JP2520712Y2 - Heat insulating container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a heat insulating container mainly used as a container for instant food.

[Prior Art] Conventionally, as a heat insulating container for instant foods, such as instant noodles, which can be used as an edible product simply by pouring hot water, a plastic container is widely used because it is easy and inexpensive to manufacture. For example, as a typical one,
There are things such as plastic made of foam material and double container made of plastic. However, recently, non-burnable dust pollution of plastic products has become a big social problem, and the use of heat insulating containers made of plastic tends to be limited.

In view of the above, the paper-made heat insulating container is being reviewed. A typical example thereof is a paper-made heat-insulating container having a wavy shape around its periphery so as to have a concave portion and a convex portion in the vertical direction. Conventionally, an outer cylinder is used to cover the paper cup body, press it along the outer periphery of the paper cup body, and attach it with an adhesive.

[Problems to be Solved by the Invention] The heat-insulating container made of paper described in the prior art has a heat insulating effect due to the space formed by the unevenness of the outer cylinder. Since it is stretched in the vertical direction, there is a problem that it is slippery when held by a hand. Further, during manufacturing, since a step of forming corrugated irregularities on a paper outer cylinder and adhering the corrugated irregularities along the paper cup main body is required, there is a problem that labor is required and cost is increased. It was

The present invention was devised to solve the above problems, and provides a paper-made heat-insulating container that is easy to manufacture, has an excellent heat-insulating effect, and is slippery when held by hand. The purpose is to do.

[Means for Solving the Problems] In order to achieve the above object, the heat insulating container of the present invention comprises:
It consists of a paper cup body and a fan-shaped heat-insulating sheet along the outer circumference of the body of the paper cup body.The heat-insulating sheet consists of a single-sided corrugated board with a liner attached to one side of a corrugated stepped core. The liner is made by cutting this single-sided corrugated board into a fan shape so that the direction of the concave or convex portion of the core is the direction toward the center of the fan in the lateral center of the fan. It is characterized in that it is wrapped around the outer periphery of the paper cup body with the side as the inner surface and adhered.

[Operation] In the heat insulating container having the above structure, the heat of the contents is prevented from being transferred to the outside of the container by the side wall of the paper cup body, the liner of the single-faced corrugated board which is the heat insulating sheet, and the core.

Further, the direction of the convex portion of the core exposed on the outside of the container is inclined from the vertical direction in most of the surface of the container.

[Embodiment] An embodiment of the present invention will be described below.

FIG. 1 is a perspective view showing an embodiment of a heat insulating container according to the present invention, FIG. 2 is a perspective view of a paper cup body, FIG. 3 is a developed view of a heat insulating sheet, and FIG. 4 is heat insulating shown in FIG. FIG. 5 is a horizontal partial cross-sectional view of the sheet, and FIG. 5 is a horizontal partial cross-sectional view of the heat insulating container shown in FIG. FIG. 1 and FIG.
A plurality of parallel lines in the figure indicate the tips of the convex portions in the unevenness for convenience of illustration.

As shown in FIG. 1, the heat insulating container 1 is composed of a paper cup body 2 and a heat insulating sheet 3 wrapped around the outer circumference of the body.

As shown in FIG. 2, the paper cup body 2 is similar to a normal paper cup, in which a blank plate made of paper coated with a synthetic resin such as polyethylene is wound on the inner surface or both inner and outer surfaces, and both ends thereof are bonded to each other by a bonding portion 4 After forming the torso portion 5 by adhering together, the bottom plate 6 made of the same paper is wound under the torso portion 5, and the outward curl portion 7 is provided at the upper opening edge.
Are formed.

On the other hand, as shown in the sectional view of FIG. 4, the heat insulating sheet 3 is made of a single-sided corrugated board in which a liner 9 is attached to one side of a corrugated core 8 and the single-sided corrugated board is It is created by cutting into a fan shape as shown in FIG. Further, in this embodiment, the fan-shaped size just covers the outer circumference of the body portion 5 of the paper cup body 2. Here, when the heat insulating sheet 3 is cut from an original sheet of single-sided corrugated cardboard, its direction is determined so that the direction of the concave portion or the convex portion of the core 8 is the direction toward the center of the fan at the lateral center of the fan. ing.

The heat insulating sheet 3 thus formed is wound around the outer circumference of the body 5 of the paper cup body 2 with the liner 9 side thereof as the inner surface, and the two are bonded with an adhesive to obtain the heat insulating container 1 shown in FIG. Has been created.
In this case, since the direction of the concave portion or the convex portion in the core 8 of the heat insulating sheet 3 is the direction toward the center of the fan in the lateral center of the fan as described above, that is, the vertical direction, the heat insulating sheet 3 is entirely It is easy to curl laterally. Therefore, the heat insulating sheet 3 can be easily wrapped around the outer periphery of the body portion 5 of the paper cup body 2.

As shown in the cross section of FIG. 5, the side wall of the heat-insulating container 1 having the above-described structure has an uneven shape on the outside of the double paper layer including the body portion 5 of the paper cup body 2 and the liner 9 of the heat insulating sheet 3. The core 8 is added. Therefore, due to the low thermal conductivity of the double paper layer or the core 8 itself and the heat insulation effect of the voids 10 formed by the irregularities of the core 8, the heat of the hot water poured into the cup body 2 is reduced. Is prevented from being transmitted to the outer surface of the core 8.

In addition, since the direction of the convex portion of the core 8 exposed to the outside of the heat insulating container 1 is inclined from the vertical direction on most of the surface of the container 1, it does not slip when held by hand. To be prevented.

In addition, in the above-mentioned embodiment, the shape of the heat insulating sheet 3 is set to cover the entire outer periphery of the body portion 5 of the paper cup body 2, but the heat insulating sheet 3 may be a partially cutaway one. In this way, the outer peripheral surface of the body portion 5 is exposed at the cutout portion, so that a clean print can be applied to this portion. In this case, it is necessary to position the paper cup body 2 with respect to the heat insulating sheet 3 to be wound, in order to match the printed portion on the outer periphery of the body portion 5 with the cutout portion. In order to perform the positioning, a mark is provided on the outer periphery of the body portion 5 of the paper cup body 2, and the mark is detected by a photo sensor or the like while rotating the paper cup body 2, or the position of the paper cup body 2 is determined. The paper cup main body 2
There is a method of determining the position of the paper cup body 2 by mechanically hooking the stepped portion while rotating the.

[Advantage of Invention] Since the heat-insulating container of the present invention is configured as described above, it can be manufactured by a simple process of winding and adhering a heat-insulating sheet made of single-faced cardboard around the paper cup main body, In addition to having a low thermal conductivity, since voids are formed by the unevenness of the core, a high heat insulating effect can be obtained.

In addition, the direction of the convex part on the surface of the container is inclined from the vertical direction in most parts, and it prevents slipping when held by hand, so keep hot contents in a safe state. You can eat the contents.

Further, since the paper cup body and the heat insulating sheet are both made of paper and can be incinerated, the heat insulating container of the present invention can be easily disposed of.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a heat insulating container according to the present invention, FIG. 2 is a perspective view of a paper cup body, FIG. 3 is a developed view of a heat insulating sheet, and FIG. 4 is heat insulating shown in FIG. FIG. 5 is a horizontal partial cross-sectional view of the sheet, and FIG. 5 is a horizontal partial cross-sectional view of the heat insulating container shown in FIG. 1 ... Insulating container, 2 ... Paper cup body, 3 ... Insulating sheet, 4 ... Laminating part, 5 ... Body part, 6 ... Bottom plate, 7 ...
Curl part, 8 ... center core, 9 ... liner, 10 ... void

Claims (1)

(57) [Scope of utility model registration request] 1. A paper cup main body and a fan-shaped heat insulating sheet along the outer circumference of the body of the paper cup main body, wherein the heat insulating sheet has a corrugated stepped core and a liner attached to one side thereof. It is made of corrugated cardboard, and is made by cutting this single-sided corrugated board into a fan shape so that the direction of the concave portion or the convex portion in the core becomes the direction toward the center of the fan in the lateral center portion of the fan, A heat-insulating container, characterized in that the heat-insulating sheet is wrapped around and adhered to the outer periphery of the paper cup body with its liner side as the inner surface.