JP2006290448A - Insulating cup-shaped paper container - Google Patents

Abstract

The present invention provides a heat insulating cup-shaped paper container that has good heat insulating properties when used, good appearance and cosmetics, and is relatively inexpensive to manufacture.
A heat-insulating cup-shaped paper container in which a sheet-like lid material 200 is heat-sealed so as to be openable and sealed in an upper opening of a cup-shaped paper container main body 100 containing contents 30. The configuration of the laminated material 20 forming the paper container body is such that the innermost layer is a polyethylene layer 21, the intermediate layer has a foamed paper layer 22, the outermost layer is the paper layer 21, and the foamed paper is a gas-added type. The foaming agent is used, the density is 0.2 to 0.5 g / cm ³ , and the basis weight is 100 to 200 g / m ² .
[Selection] Figure 1

Description

  The present invention relates to a heat-insulating cup-shaped paper container that stores instant foods such as ramen, miso soup, soup, tea, coffee, etc. that are prepared by pouring hot water and eating and drinking and is easy to handle by hand. .

Conventional heat-insulating cup-shaped containers that store and use instant foods that are poured and poured in hot water when eating and drinking are easy to handle by hand when used, so that the container body has a heat-insulating foam. Polystyrene cup-shaped containers were generally widely used, but recently, from the standpoint of environmental protection, heat-insulating cup-shaped paper containers mainly made of paper that is easy to dispose of used containers are used. Came. As this heat-insulating cup-shaped paper container, the outer periphery of the cup-shaped paper container main body is combined with a heat insulating member, or the laminated material of the cup-shaped paper container main body is [inner layer side] polyethylene layer / paper layer / There existed what used the heat insulation laminated material which consists of foamed paper [outer layer side] composition (for example, refer to patent documents 1).
Japanese Utility Model Publication No. 4-22087

  However, in the above-described conventional heat-insulating cup-shaped paper container, a heat-insulating member is combined with the outer periphery of the former cup-shaped paper container. It became necessary, and the manufacturing cost of the container was inevitably high. For the heat-insulating cup-shaped paper container made of the heat-insulating laminated material of the latter [inner layer side] polyethylene layer / paper layer / foamed paper [outer layer side], the pattern and characters related to the product are displayed on the foamed paper on the outer surface of the container. When printing on the surface, the foamed paper surface is rough due to foaming, so the printability is poor, the appearance and cosmetics of the product are impaired, and the product value of the product is significantly reduced. It was.

  The present invention has a good thermal insulation property when the contents are stored in the container by pouring hot water into the contents and the outer surface of the container is touched by hand, and the appearance and beauty of the container are improved. In addition, the present invention provides a heat-insulating cup-shaped paper container that has good performance and is relatively inexpensive to manufacture.

  In other words, according to a first aspect of the present invention, there is provided a cup-shaped paper container in which a sheet-like lid material is heat-sealed and sealed at an upper opening of a cup-shaped paper container main body containing contents. The structure of the laminated material forming the paper container body is a heat-insulating cup-shaped paper container characterized in that the innermost layer is a polyethylene layer, the intermediate layer has a foamed paper layer, and the outermost layer is a paper layer. .

  The second invention of the present invention is the heat insulating cup-shaped paper container according to claim 1, wherein the foamed paper is a low-density foamed paper using a gas-added foaming agent. .

According to a third aspect of the present invention, the density of the foamed paper is 0.2 to 0.5 g / cm ³ and the basis weight is 100 to 200 g / m ^2. Item 3. The heat-insulating cup-shaped paper container according to Item 2.

  The heat-insulating cup-shaped paper container of the present invention has a foamed paper layer in the intermediate layer of the laminated material forming the paper container body, so when pouring hot water into the contents to cook and eat and drink the contents In addition, the heat insulation of the paper container main body is good, and even if the peripheral wall of the paper container main body is handled by hand, the peripheral wall is not hot and easy to use.

  Further, the heat insulating cup-shaped paper container of the present invention has a polyethylene layer as the outermost layer, and has good printability when the pattern or characters are printed on the surface of the paper container body, and the appearance and cosmetics of the container are impaired. Therefore, the product value of the product when it is displayed at the store becomes high.

  In addition, the heat insulating cup-shaped paper container of the present invention can be produced as it is with a conventional cup manufacturing machine by using a laminated material having a heat insulating foamed paper layer as an intermediate layer, and also imparts heat insulating properties. Therefore, the manufacturing cost of the container can be made relatively low.

  Next, an embodiment of the heat insulating cup-shaped container of the present invention will be described in detail with reference to the drawings.

  Fig.1 (a) is sectional drawing of the heat insulation cup-shaped paper container of this embodiment, FIG.1 (b) is explanatory drawing which shows the structure of the laminated material which forms the paper container main body.

  The structure of the heat insulating cup-shaped paper container (10) of the present embodiment is as shown in FIG. 1 (a), in the upper opening of the cup-shaped paper container main body (100) containing the contents (30). Since the sheet-like lid material (200) is heat-sealed so that it can be opened and sealed, and the paper container body has heat insulation properties, when hot water is poured into the contents to cook the contents and eat and drink, The outer peripheral surface of the peripheral wall of the container body is a cup-shaped paper container that is not hot and easy to handle by hand.

  The paper container main body (100) of the present embodiment is for manufacturing a laminated material with a cup making machine, and the structure thereof is as shown in FIG. The lower part is gradually narrowed, and a circular bottom wall (120) made of a sheet-like laminated material is wound around the lower end portion of the cylindrical peripheral wall (110) and heat-sealed. Further, a top curl portion (140) is provided around the upper end portion of the peripheral wall so as to be heat-sealed and heat-sealed so that the lid member (200) can be peeled off at the upper end of the peripheral wall.

  As shown in FIG. 1B, the innermost layer inside the container is a polyethylene layer (21) and the intermediate layer is a foamed paper layer (22). The outermost layer outside the container is the paper layer (23).

The foamed paper uses a gas-added foaming agent, and the density of the foamed paper is 0.2 to 0.5 g / in consideration of heat insulation when the peripheral wall of the container is used by hand. good in the range of cm ^3, the basis weight of the foam sheet, in consideration of the ease stiffness when using, those in the range of 100 to 200 g / m ^2.

  In addition, the sheet-like lid material is provided with a thermoplastic resin layer that is thermally peelable to the top curl portion of the paper container main body on the lowermost surface layer, and shown in FIG. In this manner, the opening knob piece (210) is projected.

(A) is sectional drawing of the heat insulation cup-shaped paper container of one Embodiment of this invention, (b) is explanatory drawing which shows the structure of one Embodiment of the laminated material which forms the paper container main body. .

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Thermal insulation cup-shaped paper container 20 ... Laminate material 21 ... Polyethylene layer 22 ... Foamed paper layer 23 ... Paper layer 30 ... Contents 100 ... Paper container main body 110 ... Perimeter wall 120 ... Bottom wall 130 …… Back pasting 140 …… Top curl portion 200 …… Sheet-like lid material 210 …… Opening knob piece

Claims (3)

  Structure of laminated material that forms the paper container body in the cup-shaped paper container in which a sheet-like lid material is heat-sealed so as to be openable and sealed at the upper opening of the cup-shaped paper container body containing the contents However, the heat insulating cup-shaped paper container is characterized in that the innermost layer is a polyethylene layer, the intermediate layer has a foamed paper layer, and the outermost layer is a paper layer.   The heat insulating cup-shaped paper container according to claim 1, wherein the foamed paper is a low-density foamed paper using a gas-added foaming agent. The heat insulating cup-shaped paper container according to claim 1 or ² , wherein the density of the foamed paper is 0.2 to 0.5 g / cm ³ and the basis weight is 100 to 200 g / m ² .

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