JPH11313615A - Container for baked confectionery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safely handleable container for baked confectioneries having sufficient shape retaining properties without causing conspicuous gaps between the baked confectioneries. SOLUTION: This container for baked confectioneries is obtained by laminating a shape retaining synthetic resin layer 3 such as an unoriented polyethylene film having heat shrinkability such as about 1-6% onto a paper 2, forming a heat-resistant layer 4 on the outer surface thereof, thermoforming the resultant laminated sheet 1, producing a shrinking stress in the shape retaining synthetic resin layer 3 and retaining the shape of the container for the baked confectioneries composed of a bottom wall and a peripheral wall rising from the peripheral edge thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for filling dough for baking confectionery dough.

[0002]

2. Description of the Related Art A container of this type is generally in the form of a cup in which a plurality of flares are formed on a peripheral wall by molding aluminum foil, paper, or a composite of paper and synthetic resin.
This cup is filled with confectionery dough, baked in an oven or the like, and sold as attached to the cup.

[0003]

The physical properties required of such a cup are as follows:
Not to mention the heat resistance at the time of heating and baking, the shape does not collapse in the process from filling the confectionery dough to baking and selling, that is, shape retention. In these respects, the aluminum foil is superior and can be used as it is, but there is a problem that the edge of the aluminum foil is exposed and the finger of the hand is damaged. On the other hand, a material mainly composed of paper has a low shape-retaining property and must be placed in a baking mold until baking is completed.

Further, in any cup made of any material, when cooled after baking, a considerable gap is formed between the baked confectionery and the inner periphery of the cup. Since this gap is conspicuous enough to give an unpleasant sensation, it is not preferable in appearance and lowers the commercial value.

An object of the present invention is to provide a container which is safe to handle, has a sufficient shape-retaining property, and has no noticeable gap between the container and the baked confectionery.

[0006]

In order to solve the above problems, in the present invention, a shape-preserving synthetic resin layer made of a heat-shrinkable unstretched synthetic resin is provided on one side of paper, and the synthetic resin layer is The laminated sheet provided with the heat-resistant layer on the outer surface is subjected to heat molding to apply shrinkage stress to the shape-retaining synthetic resin layer so as to maintain the paper shape. Here, non-stretching means that stretching is not performed except for applying tension during film formation or extrusion coating.

The heat-shrinkable unstretched synthetic resin layer is preferably formed of a non-stretched polyolefin resin having a heat shrinkage of 1 to 6%.

A heat-resistant layer can be provided on the other side of the paper. Further, a heat-resistant layer can be provided on the other side of the paper via the same shape-preserving synthetic resin layer as described above.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a laminated sheet used to form the container of the present invention. As shown in the drawing, the laminated sheet 1 has a shape-retaining synthetic resin layer 3 provided on one surface of a paper 2 and a heat-resistant outer layer 4 provided on the outer surface of the layer 3. To laminate the paper 2, the shape-retaining synthetic resin layer 3 and the heat-resistant outer layer 4,
An extrusion lamination method, a coating method, a method of bonding using an adhesive, or a method of combining these methods can be appropriately selected.

The shape-retaining synthetic resin layer 3 is a layer for maintaining the shape of the container by heat molding described later, and has a shrinkage of about 1 to 6%, preferably about 2 to 5% by heating. Resins, for example unstretched polyolefin resins such as unstretched polypropylene resins and unstretched polyethylene resins, are suitable. Of course, it may be a film layer formed between the paper 2 and the layer 4 by extrusion. Although the thickness of the layer 3 depends on the elasticity of the paper 2, it is preferably 10 μm to 30 μm. If it is less than 10 μm, shape retention is not sufficient,
If it exceeds 30 μm, excessive shrinkage may occur during container molding, or expansion or shrinkage of confectionery dough cannot be followed during baking of confectionery,
There is a risk of deforming baked goods. In addition, there is waste in cost.

As the paper 2, pure white paper, thin paper, glassine paper or the like is used. Its basis weight is from 15 g / m ² to 80
g / m ² is preferred. If it is less than 15 g, it is too thin to hold the shape of the container, and if it exceeds 80 g, on the other hand, the elasticity becomes too large and it is difficult to give shape retention.

The heat-resistant outer surface layer 4 is preferably a synthetic resin film having good heat stability and heat resistance, such as polyester (polyethylene terephthalate) or polybutylene terephthalate, but a metal thin film may be used. When using a heat-resistant synthetic resin film, it is good to make it as thin as possible so as not to affect the shape retention of the entire sheet 1, for example, 20 μm or less, preferably 9 to 12 μm.
It is about. As the metal thin film, in addition to a metal foil such as an aluminum foil, a metal vapor-deposited film or a metal vapor-deposited film may be used. In the case of a metal foil, the thickness is preferably 30 μm or less.

As shown in FIG. 2, the adhesive 5
The heat-resistant outer surface layer 4 may be provided in the same manner as described above.
In this case, when the synthetic resin film is used for both of the heat-resistant outer surface layers 4 and 4 on both sides, the total thickness is 20 μm or less, and when both use the metal foil, the total thickness is 30 μm or less. When using, each 10μ
m and 15 μm or less. However, when one of the synthetic resin film and the metal foil is extremely thin, the respective values may be exceeded.

As shown in FIG. 3, paper-retaining synthetic resin layers 3 may be provided on both sides of paper 2. In this case, both layers 3,
It is preferable that the total thickness of No. 3 is 10 μm to 30 μm. A heat-resistant outer surface layer 4 is provided on the outer surfaces of the two layers 3 and 3, respectively.
Is provided. The thickness of these outer layers 4, 4 is the same as described with reference to FIG.

A container is formed using the laminated sheet 1 as described above. First, heat-mold the sheet 1 at about 120 ° C,
After completion of the molding, the temperature of the mold is raised to about 160 ° C., and the mold is held in the mold for about 10 to 20 seconds. At this time, the shape-retaining synthetic resin layer 3 tends to shrink within a range of 1 to 6%, and the shrinkage stress fixes the shape of the paper, thereby exhibiting a function of preventing the resilience of the paper 2, and the container 2 Maintain shape stably. An example of the completed container is shown in FIG. The container 10 has a large number of flares 11 provided on a peripheral wall rising from a bottom wall. However, the shape of the container is not limited to this. It may be a tray type or a box type provided with a plurality of pleats. In the case of the laminated sheet 1 in FIG. 1, it is preferable to form the container so that the inner surface of the container becomes the heat-resistant layer 4.

In order to bake a confectionery using the above container, the confectionery dough may be filled in the container and heated in an oven as it is. During the heating and baking, since the heat-resistant layer 4 is provided, the shape-retaining synthetic resin layer 3 does not fluidize and adhere to the confectionery dough, and even if the container peripheral wall expands outward due to the expansion of the confectionery dough, After cooling, the peripheral wall is restored by the shape-preserving force of the shape-preserving synthetic resin layer 3, and there is no noticeable gap between the peripheral wall of the baked confection.

Examples will be described below.

[0018]

Example 1 A polyester film having a thickness of 16 μm and a pure white paper having a basis weight of 50 g / m ² were laminated by extruding polyethylene. The thickness of the polyethylene was 15 μm. This laminated sheet was heated and molded at 120 ° C. with the polyester film side as the inner surface, and the mold was heated to 160 ° C. and held for 15 seconds. The container has a bottom diameter of about 62m.
m, a height of about 22 mm, a diameter of an opening of about 72 mm, and a circular cup shape having a large number of flares formed on a peripheral wall. After the molding, the container was left at room temperature for 24 hours, but there was no change in the shape and size of the container.

Next, a commercially available cheesecake mixed powder is made into a paste, and the dough is filled up to the opening of the container,
It was baked at 200 ° C. for 21 minutes and 30 seconds in an oven.
When visually observed after cooling, no noticeable gap was found between the baked confectionery and the container. Further, when the diameter of the container opening was measured, it was about 73 mm.

[0020]

Example 2 A polyester film having a thickness of 9 μm and a pure white paper having a basis weight of 40 g / m ² were laminated with a dry lamination adhesive, and an aluminum foil having a thickness of 20 μm was laminated on the opposite side of the pure white paper by extruding polyethylene. Was.
The thickness of the polyethylene was 10 μm. Example 1 using this laminated sheet with the polyester film inside
The same heat molding was performed to form a container having the same shape and size.

When the same experiment as in Example 1 was performed using this container, similar results were obtained. The diameter of the container opening after baking the confectionery was about 73.5 mm.

[0022]

EXAMPLE 3 A polyester film having a thickness of 9 μm was bonded to one side of pure white paper having a basis weight of 21 g / m ² by extrusion of a polyethylene having a thickness of 10 μm.
Using a laminated sheet obtained by laminating a 15-μm-thick aluminum foil by extrusion of a 10-μm-thick polyethylene, the same heat-molding as in Example 1 was performed with the polyester film as the inner surface to form a container having the same shape and size.

When the same experiment as in Example 1 was performed using this container, similar results were obtained. The diameter of the container opening after the confectionery was formed was about 72.5 mm.

[0024]

According to the present invention, as described above, the paper is mainly made of paper that does not cause incineration pollution, and the paper is provided with a synthetic resin layer having an appropriate shrinkage property, and the outer surface is further covered with a heat-resistant layer. By molding, shrinkage stress acts on paper with low shape retention, so that it functions to maintain the shape, the shape of the container is stably maintained even after baking the confectionery, and the container is cooled even after cooling the baked confectionery There is no noticeable gap between the baked confectionery and the heat resistance.

Further, since paper is mainly used, it can be provided at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a laminated sheet forming a container of the present invention.

FIG. 2 is a sectional view showing another example of a laminated sheet.

FIG. 3 is a sectional view showing still another example of the laminated sheet.

FIG. 4 is a perspective view showing an example of a container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated sheet 2 Paper 3 Shape-retaining synthetic resin layer 4 External heat-resistant layer 5 Adhesive 10 Container 11 Flare

Claims (5)

[Claims] 1. A laminated sheet provided with a shape-retaining synthetic resin layer made of a heat-shrinkable synthetic resin on one surface of a paper, and a heat-resistant layer provided on an outer surface of the synthetic resin layer, and then heat-formed to form a bottom wall. And a baked confectionery container formed with a peripheral wall rising from the periphery thereof. 2. The baked confectionery container according to claim 1, wherein the heat shrinkage of the synthetic resin layer is 1 to 6%. 3. The baked confectionery container according to claim 1, wherein the synthetic resin layer comprises a non-stretched polyolefin resin layer. 4. The baked confectionery container according to claim 1, wherein a heat-resistant layer is provided on the other surface of the paper. 5. The paper according to claim 1, wherein a shape-retaining synthetic resin layer made of a heat-shrinkable unstretched synthetic resin is provided on the other surface of the paper, and a heat-resistant layer is provided on an outer surface of the synthetic resin layer. A container for a baked confection according to any one of the above.