Corrugated paper cup
By setting transition indentations and lateral protrusions on the outer arc edge of corrugated paper cups, the problem of low forming efficiency in corrugated paper cup production is solved, achieving the formation of a round cup mouth and improving packaging efficiency, thus enhancing the convenience of production and packaging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- KRAFTPACK (HUBEI) IND CO LTD
- Filing Date
- 2024-01-25
- Publication Date
- 2026-07-21
AI Technical Summary
The existing corrugated paper cups have low forming efficiency in the production process, and it is difficult to form a complete circle at the cup mouth. In addition, attention needs to be paid to the relative position of the straight edge of the cup mouth during packaging, which leads to a decrease in production and packaging efficiency.
Transition indentations are set on the outer arc edge of the corrugated sheet, and combined with the transversely arranged protrusions, the straight edge is divided into several segments by the transition indentations, which facilitates bending to form a circular cup mouth. At the same time, it reduces the difficulty of folding during the winding process, and a connecting part is set on the substrate to reduce the thickness and connection strength.
It improves the production and packaging efficiency of corrugated paper cups, avoids interference between cups, and enhances aesthetics and ease of use.
Smart Images
Figure CN117963302B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of paper cups, and specifically relates to a corrugated paper cup. Background Technology
[0002] Paper cups are a commonly used packaging product in daily life, usually used to hold liquids such as water, beverages, or coffee. They are mainly composed of a fan-shaped sheet and a cup base. The cup body is formed by rolling the sheet and overlapping and bonding the two ends of the sheet. In order to prevent the rolled sheet from scratching the user's mouth and to improve the rigidity of the paper cup, the lack of a heat insulation layer will reduce the user experience when holding heated liquids.
[0003] To address the aforementioned issues, those skilled in the art have developed a method to create an insulation layer on the outside of a regular paper cup by adding a corrugated cardboard insert. This prevents the cup from overheating and affecting its usability. However, during the outward folding process to form the cup opening, the horizontally arranged texture on the corrugated cardboard results in variations in the position of the ribs on the outer arc edge of the corrugated cardboard, as the corrugated cardboard is primarily obtained through cutting. This makes it difficult to form a perfectly circular cup opening. Furthermore, when packaging multiple paper cups by stacking them, the presence of straight edges on the cup opening necessitates careful attention to the relative position of these straight edges between the upper and lower cups, leading to reduced forming efficiency during production. After packaging, the straight edges abut against the inner wall of another corrugated cardboard cup, making it difficult to remove the cup. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a corrugated paper cup. The technical problem to be solved by this invention is: how to improve the forming efficiency of production.
[0005] The objective of this invention can be achieved through the following technical solution: a corrugated paper cup, comprising a fan-shaped corrugated sheet and a cup bottom located below the corrugated sheet, wherein one end of the corrugated sheet is provided with a connecting portion overlapping the other end, the connecting portion being used to connect the two ends of the rolled corrugated sheet, characterized in that the outer arc edge of the corrugated sheet is provided with an outwardly folded edge, and one end of the corrugated sheet is provided with a transition indentation to facilitate the bending and forming of the corrugated sheet, the transition indentation being located on the folded edge, wherein when the corrugated sheet is rolled to form a cup body, the two ends of the folded edge cooperate and form a circular cup mouth through the transition indentation.
[0006] This application mainly involves bonding the two ends of a fan-shaped corrugated sheet together to form a cup body. The bottom of the cup is bonded to the inner arc edge of the corrugated sheet to form a complete corrugated paper cup. A rolled edge is provided on the outer arc edge of the corrugated sheet, allowing it to be rolled outwards to form the cup opening. Because a transition indentation is provided at the rolled edge, and this transition indentation is located at one end of the corrugated sheet, during processing, due to the overlap of the two ends and the relatively thick size of this area, and the influence of several protrusions on the corrugated sheet and the cup opening formed by the outward roll of the rolled edge, a straight edge is formed. Therefore, it is difficult to bend the connection point between the two ends of the corrugated sheet. This method involves creating a crease on the outer curved edge of the corrugated paper cup near the end of the corrugated paper. Specifically, a transition crease is placed near the point where a straight edge is formed after winding. This transition crease divides the straight edge into several segments, allowing the segments to be bent at a certain angle. Simultaneously, while bonding the two ends of the corrugated sheet to form the cup body and folding the rolled edge outwards to form the cup mouth, the transition crease divides the straight edge into several segments, facilitating bending and forming a round cup mouth. This improves forming efficiency during production, eliminating the need for relative position correction of the paper cups during packaging, thus enhancing packaging efficiency.
[0007] In the aforementioned corrugated paper cup, the corrugated sheet comprises corrugated paper and a substrate. Several protrusions are arranged transversely along the corrugated sheet, forming a texture. The transition creases overlap with the protrusions and form a certain angle. Because the corrugated sheet is composed of corrugated paper and a substrate, and the corrugated paper has several transversely arranged protrusions, these protrusions facilitate the outward folding of the rolled edge, forming an arc, reducing the difficulty of outward folding, and improving processing efficiency.
[0008] In the aforementioned corrugated paper cup, the transition crease and the protrusion form a certain angle. This angle facilitates bending during the winding process.
[0009] In the aforementioned corrugated paper cup, a rib is provided on the outer arc edge, and the transition indentation is located on the rib or completely covers the outer arc edge. By setting the transition indentation on the rib, the roundness of the cup rim can be further improved, thereby enhancing both packaging efficiency and the aesthetics of the corrugated paper cup itself.
[0010] In the aforementioned corrugated paper cup, the corrugated paper completely covers the substrate, and one side of the substrate extends outward to form a connecting portion. The two ends of the corrugated sheet are bonded together through the connecting portion on the substrate, thereby reducing the thickness while simultaneously reducing the connection strength by directly bonding the substrates together.
[0011] In the aforementioned corrugated paper cup, after the corrugated sheet is wound to form the cup body, the two ends of the corrugated sheet are connected by a coating adhesive on the corrugated sheet, and the texture on the corrugated paper is aligned or misaligned.
[0012] In the aforementioned corrugated paper cup, the angle between the connecting part and the bottom of the cup is an acute angle.
[0013] In the aforementioned corrugated paper cup, when the rolled edge is rolled outward to form the cup mouth, one end of the corrugated sheet with the connecting portion wraps around the other end and fits tightly together.
[0014] In the aforementioned corrugated paper cup, the corrugated sheet includes an outer arc edge that can be rolled to form the cup rim and an inner arc edge that is bonded to the cup bottom. After the corrugated sheet is rolled to form the cup body, the protrusion between the outer and inner arc edges is rolled to form a gripping part on the cup body. By flattening the inner and outer arc edges and forming a protrusion in the middle of the corrugated sheet, it is convenient to install the cup bottom and roll the cup rim.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] 1. This application mainly involves setting transition indentations on the outer arc edge of a corrugated sheet that can be rolled to form a cup body, and setting the transition indentations on the ribs of the outer arc edge of the corrugated sheet. While the corrugated sheet is rolled into shape and the outer arc edge of the corrugated sheet is folded outward to form the cup mouth, the transition indentations cause the rolled edge of the corrugated sheet to fold outward after rolling to form a circular cup mouth. This avoids the reduction in installation efficiency caused by the presence of straight edges, and improves both efficiency and aesthetics.
[0017] 2. By setting the substrate without corrugated paper as the connecting part and connecting the two ends of the corrugated sheet by adhesive bonding, the thickness is reduced while avoiding the reduction of connection strength caused by the adhesive bonding between the substrate and the corrugated paper. Attached Figure Description
[0018] Figure 1 This is a diagram showing the unfolded shape of a corrugated paper cup;
[0019] Figure 2 This is a cross-sectional view of a corrugated paper cup;
[0020] Figure 3 This is a schematic diagram of the transverse cross-section of a corrugated paper cup before it is rolled to form the cup mouth;
[0021] Figure 4 This is a schematic diagram of the unfolded corrugated sheet.
[0022] In the diagram, 1. Corrugated sheet; 1a. Connecting part; 1b. Rolled edge; 1c. Transition indentation; 1d. Outer curved edge; 1d1. Rib; 1e. Inner curved edge; 1f. Boss; 2. Cup bottom; 3. Cup body; 4. Cup mouth; 5. Corrugated paper; 5a. Protrusion; 6. Substrate; 7. Coating Detailed Implementation
[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. In this embodiment, the number of cups is at least two, and the present invention mainly adopts a combination of three cups.
[0024] like Figure 1 As shown, a corrugated paper cup of this application includes a corrugated sheet 1 and a cup bottom 2 located on the inner arc edge 1e of the corrugated sheet 1. The corrugated sheet 1 is composed of corrugated paper 5 and a substrate 6. The corrugated paper 5 has a plurality of protrusions 5a arranged laterally along the corrugated sheet 1. The protrusions 5a cooperate with each other to form a texture that runs through the fan-shaped corrugated sheet 1. On the corrugated sheet 1, one end of the substrate 6 completely covers the corrugated paper 5, and the other end extends outward to form a connecting part 1a. A transition indentation 1c perpendicular to the protrusions 5a is provided on the corrugated paper 5 near the connecting part 1a. The corrugated sheet 1 can be divided into an inner arc edge 1e that is bonded to the cup bottom 2, an outer arc edge 1d with the largest arc, and a cup body located between the two. The outer arc edge 1d has a rolled edge 1b that can be rolled outward, and the transition indentation 1c is located on the rolled edge 1b. As an alternative, the transition indentation 1c and the protrusion 5a are staggered and at a certain angle. The transition indentation 1c follows the curvature of the outer arc edge 1d and completely covers the outer arc edge 1d. The rib 1d1 is a protrusion 5a located on the outer arc edge 1d of the corrugated sheet 1.
[0025] like Figure 2 , Figure 3 as well as Figure 4 As shown, corrugated sheet 1 is wound, and the two ends of corrugated sheet 1 are bonded together by a coating 7 through a connecting part 1a to form cup body 3. The rolled edge 1b on the outer arc edge 1d of corrugated sheet 1 is folded inward, and a circular cup mouth 4 is formed by a transition indentation 1c. The transition indentation 1c is located on corrugated paper 5 and close to the connecting part 1a that bonds the two ends of corrugated sheet 1. After corrugated sheet 1 is wound to form cup body 3, the two ends of the protrusion 5a on corrugated sheet 1 are staggered. After corrugated sheet 1 is wound to form cup body 3, the two ends of the boss 1f intersect to form a gripping part.
[0026] This application mainly involves obtaining a corrugated sheet 1 by covering a corrugated paper 5 onto a substrate 6. To ensure the connection strength between the two ends of the corrugated sheet 1 after it is wound to form a cup body 3, the substrate 6 extends outwards at one end to form a connecting portion 1a. The corrugated paper 5 covering the substrate 6 has a texture formed by several protrusions 5a arranged laterally along the corrugated sheet 1. The corrugated sheet 1 is fan-shaped, with a rolled edge 1b on its outer arc edge 1d. After the two ends of the corrugated sheet 1 are bonded together by a coating 7 on the corrugated sheet 1, the rolled edge 1b on the outer arc plate can be folded outwards to form a cup mouth 4. Because the protrusions 5a on the corrugated paper 5 are arranged laterally along the corrugated sheet 1, the strength of the connection is reduced during the process of folding the outer arc edge 1d of the corrugated sheet 1 outwards via the rolled edge 1b. The difficulty of turning the low-curling edge 1b outward is reduced, but since the corrugated sheet 1 still needs to be wound and its two ends are bonded together by the connecting part 1a to form the cup body 3, since the corrugated sheet 1 is formed by the combination of the base material 6 and the corrugated paper 5, in order to facilitate the winding of the corrugated sheet 1, a transition indentation 1c is set on the rib 1d1 located on the outer arc edge 1d. The transition indentation 1c divides the rib 1d1 into several segments that can be bent at will, so that the outer arc edge 1d of the corrugated sheet 1 is divided into several segments by the protrusion 5a on the corrugated paper 5 and the transition indentation 1c, thereby facilitating the formation of a circular cup mouth 4 while winding. This avoids the interference between cup bodies 3 caused by straight edges during the packaging process, and avoids the need to correct the relative position of the cup bodies 3, thus improving the packaging efficiency of the corrugated paper cup 5. Furthermore, while a transition indentation 1c is set at the rolled edge, a boss 1f is provided between the outer arc edge 1d and the inner arc edge 1e on the corrugated sheet 1. After the corrugated sheet 1 is rolled to form a cup body 3, the two ends of the boss 1f intersect to form a gripping part, which is convenient for the user to hold.
[0027] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.
[0028] Although this document frequently uses terms such as 1. corrugated sheet; 1a. connecting part; 1b. rolled edge; 1c. transition indentation; 1d. outer arc edge; 1d1. rib; 1e. inner arc edge; 1f. boss; 2. cup bottom; 3. cup body; 4. cup mouth; 5. corrugated paper; 5a. protrusion; 6. substrate; 7. coating, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.
Claims
1. A corrugated paper cup, comprising a fan-shaped corrugated sheet (1) and a cup bottom (2) located below the corrugated sheet (1), wherein one end of the corrugated sheet (1) is provided with a connecting portion (1a) overlapping with the other end, the connecting portion (1a) being used to connect the two ends of the wound corrugated sheet (1), characterized in that, The outer arc edge (1d) of the corrugated sheet (1) is provided with a rolled edge (1b) that can be turned outward. One end of the corrugated sheet (1) is provided with a transition crease (1c) that facilitates the bending and forming of the corrugated sheet (1). The transition crease (1c) is located on the rolled edge (1b). The corrugated sheet (1) includes corrugated paper (5) and a substrate (6). Several protrusions (5a) are arranged along the transverse direction of the corrugated sheet (1) on the corrugated paper (5) and form a texture. The transition crease (1c) is intersected with the protrusions (5a) and forms a certain angle. The transition crease (1c) divides the protrusions (5a) into several segments. When the corrugated sheet (1) is rolled to form a cup body (3), the segments bend together to form a circular cup mouth (4).
2. The corrugated paper cup according to claim 1, characterized in that, The protrusion (5a) on the outer arc edge (1d) is a rib (1d1), and the transition indentation (1c) is located on the rib (1d1).
3. The corrugated paper cup according to claim 1, characterized in that, The corrugated paper (5) covers the substrate (6), and one side of the substrate (6) extends outward beyond the corrugated paper (5) to form a connecting part (1a).
4. The corrugated paper cup according to claim 1, characterized in that, The corrugated sheet (1) is provided with a coating (7). When the two ends of the corrugated sheet (1) are bonded together by the coating (7), the two ends of the protrusion (5a) are aligned or misaligned.
5. The corrugated paper cup according to claim 1, characterized in that, The angle between the connecting part (1a) and the bottom of the cup (2) is an acute angle.
6. The corrugated paper cup according to claim 1, characterized in that, The corrugated sheet (1) includes an outer arc edge (1d) that can be rolled to form the mouth of the cup and an inner arc edge (1e) that is bonded to the bottom of the cup (2). The outer arc edge (1d) and the inner arc edge (1e) are flattened to form a boss (1f) in the middle of the corrugated sheet (1). After the corrugated sheet (1) is rolled to form the cup body, the boss (1f) between the outer arc edge (1d) and the inner arc edge (1e) is rolled to form the grip part on the cup body (3).