JP2007508906A5 - - Google Patents

Description

Exhaust collection pouch that can be washed with water, pouch-in pouch type product that uses this pouch

  This application claims priority from US Provisional Application No. 60 / 512,759, filed Oct. 21, 2003, and Danish Application No. 2003/01550, filed Oct. 21, 2003.

The present invention relates to a washable excrement collection pouch, and in particular, claims priority based on US Provisional Application No. 60 / 512,760, filed Oct. 21, 2003, and as co-inventor Claudio Giori. US Pat. No. 5,865,819 with the name of Jori ) and the ostomy appliance of the pouch-in-pouch type generally disclosed in pending US patent application Ser. No. 10 / No. The present invention relates to a biodegradable pouch suitable for use as an inner (inner) pouch that can be disposable in a toilet. This disposable pouch having a pair of walls, which are stapled together along these peripheral edges to define a body waste receiving put the chamber, one of these side walls has a excrement receiving opening, which Communicate with this chamber. External attachment means are provided around the opening, which is for attaching the pouch (or pouch assembly) to the wearer.

The only inner pouch currently on the market is a pouch commercially available from Welland Medical and is protected by US Pat. No. 5,938,647. This pouch is made of polyvinyl alcohol that is soluble in hot water. The problem with polyvinyl alcohol is that as time passes, it becomes brittle and noisy, and biodegradability is limited. Therefore, there is a need for an inner pouch file that is flexible, water impermeable, low in noise (an important requirement for ostomy and fecal incontinence ), and has good biodegradability.

The pouch wall embodying the present invention is composed of a thin, heat-sealable (including RF-sealable), liquid-impermeable, single-layer film that is plasticized. Made of a composition containing a biodegradable aliphatic polyester, a plasticized biodegradable aliphatic aromatic copolyester, or a blend (blend) of these, biodegradable and water dispersible attached thereto A water-disintegrating layer made of cellulosic fibers, most preferably cellulosic fibers. The polyester or copolyester is formulated with an aliphatic ester plasticizer such as triethyl citrate (triethyl citrate) or vegetable oil. Such a plasticizer imparts greater flexibility to the film, suppresses noise emitted from the film when wrinkles occur, and pushes the resin into the film or coating by 10 microns (0. 8 mil) or less. It has also been found that the presence of the plasticizer effectively increases the biodegradation rate of the film. Starch (starch) may also be used advantageously as a biodegradable plasticizer.

  The film composition comprises about 70% to 95% by weight of the biodegradable aliphatic polyester or aliphatic aromatic copolyester and about 5% to 30% by weight of biodegradable plasticizer (s). And a blend thereof. More desirably, the formulation is in the range of about 75% to 93% polyester or copolyester and about 7% to 25% biodegradable plasticizer (s). A preferred composition is believed to be about 90% polyester or copolyester and about 10% plasticizer (s).

  The aliphatic polyester may comprise a polymer prepared by ring-opening polymerization of a lactone, preferably polycaprolactone. The aliphatic aromatic copolymer may comprise a condensation product of glycol with a combination of an aliphatic diacid and an aromatic diacid, the aromatic diacid being less than 20 mole percent.

Increased biodegradability to minimize noise, to reduce costs, the film is ultrathin, should have a thickness of about 40 microns (1.57 mils). Preferred thickness range is about 6-40 microns (0.24 to 1.57 mils), considered more preferred range is from about 10 to 35 microns (0.39 to 1.38 mils). Particularly effective results, this thickness range is believed to occur when about 15 to 30 microns (0.59 to 1.18 mils).

The ultra-thin monolayer film has the above advantages and features are enhanced by water disintegrating coating layer defining an outer surface of the pouch. The coating layer is composed of random orientation of the water-dispersible fibers, a no water-insoluble binder (preferably, completely without a binder), have significant dry strength, no or practically elongation However, it lacks wet strength. Tissue paper with a high content of cellulosic fibers, preferably 100%, is considered particularly effective. Monolayer film, the entire surface of its continuously, to the tissue paper or other reinforcing substrate, by any suitable means, may be fixed. Adhesive attachment (such as with water-soluble and biodegradable adhesives) is considered feasible while the polyester or copolyester is extruded onto this paper substrate to form a thin but continuous coating thereon Or it is considered more effective to laminate these two layers together using heat, and the attachment between the opposing surfaces of these two layers is in each case made using heat. It is mechanical in nature. As long as the outer surface of the pouch is dry, the coated tissue paper provides mechanical strength, softness, and noise reduction, but the water can be removed as if the pouch is discarded into a flush toilet. upon exposure to, the tissue is rapidly disintegrating and rapidly absorbs water, to wet the surface of the film, by reducing the buoyancy of the pouch, it is believed to contribute to water-washable.

An important aspect of the present invention is the attachment strength between substantially the entire surface of the coating layer (excluding its peripheral edge) and the film that together forms the walls of the water-washable pouch. Or in a lack of strength (along these peripheral edges where these layers are firmly heat sealed together to form a complete pouch). In order to avoid the formation of unacceptable pinholes in the film, it is essential that none of the covering layer fibers protrude through the film and penetrate to the film to any extent that can be confirmed. is there. The film can be any of a variety of different thicknesses (although it is ultra-thin anyway) and it is considered useless to measure maximum penetration anyway. However, the degree of bonding between these layers of paper and film is such that the two layers are about 2-10 g / inch (0.02-0.1 Newton / inch), preferably about 3-6 g / inch (from each other). Penetration that can be confirmed when peeled off by applying a 180 ° peel force in the range of 0.03 to 0.06 Newtons / inch (when dry) and both layers are left intact. It has been found that no occurs and no pinholes are formed. Under such conditions, these layers are found to be bonded together with sufficient force, maintaining the integration of the pouch wall during use and without unacceptable risk of penetration into the fiber. .

Since the polyester or copolyester film can be heat sealed (including those that can be RF sealed), the film can be easily pouched using conventional heat sealing methods. The film is covered with a soft, flexible, fibrous back layer as described above, yet heat sealing is easily achieved, since the polymer layer of the pouch wall faces inward. This is why they may be fused together. If the pouch serves as the inner pouch of 2 pouch system, if the inner pouch of porous substrates in tissue paper or other suitable fibrous, having a porous coating layer with fibrous, which also Regardless, heat sealing between the inner pouch film, the fibrous, porous coating layer, and the outer pouch film may be made along the peripheral edges of the two pouches. . In such a case, the seal between the outer pouch wall and the fiber layer of the inner pouch wall is weaker than the seal between the two walls of the inner pouch so that the outer pouch The inner pouch and its contents, which are torn off from the inner pouch and do not adversely affect the integration of the inner pouch and are not yet damaged at this point, enter the toilet pool. And may be discarded, initiating the decay and biodegradation process.

In such “pouch-in-pouch” articles, if the washable inner pouch wall consists of a weakly bonded thermoplastic film and tissue paper layer, tearing off the outer pouch It is essential not to cause disassembly of these paper and film layers of the inner pouch because, as already mentioned, the paper layer is believed to contribute significantly to the washability of the inner pouch. Also, the retention of the soft paper layer by the inner pouch provides tactile benefits to the user who must manipulate and remove the inner pouch for disposable use in the toilet, while at the same time providing the user with the outer pouch Ensure that the step of peeling the pouch wall does not break the integrity of the inner pouch. An important aspect of the present invention is therefore to avoid such demolition risks by selecting the outer pouch thermoplastic material having a melting point higher than the melting temperature of the inner pouch thermoplastic material. It is to follow. Fibers of non-thermoplastic of the coating layer, so penetrate the thermoplastic film of the two pouches in the peripheral heat seal zone (region), and, since the thermoplastic material for the inner pouch has a lower melting point, the inner Fiber penetration along the peripheral heat seal into the pouch film is greater than into the outer pouch film, while the paper layer preferentially remains integral with the inner pouch, Ensure that the pouch wall is torn off.

The peripheral heat seal therefore simultaneously joins the multilayers in different ways, the peelability of the outer pouch wall from the fiber coating layer of the inner pouch, the retention of the fiber coating layer by the inner pouch, and the Achieve true heat sealing or fusion of the inner pouch walls along their peripheral edges.

  Other features and advantages of the present invention will become apparent as the specification is read.

The polyester or copolyester film material of the ostomy pouch or fecal incontinence pouch embodying the present invention is obtained by chemical synthesis rather than by a fermentation process. Polyester or copolyester films produced by the fermentation process are considered inadequate because they tend to be brittle and cannot be converted into thin and flexible films. Examples of synthetic biodegradable polyesters include aliphatic polyesters such as polycaprolactone (from "Tone" Dow Chemical), and aliphatic aromatic copolyesters having less than 20 mol% aromatic diacid moieties ("Estar Bio “From Eastman Chemical,“ Ecoflex ”from BASF). Synthetic biodegradable polyesters are pre-combined with biodegradable plasticizers and are suitable for thin film extrusion and are commercially available from Petroplast Vinora under the name “KF02B”.

Referring to FIGS. 1 and 2 of the drawings, numeral 10 generally refers to a waste collection pouch that can be flushed in the toilet, with proximal (rear or body) and distal (front) walls 11 and 12. And their peripheral edges are joined along the heat seal band 13. Although an ostomy pouch is shown for illustrative purposes, the present invention is applicable to other excrement collection pouches such as a fecal incontinence pouch. The terms “heat sealing” and “heat sealing” should also be understood herein to encompass other forms of thermoplastic fusion such as RF sealing. As shown, the proximal or side wall is provided with an opening 14 that communicates with the chamber 15 of the pouch.

Housing 10 encompasses also the table plate 17, which is soft, bending, has adhesive layers 18, which is an adhesive attachment to the skin surface around the wearer's mouth. The covering film 19 extends over the surface of the adhesive layer 18 of the front plate facing the pouch, and a stoma receiving opening 20 is provided in the front plate, and an opening in the pouch is provided. It is placed in line with the section 14. The attachment means 21 is schematically illustrated in FIG. 2 for joining the face plate and the pouch together. Such attachment means may take the form of a removable mechanical coupling or a separable adhesive seal, all of which are well known in the art. For the purposes of this embodiment of the invention, this focuses on the pouch 10 and the material from which it is formed (and the combination of the pouch with the outer pouch 10 '), but a stoma receiving opening. As long as there must be some means around 14 to secure the pouch wearer, the attachment means 21 is critical.

The pouch 10 has its walls 11 and 12 and is formed from an ultra-thin heat-sealable (including those that can be RF-sealable) liquid and gas-impermeable film 23, with a thin water collapse towards the outside. Bonded to the conductive coating layer 24. As previously mentioned, the film 23 is made of a biodegradable, thermoplastic, heat-sealable aliphatic polyester, aliphatic aromatic copolyester, or a blend thereof with a biodegradable plasticizer or this. It is made of a composition comprising a combination of such plasticizers. The soft, flexible, water-disintegrating coating layer 24 is composed of randomly oriented water-dispersible non-thermoplastic fibers, preferably cellulosic fibers, and has significant tensile strength when dried, but as already described, wet Sometimes lacking such strength. These two layers are bonded together mechanically, preferably by heat, so that, despite the ultrathinness of the film and the fibrous nature of the coating layer, significant fiber penetration into the film is possible. There is no penetration and no formation of pinholes through the film. While there is some very limited penetration of the fibers into the film, which can generate weak mechanical bonds between these layers, the penetration is very slight and the bonding force is very Since they are weak, these two layers can be easily peeled off (when dry), keeping each layer intact during and after such a peeling operation. More specifically, the mechanical attachment between the film and the coating layer must be sufficiently weak and is about 2-10 g / inch (0.02-0.02) when tested according to TAPPI test method UM502 (1991). Enabling separation by applying a 180 ° peel force of 0.1 Newton / inch), preferably about 3-6 g / inch (0.03-0.06 Newton / inch), all related to fiber retention by the film There is little or no trace . Under such circumstances, the peeled film is pinhole free, otherwise it can cause fluid (liquid) leakage from the laminated two-layer product during use.

A water-disintegrating coating layer made of non-thermoplastic water-dispersible fibers also plays an important role when the pouch acts as an inner pouch for a two-pouch type (pouch-in-pouch) article as shown in FIG. As shown there, the pouch 10 is placed in the chamber 15 'of the outer pouch 10'. The peripheral end portions of these two pouches may be joined by the heat seal portion 13 ′, and should be understood to include RF sealing here. The outer pouch 10 'is of conventional construction and comprises any of a variety of known thermoplastic film materials that have a sufficiently high heat seal or melting point and are impermeable to liquids, gases, and odors. The It also includes a proximal (rear or body) wall 11 'and a distal (front) wall 12' having a stoma receiving opening 14 'corresponding to the inner pouch. It is placed in line with the opening 14. These two pouches are sealed together around their respective openings, as is the case with heat seal 30. Therefore, excrement that passes through the product can enter only the internal pouch and cannot enter the space between the two pouches.

As provided from the aforementioned pending application, the disclosure thereof is incorporated herein, and the peripheral seal 13 'and seal 30 around the stoma openings 14 and 14' are peelable seals; The proximal and distal walls 11 'and 12' of the outer pouch are peeled away from the inner pouch without destroying the integrity of the peripheral seal that keeps the inner pouch walls together. Thus, the wall of the outer pouch may be peeled away to expose the biodegradable inner pouch 10 so that the latter is discarded along with its contents into the flush toilet. The outer pouch 10 ′ may or may not be biodegradable, but may then be placed into any suitable waste receptor.

As already noted, the fibrous and porous water-disintegrating layer 24 and the film layer 23 together form the wall of the inner pouch, leaving most of their surface areas bonded together weakly. In order not to damage them, they are separated by applying only a limited peeling force. However, it does not include the pouch peripheral heat seal strip 13 'shown in FIG. 3, where the film layers 23 of the inner pouch are securely heat sealed or fused together and the periphery of the fiber layer 24. It penetrates into the pores of the band and creates a tight bond with the fiber layer along the periphery of the inner pouch. The peripheral band of the fiber layer is also permeated by the heat-sealable material described above at least to some extent to form the walls 11 ′ and 12 ′ of the outer pouch 10 ′. However, the bond strength in the peripheral band between the fiber layer of the inner pouch and the film is much stronger than between the fiber layer forming the wall of the outer pouch and the thermoplastic film, This is because the melting point of the film material of the inner pouch is substantially lower than the melting point of the film material of the outer pouch. The result is that when the user peels off the wall of the outer pouch and exposes the inner pouch, the water-disintegrating non-heat-sealable tissue paper layer of the inner pouch remains as part of the inner pouch and the outer pouch Can't be stripped with the wall.

Differential scanning calorimetry (DSC) can be used to predict whether a combination of films is suitable for these inner and outer pouches to determine the melting point of the candidate film material. For example, a biodegradable plasticized polyester named KF02B available from Petroplast Vinora has been found to have a melting point of 65 ° C. by DSC. A known multilayer barrier film currently used commercially for ostomy pouches has a heat-sealable surface of poly (ethylene vinyl acetate) (EVA) and has a melting point of 88 ° C. by DSC. Because of this difference in melting point, it is possible to control the heat sealing conditions, and the tissue layer in the peripheral region of the pouch wall is the outer pouch film after the heat sealing operation (including RF sealing). Rather than exhibiting a stronger bond with the inner pouch film. As a result, the outer pouch can be peeled off without causing separation of the tissue layer from the inner pouch film. It is believed that a melting point difference of at least 10 ° C. is required to control layer separation.

  Such walls may be provided with a handle for gripping (not shown) to simplify the step of manually pulling the proximal and distal walls of the outer pouch 10 '. This is to jump out from the peripheral edge of the inner pouch 10.

The inner pouch wall must be impermeable to liquid and solid waste, and the biodegradable plasticized polyesters or copolyesters described herein perform this function well. Biodegradable polyesters or copolyesters are generally considered gas-impermeable, but nonetheless, without any protective measures they are intended for longer periods than very short use periods. Tolerable odor diffusion to the extent that it is inappropriate for excrement collection pouches. Plasticized biodegradable polyester or copolyester pouches are therefore useful in the conditions shown in FIGS. 1 and 2 for periods substantially shorter than one hour, for example, as pouches used with stomal implants In this case, the usage period may be less than 30 minutes. Despite the odor permeability of such biodegradable polyester materials, the pouches formed therefrom are well suited for long-term excrement collection, which is a two-pouch system as shown in FIG. Odor impermeability is now provided by a protective outer pouch. Any of a variety of well-known heat-sealable pouch materials that are odor impermeable are suitable for manufacturing the outer pouch 10 ', which is not intended to be washable in the toilet.

As described above, the covering layer 24 of the inner pouch 10 is made of a perforated material, which is supportive when dry but has low wet strength. This should also be soft and flexible. Tissue paper with a high percentage (preferably 100%) of cellulosic fibers is preferred, such as cellulosic tissue paper of the type available from Showano Specialty Papers, having a basis weight of 14 lb / ream. It is desirable that the binder be absent because it can interfere with or retard the rate of disintegration, but is a limited amount of binder that is non-thermoplastic and readily soluble in water. Or something like a starch that is disintegratable in water may be acceptable. The perforated tissue layer for each wall 11 and 12 provides reinforcement, softness, and noise reduction for the thin thermoplastic film of the inner pouch when such a layer is dry, It is believed to contribute to the water washability of the film when the pouch is separated from the outer pouch and discarded into a flush toilet.

As believed apparent from the foregoing, a method of manufacturing a pouch in the pouch body waste collection article embodying the present invention, said having a substantially lower melting point than the melting point of the thermoplastic material for the film of the outer pouch Selecting a thermoplastic material for the film of the inner pouch, and then joining the peripheral portions of the walls of the two pouches by simultaneously applying pressure and heat, the film material of the inner pouch being melted, More than the film material of the outer pouch so that it penetrates into the pores of the fiber coating layer. At the same time, the opposing or inwardly facing film layers of the inner pouch become fused together, creating a true heat seal or fusion between the walls of the inner pouch. When the peel force is subsequently applied, the wall of the outer pouch does not cause separation of the perforated coating layer and film layer of the inner pouch, and does not destroy the integration of the inner pouch. It may be peeled off the wall. The inner pouch exposed to the outside and its contents are then discarded (washed) into the flush toilet.

From FIG. 3, the proximal wall of the outer pouch may similarly be joined to the perforated covering layer of the proximal wall of the inner pouch around the stoma receiving opening, When the proximal wall is peeled from the proximal wall of the inner pouch, i.e., when the inner pouch is removed from the hollow outer pouch , a clean separation is possible so that the perforated covering layer can be washed again. It will be appreciated that it occurs while held as part of the inner pouch .

  Other features and advantages of the present invention will become apparent from the following examples.

Example 1
Two methods are particularly suitable for tissue / film laminate production of pouch 10:
(1) Extrusion coating on tissue paper (1 step); and (2) Laminating film on tissue paper after film extrusion (2 steps)
Extrusion coating may be done using Davis Standard extrusion coating line. Tissue paper is used as the substrate and the biodegradable polyester is extruded directly onto the tissue in a single step process. Using a two-step process, the film is first extruded using a blown (blown) film extrusion line, then while using the Faustel laminator may be laminated to the tissue paper. Lamination is ideally done by heat without the use of an adhesive layer between the tissue and the film. Both processes (1) and (2) give a high quality laminate without undulations or other defects. A two step process is preferred because it gives better control of adhesion and penetration between the tissue and the film. Temperatures in the range of 165 ° F. to 220 ° F. and nip pressures in the range of 40-50 psi are typically used for lamination. It is from such a laminate that the wall of the pouch can then be stamped .

Example 2
A blend of polycaprolactone (from "Tone 787" Dow Chemical) and triethyl citrate (from "Citroflex 2" Morflex Corp.) was blended and pelletized using a twin screw compounding extruder. These blended pellets were converted to film using a cast film line equipped with a 1.25 inch extruder having an L / D ratio of 24: 1. The film was extruded with a mold temperature of 320 ° F. The following table illustrates the effect of plasticizer content on tensile modulus and noise at a film thickness of 0.6 mil (15.2 microns).

The data in this table shows that increasing plasticizer content decreases the tension coefficient of the polycaprolactone film (ie increases its flexibility) and reduces the noise of the film. However, at 20% TEC, film blocking (when adjacent film surfaces stick together) becomes a problem. A plasticizer concentration of 10% is preferred because it provides adequate flexibility and quietness without blocking .

Example 3
An ostomy pouch suitable for use as an inner pouch of a two-pouch article is constructed using 0.2-0.6 mil (5.1-15.2 microns) plasticized polycaprolactone thin film prepared according to Example 2. It was done. The pouch was found to flow well (washed) even with a low volume toilet system (1.6 gal).

Example 4
Another biodegradable film suitable for producing a water washable ostomy pouch has a thickness in the range of 0.4 to 0.8 mil (10.2-20.3 microns) ; Plasticized biodegradable synthetic polyester film identified as “KF02B” (manufactured by Petroplast Vinora, Switzerland) to 100% cellulosic tissue (product code number 3040, manufactured by Showano Specialty Papers) having a basis weight of 14 lb / ream And formed by heat lamination.

Example 5
This example illustrates the improved biodegradability of a polyester film formulated with a biodegradable plasticizer.

Biodegradability is:
(1) Polycaprolactone plasticized using triethyl citrate (“Tone787” PCL, manufactured by Dow Chemical) (PCL / TEC weight ratio 90/10)
(2) Unplasticized PCL ("Tone787" from Dow Chemical) and (3) Water-washable commercial inner pouch product ("Impact" water-washable bag, Welled Medical Limited, Crawley, England) A film sample consisting of a control sample of a polyvinyl alcohol film was tested. These films were exposed to sewage sludge aerobic bacteria according to ASTM test method D-5209. Its average weight reduction is:
(1) 64.0% with respect to plasticized PCL;
(2) 26.1% for unplasticized PCL; and (3) 12.4% for the control sample.

  Commercial PVOH inner pouch material where plasticized PLC thus exhibits greater weight loss than unplasticized PLC due to biodegradability and is claimed by their manufacturers to be biodegradable It was much larger than that.

Example 6
This example illustrates the conditions required to laminate tissue paper into a biodegradable film (film) without causing pinhole formation during the process.

Petroplast Vinora made of biodegradable film (KF02B, 20 microns thick) and Showano Specialty Papers made of cellulosic tissue (product code number 3040, basis weight 14 lb / ream) is, while using the Faustel laminator are laminated by heat It was. The nip pressure was 50 psi, the temperature was 220 ° F., and the line speed was 35-40 ft / min. This laminate exhibited a 180 ° peel strength in the range of 3-6 g / inch.

The laminate was tested for pinholes as follows:
The laminate sample was placed on a flat surface with the film side up. A solution of blue dye was applied on the film surface. After 5 minutes, the film was turned over and the tissue side was examined. If there is a pinhole, the dye solution will penetrate into the tissue and produce visible blue spots. The test showed no pinhole traces at all. As the laminator line speed was reduced or the nip pressure increased, the peel strength increased progressively and traces of remaining fibers embedded in the film and pinholes appeared in this dye soak test. .

Example 7
This example illustrates the resistance to deformation imparted by the lamination of tissue to a biodegradable thin film.

  The load at 1% and 2% strain was measured according to ASTM D882-02 for the film-tissue laminate of Example 6 and for the film of Example 6 without tissue. The results are illustrated in the following table.

Example 8
This example illustrates the difference in heat sealability of films suitable for use in "pouch in pouch" articles embodying the present invention. A suitable material for the inner pouch wall is a 20 micron thick heat-sealable biodegradable film of plasticized polyester (KBF02B) from Petroplast Vinora. A suitable thermoplastic material for the outer pouch wall is a commercially available multilayer barrier film for ostomy pouches having a heat sealable EVA surface layer. In each test, two layers of the same film material were heated together, with a sealing element maintained at a sealing pressure of 4 bar, at different selected temperatures, spaced 1.2 seconds apart. Attempts were made to be sealed or heat sealed together. After cooling, the seal strength (anyway) is tested by the two-layer pull peeled score and by hand, or was attempted to peel off. The results of such a test are given below.

The term “peeling” as used in this chart means that these two layers can be separated or peeled off, even though they have limited adhesion to each other, so that each layer is not impaired. It means that it was kept in. By “sufficient seal” is meant that the layers were fused or melted together and could not be separated significantly. This chart, KF02B film is intended to clarify be had a significantly lower heat sealing temperature than the film of Controls. This is consistent with the DSC melting point previously discussed.

  Although embodiments of the present invention have been disclosed in considerable detail for purposes of illustration, many such details may be changed by one skilled in the art without departing from the spirit and scope of the present invention. It is understood as a thing.

FIG. 1 is a top view of a feces collection pouch that can be washed with water, embodying the present invention. FIG. 2 is a schematic vertical cross-sectional view taken along line 2-2 of FIG. FIG. 3 is a cross-sectional view similar to FIG.

Claims (19)

A waste collection biodegradable pouch particularly suitable for disposable in flush toilets:
It has a pair of walls, which are stapled along their peripheral edges to define a body waste receiving put chamber therebetween;
One of the side walls but has excrement receiving opening, through which communication with the chamber;
External mounting means are provided for attachment of the pouch to the wearer around the opening;
The pouch wall
(A) a non-permeable and a layer of heat-sealable film having a thickness of about 40 microns with respect to waste, and (b) 1 surface is continuously attached to it, the water disintegration of the water-dispersible fibers Cut from a laminate composed of a biodegradable coating layer,
A composition comprising a biodegradable aliphatic polyester, a biodegradable aliphatic aromatic copolyester, or a blend thereof, wherein the membrane is plasticized with one or more biodegradable plasticizers;
The membrane and the coating layer are weakly bonded, and the weak bond can be separated from the coating layer without damaging both layers by applying a 180 ° peeling force in the range of about 2 to 10 g / inch. That's a pouch. The pouch of claim 1 , wherein the membrane and the covering layer are separable by applying a 180 ° peel force in the range of about 3-6 g / inch. The pouch according to claim 1 or 2 , wherein the plasticizer is selected from the group consisting of triethyl citrate, vegetable oil, and starch, and combinations thereof. The composition comprises about 70% to 95% by weight of the biodegradable aliphatic polyester or aliphatic aromatic copolyester and about 5% to 30% by weight of the biodegradable plasticizer (s). The pouch according to any one of claims 1 to 3 , comprising a blend with).   About 75% to 93% by weight of the biodegradable aliphatic polyester or aliphatic aromatic copolyester and about 7% to 25% by weight of one or more biodegradable plasticizers. 5. A pouch according to claim 4, comprising a blend with (one or more). The composition comprises a blend of about 90% by weight of the biodegradable aliphatic polyester or aliphatic aromatic copolyester and about 10% by weight of the biodegradable plasticizer (s). The pouch according to claim 5 . The pouch according to any one of claims 1 to 6 , wherein the aliphatic polyester or the aliphatic part of the copolyester includes a polymer formed by ring-opening polymerization of a lactone. Any of the aliphatic aromatic copolymer, glycols include condensation products of a combination of an aliphatic diacid and an aromatic diacid, aromatic diacid is less than 20 mol%, of claim 1-7 The pouch according to claim 1. It said membrane has a thickness in the range of about 10 to 35 microns, pouch according to any one of claims 1-8. It said membrane has a thickness in the range of about 15 to 30 microns, pouch according to any one of claims 1-9. The membrane is formed in a cylindrical shape and attached to a test apparatus, where one end is kept fixed and the other end is rotated by 15 ° at 70 cycles / min around the axis of the cylindrical body. when it is, having about 51dB less volume in octave bands of 8 kHz, the pouch according to any one of claims 1-10. It said membrane, when tested according to ASTM D882-02, at 2% elongation has a secant coefficient of less than about 45,000 psi, pouch according to any one of claims 1 to 11. The pouch according to any one of claims 1 to 12 , wherein the film of biodegradable aliphatic polyester or copolyester is a single layer. The pouch according to any one of claims 1 to 13 , wherein the fibers of the water-disintegrating coating layer are cellulosic. The pouch according to any one of claims 1 to 14 , wherein the coating layer includes a tissue paper formed from 100% cellulosic fibers. The coating layer, the film is heat bonded to, a pouch according to any one of claims 1 to 15. 17. The pouch according to any one of claims 1 to 16, wherein the pouch is an inner pouch for a pouch excrement collection article in a pouch, and the pouch excrement collection article in the pouch comprises:
An outer pouch formed of a liquid, gas, and odor impermeable heat-sealable polymer membrane having proximal and distal sidewalls and defining a chamber;
Proximal wall of the inner and outer pouch has a penetrating excrement receiving opening in a straight line;
Mounting means for mounting in the area surrounding the opening of the proximal wall of the inner and outer pouch, the skin surface around the excrement outlet of the patient;
The heat-sealable film of the inner pouch having a melting point lower than the melting point of the heat-sealable film of the outer pouch;
Including outer and inner pouch walls having a peripheral edge portion sealed together with a peripheral edge portion of the covering layer that is more tightly bonded to the inner pouch membrane material than the outer pouch membrane material The pouch according to any one of claims 1 to 16 . The pouch of claim 17, wherein the outer pouch film has a melting point that is at least 10 ° C. higher than the melting point of the heat-sealable inner pouch film. The pouch according to any one of claims 1 to 18, wherein the cellulose fiber coating layer includes tissue paper.