EP1594761B1 - Primary packaging used as an applicator - Google Patents

Description

The invention relates to a film bag comprising at least one carrier film and at least one cover film,
wherein between the carrier film and the cover film, so the adherends, a film or sheet-like, active ingredient-containing product gas and moisture sealed - surrounded by a closed, strip-shaped joining zone - is included,
wherein the strength of the joint in the joint zone is less than the strength of the joint parts,
wherein at least one joining zone section, which is not arranged transversely to the tear-peeling direction and lies laterally next to the product, narrows at least in sections transversely to the tear-peeling direction,
wherein at least the first quarter of the non-transverse to Aufreißschälrichtung Fügezonenabschnitts has no narrowing.

Such a film bag is for example off Patent abstracts of Japan vol. 2000, no. 15, 6 April 2011 (2001-04-06 ) - & JP 2000, 335574, A , (Fujimori Kogyo co Itd), December 5, 2000 (2000-12-05).

From the DE 101 59 746 Such a film bag is known as primary packaging. This foil bag also serves to store foil or sheet-like products. However, here the film bags are stored stacked in a secondary packaging. The provision of the foil or sheet-like products takes place via a hand-operated mechanism integrated in the secondary packaging. If one were to open a single film bag simply by tearing it open - ie without the aid of the secondary packaging - the packaged product would largely uncontrollably detach from the parts of the film bag. As a result, it would then be necessary to grasp the product by gripping it in order to subsequently apply it to the respective destination.

Especially in the field of veterinary medicine, surface pharmaceutical forms, such as mucoadhesive systems are applied to a tissue surface such as the mucosa. Here, the user should avoid direct skin contact with the appropriate drug form, since under certain circumstances, the integrated there, often highly potent agents represent a danger for him. Here you usually have to work with gloves. But this seems complex and uncomfortable under certain user-related aspects.

The present invention is therefore based on the problem to develop a film bag for film or sheet-like products, which makes the use of aids such as gloves, tweezers or the like for the application of drug-containing systems superfluous.

This problem is solved with the features of the main claim. For this purpose, the joining zone section has one or two inwardly oriented notches.

In this primary packaging, a two-dimensional dosage form or the product is enclosed between two films, wherein the closure-like joining zone between the films is designed, for example, by a peeling movement rupturable. The joining zone has a widening or narrowing or a combination of these width changes in a region located behind the front edge and in front of the rear edge of the packaged dosage form. This change in width represents a disruption during the rupturing peeling motion in the form of an at least short-term change in rupture force requirement. Because of this perturbation, the user recognizes that he or she ripped the package one-third, one-half, or two-thirds, depending on the location of the width change Has.

For application, the partially torn-open package will now be attached to the not yet torn portion, e.g. held between thumb and forefinger. In this case, for example, the peeled cover film area lies folded back on the untapped packaging part region. The thumb presses him against the still closed packaging section. With the exposed product area in advance, the film bag is brought to the point of the recipient to be applied. After a first contact with this point, the foil bag is pressed. Here, the index finger tip presses the exposed product area against the application site via the substantially uncut carrier film. Due to the immediate adhesion of the product at this point, the product remains at the intended location when the film bag that is being emptied is removed.

Of course, even when the pressed film bag, the cover sheet can be completely removed before the now torn over the entire length of the film bag is removed.

In both cases, the user's forefinger pressing the product onto the application site does not come into contact with the product.

Figur 1:

Folientasche im Längsschnitt;

Figur 2:

Draufsicht zu Figur 1 ohne Deckfolie;

Figur 3:

halbe Draufsicht ohne Deckfolie, aber mit weitgehend gleichbreiter Fügezone;

Figur 4:

wie Figur 3, aber mit anderem Fügezonenverlauf;

Figur 5:

wie Figur 3, aber mit abschnittsweise längerer Fügezonenverbreiterung;

Figur 6:

wie Figur 3, aber mit nicht abgewinkelter Verbreiterung;

Figur 7:

wie Figur 6, aber mit mindestens einer Zusatzfügezone;

Figur 8:

wie Figur 7, aber mit mindestens einer langgestreckten Zusatzfügezone;

Figur 9:

Fügezone mit äußerer Kerbe als Verschmälerung;

Figur 10:

Fügezone mit mindestens einer inneren Kerbe;

Figur 11:

Fügezone mit einer Ausnehmung.

Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments.

FIG. 1:

Foil pocket in longitudinal section;

FIG. 2:

Top view to FIG. 1 without cover sheet;

FIG. 3:

half plan view without cover sheet, but with largely uniform width joint zone;

FIG. 4:

as FIG. 3 but with different joining zone course;

FIG. 5:

as FIG. 3 but with sections of longer joint widening;

FIG. 6:

as FIG. 3 but with non-angled broadening;

FIG. 7:

as FIG. 6 but with at least one additional joining zone;

FIG. 8:

as FIG. 7 but with at least one elongate additional joining zone;

FIG. 9:

Joining zone with outer notch as narrowing;

FIG. 10:

Joining zone with at least one inner notch;

FIG. 11:

Joining zone with a recess.

In the following embodiments according to Figures 1 to 8 is a prior art, which facilitates the understanding of the invention.

FIG. 10 shows a film pocket according to the invention with a joining zone with at least one inner notch.

The Figures 1 and 2 show a foil bag (10) with an inserted foil or sheet-like product (1). The latter is, for example, a film which may contain a pharmaceutically active substance, eg a selective analgesic. The film bag (10) is also referred to as primary packaging.

The film bag (10) consists for example of two films, between which the film-like product (1) is inserted over the entire surface. Around the film (1), the two foils (11, 12) are glued, sealed, welded or the like at a small distance from the edges of the film. The film (1) is therefore in a gas and moisture-proof cavity. In the exemplary embodiment, for reasons of simplification, the foils (11, 12) are connected to one another only by way of example by means of an applied adhesive (13).

The materials from which the film bag parts are made are, for example, polyethylene (PE), polyethylene terephthalate (PET), fluorinated hydrocarbons such as Aclar, polypropylene (PP), OPA, polyacrylate (PA), EVOH, ethylene vinyl acetate copolymers (EVA), EC, Barex, Surlyn, paper, aluminum and related combinations of these substances. These and similar substances are u.a. used for sealed bags and blister packs. In order to facilitate the application by optical control, the films may be at least partially transparent.

The films (11) or (12) can also be constructed in each case as composite materials from two or more layers of the materials mentioned and, if appropriate, further materials.

The carrier film (11) is a substantially rectangular film whose length corresponds to, for example, twice its width. In the Figures 2-11 the support film (11) is widened on both sides by approximately the width of the adhesive strip. On the carrier film (11), the film (1) is placed. Around the film (1) around the carrier film (11) is printed eg strip-shaped with adhesive (13). The adhesive (13) does not come into contact with the film (1). On the film (1) and the adhesive (13) is the cover sheet (12) - in FIG. 2 shown in dashed lines - laid down firmly. The strength of the connection in the joining zone (30) is always smaller than the strength of the joining parts (11, 12), so that the film pocket (10) tears exclusively controllable along the joining zone (30) during opening.

The cover film (12) here has the same width dimensions as the carrier film (11). However, it is shorter. Your For example, semi-elliptical leading edge (27) is offset to the rear, for example, by a few millimeters. Between the front edge (27) and the front portion (31) of the adhesive (13) is about a third of the length of a gap space (21), see. FIG. 1 , In this area, the films (11, 12) do not adhere to each other.

Alternatively to the one in the FIG. 1 film bag (10) shown, the primary packaging may also consist of films which have a recess in the contact area with the filling (1). Even a depression in only one of the slides is conceivable. The corresponding foil is designed as a deep-drawn blister base. In both cases, then the edge regions of the films are in spite of the inserted product (1) over the entire surface on each other, so that the height of the gap space (21) is almost infinitely small.

In a further alternative, the carrier film (11) and the cover film (12) consist of a strip which is folded together during packaging of the product (1) such that a sealing or bonding takes place at the rear film edge.

The geometric outer contour of the film pocket (10), inter alia specified by the edges (15-17), cf. FIG. 2 , is only an example largely rectangular. Of course, the film bag (10) in the plan view also have a polygonal, round, elliptical, oval or any other conceivable contour, provided that it is suitable for separating the films (11, 12) by a Aufreißschälbewegung.

In order not to get into danger when tearing the film bag (10), ie the mechanical removal of the cover film (12) from the carrier film (11), both films (11, 12) with a jerk - under the uncontrolled detachment of the packaged product (1) -, after at least a quarter of the product length, for example, on both sides of the product (1), the adhesion between the films is increased dramatically. For this purpose, the joining zone (30) is broadened at least in regions. The Figures 2-8 show different ways of broadening.

In the FIG. 2 a joining zone (30) is shown in plan view. It encloses - as well as the joining zones of the others Figures 3-11 completely the product. The joining zone (30) here consists of a front (31), a rear (32) and four lateral joining zone sections (33, 34, 43, 44). The sections (33, 34, 43, 44) are here parallel to the Aufreißschälrichtung (9), while the sections (31) and (32) extend transversely to this direction. The sections (31-33, 43) have a constant width of, for example, about 3 mm. Depending on the size and type of film pocket and the type of connection between the films (11, 12), the width can vary between 1 and 10 mm.

The sections (34) and (44) have after FIG. 2 compared to the sections (31-33, 43) twice the width. About half the length of the product (1), the joining zone (30) in the central region (29) at the spacers (35) and (45) changes the width on both sides. At the points (35) and (45) increases when tearing the film bag (10) the required tearing force in the example shown abruptly to at least twice the value. In sections (33) and (43), for example, the required tearing force at the given geometrical dimensions is about 0.4 N. This value increases in sections (34) and (44), for example to 1.4 N. This change in force is peeling off when opened manually Separation of the films (11, 12) clearly felt or felt. Instead of widening, the joining zone can also be double-sealed in order to increase the tearing force, ie, for example, a partial area of the joining zone is sealed twice or more times. When gluing the films (11) and (12) can be used within the joining zone partially another adhesive with higher bond strength.

The broadening of the sections (34) and (44) extends transversely to the tear direction (9) to the outside. The outer transition from the section (33, 43) to the section (34, 44) via a chamfer (46). The chamfer (46) widening towards the end of the film bag (10) includes a 60 ° angle with the tear-open direction (9). Possibly. For example, the outer transition may be staircase-shaped to achieve a stepped increase in the required tearing force. Dashed line (47) between the sections (33, 43) and (34, 44).

In the Figures 3-11 the film pockets are only half-sided.

The FIGS. 3 and 4 show film pockets (10) with joining zones (30), which have over their entire extent an at least almost constant average width (DB). Between the sections (33) and (34) there is a double bend (35) which has a width (B) transversely to the tear direction (9). Parallel to the tearing direction, it has a length (L). The length (L) corresponds to the average width of the joining zone (30). For example, the double bend (35) is designed so that the section (34) is offset from the section (33) by the average width (DB). This offset can also between half and three times the average width (DB).

In the FIG. 3 the sections (33, 34) are offset parallel to each other while at FIG. 4 include an acute angle.

In FIG. 5 a joining zone (30) is shown, whose double bend (36) has a length (L) which is greater than the average width (DB). Here, for example, the length (L) corresponds to twice the average width (DB).

The Figures 6-11 show joining zones (30), which surrounds the product (1) - without double angulation (35) - as a substantially rectangular frame in the embodiment. To FIG. 6 is the joining zone (30) in the central region (29), cf. FIG. 2 , widened between sections (33, 34). The broadening (37) projects, for example, at a right angle and web-shaped outwards over the outer edge of the sections (33, 34). The supernatant here corresponds, for example, the average width (DB). Of course, the broadening (37) can also extend inwards towards the product. The broadening can also extend on both sides of the edges of the sections (33, 34), for example like a circular broadening located in the middle (29) in the region (29), whose diameter corresponds, for example, to twice the average width (DB).

In the FIGS. 7 and 8 the widenings are designed as additional joining zones (38) and (39). According to FIG. 7 is the Zusatzfügezone (38), for example, a circular area with a diameter corresponding to the average width (DB). She is in middle area (29), cf. FIG. 2 , arranged outside the joining zone (30). The minimum distance between the joining zone (30) and the circular additional joining surface (38) is one fifth of the average width (DB). The sum of the widths (B1) and (B2) represents the total broadening.

Of course, the Zusatzfügezone (38, 39) can be prepared by a different method than the regular joint zone (30). For example, the joining zone (30) produced by sealing, while the Zusatzfügezonen (38, 39) caused by the application of a physically or chemically setting adhesive.

In the tear-open direction (9) or at least approximately in this direction, a plurality of equal or non-uniform additional joining zones (40) can also be arranged, see FIG. 7 , There is shown as a further Zusatzfügezone a dashed, unshaded circle (40). When tearing a film bag (10) with two mutually separate Zusatzfügezonen (38) and (40) the tearing also feels a jerk, which is caused by the momentary release of the tearing force in the gap (48) between the two Zusatzfügezonen (38, 40). The gap (48) has, for example, a minimum length which corresponds to half the average width (DB).

FIG. 8 shows as Zusatzfügezone (39) an adhesive or sealing strip, for example, as a so-called double seal parallel to the section (34) is oriented. The distance between the section (34) and the additional joining zone (39) is one fifth of the average width (DB). In another variant of the solution, for example, in addition to the surface (39) or the Section (34), for example, a shorter Zusatzfügezone (41) are arranged.

The Figures 9-11 show joining zones (30), in which the conscious disturbance during the tearing process is caused by a reduction of the joining zone width. In FIG. 9 the narrowing is generated by a notch (55). The notch (55), which protrudes into the joining zone (30) from the outside, has, for example, an approximately semicircular groove bottom and two flanks leading away from the notch base in a V-shape. In the region of the notch (55), the joining zone (30) is reduced, for example, to one quarter of the average width (DB).

at FIG. 10 There is an inwardly oriented notch (56) in the illustrated area. The latter, for example, has straight flanks which are oriented transversely to the tear direction (9).

In FIG. 11 a joining zone (30) is shown in which the narrowing is produced by a recess (58). The recess (58), for example, has the shape of a slot, has a length corresponding to, for example, the average width (DB). The width of the slot is chosen so that the local residual width of the joint zone (30) is about 50% of the average width.

LIST OF REFERENCE NUMBERS

1

foil or sheet-like product, film

9

Aufreißschälrichtung

10

Foil bag, primary packaging

11

Carrier film, parts to be joined

12

Cover film, parts to be joined

13

adhesive

14

front section of (13)

15, 16

Side edges of (11)

17

Leading edge of (11)

21

gap

27

Leading edge of (12)

28

Cover foil in peeling position

29

middle area

30

Joining zone, adhesive surface, sealing surface Sealing seam

31

Joining zone section, front, transverse to (9)

32

Joining zone section, rear, transverse to (9)

33

Joining zone section, front, not transverse to (9)

34

Joining zone section, rear, not transverse to (9)

35

Widening, double bending

36

Widening, long

37

Broadening, cantilevered, overlapping

38

Additional joining zone, short and possibly multi-part

39

Additional joining zone, long

40

Additional joining zone, circular

41

Additional joining zone, medium length

43

Joining zone section, front, not transverse to (9)

44

Joining zone section, rear, not transverse to (9)

45

Widening, double bending

46, 47

Broadening contour, contour

48

gap

51

back edge of (36)

55

Narrowing, from the outside; score

56, 57

Narrowing, from the inside; score

58

Narrowing, enclosed by joining zone recess

B, B1

Width of the joining zone

B2

Width of the additional joining zone

DB

Average width of the joining zone

L

Length of the broadening

L1, L2

Lengths with several widenings

T

Depth of narrowing measured across (9)

Claims (5)

1. Foil pocket (10) comprising at least one carrier foil (11) and at least one covering foil (12),

   - a foil or sheet product (1) containing an active ingredient being enclosed in a gas-tight and moisture-tight manner, surrounded by a closed, rectangular joining zone (30) between the carrier foil (11) and the covering foil (12), i.e. the joined parts,

   - the strength of the connection in the joining zone (30) being lower than the strength of the joined parts (11, 12),

   - at least one joining-zone section (33, 34; 43, 44), which is not arranged transversely with respect to the tear-open peeling direction (9) and is located laterally beside the product (1), narrowing transversely with respect to the tear-open peeling direction (9), at least in some sections,

   - at least the first quarter of the joining-zone section (33, 43) which is not arranged transversely with respect to the tear-open peeling direction (9) having no narrowing, characterized

   - in that the joining-zone section (33, 34, 43, 44) has one or two inwardly oriented notches (56, 57).
2. Foil pocket according to Claim 1, characterized in that the narrowings (56, 57) begin at least in the central region (29) of the product (1), measured in the tear-open peeling direction (9).
3. Foil pocket according to Claim 1, characterized in that the joining zone (30) are sealing seams.
4. Foil pocket according to Claim 1, characterized in that the central third of the longitudinal extent of the product (1) is in the central region (29), in which the narrowing (56, 57) begin.
5. Foil pocket according to Claim 1, characterized in that the individual narrowing (56, 57) has a width (T) measured transversely with respect to the tear-open peeling direction (9) which is between 25 and 90% of the average width of the joining-zone sections (31-33; 43) located outside the narrowing (56, 57).

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