CN103946129A - Bag for a beverage preparation - Google Patents

Abstract

In the interior of a disposable closed bag (1) formed of a package material, a beverage preparation of a solid substance is placed, said substance being capable of giving off components of the beverage through the water- permeable packaging material when the bag is infused in water for preparing the beverage. On part of the package material the bag comprises a supporting surface which is formed as a water-impermeable structure (1b) having an upward dimension as a collar of a given height, for preventing water from leaking out from the wetted beverage preparation in the bag.

Description

For the bag of beverage preparation

Technical field

The present invention relates to the bag for beverage preparation as narrated in the preorder of claims.

Background technology

For packing in permeable bag (filter bag) to prevent this material and beverage blends by brewing or extract the beverage preparation that is solid raw material form of the beverage of preparing.Filter bag can pack into then in sealing bag and being formed in the packing of single protective package of filter bag.Such protective package can pack in larger box-like consumer package.This class packaging modal is exemplified as will be by the packaging of the tea beverage that brews or extract to prepare, that is, and and the packaging of tea bag.For example, in US Patent 3,175, a kind of flat rectangular protective package of routine is disclosed in 911, the rope of tea bag is also fastened in this packaging.

When use comprised for the raw MAT'L of beverage and when bag of being made up of suitable filter material, be placed in cup, comprise hot water to falling hot water or cup in cup, afterwards, this bag is dipped into and in water, reaches beverage ingredient and be dissolved in the water in cup to desirable concentration from the raw MAT'L being contained in filter bag.

Because following reality has caused the problem of this class packaging: in the time soaking, the raw MAT'L in filter bag becomes wet and expands.In the time taking out this bag from cup, its can be by the place unrest of making dirty.If want by pushing this bag, remaining liq to be discharged in cup, if do not adopt instrument, be difficult to carry out in the situation that not making hand dirty.Even if make this bag become more dry by extruding, also always some liquid can be stayed in bag, from the bag sound of rain pattering to placing the surface of this bag.

Multiple patent documentation discloses the solution that overcomes these problems.The very common scheme that overcomes this problem is that the packaging that makes in some way this bag " can be opened at bottom place ", in thereby this bag can in the time being carried/carried by rope and in being delegated to cup and be mentioned with rope again and is put back into and packs, wherein this packaging can be used for pushing this bag and people's the finger and for keeping this bag can not made dirty, as disclosed at international publication WO 96/01773 for example.But, be difficult to the bag of expansion/swelling to be pulled in this packaging, if this packaging be dimensioned to closely the size of mating/meeting dry bag.And if packaging is positioned over to the level attitude on desktop after using, liquid still can be through the flows of opening of packaging.

And, known such tea bag below: wherein, guiding suspension strop makes by drawing this rope, bag to be extracted.Special navigation that this need to restrict arranges and to the special attachment of bag so that the ring that acquisition is used for bag to extract, as disclosed at US 2004/071830 for example.

International publication WO 98/04460 discloses a kind of tea bag, can make this tea bag draining by making bag tilt to about miter angle, wherein bag and vertical edge form " tip " of downward orientation, in top, this " tip ", water gathers and forms a kind of bed, and this bed generates the pressure that removes more efficiently water from bag.According to the embodiment shown in Fig. 3 A and Fig. 3 B, make bag to hang and to obtain drainage position with deflected position by the one end of departing from center (centre symmetry line of bag) fastening rope.

And, known such elongate pocket below: it can make in the time stirring water as rabble, and the material being included in bag is dissolved in the water by porosity wall simultaneously.For example, document US 2002/0162461 discloses the micropore that use separates densely in bag material (being less than 0.5 to 0.35mm), reduced thus capillary effect/impact, and water can enter bag and the material that is dissolved in the water can be by diffusion from bag out.Bag can be used for preparing beverage from water-soluble or extractible material.

In the time using micropore, may after using, reduce the leakage of water from bag, but may trigger water from the bag sound of rain pattering out with Surface Contact.When such bag is during for extractible powder drink preparation (such as tealeaves), water can not suitably flow through powder and " flushing " it, this flushing is vital for discharge as well as possible flavouring agent in water.Thereby bag can be used for stirring in initial step, powder be forced to by full densification pack in bag, but in the time that it becomes moistening, powder is by expansion and be unfavorable for material absorbing.

Due to reason mentioned above, particularly powder formulation (will from powder formulation to water in extraction of substance) packs in yarn bag, and yarn bag has larger open list area and thinner can the flow turnover bag and rinse the powder loosely packing into respect to the volume of bag of water that makes.This fills the mode of tealeaves just.If do not wish with finger or speciality tool/utensil, bag to be extracted, the unique alternative rule of doing of extracting is to discharge water, for example deflected position to be proposed in WO 98/04460 from bag.

Can show by experiment to carry out after draining in bag long enough time by the relative open surface that soaked in water of shake (continue 2-3 second), no longer include drop and occur, although bag comprises large water gaging.This is the remainder that keeps water because of the surface tension of the absorptivity for by powder and water.But in the time touching this bag surperficial, more water will be from this touch point out; In other words, broken at contact point place the water surface tension that has binding power (cohesive).When the bag that seems not drip is positioned on solid surface, form with bag in when the contacting of water, there is identical phenomenon.

In a word, therefore the problem relating in institute's marsupial is following reality: in order to ensure using and carry out possible draining by dripping after anhydrous can be from bag out, user the bag having soaked in water must be positioned in special tray or packaging in to avoid the desktop of making dirty.

Summary of the invention

The object of the invention is to get rid of defect mentioned above and propose a kind of disposable bags for beverage preparation, this bag is without pallet or extrusion equipment separately, but it can be placed into like this desktop and maybe will keep clean another location after soaking.In order to achieve this end, be according to the principal character of bag of the present invention the feature proposing in the characteristic of claims 1.

This bag comprises area supported, and this area supported is formed as fluid-tight structure.This area supported abuts against the counter surface that moistening bag is placed in after immersion.Area supported provides supporting-point to bag, this supporting-point support pouch make its by remain on area supported at foot the position against counter surface.The fluid-tight structure of area supported is upwards extended (above supporting-point) as the collar of assigned altitute, in the horizontal direction around whole bag and anti-sealing in the horizontal direction directly from the nadir of moistening beverage preparation from the bag sound of rain pattering out.Fluid-tight structure is the integral part of the packing (sealing the lapping of beverage preparation) of bag, and the packing of bag keep permeable in other parts, have filtration.In a replacement scheme, vertically the base section of bag (, highly be greater than the maximum sized bag of bag in the direction transverse to height) or the base section of polyhedron bag be formed as fluid-tight structure, at fluid-tight superstructure, in short transverse, extend bag sidewall be permeable (thering is filtration) to soak the beverage preparation being included in bag, its component will be dissolved in the water.The impervious zone band of base section extends up to proper height in the side of bag sidewall, forms the collar as described above, and the collar extends to assigned altitute and around the area supported being formed by bottom.This bag can be by folding and sew up the bag that the packing of bag are made, for example, have the general shape of conventional tea bag or tetrahedron or another is polyhedron-shaped.After the bag soaking in water is uprightly positioned on desktop or another counter surface, the water that tends to spill from beverage preparation will remain on the one " groove " of fluid-tight base section inner side.

Fluid-tight base section can for example be arranged on the bottom place of the beverage preparation bag with common tea bag shape, or at the bottom surface place with tetrahedron or other polyhedron-shaped bag, and be set to around bottom.Its therefore cover bag lapping face area smaller portions and can not impair immersion efficiency.Therefore described base section may be the region that is covered with a face in foot against counter surface to be placed of polyhedron bag, with in short transverse, extend to other basifacial region from this face, or be covered with the bag with common upright tea bag shape bottom region and in short transverse, extend to the region of upstanding side subordinate portion from this bottom.Also may described fluid-tight structure in bag for example, compared with extending in big bear surface, in a larger side portion of flat bag.Therefore bag is positioned over level attitude, and wherein area supported is against counter surface.In this replacement scheme, the face area that can be used for immersion is less.

For can control better components dissolved from bag in water and after from bag draining, this bag comprises two hitch poinies, in the time that the barycenter of bag is placed in hitch point below due to gravity, these two hitch poinies determine two different obliquities of bag: setting position, wherein bag with fluid-tight area supported towards lower suspention; And, drainage position, wherein area supported turns to into angled with respect to setting position.For example, in the drainage position of butt-ended bag, the sidewall of the bag above fluid-tight base section is diverted with respect to the horizontal plane to become than in the less angle of setting position, and the lower surface of base section is accordingly to sides tapered, that is, bag is in obliquity.In this drainage position, wherein bag may be tilt or level, or even its upper end is downward, can be after soaking by permeable packing more easily from bag draining.In the time that the internal dimensions of cup or glass allows, this position also can be as soaking position, wherein in the time that solid beverage preparation accumulates on waterproof sidewall, be contained in beverage preparation in bag and contact better with the water in cup or glass, water rinses the beverage preparation that is contained in bag and the component of preparation is dissolved in the water better.In the time that the bag soaking in this position is mentioned from water, it can drain water in same position.Be soaked in bag in water also can mention and forward drainage position to from cup or glass in another location.

Utilize setting position and the drainage position that different hitch poinies obtains can be in all bags, regardless of their general shape.Therefore, at setting position, area supported is positioned at foot towards counter surface, and in drainage position, area supported is turned into another location and the permeable region in packing turns to more towards horizontal surface.

In the time that bag forwards setting position to from drainage position, be contained in beverage preparation wherein and will again fill on watertight base section top and in the time that bag is configured to have fluid-tight area supported against desktop or another counter surface and will can not cause leakage problem.The water that may leak from moistening beverage preparation will be retained in fluid-tight structural top and can not leak into sidepiece, because fluid-tight structure also has the upwards size that is collar form.

The hitch point of setting position is in bag on the sidepiece contrary with area supported, and with respect to point mentioned above, the area supported of the more close bag of the hitch point of drainage position, for example, in the bottom in sidewall or in butt-ended bag.Preferably, supporting-point is positioned in the fluid-tight structure of bag.

In fact, overcome gravity and the hitch point of support pouch can be the fastening point of suspension strop.For example can use a suspension strop, this suspension strop forms ring between fastening point.Also may accurately adjust by simultaneously applying supporting power on two hitch poinies the angle of the drainage position of bag, and bag also can accurately be soaked in desirable position, this desirable position may be different from setting position and drainage position.

Bag is originally as disposable bags, in disposable bags, seal solid beverage preparation and only make by tearing packing or by opening by the seam that the edge seal of packing is formed together by sealing this enclose material, or utilize for good and all sealing and packing material and established dissimilar seam is opened this bag of the knot of rivet, self-adhesive label, bond material or another corresponding enclosed member by opening.Can utilize the blank that comprises permeable region and watertight region to make bag by folding and stitching to form closing structure, the bottom of this closing structure possesses the water-tight structure being made up of the watertight region of blank.Simultaneously bag is formed to have and a kind ofly possesses enough large area supported and make bag will to remain on the structure of setting position.The basal surface that butt-ended bag can be made into bottom is enough supporting bag greatly and in stand up position.

Can by the following method blank be embodied as to the combination in permeable region (thering is the region of filtration) and watertight region: partly cover waterproof material film to the blank being originally made up of the material with filtration completely, wherein permeable region will remain on the outside, region being covered by waterproof material; Or by starting from the blank originally being formed by waterproof material and by revising this material, permeable region being formed in a part for face area for blank, in this outside, permeable region, leave the unmodified region of waterproof material.Can, for example by with given hole density and hole size perforation, revise out permeable region in blank material, the combined effect of hole density and hole size provides enough open list areas.Also may revise the material conventionally with filtration for making desirable part become waterproof, for example, by coating technique, and without the independent impermeable sheet that completes of material membrane is attached on filtration material.

Compact material membrane can be completely or pointwise be fastened on packing.

Blank can be set to blank web one by one, separates the blank to sizing from blank web, folding, is filled with solid beverage preparation in appropriate steps, and final sealing is to form closed bag.

Brief description of the drawings

To the present invention be described in more detail referring to accompanying drawing hereinafter, in the accompanying drawings:

Fig. 1 shows according to bag of the present invention with general view,

Fig. 2 shows the bag in soaking position/drainage position with front elevation,

Fig. 3 shows the bag in setting position with front elevation,

Fig. 4 shows for manufacturing according to the blank web of the bag of Fig. 1 to Fig. 3,

Fig. 5 shows another blank web,

Fig. 6 shows the made bag of blank utilizing from the blank web of Fig. 5; And

Fig. 7 show the present invention can how to be applied to any shape bag mode.

Detailed description of the invention

Filter preparation and pack in filter bag 1, filter bag 1 mainly comprises permeable material.It is solid-state that beverage preparation is, and for example, powder or particle or various vegetables part, can prepare beverage from solid beverage preparation by bag 1 being immersed in to the lasting suitable time in water, and wherein beverage ingredient is dissolved into water from filter bag.This process is usually known as immersion.Tea and various seasoning tea and herbal tea are an example, but the present invention is not limited only to comprise the raw-material packaging for such beverage.

Bag 1 can have the global shape of conventional flat filter bag 1 or polyhedron bag (for example, tetrahedron bag, " pyramid bag "), and it is more common that polyhedron bag becomes recently.It can start from automation equipment manufacture and the filling of bag blank by prior art, bag blank fluid-tight by arranging in its surperficial part in advance (being watertight) region.

Bag 1 is by disposable closed bag folding and that stitching suitable package material (lapping) forms, in formation step, in the time that bag is partly opened, packs beverage preparation in bag inner side.Pack in this way beverage preparation into, that is: its part of the internal volume of filling bag (filling extent only has half or is even less than half, and the volume based on free setting preparation calculates) only.This has improved the dissolving from the component of beverage preparation.The bag of Fig. 1 is for having the butt-ended bag of conventional tea bag shape.The base section 3 of bag is from the bottom of foot to the fluid-tight structure 1b of assigned altitute.Structure 1 has upwards size, and in other words, it has waterproof and extends to the collar of assigned altitute.Fluid-tight structure 1b is waterproof and is arranged in the region in the part of face area of packing, this region is placed with in the bag completing in packing, it also forms the fluid-tight collar that extends to the horizontal surface top assigned altitute being determined by the supporting-point of bag bottom, to prevent leak of liquid.Above the waterproof collar of bottom 3, bag directly extends as the sidewall 2 being formed by the permeable region 1a with filtration.Also shown is two hitch poinies: corresponding to the hitch point A of setting position with corresponding to the hitch point B of drainage position.Be positioned at the 2a place, upper end of bag corresponding to the hitch point A of setting position, on symmetrical center line C; In other words,, when from this support pouch, suspend this bag in midair towards getting off with base section 3.Be placed with and depart from described point and make when from this support pouch corresponding to soaking the hitch point B of position/drainage position, be arranged in have filtration region 1a bag sidewall 2 turn to as with respect to the horizontal plane becoming than in the less angle of setting position.This angle can be for example 0, and wherein, sidewall is approximately level.Angle is also born, and wherein, sidewall is tiltedly directed downwards over the ground.In Fig. 1, soak the hitch point B of position/drainage position in the edge of watertight base section 3.

In the case of the flat bag shown in Fig. 1 to Fig. 3, wherein permeable sidewall (having filtration) comprises wider antetheca and rear wall, antetheca and rear wall are in wedge-like mode and upwards close to each other, and 2a place is bonded together in the upper end of bag, soak position/drainage position and be arranged such that the lateral edges 2b(of antetheca and rear wall exists folding point in the region 2 with filtration) tilt to make when from hitch point B support pouch, its angle with respect to the horizontal plane reduces.When directly from forward observation bag, this lateral edges is in setting position (Fig. 3) approximate upright (angles of approximately 90 °), and at immersion/drainage position (Fig. 2), it tilts for approaching horizontal surface (0 ° of angle).Therefore, be formed as wedge-like in the bag inner side that is folded at the lateral edges 2b place at antetheca and rear wall place, when from bag to cup internal drainage, guiding water drips by the material with filtration via this edge with near it.In order to achieve this end, the hitch point B that soaks position/drainage position is positioned over other edge of bag, makes soaking position and drainage position, and the contrary lateral edges 2b of bag points to downwards.Hitch point B can for example be positioned over the edge at the base section 3 between antetheca and rear wall.

Can be with suitable method mark or definite hitch point A, B in bag.They can be for example hole or ring, can be in hole or ring place clamp and suspended bag.Advantageously, hitch point A, B are connected with suspension strop 4; In other words the fastening point that, they are same suspension strop.Therefore, utilize suspension strop, the position, angle with the sidewall of the bag of filtration also can be by remaining on appropriate point adjustment by suspension strop 4.

Fig. 2 shows and soaks position and drippage position, is soaking position and drippage position, and bag can remain in water and be obtained more dry by draining.In this position, the water in cup or glass can easily be penetrated in bag and dissolve the beverage ingredient from bag.In the time upgrading bag and remain on same position and may shake from water, excessive water may drop back to cup or glass by the permeable sidewall of bag.

Bag shown in Fig. 3 is in setting position, and in this position, watertight base section 3 is at foot, and the bag of having discharged excessive water can be placed against for example desktop of counter surface 5.Therefore, the bottom of watertight base section 3 is as the area supported against desktop.In this position, the anti-sealing of base section 3 leaks from the beverage preparation of bag inner side.Watertight bottom also prevents direct contact the between surperficial and moistening beverage preparation, and this direct contact may cause water seepage flow to surface.

The bag of Fig. 1 has and the similarly general shape of bag of common tea bag, it forms by two-fold intermediate form, intermediate form has the shape of flat hose, the central authorities that the seam that flat hose has made to be formed by the overlapping edge of blank by reeling from plane blank then is stayed one of flat surfaces of flexible pipe make, this seam is retained in inner side in two-fold flexible pipe, and flat surfaces vis-a-vis forms outermost front surface and rear surface (antetheca and the rear wall) of tea bag.Hose end be bonded together and their form bag upper end 2a.Flexible pipe middle part be laterally provided with 1b district, region band, region 1b is waterproof, around flexible pipe, forms the base section 3 of fluid-tight foot in the bag that (at setting position) complete.Flexible pipe is folded into and makes enough large bottom stay part in the central, that is, their fold line L2 stays between bottom and antetheca and between bottom and rear wall, and the fully spaced apart bag that makes is kept upright.These two fold line L2 extend in waterproof region 1b inner side, wherein form the fluid-tight collar for base section 3, upwards extend specific range.Corresponding collar-shaped is formed in stays outermost antetheca and outermost rear wall rear and inwall lower end toward each other.

Between fold line L2, the lower surface of bottom is made up of waterproof region 1b completely.And the upper surface of staying the bottom of collapsible tubes inner side on opposite side is made up of waterproof region 3.The packing of bag also can be sealed completely in the region between fold line L2 before filling, wherein there is not beverage preparation in bottom, and bag 1 is " two bag " or " double-contracting " in some way, wherein, comprise beverage preparation and below completely closed space be formed at two fold line L2 with bag upper end 2a between.Also show bag, wherein, the packing of bag are not sealed between fold line L2, but in other side, bag is to be formed by the identical mode of elongated flexible tube shape part.

Determine that the hitch point B of drainage position is placed on the some place at bottom margin place in the bag of Fig. 1, at this point, between fold line L2, have the folding L3 of central authorities, slightly upwards upgrade bottom in centre.Hitch point A, B are placed in identical perpendicular, and this perpendicular is divided into two half symmetrical parts by bag and between antetheca and rear wall, extends and to disintegrate superimposing thread L2 at bottom place equidistant, is parallel to fold line L2.Fig. 1 also shows fluid-tight area supported as why not needed equably against supporting member 5, but exists the supporting-point (folding L2) against counter surface just enough, and the barycenter of bag is positioned at supporting-point inner side, as found out in horizontal projection.

Fig. 4 shows and is suitable for the blank web of the bag shown in shop drawings 1 in the manner described above.By forming bag from blank web at line of cut S cutting Continuous Rectangular blank, this blank is folded to form the flat hose shape intermediate form of opening at two ends place along fold line L1.Flexible pipe is transversely folded to form bag in the second fold line L2 of fold line before at middle part.Blank web is made up of the material with filtration, its middle body is the capped waterproof material band with certain width in the direction of fold line L2, the impervious zone band 1b in the blank that waterproof material band extension and formation on the longitudinal direction of blank web separate with blank web.The second fold line L2 stays inner side, waterproof region marginarium band is stayed between fold line L2 and the outward flange of region 1b, and described district band is formed in the collar extending in sidewall direction in bag.

The material membrane that forms impervious zone band 1b can be for example plastics.This material can be for example plastic film, that its extreme outer surfaces is waterproof or be treated to waterproof.This material is attached on the web material with filtration by for example heat seal.The packing with filtration are also known, and it can stand ultrasonic sealing with closed bag, and material impervious to water film also can be attached to such material by ultrasonic sealing.

Form the material membrane in waterproof region can be on whole surface or pointwise be attached on the packing with filtration.Material membrane also can depart from packing in its edge, as long as these edges form the collar being directed upwards towards that anti-sealing leaks in the bag completing.

In the time that bag is formed by blank, in the time that bag is hose-like intermediate form, beverage preparation can be fed in bag.After filling, when hose end is stitched together sealing bag, material remains on bag inner side.If flexible pipe is sealed at the middle section place of bottom, before the described bag of sealing, beverage preparation is introduced by two open ends of flexible pipe.

Fig. 5 shows dissimilar blank web, this blank web is used for manufacturing the bag that is tetrahedron shape, and herein, the material of watertight bottom 1a is also placed in blank web and makes in the time of cut-out and collapsible blank, it is upper that watertight base section 3 is formed into tetrahedron bottom, has the collar of the certain height of extending to.In blank, watertight region 1b is formed by delta-shaped region and the band that possesses assigned altitute, and this band is parallel to leg-of-mutton substrate and extends to therefrom sidepiece.Bottom is formed at gable inner side generally, and the collar is by forming as the region on border taking leg-of-mutton sidepiece and the band that extends to sidepiece.Leg-of-mutton top is blunt; In other words, leg-of-mutton sidepiece does not engage in the outer edge of blank.Leg-of-mutton top also keeps imperfect in the Liang Ge of triangular base edge; An edge, it is engaged by band; And in another edge, leg-of-mutton substrate and sidepiece are taking the edge of blank as border.Blank is folding along first fold superimposing thread L1 at middle part, first fold superimposing thread L1 extends to form flat bag at the junction of triangle and band, and it is at the lateral edges place being limited for leg-of-mutton substrate and band and seal at feather edge place, afterwards, can be by keeping unlimited oral area that beverage preparation is inserted in bag.Afterwards, by making to be folded in, open end place presses against each other and the oral area of closed described bag, and wherein, the directional steering of oral area is for respect to originally meeting at right angles, and forms a tetrahedral edge.In Fig. 5, dotted line has sketched the contours the region of the watertight district band 1b inner side of the bottom that forms foot, forms from the upwardly extending watertight collar of base plane in the region in this outside, region.

Fig. 6 shows from the blank of Fig. 5 and the bag of folding beverage preparation.Sidewall 2 is formed by upwardly extending tetrahedral three gores.With dotted lines the original fold line L1 extending at face middle part.In this bag, the hitch point A of setting position locates at tetrahedral upper end 2a or " summit ", and the hitch point B that soaks position/drainage position is positioned at the centerline of a face of tetrahedron sidewall 2 then compared with lowland, being wherein located immediately at the edge 2b extending on opposite side and in perpendicular identical with line of centers can point to downwards and can carry out draining by this edge in drainage position.And in the case, hitch point B is positioned in the waterproof region of base section.And in the case, hitch point A and B are engaged by suspension strop 4, suspension strop 4 at one end (A) is located to be fixed to tessarace and is located to be fixed to material impervious to water at the other end (B).

In principle, the bag working in corresponding mode can be formed as cube, and wherein, one face forms area supported, and its fluid-tight structure is continuous and extends in short transverse withthe part in the region of four other faces that a described face engages.

The present invention is not limited only to have the bag of shape shown in accompanying drawing, but it can be applied to the bag with various shapes.Fig. 7 shows bag 1, and bag 1 surface is not polyhedron but bending, for example circular or oval.And that such bag can possess is waterproof, form the region of the area supported that abuts against opposed supporting member and from its upwardly extending collar at setting position.

If by material impervious to water being attached to the scope to described region 1b in blank material, or by scope execution coating or surface treatment at this region 1b, waterproof region 1b is formed in the blank material of the filtration with porous, the blank material with filtration can be made up of the known materials for example using in tea bag, such as the mesh fabric (mesh fabric) of loosening adhesive-bonded fabric or having weaved or otherwise having made.As the packing with filtration, can for example use tulle shape adhesive-bonded fabric, that it is food compatible and can ultrasonic and heat seal, sell and made by poly(lactic acid) (PLA) with brand name BioWeb by Ahlstrom.And forming permeable region 1a is also feasible with other material of watertight region 1b with other method that forms permeable region 1a and watertight region 1b with the manufactured materials identical with bag.

If the permeable region 1a of packing is biodegradable, watertight region 1 also can be made into biodegradable.If use the identical packing film that wherein forms permeable region, this can be by selecting the film of being made up of biodegradable material to realize.If form watertight region by waterproof material sheet being adhered on permeable (having filtration) and biodegradable packing, this can be by selecting for example biodegradable plastics to carry out.As biodegradable plastics, consider permeable region and watertight region the two, can use for example biodegradable plastics, such as poly(lactic acid) (PLA) or certain polyhydroxyalkanoate (PHA).Therefore, PLA and PHA are hydrophobic, if but want the water-proofness of the outside face that increases watertight region, this can be undertaken by coating or other process for treating surface.The packing with filtration also can be made up of biodegradable natural fiber, wherein, can comprise biodegradable plastics, for example PLA or PHA as the attached material piece thereon in watertight region.The material piece of this biodegradable plastics can be processed by coating or another process for treating surface.

And, the present invention is not limited in the bag that has hitch point and determine setting position and drainage position, but it goes for the bag that comprises beverage preparation that is designed to freely be placed by hand, wherein they can " soak into " and play and remain on drainage position and then by pointing or instrument/utensil is placed into setting position by soup ladle or finger lift in cup or glass, at setting position, fluid-tight area supported abuts against counter surface.

The fluid-tight structure 1b having added as individual member tablet can be arranged to conform to/meet flexible packages and make it by being arranged in the correct position of bag and being formed as watertight area supported and the watertight collar during when forming bag, to bag filling beverage preparation and sealing bag, as shown at Fig. 1 to Fig. 7.Rigidity " pallet " or " groove " that fluid-tight structure is also made up of for example plastics, there is the upwardly extending collar, wherein, it can be fixed in the bag that correct position in packing completes it and form the corresponding fluid-tight structure with corresponding function in its bottom section.

In the packing that sealing beverage preparation, the face area in permeable region is preferably more than the face area in waterproof region.The ratio of area is advantageously greater than 3, is more advantageously greater than 5.

Bag can pack in single protective package one by one by the mode identical with tea bag, or some bags can once pack in the larger packaging of one.

Claims (6)

1. the bag for beverage preparation, its disposable closed bag (1) for being formed by packing, the beverage preparation portion placed within of solid matter, when described bag is soaked in water when preparing described beverage, described substance is emitted the component of described beverage by described permeable packing, it is characterized in that, in the part of described packing, described bag comprises area supported, described area supported is formed as fluid-tight structure (1b), described fluid-tight structure (1b) has the upwards size as the assigned altitute collar, to prevent that the described moistening beverage preparation of water from described bag from spilling.

2. bag according to claim 1, it is characterized in that, the described base section (3) of described bag is formed as fluid-tight structure (1b), in described fluid-tight structure (1b) top, the described sidewall (2) of described bag is permeable, and the described waterproof region of described base section (3) extends to the assigned altitute in the described direction of described sidewall (2) as the collar.

3. bag according to claim 1 and 2, it is characterized in that, described bag comprises two hitch poinies, described two hitch poinies are defined for two different obliquities of described bag, wherein said the first hitch point (A) is determined setting position, at described setting position, get off to hang described bag with area supported court, and described the second hitch point (B) is determined drainage position, in described drainage position, described area supported turns to as with respect to described setting position at an angle, for example, by this way, , the sidewall (2) of the described bag above the described base section (3) of described bag turns to as becoming the angle less than described setting position with respect to described horizontal surface.

4. bag according to claim 3, is characterized in that, described hitch point (A, B) is connected by suspension strop (4).

5. according to the bag described in claim 3 or 4, it is characterized in that, described the second hitch point (B) limits a position, in described position, points to downwards with respect to the edge (2b) on the opposition side of the position opposite of described hitch point at described bag.

6. according to the bag described in any one in claim 3 to 5, it is characterized in that, described the second hitch point (B) is positioned in described fluid-tight structure (1b).