Hygienic bag

Abstract

Hygienic bag Bag comprising: - a waterproof envelope provided with an opening, the envelope being formed from a plastic film comprising more than 30% recycled plastic, - optionally, at least one tie for closing said opening, the closing tie being in particular mounted to slide in a hem of the envelope so that extraction of said closing tie from said hem reduces said opening. Figure: Figure 1

Description

Title of the invention: Hygienic bag Technical field

[0001] The invention relates to a hygienic bag comprising recycled plastic intended for the recovery of waste, in particular liquid waste, produced by a patient, in particular in hospitals. The invention also relates to a method for manufacturing such a hygienic bag. The invention finally relates to a strip of such hygienic bags and an assembly comprising such hygienic bags, as well as packaging for said hygienic bags. Prior art

[0002] In hospitals, it may be necessary to collect waste produced by certain patients (urine, excrement, vomit) because these patients cannot move to the toilet, or for analysis purposes. For this purpose, patients can use hygienic bags, which can be placed, as needed, on a support, such as a bedpan, a commode bucket or a toilet. Such a hygienic bag is for example described in patent FR 3 081 103.

[0003] Known hygienic bags are mainly made of virgin plastic. In an effort to be more environmentally friendly, manufacturers have conducted research to reduce the proportion of virgin plastic in these bags. This process is nevertheless complex. Replacing part of the virgin plastic with organic materials, such as corn starch, has thus proven impossible due, on the one hand, to the excessively rapid degradation of organic materials, which limits the lifespan of hygienic bags, and, on the other hand, to the poor mechanical performance of the hygienic bags resulting from this combination, which are, for example, more sensitive to friction or nail marks, making them susceptible to holes. The guarantee of a hermetic bag is indeed fundamental in the medical context to prevent the proliferation of bacteria from waste.These organic materials finally have a limited supply, making their use for mass production difficult.

[0004] It has been proposed to replace a small part of the virgin plastic used in a bag with post-industrial recycled plastic, also called PIR plastic, from "Post Industrial Recycling" in English. PIR plastic is a plastic manufactured using recycled plastic resin produced from virgin plastic production offcuts in factories. However, it has only been possible to use a small part of PIR recycled plastic in the bags, the rest being virgin plastic.

[0005] Although functional from a mechanical point of view, this option remains limited from an environmental point of view. In the current state of the art, however, increasing the proportion of recycled plastic in hygienic bags is difficult. Indeed, beyond a low proportion of recycled plastic within a bag, the recycled material used to produce the resin necessary for the manufacture of the bags is considered unstable because it is difficult to guarantee traceability and repeatability of the plastic waste composing it. Furthermore, increasing the proportion of recycled plastic makes it difficult to maintain the white color of the product, essential for medical use because it is synonymous with hygiene and sterility.

[0006] There is therefore a need to benefit from a hygienic bag with good mechanical performance for use in a medical setting, and which contains sufficient recycled plastic. Summary of the invention

[0007] The invention aims to meet this need and thus has as its subject a hygienic bag for medical use intended for the recovery of waste produced by a patient, said hygienic bag comprising:

[0008] - a sealed envelope provided with an opening, the envelope being formed from a plastic film,

[0009] - optionally, at least one link for closing said opening, the link of closure being in particular slidably mounted in a hem of the envelope so that an extraction of said closure link from said hem reduces said opening,

[0010] characterized in that the plastic film of the envelope comprises more than 30% recycled plastic.

[0011] By "medical use" we mean that the hygienic bag is a medical device, which can come into contact with a patient's skin. It must therefore comply with the Medical Device Regulations (MDR) and the ISO 13485 standard.

[0012] The waste produced by the patient may be at least partly liquid and / or at least partly solid. It may be urine, excrement, and / or vomit, in particular.

[0013] The hygienic bag may be a bucket protector and / or a bedpan protector. The hygienic bag may alternatively be a toilet protector. Alternatively, it may be a urinal bag or a vomit bag.

[0014] The envelope of the hygienic bag can contain a volume of waste of between 200 and 1000 mL, or even between 400 and 800 mL, for example 450 mL or 500 mL or even 700 mL.

[0015] The hygienic bag may be an antimicrobial bag.

[0016] The envelope may comprise first and second identical sheets, superimposed on each other and fixed to each other along right and left side edges and a bottom edge.

[0017] The envelope may be without gusset. The envelope may be without gripping straps.

[0018] The plastic film of the envelope may have a thickness of less than 40 microns, in particular between 30 and 36 microns, for example approximately 32 microns. Reducing the thickness of the plastic film below the “standard” thickness of 40 microns makes it possible to reduce the use of plastic material.

[0019] The plastic film may be polyethylene (PE).

[0020] In one embodiment, the hygienic bag may comprise at least one tie for closing said opening, the closing tie being in particular slidably mounted in a hem of the envelope so that extraction of said closing tie from said hem reduces said opening.

[0021] The closure link(s) may be ribbons. Each ribbon may have a width greater than 10 mm, better still greater than 15 mm, even better greater than 20 mm, preferably approximately 25 mm.

[0022] In an embodiment where the hygienic bag is a urinal bag, the closing tie(s) may be cords. Each cord may have a width greater than 2 mm, better still greater than 5 mm, even better greater than 10 mm, preferably greater than 15 mm.

[0023] The closing link(s) may be plastic, in particular polyethylene

[0024] The recycled plastic may be manufactured from a recycled plastic resin of a sufficiently high grade so that the melt flow index of the resin is greater than or equal to 1.40 g / 10 min, better still greater than or equal to 1.50 g / 10 min, even better still greater than or equal to 1.60 g / 10 min and / or so that the density of the resin is greater than 0.9 g / cm3.

[0025] The recycled plastic may be made from a recycled plastic resin of a sufficiently high grade so that the melt flow index of the resin is greater than or equal to 1.40 g / 10 min, better greater than or equal to 1.50 g / 10 min, even better greater than or equal to 1.60 g / 10 min. The melt flow index may be measured according to the ASTMD1238 standard.

[0026] Recycled plastic may be made from a recycled plastic resin of a sufficiently high grade that the density of the resin is greater than 0.9g / cm3. The density may be measured according to ASTMD792.

[0027] The NAT% PLUS grade is a grade used by the company CY Plastique, on a scale including in particular, from the lowest grade to the highest grade, the grades following: NI, NIA, N1B, N2, N3, AB, AA, AAA, NAT, NAT%, NAT% PLUS. This NAT% PLUS grade corresponds to a resin with a density of approximately 0.9169g / cm3 and a melt flow index of approximately 1.60g / 10 min. The recycled plastic resin used may be of a grade higher than or equal to the NAT% PLUS grade.

[0028] The grade of a resin is an indicator of its quality, depending on its level of contamination by external elements such as soil, dust, oil, chemicals or fertilizers for example. The quality of the resin is thus intrinsically linked to the plastic waste selected to produce it. A high-quality resin results from a high sorting process and a selection of plastic waste with little contamination to produce it. Resins of different grades can be distinguished by their color, reflecting their level of contamination. High-grade resins are thus lighter than low-grade resins.

[0029] The grade of a resin has an impact on the level of impurities produced during the formation of the plastic film as well as on its mechanical performance, in particular its resistance to perforations. Indeed, the more impurities the resin contains and the lower its grade, the higher the risk of holes forming in the plastic film, in particular during the plastic extrusion process.

[0030] By choosing a high-grade resin to produce the plastic film, it is possible to increase the percentage of recycled plastic in the hygienic bag while retaining the mechanical performance necessary for its use in a medical setting.

[0031] The plastic film of the envelope may comprise more than 30% post-consumer recycled (PCR) plastic, better at least 40% PCR plastic, better at least 50% PCR plastic, even better at least 60% PCR plastic, even better at least 70% PCR plastic, even better at least 80% PCR plastic, even better at least 90% PCR plastic, in particular 100% PCR plastic.

[0032] Post-consumer recycled plastic, known as PCR plastic, for “Post Consumer Recycled” in English, is manufactured using a recycled plastic resin produced from plastic waste used daily by users, such as plastic bags, supermarket packaging, pallet films, this list not being exhaustive.

[0033] The volume of PCR plastic available is much greater than the volume of post-industrial recycled (PIR) plastic available. Furthermore, for an industrial group, opting for PCR plastic contributes more significantly to helping the group reduce its carbon footprint, reduce its impact on landfills and achieve its overall sustainability objectives.

[0034] The plastic film of the envelope may comprise more than 30% post-industrial recycled (PIR) plastic, better at least 40% PIR plastic, better at least 50% PIR plastic, even better at least 60% PIR plastic, even better at least 70% PIR plastic, even better at least 80% PIR plastic, even better at least 90% PIR plastic, especially 100% PIR plastic.

[0035] Post-industrial recycled plastic is a plastic that is considered relatively clean and uniform, and is unlikely to contain impurities because it has not been contaminated by outdoor use. Post-industrial recycled plastic is easily traceable and likely to meet the requirements of MDR regulations and ISO 13485.

[0036] The plastic film of the envelope may comprise strictly less than 100% of post-industrial recycled plastic (PIR), or even less than 90%, better still less than 80%, or even less than 70%, even better still less than 60%, or even less than 50%, in particular less than 40%, or even less than 30% of post-industrial recycled plastic (PIR), better still less than 20%, or even less than 10%, in particular 0% of PIR plastic. The plastic film of the envelope may be free of post-industrial recycled plastic (PIR).

[0037] The plastic film may comprise at least 30% low density polyethylene (LDPE), better still at least 50%, or even at least 70%, in particular 100% low density polyethylene.

[0038] Low density polyethylene, known as LDPE, for “low density polyethylene” in English, may be preferred to high density polyethylene (HDPE) or linear low density polyethylene (LLDPE).

[0039] The plastic film may in particular comprise less than 30% high-density polyethylene, better still less than 20%, or even less than 10%, in particular 0% high-density polyethylene (HDPE). The plastic film of the envelope may be free of high-density polyethylene (HDPE). LDPE is less brittle than HDPE. It creases less easily and is less noisy when touched, hence its advantage for use in a medical setting.

[0040] The plastic film may comprise less than 30% linear low density polyethylene (LLPDE), better still less than 20%, or even less than 10%, in particular 0% linear low density polyethylene. The plastic film of the envelope may be free of linear low density polyethylene (LLPDE). Unlike LLDPE, LDPE does not require the addition of an additive to make it more sticky during its manufacture. By using LDPE, there is therefore less risk of observing glue marks in the produced film, which can make the envelope of the bag difficult to open and cause the closure tie(s) to slide poorly in the hem of the envelope.

[0041] The recycled plastic resin may be configured so that the plastic film is white in color when viewed under white light and / or has a white appearance. shiny. Plastic resin can be produced from light-colored waste, in particular.

[0042] By “white light” is meant light having a continuous spectrum covering all the wavelengths of the visible range.

[0043] By "white color" is meant the color associated in the RGB code with the triplets (r, g, b) such as r, g, b > 245, or even r, g, b > 250, better r, g, b = 255. The difference between two components of the triplet may in particular be less than 10, or even 5, better 2. The white color may be characterized by a visual test based on pantones 11-0601, 11-4800 TPX, or 11-4001 TCX, for example.

[0044] As previously mentioned, the white color is synonymous with hygiene and sterility in the medical context. However, it makes it much easier to see any impurities present in the plastic film. The shiny appearance is also appreciated in a medical context because it is associated with the notion of hygiene.

[0045] The plastic film may be manufactured using a recycled plastic resin of a sufficiently high grade that the plastic film is white in color and / or has a glossy appearance.

[0046] The use of a resin of such a grade also helps to reduce the impurities present in the plastic film.

[0047] Recycled plastic can be manufactured using recycled plastic resin produced from plastic waste, said plastic waste being highly traceable, in particular coming from a single supplier.

[0048] By "high traceability" is meant that the supplier(s) of the plastic waste at the base of the resin can be easily identified and that the plastic waste used can be tracked in its recycling process. The supplier(s) of plastic waste may in particular comply with the EN 15343:2007 standard on the traceability of recycled plastics.

[0049] The choice of a resin produced from highly traceable plastic waste ensures stability and repeatability of the resin manufacturing process, thus making the recycled material more “stable”.

[0050] A foreign body / plastic ratio in the plastic waste used to produce the resin may be less than 10 / 90, better less than 3 / 97, even better less than 1 / 99.

[0051] By "foreign body" we mean any element which is not plastic, but which can pass through the first sorting of plastic waste carried out. A foreign body can be, for example, a printing label stuck on a plastic film.

[0052] This ratio provides information on the proportion of foreign bodies that a batch of waste from a supplier contains. The lower this proportion, the more efficient the sorting of The easier it will be to recycle waste, the less "contaminated" the waste will be and therefore the higher the grade of resin produced from it will be.

[0053] Recycled plastic can be manufactured using recycled plastic resin, the recycled plastic resin being produced from the same type of plastic waste.

[0054] Recycled plastic resin can, for example, be produced from plastic bags from a given supermarket.

[0055] This identification of a supplier and a type of plastic waste contributes to the traceability of the recycled plastic resin. This makes it possible to recommend a resin of the same quality, produced with the same plastic sources, thereby facilitating the stability and repeatability of the resin manufacturing process.

[0056] Recycled plastic resin can be produced from a single plastic waste, particularly low density polyethylene.

[0057] Recycled plastic resin can be produced from the inner film of jumbo bags, which ensures their watertightness. This product is advantageous because it is uncontaminated virgin plastic, and it also has a white color when observed in white light.

[0058] Recycled plastic resin can be produced from plastic waste other than plastic waste from agriculture. Plastic waste from agriculture is too contaminated by external elements, such as soil, dust, oil, chemicals or fertilizers for example, for a resin from this waste to be compatible with medical use, in particular to comply with the MDR regulation. Plastic waste from agriculture results in plastic resins whose grade cannot exceed the NIA grade, using the grades defined by the company CY Plastique listed above. Waste from the fashion industry and / or the logistics industry is the source of resins with grades between AB and NAT%PLUS.

[0059] PCR plastic can be manufactured using recycled plastic resin produced from plastic waste from, for example, logistics circuits or hypermarkets.

[0060] The closure link(s) may comprise at least 30% PIR plastic, better still at least 50%, or even at least 70%, in particular 100% PIR plastic, and / or at least 30% high-density polyethylene (HDPE), better still at least 50%, or even at least 70%, in particular 100% HDPE.

[0061] The plastic film may comprise at least one additive, which may be chosen from the following list: slip agents, antimicrobial agents, this list not being limiting. The plastic may comprise between 1 and 2% of additive. The use of slip agents in polyethylene films makes it possible to reduce the Coefficient of Friction (COF) while maintaining the optical properties of brightness, transparency and clarity.

[0062] The plastic film may comprise a sliding agent, preferably between 1 and 3% sliding agent, better still between 1.5 and 2.5% sliding agent, for example approximately 2% sliding agent. The sliding agent may be the sliding agent Zip-33E, supplied by the company JUSU.

[0063] The closure link(s) may comprise a sliding agent, preferably between 0.5 and 1.5% sliding agent, better still between 0.8 and 1.2% sliding agent, for example approximately 1% sliding agent. The sliding agent may be the sliding agent Zip-33E, supplied by the company JUSU.

[0064] Recycled plastic is indeed less slippery than virgin plastic and thus a bag comprising a significant proportion of recycled plastic in both the envelope film and the closure ties may present difficulties in sliding the ties. The use of sliding agents in the plastic film of the envelope and / or in the closure ties helps to reduce this problem.

[0065] The recycled plastic may be manufactured using a recycled plastic resin produced from plastic waste, the plastic waste forming the basis of the recycled plastic resin being heated during the production of the resin to a temperature above 200°C, more preferably above 220°C, in particular about 230°C.

[0066] The high heating temperature of plastic waste makes it possible to eliminate at least some, if not all, of the possible pathogens.

[0067] The invention also relates to a method for manufacturing a recycled plastic resin comprising at least one of the following steps, or even all of the following steps:

[0068] a) select at least one supplier, in particular a single supplier, of plastic waste which does not come from agriculture,

[0069] b) identifying a type of plastic waste to be selected to produce the resin, preferably a type of plastic waste that is not very contaminated, in particular transparent or white in color, for example the internal film of “jumbo bags”,

[0070] c) carrying out one or more, in particular at least two, or even at least three, better still at least four, or even five, manual and / or automatic sorting operations of the plastic waste,

[0071] d) heating the sorted plastic waste to a temperature above 200°C, better still above 220°C, in particular around 230°C.

[0072] The process may include a step e) in which post-production checks are carried out to verify the quality of the recycled resin produced. These post-production tests may be based on the ASTMD1238 and ASTMD792 standards.

[0073] The method may include a step f) in which the traceability of the plastic resin produced is ensured by associating a batch number with each batch produced.

[0074] The supplier(s) of plastic waste may have certificates enabling them to obtain from this plastic waste a plastic resin certified by independent bodies.

[0075] Recycled plastic resin can be manufactured in a factory separating resin production lines according to their grade.

[0076] The recycled plastic resin can be manufactured in a factory that does not produce low-grade resins, particularly those produced from plastic waste from agriculture.

[0077] The separation of production lines or even resin production plants makes it possible to avoid contamination of high-grade resins by low-grade resins, for example from agricultural plastic waste.

[0078] Employees of the recycled plastic resin manufacturing plant can be trained to ensure their ability to sort plastic waste and categorize it according to its level of contamination.

[0079] The plastic waste at the base of the recycled plastic resin used may result from a sorting process comprising several, in particular at least two, or even at least three, better still at least four, or even five, manual sorts.

[0080] Each production line can be completely cleaned each time the plastic waste supplier and / or type of plastic waste is changed.

[0081] The manufacturer of the recycled plastic resin may have EUCERPLAST certification. The EUCERPLAST certificate is based on the EN15343 standard relating to the traceability of materials used to produce the recycled material. The certificate may stipulate that the supplier has the highest level of traceability and therefore sorting, namely level 1.

[0082] The manufacturer of the recycled plastic resin may have GRS certification. This certification guarantees recycling that meets environmental and social criteria.

[0083] These certifications allow compliance with certain regulatory requirements and are a guarantee of quality, in particular to guarantee stability in the quality of the resin produced.

[0084] The resin manufacturer may implement at least one test evaluating the biocompatibility of the recycled plastic resin.

[0085] The manufacturer can implement a chemical characterization test based on the ISO 10993-18 standard. This test makes it possible to know if there are substances, in particular carcinogenic, allergenic, irritant, mutagenic, in the resin.

[0086] The bag manufacturer can implement a cytotoxicity test based on ISO 10993-5-2009. It can also carry out a sensitization test to ensure that the product does not present a risk when in contact with the patient.

[0087] The plastic film of the envelope can be produced by means of a film blowing machine provided with a filter with a mesh size of between 85 and 120 mesh, in particular about 100 mesh. The filter can be changed regularly, in particular every 24 hours, better every 12 hours.

[0088] The use of a filter with a mesh size between 85 and 120 mesh which is changed very regularly makes it possible to further reduce the level of impurities in the plastic film.

[0089] The sanitary bag may contain an absorbent pad.

[0090] The absorbent pad can gel bodily fluids (vomit, urine, excreta) in order to limit their spread. The absorbent pad can be made from a mixture of cotton wool and a powder made from a super absorbent polymer.

[0091] The absorbent pad can be fixed to an inner face of said envelope, in particular by means of a reversible and, preferably, reusable glue.

[0092] The envelope may comprise first and second identical sheets, superimposed on each other and fixed to each other along right and left side edges and a bottom edge, the absorbent pad being fixed on only one of said first and second sheets.

[0093] According to another of its aspects, the invention also relates to a strip of hygienic bags as defined above, each hygienic bag being fixed by at least one lateral edge to an adjacent hygienic bag, said hygienic bags being in particular separated from each other by at least one line of weakness extending along said lateral edge(s). The strip may comprise between 10 and 30 hygienic bags, in particular 20.

[0094] According to another of its aspects, the invention relates to an assembly comprising:

[0095] - a plurality of hygienic bags as defined previously, in particular in the form of a strip as defined above, and

[0096] - a packaging in which said hygienic bags are housed.

[0097] The packaging may be a box, for example a cardboard box. Preferably, the packaging is a 100% recycled cardboard box.

[0098] The packaging can be recyclable. It can be certified FSC "Chain of Custody", from "Forest Stewardship Council" in English. This certificate ensures the traceability of FSC materials at each stage of the production process, from the forest to the finished product, including all the successive stages of treatment, transformation, manufacturing and distribution.

[0099] According to another of its aspects, the invention finally relates to a method of manufacturing a hygienic bag as previously defined, comprising the following steps:

[0100] a) confirming a grade of a supplied recycled plastic resin, in particular low density polyethylene,

[0101] b) preparing a mixture from the recycled plastic resin and optionally a masterbatch slip agent and / or an anti-humidity agent,

[0102] c) filling a film blowing machine with said mixture, the machine having in particular been cleaned beforehand,

[0103] d) placing a filter, in particular a new filter, with a mesh size of between 85 and 120 mesh, in particular around 100 mesh, in the blowing machine, the filter being intended in particular to be replaced regularly, in particular at least every 24 hours, or even every 12 hours,

[0104] e) blowing a film with the blowing machine.

[0105] The respective proportions of the elements of the mixture of step b) can be optimized to obtain a white and shiny plastic film. The masterbatch can include other additives.

[0106] As explained previously, the use of slip agents in polyethylene films makes it possible to reduce the Coefficient of Friction (COF) while retaining the optical properties of gloss, transparency and clarity.

[0107] Recycled plastic resin contains more moisture than non-recycled resin due to the numerous washes carried out during its production. This moisture can lead to the formation of bubbles during extrusion of the plastic film, which the presence of an anti-humidity agent in the mixture of step b) helps to avoid.

[0108] Using a filter with a mesh size between 85 and 120 mesh, especially around 100 mesh, and changing it regularly, for example every 24 hours or every 12 hours, helps reduce impurities in the bag, as explained above.

[0109] The manufacturing process may include a step f) where the film is left to stand in the open air for at least 24 hours. Leaving the film to stand in the open air tends to reduce the unpleasant odor that may accompany the production of the film. This also helps to make the film less sticky.

[0110] The manufacturing method may include a step following step e) or step f) previously defined, where at least one piece of information is printed on the film. The piece(s) of information printed on the film may include, among other things, the brand name, the brand logo, the product name, information on the volume of waste that can be contained in the bag, a mention on the percentage of recycled plastic. Printing parameters may be varied at this step to obtain quality printing.

[0111] The manufacturing method may include a step of assembling the bag from the film, preferably following a step of printing at least one piece of information on the film.

[0112] The manufacturing method may include a step where an absorbent pad is inserted into the bag.

[0113] The invention also relates, according to another of its aspects, to a plastic film comprising more than 30% recycled plastic.

[0114] The plastic film may have all or part of the characteristics previously described.

[0115] The plastic film may be translucent.

[0116] The plastic film may be white in color when viewed under light. white.

[0117] The plastic film may be transparent.

[0118] The plastic film may have a glossy appearance.

[0119] According to another of its aspects, the invention also relates to a bag comprising:

[0120] - a sealed envelope provided with an opening, the envelope being formed from a plastic film, the film being as described above,

[0121] - optionally, at least one link for closing said opening, the link of closure being in particular slidably mounted in a hem of the envelope so that extraction of said closure link from said hem reduces said opening.

[0122] The bag may have all or part of the characteristics previously described.

[0123] The bag is not necessarily a hygienic bag.

[0124] The bag may be a general purpose bag, requiring no particular degree of hygiene, sterility or other.

[0125] The bag may be a bag for medical use, in particular sterilized.

[0126] The bag may be a hygienic bag, in particular for medical use, in particular sterilized.

[0127] The bag may be adapted for the safe storage and / or transport of food.

[0128] The bag can be for domestic or industrial use. Brief description of the drawings

[0129] The invention may be better understood by reading the description which follows, non-limiting examples of its implementation, and by examining the attached drawing, in which:

[0130] [Fig-1] [Fig.l] represents a hygienic bag according to the invention.

[0131] [Fig.2] [Fig.2] illustrates the main stages of manufacturing a hygienic bag according to the invention. Detailed description

[0132] [Fig.l] illustrates a single-use hygienic bag 10 intended to collect waste, in particular at least partly liquid, from a patient. The hygienic bag 10 is a bucket protector and / or a bedpan protector. It can contain a volume of waste of, for example, 450 mL.

[0133] The hygienic bag 10 comprises an envelope 12 provided with an opening 20 and first and second closing ties 14i and 142. The envelope 12, generally rectangular in shape when the bag is flat, comprises first and second sheets 16i and 162, respectively, of the same dimensions, superimposed and fixed to each other, in a sealed manner, along a right lateral edge 18d, a left lateral edge 18g and a bottom edge 18f connecting the lower ends of the right and left lateral edges. The first and second sheets may result from folding a sheet along the bottom edge 18f. The sealing of the right and left lateral edges may be obtained for example by welding. The envelope is devoid of a gusset. It is also devoid of gripping straps.

[0134] The opening 20 of the hygienic bag is defined by an opening edge 18o consisting of the first and second free edges 22i and 222 of the first and second sheets, respectively. Along the first and second free edges, the first and second sheets define first and second hems 24i and 242, respectively, interrupted by first and second windows 26i and 262>respectively. The first and second closure ties are slidably mounted in the first and second hems, respectively. They are accessible through the first and second windows, respectively. Their right and left ends are fixed to the right 18d and left 18g edges of the envelope, respectively, so that their extraction through the first and second windows, respectively, or "clamping", causes a contraction of the first and second free edges 22i and 222, and thus the constriction of the opening 20.The first and second sheets 16i and 162 define first and second inner faces 281 and 282.

[0135] The closure ties 14i and 142 are ribbons. These ribbons have a width greater than 20 mm, in particular approximately 25 mm. The closure ties 14i and 142 may comprise at least 30% PIR plastic, in particular 100% HDPE in the example described.

[0136] The envelope 12 comprises an absorbent pad 15. This pad 15 is made of a mixture of cotton wool and a powder made of a super absorbent polymer. The volume of the absorbent pad is adapted to absorb the liquid waste introduced into the envelope by the patient.

[0137] The absorbent pad 15 is fixed on at least one of the inner faces of the envelope, preferably on only the second inner face 282. The pad 15 is fixed by means of a reversible glue, that is to say chosen so as to allow a detachment of the absorbent pad 15 and / or the second sheet without deterioration of the absorbent pad 15 and / or the second sheet, respectively.

[0138] The envelope 12 is formed from a plastic film 29 comprising more than 30% recycled plastic. This plastic film has a thickness of less than 40 microns, in particular approximately 32 microns. The recycled plastic is manufactured from a recycled plastic resin from the company CY plastique of a grade greater than or equal to the NAT% PLUS grade. The recycled plastic resin used has a density of approximately 0.9169 g / cm3 and a melt flow index of approximately 1.60 g / 10 min. The plastic film 29 of the envelope 12 may comprise more than 30% post-consumer recycled (PCR) plastic, in particular in the example described 100% PCR plastic.

[0139] The film made of material 29 may comprise at least 30% low-density polyethylene (LDPE), in particular in the example described 100% low-density polyethylene.

[0140] The recycled plastic resin is configured so that the plastic film 29 is white in color when viewed in white light and has a glossy appearance.

[0141] The recycled plastic film 29 is manufactured using a recycled plastic resin produced from plastic waste from a single supplier. The recycled plastic resin is produced from the same type of plastic waste. This is the inner film of "jumbo bags" or beanbags in French. [Fig. 2] schematically illustrates a method that can be implemented to manufacture a hygienic bag 10 according to the invention.

[0142] In a first step a), a grade of a recycled plastic resin, in particular low density polyethylene supplied, is confirmed.

[0143] In step b), a mixture is prepared from the recycled plastic resin and optionally from a slip agent masterbatch. The respective proportions of the elements of this mixture are optimized to obtain a white and shiny plastic film 29.

[0144] In a step c), a film blowing machine is filled with said mixture, the machine having in particular been cleaned beforehand.

[0145] Step d) comprises the arrangement of a filter, in particular a new filter, with a mesh size of between 85 and 120 mesh, in particular approximately 100 mesh, in the blowing machine, intended to be replaced in particular at least every 24 hours, or even every 12 hours.

[0146] Step e) is the step of blowing the film with the blowing machine.

[0147] Optionally, a step f) completes this process, in which the film is left to stand in the open air for at least 24 hours.

[0148] The method may also optionally include a step g) following these steps where at least one item of information is printed on the film, in particular information on the brand and logo of the manufacturer of the hygienic bag 10 or information on the volume of waste contained in the bag 10.

[0149] A step h) of assembling the bag 10 from the plastic film 29 may be included in this method. Finally, the method may comprise step i) of inserting the absorbent pad 15 into the bag 10.

[0150] The invention is not limited to the examples described.

[0151] The hygienic bag 10 may be a urinary bag or a vomit bag. In this embodiment, the closing tie(s) may be cords.

[0152] In one embodiment, the plastic film 29 of the envelope 12 may comprise more than 30% post-industrial recycled (PIR) plastic, better still at least 40% PIR plastic, better still at least 50% PIR plastic, even better still at least 60% PIR plastic, even better still at least 70% PIR plastic, even better still at least 80% PIR plastic, even better still at least 90% PIR plastic, in particular 100% PIR plastic.

[0153] The absorbent pad 15 can also, for example, be housed in the envelope, without being fixed there.

Claims

Claims

1. Plastic film comprising more than 30% recycled plastic.

2.

3. A plastic film according to claim 1, being translucent. A plastic film according to any preceding claim, being white in color when viewed in white light.

4. Plastic film according to one of the preceding claims, being transparent.

5. Plastic film according to one of the preceding claims, said recycled plastic being manufactured from a recycled plastic resin of a sufficiently high grade so that the melt flow index of the resin is greater than or equal to 1.40 g / 10 min, better still greater than or equal to 1.50 g / 10 min, even better still greater than or equal to 1.60 g / 10 min.

6. A plastic film according to any preceding claim, said recycled plastic being made from a recycled plastic resin of a sufficiently high grade that the density of the resin is greater than 0.9g / cm3.

7. Bag comprising: - a sealed envelope provided with an opening, the envelope being formed from a plastic film according to any one of the preceding claims, - optionally, at least one tie for closing said opening, the closing tie being in particular slidably mounted in a hem of the envelope so that extraction of said closing tie from said hem reduces said opening.

8. Bag according to the preceding claim, being a hygienic bag, in particular for medical use.

9. A bag according to claim 7, being configured for the safe storage and / or transport of food.

10. A bag according to claim 7, being configured for industrial use.

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