliendispenser mit einem geöffneten Behälter und einer darin gelagerten Folienrolle,

Figur 2

einen Stanzriss des Behälters des Foliendispensers aus Figur 1.

Based on some figures, the invention will be described in more detail below. Show

FIG. 1

a film dispenser with an opened container and a film roll stored therein,

FIG. 2

a punched tear of the container of the film dispenser FIG. 1 ,

FIG. 1 shows a film dispenser comprising an elongated container 1, in which a film roll 3 is mounted with a wound on a cylindrical core 5 plastic film strip 7. The container 1 is preferably made as a parallelepiped carton made of cardboard or corrugated cardboard, for example, cardboard with a wall thickness between about 0.5mm and 1mm. It comprises a box body with a front wall 9, a bottom 11, a rear wall 13 and two approximately square end walls 15a, 15b whose edge lengths are for example between 35mm and 70mm. The outer length L1 of the hull, for example, is in the range of 20cm to 52cm.

On the inner sides of the end walls 15a, 15b bearings 17a, 17b for rotatably supporting the core 5 are arranged. At the upper edge of the rear wall 13, a hinged lid 19 is pivoted, wherein the rear longitudinal edge of a top surface 21 of the hinged lid 19 is adjacent to the rear wall 13. This hinged lid 19 is at the in FIG. 1 shown supervision on the film dispenser open so that the interior is visible.

Adjacent to the front longitudinal edge of the top surface 21, the hinged lid 19 comprises a front flap 23 which extends at the in FIG. 1 illustrated embodiment extends over the entire length of the container 1 and at closed container 1 covers an upper portion of the front wall 9. Preferably, the carton in the original state includes a first use protection. This can for example be formed as a detachable along a perforation P strip 23a of the front flap 23, which is also connected to the bottom of the box in an analogous manner. In the presentation of the carton in FIG. 1 This strip is not visible because it has already been severed. The remaining after the separation of the strip 23a visible lower edge 25 of the front flap 23 corresponds to the perforation line P.

FIG. 2 shows a punching tear of the carton FIG. 1 in which the strip 23a is not yet separated from the front flap 23. The punched edges are shown as bold lines, folding edges as thinner lines. Broken bold lines are perforation lines P for separating contiguous areas of the carton.

At the upper edge 9a of the front wall 9, a front inner wall 10 connects. It is hinged by means of a fold F, preferably by means of two in a small mutual distance of, for example, 2mm to 5mm mutually formed folds F on the front wall 9 folded down. The front inner wall 10 is folded into the interior of the hull.

Near the lower edge 25 of the front flap 23 comprises a punched recess 27 in the form of a gap opening extending in the longitudinal direction of the carton.

In the region of the upper edge 9a, a support tongue 29 protrudes on the front wall 9 approximately in the middle of the box body. At the in FIG. 1 illustrated embodiment of the carton is the support tongue 29 a punched along a semicircular line portion of the front wall 9, which has been hinged to the upper edge 9a on the hull and hinged forward. Without additional external forces acting on the support tongue 29 forces the support tongue remains in a rest position in which it protrudes on the front wall 9 to the front or with this includes a pivot angle which is greater than 0 °. Elastic material properties as well as the region of the folding box folded back to the rear adjacent the upper edge 9a of the front wall 9 contribute to the fact that the supporting tongue 29 protrudes forward on the front wall 9 in the unloaded rest position. The support tongue 29 and / or its connection to the adjacent portion of the container 1 preferably has an elasticity or at least a residual elasticity, which causes a restoring force or a restoring torque in the direction of the rest position with a deflection of the support tongue 29 from its rest position. This has the consequence that the support tongue 29 occupies a rest position without the action of external forces, in which they by a minimum Supernatant height H protrudes at a contact surface 31 of the front wall 9. The contact surface 31 is the region of the container 1 to which a film section abuts when, after being pulled out through a removal opening of the container 1, it is separated from the film supply by means of a separating device of the film dispenser. For a film dispenser, as in FIG. 1 is shown, the removal opening, the gap between the hinged lid 19 and the front wall 9 of the carton. The separating device comprises a guide gap 33 and a cutting blade 35 displaceable along this guide gap 33. The guide gap 33 extends approximately halfway up the box body over a region of the front wall 9 which is slightly shorter than its overall length L1.

The recess 27 is arranged on the front flap 23 and aligned so that the support tongue 29 protrudes with the hinged lid 19 closed in this recess 27, such that the lower edge of the recess 27 and the edge of the support tongue 29 undercut. This should apply at least when the front flap 23 bears directly against the contact surface 31 or against an end section of the film strip 7 resting against the contact surface 31. The lower edge of the recess 27 is thus an abutment or catch 37 which opens the support tongue 29 the hinged lid 19 entrains and pivots outwards or upwards. This increases the supernatant height H the support tongue. The foil strip 7 is pulled away in the region of its front end edge at the support tongue 29 of the contact surface 31 and can be easily taken there.

The support tongue 29, which is pivotably formed on the container 1, is a special embodiment of a support element which is designed to be movable on the container 1. In alternative embodiments, this support element could also comprise a displaceably mounted on the container and / or an elastically deformable element such as a coil spring or a foam part (not shown). That surface of the support member which comes in contact with the film is preferably formed so as not to damage the film. If the support element and / or the contact surface 31 are formed in the region of the support element so that the film adheres worse there than in other areas of the contact surface 31, the film strip 7 can be gripped there more easily. This can be achieved, for example, in that the contact surface 31 comprises regions covered with a lacquer or adhesive layer, but not the region with the support tongue 29. If the support tongue 29 adheres poorly to the film, it can swing back into its rest position almost unhindered. when the hinged lid 19 is opened further and the support tongue 29 is no longer retained by the lower edge of the recess 27.

The lower edge of the recess 27 is generally an actuating element which is movably guided on the container 1 and has an operative connection to the support element. In general, the actuating element comprises a driver 37, which is designed and arranged so that it acts on the support element in a direction of action when moving the actuating element or exerts a force in the direction of action on the support element, that its supernatant height H increases with respect to the contact surface 31 becomes.

At the in FIG. 1 illustrated embodiment of the film dispenser is the actuating element of the hinged lid 19 itself, wherein the lower edge of the recess 27 of the driver 37 is or acts as such. In addition to the lower edge of a recess 27, the driver 37 may also include an outstanding on the inside of the front flap 23 paragraph which engages behind the hinged lid 19 at the edge of the support tongue 29 protruding at the contact surface 31 (not shown). In particular, the recess 27 on the front flap 23, for example, two T-shaped incisions or include a corresponding punching, in which the two exposed triangular sections are bent back as a driver or folded (not shown). Alternatively, the front flap 23 in the region of its lower edge 25 of the front flap 23 in the Cross-section V-shaped folded back strip, which engages the support tongue 29 with a closed hinged lid 19 like a hook (not shown).

Depending on the configuration of the container 1, the front flap 23 can extend over the entire length L1 of the container 1 or alternatively only in a section of the front flap 23 corresponding to the supporting tongue 29. Instead of just one supporting tongue 29, the container 1 can comprise a plurality of supporting elements which distribute are arranged over the length of the container 1. Of course, this also applies to the corresponding driver 37 of the actuating element.

In alternative embodiments of the film dispenser, the container 1 may also be formed in another way. In particular, the container 1 may be formed without hinged lid 19 and / or include a separate removal opening for pulling out the film strip 7, for example, an exit slit on the front wall 9, the rear wall 13 or the top surface 21. Also, the separator may be formed in other ways and For example, a tear-off edge with cutting teeth or a cutting device with a fastened to the carton guide rail (not shown) and along this guide rail slidable cutting blade 35. The separator can, for example, in the area Longitudinal edge of the container may be arranged. In particular, the separating device can also be plugged onto an upper edge of a box body (not shown).

Claims (7)

1. A film dispenser comprising a container (1) in which a film tape (7), rolled up on a core (5) to form a film roll (3), is stored, wherein the container (1) comprises a retrieval opening for pulling out an end portion of the film tape (7), and a separating device, spaced apart from said retrieval opening, for severing a pulled-out end portion of the film tape (7), wherein a support element protrudes on a contact face (31) of the container (1), which is arranged between the retrieval opening and the separating device, said support element is movable such that its projecting height (H) in relation to the contact face (31) is variable, wherein the container (1) is configured as a folded box having a flap lid (19), the retrieval opening is an intermediate space between the flap lid (19) and a front wall (9) of the folded box, the support element is a support tongue (29) which is articulated so as to be pivotable on the front wall (9), wherein the container (1) comprises an actuation element which is movable relative to the support element and which interacts with the support element in the form of the flap lid with an entrainment member (37), wherein the entrainment member (37) of the actuation element is configured on a front tab (23) of the flap lid (19) that overlaps the support tongue (29) when the flap lid (19) is closed, characterised in that the entrainment member comprises a recess (27) on the front tab (23) into which the support tongue (29) projects when the flap lid (19) is closed, wherein an edge portion of the front tab (23) which delimits the recess (27) and the edge of the support tongue (29) undercut in such a manner that the entrainment member (37), by exerting a deflection force on the support element, increases the projecting height (H) thereof in relation to the contact face (31) when the flap lid is opened such that an end portion of the film can be more easily grasped.
2. The film dispenser according to Claim 1, characterised in that the entrainment member (37) comprises at least one offset that protrudes on the internal side of the front tab (23), which offset engages the edge of the support tongue (29) when the flap lid (19) is closed in such a manner that the entrainment member (37) increases the projecting height (H) of the support element in relation to the contact face (31) by exerting a deflection force on said support element when the flap lid is opened such that an end portion of the film can be grasped more easily there.
3. The film dispenser according to Claim 2, characterised in that said offset is a punched and folded-over lobe of the front tab (23).
4. The film dispenser according to any one of Claims 1 to 3, characterised in that at least a part of the contact face (31) is configured as an adhesive zone having an adhesive layer.
5. The film dispenser according to Claim 4, characterised in that the support tongue (29) and/or a region of the contact face (31) that is contiguous with the support tongue (29) is/are not configured as an adhesive zone.
6. The film dispenser according to any one of Claims 1 to 5 characterised in that the support tongue (29) is configured to be elastically resilient and in a non-stressed rest position has a positive projecting height (H) in relation to the contact face (31).
7. A method for providing a grippable end portion of a film tape (7) in a film dispenser according to Claim 1, characterised in that the actuation element is moved in an effective direction, the entrainment member (37) of the actuation element is thereby brought to bear on the support element and exerts a force in the effective direction on the support element, the support element moves by virtue of said force such that its projecting height (H) in relation to the contact face (31) is increased, resulting in a distance of the end portion of the film tape (7) from the contact face (31) in the region of the support element also increasing such that the film tape (7) is more readily grippable.

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