CN223408345U - A paper cup - Google Patents

Abstract

The utility model provides a paper cup, belonging to the technical field of paper containers. It solves the problem of how to ensure the sealing of the paper cup seams while improving the efficiency of paper cup production and reducing the production cost. In this paper cup, the inner cup layer is provided with a folding area formed by bending the first end of the inner cup layer toward the outside of the inner cup layer. The waterproof membrane includes a second end of the waterproof membrane and a first end of the waterproof membrane. The thickness of the folding area is equal to the thickness of the inner cup layer. The outer side surface of the inner cup layer is also provided with an outer cup layer. The adjacent edge of the outer cup layer is in contact with or overlaps the outer edge of the folding area. The second end of the inner cup layer is located outside the adjacent edge, and the first end of the waterproof membrane is fixed to the second end of the waterproof membrane and the second end of the outer cup layer. In this solution, the inner cup layer does not need to be trimmed, which ensures the sealing of the paper cup seams while improving the efficiency of paper cup production and reducing the production cost.

Description

Paper cup

Technical Field

The utility model belongs to the technical field of paper containers, such as paper cups and paper bowls, and particularly relates to a paper cup.

Background

The paper cup is convenient to use, is generally used for containing water, coffee, milk and other liquids, is also used for containing alcohol at present, is also used for containing soup as a packing box after the size of some paper cups is large, so that the liquid or solid-liquid mixture can be conveniently carried, and has the advantages of low cost, portability and safety relative to a glass cup, and has the advantages of high temperature resistance and no pollution relative to a plastic cup, so that the application range of the paper cup is very wide.

The paper cup is produced by coating a waterproof film on the inner surface of a fan-shaped paper, forming the paper into a cylindrical shape by interlacing and bonding both edge portions of the fan-shaped paper, forming a folded portion folded inward at the lower end opening edge portion, and forming a flange portion curled outward at the upper end opening edge portion. In the process of interlacing and jointing the two end edge parts of the fan-shaped paper, at the interlacing joint position of the two end edge parts, the inner side surface of one end of the paper is lapped on the outer side surface of the other end of the paper, and as the waterproof film is not coated on the outer side surface of the paper, the situation of unstable adhesion occurs at the joint position, so that the liquid in the paper cup can leak out from the bonding position of the two end edge parts.

In order to solve the technical problem, through extending the waterproof film at paper cup tip for the waterproof film is whole slightly longer than the paper cup, when the paper cup is crisscross to be joined, the waterproof film surpasses the inboard that the one end of paper cup is located the paper cup, can glue completely at lateral wall seam department like this and cover one deck waterproof film, makes seam department completely isolated with interior flourishing liquid, has blocked the possibility that appears the seepage in seam department. The thickness of the waterproof film is small, deformation is easy to occur in the paper cup forming process, and the paper cup is inconvenient to form.

There is still another scheme of solving above-mentioned technical problem among the prior art, a paper cup with seepage prevention structure, paper cup includes composite wrapping paper, composite wrapping paper is formed by PE layer I, paper, PE layer II is compound, one side of composite wrapping paper is for rejecting the hem that half of composite wrapping paper was thick to form (for convenience seam crossing folding formation flange portion and turn back portion), the outside of hem is the deckle, deckle after the hem is folded bonds with PE layer I and forms the wrapping paper that has the hem, the wrapping paper that has the hem forms paper body through the overlap bonding. By performing edge folding treatment on the overlapping surface, liquid leakage is prevented, the contact between the section and food is avoided, and the safety and the sanitation are improved.

In the scheme, a pin edge device is additionally arranged in the process of removing half of the thickness of the composite packaging paper, but in the process of removing the composite packaging paper, a cutter in the edge device is easy to damage, so that paper cup forming is more troublesome, and the cost is increased.

Disclosure of utility model

The utility model aims to solve the problems in the prior art, and provides a paper cup, which aims to solve the technical problems of improving the paper cup manufacturing efficiency and reducing the paper cup manufacturing cost while ensuring the sealing performance of the joint of the paper cup.

The paper cup comprises an inner cup layer, wherein a waterproof film is arranged on the inner side surface of the inner cup layer, a folding area formed by bending the first end of the inner cup layer to the outer side of the inner cup layer is arranged on the inner cup layer, the waterproof film comprises a waterproof film second end positioned on the outer side surface of the folding area and a waterproof film first end positioned on the inner side surface of the second end of the inner cup layer, and the paper cup is characterized in that the thickness of the folding area is equal to that of the inner cup layer, an outer cup layer is further arranged on the outer side surface of the inner cup layer, the adjacent edge on the outer cup layer is in butt joint or lap joint with the outer edge of the folding area, the second end of the inner cup layer is connected with the second end of the outer cup layer and the outer side surface of the folding area, and the second end of the inner cup layer is positioned on the outer side of the adjacent edge.

In the scheme, the waterproof film is arranged on the inner side surface of the inner cup layer, the first end of the inner cup layer is bent to the outer side surface to form a folding area, the waterproof film is also arranged on the outer side surface of the folding area, the waterproof film is also arranged on the inner side surface of the second end of the inner cup layer, when the second end of the inner cup layer is fixed on the outer side surface of the folding area, the first end of the waterproof film, the second end of the waterproof film and the second end of the outer cup layer are mutually adhered, water is prevented from seeping out from a joint, the tightness of the joint of the paper cup is improved, the outer cup layer is arranged, the fall between the folding area and the outer side of the inner cup layer is reduced, the second end of the waterproof film is better attached to the second end of the waterproof film and the second end of the outer cup layer, and the first end of the waterproof film is simultaneously fixed on two parts of the cup body, namely the second end of the waterproof film and the second end of the outer cup layer, so that the joint of the paper cup is firmer. The paper cup in this scheme, interior cup layer need not to cut edge, can also improve the efficiency of paper cup preparation and reduce the cost of manufacture of paper cup when guaranteeing paper cup seam crossing leakproofness.

In the paper cup, when the adjacent edge is abutted against the outer edge, the adjacent edge is abutted against the outer edge or a space exists between the adjacent edge and the outer edge. When the paper cup is formed, the adjacent edge is abutted with the outer edge, after the paper cup is formed, the first end of the waterproof film and the second end of the waterproof film are integrated, so that the sealing effect of the paper cup is improved, and the joint of the paper cup is firmer.

In the paper cup, the upper ends of the inner cup layer, the folding area and the outer cup layer are curled outwards to form a rolling opening. The waterproof membrane first end is fixed on waterproof membrane second end and outer cup layer second end for interior cup layer, folding zone and outer cup layer second end are fixed inseparabler, and the upper end of paper cup is when outside turn-up, and outer cup layer second end is difficult to drop from interior cup layer, makes the mouth of rolling up of paper cup more firm.

In the paper cup, the outer cup layer and the folding area are adhered to the outer side of the inner cup layer.

In the paper cup, the outer cup layer comprises a first outer cup layer and a second outer cup layer, the second outer cup layer is located on the outer side of the first outer cup layer, and the first end of the waterproof membrane is fixed to the second end of the waterproof membrane and the first end of the second outer cup layer.

In the paper cup, the first end of the first outer cup layer comprises a first adjacent edge, the first adjacent edge is in butt joint with the outer edge and is in butt joint with the outer edge, the first end of the second outer cup layer comprises a second adjacent edge, the second adjacent edge is in lap joint with the outer edge, and the second adjacent edge is located outside the folding area and between the outer edge and the folded edge.

The first end of second outer cup layer is located the outside of first outer cup layer first end and folding portion, and first adjacent limit and outward flange appear coming off from interior cup layer lateral surface when the turn-up to reduce the paper cup, and the double-sided seal is formed between waterproof membrane first end and waterproof membrane second end to the second outer cup layer second end clamp for the paper cup is sealed the effect better in seam crossing.

In the paper cup, the first end of the first outer cup layer comprises a first adjacent edge, the first adjacent edge is in butt joint with the outer edge and is spaced from the outer edge, the first end of the second outer cup layer comprises a second adjacent edge, the second adjacent edge is in overlap joint with the outer edge, and the second adjacent edge is located outside the folding area and between the outer edge and the folded edge.

In the paper cup, the second end of the inner cup layer extends to the outer side of the first adjacent edge. By outer is meant herein that the second end of the inner cup layer is not in contact with the first abutting edge along the radial direction of the paper cup.

In the paper cup, the edge of the second end of the inner cup layer is positioned between the outer edge and the folded edge.

Compared with the prior art, the utility model has the following advantages:

1. In this paper cup, the butt limit forms an organic wholely with outside edge looks butt, waterproof membrane first end and waterproof membrane second end to make paper cup seam crossing more firm, interior cup layer need not to cut edge, can also improve the efficiency of paper cup preparation and reduce the cost of manufacture of paper cup when guaranteeing paper cup seam crossing leakproofness.

2. The waterproof membrane first end is fixed on waterproof membrane second end and outer cup layer second end for interior cup layer, folding zone and outer cup layer second end are fixed inseparabler, and the upper end of paper cup is when outside turn-up, and outer cup layer second end is difficult to drop from interior cup layer, makes the mouth of rolling up of paper cup more firm.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view showing the development of a paper cup according to the present utility model;

FIG. 3 is a schematic vertical cross-section of the present utility model;

FIG. 4 is an enlarged schematic view of the portion A of FIG. 3;

FIG. 5 is an enlarged schematic view of the portion B of FIG. 3;

FIG. 6 is a schematic transverse cross-sectional view of the present utility model;

fig. 7 is an enlarged schematic view of the portion C in fig. 6.

Fig. 8 is a schematic cross-sectional view of a paper cup in accordance with a second embodiment of the present utility model.

Fig. 9 is a schematic cross-sectional view of a paper cup in accordance with a third embodiment of the present utility model.

In the figure, 1, a paper cup, 2, an inner cup layer, 2a, an inner cup layer first end, 2b, an inner cup layer second end, 3, an outer cup layer, 3a, an outer cup layer first end, 3b, an outer cup layer second end, 3c, an adjacent edge, 4, a folding layer, 4a, an outer edge, 4b, a folded edge, 5, a cup body, 6, a rolling mouth, 7, a cup bottom, 7a, a cup foot, 8, a waterproof film, 8a, a waterproof film first end, 8b, a waterproof film second end, 9, a first outer cup layer, 9a, a first outer cup layer first end, 9b, a first outer cup layer second end, 9c, a first adjacent edge, 10, a second outer cup layer, 10a, a second outer cup layer first end, 10b, a second outer cup layer second end, 10c, and a second adjacent edge.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Example 1

As shown in fig. 1 and fig. 2 in combination with fig. 6 and fig. 7, in this embodiment, the whole paper cup 1 presents a hollow flaring-shaped cup body 5 structure, the cup body 5 is formed by bending fan-shaped paper, the fan-shaped paper is a double-layer structure, and mainly includes an inner cup layer 2 and an outer cup layer 3, the thickness of the general paper is 50g/m ²-350g/m², the thicknesses of the inner cup layer and the outer cup layer in this embodiment are both 150g/m ², and the thicknesses of the paper of the inner cup layer and the outer cup layer can also be different. The double-layer paper cup 1 plays a role in preventing scalding, and the paper cup 1 has thicker hand feeling during use and better use experience.

The outer cup layer 3 is fixedly arranged on the outer side surface of the inner cup layer 2, the waterproof film 8 is arranged on the inner side surface of the inner cup layer 2, and the waterproof film 8 prevents liquid in the paper cup 1 from directly contacting with the inner cup layer 2 to wet the inner cup layer 2, so that liquid is prevented from leaking from the paper cup 1. The first end 2a of the inner cup layer is folded directly outwards along the folded edge 4b to form a folded layer 4, and the thickness of the folded layer 4 is equal to that of the first end 2a of the inner cup layer. The inner side of the folded layer 4 is fixed on the outer side of the inner cup layer 2, and the outer side of the folded layer 4 is provided with a second end 8b of the waterproof film. The outermost edge of the folded layer 4 is the outer edge 4a. In this embodiment, the abutment edge 3c of the first end 3a of the outer cup layer abuts against the outer edge 4a of the folded layer 4, where "abutting" means that the first end 3a of the outer cup layer and the outer edge 4a of the folded layer 4 are in contact but do not overlap. Alternatively, there may be a space between the abutment edge 3c and the outer edge 4a. The second end 3b of the outer cup layer is flush with the second end 2b of the inner cup layer.

The outer cup layer 3 and the folding zone 4 are adhered to the outer side of the inner cup layer 2, the inner cup layer 2 is bent, and the inner side surface of the second end 2b of the inner cup layer is fixedly connected with the outer side surface of the folding layer 4 to form a joint. Ultrasonic heating is used to the seam, waterproof membrane second end melts and fixes on outer cup layer first end 3a, simultaneously, waterproof membrane first end 8a and waterproof membrane second end 8b form integratively, cup shaping after the waterproof membrane cooling of seam, the liquid in paper cup 1 is difficult to follow foretell seam seepage away, and waterproof membrane first end 8a forms integratively after fixed with waterproof membrane second end 8b, the sealed effect of paper cup has been improved, and make paper cup seam department more firm, interior cup layer need not to cut edge, can also improve the efficiency of paper cup preparation and reduce the cost of manufacture of paper cup when guaranteeing paper cup seam department leakproofness.

As shown in fig. 3 in combination with fig. 2, 4 and 5, a rolling opening 6 and a cup bottom 7 are arranged above the paper cup 1. The rolling opening 6 is formed by winding the upper part of the inner cup layer 2 outwards after the cup body 5 is bent into a hollow flaring shape, and the folding layer 4 and the outer cup layer 3 outside the inner cup layer 2 also wind outwards along with the inner cup layer 2 to form the rolling opening 6. The cup bottom 7 and the cup body 5 of the paper cup 1 are of split type structures, and the mounting process of the cup bottom 7 and the cup body 5 mainly comprises the steps that after the cup body 5 is bent into a hollow flaring shape, part of paper below the inner cup layer 2 is bent inwards, the folding layer 4 and the outer cup layer 3 outside the inner cup layer 2 are bent inwards along with the inner cup layer 2, grooves are formed in the cup walls of the inner cup layer 2 and the cup body 5, and the cup feet 7a on two sides of the cup bottom 7 are inserted into the grooves and fixed, so that the cup bottom 7 and the cup body 5 are fixedly connected.

Example two

As shown in fig. 8, the structure of this embodiment is substantially the same as that of the first embodiment, and in this embodiment, the outer cup layer includes a first outer cup layer 9 and a second outer cup layer 10, the second outer cup layer 10 is located outside the first outer cup layer 9, and the lateral length of the second outer cup layer 10 is greater than that of the first outer cup layer, and the waterproof film first end 8a is fixed to the waterproof film second end 8b and the second outer cup layer first end 10 a. The first outer cup layer first end 9a includes a first abutment edge 9c, the first abutment edge 9c abutting and contacting the outer rim 4a, alternatively the first abutment edge 9c abutting and spaced from the outer rim 4 a. The second outer cup layer first end 10a includes a second abutment edge 10c, the second abutment edge 10c overlapping the outer rim 4a, the second abutment edge 10c being located outside the fold region 4 and between the outer rim 4a and the flap 4b, and the rim of the inner cup layer second end 2b being located between the outer rim 4a and the flap 4 b.

Example III

As shown in fig. 9, the structure of the third embodiment is substantially the same as that of the second embodiment except that the second end 2b of the inner cup layer extends to the outside of the first abutting edge 9c, where the outside means the outside in the diameter direction of the paper cup, and the second end 2b of the inner cup layer is not in direct contact with the first abutting edge 9 c.

The terms "first end" and "second end" as used herein refer to the sides of the layers of the paper cup extending inwardly a distance.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms 1, paper cup, 2, inner cup layer, 2a, inner cup layer first end, 2b, inner cup layer second end, 3, outer cup layer, 4, folded layer, 4a, outer rim, 4b, hem, 5, cup, 6, roll neck, 7, bottom of cup, 7a, bottom of cup, 8, waterproofing membrane, 8a, waterproofing membrane first end, 8b, waterproofing membrane second end, etc. are used more herein, the possibility of using other terms is not precluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims (9)

1. The utility model provides a paper cup, includes interior cup (2), the medial surface of interior cup (2) on be equipped with water proof membrane (8), interior cup (2) on be equipped with fold area (4) by interior cup first end (2 a) to the outside bending formation of cup (2), water proof membrane (8) including be located waterproof membrane second end (8 b) of fold area (4) lateral surface and be located waterproof membrane first end (8 a) on interior cup second end (2 b) medial surface, a serial communication port, the thickness of fold area (4) and the thickness of interior cup (2) equal, the lateral surface of interior cup (2) still be equipped with outer cup (3), the lateral surface of outer cup (3) on adjacent limit (3 c) with fold area (4) connect or overlap joint mutually, interior cup second end (2 b) and outer cup second end (3 b) and fold area (4) lateral surface connect waterproof membrane first end (8 a) on the second end (3 b) and the second end (3 b) of being located the outer cup (3 b) and the waterproof membrane of second end (8 b) outside.

2. A paper cup according to claim 1, characterized in that said abutment edge (3 c) abuts against the outer rim (4 a) or that said abutment edge (3 c) is spaced from the outer rim (4 a) when said abutment edge (3 c) abuts against the outer rim (4 a).

3. A paper cup according to claim 2, characterized in that the upper ends of the inner cup layer (2), the folding zone (4) and the outer cup layer (3) are curled outwards to form a curl (6).

4. A paper cup according to claim 3, characterized in that the outer cup layer (3) and the fold (4) are glued to the outer side of the inner cup layer (2).

5. A paper cup according to claim 1, wherein the outer cup layer comprises a first outer cup layer (9) and a second outer cup layer (10), the second outer cup layer (10) being located outside the first outer cup layer (9), the first end (8 a) of the waterproof membrane being fixed to the second end (8 b) of the waterproof membrane and the first end (10 a) of the second outer cup layer.

6. The paper cup according to claim 5, wherein the first outer cup layer first end (9 a) comprises a first abutment edge (9 c), the first abutment edge (9 c) being in abutment with the outer rim (4 a), the second outer cup layer first end (10 a) comprises a second abutment edge (10 c), the second abutment edge (10 c) being in abutment with the outer rim (4 a), the second abutment edge (10 c) being located outside the fold region (4) and between the outer rim (4 a) and the flange (4 b).

7. The paper cup as claimed in claim 5, wherein the first outer cup layer first end (9 a) comprises a first abutment edge (9 c), the first abutment edge (9 c) abutting against the outer rim (4 a) and being spaced from the outer rim (4 a), the second outer cup layer first end (10 a) comprises a second abutment edge (10 c), the second abutment edge (10 c) overlapping the outer rim (4 a), the second abutment edge (10 c) being located outside the fold region (4) and between the outer rim (4 a) and the flap (4 b).

8. A paper cup according to claim 6 or 7, characterized in that the second end (2 b) of the inner cup layer extends outside the first abutment edge (9 c).

9. A paper cup according to claim 6 or 7, characterized in that the edge of the second end (2 b) of the inner cup layer is located between the outer edge (4 a) and the flange (4 b).