JP7599735B2 - Coffee brewing bag structure - Google Patents

Description

The present invention relates to an ear-hook type coffee brewing bag structure.

The ear-hook coffee brewing bag structure mainly contains ground coffee powder in a filter bag, and the user can conveniently brew a cup of coffee by opening the package, hanging the ear-hook coffee brewing bag structure over a cup, and then pouring in an appropriate amount of hot water. Brewed coffee allows users to enjoy not only the convenience of instant coffee, but also the high quality and ritual of hand-dripping.

In conventional ear-hook coffee extraction bag structures, the filter bag portion is made of plastic material and the ear hook portion is made of paper. For this reason, it is necessary to use an adhesive to join the filter bag portion and the ear hook portion. Also, in order for the ear hook portion to maintain its strength when exposed to water, it is necessary to apply a wet paper strength enhancer to the surface of the paper ear hook portion. Both the adhesive and the wet paper strength enhancer are likely to be released into the extraction liquid when water is added and extraction is performed. Furthermore, because the filter bag portion and the ear hook portion are made of different materials, they cannot be recovered when the used extraction bag is disposed of.

In the conventional ear-hook coffee brewing bag structure, the ear hook is suspended from the edge of the cup, and the bottom of the filter bag is lower than the edge of the cup. If a lot of water is added at this time, the bottom of the filter bag will come into contact with the liquid surface, which will further affect the flavor of the brewed coffee.

The object of the present invention is to provide a coffee brewing bag structure in which the filter bag and the ear hooks are made of the same material, and when the ear hooks are hung over the edge of the cup, the bottom of the filter bag does not come into contact with the liquid in the cup, but is still held above the edge of the cup.

One embodiment of the present invention includes a filter bag made of a filter sheet and having a plurality of filter holes, and an ear hook portion, each of which is joined to the filter bag, and has an opening support sheet, a bottom support sheet, a central support sheet, and two side support sheets, and the central support sheet and the side support sheet have a support portion that connects the opening support sheet and the bottom support sheet, and two cross frames located on both the left and right sides of the ear hook portion, each having a connection portion and a convex portion, connected to each of the side support sheets via the connection portions, and forming a convex portion toward the bottom support sheet on the side closer to the central support sheet. The present invention provides a coffee extraction bag structure that includes a filter bag and an ear hook that are made of the same material, including polyethylene, polypropylene, polyester, polyamide, polyurethane, methyl methacrylate, or a copolymer or polymer blend of any two of them, and a plurality of pressing fold lines that are provided vertically on the opening support sheet and diagonally on the connection portion, extending to the side edge support sheet, and a plurality of cutting lines that are located at the boundaries of the cross frame portion and that separate the cross frame portion from the opening support sheet, the bottom support sheet, and the center support sheet.

In some embodiments, the filter bag is a nonwoven or woven sheet of material produced by a meltblown process.

In some embodiments, the ear loops are made of a plastic sheet, rolled film, woven sheet, or nonwoven sheet, the material being produced by a foam molding process.

In some embodiments, the ear loops are foam plastic sheets, rolled films, woven or nonwoven sheets with shape memory or elastic recovery.

In some embodiments, the filter bag and ear hooks are joined by an ultrasonic welding or hot welding process.

One embodiment of the present invention is a filter bag made of a filter sheet, the filter bag having an opening located at the top of the filter bag, a plurality of bag walls located on the sides of the filter bag, a bag-shaped bottom located below the filter bag, a storage chamber defined jointly by the bag walls and the bag-shaped bottom after the filter bag is unfolded and communicating with the opening, and a plurality of filter holes located in each of the bag walls and the bag-shaped bottom, and an ear hook portion, the ear hook portion being joined to each of the bag walls of the filter bag, and having an opening support sheet, a bottom support sheet, a center support sheet, and two side support sheets. The central support sheet and the side edge support sheet include a support portion that connects the opening support sheet and the bottom support sheet, and two cross frame portions located on both the left and right sides of the ear hook portion, each having a connection portion and a protrusion, connected to each of the side edge support sheets via the connection portion, and forming a protrusion toward the bottom support sheet on the side closer to the central support sheet, each of the cross frame portions being open on both the left and right sides and arranged to be separated from the bag wall of the filter bag, and the filter bag and the ear hook portions are made of the same material including polyethylene or polypropylene. The connection process for each member is ultrasonic and hot pressure welding.

In some embodiments, each of the bag walls is rectangular, forming a square bag bottom.

In some embodiments, each of the bag walls is pentagonal, forming a tapered bag bottom, forming a funnel shape.

In some embodiments, after the ear loops are folded to expand the filter bag chamber, the opening support sheet maintains the shape of the opening along the opening, and the bottom support sheet maintains the shape of the bag-shaped bottom along the bag-shaped bottom.

In some embodiments, the filter bag is a filter sheet folded in half.

For a clear understanding of the invention, the following embodiments should be read in conjunction with the drawings.
1 is a plan view of a coffee extraction bag structure according to an embodiment of the present invention before opening; FIG. FIG. 2 is a perspective view of a coffee brewing bag structure according to an embodiment of the present invention after being unfolded. FIG. 2 is an explanatory diagram of the use of the coffee brewing bag structure in one embodiment of the present invention. FIG. 2 is an explanatory diagram of the use of the coffee brewing bag structure in one embodiment of the present invention. FIG. 2 is an explanatory diagram of the use of the coffee brewing bag structure in one embodiment of the present invention. FIG. 2 is a plan view of a sheet for manufacturing a coffee extraction bag structure in one embodiment of the present invention. 1 is an explanatory diagram of a method for manufacturing a coffee extraction bag structure according to an embodiment of the present invention. FIG. 2 is a plan view of a coffee brewing bag structure according to another embodiment of the present invention before opening. FIG. 2 is an explanatory diagram of the use of a coffee brewing bag structure in another embodiment of the present invention. FIG. 2 is a plan view of a sheet for manufacturing a coffee brewing bag structure in a further embodiment of the present invention. FIG. 13 is an illustration of the use of a coffee brewing bag structure in a further embodiment of the present invention. FIG. 2 is a plan view of a coffee brewing bag structure before opening in a further embodiment of the present invention; FIG. 13 is an illustration of the use of a coffee brewing bag structure in a further embodiment of the present invention.

Below, we will explain the coffee extraction bag structure in several embodiments of the present invention, and the same parts will be described with the same reference numerals.

The terms "upper," "lower," "left side," "right side," and "side" used to describe the names of elements in this specification are intended to describe the relative positions of each component and are not intended to limit the scope of the present invention.

Figure 1 is a plan view of a coffee extraction bag structure 100 in one embodiment of the present invention before opening. As shown in Figure 1, the coffee extraction bag structure 100 includes a filter bag 200 and an ear hook 300. The filter bag 200 is made of a filter sheet 202 and has a plurality of filter holes 250. The filter sheet 202 can be a nonwoven fabric manufactured from plastic base particles through a melt blowing process. In this embodiment, the material of the plastic base particles can be polyethylene, polypropylene, polyester, polyamide, polyurethane, methyl methacrylate, or a copolymer or polymer blend consisting of any two selected from them.

The ear hook portion 300 is formed from a plastic sheet through a pressing process. This plastic sheet is a plastic sheet manufactured by subjecting plastic base particles to a foaming molding process. In this embodiment, the material of the plastic base particles is polyethylene, polypropylene, polyester, polyamide, polyurethane, methyl methacrylate, or a copolymer or polymer blend consisting of any two selected from them. The ear hook portion 300 may be a rolled film, a woven sheet, or a nonwoven sheet. The ear hook portion 300 is a plastic sheet, a rolled film, a woven sheet, or a nonwoven sheet, and since the support strength is not affected even when exposed to water, there is no need to apply a wet paper strength enhancer to the surface of the ear hook portion 300.

In this embodiment, the filter bag 200 and the ear hooks 300 are made of the same material. That is, if the filter bag 200 is made of a nonwoven fabric using polyethylene, the ear hooks 300 are made of a polyethylene plastic sheet, rolled film, woven fabric sheet, or nonwoven fabric sheet. Because the filter bag 200 and the ear hooks 300 are made of the same material, they can be easily collected when disposing of the used coffee extraction bag.

As shown in FIG. 1, one ear hook portion 300 located on one side of the filter bag 200 includes a support portion 310, two cross frame portions 320, a number of pressing fold lines 330-1, 330-2, 330-3, and a number of cutting lines 340.

The support section 310 has an opening support sheet 312, a bottom support sheet 314, a center support sheet 316, and side support sheets 318 located on both the left and right sides. The center support sheet 316 and the side support sheets 318 on both sides connect the opening support sheet 312 and the bottom support sheet 314. Since the filter bag 200 and the ear hook section 300 are made of the same material, there is no need to use adhesive when joining the filter bag 200 and the ear hook section 300, and the support section 310 and the filter bag 200 can be joined by ultrasonic welding or a hot pressure welding process.

The two cross frame portions 320 are located on the left and right sides of the ear hook portion 300. Each of the cross frame portions 320 has a connection portion 322 and a protrusion portion 324. Each of the cross frame portions 320 is connected to the side edge support sheet 318 on one side via the connection portion 322. Each of the cross frame portions 320 forms a protrusion portion 324 toward the bottom support sheet 314 on the side closer to the central support sheet 316.

A vertical pressure fold line 330-1 is provided in the center of the opening support sheet 312. Vertical pressure fold lines 330-2 that are shorter than pressure fold line 330-1 are provided on both the left and right sides of the opening support sheet 312. Pressure fold lines 330-3 are provided in the diagonal direction at each of the connection parts 322, extending to the side edge support sheet 318. Pressure fold lines 330-1, 330-2, and 330-3 are used to guide the opening support sheet 312 and the connection parts 322 so that they are folded into the desired shape.

A cutting line 340 is provided immediately at the boundary between the opening support sheet 312, the bottom support sheet 314, and the center support sheet 316 of the cross frame portion 320. The cutting line 340 is provided so as to separate the cross frame portion 320 from the opening support sheet 312, the bottom support sheet 314, and the center support sheet 316. When ultrasonic welding is performed, the support portion 310 and the filter bag 200 are only joined together, so the cross frame portion 320 may also be separated from the filter bag 200.

A tear line 260 is provided on the side of the filter bag 200 close to the opening support sheet 312. The tear line 260 is normally closed to prevent the coffee grounds from spilling, and can be easily torn when in use.

2 is a perspective view of the coffee brewing bag structure 100 in one embodiment of the present invention after unfolding. As shown in FIG. 2, the filter bag 200 after unfolding has an opening 210, a bag wall 220, a bag-shaped bottom 230, a storage chamber 240, and a number of filtering holes 250. The opening 210 is located at the top of the filter bag 200. The storage chamber 240 is jointly defined by the bag wall 220 and the bag-shaped bottom 230, and the opening 210 communicates with the storage chamber 240. In this embodiment, the bag wall 220 is rectangular, forming a square bag-shaped bottom 230.

The support part 310 is joined to the bag wall 220 and is used to support and maintain the shape of the filter bag 200. Since the ear hook part 300 is made of a plastic sheet having shape memory properties, after the filter bag 200 is unfolded, the opening support sheet 312 provided along the opening 210 can maintain the unfolded state of the opening 210, while the bottom support sheet 314 provided along the bag-shaped bottom 230 can maintain the unfolded state of the bag-shaped bottom 230. The center support sheet 316 and the side support sheet 318 are used to support and connect the opening support sheet 312 and the bottom support sheet 314.

The cross frame portion 320 is located on both the left and right sides of the ear hook portion 300. Taking the left cross frame portion 320 as an example, the cross frame portion 320 is connected to the left side edge support sheet 318 via the connection portion 322. After folding the left cross frame portion 320 along the pressing fold line 330-3 of the left connection portion 322, the left cross frame portion 320 can unfold to the left and separate from the bag wall 220. The right cross frame portion 320 can unfold to the right and separate from the bag wall 220.

In this embodiment, the plastic sheet for making the ear hook portion 300 may have shape memory properties. In this way, the opening support sheet 312 can be folded along the pressing fold lines 330-1, 330-2, and 330-3 to expand the opening 210 of the filter bag 200, and the connecting portion 322 can be folded to expand the cross frame portion 320. In addition, the portions folded along these pressing fold lines 330-1, 330-2, and 330-3 can maintain their folded shapes.

3 to 5 are explanatory diagrams of the use of the coffee extraction bag structure 100 in one embodiment of the present invention. When using the coffee extraction bag structure 100, first tear the opening line 260, and as shown in FIG. 3, pinch the side edge support sheets 318 on both sides with your fingers and press both sides toward the center of the filter bag 200 as appropriate. The filter bag 200 should be unfolded by the guide of the pressing fold lines 330-1 and 330-2, and the cross frame portion 320 should be unfolded by the guide of the pressing fold line 330-3. As shown in FIG. 4, the degree of unfolding of the cross frame portion 320 should be adjusted according to the size of the cup mouth, and the coffee extraction bag structure 100 is then hung on the edge portion 400 of the cup as shown in FIG. 5. Next, water is added into the filter bag 200 from the opening 210 to fill the brewing material, such as coffee, filled in the storage chamber 240.

As shown in FIG. 5, the side of the convex portion 324 of the cross frame portion 320 away from the central support sheet 316 is used to hang on the outside of the rim 400 of the cup, so that the coffee extraction bag structure 100 can be spanned across the rim 400 of the cup. In this way, even if a lot of water is poured and the liquid level is brought closer to the rim 400 of the cup, the bag-shaped bottom 230 is higher than the rim 400 of the cup, so the bag-shaped bottom 230 will not hit the liquid level.

Figure 6 is a plan view of a manufacturing sheet for a coffee extraction bag structure 100 in one embodiment of the present invention. Figure 7 is an explanatory diagram of a manufacturing method for a coffee extraction bag structure 100 in one embodiment of the present invention.

As shown in FIG. 6, the coffee extraction bag structure 100 mainly includes a filter bag 202 and an ear hook portion 300. First, the ear hook portions 300 are arranged facing each other with a gap on the bottom support sheet 314 side, and a pair of ear hook portions 300 with opposing bottoms are arranged with a gap on the long filter sheet 202. The filter sheet 202 and the support portion 310 of the ear hook portion 300 are joined by ultrasonic welding.

Furthermore, as shown in FIG. 7, the long sides of the filter sheet 202 are overlapped and folded in half. A tearing line 260 is provided on the side of the filter sheet 202 closest to the opening support sheet 312. By repeatedly welding and cutting in the short direction of the filter sheet 202 at intervals of the width d of the filter bag 200 and filling the gaps with one bag's worth of extraction material such as coffee powder, the coffee extraction bag structure 100 according to one embodiment of the present invention can be obtained.

As described above, the filter bag 200 of the coffee extraction bag structure 100 in one embodiment of the present invention is formed by folding the filter sheet 202 in half, and the filter bag 200 has no other folding structure. Therefore, by making the ear hook portion 300 using a foamed plastic sheet with shape memory properties, the shape of the opening 210 and the storage chamber 240 after the filter bag 200 is deployed can be effectively maintained.

Figure 8 is a plan view of a coffee brewing bag structure 100B in another embodiment of the present invention before opening. As shown in Figure 8, the bag wall 220B of the coffee brewing bag structure 100B is pentagonal and forms a tapered bag-shaped bottom 230B. In this embodiment, the pressing fold lines 330B-1, 330B-2, and 330B-3 are vertical, and the pressing fold line 330B-4 is diagonal.

Figure 9 is a schematic diagram of a coffee extraction bag structure 100B in another embodiment of the present invention. As shown in Figure 9, after the coffee extraction bag structure 100B is hung over the edge 400 of the cup via the cross frame part 320B, the pentagonal bag wall 220B allows the coffee to filter out from the tip where the two sides of the tapered bag-shaped bottom 230B intersect. Since the bottom area of the bag-shaped bottom 230B is smaller than the top, the coffee liquid falls quickly into the cup when poured, shortening the time that the hot water contacts the ground coffee powder, achieving the purpose of quickly extracting coffee in a short time, and the texture of the coffee is more refreshing.

Figure 10 is a plan view of a manufacturing sheet for a coffee extraction bag structure 100C in one embodiment of the present invention. As shown in Figure 10, a plurality of rib-shaped bottom support sheets 314C-1 and a plurality of cavities 314C-2 are formed in the center of the support portion 310C of the ear hook portion 300C on the filter sheet 202C, i.e., between a pair of cross frame portions 320C and another pair of cross frame portions 320C. When the plastic sheet from which the ear hook portion 300C is made is subjected to a pressing process, the plastic sheet of the cavities 314C-2 is removed, and the cavities 314C-2 are formed. Furthermore, the support portion 310C and the filter sheet 202C are joined by ultrasonic welding.

Figure 11 is an explanatory diagram of the use of the coffee extraction bag structure 100C in one embodiment of the present invention. As shown in Figure 11, after the coffee extraction bag structure 100C is hung over the edge 400 of the cup via the cross frame part 320C, coffee can be filtered out through the cavity 314C-2 of the ribbed bottom support sheet 314C-1 on the bag-shaped bottom 230C. Since the coffee powder in the corners of the square bag-shaped bottom 230C is often not fully submerged in water, the water flow can be evenly guided over the entire bag-shaped bottom 230C through the cavity 314C-2 formed by the ribbed bottom support sheet 314C-1, so that the coffee powder in the corners can be fully submerged. In addition, the ribbed bottom support sheet 314C-1 can provide support to the bag-shaped bottom 230C and maintain the expanded shape of the bag-shaped bottom 230C.

Figure 12 is a plan view of a coffee extraction bag structure 100D in a further embodiment of the present invention before opening. As shown in Figure 12, the cross frame portion 320D-1 is located on both the left and right sides of the ear hook portion 300D. The support portion 310D is provided with pressing fold lines 330D-1, 330D-2, and 330D-3. Taking the left cross frame portion 320D-1 as an example, the cross frame portion 320D-1 is connected to the central support sheet 316D via the connection portion 322D. After folding the left cross frame portion 320D-1 along the pressing line 330D-3 of the left connection portion 322D, the left cross frame portion 320D-1 can be deployed to the right and separated from the bag wall 220D. That is, the cross frame portions 320D-1 on both the left and right sides can be deployed toward the central support sheet 316D.

As shown in FIG. 12, a cavity 320D-2 may be formed in the cross frame portion 320D as needed. When the plastic sheet from which the ear hook portion 300D is made is subjected to a pressing process, the plastic sheet of the cavity 320D-2 is removed, forming the cavity 320D-2. Furthermore, the support portion 310D and the filter bag 200 are joined by ultrasonic welding. The cavity 320D-2 in the cross frame portion 320D can reduce the weight of the processed coffee extraction bag structure 100D.

Figure 13 is an explanatory diagram of the use of the coffee brewing bag structure 100D in a further embodiment of the present invention. As shown in Figure 13, the coffee brewing bag structure 100D can be stretched over the rim 400 of the cup via the cross frame portion 320D-1, and then the coffee can be filtered out through the bag-shaped bottom portion 230D. In this embodiment, the cross frame portions 320D-1 on both the left and right sides are deployed toward the center support sheet 316D, and the wide center support sheet 316D blocks the water filtered out from the center of the bag wall 220D, so that the water flow is guided to flow out to both sides, and the coffee grounds on both sides can be fully submerged. The center support sheet 316D can also provide vertical support to the bag wall 220D.

As described above, in the coffee extraction bag structure provided by some embodiments of the present invention, the filter bag and the ear hooks are made of the same material, so that the filter bag and the ear hooks can be joined by ultrasonic welding or hot pressure welding process, and the filter bag and the ear hooks can be joined without using adhesive materials such as spray glue or applying adhesive materials by lamination. In addition, the ear hooks are made of a plastic sheet, and there is no need to apply a wet paper strength enhancer to the surface. In the coffee extraction bag structure in some embodiments of the present invention, adhesive and wet paper strength enhancer are not released into the coffee during use, and they are easy to collect after use. In addition, the ear hooks of the coffee extraction bag structure provided by some embodiments of the present invention are hung over the edge of the cup, so that the bag-shaped bottom is not lower than the edge of the cup and does not contact the liquid surface during use.

100, 100B, 100C, 100D Coffee extraction bag structure 200 Filter bag 202, 202C Filter sheet 210 Opening 220, 220B, 220D Bag wall 230, 230B, 230D Bag-shaped bottom 240 Storage chamber 250 Filter hole 260 Opening line 300, 300C, 300D Ear hook 310, 310C Support 312 Opening support sheet 314 Bottom support sheet 314C-1 Ribbed bottom support sheet 314C-2 Hollow 316, 316D Center support sheet 318 Side support sheet 320, 320B, 320C, 320D-1 Cross frame 320D-2 Hollow 322, 322D Connection 324 Convex portion 330-1, 330-2, 330-3, 330B-1, 330B-2, 330B-3, 330B-4, 330D-1, 330D-2, 330D-3 Presser fold line 340 Cutting seal 400 Edge of cup d Width

Claims (10)

A filter bag made of a filter sheet and having a plurality of filter holes;
A plurality of ear hooks;
Including,
Each of the ear hooks is
a support section that is joined to the filter bag and has an opening support sheet, a bottom support sheet, a central support sheet, and two side support sheets, the central support sheet and the multiple side support sheets connecting the opening support sheet and the bottom support sheet; two cross frame sections that are located on both the left and right sides of the ear hook section, each having a connection section and a protrusion, and are connected to each of the side support sheets via the connection sections , forming the protrusion toward the bottom support sheet on the side closer to the central support sheet , and having a cavity in the center ; a plurality of pressing fold lines that are provided vertically on the opening support sheet and extend obliquely to the multiple connection sections to the multiple side support sheets; and a plurality of cutting lines that are located at the boundaries of the multiple cross frame sections and are provided to separate the multiple cross frame sections from the opening support sheet, the bottom support sheet, and the multiple central support sheets.
A coffee extraction bag structure in which the filter bag and the plurality of ear loops are made of the same material including polyethylene, polypropylene, polyester, polyamide, polyurethane, methyl methacrylate, or a copolymer or polymer blend consisting of any two selected therefrom. The coffee extraction bag structure according to claim 1, wherein the filter bag is made of a nonwoven or woven fabric sheet produced by a meltblown process. The coffee extraction bag structure according to claim 1, wherein the material of the plurality of ear loops is a plastic sheet, a rolled film, a woven fabric sheet, or a nonwoven fabric sheet manufactured by a foam molding process. The coffee extraction bag structure according to claim 1, wherein the ear loops are a foamed plastic sheet, rolled film, woven fabric sheet, or nonwoven fabric sheet having a shape memory function or elastic recovery. The coffee extraction bag structure according to claim 1, wherein the filter bag and the ear portions are joined by an ultrasonic welding or hot pressure welding process. A filter bag made of a filter sheet, the filter bag having an opening located at an upper portion of the filter bag, a plurality of bag walls located at a side surface of the filter bag, a bag-shaped bottom located at a lower portion of the filter bag, a storage chamber defined by the plurality of bag walls and the bag-shaped bottom after the filter bag is expanded and communicating with the opening, and a plurality of filter holes located in each of the bag walls and the bag-shaped bottom;
A plurality of ear hooks;
Including,
Each of the ear hooks is joined to each of the bag walls of the filter bag, and has an opening support sheet, a bottom support sheet, a central support sheet, and two side support sheets, and includes a support portion where the central support sheet and the multiple side support sheets connect the opening support sheet and the bottom support sheet, and two cross frame portions located on both the left and right sides of the ear hooks, each having a connection portion and a protrusion portion, connected to each of the side support sheets via the connection portions , forming the protrusion toward the bottom support sheet on the side closer to the central support sheet , and having a cavity in the center ,
The cross frame portions are each open to both the left and right sides and are provided so as to be separated from the bag wall of the filter bag,
A coffee extraction bag structure in which the filter bag and the plurality of ear loops are made of the same material including polyethylene, polypropylene, polyester, polyamide, polyurethane, methyl methacrylate, or a copolymer or polymer blend consisting of any two selected therefrom. The coffee brewing bag structure according to claim 6, wherein each of the bag walls is rectangular and forms a square bag-shaped bottom. The coffee brewing bag structure according to claim 6, wherein each of the bag walls is pentagonal, forming a tapered bag bottom and a funnel shape. The coffee extraction bag structure according to claim 6, wherein after the ear hooks are folded to expand the storage chamber of the filter bag, the opening support sheet maintains the shape of the opening along the opening, and the bottom support sheet maintains the shape of the bag-shaped bottom along the bag-shaped bottom. The coffee extraction bag structure according to claim 6, wherein the filter bag is the filter sheet folded in half.

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