WO2019121002A1

WO2019121002A1 - Lightweight package

Info

Publication number: WO2019121002A1
Application number: PCT/EP2018/083596
Authority: WO
Inventors: Heinrich Gers-Barlag; Sabrina STEFFEN-REHKOPF; Sabrina STIEGLER; Sm Sahedul ABEDIN
Original assignee: Beiersdorf Ag
Priority date: 2017-12-22
Filing date: 2018-12-05
Publication date: 2019-06-27
Also published as: DE102017223676A1

Abstract

The subject matter of the invention is a particularly lightweight and visually attractive packaging means for free-flowing formulations, having a film base part (2) with a depression and a closure film (3) which seals the depression and which is permanently connected to the film base part, and a welded-in pouring part (10) lying in the plane of the sealing seam and having a closure cap (7) and/or application face, wherein film base part and closure film have a different flexibility.

Description

light packaging

The invention relates to a particularly lightweight and visually appealing packaging material for flowable preparations, comprising a film base part with a recess and a sealing film sealing the depression, which is permanently connected to the film base part, a pouring-in welding part with closure cap lying in the plane of the sealing seam and / or application surface, characterized in that the film base part and sealing film have a different flexibility.

Lightweight packaging is widely known as so-called blister packaging and serves as packaging for a wide variety of materials such as tablets or the like. But also for feed for small animals such as fish or for packaging other powdered or granular materials and substances or individual items.

So-called sachets and film bags have become established in the prior art for flowable preparations in which a certain amount of flowable preparation is embedded between two film sections. This type of lightweight packaging is widely used for single doses or trial packs.

Prior to the widespread introduction of cardboard packaging (for example TetraPack®), milk was sold in so-called tubular packaging, with a sealed film tube section enclosing the liquid contents.

To provide lightweight packaging with a pour-on weld-in part is also known in the art. By way of example, only refill packs for hand soaps or other cleaning agents or energy gels for athletes are mentioned here.

Conventional lightweight packaging, however, have some disadvantages due to the films used. For example, lives the film bags for lack of rigidity own inherent stability. In order to achieve a Aufsteilbarkeit, various floor structures are known from the prior art, leading to so-called stand-up pouches.

If the lightweight packaging made of a material of higher rigidity, so the emptiness reduces, especially for higher viscosity or paste-like products.

The lightweight packaging is therefore usually arranged in a separate outer packaging, such as in a cardboard box or the like, whereby the handling of the lightweight packaging is significantly more difficult. Furthermore, the lightweight packaging is then no longer readily visible, so that is no longer recognizable how far it is still filled with stockpiled material. The invention is therefore based on the object to provide a visually appealing lightweight packaging, which has a high emptiness and can be sold without further outer packaging to the end customer.

The lightweight packaging according to the invention thus contributes to the avoidance of packaging waste and is thus consistent with global sustainability efforts.

The object is achieved by a lightweight packaging according to the features of claim 1.

A lightweight packaging according to the invention has a film base part with a depression. The recess in the film base part is covered with a sealing sealing film, which is permanently connected to the film base part by a sealing seam.

The sealing seam lies in the edge area of the lightweight packaging and, due to its 'double-layeredness', leads to a stiffening of the edge area.

Lying in the plane of the sealing seam is a pouring-Einschweißteil with closure cap arranged so that a liquid-tight and resealable container is formed. For this purpose, the film base part and the sealing film are not directly connected to one another in the area of the pouring part welded into the edge area, but enclose the pouring part weld tightly, for example by welding or gluing.

The closure cap is preferably designed as a screw cap. However, many other embodiments are known in the art which may be used as an alternative to a cap over the dispensing channel. For example, Push-pull closures, snap-on lids, flip-top closures.

The resealable pouring-in welding part enables demand-oriented, successive removal of contents. This always guarantees a hygienic handling of the lightweight packaging, even if residues of the materials should remain in the recess of the film base part. As a result, the lightweight packaging according to the invention is particularly well suited for pasty or liquid foods, pharmaceuticals and cosmetics.

If the opening of the pouring-Einschweißteils designed in such a way that it opens into an application area or this self-forms, the contents can be excellently and accurately applied to a substrate. In particular, for the application of cosmetic and / or dermatological lip care products, such as lip balm, the packaging according to the invention is outstandingly suitable.

Materials Film base / sealing film According to the invention, the film base part and the closure film have different material properties, wherein the material of the film base part has at least a higher rigidity than the material of the closure film or the material of the closure film has at least a higher flexibility than the material of the film base part.

It is particularly preferred if the closure film also has a certain elasticity, so that it is possible, by pressing in the closure film, to press it down to the film base part.

As an alternative to the use of an elastic closure film, the formation of a depression in the closure film is provided, wherein the depression is arranged opposite to the depression in the film base part.

The film base part and closure film can according to the invention consist of a plastic base material, for example polyethylene. The use of the same plastic base material for film base part and closure film has the advantage that a separation of the materials for recycling can be omitted. According to the invention, however, the plastic base material used as a film base part has a higher rigidity than the plastic base material which serves as a sealing film. For example, two different grades of polyethylene with different stiffness are used.

It is particularly advantageous if the pour-out welding part also consists of the base material of the film base part and the closure film, since this further simplifies recycling.

The rigidity / flexibility of the material can be controlled by the degree of crosslinking, chain length, etc., so that it is possible to produce the film base part and sealing film from the same plastic base material with different mechanical properties. The thickness of the films used for the film base part and sealing film also has a decisive influence on the elasticity, flexibility, stiffness or bendability.

In the context of the invention, the groups of mechanical properties which make the non-destructive deformability visible and palpable, such as, for example, elasticity, flexibility, rigidity, toughness or bendability, are summarized under flexibility or rigidity.

In particular, polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) and combinations of these materials are suitable as the plastic base material

Especially with thin films, it should be noted that they have a certain gas permeability, so that, for example, oxygen from the ambient air diffuses into the interior. In order to prevent contamination of the filling material by penetrating gas, it is advantageous to manufacture the film base part and / or sealing film from a film which has a diffusion barrier. Various films are known to the person skilled in the art, in particular films which consist of several layers of different material (laminate films). Such Laminate films may have barrier layers of aluminum, ethylene-vinyl alcohol copolymer (EVOH) or oriented polyamide (OPA).

Inventive closure films have a stiffness of the sealing film of less than 100 g / mm. Particularly preferred is a stiffness between 35 and 70 g / mm.

In particular, a sealing film with the following properties is advantageous:

Laminate of PET (12 pm), OPA (15 pm), aluminum (12 pm), PE-E (22 pm), PE (90 pm) with a stiffness / toughness 51 g / mm + - 2.5 g / mm ,

Inventive film base parts have a stiffness of more than 100 g / mm to a maximum of 2,000 g / mm

In particular, film base parts with the following properties are advantageous:

Laminate of PET (23 pm), OPA (15 pm) PE (300 pm) with a stiffness / toughness 720 g / mm + -

25.6 g / mm or

Laminate of PET (23 pm), OPA (15 pm) PE (200 pm) with a stiffness / toughness 322 g / mm + - 19.4 g / mm or

Laminate of PET (23 pm), OPA (15 pm) PE (150 pm) with a stiffness / toughness 176 g / mm + -

10.7 g / mm.

To characterize the films according to the invention, the stiffness / toughness of the films is measured under normal conditions using the Texture Analyzer TA.XT plus from Stable Micro Systems.

The material of the sealing film and the material of the film base should differ in rigidity / toughness by at least 100 g / mm.

Connection of foil base part / sealing foil

The closure film can be glued to the film base part z. B. by a heat seal plastic or preferably welded. The compound according to the invention is not non-destructively solvable, in particular not 'peelable'.

If foil base part and sealing foil and / or pouring welded part out of the same

Plastic base material are made, in particular the welding, e.g. by

Thermal welding, ultrasonic welding and pulse welding, the method of choice. The closure film is in each case permanently connected to the film base part such that the depression in the film base part is completely closed or covered by forming a permanent connection with the film base part.

The connection is preferably closed circumferentially. The depression is then preferably accessible only by destruction of the sealing film.

According to the invention it is advantageous to form the recess in the film base part before or after the connection with the pouring-Einschweißteil by deep drawing or thermoforming.

In the simplest case, however, the recess is already formed solely by the fact that the film base part is attached to the pouring-Einschweißteil and thereby creates a curvature of the film base part.

By the used in the edge region of the lightweight packaging and permanently attached pouring Einschweißteil a removal of contents is also possible repeatedly without destroying the film composite as a conventional Sachet.

Film base part and / or closure part can also be used as an information carrier. Printing and / or labeling of the film base part and / or closure part can be performed simply and safely in the manner known to the person skilled in the art.

figure description

The invention will be described below by way of example and explained by way of example with reference to FIGS. Show it:

1 shows a lightweight packaging according to the invention, view from below (FIG. 1 a), from the side (FIG. 1 b), from the rear (FIG. 1 c) and from the front (FIG. 1 d).

Fig. 2 shows a lightweight packaging according to the invention with curved film base part and curved closure film in the side view

3 shows a lightweight packaging according to the invention with a circular shape and wing cap (FIG. 3a top view, FIG. 3b perspective side view obliquely from above)

4 detail view of the wing cap from FIG. 3 (FIG. 4a top view, FIG. 4b side view, FIG. 4c oblique top view)

reference numeral

1 lightweight packaging

2 film base part with recess 2a

3 sealing film flat

3a sealing film with recess

4 edge area, sealing seam 5-free

6 pouring weld-in part

7 sealing cap

8 Sealing seam between sealing foil and pour-out weld-in part

9 Sealing seam between foil base part and pour-out weld-in part

10 removal opening

1 1 base of the cap

12 outer contour of the cap

13 handling aids of the cap

14 vertex of the cap (center of the cap)

15 outer contour of the film base part

Figures 1 a to 1 d show a lightweight packaging 1 according to the invention comprising a film base part 2 with a recess 2a for receiving the contents, for example, fat or cream from different directions. 1 a from above, FIG. 1 b from the side, perpendicular to the pouring-in welding part, FIG. 1 d with a view towards the pouring-in welding part, the cap and FIG. 1 c opposite viewing direction to FIG. 1 d)

The film base part 2 is circumferentially bounded at the side edge by a web-like edge region 4, which extend laterally outwards from the depression 2a in the main plane of the lightweight packaging.

The chamber-like depression 2a is sealed by a sealing film 3, wherein the sealing film can be made of polyethylene, for example, and is welded to the film base part made of a plastic material such as polypropylene.

To remove the filling material, a pouring-in welding part 6 is introduced into the sealing seam. The pouring-Einschweißteil has a removal openings 10, which is reversibly closed by a cap 7.

It can be seen in FIGS. 1 b and 1 d that the edge regions of the film base part and closure film run around the pouring-out welding part and are connected to it in the regions 7 and 8.

FIG. 2 shows another variant of a lightweight packaging 1 according to the invention, in which the closure film 3 has a depression 3a which lies opposite the depression 2a of the film base part 2.

Particularly advantageous is the embodiment shown in Figure 3. The lightweight packaging 1 has a circular circumference, since here the pouring-Einschweißteil 6 is designed so that completed by the patch cap 7, the film base part 2, sealing film 3 and pouring-6 welded circular segment to a full circle. For this purpose, the cap 7 has a flat, straight region which forms the base 11. The base is facing the pouring-Einschweißteil in the mounted state and rests on the pouring-Einschweißteil. The contour 12 of the cap 7 corresponds to a circular arc, which completes the circular arc 15 formed by the circumference of the film base part 2 and sealing film 3 to a full circle. For this purpose, the cap 7 carries two terminally arranged handling aids 13, which represent themselves as tapered wing structures. These handling aids 13 allow for easier removal, in particular unscrewing the cap, since they act as levers. Since the lightweight packaging according to the invention is particularly suitable for permanent entrainment in handbags or the like, it is important that an unintentional opening of the light packaging is avoided. In order to prevent the too easy twisting of a closure, from the prior art, various devices for inhibiting a rotational movement, such as to be overcome locking knobs in or on the thread pairing known.

Another advantage of the circular, lenticular shape of a lightweight packaging according to the invention is that it has neither protruding tips or edges and thus can not .verhaken 'in culture bags, bags, suitcases, glove boxes and drawers with other objects.

The lenticular expression is perceived by female consumers as handschmeflischisch and cosmetically appealing.

A lightweight packaging according to the invention has proven particularly suitable, in which the cap has the following geometry (FIG. 4):

Width (A) of the cap base is between 1 and 5 cm, preferably 1, 5 to 3 cm,

Length (B) of the cap base is 2.5 to 6 times the width (A),

Starting from the center Z, the cap base is tapered so that the width of the cap on both sides at the distance (C) is less than 10% of the width (A), wherein distance (C) is 0.8 to 1, 1 times the width (A) corresponds

Height of the cap at the apex 14 is between 30 and 90% of the maximum width (A), preferably between 60 and 75% of the maximum width (A)

optionally, the cap tapers towards the apex 14, wherein width (E) at the apex should be no greater than 30% of the width (A) at the cap base, so that the cap longitudinal section has a geometry approximating the trapezoidal shape rounded to the apex.

Claims

claims

A lightweight packaging for flowable preparations, comprising a film base part with a recess and a sealing film sealing the recess, which is permanently connected to the film base part, a lying in the plane of the sealing seam Ausgießeschweißteil with closure cap, characterized in that the film base part and sealing film a different Have flexibility / rigidity.

2. Lightweight packaging according to claim 1, characterized in that the film base part of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) and combinations of these materials.

3. Lightweight packaging according to at least one of the preceding claims, characterized in that the sealing film of polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA) and combinations of these materials.

4. Lightweight packaging according to at least one of the preceding claims, characterized in that the sealing film has a stiffness below 100 g / mm, particularly preferably has a stiffness between 35 and 70 g / mm.

5. Lightweight packaging according to at least one of the preceding claims, characterized in that the film base part has a rigidity of 100 g / mm to a maximum of 2,000 g / mm.

6. Lightweight packaging according to at least one of the preceding claims, characterized in that the closure film and / or film base part has at least one barrier layer from the group aluminum, ethylene-vinyl alcohol copolymer (EVOH) and oriented polyamide (OPA)

7. Lightweight packaging according to at least one of the preceding claims, characterized in that the film base part and sealing film consist of the same plastic base material.

8. Lightweight packaging according to at least one of the preceding claims, characterized in that the closure film has a recess which is aligned opposite the recess in the film base part.

9. Lightweight packaging according to at least one of the preceding claims, characterized in that the sealing film is not only flexible, but also elastic.

10. Lightweight packaging according to at least one of the preceding claims, characterized in that the film base part, sealing film and pouring-Einschweißteil consist of the same plastic base material.

11. Lightweight packaging according to at least one of the preceding claims, characterized in that the pouring-Einschweißteil carries a cap for closing the pouring opening and / or the pouring opening opens into an application surface and / or the pouring opening forms an application surface.

12. Lightweight packaging according to at least one of the preceding claims, characterized in that the cap has the following geometry:

Width (A) of the cap base is between 1 and 5 cm, preferably 1, 5 to 3 cm,

Length (B) of the cap base is 2.5 to 6 times the width (A),

13. Lightweight packaging according to claim 12, characterized in that the cap is tapered towards the apex 14, wherein width (E) in the apex not less than 30% of

Width (A) should be at the cap base, so that the cap longitudinal section has a geometry approximating the trapezoidal shape, wherein the transitions are rounded to the apex.

14. Lightweight packaging according to at least one of the preceding claims, characterized in that the filling material has a preparation comprising a fatty phase and a

Has water phase.

15. Lightweight packaging according to at least one of the preceding claims, characterized in that the filling material is a cosmetic and / or dermatological preparation.