JP2000168762A - Heat-insulated paper-made container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the refuse pollution and the fouling by the environmental hormone, to reinforce the heat insulation effect and the holding strength, and to improve the printability. SOLUTION: A downwardly tapered corrugated fiberboard cylindrical body 3 is formed by adhering short sides of a corrugated fiberboard sheet 1 of arc-like strip to each other at a joining part 2, a downwardly tapered paper cup 4 in which the lower diameter is smaller than, and the upper diameter is larger than the upper inside diameter is fitted in the cylindrical body 3, and the downwardly tapered outer circumferential surface of the cup is received by the downwardly tapered inner circumferential surface of the corrugated fiberboard cylindrical body to hold the cup by the corrugated fiberboard cylindrical body. A holding piece 1B is provided on each side in the longitudinal direction of the corrugated fiberboard sheet through an outward folding line 1A, the holding pieces 1B are attached to each other at the joining part 2 while folding the sheet in the longitudinal direction with its corrugated paper 1C inside, and a downwardly tapered corrugated fiberboard cylindrical body 3 having the holding pieces is formed. The downwardly tapered cup 4 in which the lower diameter is smaller than, and the upper diameter is larger than the upper inside diameter is fitted in the cylindrical body to hold it by the holding piece 1B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper heat insulating container suitable for storing a heat-processed dry food, a cold food or the like in a cup and allowing a user to pour hot water into the cup.

[0002]

2. Description of the Related Art Conventionally, as this kind of heat insulating container, a heat insulating container molded from a foamed resin such as styrene foam is mainly used. Has recently been found to be toxic, and since the foamed resin does not rot,
A large amount of waste could not be discarded as it was, and high heat was generated when the used containers were incinerated, which shortened the life of the furnace and generated harmful gases and increased bulk, which was troublesome and troublesome for waste disposal.

As other heat insulating containers, there are those conventionally described, for example, in Japanese Utility Model Application Laid-Open No. 56-94713 and Japanese Patent Application Laid-Open No. 50-36284. This conventional technique has an extremely small taper, and has a cylindrical mantle body having a large-diameter end formed with an outwardly curved flange at its large-diameter end, and a taper that is larger than the taper. The outer diameter of the large-diameter side end is equal to the inner diameter of the large-diameter side end of the mantle body, and is curved outward at the large-diameter side end to form a concentric flange with the flange. And a flanged lid fitted to the flange of the container.

In this prior art, since the upper inner peripheral surface of the outer jacket is in direct surface contact with the upper outer peripheral surface of the container, the heat of the food in the inner container is placed on the upper portion of the outer jacket. In the case of hot food such as instant noodles with hot water poured into the food in the thickness direction, the fingers holding the upper part of the jacket will suddenly become hot and cause burns or prevent finger burns. Therefore, there is a problem that hot food or boiling water may be dropped together with the inner container by releasing the hand from the mantle.

[0005] In addition to the above, there is a conventional cup with a gripper described in, for example, Japanese Utility Model Laid-Open Publication No. 52-105585. According to this conventional technique, a concave portion having an arbitrary shape is formed on an outer surface of a cup body made of paper, a thin synthetic resin, or the like, and an upright handle is located in the concave portion, and the handle is formed upright. As shown in FIG.

If this cup has a portion other than the handle, fingers may become hot due to poor insulation, and the handle is likely to protrude from the cup peripheral surface and is unstable.
When a large number of cups stacked in a vending machine are automatically moved one by one to a drip stage by a robot arm in the vending machine, adjacent cups are separated from each other and cannot be easily adopted. For this reason, as a heat insulating gripping tool used by a user in addition to a paper cup suitable for a vending machine, there is a conventional one described in, for example, Japanese Utility Model Registration No. 3044075.

In this conventional technique, a frame body including a locking portion, a grip portion, and a contact portion is formed by plastic injection molding, and the grip portion has a substantially U-shape in a side view when viewed from the side. The index finger of the user is hung on the hollow portion, the upper outer wall is pressed with the thumb, the lower outer wall is supported by the middle finger, and can be lifted, and the upper end of the grip portion is connected to the locking portion,
The lower end of the grip portion is connected to the contact portion, the contact portion contacts the outer wall of the cup, and has a curved portion of an appropriate length above the outer wall, and the inner surface of the curved portion is locked. A holding space is formed at an appropriate distance from the outer wall of the cup, and the upper side wall of the cup inserted from below into the holding space is held between the outer wall of the locking portion and the upper end of the curved portion. The upper end portion of the curved portion is locked to the upper end portion of the cup by sandwiching the inside of a flange formed by bending outward, and the upper end portion of the curved portion has an appropriate distance from the stopper block of the locking portion above it. The locking portion has a substantially inverted U-shape. The upper portion of the outer wall and the curved portion of the contact portion maintain an appropriate distance from each other, and a relatively large-area arc is formed at the lower end of the outer wall. A stop block is formed inside the upper wall of the locking portion, and the stop block is fitted to the upper end of the curved portion of the contact portion. The cup is clamped in the clamping space between the curved portion of the contact portion and the outer wall of the locking portion, and the inside of the flange at the upper end of the cup is locked at the upper end of the curved portion of the contact portion. , By holding the outside of the cup flange with the stop block of the locking part, it can be held without swinging the cup,
It is said that the outer wall of the locking portion provides the action of tightening the cup due to the gravity of the beverage in the cup, so that the cup can be held stably and can be used for gripping the user and preventing burns. is there.

[0008]

The above-mentioned prior art is based on the problem that the hot cup cannot be held due to poor heat insulation, except for the gripping piece, and the gripping piece is a thick solid object formed by plastic molding. It is difficult to add the vending machine as an accessory to the drinking cup, and it is a gripper for a curled flange that is curled by curling the opening edge of the cup outward, so it can not be used for a cup without a flange, so the cup flange must be horizontal. There are a number of essential and significant problems that are not applicable to flanged cups that are only overhanging.

In addition, since the portion referred to as the locking portion for the curl flange clamp in this conventional example needs to be made precisely with precise dimensional accuracy corresponding to the above-mentioned curl flange, the above-mentioned number of curl shape types of the cup is required. The second problem is that various types of grippers with different locking part shapes are required, and management, maintenance and inspection in all systems, such as production, storage, distribution, sales, purchase and use, are complicated and uneconomical. There is also.

Further, in this conventional example, since the plastic handle does not rot, the used handle is incinerated. The high heat generated during the incineration shortens the life of the furnace and causes pollution due to generation of harmful gas. There is also a problem in that so-called “environmental hormones” such as bisphenol A and dioxin, which have recently become a problem, are caused by fillers, softeners, and the like mixed in the molding plastic. In addition, as disclosed in Japanese Patent Application Laid-Open No. 50-30675, a vertical bellows cylinder is made by passing a metal foil or a paper cylinder as it is between openable and foldable folding rollers, and a paper cup is forcibly fitted into the cylinder. There are also examples.

However, in this conventional example, a cylindrical body made of paper, plastic thin plate, aluminum foil, or the like is inserted one by one into one roller of an openable / closed / separable creasing roller pair, and then the other roller is inserted. By rotating each roller while pressing tightly on the outer peripheral surface of the cylindrical body, after making a number of vertical folds parallel to the cylindrical body, open the rollers apart and remove the cylindrical body alone from the rollers to form a product Therefore, every time the tubular body is vertically creased one by one, the pair of crease rollers must be opened / closed and separated to insert / remove the tubular body, which is cumbersome and cumbersome. There is an essential problem that the workability is poor and the cost is high, which is uneconomical.

Further, the vertical bellows cylinder in this conventional example is
The outer diameter is extremely variable and unstable, so the fitting position to the cup is easy to change. Moreover, the cylindrical surface has the vertical bellows, so the mechanical strength of the ridgeline is weak and the fingers are gripped. There are many problems such as being easily crushed by pressure, being inconvenient to use, and not being able to perform continuous beautiful surface printing.

The present invention has been made in order to eliminate many problems in the above-mentioned conventional examples. The purpose of the present invention is to use paper obtained from natural resources as a heat insulating container material. By preventing toxic pollution and harmful substances caused by environmental hormones, and by using corrugated cardboard for the heat-insulating outer cylinder, the heat conduction that is directly transmitted in the thickness direction is eliminated, and the heat-insulating effect is enhanced, and the grip strength for the cup is enhanced. By making it a heat-insulating cylinder made of cardboard, the appearance of the cylinder surface is improved, and by improving the printability, and by making the heat-insulating cylinder that can be folded flat,
Easy to add and provide as an accessory to the cup, and by supporting the lower thin cup in the upper expanding cylinder, it fits well with cups with slightly different sizes and cups with different flange shapes The purpose is to make compatible use possible.

[0014]

SUMMARY OF THE INVENTION An object of the present invention is to form a heat insulating container in which a lower thin cup is covered with an outer cylinder. By gluing, a lower cardboard cylinder 3 is made.
A lower thin paper cup 4 having a lower diameter smaller than the upper inner method and a larger upper diameter is fitted therein, and the lower thin outer peripheral surface of the cup 4 is received by the lower thin inner peripheral surface of the corrugated cardboard body 3 to form the cup 4. Can be gripped by the cardboard cylinder 3.

Further, in a heat insulating container in which an outer cylinder is covered on a lower thin paper cup, gripping pieces 1B are respectively provided on both sides in the longitudinal direction of the arc-shaped strip-shaped corrugated cardboard sheet 1 through outward folding lines 1A.
The gripping pieces 1B are joined together at the joint 2 while the sheet 1 is folded in the length direction with the corrugated paper 1C inside, thereby forming the lower thin corrugated cardboard cylinder 3 with the gripping pieces. The lower thin cup 4 whose lower diameter is smaller and whose upper diameter is larger than that of the upper inner method is fitted into the cylindrical body 3,
The lower thin outer peripheral surface of the cup 4 may be received by the lower thin inner peripheral surface of the cylindrical body 3 so that the cup 4 can be gripped by the gripping piece 1B. Further, gripping pieces may be protrudingly provided on both left and right sides of the corrugated cardboard cylinder, and a “hit” mark may be provided on a sheet surface which is an inner surface of the cylinder.

[0016]

Embodiments of the present invention will be described with reference to the drawings. First, in the basic embodiment of the present invention, in producing an insulated container in which an outer cylinder is covered on a lower thin cup, an arc-shaped strip-shaped corrugated cardboard sheet 1 as shown in FIG.
1 (b) by bonding the short sides of each other at the joint portion 2 as shown in FIG. 1 (b) to form a lower-thin corrugated cardboard cylinder 3 inside the cylinder 3. As shown in FIG. 1D, a lower thin paper cup 4 having a smaller lower diameter and a larger upper diameter is fitted as shown in FIG. As shown in FIG. 1 (d), the cup 4 is received by a number of formed ridges 1d and the cup 4 is corrugated.
It can be gripped with. The virtual line 1A in FIG. 1 (a) is a fold line, and the portion indicated by reference numeral 1B is a gripping piece, which is formed by projecting the gripping piece 1B on the cylindrical body 3 in the present invention. Sheet 1 in advance
In advance.

The heat-insulating gripper for a paper or plastic molded cup according to the present invention thus manufactured is crushed and folded in the sheet length direction as shown in FIG. 1 (b). By doing so, it can be flattened and can be easily provided as an accessory for the cup. Then, the purchaser simply spreads the flat thing as shown in FIG. 1 (b) and makes it three-dimensional as shown in FIG. 1 (c), and places the lower thin cup 4 in the cylindrical body 3 as shown in FIG. ), The cup 4 can be fitted and supported in a good fit state, and the cup 4 can be stably insulated and grasped by the finger a insulated through the cylindrical body 3, and the hot beverage or food in the cup 4 can be grasped by the finger a. Can be drunk or eaten without heating.

Next, in order to protrude the gripping pieces 1B on the outer peripheral surface of the corrugated cardboard cylinder 3 according to the present invention, the arc-shaped strip-shaped corrugated cardboard sheet 1 as shown in FIG. The gripping pieces 1B are connected to each other via the outward fold lines 1A, and the sheet 1 is folded in the length direction with the corrugated paper 1C inside, and the gripping pieces 1B are joined to each other at the joining portion 2 to form the corrugated paper 1C. Fig. 2
The lower corrugated cardboard cylinder 3 with the gripping pieces as shown in FIGS. A lower thin cup 4 having a smaller lower diameter and a larger upper diameter than the upper inner method is fitted into the cylindrical body 3, and the lower narrow outer peripheral surface of the cup 4 is fitted to the cylindrical body 3.
The cup 4 can be gripped by the gripping piece 1B while being received by the lower narrow inner peripheral surface.

The bonding portion 2 of the gripping piece 1B may be glue-bonded, but it may be a polyethylene coat applied to the surface of the corrugated paper 1C of the sheet 1 or the mating surface of the two-piece corrugated paper 1C. Heat-sealing adhesion of a coat layer or a laminate layer of a heat-adhesive resin such as a layer may be used. In addition, since each of the cylindrical bodies 3 is deformable and flexible in the circumferential direction, it can be well fitted to, for example, a square cup or a square deep dish container in addition to the circular cup of the previous example. The outer edge 4a is formed by curling the opening edge outward as shown in FIG. 1D, and the cylindrical body 3 may be covered on the cup 4 up to the outer flange. The cylindrical body 3 may be partially spotted and adhered.

Since the heat-insulating gripper according to the present invention thus produced is widened upward, the gripping piece 1B
Even if there is, the gripping pieces 3 are bent along the outer peripheral surface of the cup, and a large number of heat insulating containers can be polymerized and accumulated without being bulky, and can be efficiently transported from the manufacturer to the food manufacturer, and the food manufacturer heats the inside of the cup 4 After the cooked dried food and other things (not shown) are put in, the lid plate is airtightly adhered to the upper edge of the cup 4 and shipped.

The purchaser partially peels off the lid plate from the cup 4, pours hot water into the instant food in the cup, closes the lid, waits for about 3 minutes, and eats. Even if the user holds the cylindrical body 3 and eats it, the heat generated from the paper cup 4 causes the corrugated paper 1C of the corrugated paper 1C between the ridges 1D and the valleys 1E of the corrugated paper 1C as shown in FIG. It can be blocked by the hypotenuse 1F, and can prevent heat conduction that is directly transmitted in the thickness direction of the paper of the corrugated cardboard cylinder 3, and the outer surface of the cylinder 3 does not become hot, so that the cylinder 3 can be safely held by hand. The user can eat the food in the paper cup 4 while holding it.

Since the used container is made of paper which is a natural material as a whole, it is easy to dispose of trash and there is no harmful effect of environmental hormones, and since the cylinder 3 is made of corrugated cardboard, the corrugated cardboard cylinder 3 covered with the paper cup 4 Ridgeline part 1D even if you hold strongly by hand
And 1F of hypotenuse is not crushed, and even a container that is considerably heavy with liquid can be carried with confidence.

The cardboard cylinder 3 is provided with a gripping piece 1B.
2A and 2B, the gripping piece 1B or the cylindrical body 3 is held and eaten by hand. At this time, the gripping piece 1B is held by hand. Even if the user eats the cup 4, the cup 4 is positioned so as to be fitted firmly into the cylindrical body 3 so that the cup 4 does not slip off, and the heat coming out of the cup 4 can be cut off by the gripping piece 1B.
Can be eaten in the cup 4 while holding the hand.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to apply the present invention to a flat, large, and heavy cup such as a large instant noodle, a circular strip-shaped sheet 1 is folded at the center as shown in FIG. A predetermined range portion is crushed and attached to each other to form a gripping piece 1B, and another gripping piece 1B is formed on the opposite side of the cylinder where the gripping piece 1B is formed, similarly to the example shown in FIG. Then, a cylindrical body 3 as shown in FIG. 3 (a) is formed by projecting a total of two gripping pieces 1B, 1B, and a flat large-sized ramen cup 4 is fitted into this cylindrical body as shown in FIG. 3 (a). Then, the lower thin outer peripheral surface of the cup is received by a number of ridge portions 1d of the corrugated paper 1C on the lower thin inner peripheral surface of the cylindrical body 3, and the two gripping pieces 1B, 1B can be gripped with both hands. It may be an insulated gripper.

In this case, even a flat large and heavy cup can be stably and reliably carried in the manner of holding a two-handed pan.
In this example, even if both ends of the two arc-shaped strip-shaped sheets 1 are attached to each other, a two-handed heat-insulating gripper having two gripping pieces 1B, 1B can be obtained. Alternatively, corrugated paper 1C may be sandwiched between the inner and outer peripheral surfaces of the corrugated cardboard cylinder 3 as shown in FIG.

Further, as shown in FIG. 1 (c) and FIG. 4, a "hit" mark m is formed on the surface of the sheet 1 which is the inner surface of the cylindrical body 3 by characters or symbols at a ratio of about one sheet to 1000 sheets. By notation such as printing, the final user of the instant-heated food or the like is required to perform the operation of separating the two-folded two-ply sheet 1 attached to the food from the joint surface with his / her finger or the like by using “○○
By giving a prize such as "hot spring invitation", a kind of ambitious thrill can be given, and the end user can be competing in the work of making the tubular body 3 from the two sheets. It is possible to increase the willingness to purchase.

Furthermore, the heat-insulating gripper according to the present invention can select its aspect ratio arbitrarily according to the cup.
It can also be used as a gripper for a flatter or more elongated heat-insulating container. When the cylindrical body 3 is fixed to the cup 4 by spotting and bonding, for example, the cylindrical body 3
If a paper having a heat-adhesive synthetic resin layer such as a polyethylene laminate layer (a so-called poly-laminate layer) applied to the inner surface of the cup 4 or the outer peripheral surface of the cup 4 is used, the cylindrical body 3 is partially Both can be spotted and bonded only by heating and pressing.

Incidentally, the inner surface of the cup 4 may be coated with a polyethylene coat layer or a poly-laminate layer, and the lower portion of the cylindrical body 3 may be stopped at a position substantially higher than the bottom of the cup 4. Further, the outer flange 4a of the cup 4 is not necessarily required. However, in forming the outer flange 4a, the opening edge of a well-known paper cup may be curled by a curling machine. Flat flanges slightly extending in the lateral direction may be used, and the flanges 4a can further prevent the cup from slipping off the cylindrical body 3.

[0029]

The present invention adopts the above-described embodiment, and has the following effects. According to the first aspect of the present invention, since the heat-insulating grip of the cup to be additionally used for the cup is made of corrugated cardboard obtained from natural resources, the holder of the cardboard cylinder 3 as a grip is held. The fingers do not become hot, and the plastic molding of the insulated gripper becomes unnecessary, eliminating the harmful effects of environmental hormones and garbage pollution. In addition, the lower cup can be easily inserted and supported, and the lower cup is supported in a cylindrical body. There are many benefits that have become possible.

Further, the corrugated cardboard cylinder 3 according to the present invention.
Since the corrugated paper 1C on the inner surface thereof is adhered to the outer paper sheet, the strength of the corrugated paper 1C against external force is large, the corrugated paper 1C is stable without deformation, and the cup 4 can be securely and stably gripped by hand. Since the outer surface of the body 3 is a flat arc surface, it has excellent printability, enables continuous and beautiful printing on the outer surface of the cylindrical body, and has many effects such that a cup holder having a good appearance can be obtained.

Next, according to the second aspect of the present invention, since the gripping piece 1B protrudes outside the cylindrical body 3, the cup 4 can be gripped by this gripping piece, and the cup can be more easily held insulated. Was added.

Further, in the third aspect of the present invention, since the holding pieces 1B are present on both the left and right sides of the lower thin corrugated cardboard cylinder 3 placed on the cup 4, holding it with both hands allows a heavy content to be put. The effect that the flat large cup 4 can be easily and stably carried with good heat insulating properties can be added.

According to the fourth aspect of the present invention, a "hit" mark m is written on the surface of the base paper 1 serving as the inner surface of the cylindrical body 3 by characters or symbols at a ratio of about one sheet to 1,000 sheets. Therefore, the final user of the instant cooked food, etc., gives a prize to the work of separating the two-folded two-ply sheet 1 attached to the food from the joint surface with fingers or the like,
A kind of ambitious thrill can be imparted, and the end user can have an opposition to the work of making the tubular body 5 from the two-folded sheet, which can also increase the willingness to purchase. Could be added.

[Brief description of the drawings]

FIG. 1 is a schematic process diagram showing an example of a manufacturing process of a heat insulating gripper for a cup according to the present invention.

FIG. 2 is a perspective view showing another example of the heat insulating gripper for a cup according to the present invention.

FIG. 3 is a configuration diagram showing still another example of the heat insulating gripper according to the present invention.

FIG. 4 is a perspective view showing an example of a heat insulating gripper according to the present invention using a double-faced cardboard sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated cardboard sheet 1A Folding line 1B Grip piece 1C Corrugated paper 1D Corrugated ridge 1E Corrugated valley line 1F Corrugated paper 2 Joint 3 Corrugated cardboard cylinder 4 Cup mark per m

Claims (4)

[Claims] In a heat insulating container in which an outer cylinder is covered on a lower thin paper cup, short sides of an arc-shaped strip-shaped corrugated cardboard sheet are bonded together at a joint portion to form a lower thin corrugated cardboard cylinder. A lower thin paper cup 4 having a smaller lower diameter and a larger upper diameter than the upper inner method is fitted into the body 3, and the lower thin outer peripheral surface of the cup 4 is received by the lower thin inner peripheral surface of the cardboard cylinder 3. A heat-insulating paper-made gripper that enables the cup 4 to be gripped by the corrugated cardboard cylinder 3. 2. In a heat insulating container in which a lower paper cup is covered with an outer cylinder, gripping pieces 1B are continuously provided on both sides in the length direction of the arc-shaped strip-shaped corrugated cardboard sheet 1 via outward folding lines 1A, respectively. The sheet 1 is folded in the length direction with the corrugated paper 1C inside, and the grip pieces 1B are joined together at the joint portion 2 to thereby form the lower thin corrugated cardboard cylinder 3 with the grip pieces.
The lower thin cup 4 having a smaller diameter and a larger upper diameter than the upper inner method is fitted into the cylindrical body 3, and the lower thin outer peripheral surface of the cup 4 is placed under the cylindrical body 3. A heat-insulating container made of paper, which is received on a narrow inner peripheral surface and is capable of holding the cup 4 with the holding piece 1B. 3. Grasping pieces 1 on both sides of said corrugated cardboard cylinder 3.
3. The heat insulating container made of paper according to claim 2, wherein B and 1B are protruded. 4. The paper-made heat insulating container according to claim 1, wherein a “hit” mark m is provided on a sheet surface serving as an inner surface of the corrugated cardboard cylinder 3.