MXPA06009084A

MXPA06009084A - Packages with active agents

Info

Publication number: MXPA06009084A
Application number: MXPA/A/2006/009084A
Authority: MX
Inventors: William P Belias; Toby R Thomas; Nate Kolovich; Steven P Long
Original assignee: William P Belias; Chen Paul N; Nate Kolovich; Pactiv Corporation; Toby R Thomas
Priority date: 2004-02-10
Filing date: 2006-08-10
Publication date: 2007-04-10

Abstract

Packages with active agents are described. Generally, each disclosed package (10) has a pair of opposing body panels (16, 18) joined together along a pair of opposing sides and a bottom bridging the sides so as to define a mouth opposite the bottom, a reclosable fastener (14) extending along the mouth, and an active agent (50, 52). The reclosable fastener (14) includes a pair of polymeric tracks (24, 30) in which each track includes a mating element (26, 32) and a fin portion (28, 30). The mating elements (26, 32) are releasably engageable to each other, and each of the fin portions (28, 30) extends downwards from the respective mating element (26, 32) towards the bottom of the reclosable package (10). The active agent (50, 52) is associated with at least one of the fin portions (28, 30) for communication with the interior (22) of the reclosable package (10).

Description

PACKAGES THAT CAN BE CLOSED WITH ACTIVE AGENTS Field of the Invention The present invention relates to packages and structures and methods for releasing active agents in these packages. More specifically, the present invention relates to active agents, such as freshness-prolonging agents, odor control agents and other functional agents and structures and to methods for releasing these active agents to prolong the freshness of perishable products and for manage or control the odor related to these products arranged within these packages.

BACKGROUND OF THE INVENTION Re-sealable packages, such as food packages with adapted or articulated lids, and bags with push closure fasteners or sliding devices, are of great convenience for suppliers and consumers of packaged perishable goods. previously, especially for products such as assorted sausages and cheeses where, typically, only a portion of the product is used at any given time. The reclosable packages are also convenient especially for home use to store leftover perishable products. However, a problem with these reclosable packages is that they do not contain any features that serve to prolong the period of time that the perishable product can be stored in the package and remain fresh. In this way, the content of the package may be spoiled sooner and, if so, the content will no longer be suitable for human consumption. The cost of breaking down perishable products is a significant problem for both consumers and commercial users of re-closed packages. An attempt to solve the problem of the decomposition of perishable products has involved the use of laminated tamper-evident seals that are substantially impermeable to oxygen. In this type of system, as soon as the package is opened for the first time, the seal breaks and does not inhibit the decomposition of the perishable product any longer. In this way, this type of system solves only the problem of the decomposition of perishable products before the package is opened initially and does not serve the user in the household who places the remaining perishable products inside the storage bags. Therefore, there is a need for a package with a feature that inhibits the breakdown of perishable products.

Brief Description of the Invention Packages with active agents are described in this document. Generally, each of the described packages of the present invention has a pair of opposed body panels that are joined along a pair of opposite sides and a bottom that connects the sides to define a mouth at a location opposite the bottom, a reclosable fastener which extends along the mouth and an active agent. The reclosable fastener includes a pair of polymeric channels, in which each of the channels includes a connecting element and a fin portion. The connecting elements are releasably engageable with each other. Each of the fin portions extends generally downwards from the respective connecting element towards the bottom of the reclosable pack. In accordance with one aspect of the present invention, a reclosable package is provided with an active agent that is associated with at least one of the fin portions for communication with the interior of the package. The active agent is applied to at least one of the fin portions by means of at least one of the brush application, impregnation, rolling, spraying, coating and stamping of the active agent on at least one of the fin portions. Alternatively, the active agent is extruded with at least one of the fin portions. For example, the active agent can be distributed in the form of microcapsules in at least one of the fin portions. Alternatively, the active agent is incd in a layer of active agent that is attached to at least one of the fin portions via at least one adhesive, coextrusion, heat seal and welding (e.g., ultrasonic welding). Alternatively, the active agent is incd in at least one of a coating, patch, bag and tape, applied to at least one of the fin portions. According to another aspect of the present invention, the active agent is an agent for the prolongation of freshness that incs an isothiocyanate compound. The agent for prolonging freshness may also inc an acid and / or a fragrance. According to another aspect of the present invention, a structure is provided to selectively initiate the release of the active agent. Alternatively, the active agent is released by means of moisture. According to another aspect of the present invention, there is provided a single-use breakable element which extends between the fin portions and is disposed between the inner part and the reclosable fastener. The active agent can be arranged on and / or under the single-use breakable element. According to another aspect of the present invention, a barrier layer associated with at least one of the body panels is provided to define a barrier environment for the interior. According to another aspect of the present invention, a barrier layer associated with at least one of the fin portions is provided. The barrier layer is located more distant from the interior than a layer of active agent that incs the active agent. According to another aspect of the present invention, a diffusion layer associated with at least one of the fin portions is provided. The diffusion layer is adjacent to a layer of active agent that incs the active agent. The diffusion layer is located closer to the interior than the active agent layer. According to another aspect of the present invention, a reclosable package is provided with a first opposed body panel having an inner surface and an outer surface, a second opposed body panel having an inner surface and a exterior surface and a polymer seal that can be closed again. The first and second body panels are joined along a pair of opposite sides and a bottom connecting the sides to form an open mouth at one end. The joined body panels form an interior space. The reclosable polymer seal extends along one end of the respective inner surfaces of the first and second opposing body panels and incs a first and second polymer channels. The first polymeric channel incs a first joining element and a first fin portion, in which the first fin portion extends generally downwardly of the first connecting element toward the bottom of the package. The second polymeric channel incs a second joining element and a second fin portion, in which the second fin portion extends generally downwardly of the second attachment element towards the bottom of the package. The first and second joining elements are releasably engageable with each other. The first fin portion incs at least a first layer that has an active agent and a second layer that is a barrier layer. The second fin portion incs at least a third layer that has an active agent and a fourth layer that is a barrier layer. These and other features of the described packages of the present invention can be more fully understood by reference to the following detailed description and associated drawings. The drawings are not made to scale, but show only relative dimensions.

BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a sectional view of a mouth portion of a reclosable pack or bag according to one embodiment of the present invention, FIGURE Ib is a sectional view of a portion of mouth of a reclosable package or bag according to another embodiment of the present invention; FIGURE is a sectional view of a mouth portion of a reclosable pack or bag according to a further embodiment of the present invention; FIGURE 1d is a sectional view of a mouth portion of a reclosable pack or bag according to yet another embodiment of the present invention; FIGURE 2 is a perspective view of the reclosable packet incorporating a mouth portion of FIGURE Ib in which a reclosable fastener or zipper has a sliding mechanism that is open and a breakable element. of single use that is partially open; FIGURE 3a is a sectional view of a mouth portion of a reclosable pack or bag according to another embodiment of the present invention; FIGURE 3b is a sectional view of a mouth portion of a reclosable pack or bag according to yet another additional embodiment of the present invention; and FIGURE 3c is a sectional view of a mouth portion of a reclosable pack or bag according to a further embodiment of the present invention; Detailed Description of the Invention The present invention relates to packages, packaging materials and other structures related to an active agent incorporated therein. As such, the invention has applications for various flexible and rigid packages and packages, such as resealable plastic bags, waste bags and wraps, rigid waste containers, hermetic containers, lunch boxes and packaging and thin sheets of metal for packaging commonly used to pack perishable products or to cover perishable products. As used herein, it can be understood that the term "package" includes any kind of package or package, such as flexible plastic bags and rigid containers, as well as thin sheets of metal and packaging commonly used for packing or storing articles. perishable As used herein, it can be understood that the term "active agent" includes any agent, ingredient or composition that provides an enhancing or beneficial effect within a package or package. An active agent may include an agent for "freshness extension" to prolong the freshness or shelf life of food products or other perishable products that are stored in a package, an agent for "odor control" for mask, neutralize and / or reduce odors of the package or other functional agent. Each of the active agents of the present invention can be used in combination with a package. More specifically, each agent for the freshness extension of the present invention can be used to inhibit the decomposition of food products or other perishable products in the package and each odor control agent of the present invention can be used to reduce, neutralize and / or mask package odors. Each of the active agents of the present invention can be disposed in the environment of the package, for example, it can be arranged in the form of a coating, patch, bag or tape that is applied to a component of the package; it can be extruded with a component of the package; it can be sprayed, brushed, coated, laminated or stamped on a component of the package; it can be impregnated within a component of the package; and / or can be distributed in the material of a component of the package, such as in the form of microcapsules. For purposes of illustration and not limitation, the freshness-prolonging agents of the present invention may be disposed in the environment of a polymeric bag for storing perishable goods. The polymer bag may be proposed for the consumer to store food products (eg, leftover food products) or applications, such as food packaging operations for "forming, filling and sealing". Polymeric bags can include resealable polymer bags that can not be reclosed. Resealable polymer bags are typically manufactured so that they can be resealed via resealable elements or fasteners, such as resealable adhesive or cohesive seals, solders (e.g. ultrasonic welds), joined channels and joined notches. The joined channels can be opened and closed by applying pressure with the fingers or by using an auxiliary device, such as a sliding device. Some examples of reclosable polymer bags include the bags described in U.S. Patent Nos. 5,067,208 and 6,147,588 and U.S. Patent Application Publication No. 2004/0066985, the contents of these documents are expressly incorporated by reference. in this document in its entirety. In addition, for purposes of illustration and not limitation, the freshness-prolonging agents of the present invention may also be arranged in the environment of a rigid package for storing perishable products, such as bread containers, cold cuts, containers for fruit, lunch boxes and containers for roast meat. Some examples of packages include the packages described in US Pat. Nos. 6,042,586, 6,257,401, 6,349,857, 6,644,494, 6,845,878 and the North American Patent Application Publications Nos. 2004/0074902 and 2005/0000966, the contents of these documents are expressly incorporated by reference in this document in their entirety. Additionally for purposes of illustration and not limitation, the odor control agents of the present invention can be used in the environment of bags and wrappings for collecting garbage or waste and other containers for collecting items with undesirable odors, such as clothing for wash and diapers. These waste bags can include a fastening feature that helps securely close the bag or wrap, forming a handle to carry the bag or wrap to be discarded and / or facilitating the opening of the bag or wrap. Some examples of waste bags include the bags described in U.S. Patent Application Publication No. 2003/0223657, the contents of this document being expressly incorporated by reference in this document in its entirety. Illustrative embodiments will now be described to provide a complete understanding of the packages described and the structures and related active agents. For purposes of illustration and not limitation, the packages of the present invention are described in the context of reclosable polymer bags. One or more examples of the illustrative embodiments are shown in the drawings. Those of ordinary experience in the field will understand that each described bag having an active agent can be adapted and modified to provide alternative forms of bags, packages and other packages with active agents for other applications and that other additions and modifications can be made to the active packages and agents described without departing from the scope of the present disclosure. For example, the characteristics of the illustrative modalities can be combined, separated, exchanged and / or reordered to generate other modalities. It is proposed that these modifications and variations be included within the scope of the present disclosure. Turning now to the drawings, FIGURE represents a portion of the mouth defined by a resealable package or bag 10 with a reclosable closure order such as a fastener or zipper 14. The fastener or zipper 14 can be opened and closed by applying pressure with the fingers or by using an auxiliary compression device, such as a sliding device. FIGURES lb-ld represent other portions of the mouth defined by packets or bags that can be resealed with a fastener or zipper. FIGURE 2 shows a resealable package 70 with the mouth portion shown in FIGURE Ib in a partially open position. Referring again to FIG. 1, the mouth portion of the reclosable pack 10 includes a pair of opposed first or second body or wall panels 16, 18 that form a body of the pack 20 (FIGURE 2) and define an interior space 22. Connected to the first body panel 16 is a first channel 24 having a first profile 26 and a first fin portion 28 extending generally downwardly from the first profile 26. The first body panel 16 has an outer surface 16a and an inner surface 16b. The first fin portion 28 has an outer surface 28a and an inner surface 28b. Connected to the second body panel 18 is a second channel 30 having a second profile 32 and a second fin portion 34 that extends generally downward from the second profile 32. The second body panel 18 has an outer surface 18a and a surface interior 18b. The second fin portion 34 has an outer surface 34a and an inner surface 34b. The inner surface 16b is attached to the outer surface 28a. The inner surface 18b is attached to the outer surface 34a-. The first and second profiles 26, 32 are releasably engaged with each other to provide a reclosable seal for package 10. The thicknesses of the first and second fin portions 28, 34 generally vary from about 50.8 to about 254 microns (from about 2 microns). to approximately 10 thousandths of an inch). More specifically, the thicknesses range from about 101.6 to about 177.8 microns (from about 4 to about 7 mils). The resealable packages of FIGS. 1-Id may further include an optional auxiliary sliding mechanism 36 (FIGURE 2) slidably mounted to the holder 14 for movement between a closed position and an open position. With reference to the FIGURES Ia-Id and 2, the first and second profiles 26, 32 are coupled together while the sliding mechanism 36 is in the closed position and the movement of the sliding mechanism 36 from the closed position to the open position uncouples profiles 26, 32 one from the other. The package 70 of FIGURE 2 also includes the end terminations 37. The end terminations may have various purposes such as (a) preventing or inhibiting the sliding mechanism 36 from exceeding the ends of the fastener 14, (b) interacting with the sliding device 36 to provide a tactile indication warning that it is closed, (c) to assist in the inhibition or prevention of leakage of the package 70 and (d) to hold together the first profile and the second profile 26, 32 and provide additional force to resist the applied stresses to the profiles 26, 32 during the normal use of the package 10. Additional details concerning the construction and operation of the slide mechanism 36 and the end terminations 37 can be obtained from US Patent No. 5,067,208 issued to Herrington, Jr. et al. , which is incorporated in this document as a reference in its entirety. It is contemplated that other end terminations may be used in place of the end terminations 37 described above. For example, an extreme weld can be formed by hot bars pressed against the end of the fastener, ultrasonic welding or other shapes known in the field. As illustrated in FIGURES la-Id and 2, resealable packages are opened by the consumer upon grasping the sliding mechanism 36 and moving it in such a manner that the first and second profiles 26, 32 of the first and second channels they separate from each other. Thereafter, the consumer tears the optional breakable element 12 (if present) along the preferential fragile area 38. Alternatively, the consumer may open the breakable element 12, if used, by cutting through it. The package can be sealed again using the fastener 14 and the sliding mechanism 36. Specifically, the consumer holds the sliding mechanism 36 and moves it from the open position to the closed position to engage the first and second complementary profiles 26, 32. An element single-use breakable 12 does not only provide a consumer with the assurance that a recently purchased package has not been opened before, but also provides a good initial seal that preserves the freshness of the food products, perishables or other package contents before its initial opening and can inhibit or prevent the active agent from being activated by an activation-stimulation condition, such as moisture. Since the reclosable closing arrangements of FIGS. Lb-ld are located on the single-use breakable element (ie, the reclosable closing arrangement is more distant from the interior space), the The closing order operation that can be closed again is not hindered by the presence of the single use breakable element. The first fin portion 28 and the second fin portion 34 have active agents 50 and 52, respectively, associated with them. The active agents 50, 52 may be the same or they may be different. Each active agent 50, 52 may include a substance known to provide a desired function or effect on the package or the content thereof. In some embodiments, the active agents include agents for the prolongation of freshness, a function that prolongs the life or freshness of the food products or other perishable products disposed in the package. In other embodiments, the active agent includes an odor control agent, which functions to mask, neutralize and / or reduce an undesirable odor or to produce an aromatic odor in the package. The agent 50 is incorporated into or on the fin portion 28. In some embodiments, the agent 50 is extruded with, or impregnated with, the first fin portion 28. For example, the agent 50 may be distributed in the form of microcapsules in the material of the first fin portion 28. In a preferred embodiment, the active agent is microencapsulated before being integrated into the package structure. The microencapsulation encloses the active agent within a polymeric material that can withstand heat during the processing and manufacture of the package, but which degrades, dissolves or otherwise opens and releases the active agent upon contact with predetermined environmental factors. , such as humidity. The active agent can be encapsulated in microcapsules and the microcapsules can be intermixed with the molten material of the fastener and extruded in the fastener 14 during bulk production. The first portion of fin 28 can be impregnated in another way with the active agent 50. It is also contemplated that the active agent 50 can be sprayed, brushed, coated, rolled, stamped or otherwise applied onto the first fin portion. 28. For example, the active agent can be disposed in a coating, patch, bag or tape that is applied (for example, via a pressure-sensitive adhesive) to the first fin portion 28 after the production of the fastener 14. The selection of a coating, patch or bag, or tape is often dependent on the type of active agent that is used. For example, an active agent in the form of a powder (for example, minerals containing chemicals) can be placed in an air-permeable bag, preferably a patch because it is often difficult to embed the powders in a patch. Alternatively, an active agent in powder form can be dusted onto a component of the package, for example, a fin or a body panel. Non-limiting examples of powdered active agents that can be incorporated into the structure containing the agent include perlite, calcium carbonate, kaolin and the antimicrobial agent ASEPTROL ™ manufactured by Engelhard. If a tape or patch is used to support the structure containing the agent, the tape or patch may include an adhesive, a patch-like component and / or a release system such as a slip additive which helps to inhibit or prevent the structure of the agent from sticking to the adhesive. For example, the release system may be located on a surface of the tape or patch 'which is located distally of the surface that contacts the body panel to which the tape or patch is to be attached, so as to be inhibited or prevented. the stickiness when the package is placed on a roll. Materials such as siloxane and glycerol monostearate may be among the components of this delivery system. An agent structure can vary in its dimensions and is dependent on factors such as the desired amount of the agent, the particular agent that is used, the number of agent structures that are used in the package, and the size of the package. According to another modality, the package may include two or more structures of the active agent. The structures of the agent of the present invention, such as a patch, tape or sack, can be attached to a package such as a reclosable bag by means of a pressure sensitive self-adhesive. The pressure sensitive pressure sensitive adhesive may be any suitable adhesive that binds the structure of the agent to the reclosable package. Non-limiting examples of pressure-sensitive adhesives that can be used include acrylic or rubber-based adhesives. The structure of the agent which is a belt or bag can be fed by roll onto one layer (s) of the reclosable pack. The roll-fed structure that is a belt or sack may also initially include a release wrap that helps prevent or inhibit the agent from sticking to itself prior to delivery to the reclosable pack. The release wrap, if used, is separated from the roll-fed tape or bag before the tape or bag is attached to the resealable package or bag. Examples of release wraps include silicon-coated paper. However, release wraps may be undesirable due to the additional cost associated with them. It is contemplated that the structure of the agent may be fed by roll without the use of a release wrap before being attached to the resealable package or bag. Alternatively, the agent which is a patch or sack may be fed by storage during joining to the reclosable package. The patch is preferably fed by storage, while the bag can be fed by storage or roll. The tape is preferably fed by roll during attachment to the reclosable pack. For example, the tape can be unwound, cut to a length and attached to the reclosable pack. According to another embodiment, the patch, tape or sack of the agent structure can be heat sealed directly to the reclosable pack or bag. The structure can be fed by roll or fed by storage before being thermally sealed to the pack that can be closed again. In a thermal sealing mode, a release wrap would probably not be used because the structure of the agent without any adhesive should not stick to itself and the release wrap adds an unnecessary cost. The structure of the agent can be attached to the packet that can be closed again in several locations. The structure of the agent can be attached to the body panels during the formation of the thermal seals. For example, the structure of the agent may be located between a side seal formed between the first and second body panels. It is contemplated that other joining methods may be used. It is contemplated that additional layers may be added for the coating, patch, sack or tape. For example, a barrier layer can be added to help keep the agent in communication with the interior of the resealable package and, thus, to help prevent or inhibit the agent from prolonging freshness permeate through the body panel. It is also contemplated that information on the structure of the agent such as on the barrier layer can be printed. It is contemplated that printing may occur on different locations of the structure. For improved visibility and readability of printing, it may be desirable to print on the surface of the structure of the agent that is closest to the body panel when the structure is located within the reclosable package. The structure of the agent which is a coating, patch, sack, tape in one embodiment is located within the pack that can be reclosed. Alternatively, the structure of the agent which is a coating, patch, sack, tape may be located on an outer surface of the package or within layers of the package such that the agent is capable of permeating within or communicating with the interior of the package. For example, the structure of the agent which is a coating, patch, sack or tape may be located on an outer surface of a reclosable packet in which a portion of the body panel is removed in such a manner that the agent content in the structure can permeate the interior of the package that can be closed again. It is contemplated that a layer of a reclosable package may be permeable with respect to the agent such that the agent is in communication with the interior of the reclosable package. Similarly, the active agent 52 can be incorporated or impregnated into or extruded with the second fin portion 34. It is also contemplated that the active agent 52 can be sprayed, brushed, coated, rolled, stamped or otherwise applied. on the second portion of fin 34. In some embodiments, the active agents 50, 52 include one or more agents for the prolongation of freshness. Each of the agents for freshness extension may be, for example, a natural oil, an antimicrobial agent, an acid or other substance that can prolong the freshness or shelf life of food products or perishable products. For example, some non-limiting examples of ingredients for the prolongation of freshness include isothiocyanate such as allyl isothiocyanate (AIT) from natural sources, d-limonene, eugenol, allicin, isothimol, thymol, chlorine dioxide, hydrogen peroxide, percarbonate sodium, ascorbic acid, citric acid, cinnamic aldehyde, mustard, cinnamon, mint, spearmint, triclosan, Chinese chives (Alliu tuberosum), cinnamon (Cinnamomum cassia), corni fructus (Cornus officinalis), allyl cyanide, 1-cyano-2, 3-epithiopropane, allyl thiocyanate, Lactobacillus reuteri, methyl isothiocyanate, cinnamon bark oil, oil lemon fodder, thyme oil, methyl jasmonate, tea tree oil, ethyl alcohol, salicylaldehyde, carvacrol, cymene, essential oil extracts of various onions, extract of garlic essential oils, phenolic extracts of cranberry berries, blackberry, raspberry, strawberry and raspberry, blueberry elagitaniñas, blackberry, raspberry, strawberry and raspberry, essential oils of nutmeg, mint, clove, oregano, cinnamon, sassafras, mugwort, thyme and rosemary, vanillin, vanillyl alcohol, vanillylic acid, diacetyl, natural honey, fluorine dioxide, carbon dioxide, modified atmospheres and combinations thereof. The modified atmosphere can include nitrogen, oxygen, sulfur dioxide, carbon monoxide, carbon dioxide and combinations thereof. TIA, which can be obtained naturally from plants or foods such as mustard and wasabi, is particularly advantageous as an agent for the prolongation of freshness due to its anti-microbial properties. TIA is produced from plants such as mustard, which contains glucosinolate and myrosinase enzyme. Myrosinase and glucosinolate react with each other to produce TIA and, because the reaction involves hydrolysis, moisture activates TIA production. It has been shown that TIA exhibits antibacterial and antimicrobial properties. Because the TIA is released in gaseous form, the TIA can permeate the interior of the package to inhibit bacterial growth therein and prolong the freshness of the food product or perishable product. Therefore, the products for the production of AIT, including wasabi, radish and mustard in various forms, such as extract, powder, oil or ground seed, can be used as the agent for the prolongation of freshness in modalities of the present invention. In some embodiments, an agent for freshness extension containing TIA can also be used in combination with another functional agent. For example, in one of these modalities, the AIT is combined with an acid, which greatly improves the production of AIT from the mustard and, in this way, the antimicrobial effect of the mustard. Thus, if ground mustard seed is used as the agent for freshness extension, it can be combined, in a desired ratio, with an anhydrous acid such as anhydrous citric acid for the increased production of TIA and the improved function of prolongation of freshness. The agent for the extension of freshness can also provide other functions and, therefore, can be used for these other purposes. In some embodiments, the freshness enhancing agent may include a freshness component to prolong the freshness of the food and an odor component to mask, reduce and / or neutralize only a pungent odor of the freshness component, but not others. smells of the contents stored in a package. Preferably, the odor component does not mask the odors of the contents stored in the package, such as food odors or odors of food decomposition, so that rotting or decomposition of the contents can be detected by means of the essence. For example, a freshness enhancing agent that includes a freshness component of AIT may also include a fragrance component, such as vanilla, cinnamon or citrus fruit oil, which may mask the pungent odor of AIT, but not It can mask or otherwise affect the smell of stored contents. Preferably, the agent for the prolongation of freshness does not impart its organoleptic properties to the stored contents and, in this way, allows a user to easily detect putrefaction or decomposition of stored contents by means of smell. Alternatively, in some embodiments, the active agents 50, 52 include one or more agents for odor control. Advantageously, the odor control agent can be incorporated into packages configured to collect garbage or waste to mask, neutralize and / or reduce undesirable odors. Alternatively, the odor control agent can be used to provide or create a package odor. In this way, an odor control agent can be incorporated into thermoplastic bags or wrappings and other containers, such as garbage or waste bags, diaper containers, laundry bags, storage bags and disposable medical bags or containers. Non-limiting examples of odor control agents include AIT, d-limonene, mustard, natural oils, chlorine dioxide, hydrogen sulfide, methyl mercaptan, ammonia, citronella, pine wood, flowers and substituted esters such as METAZENEMR . A preferred embodiment of an odor control agent includes AIT, which agent can be provided by the incorporation, for example, of mustard into the active agent. Mustard, whether in the form of ground mustard seed, powder, oil or paste, can be provided alone or in combination with an acid (such as citric acid) to catalyze the production of AIT from mustard and to improve the antimicrobial and odor control properties of mustard. Due to its effectiveness in prolonging the freshness of perishable products as previously described in this document, the AIT can provide multiple functions when incorporated into a package of perishable products, for example, the AIT can perform functions both of prolongation of the freshness as of odor control. In some embodiments, the odor control agent may include an additional ingredient to provide a pleasant or desired scent or scent to a user. For example, a natural oil such as lemon fodder oil can be used to control odors emanating from a package, to mask the odor of the primary agent for odor control itself or to make the smell of odor control more pleasant for a user. It has been shown that a composition comprising ground mustard seed and anhydrous citric acid mixed with about 5% by weight of lemon forage oil is particularly effective in controlling unpleasant odors. If an active agent 50, 52 includes an aromatic or perfume ingredient to provide a desired essence to a package, an additional material may be included to improve the concentration of the essence within the package. For example, active agent 50 may include perlite to increase the concentration of the essence. Perlite is desirable for use due to its ability to retain the essence, its stability and its surface area. Non-limiting examples of other materials for improving the essence include microspheres, talc, silicon, silicate such as aluminum silicate, vermiculite, diatomaceous earth or combinations thereof. In addition, according to the invention, the first and second fin portions containing at least one active agent include activation systems that are stimulated when the reclosable pack is opened or filled with a content. The activation systems may be of a mechanical nature, such as a perforation or a release system which, once it is separated, initiates the release of the active agent. Another method of activation can be based on the level of humidity or wetness that is present in the package (which correlates with the activity with the water content). For example, a high amount of moisture can initiate a chemical reaction that subsequently releases a volatile chemical such as carbon dioxide or chlorine dioxide. In this example, a larger amount of active agent is added when the humidity is higher in the pack that can be reclosed. Examples of reactions that are activated by a high humidity level are reactions of salts and acids, such as the reactions of sodium bicarbonate and citric acid or sodium hypochlorite and citric acid. The release of AIT is also aided by moisture as previously explained. In these examples, a greater amount of active agent is released into the atmosphere of the package when it increases the humidity. During a method of operation of a package that can be re-closed with an agent for the prolongation of the moisture-activated freshness, for example, the perishable products are placed inside the package and the level of humidity or wetness in the Perishable products activates the agent for the prolongation of freshness. Additionally, if the agent is disposed in a location close to the mouth of the package similar to a bag or next to the edge of a package similar to a package, selective activation or release can be performed. For example, the level of moisture or wetting of perishable products can activate the agent as perishable products travel in close proximity to the agent. (for example, through the mouth or pass the edge of the package during the initial placement of perishable products inside), while the perishable products remain inside and with the entrance of air inside (for example , during an opening of the package). The arrangement of the agent in a location close to the mouth or edge of a package can also be advantageous when a maximum display of the contents in a transparent package is desired. An activation method by means of moisture can be further controlled by providing a barrier layer material. For example, it is preferable that the body panels provide a barrier layer or that they are formed of a barrier material to create a closed environment to prevent or inhibit the introduction of moisture and the release of the active agent when the package is closed. Also, for example, the fin portions may provide a barrier layer or may be formed of a barrier material. As used herein, the terms "barrier layer" and "barrier material" include layers or materials that inhibit or otherwise control the release of an active agent within the atmosphere of the package, preferably that layers or materials that block or completely prevent this release. An example of this material is polyethylene glycol (PEG) incorporated in low density polyethylene (LDPE). Other materials that provide a barrier for the transfer of water, water vapor, oxygen, nitrogen, carbon dioxide, ethylene, volatile or non-volatile active agents include, but are not limited to, polymers, copolymers, combinations, extrusions, coextrusions, coatings, metallization or laminations of: low density polyethylene (LDPE), linear low density polyethylene (LLDPE), intermediate density linear polyethylene (LMDPE), high density polyethylene (HDPE), very low density polyethylene (VLDPE), metallocene (mPE), polypropylene (PP), oriented polypropylene (OPP), acrylonitrile-butadiene-styrene (ABS), acrylonitrile-styrene- acrylate (ASA), acrylonitrile-EPDM-styrene (AES), copolymers of ASA / AES, polyamide 6, polyamide 66 and its copolyamides, polyvinyl chloride (PVC), acrylic, polyethylene terephthalate (PBT), thermoplastic polyester (TPE) , ethylene / ethyl acrylate (EEA), ethylene / vinyl acetate (EVA), polystyrene (PS), high impact polystyrene (HIPS), modified polystyrene, ethylene vinyl alcohol (EVAL or EVOH), polyvinylidene chloride (PVDC) ), liquid crystal polymer (LCP), polyamides, polyacrylic acid (PAA), polylactic acid (PLA), polyethylene terephthalate (PET), polyethylene terephthalate glycol (PETG), saran, ceramic filled polymers, nanocomposite polymers, polychlorotrifluoroethylene (PCTFE), polymethyl methacrylate (PMMA) ), acrylonitrile-methyl acrylate (AC-MA), polyphenylene ether (PPE), polyphenylene oxide (PPO), thermoplastic elastomer, cellophane, nylon, polycarbonate (PC), modified polyolefins with barrier properties, cyclic olefin copolymers , polyacrylonitriles, acrylonitrile copolymers, polyacetals, modified polyesters, acrylic derivatives and inorganic barrier coatings. It is also contemplated that other barrier materials such as thin sheets of metal and metallized polymers such as metallized oriented polypropylene (OPP) can be used. The barrier layer is substantially impermeable to at least water vapor and active agents and, in some embodiments, also to oxygen, nitrogen and carbon dioxide or combinations thereof. In this way, the barrier layer inhibits or prevents water vapor (and, in some embodiments, oxygen, nitrogen, carbon dioxide) from entering the interior of the package, while inhibiting or preventing the active agent from escaping from the package. inside of the package. An example of a cyclic olefin copolymer that can be used in the formation of the barrier layer is TOPAS 8007MR. It is believed that useful cyclic olefin copolymers are available from several companies. For example, Ticona, a company of Celanese AG in Summit N.J. has cyclic olefin copolymers available. Other companies believed to have available cyclic olefin copolymers include Nippon Zeon (Japan), Mitsui Chemical (Japan) and JSR (Japan), formerly known as Japan Synthetic Rubber. Ticona, a company of Celanese AG, has copolymers of commercially available cyclic olefins (COCs) under the designation TOPAS * 01. It is believed that these cyclic olefin copolymers are prepared with norbornene and ethylene raw materials and the use of a metallocene catalyst. It is believed that at least four grades of TOPAS11 * resins (TOPAS 8007 ^, TOPAS 6013MR, TOPAS 6015MR and TOPAS 6017MR) are available. The four grades of the available TOPAS1 ™ 1 resins have the transition temperatures of the vitreous state, Tg, of 80, 140, 160 and 180 ° C, respectively. The corresponding levels of norbornene of the four grades of TOP S ^ resins are 35, 48, 55 and 59 mol%. It is preferred that water-soluble materials, such as PVOH, do not comprise barrier layers 42, 44 alone because these materials can dissolve in a humid environment, lose strength and / or barrier characteristics. It is contemplated that additional layers such as tie or adhesive layers may also be used in the present invention. The first portion of fin 28 containing the active agent 50 can be made of polymeric materials including thermoplastic materials.Alternatively, if formed as part of the package, a polymeric matrix layer may be provided to impregnate or support a microencapsulated active agent within a component of the package, eg, a fin portion. The matrix layer of the structure of the agent 50 can be made of polyolefin materials such as polyethylenes, polypropylenes, polystyrenes and combinations thereof. Non-limiting examples of matrix layer materials include polymers, copolymers or combinations of: low density polyethylene (LDPE), linear low density polyethylene (LLDPE), intermediate density linear polyethylene (LMDPE), high density polyethylene (HDPE), very low density polyethylene (VLDPE), metallocene (mPE), polypropylene (PP), polyamide 6, polyamide 66 and its copolyamide, polyvinyl chloride (PVC), acrylic, thermoplastic polyester (TPE), ethylene / vinyl acetate (EVA), polystyrene (PS), high impact polystyrene (HIPS), modified polystyrene, liquid crystal polymer (LCP), polyamides, polyacrylic acid (PAA), polylactic acid (PLA) , polyethylene terephthalate glycol (PETG), polymethyl methacrylate (PMMA), polyphenylene ether (PPE), thermoplastic elastomer and cellulose and filler plastics. These materials generally provide a good barrier to water vapor, but allow the permeation of oxygen and active agents. It may be desirable to have a patch, tape or sack comprising polyethylene because of its recyclability. Another example of a material that can be used to form a patch, tape or sac structures is ethyl methyl acrylate (EMA). A surface of the patch, tape or sack may be formed of a non-woven, porous material (eg, gauze) that allows the active agent such as the freshness-prolonging agent or odor control to be released.

For odor control, one of the layers of the odor control structure may further include a fragrance (e.g., a liquid fragrance), a mineral to improve the essence and / or a polymeric resin (e.g., LLDPE) . Referring still to FIG. 1, the first fin portion 28 has a length from a first fin upper portion 28c and a lower first fin portion 28d. It is contemplated that the length of the first fin portion 28 may vary as the distance between the first upper fin portion 28c and the first lower fin portion 28d increases. A first larger fin portion 28 may contain an additional active agent and may make it possible for food products or other perishable products placed in the inner space 22 to be stored for a longer period of time. Similarly, the second fin portion 34 has a length from a second upper fin portion 34c to a second lower fin portion 34d. Again, it is contemplated that the distance from the second upper fin portion 34c to the second lower fin portion 34d may vary depending on the amount of active agent that is needed in a given reclosable pack 10.

As will be understood by those of ordinary experience in the field, the amount of agent to be used in combination with a package will depend on the environment in which the agent is used, for example, the agent's loss and release rates. The release rate refers to the speed at which the agent is released inside the package and the rate of loss refers to the speed at which the agent released from the interior of the package escapes. Preferably, the agents of the present invention are arranged in amounts such that the rate of release of the agent is greater than the rate of loss of the agent during a predetermined "shelf life" or duration of use, so that the presence of the agent inside a package is replenished faster than the speed at which it is lost, thus ensuring effective agent performance. The rate of loss of the agent depends on a variety of factors related to the design, construction and use of the package. The reclosable package 10 may further include an optional breakable element. With reference to FIGS. Ib-Id, an optional breakable element 12 extending initially from the first fin portion 28 to the second fin portion 34 can be used in the packages 60, 70 and 80, respectively. The breakable element 12 of FIGURES lb-ld is represented with a preferable breakable preferred area of fragile optional use or a preferred tear area 38 to form a breakable inviolable seal feature of single use. The fragile preferred area 38 may be a dotted line, a series of perforations or a highly oriented region. Additionally, the fragile preferential area of fragile single use 38 can be made in a way to be separated by cutting through it. The brittle preferential area 38 inhibits the violation of the reclosable packet before it is opened. As shown in FIGS. Lb-ld, the location of the breakable element 12 may vary with respect to the ends of the first and second fin portions. It is not necessary for the breakable element 12 to have the preferable breakable area of single fragile use. For example, in some embodiments, the breakable element 12 includes a releasable adhesive or cohesive seal. As shown in packs 70, 80 of FIGURES lc-ld, the first fin portions 78, 86 and the second fin portions 78, 88 may contain multiple layers. Returning first to the illustrated embodiment of FIGURE 1, the first channel 72 has the first profile 26 and a first fin portion 76. The first fin portion 76 has a layer containing an active agent 62 and a barrier layer 42. The active agent can be one of the active agents mentioned previously. The barrier layer 42 inhibits at least the transfer of, but is preferably substantially impermeable to, water vapor and active agents and, in some embodiments, oxygen, nitrogen, carbon dioxide or combinations thereof. (The features 76a, 76b, 76c, 76d, 78a, 78b, 78c and 78d in FIGs. 1 and 3b and features 86a, 86b, 86c, 86d, 88a, 88b, 88c and 88d in FIGURES ld and 3c are analogous. to features 28a, 28b, 28c, 28d, 34a, 34b, 34c and 34d in FIGURE a, respectively). The second channel 74 has the second profile 32 and a second fin portion 78. The second fin portion 78 of FIGURE has a layer containing an active agent 64 and a barrier layer 44. The active agent 64 may be one of the previously mentioned active agents. The barrier layer 44 inhibits at least the transfer of, but is preferably substantially impermeable to, water vapor and active agents and, in some embodiments, oxygen, nitrogen, carbon dioxide or combinations thereof. In the embodiment shown in FIGURE 1, the active agent layer 62 is closer to the interior space 22. It is also contemplated that the barrier layer 42 may be located closer to the interior space 22. Similarly, the layer with agent active 64 is closer to the inner space 22. It is also contemplated that the barrier layer 44 may be located closer to the inner space 22. With reference to FIGURE 1d, the first channel 82 has the first profile 26 and a first portion of flap 86. The first flap portion 86 comprises the active agent-containing layer 62, the barrier layer 42 and a diffusion layer 66. The active agent may be one of the previously mentioned active agents. The barrier layer 42 inhibits at least the transfer of, but is preferably substantially impermeable to, water vapor and active agents and, in some embodiments, oxygen, nitrogen, carbon dioxide or combinations thereof. The diffusion layer 66 is located on the opposite side of the layer with the active agent 62 as the barrier layer 42. The second channel 84 has the second profile 32 and a second fin portion 88. The second fin portion 88 of FIGURE 1 d has the active agent-containing layer 64, the barrier layer 44 and a diffusion layer 68. The active agent can be one of the previously mentioned active agents. The barrier layer 44 inhibits at least the transfer of, but is preferably substantially impermeable to, water vapor and active agents and, in some embodiments, oxygen, nitrogen, carbon dioxide or combinations thereof. The barrier layer 44 may comprise one of the barrier materials mentioned previously. The diffusion layer 68 is located on the opposite side of the layer with the active agent 64 as the barrier layer 44. The diffusion layers 66, 68 of the first and second respective fin portions 86, 88 can be manufactured from a suitable material that allows the active agent to reach the inside of the package that can be closed again relatively quickly. In this way, materials that provide permeation of water, water vapor, oxygen, nitrogen, carbon dioxide, ethylene, volatile active agents or non-volatile active agents can be used for the diffusion layer. Examples of the diffusion layers include polymers, copolymers, combinations, extrusions, co-extrusions, coatings or laminations of: low density polyethylene (LDPE), linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE). , metallocene (mPE), polypropylene (PP), acrylonitrile-butadiene-styrene (ABS), polyamide 6, polyamide 66 and its copolyamides, polyvinyl chloride (PVC), acrylic, polybutylene terephthalate (PBT), thermoplastic polyester (TPE), ethylene / ethyl acrylate (EEA), ethylene / vinyl acetate (EVA), polystyrene (PS), high impact polystyrene (HIPS), modified polystyrene, ethylene-vinyl alcohol (EVAL or EVOH), polyacrylic acid (PAA), polylactic acid (PLA), filled polymers, hydrophilic nanocomposite polymers, polymethyl methacrylate (PMMA), thermoplastic elastomers, polydimethylsiloxane (PDMS), polymethylpentene (PMP) ), polyvinyl acetate (PVA), polyvinyl alcohol (PVAL) and cellulose acetate (CA). As will be understood by those of ordinary experience in the field, the same type of polymeric material can be used in the formation of either the matrix, barrier or diffusion layer, depending on the ratio in percentage of the material in the composition of the layer, the amount of material in the composition of the layer (for example, the thickness of the composition of the layer) and / or the manufacturing method. In this way, the use of a polymeric material, particular as a component for the matrix, barrier or diffusion layer depends on its quantity and form of use. The diffusion layers 66, 68 help to control the amount of active agent that is in communication with the interior space 22. In particular, the diffusion layer controls the amount of active agent released inside the package such that the amount that enters the interior of the package is equal to or greater than the amount lost outside the package. In this way, the control of the quantity of active agent that is in communication with the interior space improves the shelf life period prior to the use of food products, perishable products or other contents in the package that can be closed again when ensuring the continued presence of an adequate amount of the active agent within the package. The diffusion layer also serves to ensure the proper release rate of the active agent when the reclosable pack is in use. In the embodiment shown in FIGURE 1d, the diffusion layer 66 is closer to the interior space 22. It is also contemplated that the barrier layer 42 may be located closer to the interior space 22. Similarly, the diffusion layer 68 It is closer to the interior space 22. It is also contemplated that the barrier layer 44 may be located closer to the interior space 22. The channels, profiles, fin portions and a single-use breakable element typically comprise one or more polymeric resins. . Channels, profiles, fin portions and rupturable element of single use may be independently comprised of one or more polyolefins including, but not limited to, polyethylenes, polypropylenes or combinations thereof. Some non-limiting types of polyethylenes include low density polyethylenes (LDPE), linear low density polyethylenes (LLDPE), high density polyethylenes (HDPE), intermediate density polyethylenes (MDPE) and combinations thereof. Other non-limiting examples include plastomers, elastomers, ethylene vinyl acetates (EVA), ethyl methacrylates, polymethylpentene copolymers, polyisobutylenes, polyolefin ionomers, cyclic olefin copolymers (COCs) or combinations thereof, including with polyethylenes and / or or polypropylenes. One or more of the channels, profiles, fin portions and / or rupturable element of single use can be manufactured in multiple layers. The multiple layers of the channels, profiles, fin portions and rupturable element of single use can be formed independently by means of coextrusion or other processes such as coating or lamination. The opposing films that form the opposed body panels 16, 18 of the polymeric package can be made of one or more polymeric resins. The opposite body panels 16, 18 may be comprised of one or more polyolefins including, but not limited to, polyethylenes, polypropylenes or combinations thereof. Some non-limiting types of polyethylenes include low density polyethylenes (LDPE), linear low density polyethylenes (LLDPE), high density polyethylenes (HDPE), intermediate density polyethylenes (MDPE) and combinations thereof. Other non-limiting examples include plastomers, elastomers, ethylene vinyl acetates (EVA), ethyl methacrylates, polymethylpentene copolymers, polyisobutylenes, polyolefin ionomers, cyclic olefin copolymers (COCs) or combinations thereof, including with polyethylenes and / or or polypropylenes. In addition, the opposed body panels 16, 18 of the present invention can be made of multiple layers including those layers joined by means of coextrusion or other processes such as coating or lamination. In addition, it is possible to incorporate pigments, metallic components, paper and / or paper / plastic composite materials into or onto the layer (s) of the polymeric bags of the present invention. The optional slide mechanism 36 can be formed of suitable polymeric materials such as, for example, nylon, polypropylene, polyethylene, polystyrene, polyethylene and polypropylene copolymers, polycarbonates, polyesters, polyacetals or copolymers of acrylic butadiene-styrene. Especially preferred components for manufacturing the slide mechanism 36 are polypropylenes, polycarbonates or polystyrenes. The sliding mechanism 36 can be formed by means of injection molding. Similarly, opposite body panels 16, 18 (as depicted in FIGS. 1-Id, 3a-3c) can form a barrier layer that is substantially impermeable to at least water vapor and active agents and, in some embodiments, also oxygen, nitrogen, carbon dioxide or combinations thereof. The opposed body panels 16, 18 can thus include similar materials as described above in the formation of the barrier layers of the fin portion 42, 44. The opposing body panels 16, 18 can provide a barrier layer located on an outer or inner surface of the packages. The opposed body panels 16, 18 can be manufactured in multiple layers. For example, opposing body panels 16, 18 may include a tie layer that attaches to the fin portions. The tie layer can be made of various materials such as ethylene-vinyl acetate ((EVA), polyolefins modified with anhydrides, ethylene-acrylates modified with anhydrides, EVAs modified with anhydrides, acid-modified EVAs, acid-modified ethylene-acrylates , EVA polymers modified with amorphous polyolefins or combinations thereof Examples of polyolefins modified with anhydrides include high density polyethylene modified with anhydrides (HDPE), modified low density polyethylene with anhydrides (LDPE) and modified linear low density polyethylene. with anhydrides (LLDPE) An example of a three layer body panel (not shown) includes a first layer having the same materials as described above in the manufacture of the barrier layers of the fin portion 42, 44, a tie layer and a third layer made of polyolefin (s), such as a LDPE, HDPE, LLDPE or combinations thereof. In this embodiment, the first layer would preferably be located on the inside of the body panel with the tie layer located between the first and third layers. These body panels would be used in a manner similar to the body panels 16, 18 described above. The components of the reclosable closure arrangement (such as channels having integrally formed immobilization profiles and fin portions) can be attached to the package body panels by means of processes such as heat sealing, welding (for example, ultrasonic welding) or blocking. The process used depends on the materials from which the bag is made and the closure order that can be closed again. Specifically, thermal sealing is a process in. which materials are fused or fused together. Welding is a process where a third intermediate material is used to "gum up" similar materials together. Blocking is a process where at least sufficient pressure and optional temperature increases result in an adhesion by contact of intimate surfaces of the unsealed layers. The fin portions may be joined differently with respect to the body panels that are depicted in FIGS. 1-Id. With reference to Figures 3a-3c, the mouth portions of the reclosable packets 110, 120, 130 are shown including the pair of first and second opposing body or wall panels 16, 18 that make up the body of the package and define an interior space 122. With reference to FIGURE 3a, connected to the first body panel 16 is the first channel 24 having the first profile 26 and the first fin portion 28 extending generally downward from the first profile 26. The first body panel 16 includes the outer surface 16a and the inner surface 16b. The first fin portion 28 has the outer surface 28a and the inner surface 28b. Connected to the second body panel 18 is the second channel 30 having the second profile 32 and the second fin portion 34 which extends generally downwardly from the second profile 32. The second body panel 18 has the outer surface 18a and the surface interior 18b. The second fin portion 34 has the outer surface 34a and the inner surface 34b. The outer surface 16a is attached to the inner surface 28b. The outer surface 18a is attached to the inner surface 34b. The first and second profiles 26, 32 are releasably engageable with each other to provide a reclosable seal for the package 110. In the illustrated embodiment of FIGURE 3a, the first flap portion 28 includes the active agent 50. More specifically, the active agent 50 can be one of the active agents mentioned previously. The second portion of fin 34 has the active agent 52. More specifically, the active agent 52 may be one of the above-mentioned agents for freshness prolongation. The active agent 50 can be extruded with the first fin portion 28. The first fin portion 28 can be impregnated with an active agent 50. It is also contemplated that the active agent 50 can be sprayed, brushed, coated, rolled or coated. stamped on the first fin portion 28.

Similarly, the active agent 52 can be extruded with the second fin portion 34. The second fin portion 34 can be impregnated with the active agent 52. It is also contemplated that the active agent 52 can be sprayed, applied by brush, coated, laminated or stamped on the second fin portion 34. As shown in FIGURES 3b-3c, the first and second fin portions may contain multiple layers. Returning first to the illustrated embodiment of FIGURE 3b, the reclosable pack 120 includes the first channel 72 and the second channel 74. The first channel 72 includes the first profile 26 and the first fin portion 76. The first portion of flap 76 has layer 62 which contains an active agent and barrier layer 42. The active agent may be one of the above-mentioned active agents. The barrier layer 42 is preferably substantially impermeable to water vapor and active agents and, in some embodiments, to oxygen, nitrogen, carbon dioxide or combinations thereof. The second channel 74 includes the second profile 32 and the second fin portion 78. The second fin portion 78 of FIGURE 3b has the layer containing an active agent 64 and the barrier layer 44. The active agent may be one of the active agents mentioned previously. The barrier layer 44 is preferably substantially impervious to water vapor and active agents and, in some embodiments, to oxygen, nitrogen, carbon dioxide or combinations thereof. In the embodiment shown in FIGURE 3b, the active agent layer 62 is closer to the inner space 122. It is also contemplated that the barrier layer 42 could be located closer to the inner space 122. Similarly, the layer with agent active 64 is closer to inner space 122. It is also contemplated that barrier layer 44 could be located closer to inner space 122. The reclosable package 120 of FIGURE 3b is shown with a breakable element of use. single, optional 112. The single-use breakable element 112 is designed to serve the same purpose of the single-use breakable element. 12 of FIGURES lb-ld. With reference to FIGURE 3c, a reclosable pack 130 is shown with the first channel 82 and the second channel 84. The first channel 82 has the first profile 26 and the first fin portion 86. The first portion Flap 86 comprises the active agent-containing layer 62, the barrier layer 42 and the diffusion layer 66. The active agent may be one of the previously mentioned active agents. The barrier layer 62 is preferably substantially impervious to water vapor and active agents and, in some embodiments, to oxygen, nitrogen, carbon dioxide or combinations thereof. The barrier layer 42 may comprise one of the barrier materials mentioned previously. The diffusion layer 66 may comprise one of the diffusion layer materials mentioned previously. The diffusion layer helps to control the amount of active agent that is in communication with the inner space 122. The diffusion layer 66 is located on the opposite side of the active agent layer 62 as the barrier layer 42. The control of the quantity of active agent that is in communication with the interior space improves the shelf life period prior to the use of the food products, perishable products or other content in the package that can be reclosed. The diffusion layer also serves to ensure the proper release rate of the active agent when the reclosable pack is in use. The second channel 84 having the second profile 32 and the second fin portion 88 is also shown in FIGURE 3c. The second fin portion 88 of FIGURE 3c has the layer containing an active agent 64, the barrier layer 44 and the diffusion layer 68. The active agent may include one of the previously mentioned active agents. The barrier layer 44 is preferably substantially impervious to water vapor and active agents and, in some embodiments, to oxygen, nitrogen, carbon dioxide or combinations thereof. The barrier layer 44 may comprise one of the barrier materials mentioned previously. The diffusion layer 68 may comprise one of the diffusion layer materials mentioned previously. The diffusion layer assists in controlling the amount of the active agent that is in communication with the inner space 122. The diffusion layer 68 is located on the opposite side of the active agent-containing layer 64 as the barrier layer 44. The control of the quantity of active agent that is in communication with the interior space improves the shelf life period prior to the use of the food products, perishable products or other content in the package that can be reclosed. The diffusion layer also serves to ensure the proper release rate of the active agent when the reclosable pack is in use. In the embodiment shown in FIGURE 3c, the diffusion layer 66 is closer to the interior space 122. It is also contemplated that the barrier layer 42 may be located closer to the interior space 122. Similarly, the diffusion layer 68 is closer to the inner space 122. It is also contemplated that the barrier layer 44 may be located closer to the inner space 122. Alternatively, an adhesive seal may be used as a resilient or re-closing element or fastener. present invention. These seals employ a resealable adhesive type substance that is applied to either or both films that make up the package. The adhesive can alternatively be applied to an intermediate base strip. It is contemplated that other closure arrangements, in addition to the adhesive seals and zippers, may be used in the embodiments of the present invention. The reclosable packages 10 and 110 shown in FIGURES la and 3a can be used for the consumer to store food products or other perishable products., such as leftover food products. During a method of operation of the reclosable pack 10, one or more food products or perishable products are placed inside the package 22 and the fastener 14 is placed in a closed position. The level of moisture or wetting present in the food products activates the agent for the prolongation of freshness 50 or 52 as the products travel in the vicinity of the active agent and while the products remain disposed in the interior, thereby inhibiting the decomposition of food products. The opening of the package 10, ie the placement of the reclosable fastener 14 in an open position, also activates the agent 50 or 52 by allowing air to enter the interior 22. As shown in FIGS. , 3b and 3c, the reclosable packages 60, 120 and 70, 130 differ with respect to the placement of the active agents in relation to the breakable elements. For example, the active agents 50, 52 in the package 60 of FIGURE Ib are disposed on the breakable element 12 and, therefore, separated from the interior prior to use, while the active agents 62, 64 in the package 70 are disposed above and below the breakable element 12. Generally, the active agents in a package may be disposed on, above and below, or below the single-use breakable element. Packages with breakable elements can be used for the consumer to store food products or other perishable products. During a method of operation of the reclosable packages 60 or 70, the breakable elements 12 are broken, the perishable products are placed inside the packages 22 and 70 and the packages 60 and 70 are sealed again along the frangible elements 12 and closed along the fasteners 14. If the agents for the extension of freshness are arranged on the breakable element, similar to the reclosable pack 60, the agents for the prolongation of freshness can be activated with the travel of food products in the vicinity of the agent (for example, through the mouth of the package during the initial placement of perishable products inside) and with the entry of air into the interior ( for example, during an opening or reopening of the package). If the agents for prolonging the freshness are arranged above and below the breakable element, similar to the resealable package 70, the agents for the extension of freshness can be activated with the travel of the food products in neighborhood of the agent, while the food products remain arranged inside and with the entry of air into the interior. Generally, a package with a freshening agent disposed below a breakable element is preferred for consumer use, because the agent is not exposed to the air until the package is opened, thereby increasing the shelf life of the agent. Packages with breakable elements are also suitable for different types of commercial operations for food packaging with forming, filling and sealing ("FFS operations"). These packages can be used in different types of FFS operations depending on the placement of the agents for the extension of freshness in relation to the breakable elements. A package with an agent for freshness extension disposed on a single-use breakable element is suitable for FFS operations in which the interior of a package with food products is substantially evacuated during the closing of the package via the breakable element of use. only. Since the food products are disposed in an evacuated environment, the decomposition is inhibited inside the package before the rupture of the single-use breakable element. Nevertheless, once opened, the agent for the prolongation of the freshness inhibits the decomposition, avoiding consequently an agent for the prolongation of the freshness under the breakable element of single use. In contrast, a package with a freshness agent disposed under or over and under a single-use breakable element is suitable for FFS operations in which the interior of a package containing food products is either not evacuated or is only partially evacuated during the closing of the package via the single-use breakable element. The freshness-prolonging agent disposed under the single-use breakable element can inhibit the decomposition of the food products disposed within the package and thereby improving the shelf-life period. This arrangement of the agent for the prolongation of the freshness and the breakable element of single use is suitable for food products known to have higher decomposition rates, such as cheese. Generally, a package with a freshness extension agent disposed on a breakable element is preferred for commercial operations in which the food products are disposed in evacuated packages, because the agent is not used until the package is opened. The packages can be formed of any suitable material, such as by means of a thermoplastic material which is suitable for storing or collecting articles, including for storing perishable products. Of course, this includes resealable packages of common sizes such as 0.473 liter (one pint) storage and freezer bags, 1/4 gallon storage and freezer bags, and storage bags. freeze of 3,785 liters (1 gallon). The reclosable packages are typically formed of polymeric materials such as polyolefin materials. Non-limiting examples of polyolefin materials include polyethylenes, polypropylenes, polystyrene and combinations thereof. For example, some types of polyethylene materials include high density polyethylenes (HDPE), low density polyethylenes (LDPE), linear low density polyethylenes (LLDPE) and combinations thereof. It is also contemplated that materials such as plastomers, elastomers, ethylene vinyl acetates (EVA), ethyl methacrylates, polymethylpentene copolymers, polyisobutylenes, polyolefin ionomers, cyclic olefin copolymers (COCs) or combinations thereof, including polyethylenes and / or polypropylenes can be used in the formation of the reclosable packets of the present invention. The thicknesses of the reclosable packets may vary in the present invention, but are generally from about 12.7 microns to about 127 microns (approximately 0.5 mil to about 5 mil) and, more specifically, approximately 25.4 microns to approximately 76.2 microns (from approximately 1 mil to approximately 3 mil). As previously described herein, the active agents of the present invention can be used in combination with flap portions of a resilient pack fastener. Alternatively and / or in combination, the active agents of the present invention may be used in combination with a reclosable pack body panel, as described further in co-pending US Patent Application No. [Registration of Attorney No. 086012-38700-USPT], the contents of this application are expressly incorporated by reference in this document in its entirety. It is contemplated that additional or alternative layers may be used in the formation of the reclosable packets shown and described in this document. For example, a layer to increase the freshness prolongation may be added or incorporated into a body panel instead of or in addition to the use in the fin portion. A layer to increase the prolongation of the freshness can improve the supply of an agent for the prolongation of the freshness with the increase of the humidity. The increase in moisture frequently results in a corresponding increase in the growth of bacteria which results in increased decomposition of the food. An example of a layer to increase the prolongation of freshness is polyvinyl alcohol (PVOH). While the packages described with active agents have been shown and described with reference to the illustrated modalities, those of ordinary experience in the field will recognize and / or be able to discover many equivalents for those modalities. These equivalents are included by the scope of the present description and the appended claims. For example, those of ordinary skill in the field will understand that the present invention has applications in various types of packages and packages, including bags and wraps that can not be resealed, rigid containers such as rigid waste containers, plastic containers. and lunch boxes and packaging and thin sheets of metal for food packaging. Similarly, those of ordinary skill in the field will understand that the present invention has applications for agents other than agents for freshness extension, such as odor control agents and other agents that provide a desired function or effect on a package or the contents arranged in it.

Unless provided otherwise, when the articles "a" or "an" are used in this document to modify a noun, it may be understood that they include one or more than one of the modified noun.

Claims

1. A reclosable package, characterized in that it comprises: a pair of opposed body panels that are joined along a pair of opposite sides and a bottom connecting the sides, the body panels define a mouth opposite the bottom; a reclosable fastener which extends along the mouth and includes a pair of polymeric channels, each of the channels including a connecting element and a fin portion, the joining elements are dockable releasably with each other, each of the fin portions extends generally downwardly of the reclosable element towards the bottom of the reclosable pack; and an active agent associated with at least one of the fin portions for communication with the interior of the reclosable package.

2. The reclosable pack according to claim 1, characterized in that the active agent is applied to at least one of the fin portions by at least one of application by brush, coating, impregnation, rolling, spraying and stamping of the active agent on at least one of the fin portions.

3. The reclosable packet according to claim 1, characterized in that the active agent is extruded with at least one of the fin portions.

4. The reclosable pack according to claim 3, characterized in that the active agent is distributed in the form of microcapsules in at least one of the fin portions.

5. The resealable package according to claim 1, characterized in that the active agent is included in a layer of active agent bound to at least one of the fin portions via at least one adhesive, a co -Extrusion, a thermal seal and a solder.

The reclosable pack according to claim 1, characterized in that the active agent is included in at least one of a coating, patch, bag and tape applied to at least one of the fin portions.

The reclosable packet according to claim 1, characterized in that it further comprises: a structure for selectively initiating the release of the active agent.

8. The reclosable package according to claim 1, characterized in that the active agent is activated by moisture.

9. The reclosable packet according to claim 1, characterized in that the active agent is an agent for the prolongation of freshness that includes an isothiocyanate compound.

10. The reclosable packet according to claim 9, characterized in that the agent for the prolongation of freshness also includes an acid.

11. The reclosable package according to claim 9, characterized in that the agent for the prolongation of freshness also includes a fragrance.

12. The reclosable package according to claim 1, characterized in that it further comprises: a rupturable element of single use that extends between the fin portions and is disposed between the interior and the fastener that can be returned to close.

13. The reclosable package according to claim 12, characterized in that the active agent is disposed on the single-use breakable element.

14. The resealable package according to claim 12, characterized in that the active agent is disposed below the rupturable element for single use.

15. The reclosable packet according to claim 1, characterized in that it further comprises: a barrier layer associated with at least one of the body panels to define a barrier environment for the interior.

16. The reclosable packet according to claim 1, wherein the active agent is included in an active agent layer, the reclosable package is characterized in that it further comprises: a barrier layer associated with at least one of the fin portions.

17. The reclosable packet according to claim 16, characterized in that the active agent layer is located closer to the interior than the barrier layer.

18. The reclosable packet according to claim 1, characterized in that it further comprises: a diffusion layer associated with at least one of the fin portions, the diffusion layer is adjacent to a layer of active agent that includes the active agent.

19. The reclosable packet according to claim 18, characterized in that the diffusion layer is located closer to the interior than the active agent layer.

20. A reclosable package, characterized in that it comprises: a first opposed body panel having an inner surface and an outer surface; a second opposed body panel having an inner sur and an outer sur, the first and second body panels are joined along a pair of opposite sides and a bottom connecting the sides to form an open mouth at one end, the first and second body panels that are joined form an interior space; and a reclosable polymer seal which extends along one end of the respective inner surs of the first and second opposing body panels, the reclosable polymer seal includes a first polymer channel and a second polymer channel, the first polymer channel including a first fin portion and a first attachment element, the first fin portion extending generally downward from the first reclosable element towards the bottom, the first portion of fin having at least one first layer having an active agent and a second layer which is a barrier layer, the second polymeric channel including a second fin portion and a second attachment element, the second fin portion being extended generally down the second reclosable element towards the bottom, the second fin portion having at least one third layer having a active agent and a fourth layer which is a barrier layer, the first joining element and the second joining element are releasably engageable with each other.