EP1138611B1 - Individual package for storing and transporting delicate goods and method for its manufacturing - Google Patents

Abstract

A thermo-formed plastic holder comprises a vertical round cover layer supported on a rectangular base (7). The cover has a dome-shaped upper portion and a lower wall portion (3). The cover layer can be folded inwards to form supporting base for the article. Independent claims are also included for the following: (a) Method for manufacturing holder for transport of delicate goods; (b) Packaging device for delicate goods

Description

Technical field

The invention relates to a single shot for a sensitive Storage or transport goods, such as fruits, confectionery, glass objects, Electronic parts or the like with a support surface and one with the Supporting surface connected and limiting the single shot, Edge or the like., Whereby an individual part of the stored or transported goods other items is separable. The invention further relates to a Process for making such single shots.

In the packaging industry there is an increasing problem that Products sensitive to pressure, shock or even breakage (such as electrical parts, Glassware, Christmas tree decorations, but also natural items such as flowers or Fruit, confectionery and. Ä.) must be sent. Are these during the Transport or downtimes stored unfavorably and pressure exposed, it can cause damage (also faster with fruits Putrefaction), which means sensitive losses.

Although it is already known, packaging containers or inserts for To design packaging containers so that the parts to be transported be separated from each other and therefore not pressure against each other can exercise. For example, DE 2 605 367 A the features of the preamble of claim 1. However, this alone is particularly sufficient for mature or almost ripe fruit u. Ä. Not out, since this with increasing Maturity show the tendency to change at their storage locations, d. H. gradually decay.

Presentation of the invention

This is where the invention comes in. She wants the well-known single shots educate in that they are a gentler storage or a allow gentler transport. The purpose of this is to store or transport goods stay longer or safer in high quality condition. By doing A process for the production of the invention should also be related Single shots are called.

The task is solved with regard to the individual recording with the characterizing features of claim 1 and in terms of Method with the features of claim 17. Advantageous Further developments are specified in the related claims.

Among others it is intended to use inserts for packaging containers or the Bottom of packaging containers with trough-shaped receptacles for To provide individual parts of the storage or transport goods, the Images with their deepest points above the contact area or the floor level. On the other hand, the pictures reach up to to the upper end of the separating bar that delimits the respective holder or edge, which now also has the function of a retaining wall. The edge extends down to the floor level, where it is located supported. The edge (the supporting wall) can in particular be profiled (e.g. fluted).

In their free diameter, the recordings are dimensioned so that they allow the part to be stored to be inserted freely. You can for example, have the shape of a spherical cap. With accordingly It is then a small wall thickness of the contact surface (trough wall) possible that the bearing surface (wall) the bearing part largely adapts, whereby the pressure emanating from the dead weight on a can distribute larger area, which then as gently as the bearing part keeps possible or carries. The comparison with one is urgent Hammock on, at least one could now lie down instead of lying down speak of a "hanging" storage.

The manufacture of such inserts or packaging containers is in particular made of film or plate-shaped plastic Thermoforming process possible. There can be material thicknesses for that Starting material from 100 to 500 microns come into consideration. It can be done of the (bottom) plate an initially conical area to form the Retaining wall are deep drawn and adhere to it in the same way add a dome-shaped finish.

Even the conical area (retaining wall) has a small one Wall thickness similar to the base plate, and for the dome-shaped finish an even smaller wall thickness can be selected. The latter enables then pushing the dome in the opposite direction into the area of the Retaining wall to form a storage trough. The latter can already done by the manufacturer, but is also possible when filling, namely easy when inserting the stored goods.

The previously described recording is also suitable for to be reshaped one more time, namely with its central one Area (storage trough) pushed back in the opposite way be, which is a slightly smaller bearing shell to the other side results in which stored goods can in turn be used. It takes place the actual retaining wall is continued from the floor level in one towering outer wall, through which the goods are largely surrounded and like being protected in a container. A welded film can then be used for provide an upper degree.

Brief description of the drawings

Fig. 1

eine erste Ausführungsform einer erfindungsgemäßen Einzelaufnahme mit einem darin gelagerten Einzelteil (Tomate) in schematischer Schnittdarstellung,

Fig.1a

den Gegenstand von Fig. 1 in einem anderen Lagerzustand, im Schnitt,

Fig. 2

eine andere Ausführungsform einer erfindungsgemäßen Einzelaufnahme mit einem darin gelagerten Einzelteil (Pflaume) ebenfalls im Schnitt,

Fig. 3

die Ausführungsform von Fig. 1a unmittelbar nach ihrer Herstellung in Seitenansicht,

Fig. 4

den Gegenstand von Fig. 3 in Draufsicht,

Fig. 5

die Ausführungsform von Fig. 2 unmittelbar nach ihrer Herstellung in Seitenansicht,

Fig. 6

den Gegenstand von Fig. 5 nach seiner ersten Teil-Umformung, im Schnitt,

Fig. 7

eine weitere Ausführungsform in Seitenansicht,

Fig. 8

noch eine andere Ausführungsform ebenfalls in Seitenansicht,

Fig. 9

mehrere Einzelaufnahmen gemäß Fig. 1, welche zu einer Einheit, nämlich dem Boden eines Verpackungsbehälters verbunden sind, in vereinfachter perspektivischer Ansicht bzw. teilweise im Schnitt,

Fig. 9a

mehrere Einzelaufnahmen gemäß Fig. 1a, welche zu einer Einheit miteinander verbunden sind und den Boden eines Verpackungsbehälters bilden, in Seitenansicht bzw. teilweise im Schnitt, und

Fig. 10

eine spezielle Einheit aus mehreren Einzelaufnahmen gemäß Fig. 1 zur Lagerung (Stoßsicherung) eines Stielglases an mehreren Stellen (Kelch + Fuß), ebenfalls in einer schematischen Schnittdarstellung.

Further details and advantages of the invention are described below with reference to preferred exemplary embodiments, as shown in the drawings. In it show:

Fig. 1

1 shows a first embodiment of an individual recording according to the invention with an individual part (tomato) stored therein in a schematic sectional illustration,

1a

1 in another storage condition, in section,

Fig. 2

another embodiment of an individual receptacle according to the invention with an individual part (plum) stored therein, also in section

Fig. 3

the embodiment of Fig. 1a immediately after its manufacture in side view,

Fig. 4

3 in plan view,

Fig. 5

the embodiment of Fig. 2 immediately after its manufacture in side view,

Fig. 6

5 after its first partial shaping, in section,

Fig. 7

another embodiment in side view,

Fig. 8

yet another embodiment also in side view,

Fig. 9

1, which are connected to form a unit, namely the bottom of a packaging container, in a simplified perspective view or partially in section,

Fig. 9a

several individual shots according to Fig. 1a, which are connected to one another and form the bottom of a packaging container, in side view or partially in section, and

Fig. 10

a special unit from several individual shots according to FIG. 1 for the storage (shock protection) of a stemmed glass at several points (goblet + foot), also in a schematic sectional view.

1 is in an individual recording 1 according to the invention Plastic a fruit, namely a tomato used as item 2. The Individual recording 1 initially comprises an approximately square base plate 3 (cf. FIG. 4) and an edge 4 rising from it, which is circular runs around and is slightly inclined to the center. At that edge 4 closes towards the inside a bearing surface 5, which is trough-like or more specifically in this specific embodiment like a Spherical cap is formed so that it has a lowest point 6 in the central Location. That point is at a clear distance here above the floor level or footprint 7, which is rectified here with the bottom plate 3.

As can be seen, there is a smooth (smooth) transition from upper edge 4 to the bearing surface 5, in such a way that the edge 4 the Bearing surface 5 surrounds and carries or holds like a support wall, the The bearing surface 5 runs in the shape of a bowl between them. According to the schematic 1 could also be said the support surface 5 forms a recording similar to one between the peripheral edge 4 "Hammock". In any case, such a comparison can work to explain very clearly.

If one looks more closely at the part 2 used therein, it remains determine that the bearing surface 5 of the rounded item 2 in its Shape in the lower section is approximated. This stands for item 2 a much larger contact or actual contact surface Available than in the usual single shots with a more or less flat wing, where in extreme cases it is up to the point Support, i.e. a bearing with extreme surface pressure can. Especially for fruits with progressive ripening known storage quickly problematic and lossy in the result become.

The latter is to the extent for an invention Single shot 1 no longer to fear, because with this one Systematic improvement is provided in such a way that the individual parts 2 henceforth they are stored virtually hanging instead of simply lying down. Was previously the shape of the individual parts to be stored determines the effective one Surface pressure - the higher the surface pressure, the more the underside was arched - so the shape is no longer disadvantageous - in the aforementioned manner - from.

With reference to the illustration in FIG. 1, it can be said even further that the material thicknesses for the individual sections of the individual receptacle 1, as well as the individual receptacle 1 as a whole, are in principle chosen to be low, for economic reasons. This approach already leads to the fact that the inserted part 2 is rarely rigidly mounted, but rather is exposed to a kind of spring action on the bearing surface 5. This can lead to the fact that the contact surface 5 with its deepest point 6 deviates further downwards, ie to the floor level 7 (here symbolized by the arrow P ₁ ), the edge 4 being able to warp in places (here, for example, using the arrows P ₂₎ ). As a rule, this results in a better positive fit with the result of a lower surface pressure, which is synonymous with a gentler storage.

Figure 1a illustrates how the last described effect can be used optimally, so to speak. First, there is one for the Single part to be used 2 sufficient opening at the top Margin 4, d. H. a corresponding (inner) diameter at the upper edge 4 to provide, which allows such extensive use that the entire bearing surface 5 are largely used for carrying can. Furthermore, the material thicknesses should be chosen so that a good one Deformability in the sense of a good positive fit of the support surface 5 with the item 2 is made possible. The deformability is said to be advantageous so far go that the desired form fit already with the help of its own weight done individually and automatically. Nevertheless, the individual shot reaches 1 a stable end position.

The embodiment shown in Fig. 1a is in a previous one Stage shown in Figs. 3 and 4 and is intended in this context to be explained in more detail. 3 and 4 show the individual picture 1 still without item 2, namely at a stage immediately after it Production in a deep drawing process. In a way, it is like one Cake pan, which is over a circular opening in the square base plate 3 rises. The web provided as a retaining wall or edge 4 is easy compared to the base plate 3 or base level 7 slanted inwards, d. H. the aforementioned parts close together an angle α ≤ 90 °. This fact and the fact that the margin 4 a surface structure 8, namely here in the form of a fluting has it, even with a relatively low material thickness sufficient rigidity after adjustment to the worn Item 2.

The transition from the original form according to FIGS. 3 and 4 in the The final shape according to FIG. 1a can be preceded by a corresponding deformation the insertion of the item 2. However, this can also be dispensed with be when the item from the top of the dome-shaped conclusion "Cake mold" as shown in FIG. 3 and that conclusion with the help of Individual part 2 in the direction of the base plate 3 or the base level 7 is pressed in, with a curvature and the contact surface 5 - ultimately as shown in Fig. 1a - is activated. From the bulge the area following the edge 4 is affected, and that area here is divided into two sections 5a and 5b.

The partial area 5a, which immediately follows the edge 4, points a similar surface structure (fluting) 8a as the edge 4, however reduced to the extent that the (inner) diameter with increasing distance from the base plate 3 decreases (see. Fig. 4). in the In comparison to the surface structure 8 of the edge 4, the (reduced) Surface structure 8a of subarea 5a by half a structural element offset along the circumference. Finally, there is also that Material thickness at the transition from the edge 4 to section 5a is reduced, which also applies to the transition from section 5a to section 5b.

The aforementioned structuring as well as dimensioning facilitate that previously described bulging or reshaping, which is at least a Reversal of direction includes and should lead to well-defined final forms. Such results are with an embodiment according to FIGS. 1a, 3 and 4 guaranteed without further ado.

The idea of the invention can also be achieved with similar success other embodiments are reflected, of which FIGS. 2, 5 and Figure 6 illustrates another example. 5 gives a Basic shape again, which is an area for an outer wall or - wall 9 and a dome-shaped on one side Connection area 9a and to the other side an edge plate 10 along a has free opening. The opening, the outer wall 9 and the dome-shaped connection area 9a differ from the top view Embodiment according to FIGS. 1a, 3 and 4. They do not describe a circle more, but an oval, which is more (in projection) the ideal shape of a corresponds to other individual part 2 'to be stored in the individual receptacle 1', namely a plum. The embodiment according to FIGS. 2, 5 and 6 requires a double curvature or reshaping, with Fig. 6 the first step and, with dotted lines, the second Step illustrates how it is shown in more detail in Fig. 2 in the final state. Thereafter, the connection area 9a according to FIG. 5 is at an edge 4 'and an edition 5 formed. The edge 4 'is opposite the floor plane 7 placed slightly inwards, d. H. for the one enclosed by those parts Angle applies: α ≤ 90 °. The edge 4 'at the floor level 7 flows smoothly into the Outer wall 9 widening in the shape of a shell, which acts as the upper one Finally, the edge plate 10 carries.

This creates a single picture 1 'in the form of a good fillable and protected packaging unit, which in the simplest Case closed only by means of a film or the like (not shown) will need. It also applies that the material thicknesses between the conflicting requirements of high dimensional stability - in the interest good stability and sufficient resistance to mechanical stress - as well as easy deformability - in Interested in a good form fit with low surface pressure gentler storage - to choose and optimize. That's enough for in most applications a material thickness range of around 500 Micrometers (often only 300 micrometers) down to 100 micrometers.

Let us now turn to the embodiment described first back (see. Fig. 1 a, 3 and 4), there the dividing line runs between the edge 4 and the partial areas 5a and 5b in planes parallel to Floor level 7 or floor plate 3. However, this is by no means mandatory. Rather, the dividing lines in planes oblique to the floor plane 7 run, which is particularly worth considering if idealized Body shapes (such as spherical shape, egg shape or similar), greatly differing individual parts (e.g. B. pears from the field of fruit) should be stored. hereby the storage volume can be better used or a more advantageous one Presentation can be achieved. An example of this is shown in FIG. 7 Deliver embodiment in which the dividing line between the Subareas 5a and 5b run obliquely to the floor level 7. If necessary this could also be the case for the dividing line between subarea 5a and the margin 4 apply.

8 shows a further advantageous embodiment with regard to facilitated reshaping (reversal of direction), especially in the course of the Filling with the stored goods. For this, close to the edge 4 Large number of narrow sections 5c with increasingly reduced (indoor) Diameters, which can easily and securely become one Let the funnel-shaped trough slide back into the edge area and into it hold the goods carefully in a similar way as previously for other embodiments are described.

9 illustrates in a similar schematic simplification as Fig. 1, like single shots 1 to larger units firmly together can be connected, namely here to the bottom 11 of a Packaging container 12. Fig. 9a shows a corresponding Embodiment, which is based on individual shots 1 according to FIG. 1a lie. The packaging container 12 'is here with a rigid lid 13 closed, while for the packaging container 12 according to FIG. 9 a Cover film (not shown) is provided.

Another special embodiment according to FIG. 10 even allows the storage of complicated items 2 'in several places, namely one Stemmed glass in the area of the foot and cup. There are three individual shots 1 connected to one another via flexible webs 14. in this connection the good interlocking made possible by the invention is clearly revealed or the associated low surface pressure with the most varied Shape of the individual part (see flat foot in contrast to the arched cup). This makes it clear that the inventive concept in different ways can be realized and it has a wide range of applications.

In principle, thermoplastic materials can be used for material Use, which are particularly injection molded or deep drawn can. There are different material thicknesses for the individual zones or areas depending on the stress or effect - be it stepless or also staged - achievable. This is a method according to the invention characterized in that a plate made of thermoplastic plastic initially fixed to the edge of a trough-like shape, otherwise heated and then pressed in the plasticized state on the inner wall of the mold, after which the finished product is released from the mold and removed from it and, if necessary, with regard to its later contact surface (cold) is deformed. In a further development it is provided that the pressing on the inner wall to the mold is done by means of a stamp. After one Another proposal can be made by pressing against the inner wall of the mold of a hot jet of air happen.

LIST OF REFERENCE NUMBERS

1

Single shot

1'

Single shot, packaging unit

2

Item, tomato

2 '

Item, plum

2 '

Single part, stemmed glass

3

baseplate

4

Footbridge, edge

4 '

Footbridge, edge

5

bearing surface

5a

subregion

5b

subregion

5c

subregion

6

deepest point

7

Floor level, footprint

8th

Surface structure, fluting

8a

Surface structure, fluting

9

Outer wall, outer wall

9a

terminal region

10

edge plate

11

ground

12

packaging container

12 '

packaging container

13

cover

14

web

P ₁

arrow

P ₂

arrow

α

angle

Claims (19)

1. Individual receptacle (1, 1') for delicate goods such as fruit, vegetables or flowers for storage or transportation, comprising a support face (5) and a web, edge (4, 4') or the like connected to the support face (S) and delimiting the individual receptacle (1, 1'), whereby an individual part (2, 2') of the goods for storage or transportation can be separated from other individual parts (2, 2'), characterised in that the support face (5) is held on the upper edge (4, 4') of the individual receptacle (1, 1') and at least approximates the individual part (2, 2') with respect to its shape in the interest of reduced surface pressure, the support face (5) ending with its deepest point (6) free above the base plane (standing surface) (7), and in that its free aperture at the upper edge (4, 4') is selected such that the individual part (2, 2') to be stored can come into contact freely with the support face (5) and can be deposited thereon, the support face (5) being deformable in such a way that, under the inherent weight of the individual part (2, 2') stored thereon, it is substantially adapted to the contour thereof.
2. Individual receptacle according to claim 1, characterised in that its free aperture at the upper end (4, 4') demonstrates a course corresponding approximately to the projection of the individual part (2, 2') to be stored on the base plane (7) in particular a circle, oval or the like.
3. Individual receptacle according to either of claims 1 or 2, characterised in that the edge (4, 4') encloses an angle α ≤ 90° with the base plane (7) within the individual receptacle.
4. Individual receptacle according to any one of claims 1 to 3, characterised in that the upper edge (4, 4') extends in a plane oblique to the base plane (7).
5. Individual receptacle according to any one of claims 1 to 4, characterised in that the edge (4, 4') is strengthened (reinforced) in its shape by a surface structure (8), for example fluting.
6. Individual receptacle according to any one of claims 1 to 5, characterised in that the material thickness of the support face (5) is markedly reduced (stepped) compared to the material thickness of the edge (4, 4') and the support face (5) reduces optionally still further with respect to its material thickness from the edge (4, 4') towards the deepest point (6).
7. Individual receptacle according to any one of claims 1 to 6, characterised in that the support face (5) is sub-divided into partial regions (5a, 5b, 5c) having different material thicknesses, in particular decreasing from top to bottom and/or different surface structures (8a), the dividing lines of the partial regions (5a, 5b, 5c) optionally extending in planes with a different inclination to the base plane (7).
8. Individual receptacle according to any one of claims 1 to 7, characterised in that the first partial region (5a) of the support face (5) adjoining the edge (4), has a surface structure (8a) similar to that of the edge (4) in particular fluting, which is reduced, however, in accordance with the smaller internal diameter and is moreover offset by half a structure element in the peripheral direction.
9. Individual receptacle according to any one of claims 1 to 7, characterised in that the support face (5) consists of a plurality of narrow partial regions (5c) with more and more sharply reduced (internal) diameters which in sections form an approximately funnel-shaped trough.
10. Individual receptacle according to any one of claims 1 to 9, characterised in that towards the outside, a base plate (3) is adjacent to the lower edge (4) of the individual receptacle (1).
11. Individual receptacle according to claim 10, characterised in that a plurality of individual receptacles (1) are connected via their base plates (3) to form a packaging unit, such as the base (11) of a closable packaging container (12, 12') or to form an insert for a packaging container (12, 12').
12. Individual receptacle according to any one of claims 1 to 9, characterised in that an outer wall (9) which is preferably placed obliquely outwardly and clearly projects beyond the upper edge (4') with the support face (5) proceeding therefrom, at the bottom adjoins the edge (4') bearing the support face (5).
13. Individual receptacle according to claim 12, characterised in that an outwardly directed edge plate (10) extending parallel to the base plane (7) adjoins the upper end of the outer wall (9).
14. Individual receptacle according to claim 13, characterised in that a plurality of individual receptacles (1') are connected via their edge plates (10) to form a larger packaging unit which can be closed by means of film, lids or the like.
15. Individual receptacle according to any one of claims 1 to 14, characterised in that further individual receptacles (1) are connected via flexible webs (14) or the like in such a way that storage (= impact protection) of an individual part (2") is possible therewith at different points.
16. Individual receptacle according to any one of claims 1 to 15, characterised in that it consists of a thermoplastic material, which has been thermoformed or injection moulded.
17. Method for producing an individual receptacle according to any one of claims 1 to 16, characterised in that a plate made of thermoplastic material is initially fixed over a trough-like mould at the edge thereof, furthermore heated and then pressed in the plasticised state onto the inner wall of the mould, whereupon the finished product is released from the mould and removed therefrom and optionally still further cold-shaped with respect to its subsequent support face.
18. Method according to claim 17, characterised in that pressing onto the internal wall of the mould takes place by means of a punch.
19. Method according to claim 17, characterised in that pressing onto the internal wall of the mould takes place by means of a hot-air jet.

Images