JPH04201840A - Heat insulated paper container - Google Patents

Abstract

PURPOSE:To prevent body walls from contact with each other even when a body of a longitudinal container is held by hand by a method wherein in a paper container the body of which is formed of double walls, the body walls are separated from each other by a spacer such as its own bending or any other member provided at a plurality of places, so that a space is formed between the body walls. CONSTITUTION:A heat insulated container is so formed that a body wall 11 of a container body 1 has a peripheral stepped part 12 at two places on an outer peripheral surface, these two peripheral stepped parts 12 serving to separate a body wall 21 of a sleeve 2 which is a packing member and the body wall 11 of the container body 1 largely from each other, and a space 3 for increasing heat insulating effect is formed between the body walls 11 and 21. The peripheral stepped part 12 can be formed suitably at a plurality of places, and usually at two places, one at an upper end part and the other on a lower side of the body wall 11. In particular, the position of the peripheral stepped part 12 on the lower side is determined in consideration of a position of a hand which holds the container for eating. The inner surface of the sleeve 2 which is the packing member is adhered to the outer surface of the peripheral stepped part 12 of the container body 1 and both are formed integrally and unseparably.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a container for storing instant noodles and the like, and more specifically to a paper insulated container that can be poured with boiling water and eaten as is.

[Conventional technology]

Currently, instant ramen and other products are mainly sold in cups, and the cups are made of plastic such as expanded polystyrene, which has excellent heat resistance and insulation effects. However, since these plastics are one of the causes of garbage pollution, an insulating paper container with a heat-insulating cavity 3 formed in the body as shown in Figure 7 has been proposed as an alternative. There is.

[Problem to be solved by the invention]

However, in the conventional paper heat insulating container shown in FIG. 7, the gap 3 between the body wall 11 of the container body 1 and the body wall 21 of the sleeve 2, which is the exterior material, is narrower at the bottom. was common. Moreover, it was common to eat by holding the bottom side of the container, which had a long vertical structure. When you pour boiling water into the food, the heat and moisture will cause the body walls 11 and 21 to become soft, and the body walls 11 and 21 will come into contact with each other, damaging the insulation effect and making it too hot to hold in your hands. There was a problem. Therefore, there has been a strong desire to develop a paper container with excellent heat insulation properties so that the body walls of the vertically long container do not come into contact with each other even when the body is held by hand.

[Means to solve the problem]

The present invention has been made to solve the problems of the prior art as described above. The present invention provides an insulating paper container characterized in that the body walls are separated by a spacer, and a gap is formed between the body walls.

[Effect]

The double-formed body walls are separated from each other by bends of the body walls themselves provided at multiple locations or spacers made of separate members, so even if you hold the bottom side of the vertically long container with your hand, the body does not move. Since the walls do not touch each other, excellent insulation is maintained. Next, the present invention will be explained in detail based on the attached drawings.

[Example 1] Figures 1A and 1B show that the body wall 11 of the container body 1 has circumferential steps 12 at three locations on the outer peripheral surface, and these three circumferential steps 12 allow the exterior material to be This shows an insulated container in which most of the body wall 21 of a certain sleeve 2 and the body wall 11 of the container body 1 are separated, and a gap 3 is formed between the body walls to enhance the heat insulation effect. Although the circumferential step portion 12 can be formed at a plurality of appropriate locations, it is usually formed at the upper end and lower portion of the body wall 11. In particular, the lower circumferential step portion 12 is determined in consideration of the hand position when holding the container and eating. The inner surface of the sleeve 2, which is an exterior material, is adhered to the outer surface of the circumferential step portion 12 of the container body 1 by an appropriate means such as adhesive or heat sealing, and is integrated inseparably. The method for fixing the container body 1 and the sleeve 2 is to tighten the upper end of the body wall 11 to improve the strength of the opening end of the container body 1, and to tighten the body wall 21 of the sleeve 2 at the same time. It may be a method or the like. The body wall 11 and the bottom plate 13 of the container body 1 are made of paper whose inner surface is coated with a plastic film such as polyethylene, and the sleeve 2, which is the exterior material, is made of paper (when it is adhesively fixed to the container body 1 by heat sealing). It is easy to dispose of because it is made of polyethylene (covered with a heat-sealable film such as polyethylene). As described above, the insulating paper container according to the present invention has a double body wall 1
1 and 21 are separated by the three upper and lower circumferential steps 12\, so even if you hold the bottom side, the body walls will not easily come into contact with each other, so the insulation effect is great, and if it gets hot and you can't hold it. I don't have any concerns as mentioned.

[Embodiment 2] In the insulating paper container shown in FIG. 2, instead of the circumferential step 12 on the lower side of the body wall 11 in Embodiment 1, the lower end of the sleeve 2, which is an exterior material, has an appropriate thickness. forming a winding 22 of
The body walls 11 and 21 are separated from each other by an appropriate distance by the winding 22 and the circumferential step portion 12 at the upper end, and a gap 3 is formed in the heat-insulating container. In this case, the container body 1 and the sleeve 2 are also formed from a paper-based material.

[Embodiment 3] In the insulating paper container shown in FIGS. 3A and 3B, instead of the circumferential step 12 on the lower side of the body wall 11 in Embodiment 1, the middle lower part of the body wall 21 of the sleeve 2 Cuts 23 are formed in a U-shape at the plurality of cylinders, and the flaps 24 formed by the cuts 23 are bent approximately at right angles along the folding lines 25, and the tip portions are attached to the outer periphery of the body wall 11 of the container body 1. It is attached to the body wall 11 and 21 together with the circumferential step 12 at the upper end.
This is a heat insulating container in which a heat insulating cavity 3 is formed by separating the two at an appropriate interval. Container body 1 in this case
The sleeve 2 is also made of paper-based material.

[Embodiment 4] In the insulating paper container shown in FIGS. 4A and 4B, a tape having excellent heat insulating properties (for example, paper tape, ) is wrapped around the lower end of the container body 1 to an appropriate thickness (for example, 2.) as a spacer 4, and this spacer 4 and the circumferential step 1
This is a heat insulating container in which the body wall 11 and the body wall 21 of the sleeve 2 are spaced apart from each other at an appropriate interval by 2, and a gap 3 for heat insulation is formed. In this case, the container body 1 and the sleeve 2 are also formed from a paper-based material.

[Example 5] The insulating paper container shown in FIGS. 5A, 5B, and 5C has a plurality of notches 41 and fold lines 42 in place of the spacer 4 of the insulating tape used in Example 4. A spacer 4a whose part bulges outward like a lantern stick is attached to the lower part of the outer circumferential surface of the body wall 11 of the container body 1, and the body walls 11 and 2 are separated by this spacer 4a and the circumferential step 12 at the upper end.
This is a heat insulating container in which a gap 3 for heat insulation is formed by separating the two spacers 1 and 1 at an appropriate interval. In this case, the container body 1 and the sleeve 2 are also formed from a paper-based material.

[Embodiment 6] The insulating paper container shown in FIGS. 6A and 6B is manufactured by using a paper string having a diameter of 2 mm as a spacer 4b which is spirally connected to the body wall of the container body 1 at an appropriate interval, for example, 15N pitch. It is a heat insulating container in which the space between the body walls 11 and 21 is maintained constant through the outer peripheral surface of the body wall 11, and a gap 3 for heat insulation is formed. , adhesive is applied to the paper string of the spacer 4b,
The body walls 11 and 21 are inseparably glued together. Note that an appropriate number of spacers 4b in this case may be attached to the trunk wall 11 concentrically. In this case, the container body 1 and the sleeve 2 are also formed from a paper-based material.

【Effect of the invention】

As explained above, in the heat-insulating container of the present invention, the body walls are separated from each other by bending of the body walls themselves provided at multiple locations or by spacers made of separate members. Also, contact between the body walls is less likely to occur, and an excellent heat insulation effect is maintained. In addition, since it is an insulated container mainly made of paper, there is no problem when disposing of it, and compared to foamed polystyrene, etc., it is more suitable for printing, and beautiful printing is possible. Moreover, the appearance of the paper cup is hardly impaired, and if the paper cup is manufactured using the conventional paper cup manufacturing process, there is no particular increase in cost. In addition, if the exterior material is formed into a sleeve shape as in the embodiment, it is only necessary to wrap a fan-shaped paper around it, which makes it easier to mold than the one with a bottom, and it is also possible to reduce costs. Furthermore, by making the shape cylindrical, the force acting on the body is more dispersed than in a container with a polygonal structure.
Additional features include suppressing deformation, making it difficult for the body walls to come into contact with each other, and maintaining a good heat insulating effect.

[Brief explanation of the drawing]

Figure 1A is an explanatory diagram of Example 1, Figure 1B is an explanatory diagram of the container body, Figure 2 is an explanatory diagram of Example 2, Figure 3A is an explanatory diagram of Example 3, and Figure 3B is an explanatory diagram of Example 3. Figure 4A is an explanatory diagram of the developed sleeve, Figure 4A is an explanatory diagram of Embodiment 4, Figure 4B is an explanatory diagram of the spacer attached to the container body, Figure 5A is an explanatory diagram of Embodiment 5, and Figure 5B is an explanatory diagram of Embodiment 5. Figure 5C is an explanatory diagram of the spacer developed, Figure 5C is an explanatory diagram of the assembly when the spacer is attached, Figure 6A is an explanatory diagram of Example 6, and Figure 6B is an explanatory diagram of the spacer attached to the container body. FIG. 7 is an explanatory diagram of a conventional example. 1...Container body 11...Body wall 12...Surrounding stepped portion 13...Bottom plate 2...Sleeve 21...Body wall 22...Involvement 23...Notch 24... ...Flap 25...Folding line 3...Gap 4.4a14b...Spacer 41...Notch 42...Folding line Figure 1A Figure 1B Figure 2 Figure 7 22 lz Figure 5A Figure 6A Figure 5B Figure 5C a Figure 6B

Claims (1)

[Claims] In a paper container having a double-walled body, the body walls are separated from each other by their own bends provided at multiple locations or by spacers of separate members, and a gap is formed between the body walls. An insulated paper container characterized by: