Envelopes – wrappers – and paperboard boxes – Paperboard box – Cylindrical or conical body – or wall structure
Patent
1996-04-03
2000-07-18
Garbe, Stephen P.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Cylindrical or conical body, or wall structure
47 72, 229 582, 229 584, 229109, 2291161, 229114, 229156, B65D 524
Patent
active
060894466
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a cake container, and more specifically, to a cake container for forming and maintaining cake batter that is heated to expand in a predetermined configuration.
BACKGROUND ART
Conventionally, a cup-like container formed by bending sheet material such as paper is known as a cake container for holding poundcake and the like. For example, as shown in FIG. 22, a container body 20 comprises a bottom 21 corresponding to the bottom of a cake and a sidewall 22 protruding from the periphery of the bottom 21. The container body 20 consists of a sheet of material, which is shaped like a cup by press working. A fold 23 is defined on the surface of the material. The bottom 21 and the sidewall 22 are separated by the fold 23 as a boundary. Outer folds 24 and inner folds 25 are defined on the surface of the sidewall 22. The surface of the sidewall 22 is divided into a plurality of bent pieces 26a-26c by the folds 24, 25.
Typically, aluminum foil is used as material for such a container. In this case, once the material is bent at the outer folds 24 and the inner folds 25, bent folds are easy to form. Thus, the folds 24, 25 are difficult to unfold, and the entire configuration of the sidewall 22 in the container body 20 is favorably maintained.
Meanwhile, if the material is made of synthetic resin, paper or the like, a restoring force that restores the material to its original flat shape is applied to the outer folds 24 and the inner folds 25 when the material is bent by press working. This leads to a problem in that the sidewall 22 loses its shape, and the entire configuration of the sidewall 22 cannot be properly maintained.
Accordingly, it is an object of the present invention to provide a container in which the entire configuration of the sidewall in the container body is favorably maintained by making the folds defined on the sidewall not to unfold.
DISCLOSURE OF THE INVENTION
In a cake container according to the present invention, a first fold is defined on the surface of a material made of sheet body to be press-worked. The surface of the material is divided by the first fold as a boundary between a bottom corresponding to the bottom of cake and a sidewall. Second folds are defined on the surface of the sidewall. The sidewall is divided into a plurality of bent pieces by these second folds as boundaries. Furthermore, a step portion intersecting the second folds to form a difference in level is defined at each bent piece to maintain the configuration of the sidewall. When a restoring force of the material (that tries to restore the material to the original flat sheet-shape) is applied to the second folds as bent and formed, the second folds are urged to unfold. However, the second folds are prevented from unfolding by the step portion as resistance.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a plan view showing material in an embodiment according to the present invention;
FIG. 2 is a perspective view showing a container body;
FIG. 3 is an enlarged perspective view showing a region A in FIG. 2;
FIG. 4 is a plan view showing another embodiment of the container body provided with two step portions;
FIG. 5 is an elevational view showing the container body in FIG. 4;
FIG. 6 is a perspective view showing the container body in FIG. 4;
FIG. 7 is a side view showing the container body in FIG. 4;
FIG. 8 is a plan view showing another embodiment of the container body provided with three step portions;
FIG. 9 is an elevational view showing the container body in FIG. 8;
FIG. 10 is a perspective view showing the container body in FIG. 8;
FIG. 11 is a perspective view showing another embodiment of the container body provided with step portions solely at the outer folds and the inner holds on the sidewall of the container body;
FIG. 12 is a plan view solely showing the bottom of the container body having a plurality of air holes disposed radially in another embodiment of the container body;
FIG. 13 is a plan view solely showing the bottom of the container body having four ci
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Garbe Stephen P.
Hirano Shiki Co., Ltd.
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