Coffee drip bag
The coffee drip bag addresses manufacturing complexities and design limitations by incorporating a vented hanging part and separable lid, ensuring smooth extraction and eco-friendly materials, enhancing user convenience and design flexibility.
Patent Information
- Application Number
- PCT/KR2024/011279
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-21
- Filing Date
- 2024-07-31
- Publication Date
- 2025-09-25
AI Technical Summary
Existing coffee drip bags face manufacturing difficulties due to complex connections between the hanging design and lid, require separate handles, limit design diversity, and hinder smooth air escape, leading to slow or incomplete coffee extraction.
A coffee drip bag design featuring a filter part with a vent hole in the hanging part, a lid portion that seals the opening, and a bonding structure allowing easy separation and diverse design options, using eco-friendly materials.
The design enhances manufacturing ease, allows diverse design possibilities, ensures smooth coffee extraction by facilitating air escape, and improves user convenience and environmental friendliness.
Smart Images

Figure KR2024011279_25092025_PF_FP_ABST
Abstract
Description
coffee drip bag
[0001] The present invention discloses a coffee drip bag.
[0002] Coffee is a favorite beverage enjoyed by many people from young people to the elderly, and there are many different types, such as instant coffee, such as mixed coffee, and coffee made from whole beans.
[0003] Among them, coffee made by grinding coffee beans directly is preferred because of its superior taste and aroma as well as its flavor and sophistication.
[0004] However, since most instant coffee bags are packaged in disposable bags and are placed in offices or homes or are portable, you can enjoy it simply by pouring the disposable bagged coffee into a cup and mixing it with hot water, regardless of location. On the other hand, coffee beans are extracted using a coffee bean extractor and mixed with an appropriate amount of water. The process of extracting the coffee beans is cumbersome, and since these coffee bean extractors are quite expensive, there was a problem that ordinary people could not easily use them.
[0005] To address these issues, the applicant developed and proposed a coffee drip bag in Korean Patent Publication No. 10-2016-0085565 (prior document). The coffee drip bag described in the prior document has a simple configuration, allowing consumers to easily and conveniently enjoy high-quality coffee beans.
[0006] However, the coffee drip bag of the prior art has a structure in which the hanging design part and the lid are connected via a cut line, which presents a manufacturing difficulty in that a separate cut line must be formed between them. In addition, the coffee drip bag of the prior art requires a separate handle to be formed on the lid, which complicates the manufacturing process of the lid and limits the design of various lids. In addition, the coffee drip bag of the prior art has a disadvantage in that the hanging part is in close contact with the upper surface of the coffee cup, preventing the air inside the coffee cup from easily escaping, and causing the drip to proceed slowly or not smoothly.
[0007] The present invention has been proposed to solve the above problems, and its object is to provide a coffee drip bag that is easy to manufacture while improving user convenience.
[0008] In addition, the present invention aims to provide a coffee drip bag whose design can be more diversely changed or applied during the manufacturing process.
[0009] In addition, the present invention aims to provide a coffee drip bag having excellent environmental friendliness by using environmentally friendly materials.
[0010] In addition, the present invention aims to provide a coffee drip bag that allows air inside the coffee cup to easily escape, thereby enabling a smooth drip.
[0011] In order to solve the above-described problem, the coffee drip bag of the present embodiment comprises a filter part that receives coffee when the top is open, an opening formed in the center through which hot water flows, the filter part is fixed by joining it along the periphery of the opening, and a hanging part that is hung on the upper part of a coffee cup, and the hanging part forms a vent hole through which air inside the coffee cup is discharged.
[0012] Additionally, the vent hole may be formed by removing a portion of the lower surface of the catch that is in close contact with the upper portion of the coffee cup, or may be formed by the catch penetrating through the upper and lower portions.
[0013] Additionally, the filter portion may form an overlapping area in a portion that is bent to be coupled to the catch portion.
[0014] In addition, the coffee drip bag further includes a lid portion that is coupled to the upper surface of the hanging portion while shielding the opening, and the lid portion can be coupled to the hanging portion while forming an adhesive line along the periphery of the opening.
[0015] Additionally, the lid portion or the hanging portion may include a cutting line formed along the side of the bonding line.
[0016] In addition, the lid portion may form a cut line in which a plurality of holes are formed discontinuously, and may form a cut portion in an inner area of the cut line.
[0017] Additionally, the above-mentioned incision line may be formed in a concave or convex manner to form a pressing portion on the inside or outside.
[0018] The coffee drip bag of this embodiment uses eco-friendly paper material, so it is harmless to the human body and can provide excellent environmental friendliness.
[0019] In addition, the coffee drip bag of this embodiment can be used in various ways for advertising or promotional purposes, as the shape of the lid can be designed in various ways or an image can be implemented on the surface of the lid.
[0020] In addition, the coffee drip bag of the present embodiment can greatly improve the safety and convenience of use as the lid can be easily separated while being stably attached.
[0021] In addition, the coffee drip bag of the present embodiment can have high durability because the folded portion of the filter portion has an overlapping structure.
[0022] In addition, the coffee drip bag of this embodiment has a vent hole formed in the hanging portion so that dripping can be done smoothly.
[0023] Figure 1 is a perspective view showing a coffee drip bag according to one embodiment of the present invention;
[0024] Fig. 2 is a plan view showing the drip bag of Fig. 1;
[0025] Fig. 3 is a cross-sectional view in the II direction showing the drip bag of Fig. 2;
[0026] Fig. 4 is a plan view showing another example of the drip bag of Fig. 1;
[0027] Fig. 5 is a cross-sectional view taken along the line II-II of the drip bag of Fig. 4.
[0028] Fig. 6 is a bottom view showing a coffee drip bag according to another embodiment of the present invention;
[0029] Fig. 7 is a cross-sectional view taken along the direction III-III of the coffee drip bag of Fig. 6.
[0030] Fig. 8 is a plan view showing a coffee drip bag according to another embodiment of the present invention.
[0031] The technical objectives achieved by the present invention and its implementation will be made clear by the preferred embodiments described below. Hereinafter, preferred embodiments of the present invention will be examined in detail with reference to the attached drawings.
[0032] FIG. 1 is a perspective view showing a coffee drip bag according to one embodiment of the present invention, FIG. 2 is a plan view showing the drip bag of FIG. 1, FIG. 3 is a cross-sectional view taken along line II showing the drip bag of FIG. 2, FIG. 4 is a plan view showing another example of the drip bag of FIG. 1, and FIG. 5 is a cross-sectional view taken along line II-II showing the drip bag of FIG. 4.
[0033] As shown in these drawings, the coffee drip bag of the present embodiment includes a filter portion (100), a catch portion (200) to which the filter portion is fixed, and a lid portion (300) that covers an opening of the catch portion.
[0034] The filter unit (100) has a pouch-like shape with an open top so that ground coffee beans can be filled and accommodated therein. The filter unit (100) allows hot water to drip and the coffee to flow downwards as it is filtered. It can be made of a paper material that is harmless to the human body, and can have a mesh or porous structure.
[0035] The filter part (100) is supported by being joined to the catch part (200) at its upper end, and the portion in contact with the catch part (200) forms an overlapping area (110) by folding. The filter part (100) is joined to the catch part (200) while the upper end is bent horizontally. However, the portion in contact with the catch part (200) has relatively lower durability due to the deformation caused by the bending, and can be easily broken or torn. However, when the filter part (100) is bent while forming the overlapping area (110) as in the present embodiment, the durability of the bent portion is improved.
[0036] The hook (200) is configured to be hung on the upper part of a coffee cup so that the coffee drip bag can be mounted on the coffee cup. The filter part (100) is fixedly attached to the lower part, and the lid part (300) is attached to the upper part. For this purpose, the diameter of the hook (200) is formed to be larger than the diameter of the upper part of the coffee cup so that the hook (200) can be hung on the upper part of the coffee cup and mounted. The hook (200) can be made of eco-friendly paperboard.
[0037] In addition, the catch (200) can generally have a circular shape corresponding to the shape of the mouth of a coffee cup, and a circular opening (230) having a predetermined diameter is formed in the center. Accordingly, the catch (200) has a circular flange shape having a predetermined width. The opening (230) connects the inside and outside of the filter (100) so that ground coffee beans can be filled and hot water can drip.
[0038] In addition, the catch (200) connects the filter part (100) along the edge of the opening (230) and, when mounted on a coffee cup, allows the filter part (100) to be positioned inside the coffee cup. The catch (200) is made of a circular cardboard having an opening (230) formed in the center, and may include a first catch (210) at the top and a second catch (220) at the bottom so as to connect the filter part (100) to the center.
[0039] The first catch member (210) presses the upper surface of the filter part (100), and the second catch member (220) presses the lower surface of the filter part (100) so that the filter part (100) is joined therebetween. To this end, a PET coating layer may be applied to the lower surface of the first catch member (210) and the upper surface of the second catch member (220), and the filter part (100) may be joined by heat fusion using the PET coating layer.
[0040] The lid portion (300) is coupled to the upper surface of the catch portion (200) while shielding the opening (230) of the catch portion (200). Therefore, the lid portion (300) has a plate shape with a diameter at least larger than that of the opening (230).
[0041] The lid (300) is made of cardboard made of paper material used for food and beverages, and can have various shapes with a minimum diameter greater than that of the opening (230). In this embodiment, a circular lid (300) is exemplified, but various shapes such as a coffee bean shape, a star shape, a sunflower shape, and a square shape can be formed. In addition, although not shown, an advertising design can be printed on the surface of the lid (300).
[0042] In this way, the lid portion (300) of the present embodiment can be manufactured in various shapes separately from the catch portion (200), and images can be printed on the surface, thereby allowing for a wider selection of designs for the coffee drip bag. In addition, the lid portion (300) can be manufactured using paper material, thereby enabling the manufacture of an environmentally friendly coffee drip bag.
[0043] This lid part (300) is bonded to the catch part (200) by a thermal bonding process. For this purpose, a resin layer harmless to the human body is coated on the upper surface of the catch part (200) or the lower surface of the lid part (300). The lid part (300) is bonded to the catch part (200) by instantaneous thermal bonding applied along the periphery of the opening (230) while being placed on the upper surface of the catch part (200) so as to shield the opening (230). At this time, the thermal bonding may be applied in a circular shape along the periphery of the opening (230), and a circular bonding line (310) is formed. Accordingly, the lid part (300) and the catch part (200) are bonded along the bonding line (310) around the opening (230), and the bonding line (310) seals the filter part (100) from the outside between the lid part (300) and the catch part (200). At this time, the bonding line (310) can be formed continuously or discontinuously.
[0044] In addition, the lid part (300) is further formed with adhesive spots (not shown) that adhere to the catch part (200) at the edge area outside the adhesive line (310). A plurality of adhesive spots are formed at predetermined intervals along the circumference at the edge area of the lid part (300), and the lid part (300) and the catch part (200) are thermally adhered in a spot structure. The adhesive spots prevent the end of the lid part (300) from being separated from the catch part (200) due to external interference, and at the same time, the adjacent adhesive spots are maintained in a non-adhesive state, so that the user can easily separate the lid part (300).
[0045] In this way, the lid part (300) of the present embodiment is applied with a first bonding of a line structure and a second bonding of a spot structure, so that stable bonding is achieved between the lid part (300) and the catch part (200), and they can be easily separated, thereby improving convenience of use.
[0046] In addition, the coffee drip bag of the present embodiment has a cutting line (240) formed on the side of the adhesive line (310). The cutting line (240) may be formed by applying half cutting to the surface of the catch (200). In addition, the cutting line (240) may be formed on the inner side or the outer side of the adhesive line (310), or may be formed on both sides. In addition, the cutting line (240) may be formed by applying half cutting continuously or discontinuously. That is, the cutting line (240) may have a continuous line shape or a discontinuous dotted line shape.
[0047] This cutting line (240) prevents the surface of the catch (200) or the lid (300) from being torn by the adhesive line (310) when the lid (300) is separated from the catch (200). The lid (300) and the catch (200) are made of an environmentally friendly paper material and are bonded along the adhesive line (310). Therefore, when the lid (300) and the catch (200) are separated, the surface of the catch (200) may be torn together due to the adhesive force of the adhesive line (310). However, in the case where the cutting line (240) is formed on the side of the adhesive line (310) as in the present embodiment, even if the surface of the catch (200) is torn, the phenomenon of being torn at the cutting line (240) is prevented, thereby preventing irregular tearing.
[0048] This cutting line (240) is exemplified as being formed on the surface of the catch (200) (i.e., the upper surface of the catch), but may be formed on the surface of the lid (i.e., the lower surface of the lid) or on both sides.
[0049] Meanwhile, referring to FIGS. 4 and 5, the coffee drip bag of the present embodiment forms a cut portion (330) in the inner region of the lid portion (300) while forming a cut line (320). The cut line (320) is formed in the region of the opening portion (230), and functions to open the filter portion (100) by separating the cut portion (330) from the lid portion (300) along the cut line (320).
[0050] The cut line (320) may be formed by a plurality of holes that discontinuously penetrate the lid portion (300). The cut line (320) may have various shapes, such as a circular shape, a square shape, etc., and the shape is not limited thereto. It is preferable that the cut line (320) have a shape corresponding to the shape of the opening (230). In addition, the cut line (320) may have a closed circular shape or a square shape, and a configuration in which it is formed only in a certain area, such as a 'ㄷ' shape, is also possible.
[0051] In addition, the incision line (320) forms a pressing portion (340) on the inside or outside of the incision line (320) by having one side area concavely sunken or convexly protruding. In order to separate the incision portion (330) along the incision line (320), the user can first press and separate the pressing portion (340), thereby easily separating the entire incision portion (330) from the lid portion (300).
[0052] FIG. 6 is a bottom view showing a coffee drip bag according to another embodiment of the present invention, FIG. 7 is a cross-sectional view taken along the line III-III of FIG. 6, and FIG. 8 is a plan view showing a coffee drip bag according to another embodiment of the present invention.
[0053] According to the present embodiment, a coffee drip bag has a vent hole (250) formed in the hanging part (200). The vent hole (250) allows air inside the coffee cup (500) to escape to the outside, so that dripping can occur at a desired speed. In the coffee drip bag, dripping occurs while the hanging part (200) is hung on the upper part of the coffee cup (500), and the lower part of the hanging part (200) and the upper part of the coffee cup (500) are in close contact with each other due to the steam generated during the dripping, so that the inside and outside of the coffee cup (500) are sealed. At this time, the air or steam inside the coffee cup (500) cannot escape to the outside, and thus, dripping in the filter part (100) may not occur smoothly. Accordingly, by forming a vent hole (250) in the hanging part (200) to connect the inside and outside of the coffee cup (500), air and steam inside the coffee cup (500) can easily escape to the outside during drip, allowing the drip to occur smoothly.
[0054] The vent hole (250) of the present embodiment may be formed in the second catch member (220). Referring to FIG. 6, the catch member (200) is formed by a first catch member (210) at the top and a second catch member (220) at the bottom, and the lower surface of the catch member (200), for example, a part of the second catch member (220) is removed, and is formed. That is, the second catch member (220) forms a groove that is removed from the outer end to the inside by a predetermined width, and a vent hole (250) having a height corresponding to the thickness of the second catch member (220) is formed on the lower surface of the catch member (200) by the groove. Therefore, as illustrated in FIG. 7, air or vapor inside the coffee cup (500) can escape to the outside through the vent hole (250) formed between the upper surface of the coffee cup (500) and the lower surface of the catch member. A plurality of vent holes (250) can be formed at predetermined intervals along the circumference of the catch (200).
[0055] Additionally, the vent hole (250) may be formed in a hole shape that penetrates the edge of the catch (200) in the vertical direction. That is, as illustrated in FIG. 8, the vent hole (250) may be formed while penetrating both the first catch member (210) and the second catch member (220).
[0056] While exemplary embodiments of the present invention have been illustrated and described above, various modifications and alternative embodiments will be apparent to those skilled in the art. All such modifications and alternative embodiments are contemplated and encompassed by the appended claims, and do not depart from the true spirit and scope of the present invention.
Claims
1. A filter section that receives coffee with the upper part open; and, An opening is formed in the center through which hot water flows, and the filter part is fixed by being joined along the periphery of the opening, and a hanging part is included that is hung and mounted on the top of the coffee cup. A coffee drip bag in which the above-mentioned hanging part forms a vent hole through which air inside the coffee cup is discharged.
2. In the first paragraph, the vent hole, A coffee drip bag formed by removing a portion of the lower surface of the hanging part that is in close contact with the upper part of the coffee cup or by having the hanging part penetrate vertically.
3. In the first paragraph, the filter part, A coffee drip bag that forms an overlapping area in the part that is bent to be joined to the above-mentioned hook.
4. In paragraph 1, Further comprising a lid portion coupled to the upper surface of the hanging portion while shielding the opening; A coffee drip bag, wherein the lid portion is joined to the hanging portion while forming an adhesive line along the periphery of the opening.
5. In paragraph 4, A coffee drip bag, wherein the lid portion or the hanging portion includes a cutting line formed along the side of the adhesive line.
6. In paragraph 5, the lid part, A coffee drip bag having a cut line formed by discontinuously forming a plurality of holes, and a cut portion formed in an inner area of the cut line.
7. In paragraph 6, the incision line is A coffee drip bag with lines formed concave or convex to form a pressing portion on the inside or outside.
Citation Information
Patent Citations
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