JPH06298239A - Package - Google Patents

Abstract

PURPOSE: To provide a package having formed a wall panel so that a transparent joint strip constitutes a part of the wall of finished package to enable consumers to see the contents through the strip. CONSTITUTION: A joint strip constitutes a part of the wall 5 of a package 2, and an opening structure 7 is formed on this strip. This means that the joint strip is given a broad structure to constitute the wall 5 of the finished package 2. This strip is made of stiff transparent plastics or its laminate that can be heat-sealed. The open structure part 7 of the package is disposed on the joint strip. The part 7 is punch-holed and is covered with a cover strip 9 that is seal-bonded to the strip.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention is made from a continuous material web consisting of a paper or cardboard and a thermoplastic laminate (3) with a joint strip (4) running along one edge thereof. Related to the package of the format.

[0002]

BACKGROUND OF THE INVENTION Single-use disposable packages for liquid food products are often of the type made from a laminate of paper or cardboard cores laminated with thermoplastic and possibly aluminum foil. This web of material is formed into a tube in a filling machine,
Filled with the intended contents, cut into individual packages and ultimately formed into finished cartons or packages. For this type of package, the edges of the inner material web which come into contact with the liquid content need to be protected against the ingress of the package content into the paper layer. This is typically addressed with narrow joint strips of thermoplastic. The joint strip may be permanently fixed, i.e. forming part of the inner plastic layer laminated to the material web, or alternatively the joint strip may be applied to the material web once prepared.

Such liquid food packages also include some type of open structure, which may be constructed by covering the pre-punched holes with a plastic strip. Also, in such an example, the edges of the holes must be covered by an inner strip to protect the exposed paper fibers from the enclosed contents.

[0004]

One object of the present invention is that the joint strips form part of the wall surface of the finished package, thereby forming a wall panel which allows the consumer to see the product. , To design joint strips.

Another object of the present invention is that the joint strip comprises an open structure on the surface. In such an example, punching of the paper layer is avoided, resulting in no free paper edge to be protected from the package contents.

[0006]

These and other objects are characterized in that in a package of the type described at the outset, a joint strip constitutes part of the wall of the package and an opening structure is provided in this joint strip. This is accomplished by the invention provided.

Preferred embodiments of the invention are further provided with the features recited in the claims.

The preferred embodiments of the present invention are described in greater detail below with reference to the accompanying drawings.

Referring to the drawings, FIG. 1 shows a piece of material web 1 intended for use in a package 2 according to the invention. The wide part 3 of the material web 1 is composed of a laminate material in which different layers of thermoplastic and usable aluminum foil are laminated to the core of a paper or cardboard. Usually, this laminate is the desired package 2
This material web 1 according to the prior art comprised thin joint strips of narrow width, which constituted the entire width required for manufacturing the. This package 2 according to the invention consists only of a part of the laminate 3 forming the package, a relatively wide plastic strip or joint strip 4 having good transparency being laminated along one edge of the material web. Fixedly seal-bonded to the material. The joint strip 4 is made rigid so as not to adversely affect the stability of the finished package 2.
The plastic from which the joint strip 4 is manufactured must be heat-sealable so that it can be sealingly bonded to the material web 3 along one edge and, in the tube forming operation of the filling machine, to the other edge. I won't.
The joint strip 4 has the possibility of heat sealing, transparency,
Appropriately composed of a laminate of different plastic layers which fulfills the various requirements imposed on the joint strip 4 with regard to rigidity and gas barrier properties. In such an example, one protects the edges of the laminate folded back inward to face the contents of the package, while the other allows the consumer to see the sealed contents. Wall 5
To obtain the joint strip 4 forming the package 2. The width of the joint strip 4 is approximately equal to half the longitudinal side 6 of the finished package 2. By metallizing the joint strip 4, different types of specialized packages are obtained. Therefore, with the fixedly sealingly joined joint strip 4, the width of the packaging material web 1 according to FIG.

On its surface the joint strip 4 comprises an open structure 7. The opening structure 7 is in the preferred embodiment a punched hole 8 which is covered with a cover strip 9 which is fixedly sealed. Therefore, this hole 8 is punched into the joint strip 4 and in the next working step this hole 8 is covered by a fixedly sealingly connected cover strip 9 called a pull tab. The pull tab strip 9 may comprise a folded, non-sealed portion 10 which acts as a grip lug when the pull tab strip 9 is disconnected. The piercing and the static sealing of the cover strip 9 are respectively performed before the joint strip 4 is sealed to the rest of the web portion 36 or after the joint strip 4 is sealed to the package laminate 3.

Alternatively, the laminating part 3 is fed separately to the filling machine and the sealing of the joint strip 4 and the piercing and sealing of the cover strip to the laminating part 3 are carried out in the filling machine.

Another embodiment of the present invention is shown in FIG. In this a finished package 2 with pre-punched holes 8 and with or without an outer cover strip 9
Comprises an external inlet and lid portion 13, which can be pre-injection molded into one or more parts.

The finished material web 1 according to FIG. 1 is formed in a tube filling machine, filled with the intended contents, sealed, cut into individual packages 2 and finally in the finished package form. Is formed. This package form has the appearance as shown in FIG.
Alternatively, other package shapes, such as, for example, tetrahedral and cushion-shaped packages, made of a continuous web of material 1 and then cut into individual packages 2, are:
Such a wide joint strip 4 may be provided which provides transparency so that the contents of the package 2 can be seen.

In FIG. 2, the joint strip 4 is shown as part of the wall of the package 1, which provides good transparency and makes the sealed contents visible to the consumer. A level marking 11 is pre-printed on the laminate portion 3 of the package adjacent the joint strip 4 to indicate how much more content remains in the package 1. Alternatively, the level markings 11 can be printed on the joint strip as shown in FIG.

When the package 2 is opened by the consumer, the cover strip 9 is cut off and the unsealed portion 10 of the cover strip 9 is pinched and cut towards the end wall 12 of the package 1. This operation exposes the pre-punched holes 8 in the joint strip 4, allowing the sealed contents to be consumed at that point.

As will be apparent from the foregoing description, the present invention allows the width portion of the package to be viewed by the consumer and also provides a joint strip which itself comprises the open structure of the package.

The present invention should not be considered limited to what has been described and illustrated above, and many variations are conceivable without departing from the spirit and scope of the appended claims.

[Brief description of drawings]

1 is a front view showing a fragment of a material web for use in a package according to the invention. FIG.

FIG. 2 is a perspective view showing a package according to the present invention.

FIG. 3 is a perspective view showing a part of another embodiment of the package according to the present invention.

[Explanation of symbols]

 1 Material web 3 Wide part 4 Joint strip 5 Wall surface 6 Longitudinal side surface 7 Opening structure part 8 Hole 9 Cover strip 10 Unsealed part 11 Level marking 12 End wall 13 Lid part

Claims (5)

[Claims] 1. A continuous material web (1) made of a laminate of paper or cardboard and a thermoplastic (3) with a joint strip (4) extending along one edge thereof. A package (2) in the form of a joint strip (4)
Forming part of the wall surface (5) of the package (2) and the opening structure (7) formed on the joint strip (4). 2. Package (2) according to claim 1, wherein the open structure (7) comprises pre-punched holes (8) covered with a heat-sealed cover strip (9). A package characterized by that. 3. The package (2) according to claim 2, wherein the opening structure (7) and the cover strip (9).
A package characterized in that the holes (8) of the are covered with an outer inlet and a lid part (13). 4. Package (2) according to claim 1, characterized in that level markings (11) are printed on the part (3) of the laminate adjacent to the joint strip (4). . 5. Package (2) according to claim 1, characterized in that level markings (11) are printed on the joint strips (4).