JP2003026142A - Paper-made container with vertical gathers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily separate paper-made containers with vertical gathers one by one from a stack of the containers obtained with increased forming efficiency, by press-forming a plurality of the containers from a plurality of sheets of composite paper. SOLUTION: The paper-made container with vertical gathers is formed by folding a sheet of composite paper 2 with a shape retention film 1 laminated from the vicinity of a bottom 3 at its center together with numerous vertical gathers 4 to make into a container barrel 5. The composite paper 2 with a silicone resin layer 6 coated on one of surfaces of the paper 2 is used. The composite paper is folded to stand from the vicinity of the bottom 3 at its center together with the numerous gathers 4 to integrally form the container barrel 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pleated paper container, and more particularly to a vertical pleated paper container suitable for use as a container for heat-processed food such as baked confectionery or steamed confectionery.

[0002]

2. Description of the Related Art As a paper container with vertical pleats of this type,
Conventionally, for example, as disclosed in Japanese Utility Model Publication No. 7-6782, a baking pan made of a composite paper laminated with a shape-retaining film and folded along with a number of vertical folds from the periphery of the bottom in the center to form a container body. Vertical pleated paper containers are well known.

[0003]

In this conventional example, a paper container with vertical pleats is press-formed one by one from a single piece of composite paper, and then a plurality of containers are stacked to make a paper container. It is easy to separate one by one, but pressing a large number of paper containers with vertical pleats one by one results in poor molding efficiency and increased cost, which is uneconomical. Therefore, if a plurality of paper containers with vertical pleats are press-molded from a plurality of composite papers to improve the molding efficiency, it is necessary to separate the paper containers one by one from the container stack obtained by this molding. , A large number of vertical folds in the container stack result in tight bite and close contact due to a strong press pressure, and the single separation of the paper container from the container stack is extremely difficult and nearly impossible, and confectionery production There was an inconsistent essential and big problem that it was extremely inefficient and inconvenient to use a single container in the field.

The present invention has been made in order to eliminate many problems in the above-mentioned conventional example, and its object is to press-mold a plurality of vertical pleated paper containers one by one from a plurality of composite papers. Therefore, even if the molding efficiency is improved, it is possible to easily separate the paper containers one by one from the container stack obtained by the molding.

[0005]

DISCLOSURE OF THE INVENTION The above-mentioned object of the present invention is to form a composite paper laminated with a shape-retaining film from the periphery of the bottom in the center together with a number of vertical folds to form a container body. In making a pleated paper container, a composite paper in which a silicone resin layer is adhered to the paper surface of the composite paper or the surface of the shape-retaining film is used, and the composite paper is provided with a number of vertical folds from the periphery of the bottom at the center thereof. This could be achieved by folding and forming the body of the container integrally.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Among the embodiments of the present invention, first, a basic example of the present invention will be described. The basic form of the present invention is, as shown in FIG.
In order to make a vertical pleated paper container having a container body 5 by folding up the laminated paper 2 laminated with the composite paper 2 from the periphery of the bottom portion 3 in the center of the composite paper 2 as shown in FIG.
As described above, a shape-retaining film 1 such as a polyethylene terephthalate film is coated on a paper surface with a heat-adhesive plastic such as polyethylene as a sizing medium 1A by a well-known extraction lamination coating method. The silicone resin layer 6 is adhered to the surface or the paper surface to make the composite paper 2. However, a thermosetting paste may be used instead of the paste medium 1A made of the heat-adhesive plastic.

Then, a number of sheets (about 5 to 15 sheets) corresponding to the thickness of the composite paper 2 are superposed, and from the periphery of the bottom portion 3 at the center thereof, together with a number of vertical pleats 4, by a well-known embossing press machine. By forcibly folding it up, it is possible to obtain a paper container stack A in which a plurality of vertical pleated paper containers having a large number of vertical pleated container bodies 5 as shown in FIG. 3 are stacked. By separating the stacked containers A one by one from the upper one, it was possible to construct a single product of the vertical pleated paper container according to the present invention as shown in FIG.

That is, in the paper container stack A immediately after the embossing press, the opening edges of a plurality of containers as shown in FIG. 3 do not compete with each other. Although almost flush with each other, when the pressing die of the pressing machine is removed from the container, the opening edge of each container immediately becomes a plurality of due to the large slipperiness of the silicone resin layer 5 and the rigidity and elastic restoring force peculiar to the composite paper. The respective opening edges of the container naturally compete with each other as shown in FIG. 3, which makes it extremely easy to separate the individual products. In addition, the paper container stack A as shown in FIG. 3 in which the opening edges of the plurality of containers compete with each other, and when the upper part is pushed down, it feels fluffy and the size of the container is lowered uniformly. The respective opening edges naturally compete with each other as shown in FIG.

[0009]

EXAMPLE The surface of the shape-retaining film 1 is previously corona-irradiated or immersed in a strong acid or strong alkaline solution to activate the surface of the shape-retaining film 1, and the silicon resin layer 6 is applied to the activated surface. If the silicon resin layer 6 is adhered to the film surface, the silicon resin layer 6 bites well on the film surface, and the adhesion strength can be increased even with a small amount of the silicon resin. Further, if the shape-retaining film 1 is laminated on the composite paper 2 using a heat-adhesive plastic such as molten polyethylene as a sizing medium, a high-quality and long composite paper 2 can be obtained at a low cost. It was possible to produce a large number of inexpensive vertical pleated paper containers.

[0010]

Since the present invention employs the above-mentioned modes, it has the following effects. According to the invention of claim 1 or claim 2 of the present invention, a vertical fold formed by folding up the composite paper laminated with the shape-retaining film together with a large number of vertical folds from the periphery of the bottom in the center to form a container body. In making an attached paper container, a composite paper in which a silicone resin layer is applied to the paper surface of the composite paper or the surface of the shape-retaining film is used, and the composite paper is folded along with a number of vertical folds from the periphery of the bottom at the center thereof. Since the body of the container is integrally formed by raising it, even if the molding efficiency is improved by press-molding a plurality of vertical pleated paper containers one by one from a plurality of composite papers, the container stack obtained by this molding It has an excellent effect that it is possible to easily separate the paper containers one by one from the body.

According to a third aspect of the present invention, a composite paper in which a silicone resin layer is adhered to the surface of the shape-retaining film is used, and the composite paper is provided with a number of vertical folds from the periphery of the bottom in the center thereof. In a paper container with vertical folds that is folded up to form the body of the container integrally, in addition to the above-mentioned effects, the shape-keeping film can prevent the penetration of silicon resin into the paper. However, it became a composite paper with a large surface smoothness, and it was possible to add the effect that it was possible to manufacture a large number of paper containers with vertical pleats, which were of good quality, were inexpensive, and were easy to separate one by one.

According to a fourth aspect of the present invention, the surface of the shape-retaining film 1 is previously activated by a corona irradiation method or the like, and the silicon resin layer 6 is applied to the activated shape-retaining film surface. By doing so, the silicon resin layer 6 can be well bited against the film surface, and the adhesion strength can be increased even with a smaller amount of silicon resin, which is economical, and the shape-retaining film 1 can be heated with molten polyethylene or the like. According to the invention of claim 5 in which the adhesive plastic is laminated and adhered to the composite paper 2 as the sizing medium 1A, a good quality and long composite paper 2 can be obtained at low cost, and as a result, a high quality and inexpensive vertical paper is obtained. The effect of being able to manufacture a large number of pleated paper containers was added.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a container according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing an example of a composite paper as a material for a container according to the present invention.

FIG. 3 is a perspective view showing an example of a container stack according to the present invention.

[Explanation of symbols]

1 Shape retention film 1A glue medium 2 Composite paper laminated with shape-retaining film 2A paper leaf 3 container bottom 4 container vertical folds 5 Container body 6 Silicon resin layer

Claims (5)

[Claims] 1. A vertical pleated paper container in which a composite paper 2 laminated with a shape-retaining film 1 is folded up together with a number of vertical pleats 4 from the periphery of a bottom portion 3 at the center thereof to form a container body 5. The composite paper 2 in which the silicone resin layer 6 is adhered to one surface of the composite paper 2 is used, and this composite paper is folded up from the periphery of the bottom portion 3 at the center thereof with a number of vertical folds 4 to integrally form the container body portion 5. Paper container with vertical folds. 2. A vertical pleated paper container in which a composite paper 2 laminated with a shape-retaining film 1 is folded up from a periphery of a bottom portion 3 in the center thereof along with a number of vertical pleats 4 to form a container body 5. A composite paper 2 having a silicone resin layer 6 on the surface of a shape-retaining film 1 adhered to the composite paper 2 is used, and the composite paper is folded from the periphery of the bottom portion 3 at the center of the composite paper 2 along with a number of vertical folds 4. A vertical pleated paper container with a body 5 formed integrally. 3. A vertical pleated paper container in which a composite paper 2 laminated with a shape-retaining film 1 is folded up together with a number of vertical pleats 4 from the periphery of a bottom 3 at the center thereof to form a container body 5. A composite paper 2 having a silicon resin layer 6 adhered to the paper surface of the composite paper 2 was used, and this composite paper was folded up along with a number of vertical folds 4 from around the bottom portion 3 at the center thereof to integrally form a container body portion 5. Paper container with vertical folds. 4. A composite paper 2 in which the surface of the shape-retaining film 1 is activated and a silicon resin layer 6 is adhered to the activated surface is used to form the composite paper from the periphery of the bottom portion 3 at the center thereof in a number of longitudinal directions. The vertical pleated paper container according to claim 1 or 2, wherein the container body 5 is integrally formed by folding it up with the folds 4. 5. The shape-retaining film 1 is laminated on a composite paper 2 using a heat-adhesive plastic as a paste medium,
The vertical pleats according to any one of claims 1 to 4, wherein the composite paper (2) is folded from the periphery of the bottom portion (3) in the center thereof together with a number of vertical pleats (4) to form a container body (5). Paper container.