• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Absorbent envelope made of ethylene or other gases for packaging of fresh products for the retail market that, formed by two sheets joined together at their edges (4) by welding, manufactured, at least one, for example the lower one (2), with material porous, water-repellent and breathable, combined or not with another (3) made of impermeable material, and an ethylene absorbent granulate (5) contained inside, to absorb gases or other volatiles produced by fresh products incorporated in small packaging (6) where said granulate (5) consists of a substrate impregnated with potassium or sodium permanganate in a high concentration, between 0.25% and 2%, mixed or not with activated carbon, such that, when the envelope (1) is in contact With the humidity produced by the products, the risk of staining and contamination of the same with the active ingredient is minimal and the absorption efficiency is maintained. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2784943A1
    申请号:ES201930287
    申请日:2019-03-28
    公开日:2020-10-02
    发明作者:Pons Ramón Geli；Vilar Mónica Sabater；Guerrero Carmen Moreno
    申请人:Greenkeeper Iberia S L；
    IPC主号:
    专利说明:

    [0003] OBJECT OF THE INVENTION
    [0005] The invention, as stated in the wording of the present specification, refers to an absorbent sachet of ethylene or other gases for packaging fresh products for the retail market that provides, to the function for which it is intended, advantages and novelty characteristics , which are described in detail below, which represent an improvement of the current state of the art.
    [0007] More specifically, the object of the invention focuses on an absorbent envelope of which, formed as a container in the form of an envelope, manufactured with technical porous, water-repellent and breathable materials combined or not with waterproof materials, incorporate absorbent granulated materials inside. of ethylene or other gases, being applicable for the absorption of said type of gases or other volatiles produced by fresh products such as fruits, vegetables, flowers or ornamental plants, and prevent them from deteriorating prematurely, distinguished by the fact that the aforementioned content of Absorbent material in the form of granules, which consists of a substrate impregnated with potassium permanganate, is incorporated in low concentrations giving it specific properties that, as the envelope is in contact with the humidity produced by the aforementioned fresh products, the risk of staining and contamination of the same with the active ingredient, even or when the envelope is accidentally opened, and, at the same time, the efficiency of absorption of polluting gases is maintained, which makes it an envelope especially suitable for use in the retail market where the safety of the product that is being used is extremely important. offers to the end customer.
    [0009] FIELD OF APPLICATION OF THE INVENTION
    [0011] The field of application of the present invention is framed within the sector of the industry dedicated to the filtration of gases, specifically in the manufacture of breathable containers and envelopes to absorb ethylene and / or other volatiles produced by fruits, vegetables, flowers and ornamental plants, and other fresh products. More specifically, the product is intended for the retail market of small packages, in which fruits, vegetables, flowers and culinary herbs are placed ..., in all their formats. These small packages can be nacelles (both plastic and cardboard, either closed or with openings, with a lid or in a “flow pack”), boxes or bags made of any of the different materials that are commonly used to package this type of product.
    [0013] BACKGROUND OF THE INVENTION
    [0015] As a reference to the state of the art, it is worth mentioning patents numbers ES2547033A2 and P201830799, owned by the applicant himself, referring to a porous anti-humidity envelope, formed by two sheets, joined by their edges by welding, which are made of different materials, one being porous made of water-repellent, breathable material that does not allow bacteria to pass through, and another made of waterproof laminated plastic material, consisting of two layers of any plastic material; the external one is made of resistant plastic material, and the internal one is made of plastic material suitable for welding with the porous blade without using wax. The outer layer is polyester and the inner layer is polyethylene, both of variable thickness. The waterproof sheet optionally has a transparent area and / or incorporates graphic printing. Inside the envelope incorporates absorbent elements.
    [0017] The traditional envelopes that are the subject of the previous patents are already safe, and can endure in a flood situation for a minimum of more than 15 days. However, it is difficult to achieve a production process with envelope failure rates of less than 1 / 100,000.
    [0019] The objective of the present invention is the development of a new improved envelope so that it can be sold for tens of millions in the retail market, and that therefore would reach the final consumer of the fresh product, where ten open envelopes out of every million would not be acceptable. for this market.
    [0021] Specifically, the product improves so that, even if the user opens the envelope with scissors (they cannot be opened without them), they do not have the problems of staining or contamination with the active ingredient that they could have with envelopes used for the market. wholesaler.
    [0022] Furthermore, it is the circumstance that the quantity of fresh product contained in the packaging of the retail market is much lower than that of the packaging destined for the wholesale market, for which traditional envelopes are designed. Consequently, the emission of ethylene and other volatiles by fresh products in these packages will also be much lower, and therefore the amount of active product required to remove these compounds from the air is not so high. The traditional sachets on the market contain absorbent granules with an active ingredient concentration (potassium or sodium permanganate) greater than 4%. The present invention proposes to use a permanganate concentration much lower than what is being used today in the market.
    [0024] There is currently another label or adhesive type product on the market for the same application. Specifically, a product called "It's Fresh", a label, adhesive or not, made up of a layer of Tyvek® and another plastic. Internally as an active principle, there is a fine mixture of zeolite with palladium nanoparticles based on a development by Johnson Matthey Inc. However, the low amount of absorbent used, less than 20mg, makes the product's effectiveness very limited.
    [0026] The objective of the invention is, therefore, to provide the market with a new type of envelopes that, with the same resistance, air porosity, anti-humidity protection and efficiency in removing contaminants, allow a manufacture adapted to large production volumes. necessary to meet the demand of the retail market.
    [0028] On the other hand, it should be noted that, at least by the applicant, the existence of any other envelope or invention of similar application that presents technical, structural and constitutive characteristics equal or similar to those presented by the one claimed herein is unknown.
    [0030] EXPLANATION OF THE INVENTION
    [0032] The absorbent envelope of ethylene or other gases for packaging fresh products for the retail market that the invention proposes is configured as an optimal solution to achieve the stated objectives, being the characterizing details that make it possible and distinguish them conveniently included in the final claims accompanying this description.
    [0033] More specifically, what the invention proposes, as pointed out above, is a new type of envelope that, being able to be of a range of formats that contain a quantity of granules and content of potassium or sodium permanganate in the granules, is distinguished than the usual sachets already known to contain low concentrations of permanganate, thereby minimizing the risk of staining and contamination of fresh produce with the active ingredient, even when the sachet is accidentally opened.
    [0035] In the preferred embodiment, said granulate is a granulate composed of a high purity natural clay base impregnated with a concentration of potassium or sodium permanganate that can range between 0.25 and 2%, the preferred impregnation range being that of between 0.25% and 1%, and the preferred formulation is 0.5%.
    [0037] The preferred clay base is zeolite (clinoptilolite or heulandite type), but other natural clays such as sepiolite, bentonite, smectite, vermiculite, kaolinite, illite or attapulgite, and also synthetic zeolites and activated alumina or hydrated alumina can also be used.
    [0039] Clinoptilolite zeolite by itself has an ethylene absorption capacity of 0.3 lit of C2H4 / kg of granulate without any impregnation. If this zeolite is impregnated at increasing concentrations of permanganate, this absorption capacity increases (see Table 1). But, if the impregnation range is kept within the aforementioned range, the typical purplish coloration of potassium permanganate does not occur and the risk of staining or contamination of fresh produce is minimized.
    [0041] Table 1. Ethylene absorption capacity of the granules as a function of the potassium permanganate concentration.
    [0043]
    [0046] Optionally, said granulate can be used alone or mixed with an amount of granular activated carbon that can range from 1 to 45% of the total weight of the granulate in the envelope. The preferred mixture being 30% by weight of the mixed granulate.
    [0047] Although the main effect is always to remove ethylene from the air to avoid its hormonal effects on fruits, numerous scientific articles speak of the positive effects of cleaning other volatile compounds produced by fresh products themselves in terms of delaying fungal development . Active carbon broadens the spectrum of air cleaning, and its special affinity for cleaning high molecular weight gaseous products is known. The products that permanganate cleanses are low molecular weight gases such as ethylene, ethanol, and acetaldehyde, which are low molecular weight.
    [0049] If activated carbon is incorporated into the formulation, it is also possible to slow down the absorption of water by the granules (see Table 2). When the granulate absorbs water, its absorption efficiency is limited and the risk of leakage of the active ingredient from the sachet is increased. As the risk of water accumulation in the envelope is greater the smaller its size, the incorporation of activated carbon in the range of sizes of this invention allows increasing the effectiveness and safety of the same in applications with high humidity.
    [0051] Table 2. Water absorption by sachets with or without activated carbon (AC) under flood conditions.
    [0053]
    [0056] Preferably, a granulometry (between 2 and 0.5 / 0.2 mm) and density (0.93 /-0.5% g / ml) are used which, as has already been described in previous patents of the same applicant, allow the inclusion of a greater quantity granules per packaging material.
    [0058] Likewise, the envelopes can have any of the usual weights and sizes within the range of optimized size envelopes that is also already known in the state of the art, however, the preferred sizes being two models of 40x46 mm and 50x46 mm , in which different amounts of the indicated formulations can be introduced, depending on the type of product to be protected.
    [0059] The envelopes can be presented individually and also in strips so that they can be used in automatic cutting and gluing machines. Furthermore, optionally said strips of envelopes can also be made in such a way that the laminated material face contains an adhesive, so that they can be applied by machine or by hand in small packages.
    [0061] The envelopes can also be housed on the outside of the lid of closed nacelles, in a space created in the lid with grooves towards the interior of the nacelle, and be covered in that housing by the nacelle label that is applied just above.
    [0063] The envelopes can also have a double function: that of protecting the fresh product by eliminating ethylene and other volatile compounds, and that of providing information to the customer by working as a label. The packaging is transparent, so information on the type of fresh product and its origin can be printed on one side of the envelope (the laminated plastic side that is in direct contact with the packaging), and on the other side (the Tyvek® material), the usual safety information on the envelope can be printed.
    [0065] As mentioned above, then, the main advantage of the envelope of the invention is that said granulate allows to effectively eliminate ethylene and other volatile compounds from the air in fresh produce packaging for the retail market and, at the same time, reduce the minimizes the risk of staining and contamination by the active ingredient of said fresh products, an essential requirement to guarantee consumer safety.
    [0067] Tables 3, 4 and 5 below show the performance of the sachets based on the estimated quantities of ethylene produced in fresh product packaging (strawberry, raspberry and blueberry) with different weights usually found in the retail market during a realistic commercial life span. The figures obtained from the remaining absorption capacity of the sachets after the commercial life period has elapsed indicate that the sachets are sized to loosely absorb the ethylene emitted by fresh products.
    [0069] Table 3. Remaining absorption capacity of the sachets object of the invention after a commercial shelf life of 7 days in raspberry packaging.
    [0070]
    [0073] (1) Emission ratio of raspberry at 20 ° C: 6 | jl / kg * h (Harshaman, 2012; Thesis University of Maryland, U.S.A)
    [0074] (2) Estimated emission for raspberry (ml): 6 jliter / kg * h x 0.125 kg x 7 days x 24 hoursx10-3 (3) Absorption capacity of the sachet (ml C2H4): 0.375 g x 1 ml / g (Z1)
    [0075] (4) Remaining absorption capacity (%): 100 * (0.375 - 0.13) /0.375
    [0077] Table 4. Remaining absorption capacity of the sachets object of the invention after a commercial life of 14 days in strawberry packaging.
    [0079]
    [0082] (1) Emission ratio of strawberry at 20 ° C: 0.1 jl / kg * h (http://postharvest.ucdavis.edu) (2) Estimated emission for strawberry (ml): 0.1 jl / kg * hx strawberry weight (kg) x 14 days x 24 hours x 10-3
    [0083] (3) Absorption capacity of the sachet (ml C2H4): weight of sachet (g) x 0.8 ml / g (Z1 / AC) (4) Remaining absorption capacity (%): 100 * (actual over-emission capacity ) / capacity over
    [0085] Table 5. Remaining absorption capacity of the envelopes that are the object of the invention, packaging of two varieties of blueberry.
    [0087]
    [0088] (1) Cranberry emission ratio at 20 ° C: 2 | jl / kg * h (http://postharvest.ucdavis.edu) (2) Estimated blueberry emission (ml): 2 jl / kg * hx weight fruit (kg) x commercial life (days) x 24 hours x 10-3
    [0089] (3) Absorption capacity of the sachet (ml C2H4): weight of sachet (g) x 0.8 ml / g (Z1 / AC) (4) Remaining absorption capacity (%): 100 * (actual over-emission capacity ) / capacity over
    [0091] The described on absorbent of ethylene or other gases for packaging of fresh products destined for the retail market represents, therefore, an innovation of structural and constitutive characteristics unknown until now, reasons that, together with its practical utility, provide it with sufficient basis to obtain the privilege of exclusivity that is requested.
    [0093] DESCRIPTION OF THE DRAWINGS
    [0095] To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, the present specification is accompanied, as an integral part thereof, by a set of drawings in which for illustrative purposes and non-limiting, the following has been represented:
    [0097] Figure number 1.- Shows a sectional view, according to a longitudinal section, of an example of an ethylene absorbent envelope that is the object of the invention, showing the main elements it comprises.
    [0099] Figure number 2.- Shows a comparative graph of the ethylene absorption capacity of clinoptilolite granules impregnated with potassium permanganate at concentrations of 0.25% (Z0.25), 0.5% (Z0.5) and 1% (Z1) in comparison with a traditional granulate impregnated at 4% (Z4).
    [0101] Figure number 3.- Shows a schematic perspective view of an example of a nacelle-type container with a housing in the lid to incorporate the absorbent envelope that is subsequently covered by the label of said container.
    [0103] PREFERRED EMBODIMENT OF THE INVENTION
    [0104] Thus, as seen in Figure 1, the envelope (1) in question, which in a known way consists of a container formed by two sheets, a lower one (2) and an upper one (3), which are joined together by Its edges (4) by welding, which are manufactured, at least one, for example the interior (2), with porous, water-repellent and breathable material, the other (3) being made of waterproof material or not, and inside which contains a granulate (5) of ethylene absorbent material, which granulate (5) consists of a substrate impregnated with potassium or sodium permanganate, is distinguished by the fact that said granulate (5) is impregnated in low concentration, specifically in such a way that, since the envelope (1) is in contact with the humidity produced by the fresh products incorporated in small packages (6) for which it is intended, even if the envelope (1) is accidentally opened, the risk of staining and contamination of the same with the active ingredient is very low and, at the same time, it remains ne the efficiency of absorption of polluting gases.
    [0106] More specifically, the granulate (5) contained in the envelope of the invention is composed of a high purity natural clayey base impregnated with potassium or sodium permanganate in a concentration between 0.25% and 2%, and has an approximate particle size of between 2 and 0.125 mm and an approximate density of between 1.1 and 0.8 g / ml.
    [0108] The clay base is preferably zeolite, in particular the clinoptilolite or heulandite type, but without ruling out that other natural clays can also be used, such as sepiolite, bentonite, smectite, kaolinite vermiculite, illite or attapulgite, and also synthetic zeolites and activated alumina or hydrated alumina.
    [0110] Preferably, the preferred concentration range of the impregnation of the granulate (5) with potassium permanganate will be 0.25 to 1% and the preferred formulation is 0.5%.
    [0112] This granulate (5) can be used alone and, optionally or for high humidity applications, mixed with a quantity of granular activated carbon that can range from 1% to 45% of the total weight of the granulate in the envelope. The preferred mixture being 30% by weight of the mixed granulate.
    [0114] On the other hand, preferably, the size of the envelope (1) is between 40x46 mm and 50x46 mm, without ruling out other sizes already known on the market.
    [0116] The envelopes may be presented individually and also in strips so that they can used in automatic cutting and gluing machines for insertion in product packaging (6).
    [0118] In addition, optionally said envelope strips or the envelopes (1) themselves can be made so that the external face of one of the two sheets (2, 3) that form them contains an adhesive, so that they can be applied, by machine or by hand, in small packages (6).
    [0120] In any case, the envelope (1) of the invention is intended to be incorporated inside the different types of packaging (6) existing in the retail market.
    [0122] For example, as shown in figure 3, it can be housed on the outside of the lid (7) of closed basket-type packages (6), in a space (8) created for this purpose in said lid (7) with grooves (9) open towards the inside of the packaging (6), being covered at the top in said space (8) by the label (10) that is applied just above. In figure 3 the elements mentioned have been shown in exploded view to allow their observation.
    [0124] The envelope (1) can also fulfill a double function: that of protecting the fresh product by eliminating ethylene and other volatile compounds, and that of providing information to the customer by functioning as a label. For this, the packages (6) are transparent, and on one side of the envelope (1), that of the waterproof sheet (3) that is in direct contact with the packaging (6), information about the type of fresh product can be printed. and origin thereof and, on the other side, that of the porous sheet (2), the usual security information of the envelope can be printed.
    [0126] Having sufficiently described the nature of the present invention, as well as the way of putting it into practice, it is not considered necessary to make its explanation more extensive so that any expert in the field understands its scope and the advantages derived from it, stating that, Within its essentiality, it may be put into practice in other forms of implementation that differ in detail from that indicated by way of example, and to which it will also achieve the protection that is sought provided that its fundamental principle is not altered, changed or modified. .
    权利要求:
    Claims (13)
    [1]
    1. - ABOUT ABSORBENT OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, consisting of two sheets, a lower one (2) and an upper one (3), which are joined together by their edges (4) by means of welding, which are made, at least one, for example the lower one (2), with porous, water-repellent and breathable material, combined or not with another (3) of waterproof material, and with a granulate (5) of ethylene absorbent material contained in its interior, and that applicable for the absorption of said type of gases or other volatiles produced by fresh products incorporated in small packages (6) in order to prevent them from deteriorating prematurely, is characterized in that said granulate (5) consists of a substrate impregnated with permanganate in a low concentration, between 0.25% and 2%, such that, as the envelope (1) is in contact with the humidity produced by the fresh products incorporated in the packaging (6), even if the about opens accident In particular, the risk of staining and contamination of the same with the active ingredient is very low and, at the same time, the efficiency of absorption of polluting gases is maintained.
    [2]
    2. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to claim 1, characterized in that the granulate (5) contained is composed of a high purity clay base impregnated with potassium or sodium permanganate in a concentration between 0.25% and 2%, and has an approximate particle size of between 2 and 0.125 mm and an approximate density of between 1.1 and 0.8 g / ml.
    [3]
    3. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to claim 2, characterized in that the clay base is a natural zeolite clay, clinoptilolite or heulandite type.
    [4]
    4. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS FOR THE RETAIL MARKET, according to claim 2, characterized in that the clayey base is a natural clay chosen from among sepiolite, bentonite, smectite, vermiculite, kaolinite, illite or attapulguite .
    [5]
    5.- ABOUT ABSORBENT OF ETHYLENE OR OTHER GASES FOR PACKAGING FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to claim 2, characterized in that the clay base is a base of synthetic zeolites and activated alumina or hydrated alumina.
    [6]
    6. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 5, characterized in that the preferred concentration range of the impregnation of the granulate (5) with potassium or sodium permanganate is 0.25 to 1%.
    [7]
    7. - ABOUT ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS FOR THE RETAIL MARKET, according to claim 6, characterized in that the concentration of the impregnation of the granulate (5) with potassium or sodium permanganate is 0.5%.
    [8]
    8. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 7, characterized in that the granulate (5) is mixed with a quantity of granular activated carbon that ranges from 1 to 45% of the total weight of the granulate in the envelope.
    [9]
    9. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to claim 8, characterized in that the amount of activated carbon in the mixture of granules (5) with activated carbon is 30% by weight .
    [10]
    10. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 9, characterized in that the size of the envelope (1) is between 40x46 mm and 50x46 mm.
    [11]
    11. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 10, characterized in that the external face of any of the two sheets (2, 3) that it comprises has a adhesive to be applied, by machine or by hand, in small packages (6).
    [12]
    12. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 11, characterized in that it is housed on the outside of the lid (7) of pod-type packaging (6) closed, in a space (8) created for this purpose in said cover (7) with slots (9) open towards the inside of the packaging (6), being topped in said space (8) by the label (10) that is applied right above.
    [13]
    13. - ABSORBENT ENVELOPE OF ETHYLENE OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET, according to any of claims 1 to 12, characterized in that, in transparent packaging (6), in addition to protecting the fresh product by eliminating ethylene and other volatile compounds, provides information to the customer by working as a label, since the side of the envelope (1) that is in direct contact with packaging (6) has information on the type of fresh product and its origin printed, and the other expensive usual security information on the envelope.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO1995013122A1|1993-11-10|1995-05-18|Fred Klatte|Chemically impregnated zeolite and method for chemically impregnating and coating zeolite|
    US20060070523A1|2004-10-04|2006-04-06|Sud-Chemie, Inc.|Sodium permanganate ethylene absorption agent|
    WO2006125834A1|2005-05-25|2006-11-30|Pedro Sanchez Juan Luis|Method of applying a volatile-absorption agent in order to purify the atmosphere in which fruit and vegetable products are stored|
    US7387205B1|2005-11-10|2008-06-17|The United States Of America As Represented By The Secretary Of Agriculture|Packaging system for preserving perishable items|
    US20080178559A1|2007-01-26|2008-07-31|Multisorb Technologies, Inc.|Sorbent Packaging|
    WO2015110682A1|2014-01-23|2015-07-30|Wang Yinan|Gas absorption pocket for containers of perishable products|
    US20180099804A1|2016-10-12|2018-04-12|Boveda Inc.|Device for controlling headspace humidity and methods for making the same|
    ES2547033B1|2014-07-30|2016-11-24|Greenkeeper Iberia, S.L.|ABOUT POROSO ANTIHUMEDAD|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201930287A|ES2784943B2|2019-03-28|2019-03-28|ABOUT ETHYLENE ABSORBENT OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET|ES201930287A| ES2784943B2|2019-03-28|2019-03-28|ABOUT ETHYLENE ABSORBENT OR OTHER GASES FOR PACKAGING OF FRESH PRODUCTS INTENDED FOR THE RETAIL MARKET|
    PCT/ES2020/070200| WO2020193834A1|2019-03-28|2020-03-23|Sachet that absorbs ethylene or other gases for containers of fresh produce intended for the retail market|
    EP20779426.4A| EP3950532A1|2019-03-28|2020-03-23|Sachet that absorbs ethylene or other gases for containers of fresh produce intended for the retail market|
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