JP3962861B2 - Drip cartridge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drip cartridge that can be suitably used as a disposable simple coffee drip and a method for producing the same.
[0002]
[Prior art]
As a drip filter for roasted coffee, a non-woven bag or paper filter set in a funnel-shaped special device is widely used. In addition, products that use a cartridge made by sealing roasted coffee powder in a non-woven container attached to the bottom of a dedicated instrument, or disposable integrated cartridges that combine a water-resistant paper body and a filter, are on the market. ing. Of these, filters and cartridges that use special equipment are disposable, but the special equipment must be washed each time it is used, and the special equipment can be bulky, especially for outdoor use. There was a lacking point. In addition, the water-resistant paper cartridge has a complicated structure and a large number of processing steps.
[0003]
[Problems to be solved by the invention]
In general, when making an integrated drip filter by integrating the main body and the filter, a cup-shaped main body with an extraction port formed on the bottom is manufactured and extracted on the bottom of the main body. A method of adhering a nonwoven fabric or filter paper that acts as a filter so as to close the mouth is employed. In addition, even in a cartridge filled with roasted coffee, the non-woven container that functions as a filter, containing roasted coffee powder, and the main body that stores hot water and flows to the filter are separate removable members as described above. In many cases, the two are bonded together by post-processing.
[0004]
The present applicant considers that this is one of the factors hindering cost reduction and convenience improvement of drip cartridges and filters, and by integrally forming the main body part for storing hot water and the filter part for extraction. It was considered that a cartridge with a drip filter for disposable roasted coffee that is highly convenient and productive and can be manufactured at low cost.
[0005]
Also, in the conventional drip cartridge, if it is made into individual packaging such as pillow wrapping for each batch for the sake of convenience, the volume occupied by the main body storing hot water for one extraction volume is large and bulky. There was a problem that the efficiency was remarkably deteriorated.
[0006]
An object of the present invention is to provide a drip cartridge that can be manufactured at low cost, can be disposable, realizes volume reduction in packaging, and can reduce distribution costs and improve convenience during carrying. is there.
[0007]
[Means for Solving the Problem and Action]
The drip cartridge according to the present invention is a drip cartridge having a cup-shaped main body portion in which an extraction port is formed on a bottom surface and a filter is stretched so as to close the extraction port, and corresponds to the extraction port. a substrate layer ing a thermoplastic synthetic resin material forming the punching in the position, is laminated over one entire surface of the base layer so as to close the spout, the thermoplastic synthetic resin material constituting the filter in the extraction mouth The main body portion is integrally formed by sheet molding into a cup shape so that the nonwoven fabric layer is disposed on the outer surface or the inner surface and the punched hole becomes an extraction port. Is.
Drip cartridge.
[0008]
The main body of the cartridge can be manufactured by a manufacturing method as set forth in claim 7 . That is, a nonwoven fabric sheet having a filter function made of a thermoplastic synthetic resin material is laminated on the entire surface on at least one surface of a thermoplastic synthetic resin sheet previously punched. Can be manufactured by forming a sheet into a cartridge shape so that becomes an extraction port.
[0009]
More specifically, the main body of the cartridge can be manufactured by hot press molding using a match mold, and is made on a thermoplastic synthetic resin sheet such as polypropylene or polyester in accordance with the mold arrangement of the molding apparatus. , One or more punched holes that function as extraction ports when molded into a drip cartridge, and a non-woven sheet with a filter function made of a thermoplastic synthetic resin material is laminated so as to cover the punched holes As the material sheet is molded , the filter part is simultaneously formed integrally with the main body part while detecting the position of the hole so that the hole becomes an extraction port formed on the bottom surface of the drip cartridge. Can be manufactured by processing. Therefore, in the main body of the cartridge, at the stage of fabricating a sheet of material, the piercing thermoplastic synthetic resin sheet provided by the seat formed integrally in advance by laminating a nonwoven fabric sheet acts as a filter In addition, it is not necessary to perform extraction port extraction processing or filter adhesion in a separate process, and it is possible to manufacture a drip cartridge container efficiently at low cost.
[0010]
Here, by the sheet molding , a housing portion is recessed in the center of the bottom surface of the main body portion so that the extraction port is disposed on the bottom surface of the housing portion, and the housing portion is filled with roasted coffee powder. Then, you may stick the sealing sheet which consists of a nonwoven fabric with water permeability which seals the roasted coffee powder in a storage part to the bottom face of the said main-body part . By comprising in this way, the drip cartridge containing roasted coffee can be manufactured easily and inexpensively. In addition, the main body of this cartridge does not require post-processing such as extracting the hole in the extraction port or adhering the lower filter. Processing becomes possible.
[0011]
The main body part is made of a flexible and bendable thermoplastic synthetic resin sheet, and the upper side wall part or the lower side wall part of the side wall part is folded and inverted at the middle part in the height direction, inside the upper side wall part. You may arrange | position a lower side wall part and may set a total height low. In this case, the main body of the cartridge can be folded during storage to reduce the height of the side wall by about half to reduce the volume during handling. The side wall can be easily used by extending it to its original shape. Moreover, even if individual packaging such as pillow packaging is performed for each time, the volume can be reduced, so that the transportation cost can be reduced.
[0012]
An annular step portion is formed in the middle of the side wall portion of the main body portion in the height direction, and the annular step portion and the wall portion to be reversed are smoothly connected in an arc surface, and the upper wall portion or the center of the annular step portion or The lower wall portion may be folded and inverted, and the lower wall portion may be disposed inside the upper wall portion to set the overall height low. When such an annular step portion is formed, the side wall surface can be folded relatively easily around the annular step portion, and the distortion of the outer periphery when folded is reduced. Further, the position of the folded portion is stabilized, and the folded portion can be folded at the same height.
[0013]
Vertical ribs extending in the expansion / contraction direction may be formed in the circumferential direction in the upper side wall portion to be reversed, and the vertical ribs may not be formed in the lower side wall portion that is not reversed . That is, in the wall portion to be reversed, the inner diameter side having a short circumference is arranged on the outer diameter side having a larger circumference due to the reversal at the time of molding. By providing vertical ribs extending in the expansion / contraction direction on the wall portion to be inverted, the wall portion to be inverted is given some elasticity in the circumferential direction to absorb wrinkles generated during inversion, and the wall It is possible to improve the appearance of the cartridge in a state where the part is reversed. In addition, the inverted wall surface can be returned to its original state more easily during use. Note that the same effect can be obtained even if the wall portion to be inverted is formed in a wave shape having an amplitude in the radial direction along the circumferential direction. Moreover, although the said nonwoven fabric layer can be formed in the outer surface side or inner surface side of a main-body part, it is preferable to form in the outer surface side.
[0014]
A method for producing a drip cartridge according to the present invention is a method for producing a drip cartridge comprising a cup-shaped main body in which an extraction port is formed on a bottom surface and a filter is stretched so as to close the extraction port, A thermoplastic synthetic resin sheet having a punched hole at a position corresponding to the extraction port is manufactured, and a nonwoven fabric sheet having a filter function made of a thermoplastic synthetic resin material is entirely formed on at least one surface of the thermoplastic synthetic resin sheet. laminated over, is to integrally molded by a sheet molding the main body portion into a cup shape so that material sheet formed by laminating the nonwoven fabric sheet on the thermoplastic synthetic resin sheet is a cut hole becomes spout.
[0015]
In this manufacturing method, since the filter can be formed integrally, it is not necessary to perform the punching process of the extraction port or the bonding process of the filter to the bottom surface in a separate process, and the manufacturing cost of the cartridge can be reduced. In particular, in a cartridge for filling roasted coffee, it is possible to process the final product consistently by using an automatic filling machine with a general molding device.
Here, in the method for manufacturing the drip cartridge , a plurality of punch holes are formed in a matrix in the thermoplastic synthetic resin sheet, and the material sheet is aligned with the mold for sheet molding, and the plurality of main body portions are simultaneously aligned. By forming the sheet, the container is recessed at the center of the bottom surface of the main body so that the extraction port is arranged on the bottom of the container, and the container is filled with roasted coffee powder. After that, a sealing sheet made of a non-woven fabric with water permeability that seals the roasted coffee powder in the container is attached to the bottom surface of the cartridge so that the non-woven fabric layer is disposed on the outer surface side of the main body. It is a preferred embodiment that the main body is integrally formed into a cup shape by sheet molding.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 3, the drip cartridge 1 includes a cup-shaped main body portion 2, roasted coffee powder 4 filled in a storage portion 3 formed at the bottom of the main body portion 2, and the bottom surface of the main body portion 2. And a sealing sheet 5 for sealing the roasted coffee powder 4 in the accommodating portion 3.
[0017]
The main body part 2 will be described. The main body part 2 has a side wall part 6 and a bottom wall part 7 that become larger in diameter toward the upper side, and a reinforcing flange part 9 is folded at the upper end part of the side wall part 6. A substantially flat annular mounting portion 10 for setting the cartridge 1 on the upper side of a coffee cup or the like is formed on the outer peripheral portion of the bottom wall portion 7. The accommodating part 3 is recessed in the substantially central part of the bottom wall part 7, the extraction port 11 is formed in the bottom face of the accommodating part 3, and the filter 12 which consists of a nonwoven fabric sheet so that the opening may be block | closed in the extraction port 11 It is stretched. Then, a required amount of roasted coffee powder 4 is filled in the housing portion 3 of the main body 2, and the sealing sheet 5 made of nonwoven fabric is heated on the upper surface of the mounting portion 10 so as to close the upper surface opening of the housing portion 3. The cartridge 1 is manufactured by bonding with a seal or the like. The extraction port 11 may be circular or polygonal. Moreover, you may comprise by several holes, such as slit shape, fan shape, and a small hole.
[0018]
The main body 2 is laminated over the entire outer surface of the base material layer 13 so as to close the extraction port 11 and a cartridge-shaped base material layer 13 such as a cup shape made of a thermoplastic synthetic resin material. A two-layer structure is formed with a nonwoven fabric layer 14 made of a thermoplastic synthetic resin material constituting the filter 12 and, as will be described later, a synthetic resin sheet 50 constituting the base material layer 13 is punched in correspondence with the extraction port 11. 51, a nonwoven fabric sheet 52 constituting the nonwoven fabric layer 14 is laminated thereon, and a material sheet 54 obtained by laminating is laminated into a cartridge shape by hot press molding. However, the nonwoven fabric layer 14 may be laminated over the entire inner surface of the base material layer 13. Further, a decorative hole or the like may be formed in the nonwoven fabric layer 14 at a position corresponding to the base material layer 13.
[0019]
As the thermoplastic synthetic resin constituting the base material layer 13, polyolefin synthetic resin materials such as polypropylene and polyethylene, those obtained by blending these synthetic resin materials with inorganic fillers, polyester, polycarbonate, and the like can be suitably used. .
[0020]
As the non-woven fabric constituting the non-woven fabric layer 14, a non-woven fabric made of a material having moldability such as a long fiber spunbonded non-woven fabric and excellent in heat fusion with the base material layer 13 can be suitably used. Specifically, a long fiber spunbond nonwoven fabric made of a thermoplastic synthetic resin material such as polyamide, polyacrylonitrile, polyester, polyvinyl alcohol, polypropylene, polyvinyl chloride, or polyvinylidene chloride can be employed. In addition, the basis weight of the nonwoven fabric (nonwoven fabric sheet 52) constituting the nonwoven fabric layer 14 is set such that hot water poured into the main body 2 is supplied into the coffee cup through the roasted coffee powder 4 at an appropriate rate. Will do. The sealing sheet 5 is also composed of the same material as the nonwoven fabric layer 14.
[0021]
The main body 2 can be formed in any shape other than the cup shape. Moreover, the capacity | capacitance of the main-body part 2 is set a little larger than the capacity | capacitance of a standard coffee cup, and it may be made to be able to put in one cup of coffee by pouring hot water to the setting position of the main-body part 2. However, in order to set the height of the main body 2 as low as possible, the volume may be set smaller than the capacity of a standard coffee cup, and hot water may be poured in a plurality of times.
[0022]
This cartridge 1 is basically a simple cartridge that can be disposable, and the container 3 is filled with roasted coffee powder 4 in an amount sufficient to hold a cup of coffee. However, it is also possible to fill the amount of roasted coffee powder 4 that can contain a plurality of cups of coffee.
[0023]
When the cartridge 1 is used, the cartridge 1 is set on a container such as a coffee cup, and the poured hot water is supplied to the roasted coffee powder 4 through the sealing sheet 5 simply by pouring hot water into the main body 2. Then, the extracted coffee is supplied into the container through the filter 12.
[0024]
In the present embodiment, the roasted coffee powder 4 is filled in the container 3, but it is also possible to fill the tea leaves such as green tea, oolong tea and black tea so as to provide green tea, oolong tea and black tea. Is possible.
[0025]
In the present embodiment, the roasted coffee powder 4 is provided in the cartridge 1, but the roasted coffee powder 4 and the sealing sheet 5 are omitted, and the separately prepared roasted coffee powder 4 is contained in the main body 2. It is also possible to extract coffee in Further, in this case, as in the cartridge 1A shown in FIGS. 4 and 5, instead of the housing portion 3 of the main body 2 in the embodiment, the depth is deeper than the housing portion 3 for positioning the cartridge 1 with respect to the coffee cup. The position restricting portion 15 having a shallow depth is recessed in the central portion of the bottom wall portion 7, or the accommodating portion 3 is omitted completely, and the extraction port 11 is formed directly in the central portion of the bottom wall portion 7. It will be.
[0026]
The cartridge 1 is provided on the market after being wrapped with a barrier film having gas barrier properties in order to maintain the flavor of coffee. If multiple packages are opened and cannot be used in a short time, the flavor will be lost if left untouched. Consideration such as using cans, glass bottles, or airtight storage bags made of barrier film to store the remaining items. Is required. It is preferable that the packaging form is individually packaged one by one so that it does not require special consideration and can be easily carried and used outdoors. However, if the cartridge 1 is individually packaged one by one with pillow packaging or the like, the main body 2 for storing hot water is bulky, the distribution cost and the sales cost are high, and it is inconvenient to carry and becomes extremely inconvenient. In order to solve the above problem, the applicant of the present invention reduces the packaging form by turning the side wall 6 of the main body 2 in the middle in the height direction and inverting it so that the height of the cartridge 1 is approximately halved. The following method was invented.
[0027]
As the base material layer 13, an inorganic filler is used for polyethylene, polypropylene, and these polyolefin-based synthetic resins so that the upper wall portion or the lower wall portion of the side wall portion 6 of the main body portion 2 can be folded back and turned in the middle in the height direction. A thermoplastic synthetic resin sheet having relatively flexible and bendable characteristics, such as those blended with, was adopted.
[0028]
Then, as shown in FIG. 6A, the cartridge 1 is inverted and mounted on the substantially cylindrical cradle 20, and the ring-shaped folding jig 21 that fits the lower half of the cartridge 1 is inverted. Covering the set cartridge 1 from above, while holding the mounting portion 10 of the cartridge 1 with the folding jig 21, the upper half of the cartridge 1 is turned upside down by pulling up the mouth edge of the cartridge 1 to the outside. 6 (b), the side wall portion 6 is folded back until the side wall portion 6 hits the lower end of the folding jig 21, and the height of the cartridge 1 is configured to be about half that at the time of molding. As a result, the volume can be reduced in the packaged state. When the cartridge 1 is used, the lower surface side of the lip portion of the folded cartridge 1 is held with the fingertips of both hands, and the mounting portion 10 is pushed down from the inside with the thumb, so that the main body portion 2 is in a state at the time of molding. Will be restored. However, it is also possible to mechanically fold the side wall portion 6 and reverse it by the same method as described above.
[0029]
In addition, an annular step 25 is provided in the middle of the side wall 6B of the main body 2B in the height direction so that the side wall 6 is smoothly folded, as in the cartridge 1B shown in FIGS. If the diameter of the upper side wall portion 26 above the annular step portion 25 is made larger than the diameter of the lower side wall portion 27 below the annular step portion 25, the upper wall portion 26 can be easily formed via the annular step portion 25. It can be bent. Further, when the annular step portion 25 and the upper side wall portion 26 on the folded back side are smoothly connected by an arcuate guide surface 28 formed by a curved surface R1 having the same radius as the width of the annular step portion 25, the upper wall portion 26 is more easily folded.
[0030]
Further, on the wall portion on the side to be folded, that is, the upper side wall portion 26 in the cartridge 1B, a longitudinal rib 29 made of a ridge projecting outward in the folded state is provided in the circumferential direction over substantially the entire length in the vertical direction as a stretching direction. The vertical ribs 29 may absorb wrinkles caused by reversing the inner and outer surfaces of the upper side wall portion 26.
[0031]
Further, as in the cartridge 1C shown in FIGS. 10 to 12, an annular step portion 25C is formed in the middle of the side wall portion 6C in the height direction, and the upper side wall is located above the annular wall portion 25C in the side wall portion 6C. Forming a portion 26C, forming a lower side wall portion 27C having a diameter smaller than that of the upper side wall portion 26C on the lower side, folding the lower side wall portion 27C around the annular step portion 25C inside the upper side wall portion 26C, and inverting it; It is also possible to fold the cartridge 1C. In this case, the annular step portion 25C and the lower side wall portion 27C to be reversed are smoothly connected by an arcuate guide surface 28C formed by a curved surface R2 having the same radius as the width of the annular step portion 25C. Then, the lower wall portion 27C can be more easily folded. Further, a protruding wall portion 30 having a low height that protrudes upward from the outer peripheral portion of the mounting portion 10 in a state of being folded between the lower wall portion 27C and the mounting portion 10 is formed, and the protruding wall portion 30 and the mounting portion are formed. The rib portions 31 having a triangular cross section may be formed at regular intervals in the circumferential direction. In this case, when the cartridge 1C is switched to the use state, the space between the adjacent rib portions 31 remains in a substantially right-angle state, and the corner portion 32 is formed on the outer edge portion of the placement portion 10 to place the cartridge 1C. Since the portion 10 becomes flat, the cartridge 1C can be placed on the coffee cup or the like with good stability.
[0032]
Next, a method for manufacturing the drip cartridge 1 will be described.
A drip cartridge 1 shown in FIG. 1 includes a thermoplastic synthetic resin sheet 50 such as polypropylene or polyester in which a punch hole 51 serving as an extraction port 11 is previously provided, and a non-woven sheet 52 having a moldability having a function as a filter. Are produced by sheet-molding the material sheet 54 laminated.
[0033]
First, as shown in FIG. 13, the punched holes 51 serving as the extraction ports 11 of the cartridge 1 are made to correspond to the mold arrangement of the molding die 61 of the molding apparatus 60 shown in FIG. 15 with respect to the belt-like thermoplastic synthetic resin sheet 50. While forming in a matrix, small holes 53 for position detection at the time of molding are formed in the side portion of the thermoplastic synthetic resin sheet 50 at a rate of one place for each shot. However, it is possible to configure one extraction port 11 with a plurality of punched holes 51. Further, the small hole 53 for position detection may be punched integrally with the punch hole 51, or a position detection mark is printed on the resin sheet 50 instead of the small hole 53, and a predetermined position is obtained while aligning with a photoelectric tube or the like. The punched hole 51 may be punched at the position.
[0034]
Next, as shown in FIGS. 13 and 14, the thermoplastic synthetic resin sheet 50 in which the punched holes 51 and the small holes 53 are formed has a moldability such as a long fiber spunbond nonwoven fabric made of a thermoplastic synthetic resin material. The non-woven fabric sheet 52 is heat-laminated so as to cover the punched holes 51, and the material sheet 54 is manufactured.
[0035]
Next, the material sheet 54 is supplied to the molding device 60 so that the nonwoven fabric sheet 52 is positioned on the lower side, and the position detection is performed so that the punch hole 51 is positioned at the substantially center of the bottom surface of the molded cartridge 1. The small holes 53 are detected by a detecting means 62 such as a photoelectric tube, the position of the material sheet 54 is adjusted, the material sheet 54 is heated by the heater 63, and then hot press molding is performed between the upper and lower molding dies 61 made of a match mold. To do.
[0036]
Next, the material sheet 54 subjected to hot press molding is trimmed by a punching means (not shown) to manufacture a single body portion 2.
[0037]
Next, after filling a certain amount of roasted coffee powder 4 into the accommodating portion 3 of the main body 2 by a filling device (not shown), the nonwoven fabric sheet having water permeability so that the opening of the accommodating portion 3 is closed. The resulting sealing sheet 5 is adhered to the upper surface of the mounting portion 10 by heat sealing, ultrasonic sealing, or the like to obtain the cartridge 1.
[0038]
In this manufacturing method, by forming the material sheet 54 prepared in advance, the extraction port 11 is integrally formed with a filter function. There is no need to perform bonding processing, and a filling device for roasted coffee powder 4 is connected to the molding device 60, so that coffee filling processing and bonding processing of the sealing sheet 5 can be performed in-line, greatly improving productivity. It becomes possible.
[0039]
【The invention's effect】
According to the drip cartridge according to the present invention, the main body for storing hot water and the filter member of the extraction port can be integrally formed. Therefore, it is necessary to make a hole for extraction in the bottom surface or attach the filter member in a separate process. Since it can be manufactured at a low cost, it can be provided at a low cost as a disposable specification. Further, since no other equipment such as a separate molded container is required, it can be easily carried outdoors and the convenience is high.
[0040]
When the upper side wall or the lower side wall of the cartridge side wall is folded in the middle in the height direction and turned upside down, the lower side wall is placed inside the upper side wall and the overall height is set low. The volume can be halved, and the cost at the distribution stage can be greatly suppressed. In addition, it is easy to carry around outdoors without being bulky, increasing convenience.
[0041]
If an annular step is formed in the middle of the side wall of the cartridge in the height direction, and the annular step and the upper side wall are smoothly connected with an arcuate surface, a continuous portion of the annular step and the upper side wall Can be easily bent, and the side wall portion can be easily folded back, thereby improving workability.
[0042]
When vertical ribs extending in the expansion / contraction direction are formed at intervals in the circumferential direction on the upper side wall portion or the lower side wall portion to be reversed, a slight elasticity occurs in the circumferential direction, and the inner surface of the side wall portion having a small circumference is It is possible to effectively eliminate wrinkles caused by replacing the outer surface of the large side wall portion. In addition, since the wall portion is flexible, it can be easily operated when the inverted wall surface is returned to use.
[0043]
According to the manufacturing method of the drip cartridge according to the present invention, the main body for storing hot water and the extraction port having the filter function can be integrally formed at the same time. A drip cartridge with a filter can be manufactured at low cost without the need for bonding. In addition, since it can be manufactured consistently from the state of the material sheet to the state of the container with the filter function, using an automatic filling and sealing machine with a general molding device makes it possible to perform in-line processing up to the final product, Productivity can be improved.
[Brief description of the drawings]
1 is a perspective view of a drip cartridge. FIG. 2 is a longitudinal sectional view of the drip cartridge. FIG. 3 is a plan view of a main body of the drip cartridge. FIG. 4 is a perspective view of a drip filter having another configuration. FIG. 5 is a longitudinal sectional view of the drip filter. FIGS. 6A and 6B are explanatory views of a cartridge folding method. FIG. 7 is a perspective view of a drip cartridge having another configuration. FIG. FIG. 9 is a longitudinal sectional view of the drip cartridge in a folded state. FIG. 10 is a roasted coffee powder and a sealing sheet removed from the drip cartridge of another configuration. Fig. 11 is a longitudinal sectional view of the drip cartridge in a folded state with the roasted coffee powder and the sealing sheet removed. Fig. 12 Fig. 13 is a plan view of the cartridge with the roasted coffee powder and the sealing sheet removed. Fig. 13 is an explanatory view of the method for manufacturing the material sheet. Fig. 14 is a longitudinal sectional view of the material sheet. Fig. 15 is a schematic explanatory view of the manufacturing apparatus. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drip cartridge 2 Main body part 3 Storage part 4 Roasted coffee powder 5 Sealing sheet 6 Side wall part 7 Bottom wall part 9 Flange part 10 Mounting part 11 Extraction port 12 Filter 13 Base material layer 14 Non-woven fabric layer 1A Cartridge 15 Position restriction Part 20 Receiving base 21 Folding jig 1B Cartridge 2B Body part 6B Side wall part 25 Annular step part 26 Upper side wall part 27 Lower side wall part 28 Guide surface 29 Vertical rib 1C Cartridge 6C Side wall part 25C Annular step part 26C Upper side wall part 27C Lower side wall Part 28C Guide surface 30 Protruding wall part 31 Rib part 32 Corner part 50 Thermoplastic synthetic resin sheet 51 Punched hole 52 Non-woven sheet 53 Small hole 54 Material sheet 60 Molding device 61 Molding die 62 Detection means 63 Heater

Claims (10)

A drip cartridge comprising a cup-shaped main body with an extraction port formed on the bottom surface and a filter stretched to close the extraction port,
A substrate layer ing a thermoplastic synthetic resin material forming the piercing at a position corresponding to the extraction port,
And the nonwoven fabric layer made of a thermoplastic synthetic resin material constituting the filter in the laminate is, extracted mouth over one entire surface of the base layer so as to close the spout,
A drip cartridge formed by integrally molding the main body portion into a cup shape so that the nonwoven fabric layer is disposed on the outer surface or the inner surface and the punched hole becomes an extraction port . After the sheet forming , the storage portion is recessed in the central portion of the bottom surface of the main body so that the extraction port is disposed on the bottom surface of the storage portion, and after filling the storage portion with roasted coffee powder, The drip cartridge according to claim 1, wherein a sealing sheet made of a non-woven fabric having water permeability that seals roasted coffee powder in the housing is attached to the bottom surface of the main body . The main body part is made of a flexible and bendable thermoplastic synthetic resin sheet, and the upper side wall part or the lower side wall part of the side wall part is folded and inverted at the middle part in the height direction, inside the upper side wall part. The drip cartridge according to claim 1 or 2, wherein the lower wall portion is disposed and the overall height is set low. An annular step portion is formed in the middle of the side wall portion of the main body portion in the height direction, and the annular step portion and the wall portion to be reversed are smoothly connected in an arc surface, and the upper wall portion or the center of the annular step portion or The drip cartridge according to claim 1 or 2, wherein the lower wall portion is folded and inverted, and the lower wall portion is disposed inside the upper wall portion so that the total height is set low. 5. A drip cartridge according to claim 3 or 4, wherein vertical ribs extending in the expansion / contraction direction are formed on the upper side wall portion to be reversed at intervals in the circumferential direction, and no vertical ribs are formed on the lower side wall portion that is not reversed. . The drip cartridge according to any one of claims 1 to 5, wherein the main body is integrally formed by cup molding in a cup shape so that the nonwoven fabric layer is disposed on the outer surface side of the main body. A method for producing a drip cartridge comprising a cup-shaped main body with a filter formed so as to close the extraction port while forming an extraction port on the bottom surface,
Producing a thermoplastic synthetic resin sheet with a hole in the position corresponding to the extraction port ,
On at least one surface of said thermoplastic synthetic resin sheet, a nonwoven sheet having a filter function consisting of a thermoplastic synthetic resin material is laminated over the entire surface,
A material sheet formed by laminating the nonwoven fabric sheet on the thermoplastic synthetic resin sheet is integrally formed by sheet molding in a cup shape so that the punch hole becomes an extraction port ,
A method for producing a drip cartridge. Said thermoplastic synthetic resin sheet into a plurality of vent holes are formed in a matrix, the production of drip cartridge according to claim 7, wherein by aligning the sheet of material into a mold for sheet forming simultaneously forming a plurality of body portions Method. After the sheet molding, the container is recessed in the central portion of the bottom surface of the main body so that the extraction port is disposed on the bottom surface of the container, and the cartridge is filled with roasted coffee powder. The manufacturing method of the cartridge for drip of Claim 7 or 8 which affixed the sealing sheet which consists of a nonwoven fabric with water permeability which seals roasted coffee powder in a storage part in the bottom face of this. The manufacturing method of the cartridge for drip of any one of Claims 7-9 which integrally shape | molds the said main-body part by a sheet | seat molding so that the said nonwoven fabric layer may be arrange | positioned at the outer surface side of a main-body part.

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