WO2008119573A1

WO2008119573A1 - Carrying handle, particularly for detergent packages

Info

Publication number: WO2008119573A1
Application number: PCT/EP2008/050668
Authority: WO
Inventors: Barbara Grossmann; Wolfgang Barthel
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2007-04-02
Filing date: 2008-01-22
Publication date: 2008-10-09
Also published as: ATE513488T1; EP2129256A1; EP2129256B1; DE102007016202A1

Abstract

The invention relates to a carrying handle, particularly for packaging containing a detergent or cleaning agent, wherein the carrying handle (1) is formed of at least one tube (2), and at least two tube sections (2, 4) of the tube interior positioned substantially opposite each other are fixed one against the other such that a first loop (7) and a second loop (8) opposite the first are formed on both wide ends (5, 6) of the carrying handle (1), wherein each loop surrounds a loop interior (9, 10).

Description

Strap, especially for detergent packages

The invention relates to a strap, for example for detergent carrier packages, and provided with this strap carrying package and a method for producing the carrying strap according to the invention.

State of the art

Carrying packages, especially for laundry detergents, which are sold in sales units larger than 5 kg, are today often equipped with straps to allow a comfortable carrying this comparatively large and heavy and regularly perceived as unwieldy packaging.

Usually, such straps are as an elongated strip of a flexible material, in particular plastic, formed, which is fastened via rivet joints on the support package, which is often formed from a folding blank of cardboard and / or corrugated cardboard. By the rivet connection, it is possible to rotate the strap so that it rests in a transport position on a side or jacket wall of the carrying package and can be rotated for carrying in a position above the head of the package.

However, wearing such a carrying package, in particular a larger detergent package, by means of the carrying strap is often perceived as unpleasant for several reasons.

On the one hand, because of the necessary strength properties, which prevent tearing of the belt, such belts are comparatively hard and therefore give an unpleasant grip feeling. On the other hand, the load distribution through the belt from the carried good on the user's hand is unfavorable, especially in the edge regions of the Belt and the palm form pressure peaks that lead to a constriction of the blood circulation in the hand, so that after some time of wearing an unpleasant sensation of numbness and constriction on the user's hand is noticeable.

However, in order to ensure a sufficient tensile strength of the belt, it is necessary to manufacture the belt of a material which has a sufficient hardness.

Therefore, a known from the prior art approach to improve the wearing properties of such a belt, a compromise between the hardness or the sustainability of the belt and its flexibility or feel pleasant to feel found. Such a belt is known for example from JP2003192011. The carrier belt disclosed therein is formed by extrusion of a plastic mixture consisting of 40 to 60% by weight of polypropylene and 40 to 60% by weight of a thermoplastic elastomer (TPO), wherein the extruded carrying belt is then monoaxially stretched to improve its carrying capacity. A disadvantage of this solution is that on the one hand relatively large amounts of plastic for the production of the belt are needed and on the other a satisfying, comfortable feel can not be set, as the surfaces produced according to JP2003192011, especially in the edge region of the strap regularly as yet to be felt too hard.

Another way to improve carrying handles is to make the belt multi-layered, sandwich-like, with a hard core providing the carrying capacity of the belt while a casing formed by a soft material provides a comfortable grip. Such a belt is disclosed, for example, in US4047263. A disadvantage of the soft-feel strap described in US4047263 is that it can not be produced in one production step, since the supporting hard core of the handle is encased in a second process step with the soft material and with the Core must be fixed so that the softer outer layer does not dissolve when worn from the core.

Object of the invention

The object of the invention is therefore to develop a strap, especially for detergent carrier packets, which avoids the disadvantages described above and is characterized despite a high tear resistance by a pleasant to the user feel, local pressure peaks while carrying on the user's hand as far as possible avoids and easy to manufacture.

This object is achieved according to the invention by a strap with the features of claim 1, and by a carrying package with a strap according to the invention according to claim 15 and a method for producing the carrying strap according to the invention according to claim 18.

Significant advantages of the belt according to the invention are its cost-effective production possibility and its comparatively low material requirement for receiving the corresponding load.

The tube from which the strap is formed preferably has an approximately circular cross-section. But there are also other, any cross-sectional shapes such as ellipses, rectangles, polygons, etc. conceivable.

In order to minimize the stress peaks occurring in particular at the width ends of the carrying strap while carrying a load on the carrying strap, it is advantageous that the loops have a height (H) which is greater than the height (h) of the tube sections fixed against each other on the one hand, a larger surface for distributing the forces occurring is provided and on the other hand, the enclosed loop space forms an additional spring action of the strap at the width ends, thereby occurring voltage spikes, in particular if they can jerkily occur, for example, when lifting a load on the strap, be cushioned.

In the structurally simplest embodiment variant of the carrying strap, the opposite tube sections of the tube inside abut each other, i. the inside of the hose touch each other. This can be effected for example by a simple compression of the hose.

It is particularly preferable that the opposite sections of the tube inside are cohesively, in particular by gluing or welding, fixed against each other. For example, it is conceivable first to apply a suitable adhesive to the inside of the tube and then to join the corresponding sections together in a material-locking manner by compressing the tube.

The tube from which the strap is formed, may be formed in one piece or several pieces.

In order to increase the carrying capacity of the belt, it may be advantageous for the opposing sections of the inner side of the hose to be spaced apart from one another by at least one intermediate insert in the mutually fixed state. The intermediate insert may in particular be designed as a strip-shaped element that extends in whole or in sections over the length of the carrying strap. In an alternative embodiment, the intermediate insert is designed as an inner tube inserted into the outer tube. The intermediate insert may in particular be connected by a material connection with the adjacent inner sides of the hose.

It is also conceivable to make the hose multilayer, for example by a co-extrusion process. In order to further improve the carrying capacity of the carrying strap, the intermediate insert may be formed of a material of greater Shore A hardness than the surrounding tube. Thus, the forces can be absorbed by the inner, harder material of the intermediate insert, whereas the softer, outer tube causes a comfortable grip.

It is particularly preferred to produce the intermediate insert from a monoaxially oriented polypropylene.

materials

In particular, the strap is formed flexible. In this case, flexible means in general the property of the carrying strap to be flexible or deformable. The flexibility of the carrying strap can be realized by a suitable choice of material and / or material combination and / or a suitable structural design of the carrying strap.

In particular, however, the materials of the carrying strap can not impart a feeling of comfort which is pleasant for the user due to a suitable choice of hardness, elasticity, heat capacity and surface finish. Thermoplastic elastomers or LDPE are particularly suitable as materials for the carrying strap.

In a particular embodiment of the invention, the outer tube consists of a foamed plastic. The foamed material may have an open and / or closed-cell structure. The cell size can in this case also have a gradient in order to make the grip section softer by larger cells in the outer region. By foaming, it is also possible to provide a comfortable grip, with reduced material usage. The outer tube may in particular also be designed as a "soft-feel" surface.

structures

The strap may have structures in any shape suitable for causing a local reduction in the flexural stiffness of the wearer's cross-section such that the wearer's cross-section deforms preferentially at the locations where the structures are formed on or in the strap-belt cross-section to follow the user's hand while carrying the contour and to achieve the most even pressure distribution over the strap cross section on the user's hand.

The structures may be formed, for example, as depressions, notches, joints, cracks, grooves, grooves, cuts, holes, channels, gaps, cavities, dents, indentations, depressions, openings and the like.

The structures may be oriented longitudinally on or in the strap belt surface. A significant advantage of the arrangement in the longitudinal direction is the formation of the same bending properties of the support belt cross-section profile over the entire length of the belt. The longitudinal arrangement is particularly suitable for structures such as notches, seams, scratches, grooves, grooves, channels, and the like, which structures extend in cross-section from a surface toward or away from the center of the wearer belt cross-section.

However, it is also possible that the structures are oriented substantially transversely on or in the strap. In particular, notches, cuts, gaps, indentations may extend directed from the end faces towards the center of the strap.

Multilayer construction By a multi-layer construction of the belt, it is possible to fasten the belt to the support package by rivets, without the risk that the belt breaks at the attachment point, especially when the belt is pivotally mounted on the support package by the rivet connection.

In particular, can be realized with the belt according to the invention a slot in the belt that can be performed in a riveted joint. If the material is too soft, there is a risk that the rivet will slip out of the slot guide when the belt moves along the slot due to spreading of the slot walls. Due to the multi-layer structure of the belt and the formation of the slot in the core of the belt, a spreading of the slot walls is prevented and the rivet safely guided in the slot.

The intermediate insert and the tube sections can be firmly connected to one another in a further embodiment of the invention. The connection may be formed in shape, force, and / or material fit. In particular, the connection can be made by a material bond such as gluing, hot-joining, heat sealing, welding or the like. It is very particularly preferred to bring about the connection of the intermediate insert and the tube sections during or immediately after a coextrusion.

The intermediate insert and the hose are configured in such a way that, when a load on the strap is worn properly, a convex deflection of the strap cross-sectional profile is effected at least in the grip area and thus a uniform pressure distribution on the user's hand. For the purposes of this application, a convex deflection of the carrying belt cross-section profile means a deformation of the carrying belt cross-section along a bending line, which substantially corresponds to an upwardly open parabola. According to a further preferred embodiment of the invention, the strap has an intermediate insert, which has higher strength values, in particular a higher flexural rigidity, compared to the tube surrounding the intermediate insert. A suitable parameter for determining the strength of materials in this context is the Shore A hardness. Preferably, the ratio of the Shore A hardnesses intermediate insert / tube> 1, preferably> 1, 25, more preferably> 1, 5 on.

This is particularly advantageous in order to bring about a greater wear and tear resistance of the carrying strap, since with a strap made from a one-component material that is too soft it will lead to tearing of the strap relatively quickly, in particular at the recesses necessary for a rivet connection can.

The tube from which the strap is formed is advantageously extruded. Due to this quasi-continuous production method, a very cost-efficient production of the carrying strap according to the invention, in particular with a core, is possible.

Koextrusionsherstellverfahren

Coextrusion is the continuous production process of multi-layered profiles of two different plastics, wherein the plastics heated to fluidity are ejected from two or more nozzles at the same time and shortly afterwards combined to form a multi-layered profile.

To produce different strap profiles, different slot and / or ring nozzles can be used. Traqepaket

The strap is intended especially for use with carrying packages.

Preferably, a carrying package is filled with a detergent or cleaning agent.

A carrying package in the sense of this application comprises any packaging means which is suitable for receiving a washing and / or cleaning agent and on which a handling aid in the form of a belt is pivotably arranged at two points of the packaging means. For example, a carrier package may be selected from the group of boxes, boxes, pouches, cans, bottles or barrels. In particular, a carrying package may be formed as a folding box, which form from a blank by folding a suitable container for receiving a filling material, such as Aufrichtschachteln, passage boxes, Faltbodenschachteln, Falthüllenschachteln, cartons with inner lining, belt folding boxes, Schiebefaltschachteln, Steckbodenschachteln, Stülpdeckelfaltschachteln and Aufsatzdeckelschachteln, window boxes, Cap boxes such as cover cap boxes or Rändelkappenschachteln, and Laschendeckelschachteln, hull boxes, sliding boxes, chip boxes, slip-lid boxes, carrying boxes or shipping boxes understood.

Further embodiments of the invention will be explained with reference to the accompanying drawings. It shows:

Fig.1 hose from which the strap is formed in the

Cross-sectional view

Fig.2 Hose formed into a strap in the cross-sectional view Fig. 3 hose from which the strap is formed with an im

Hose inside arranged intermediate insert in the

Cross-sectional view of FIG. 4 Hose formed into a strap with an intermediate insert in the cross-sectional view. FIG. 5 Multilayer hose from which the strap is formed in FIG

Querschnittsansicht Fig.6 Shaped to a strap, multi-layered hose in the

Cross-sectional view

reference numeral

1 strap

2 hose

3 hose section

4 hose section

5 broad end

6 broad end

7 loop

8 loop

9 loop interior

10 loop interior

11 intermediate insert

12 tube layer

13 tube layer

Fig. 1 shows a hose 2 from which the strap 1 is formed in its constructively simplest way. The tube 2 is in this figure in its original, undeformed state and has a first tube section 3, which is located in the figure at the upper end of the tube inside, and a second tube section 4, which is located in the figure at the lower end of the tube inside , on.

To form the carrying strap 1, the opposing inner tube sections 3 and 4 are brought into contact with each other, for example, by compressing the tube 2 at the corresponding areas, and connected to one another by gluing or welding. The strap 1 in its thus formed state is shown in Fig. 2.

At the two width ends 5 and 6 of the strap 1, a loop 7.8 is formed in each case, each enclosing a loop interior 9 and 10 respectively. In this case, the loop has a height H which is greater than the height h of the tube sections fixed to one another. By a suitable choice of the size of loop interior 9,10, material and material thickness of the tube 2 and loop height H, the spring action of the loop can be adjusted 7.8.

To reinforce the wearing properties of the belt 1, an intermediate insert 11 may be provided in the strap 1. This is shown by way of example in FIG. 3. Here, the intermediate insert 11 is formed as a strip-shaped element that is arranged in the undeformed, original state of the tube 2 in the interior of the tube 2, approximately centrally.

To form the carrying strap 2, as shown in FIG. 4, the opposite, inner-side tube sections 3, 4 abut on the outer surface of the intermediate insert 11 and are fixed there, preferably by means of gluing or welding. A further embodiment of the invention with a multi-layered hose 2 is shown in Figures 5 and 6. The tube 2 in this case consists of a first, outer tube layer 12 and a second, inner tube layer 13 wherein the two layers 12 and 13 are solidly connected to each other over the entire surface. The outer tube layer 12 is formed of a material that is softer than the material of the inner tube layer 13. The formation of the strap 1 is carried out in the manner already described, so that a strap 1 is formed, as shown in Fig. 6 ,

To produce the strap of the invention, a tube 2 is first formed. Subsequently, two substantially opposite hose sections 3 and 4 of the hose inner side are fixed in such a way that at the two width ends 5 and 6 of the support belt 1, a first loop 7 and one of the first opposite second loop 8 is formed, each having a loop interior 9 and 10 enclose.

For fixing, at least one of the inner tube sections 3, 4 can be coated with an adhesive before being brought together. Furthermore, an intermediate insert 11 can be arranged inside the tube 2 before joining.

Claims

claims

1. strap, in particular for a detergent or cleaning agent contained packaging means, wherein the strap (1) at least from a hose (2) is formed, characterized in that at least two substantially opposite hose sections (2,4) of the hose inside in such are fixed relative to each other, that at the two width ends (5,6) of the support belt (1), a first loop (7) and one of the first opposite second loop (8) is formed, each enclosing a loop interior (9,10).

2. Strap according to claim 1, characterized in that, the loops (7,8) have a height (H) which is greater than the height (h) of the mutually fixed hose sections (3,4)

3. strap according to one of the preceding claims, characterized in that the opposite tube sections (3,4) of the inner tube side abut each other.

4. strap according to claim 3, characterized in that the opposite portions (3,4) of the tube inside material-locking, in particular by gluing or welding, are fixed against each other.

5. Strap according to one of claims 1 to 2, characterized in that the opposing portions (3,4) of the hose inner side in the mutually fixed state of at least one intermediate insert (11) are spaced from each other.

6. strap according to claim 5, characterized in that the intermediate insert (11) is a strip-shaped element

7. strap according to claim 5, characterized in that the intermediate insert (11) is formed from a in the outer tube (2) inserted inner tube.

8. strap according to one of claims 5 to 7, characterized in that the intermediate insert (11) is formed of a material of greater Shore A hardness than the surrounding tube (2).

9. Strap according to claim 8, characterized in that the Shore A ratio of the surrounding tube (2) to the intermediate insert (11) is greater than 1, preferably greater than 1, 25, more preferably greater than 1, 5.

10. Strap according to one of claims 8 to 9, characterized in that the intermediate insert (11) consists of a monoaxially oriented polypropylene.

11.Trageriemen according to one of the preceding claims, characterized in that the hose (2) is constructed in multiple layers.

12. Carrying strap claim 11, characterized in that the hose (2) is formed by a co-extrusion process.

13. Strap according to one of the preceding claims, characterized in that the hose (2) is formed of a foamed plastic.

14. strap according to one of the preceding claims, characterized in that the hose (2) is in one piece.

15. carrying package, in particular for detergents and cleaners, comprising a bottom, a jacket, wherein the bottom and the jacket form a volume for receiving the packaged goods, in particular the washing or cleaning agent, and a fixed at two points of the carrying package strap characterized in that the strap comprises one or more features of claims 1 to 14.

16. Carrying pack according to claim 15, characterized in that the belt is pivotally attached to the support package by rivet connection.

17. Carrying pack according to claim 15, characterized in that the belt is integrally connected to the carrying package, in particular by gluing.

18. Method, in particular for producing a carrying strap according to one of claims 1 to 14, characterized in that

a. A hose (2) is formed, b. Two essentially opposite hose sections (3, 4) of the inner side of the hose are fixed in relation to one another in such a way that at the two width ends (5, 6) of the carrying belt (1) a first loop (7) and one of the first opposite second loop (8) is formed, each enclosing a loop interior (9,10).