CN103946129B - bag for beverage preparation - Google Patents

Abstract

In the inside disposably closing bag (1) that packaging material are formed, placing solid matter beverage preparation, when during bag is soaked in water to prepare beverage, described material can release beverage ingredient by permeable packaging material.In the part of packaging material, bag includes supporting surface, and supporting surface is formed fluid-tight structure (1b), and fluid-tight structure (1b) has the upwards size of the collar as assigned altitute, to prevent the water moistening beverage preparation from bag from spilling.

Description

Bag for beverage preparation

Technical field

The present invention relates to a kind of bag for beverage preparation, it is for disposably to be closed bag by what packaging material were formed, the beverage preparation portion placed within of solid matter, when described bag is soaked in water to prepare described beverage, described material can release the component of beverage by permeable packaging material.

Background technology

The beverage preparation in solid raw material form of the beverage for preparing by brewing or extract loads in permeable bag (filter bag) to prevent this material and beverage blends.Filter bag can load then in enclose bag and being formed in the packaging material of the single protective package of filter bag.Such protective package can load in bigger box-like marketing packing.The modal example of this kind of packaging is will be by brewing or extract the packaging of the tea beverage prepared, i.e. the packaging of tea bag.Such as in United States Patent (USP) 3, disclosing the flat rectangular protective package of a kind of routine in 175,911, the rope of tea bag is also secured in this packaging.

When use contain for the raw material of beverage and be made up of suitable filter material bag time, it is placed in cup, in cup, hot water or cup have comprised hot water, afterwards, this bag is dipped in water up to beverage ingredient from the water that the raw material being contained in filter bag are dissolved in cup to desired concentration.

The problem that result in this kind of packaging due to following reality: when soaking, the raw material in filter bag get wet and expand.When taking out this bag from cup, it understands unrest of being made dirty in place.If it is intended to be discharged in cup by remaining liq by extruding this bag, if not using instrument, it is difficult in the case of hand of not making dirty carry out.Even if making this bag become more dry by extruding, the most always some liquid can be stayed in bag, from the bag sound of rain pattering to the surface placing this bag.

Multiple patent document discloses the solution overcoming these problems.The most common scheme overcoming this problem is that the packaging making this bag in some way " can be opened " at bottom, thus this bag can be delegated to when being carried by rope/carry in cup and in mentioning with rope and being put back into and pack, wherein this packaging can be used for extruding this bag without the finger of the people that makes dirty and for keeping this bag, as in such as international publication WO Disclosed in 96/01773.However, it is very difficult to the bag of expansion/swelling is pulled in this packaging, if this packaging be dimensioned to closely mate/meet the size of dry bag.And, if horizontal level packaging being placed on after usage, liquid still may pass through the flows opened of packaging.

Such tea bag below moreover it is known that: wherein, guides suspension strop to make by drawing this rope to be extracted by bag.This needs the special navigation of rope to arrange and to the special attachment of bag to obtain for the ring extracted by bag, as disclosed in such as US 2004/071830.

International publication WO 98/04460 discloses a kind of tea bag, this tea bag draining can be made by making bag tilt to about 45 degree of angles, wherein bag and vertical edge form " most advanced and sophisticated " being downwardly oriented, in this " most advanced and sophisticated " top, water gathers and is formed a kind of bed, and this bed generates the pressure more efficiently removing water from bag.According to the embodiment shown in Fig. 3 A and Fig. 3 B, make bag can obtain drainage position so that deflected position hangs by one end of deviation center (centre symmetry line of bag) fastening rope.

Such elongate pocket below moreover it is known that: it can serve as stirring rod and makes when stirring water, and the material being included in bag is dissolved in the water by porous wall simultaneously.Such as, document US 2002/0162461 discloses and uses the micropore (less than 0.5 to 0.35mm) separated densely in bag material, thus reduces capillary effect/impact, and water can enter bag and the material that is dissolved in the water can by diffusion from bag out.Bag can be used to prepare beverage from water-soluble or extractible material.

When using micropore, the water leakage from bag may be reduced after usage, but contact with surface and may trigger water from the bag sound of rain pattering out.When such bag is for extractible powder drink preparation (such as tealeaves), water can not suitably flow through powder and " flushing " it, this flushing for discharging flavouring agent as well as possible in water it is critical that.Thus bag can be used to be stirred in initial step, powder is forced to be loaded in bag by full densification, but when it becomes moistening, powder is by expansion and is unfavorable for material absorbing.

Due to reason mentioned above, particularly powder formulation (will be from powder formulation to extraction of substance in water) loads in tulle pouch, and tulle pouch has bigger open list area and relatively thin allowing the water to is flowed turnover bag and rinse the powder loosely loaded relative to the volume of bag.This fills the mode of tealeaves just.It is undesirable that extracted by bag with finger or special tool(s)/utensil, that extracts unique substitutes that to do rule be to discharge water from bag, such as with the deflected position proposed in WO 98/04460.

Can be shown that after the bag long enough time (continuing the 2-3 second) on the opposing open surface soaked in water by shake carries out draining no longer have drop to occur, although bag comprises a large amount of water by experiment.This is because kept the remainder of water by the absorbability of powder and the surface tension of water.But when touching the surface of this bag, more water will from this touch point out；In other words, broken at contact point and had the water surface tension of bonding force (cohesive).When the bag seeming not drip is positioned on the surface of solids, formed and when contacting of water in bag, identical phenomenon occurs.

In a word, therefore in institute's marsupial, relate to haveing a problem in that following reality: in order to ensure use and pass through to drip carry out possible draining after anhydrous can from bag out, user the bag soaked in water must be positioned in special tray or packs in avoid desktop of making dirty.

Summary of the invention

It is an object of the invention to get rid of defect mentioned above and propose a kind of disposable bags for beverage preparation, this bag is without independent pallet or pressurizing unit, but it can be arranged so that desktop maybe to keep the another location of cleaning after dipping.In order to realize this purpose, being characterized mainly in that of bag according to the present invention, in the part of packaging material, bag includes supporting surface, described supporting surface is formed as fluid-tight structure (1b), described fluid-tight structure (1b) has the upwards size as the assigned altitute collar, to prevent the water described moistening beverage preparation from described bag from spilling.

This bag includes supporting surface, and this supporting surface is formed as fluid-tight structure.This supporting surface abuts against and moistens the counter surface that bag is placed in after steeping.Supporting surface provides supporting-point to bag, and this supporting-point support pouch makes it will remain in supporting surface at foot against the position of counter surface.The fluid-tight structure on supporting surface upwardly extends (above supporting-point) as the collar of assigned altitute, in the horizontal direction around whole bag and prevent water in the horizontal direction from the minimum point of moistening beverage preparation from the bag sound of rain pattering the most out.Fluid-tight structure is the integral part of the packaging material (enclose the lapping of beverage preparation) of bag, and the packaging material of bag keep permeable in other parts, i.e. have filtration.In a replacement scheme, vertically the base section of bag is (i.e., highly more than the maximum sized bag of bag on the direction transverse to height) or the base section of polyhedron bag be formed as fluid-tight structure, at fluid-tight superstructure, the sidewall of the bag extended in the height direction is the beverage preparation that permeable (having filtration) is included in bag with immersion so that its component will be dissolved in the water.The waterproof zone 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 supporting surface formed by bottom.This bag can be the bag made by folding and sew up the packaging material of bag, such as, have the general shape of conventional tea bag or tetrahedron or another is polyhedron-shaped.After the bag soaked in water is uprightly positioned on desktop or another counter surface, it is intended to the water spilt from beverage preparation will remain in the one " groove " inside fluid-tight base section.

Fluid-tight base section can such as be arranged at the bottom of the beverage preparation bag with common tea bag shape, or at the bottom surface with tetrahedron or other polyhedron-shaped bag, and it is disposed around bottom.Therefore it cover the smaller portions of surface area of lapping of bag and do not detract from soaking efficiency.The most described base section is probably and is covered with polyhedron bag to be placed in foot against the region in a face of counter surface, extend to other basifacial region in the height direction from this face, or be covered with the region of the bottom of the bag with common upright tea bag shape and bottom this, extend to the region of vertical sides bottom in the height direction.It is likely in the described fluid-tight structure relatively big bear surface in bag extend, such as in a larger side portion of flat bag.Therefore bag is positioned over horizontal level, and wherein supporting surface is against counter surface.In this replacement scheme, the surface area that can be used for soaking is less.

It is dissolved in water and later from bag draining in order to the component from bag can be better controled over, this bag includes two hitch points, when the barycenter of bag is placed in below hitch point due to gravity, the two hitch point determine bag two different obliquities: position is set, wherein bag with fluid-tight supporting surface towards lower suspention；And, drainage position, wherein supporting surface turns to into angled relative to arranging position.Such as 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 ratio arranging the angle that position is less, and the lower surface of base section is accordingly to sides tapered, i.e. bag is in obliquity.In this drainage position, wherein bag be probably inclination or level, or even on end downwards, can after dipping by permeable packaging material more easily from bag draining.When the inside dimension of cup or glass allows, this position is also used as soaking position, wherein when solid beverage preparation accumulates on waterproof sidewall, the beverage preparation being contained in bag better contacts with the water in cup or glass, and water rinses the component of beverage preparation and the preparation being contained in bag and is preferably dissolved in the water.When the bag soaked in this position is mentioned from water, it can drain water in same position.Bag in another location is soaked in water can also be mentioned from cup or glass and forward drainage position to.

Utilize that different hitch points obtains position is set and drainage position may be used in institute's marsupial, regardless of their general shape.Therefore, arranging position, supporting surface is positioned at foot towards counter surface, and in drainage position, supporting surface is turned into another location and the permeable region in packaging material and turns to more towards horizontal plane.

When bag forwards arrange position to from drainage position, the beverage preparation being contained therein will again fill on watertight bottom atop part and will not result in leakage problem when bag is configured of fluid-tight supporting surface against desktop or another counter surface.May will be retained in fluid-tight structural top and sidepiece will not be leaked into from the water of moistening beverage preparation leakage, because fluid-tight structure also has the upwards size in collar form.

The hitch point of position is set in bag on the sidepiece contrary with supporting surface, and relative to point mentioned above, the hitch point of drainage position is closer to the supporting surface of bag, in the bottom the most in the sidewall or in butt-ended bag.Preferably, during supporting-point is positioned over the fluid-tight structure of bag.

It practice, overcome gravity and the hitch point of support pouch can be the fastening point of suspension strop.Such as can use a suspension strop, this suspension strop forms ring between fastening point.Being likely to accurately adjust the angle of the drainage position of bag by applying supporting force on two hitch points simultaneously, and bag can also accurately be soaked in desired position, this desired position likely differs from and arranges position and drainage position.

Bag is originally as disposable bags, in disposable bags, close solid beverage preparation make only by tearing packaging material or by opening by the seam being peripherally sealed together of packaging material formed by sealing these closing packaging material, or utilize rivet, self-adhesive label, the knot of bond material or another corresponding enclosed member for good and all sealing and packing material and established different types of seam by opening, open this bag.The blank including permeable region and watertight region can be utilized to make bag by folding and sewing up with formation closing structure, and the bottom of this closing structure possesses the water-tight structure being made up of the watertight region of blank.Bag is formed with and a kind of possess sufficiently large supporting surface and make bag will remain in the structure arranging position simultaneously.It is sufficiently large and carry bag in stand up position that butt-ended bag can be made into the basal surface of bottom.

By the following method blank can be embodied as permeable region (having the region of filtration) and the combination in watertight region: covering waterproof material film to the green part being made up of the material with filtration the most completely, the most permeable region will remain in the areas outside covered by waterproof material；Or by starting from the blank being originally made up of waterproof material and by revising in a part for the surface area that this material makes permeable region be formed at blank, at this permeable areas outside, leave the unmodified region of waterproof material.Can revise out permeable region in blank material such as by boring a hole with given bore density and hole size, hole density and the combined effect of hole size provide enough open list areas.It is likely to revise and is generally of the material of filtration and has been used for making desired part become waterproof, such as by coating technique, and without being attached on filtration material by the most impermeable sheet that completes of material membrane.

Compacting material membrane can completely or pointwise is fastened on packaging material.

Blank can be set to blank web one by one, separates to the blank of sizing from blank web, folds, and is filled with solid beverage preparation, and finally seals to form Guan Bi bag in appropriate steps.

Accompanying drawing explanation

It is more fully described the present invention, in the accompanying drawings following with reference to accompanying drawing:

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

Fig. 2 shows with front view and is in the bag soaking position/drainage position,

Fig. 3 shows with front view and is in the bag arranging position,

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

Fig. 5 shows another blank web,

Fig. 6 shows that utilization is from the bag made by the blank of the blank web of Fig. 5；And

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

Detailed description of the invention

Filtration formulation loads in filter bag 1, and filter bag 1 mainly includes permeable material.Beverage preparation is solid-state, such as, powder or particle or various vegetable parts, beverage can be prepared by bag 1 being immersed in water lasting right times from solid beverage preparation, wherein beverage ingredient is dissolved into water from filter bag.This process is often referred to as soaked.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 (such as, tetrahedron bag, " pyramid bag "), and polyhedron bag becomes more common recently.It can start from bag blank by the automation equipment manufacture of prior art and filling, and bag blank has been arranged fluid-tight (i.e. watertight) region in advance in the part on its surface.

Bag 1 is by folding and to sew up suitable packaging material (lapping) and formed disposably close bag, in forming step when bag is partly opened, loads beverage preparation inside bag.Load beverage preparation in this way, it may be assumed that it is only filled with the part (filling extent only has half or even less than half, and volume based on free settling preparation calculates) of internal volume for bag.Which improve the dissolving of the component from beverage preparation.The bag of Fig. 1 is the butt-ended bag with conventional tea bag shape.The base section 3 of bag is from fluid-tight structure 1b in the bottom of foot to assigned altitute.Structure 1 has upwards size, and in other words, it has the collar that is waterproof and that extend to assigned altitute.Fluid-tight structure 1b is the region in the part of surface area that is waterproof and that be arranged in packaging material, this region is placed with in packaging material in the bag completed, it also constitutes and extends to the fluid-tight collar of assigned altitute above the horizontal plane that the supporting-point bottom by bag is determined, to prevent liquid from leaking.Above the waterproof collar of bottom 3, bag extends directly as the sidewall 2 formed by the permeable region 1a with filtration.Also shown is two hitch points: corresponding to arranging the hitch point A of position and corresponding to the hitch point B of drainage position.It is positioned at the upper end 2a of bag, in symmetrical center line C corresponding to arranging the hitch point A of position；In other words, when from this dot point bag, with base section 3 towards this bag of suspention that gets off.Corresponding to soak position/drainage position hitch point B be placed with deviation described point make when from this dot point bag, the sidewall 2 being positioned at the bag in the region 1a with filtration turns to as with respect to the horizontal plane becoming ratio arranging the angle that position is less.This angle can for example, 0, wherein, sidewall is approximately level.Angle may also be negative, and wherein, sidewall is downwardly oriented the most over the ground.In FIG, the hitch point B edge in watertight bottom part 3 of position/drainage position is soaked.

In the case of the flat bag shown in Fig. 1 to Fig. 3, the most permeable sidewall (having filtration) includes wider antetheca and rear wall, antetheca and rear wall are with wedge like manner and the most close to each other, and it is bonded together at the upper end 2a of bag, soak position/drainage position and be arranged such that the lateral edges 2b(of antetheca and rear wall exists the point of folding in the region 2 have 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 arranging position (Fig. 3) near upright (angles of about 90 °), and at immersion/drainage position (Fig. 2), it tilts is close to horizontal plane (0 ° of angle).Therefore, being folded in inside bag at the lateral edges 2b at antetheca and rear wall is formed as wedge-like, when from bag to cup internal drainage time, guide water drip via this edge with near it by having the material of filtration.In order to realize this purpose, the hitch point B soaking position/drainage position is positioned over other edge of bag so that soaking position and drainage position, and the contrary lateral edges 2b of bag is downwardly directed.Hitch point B can such as be positioned over the edge at the base section 3 between antetheca and rear wall.

Can mark in bag in a suitable manner or determine hitch point A, B.They can be such as hole or ring, can clamp and suspended bag at hole or ring.Advantageously, hitch point A, B is connected with suspension strop 4；In other words, they are the fastening point of same suspension strop.Therefore, utilizing suspension strop, the Angle Position of the sidewall with the bag of filtration can also be adjusted by suspension strop 4 is maintained at appropriate point.

Fig. 2 shows immersion position and dripping position, is soaking position and dripping position, and bag may remain in water and obtained by draining more dry.In this position, in the water in cup or glass can be easily penetrate into bag and dissolve the beverage ingredient from bag.When upgrading bag from water and being maintained at same position and may shake, excessive water may drop back to cup or glass by the permeable sidewall of bag.

Bag shown in Fig. 3 is in and arranges position, and in this position, watertight bottom part 3 is at foot, and the bag having discharged excessive water can be placed against counter surface 5 such as desktop.Therefore, the bottom of watertight bottom part 3 is used as the supporting surface against desktop.In this position, base section 3 prevents water beverage preparation leakage inside bag.What watertight bottom was also prevented between surface and moistening beverage preparation directly contacts, and this direct contact is likely to result in water seepage flow to surface.

The bag of Fig. 1 has the general shape of the bag similar with common tea bag, it is formed by two-fold intermediate form, intermediate form has the shape of flat hose, flat hose is the most by making the central authorities of one of the seam flat surfaces staying flexible pipe formed by the overlapping edge of blank make from planar stock material winding, 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 is bonded together and they form the upper end 2a of bag.The zone being transversely provided with region 1b in the middle part of flexible pipe, region 1b is waterproof, around flexible pipe, constitutes the base section 3 of fluid-tight foot in the bag that (arranging position) completes.Flexible pipe is so folded that sufficiently large bottom is left in them centre part, i.e. the fold line L2 of themselves stays between bottom and antetheca and between bottom and rear wall, is spaced sufficiently apart so that bag is kept upright.The two fold line L2 extends inside waterproof region 1b, wherein forms the fluid-tight collar for base section 3, upwardly extends specific range.The corresponding collar is formed at 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 staying inside collapsible tubes bottom on the opposite sides is made up of waterproof region 3.The packaging material of bag can also fully seal together in region between fold line L2 before filling, beverage preparation is wherein there is not in bottom, and bag 1 is " double bag " or " double-contracting " in some way, wherein, comprise beverage preparation and the space of completely closed in lower section is formed between two fold line L2 and the upper end 2a of bag.Being also shown for bag, wherein, the packaging material of bag are not sealed between fold line L2, but in other side, bag by by elongated flexible tube shape part identical in the way of formed.

Determine that the hitch point B of drainage position is placed at the point at bottom margin in the bag of Fig. 1, at this point, between fold line L2, there are central authorities fold L3, upgrade bottom slightly upward in centre.Hitch point A, B are placed in identical perpendicular, and bag is divided into two symmetrical half and extends between antetheca and rear wall and disintegrate superimposing thread L2 at bottom equidistantly by this perpendicular, is parallel to fold line L2.Fig. 1 also show how fluid-tight supporting surface need not equably against supporting member 5, but there is the supporting-point (folding L2) against counter surface and be sufficient to, and the barycenter of bag is positioned at inside supporting-point, as can be seen that in floor projection.

Fig. 4 is shown suitable for manufacturing in the manner described above the blank web of the bag shown in Fig. 1.By from blank web at line of cut S at cut Continuous Rectangular blank form bag, this blank along fold line L1 fold to be formed at the flat hose shape intermediate form opened at two ends.Flexible pipe folds to form bag along the second fold line L2 transverse to 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 specific width on the direction of fold line L2, and waterproof material band extends on the longitudinal direction of blank web and constitutes waterproof zone 1b in the blank separated with blank web.Second fold line L2 stays waterproof area inside and makes edge zone stay between the outward flange of fold line L2 and region 1b, and described zone is formed in bag the collar extended in sidewall direction.

The material membrane constituting waterproof zone 1b can for example, plastics.This material can for example, plastic foil, its extreme outer surfaces is waterproof or is treated to waterproof.This material is attached to by such as heat seal to be had on the web material of filtration.The packaging material with filtration are also known, and it can stand ultrasonic sealing to close bag, and material impervious to water film can also be attached to such material by ultrasonic sealing.

The material membrane forming waterproof region can on the whole surface or pointwise is attached to have on the packaging material of filtration.Material membrane can also depart from packaging material in its edge, as long as these edges constitute the collar being directed upwards towards preventing water from leaking in the bag completed.

When bag is formed by blank, when bag is hose-like intermediate form, beverage preparation can be fed in bag.When after filling, when sealing by hose end being stitched together bag, material is maintained at inside bag.If flexible pipe is sealed at the middle section of bottom, before sealing described bag, beverage preparation is introduced by two openends of flexible pipe.

Fig. 5 shows different types of blank web, this blank web is used for manufacturing the bag in tetrahedron shape, and herein, the material of watertight bottom 1a is also placed in blank web and makes when cut-out and collapsible blank, watertight bottom part 3 is formed on bottom tetrahedron, has the collar extending to certain height.In blank, watertight region 1b is formed by delta-shaped region and the band possessing assigned altitute, and this band is parallel to the substrate of triangle and extends to sidepiece therefrom.Bottom generally forms inside gable, and the collar is by with the sidepiece of triangle with extend to the band of the sidepiece region as border and constituted.The top of triangle is blunt；In other words, the sidepiece of triangle does not engage in the outer edge of blank.The top of triangle also keeps imperfect in the Liang Ge edge of triangular base；An edge, it is engaged by band；And in another edge, the substrate of triangle and sidepiece are with the edge of blank as border.Blank folds along the first fold line L1 at middle part, first fold line L1 extends at the abutment of triangle and band to form flat bag, and it seals at the lateral edges that substrate and the band for triangle is any limitation as and at feather edge, afterwards, by keeping the oral area opened wide, beverage preparation can be inserted in bag.Afterwards, pressing against each other by making to be folded in and close the oral area of described bag at open end, wherein, the directional steering of oral area is relative to the most at a right angle, and forms a tetrahedral edge.In Figure 5, dotted line has sketched the contours the region inside watertight zone 1b of the bottom forming foot, is formed from the base plane upwardly extending watertight collar in the region of this areas outside.

Fig. 6 shows the bag of the beverage preparation folded from the blank of Fig. 5.Sidewall 2 is formed by upwardly extending tetrahedral three gores.The original fold line L1 extended at a Middle face is depicted with dotted line.In this bag, the hitch point A of position is set at tetrahedral upper end 2a or " summit " place, and the hitch point B soaking position/drainage position is positioned at the centerline in a face of tetrahedron sidewall 2 the most lower, wherein it is located immediately on opposite side and the edge 2b that extends in perpendicular identical with center line can be downwardly directed in drainage position and can carry out draining by this edge.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 is engaged by suspension strop 4, suspension strop 4 at one end (A) place is fixed to tessarace and is fixed to material impervious to water at the other end (B) place.

In principle, the bag worked in corresponding mode can be formed as cube, and wherein, one face forms supporting surface, and its fluid-tight structure is continuous print and extends in the height directionWithThe part in the region in four other faces that one face engages.

The present invention is not limited only to the bag with shape shown in accompanying drawing, but it can apply to have variously-shaped bag.Fig. 7 shows bag 1, the surface of bag 1 not polyhedron but bending, the most circular or oval.And, such bag can possess waterproof, arrange position formed abut against opposed supporting member supporting surface region and from its upwardly extending collar.

If by the scope that material impervious to water is attached in blank material to described region 1b, or by processing make waterproof region 1b be formed in the blank material of the filtration with porous in the execution coating of the scope of this region 1b or surface, the blank material then with filtration can be made up of the known materials such as used in tea bag, such as bulky nonwoven fabric or the mesh fabric (mesh fabric) having weaved or otherwise made.As having the packaging material of filtration, can such as use gauze-like adhesive-bonded fabric, its be food compatible and can ultrasonic and heat seal, Ahlstrom sell with brand name BioWeb and be made up of PLA (PLA).And, form permeable region 1a and other material of watertight region 1b with manufacture material to form other method of permeable region 1a and watertight region 1b be also feasible with identical with bag.

If the permeable region 1a of packaging material is biodegradable, watertight region 1 can also be made into biodegradable.If using the identical packaging material film wherein forming permeable region, this can realize by selecting the film being made up of biodegradable material.If forming watertight region on the most permeable (having filtration) and biodegradable packaging material by being adhered to by waterproof material sheet, this can be carried out by selecting such as biodegradable plastics.As biodegradable plastics, it is contemplated that permeable region and watertight both areas, such as biodegradable plastics, such as PLA (PLA) or certain polyhydroxyalkanoate (PHA) can be used.Therefore, PLA and PHA is hydrophobic, but if it is intended to increase the water proofing property of the outer surface in watertight region, this can be carried out by coating or other process for treating surface.The packaging material with filtration can also be made up of biodegradable natural fiber, wherein, can include biodegradable plastics, such as PLA or PHA as watertight region attachment material piece thereon.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 having hitch point and determines the bag arranging position and drainage position, but it goes for the bag comprising beverage preparation that is designed to freely be placed by hand, wherein they " can be impregnated with " in cup or glass and play and be maintained at drainage position by soup ladle or finger lift and be then placed into arranged position by finger or instrument/utensil, arranging position, fluid-tight supporting surface abuts against counter surface.

Fluid-tight structure 1b added as individual member tablet can be arranged to conform to/meet flexible packages and makes its correct position that will be located in bag and be formed into watertight supporting surface and the watertight collar, as shown in Fig. 1 to Fig. 7 when forming bag, filling beverage preparation to bag and seal bag.Fluid-tight structure may also be the rigidity " pallet " or " groove " being made up of such as plastics, there is the upwardly extending collar, wherein, its correct position can being fixed in packaging material in its bottom section makes it form the corresponding fluid-tight structure with corresponding function in the bag completed.

In the packaging material that enclose beverage preparation, the surface area in permeable region is preferably more than the surface area in waterproof region.Area ratio is be advantageously greater than 3, more advantageously more than 5.

Bag can load one by one in single protective package by the mode identical with tea bag, if or dry bag can once load in the bigger packaging of one.

Claims (5)

1. the bag for beverage preparation, it is for disposably to be closed bag (1) by what packaging material were formed, the beverage preparation portion placed within of solid matter, when described bag is soaked in water to prepare beverage, described material can release the component of beverage by permeable packaging material, it is characterized in that, in the part of described packaging material, described bag includes supporting surface, described supporting surface is the base section (3) of bag and is formed as fluid-tight structure (1b), sidewall (2) at the described bag in described fluid-tight structure (1b) top is permeable, and described fluid-tight structure (1b) has the upwards size as the assigned altitute collar, it upwardly extends in the side of sidewall, to prevent the water moistening beverage preparation from described bag from spilling.

Bag the most according to claim 1, it is characterized in that, described bag includes two hitch points, said two hitch point limits two different obliquities for described bag, wherein the first hitch point (A) determines and arranges position, described, position is set, with supporting surface towards getting off to hang described bag, and the second hitch point (B) determines drainage position, in described drainage position, described supporting surface turns to as arranging position at an angle relative to described, by this way, i.e., sidewall (2) at the described bag of described base section (3) top of described bag turns to and arranges, than described, the angle that position is less for respect to the horizontal plane becoming.

Bag the most according to claim 2, it is characterised in that described first hitch point (A) and described second hitch point (B) are connected by suspension strop (4).

4. according to the bag described in Claims 2 or 3, it is characterised in that described second hitch point (B) limits drainage position, in described drainage position, downwardly directed relative to the edge (2b) on the opposition side of the position of described second hitch point (B) at described bag.

5. according to the bag described in Claims 2 or 3, it is characterised in that described second hitch point (B) is positioned in described fluid-tight structure (1b).