JP2007522039A - Reclosable package with activator - Google Patents

Abstract

A package with an active agent is disclosed. In general, each disclosed package (10) has a mouth on the opposite side of the bottom along a pair of opposing sides and a bottom that bridges the sides. It has a pair of opposed panels (16, 18) connected together, a reclosable fastener (14) extending along the mouth, and an active agent (50, 52). The reclosable fastener (14) includes a pair of polymer tracks (24, 30), each track including an interlocking element (26, 32) and a fin portion (28, 30). The meshing elements (26, 32) can be releasably engaged with each other, and each fin portion (28, 30) is attached to the bottom of the reclosable package (10) from each meshing element (26, 32). It extends downwards. The active agent (50, 52) is associated with at least one of the fin portions (28, 30) so as to communicate with the interior (22) of the reclosable package (10).
[Selection] Figure 1a

Description

  The present invention relates to packages and structures and methods for releasing active agents within such packages. More specifically, the present invention extends the freshness of perishable products with active agents such as freshness extenders, odor control agents, and other functional agents and is in such packages. It relates to structures and methods for releasing such active agents in order to manage or control the odor associated with such products.

  Recloseable packages such as food containers with lids or hinges attached, and bags with pushers or slider fasteners to close are pre-packaged perishable product suppliers And for consumers, especially in the case of products such as luncheon meats and cheeses that normally only use part of the product at any one time. The reclosable package is particularly convenient for use at home to store the remaining perishable products. However, the problem with these reclosable packages is that the package does not include any function that acts to extend the period during which perishables can be stored in the package and kept fresh. It is. Thus, the contents of the package are quickly damaged and if they are damaged, the contents are no longer suitable for human consumption. The cost of damaging perishable items is a significant problem for both consumer and commercial users of reclosable packages.

  One attempt to address the problem of damaging perishables involves the use of a layered tear resistant seal that is substantially impermeable to oxygen. In this type of system, the seal is broken when the package is first opened and does not prevent further damage to perishable items. This type of system, therefore, helps the user in the home to put the perishable product left over into a storage bag, only dealing with the problem of perishable items being damaged by the time the package is first opened. Can't stand.

There is a need for a package that has the ability to prevent damage to perishable items.
US Pat. No. 5,067,208 US Pat. No. 6,147,588 US Patent Application No. 2004/0066985 US Pat. No. 6,042,586 US Pat. No. 6,257,401 US Pat. No. 6,349,857 US Pat. No. 6,644,494 US Pat. No. 6,845,878 US Patent Application No. 2004/0074902 US Patent Application No. 2005/000066 US Patent Application No. 2003/0223657 US patent application (patent attorney case number 086012-38700-USPT)

A package with an active agent is disclosed below.
In general, each package disclosed in the present invention is integrally connected along a pair of opposite sides and a bottom that bridges the sides and defines a mouth on the opposite side of the bottom. A pair of opposing body panels, a reclosable fastener extending along the mouth, and an activator. The reclosable fastener includes a pair of polymer tracks, each track including an interlocking element and a fin portion. The meshing elements can be releasably engaged with each other. Each fin portion extends generally downwardly from each mating element toward the bottom of the reclosable package.

  In accordance with certain aspects of the present invention, the reclosable package is provided with a freshness extender that is associated with at least one fin portion for communication with the interior of the package. . The activator is affixed to the at least one fin portion by brushing and soaking the activator in at least one fin portion and performing at least one of spraying, coating, and embossing. Alternatively, the active agent is extruded with the at least one fin portion. For example, the active agent is distributed in at least one fin portion in the form of microcapsules. Alternatively, the activator is included in an activator layer attached to at least one fin portion by at least one of adhesive, coextrusion, heat sealing, and welding (eg, ultrasonic welding). Yes. Alternatively, the active agent is included in at least one of a coating, patch, pouch and tape applied to at least one fin portion.

According to another aspect of the invention, the activator is a freshness extender comprising an isothiocyanate compound. The freshness extender may further contain an acid and / or a fragrance.
According to another aspect of the invention, a structure is provided that selectively initiates the release of the active agent. Alternatively, the active agent is released by moisture.

  According to another aspect of the invention, a one-time breakable element extends between the fin portions and is disposed between the interior and the reclosable fastener. The active agent can be placed above and / or below the breakable element once.

According to another aspect of the invention, a barrier layer associated with at least one body panel is provided to define a barrier environment relative to the interior.
In accordance with another aspect of the invention, a barrier layer associated with at least one fin portion is provided. The barrier layer is disposed further from the inside than the active agent layer containing the active agent.

  According to another aspect of the invention, a diffusion layer associated with at least one fin portion is provided. The diffusion layer is adjacent to the active agent layer containing the active agent. The diffusion layer is disposed closer to the inside than the active agent layer.

  In accordance with another aspect of the present invention, a reclosable package includes a first opposing body panel having an inner surface and an outer surface, and a second opposing body panel having an inner surface and an outer surface; A reclosable polymer seal is provided. The first and second main body panels are integrally connected along a pair of opposite side sides and a bottom portion that bridges the side sides, and an open mouth portion is formed at one end. Both connected main body panels form an internal space. A reclosable polymer seal extends along the one end of the inner surface of each of the first and second opposing body panels and includes first and second polymer tracks. The first polymer track includes a first mating element and a first fin portion, the first fin portion extending generally downwardly from the first mating element toward the bottom of the package. The second polymer track includes a second meshing element and a second fin portion that extends generally downwardly from the second meshing element toward the bottom of the package. The first and second meshing elements can be releasably engaged with each other. The first fin portion includes at least a first layer having an active agent and a second layer that is a blocking layer. The second fin portion includes at least a third layer having an active agent and a fourth layer which is a blocking layer.

  These and other features of the disclosed package of the present invention will be more fully understood with reference to the following detailed description and accompanying drawings. The drawings are not drawn to scale, but only show relative dimensions.

  The present invention relates to packages, packaging materials and other related structures in which an active agent is incorporated. Accordingly, the present invention provides for reclosable plastic bags, garbage bags and liners, hard waste containers, airtight containers, lunch boxes, and packaging wraps and foils that are widely used in perishable packaging or perishable covers. It has applications for various flexible and rigid containers and packages.

  The term “package” as used herein includes all types of packages or containers, such as flexible plastic bags and rigid containers, as well as foils or wraps that are widely used to package or store perishable items. I want you to understand.

  As used herein, the term “active agent” should be understood to include any agent, ingredient, or composition that provides a strengthening or beneficial effect within a package or container. The active agent is a “freshness-extending” agent to extend the freshness or shelf life of food or other perishable items stored in the package, or block, neutralize, and / or reduce odors from the package "Odor control" agent for use, or other functional agents.

  Each active agent of the present invention is used in combination with a package. Specifically, each freshness extender of the present invention is used to suppress damage to food or other perishable items in the package, and each odor control agent of the present invention reduces odor from the package. Used to reduce, neutralize and / or block. Each active agent of the present invention is disposed within the environment of the package, for example, in the form of a coating, patch, pouch, and tape affixed to the package component and extruded with the package component. Sprayed, brushed, coated, laminated or embossed onto the package component, impregnated into the package component, and / or distributed within the package component material, eg, in microcapsule form .

  For ease of understanding, but not limitation, the freshness extender of the present invention can be placed in the environment of a polymer bag for storing perishable items. Polymer bags are intended for applications such as packaging operations where consumers store food (eg, leftover food) or “form, pack and seal” food. Polymer bags include non-recloseable polymer bags and recloseable polymer bags. Resealable polymer bags are usually made reclosable by reclosable elements or fasteners such as resealable adhesives or adhesive seals, welds (eg, ultrasonic welds), mating tracks and mating recesses. ing. The meshing track can be opened and closed by applying pressure with a finger or by using an auxiliary device such as a slider. Examples of reclosable polymer bags include those disclosed in US Pat. Nos. 5,067,208 and 6,147,588, and US Patent Application Publication No. 2004/0066985. The entire contents of this document are incorporated herein by reference.

  Furthermore, for purposes of clarity and not limitation, the freshness extenders of the present invention are such as bakery containers, cooked food containers, fruit containers, lunch boxes, and roaster containers, It can also be placed in a hard package environment for storing perishable items. Examples of containers include U.S. Patent Nos. 6,042,586, 6,257,401, 6,349,857, 6,644,494, 6,845,878, and U.S. Patents. The containers disclosed in application Nos. 2004/0074902 and 2005/0000966 are included, the entire contents of these documents are hereby incorporated by reference.

  Furthermore, for purposes of clarity and not limitation, the odor control agents of the present invention may be used in bags and liners for collecting garbage or waste, and items that produce undesirable odors such as laundry and diapers. Can be used in other container environments for collecting. Such waste bags include a knot mechanism that helps to close the bag or liner securely, form a handle for carrying the bag or liner to be discarded, and / or facilitate opening of the bag or liner. It is out. Examples of waste bags include the bags disclosed in US Patent Application No. 2003/0223657, the entire contents of which are incorporated herein by reference.

  Illustrative embodiments are described below for a general understanding of the disclosed package and the related structures and active agents. For purposes of clarity and not limitation, the package of the present invention will be described with reference to a reclosable polymer bag. One or more examples of empirical embodiments are shown in the drawings. As those skilled in the art will appreciate, each of the disclosed bags with active agents is adapted to provide alternative embodiments of bags, containers and other packages with active agents for other applications. Other additions and modifications can be made to the disclosed packages and active agents without departing from the scope of the present disclosure. For example, the mechanisms of each empirical embodiment can be combined, separated, replaced, and / or rearranged to create other embodiments. Such modifications and changes are intended to be included within the scope of the present disclosure.

  FIG. 1 a shows the mouth defined by a package or bag 10 with a reclosable closure device such as a fastener or zipper 14. The fastener or zipper 14 can be opened and closed by applying finger pressure or by using an auxiliary squeezing device such as a slider. 1b-1d show another mouth defined by a reclosable package or bag with a fastener or zipper. FIG. 2 shows the reclosable package 70 with the mouth portion shown in FIG. 1b partially open.

  As shown in FIG. 1 a, the mouth of the reclosable package 10 forms a package body 20 (FIG. 2) and a pair of first and second opposing body or wall panels 16 that define an interior space 22. , 18 are included. Connected to the first body panel 16 is a first track 24 having a first shape portion 26 and a first fin portion 28 extending generally downward from the first shape portion 26. The first main 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. A second track 30 having a second shape portion 32 and a second fin portion 34 extending generally downward from the second shape portion 32 is connected to the second main body panel 18. The second body panel 18 has an outer surface 18a and an inner surface 18b. The second fin portion 34 has an outer surface 34a and an inner surface 34b. Inner surface 16b is attached to outer surface 28a. Inner surface 18b is attached to outer surface 34a. The first and second shaped portions 26, 32 can be releasably engaged with each other to form a reclosable seal on the package 10. The thickness of the first and second fin portions 28, 34 generally varies from about 2 to about 10 mils. More specifically, the thickness varies from about 4 to about 7 mils.

  The reclosable package of FIGS. 1a-1d further includes an optional auxiliary slider mechanism 36 (FIG. 2) that is slidably attached to the fastener 14 for movement between a closed position and an open position. In FIGS. 1a-1d and 2, the first and second shape portions 26, 32 are engaged with each other when the slider mechanism 36 is in the closed position, and the slider mechanism 36 is moved from the closed position to the open position. The shape portions 26, 32 are disengaged from each other.

  The package 70 of FIG. 2 further includes an end portion 37. The terminations (a) prevent or prevent the slider mechanism 36 from passing through the end of the fastener 14, (b) provide a tactile feel that interacts with the slider 36 and is closed (c) from the package 70 Assists in preventing or preventing leakage; (d) holding the first and second shape portions 26, 32 together and resisting stresses on the shape portions 26, 32 during normal use of the package 10; It has various purposes such as providing additional strength. For details on the structure and operation of the slider mechanism 36 and the terminal portion 37, see Herington. U.S. Pat. No. 5,067,208 to Jr et al., Which is hereby incorporated by reference in its entirety.

  It is also conceivable to use another terminal portion instead of the terminal portion 37. For example, the end may be welded by pressing a hot bar against the end of the fastener, ultrasonic welding, or other methods known in the art.

  As shown in FIGS. 1 a-1 d and FIG. 2, the reclosable package is such that the consumer grasps the slider mechanism 36 and the first and second features of the first and second tracks 24, 30 respectively. 26, 32 are opened by moving them away from each other. The consumer then breaks open the optional breakable element 12 (if any) along the preferred weak body region 38. Alternatively, the consumer may open the breakable element 12 by cutting the breakable element. The package can be resealed using the fastener 14 and slider mechanism 36. Specifically, the consumer grasps the slider mechanism 36 and moves it from the open position to the closed position to engage the complementary first and second shape portions 26 and 32.

  The one-time breakable element 12 not only assures the consumer that a newly purchased package has not been previously opened, but the food, perishable or other content of the package until it is first opened. It provides a good initial seal that preserves the freshness of the product and can prevent or prevent activation of the active agent by conditions that trigger activation such as moisture. Since the reclosable closure device of FIGS. 1b-1d is located above the one-time breakable element (ie, the reclosable closure device is on the side far from the interior space), it can be reclosed. The operation of such a closure device is not hindered by the presence of a one-time breakable element.

  Activators 50 and 52 are associated with the first fin portion 28 and the second fin portion 34, respectively. The activators 50 and 52 may be the same or different. Each active agent 50, 52 includes a material known to provide a desired function or effect to the package or its contents. In some embodiments, the active agent includes a freshness extender that serves to extend the life or freshness of food or other perishable items contained in the package. In another embodiment, the active agent includes an odor management agent that serves to mask, neutralize and / or reduce undesirable odors or create an aromatic odor in the package.

  The drug 50 is incorporated in or on the fin portion 28. In certain embodiments, the drug 50 is extruded with the first fin portion 28 or impregnated into the first fin portion 28. For example, the medicament 50 is distributed in the form of microcapsules in the material of the first fin portion 28. In certain preferred embodiments, the active agent is microencapsulated prior to being incorporated into the package structure. Microencapsulation refers to an active agent within a polymeric material that withstands heat during packaging and manufacturing, but that degrades, dissolves, or breaks when exposed to certain environmental factors such as moisture, releasing the active agent. It is to wrap up. In mass production, the active agent may be encapsulated in microcapsules, and the microcapsules may be dispersed in the melted material of the fastener and extruded into the fastener 14.

  The first fin portion 28 may be impregnated with the active agent 50. It is contemplated that the activator 50 may be sprayed, brushed, coated, laminated, embossed, or otherwise applied to the first fin portion 28. For example, the active agent may be placed in a coating, patch, pouch, or tape that is affixed (eg, with a pressure sensitive adhesive) to the first fin portion 28 after the fastener 14 is manufactured. The choice of coating, patch, pouch or tape often depends on the type of active agent used. For example, an active agent in powder form (eg, a chemical containing minerals) may be placed in a breathable pouch rather than in a patch because it is often difficult to embed the powder in the patch. Alternatively, the active agent in powder form may be sprinkled over package components such as fins or body panels. Without limitation, powdered active agents that can be incorporated into the structure containing the drug include perlite, calcium carbonate, kaolin, and ASSETPROL antimicrobial agents manufactured by Engelhard.

  When a tape or patch is used to support the structure containing the drug, the tape or patch prevents or prevents the adhesive, patch-like component, and / or drug structure from adhering to the adhesive. A stripping system such as a slip additive may be included to assist. For example, the peeling system can be placed on the surface of the tape or patch that is placed distal to the surface that contacts the body panel to which the tape or patch is attached to prevent or prevent adhesion when the package is wound on a roll. To be. Components of such release systems include materials such as siloxane and glycerol monostearate.

  The drug structure varies in size and depends on factors such as the amount of drug desired, the specific drug used, the number of drug structures used in the package, and the dimensions of the package. According to another embodiment, the package may include two or more active agent structures.

  The drug structure of the present invention, such as a patch, tape or pouch, can also be attached to a package such as a reclosable bag by a pressure sensitive self-adhesive. The pressure sensitive self-adhesive can be any adhesive suitable for attaching the drug structure to the reclosable package. Non-limiting pressure sensitive adhesives that can be used include acrylic or rubber based adhesives.

  The drug structure, which is a tape or pouch, may be supplied in rolls on a layer of the reclosable package. The structure supplied by the roll, which is a tape or pouch, may initially be provided with a release liner that assists in preventing or preventing the drug from sticking to itself prior to delivery to the reclosable package. If a release liner is used, the release liner is peeled from the tape or pouch supplied on the roll before the tape or pouch is attached to the reclosable package or bag. Examples of release liners include silicon coated paper. However, release liners are undesirable because of the additional costs associated with them. It is also conceivable that the drug structure is delivered in rolls without the use of a release liner until attached to the reclosable package or bag.

  Alternatively, the drug structure, which is a patch or pouch, may be supplied in a magazine style when attached to a reclosable package. The patch is preferably supplied in a magazine style, and the pouch may be supplied in a magazine style or by a roll. The tape is preferably supplied in rolls when attached to the reclosable package. For example, the tape is unwound, cut to a predetermined length, and attached to a reclosable package.

  According to another aspect of the invention, the drug-structured patch, tape or pouch can be heat sealed directly to the reclosable package or bag. The structure is supplied in rolls or supplied in a magazine fashion before it is heat sealed to the reclosable package. In a heat seal embodiment, a release liner is rarely used because the drug structure without any adhesive does not stick to itself and the release liner adds unnecessary cost. The drug structure may be attached to a reclosable package at several locations. The drug structure can be attached to the body panel during heat seal formation. For example, the drug structure may be placed between the side seals formed between the first and second body panels. It is conceivable to use other attachment methods.

  It is also conceivable to add additional layers to the coating, patch, pouch or tape. For example, a barrier layer can be added to help keep the drug in communication with the interior of the reclosable package, thereby preventing or preventing freshness extender from penetrating the body panel. Also good.

  It is also conceivable to print the information on the drug structure, for example on the barrier layer. It is also conceivable to print at different locations. If the structure is placed inside a reclosable package, it is desirable to print on the surface of the drug structure closest to the body panel to make the print easier to read and read.

  In some embodiments, the drug structure, which is a covering, patch, pouch or tape, is placed inside the reclosable package. Alternatively, a drug structure that is a covering, patch, pouch or tape may be placed on the outer surface of the package or in a layer of the package so that the drug can penetrate into or communicate with the interior of the package. . For example, a drug structure that is a covering, patch, pouch, or tape is placed on the outer surface of a reclosable package from which a portion of the body panel has been removed so that the drug contained within the structure is reclosable. You may make it permeate | transmitted inside. The layer of reclosable package may allow the drug to permeate so that the drug can communicate with the interior of the reclosable package.

  Similarly, the active agent 52 may be incorporated into the second fin portion 34 or impregnated into the second fin portion 34. The active agent 52 may be sprayed, brushed, coated, laminated, or applied in some manner to the second fin portion 34.

  In some embodiments, the active agents 50, 52 include one or more freshness extenders. Each freshness extender may be, for example, a natural oil, an antimicrobial substance, an acid, or a substance that can extend the freshness or shelf life of other foods or perishables. For example, without limitation, examples of freshness-extending ingredients include isothiocyanates such as allyl isothiocyanate (AIT) from natural sources, d-limonene, eugenol, allicin, isothimol, thymol, chlorine dioxide, Hydrogen peroxide, sodium percarbonate, ascorbic acid, citric acid, cinnamic aldehyde, mustard, cinnamon, peppermint, spearmint, triclosan, leek (lily family leek), cinnamon (composite family leek), sanshuyu Allyl cyanide, 1 cyanide 2,3-epithiopropane, allyl thiocyanate, lactic acid bacteria reuteri, methyl isothiocyanate, cinnamon bark oil, lemongrass oil, sime oil, methyl jasmonate, tea tree oil, ethyl alcohol, salicylaldehyde, Carba Roll, cymme, various onion essential oil extracts, garlic essential oil extract, berry phenol extract from cranberry, cloudberry, raspberry, strawberry and bilberry, nutmeg, mint, clove, oregano, cinnamon, sassafras, sage, thyme And essential oils from rosemary, vanillin, vanillyl alcohol, vanillic acid, diacetyl, natural honey, fluorine dioxide, carbon dioxide, atmospheric modifiers, and combinations thereof. Atmosphere modifiers include nitrogen, oxygen, sulfur dioxide, carbon monoxide, carbon dioxide and combinations thereof.

  AIT naturally obtained from plants or foods such as mustard and horseradish is particularly useful as a freshness extender due to its antimicrobial properties. AIT is made from mustard-like plants containing glucosinolate and myrosinase enzymes. Myrosinase and glucosinolate react with each other to produce AIT, and the reaction involves hydrolysis, so moisture activates the production of AIT. AIT has been shown to exhibit antibacterial and antimicrobial properties. Since AIT is released in the form of a gas, it permeates into the inside of the package and suppresses the growth of bacteria inside, thus increasing the freshness of food or perishable items. Thus, AIT-generated products including various forms of wasabi, horseradish and mustard, such as extracts, powders, oils or finely ground seeds, can be used as freshness extenders in embodiments of the present invention.

  In some embodiments, the AIT freshness extender may be used in combination with other functional agents. For example, in some such embodiments, AIT is combined with an acid, which greatly promotes AIT production from mustard, and thus the antimicrobial effect of mustard. Thus, if finely ground mustard seed is used as a freshness extender, it can be combined with an acid anhydride such as citric anhydride in the desired ratio to increase the production of AIT and enhance the freshness extension function. it can.

  The freshness extender can also provide other functions and therefore can be used for such other purposes. In some embodiments, the freshness extender conceals, reduces, and / or only the freshness component for extending the freshness of the food and the irritating odor of the freshness component rather than the odor of the contents stored in the package. Contains odor components to neutralize. It is desirable that the odor component does not conceal the odor of the contents stored in the package, such as the odor of the food or the odor of the damaged food so that the decay or damage of the contents can be detected by the scent. For example, a freshness extender that includes an AIT freshness component, such as vanilla, cinnamon or citrus oil, that conceals the irritating odor of AIT but does not conceal or affect the odor of stored contents. An aromatic component may be included. Freshness extenders do not give the stored contents the property of stimulating their own sensory organs, so that the user can easily detect the decay or damage of the stored contents by smell. Is desirable.

  Instead, in some embodiments, the active agents 50, 52 include one or more odor management agents. Conveniently, the odor management agent can be incorporated into packages made for garbage or waste collection to conceal, neutralize and / or reduce undesirable odors. Alternatively, an odor management agent can be used to provide or create an odor to the package. Odor control agents can thus be placed in thermoplastic bags or liners and other containers such as trash or waste bags, diaper containers, laundry bags, storage bags, and disposable medical bags or containers. It can also be incorporated.

  Examples of odor control agents include, but are not limited to, substitutions such as AIT, d-limonene, mustard, natural oil, chlorine dioxide, hydrogen sulfide, methyl mercaptan, ammonia, citronella oil, pine, flowers, and METAZENE. Esters are included.

  Preferred embodiments of odor management agents include AIT, which can be provided, for example, by incorporating mustard into the active agent. Mustard, either in the form of finely ground mustard seeds, powder, oil or paste, alone or catalyzes the production of AIT from mustard to promote the antimicrobial and odor management properties of mustard It can be provided in combination with an acid. As mentioned earlier, AIT is effective in extending the freshness of perishable items, so when incorporated into a package of perishable items, it provides multiple functions, for example, AIT provides increased freshness. And can perform both odor management functions.

  In some embodiments, the odor management agent includes additional components to provide a pleasant or desired odor or fragrance to the user. For example, natural oils such as lemongrass oil can be used to control the odor emitted from the package, conceal the odor of the main odor management agent itself, or make the odor management agent odor more comfortable for the user. Can be better. Compositions of finely ground mustard seeds and acid anhydride combined with about 5% by weight lemongrass oil have been found to be particularly effective in managing unpleasant odors.

  The activators 50, 52 may contain additional substances to enhance the concentration of scents inside the package if they contain aromatic or fragrance ingredients to provide the desired scent to the package. . For example, the active agent 50 may include perlite to increase the concentration of the incense. Perlite is suitable for use because of its ability to retain scent, stability, and its surface area. Non-limiting examples of other materials for enhancing the scent include microspheres, talc, silicon, silicates such as aluminum silicate, vermiculite, diatomaceous earth, or combinations thereof.

  Furthermore, according to the present invention, the first and second fin portions containing at least one activator can activate an activation system that starts when the reclosable package is opened or filled with contents. Contains. The activation system may be mechanical, such as a perforation or stripping system that initiates release of the active agent upon separation. Another activation method is based on the level of moisture or moisture present in the package (related to the water activity of the contents). For example, large amounts of moisture can initiate chemical reactions that result in the release of volatile chemicals such as carbon dioxide or chlorine dioxide. In such an example, the higher the humidity within the reclosable package, the greater the amount of active agent added. Examples of reactions activated at high humidity levels are the reaction of salts and acids such as sodium bicarbonate and citric acid or sodium hypochlorite and citric acid. The release of AIT is also aided by moisture, as explained above. In such an example, as moisture increases, a greater amount of active agent is released into the package atmosphere.

  In a method of operating a reclosable package with a moisture-enhanced freshness extender, for example, if a perishable item is placed inside the package, the moisture or moisture level of the perishable component will cause the freshness extender to Activate. Furthermore, selective activation or release can be performed when the drug is located near the mouth of the bag-like package or near the edge of the container-like package. For example, if a perishable product passes near the drug (eg, through the mouth of the package or across the edge when the perishable product is first placed inside), While in the encased state, and when air enters the interior (eg, when the package is opened), moisture or moisture levels that are susceptible to spoilage activate the drug. Placing the drug near the mouth or rim of the package is also advantageous when it is necessary to maximize the contents of the contents in a transparent package.

  Also, the moisture activation method can be controlled by providing a barrier layer material. For example, it is desirable that the body panel be a barrier layer or formed of a barrier material to create a hermetic environment so that the introduction of moisture and the release of the active agent can be prevented or blocked when the package is closed. Further, for example, the fin portion may be a barrier layer or may be formed of a barrier material. As used herein, the terms “barrier layer” and “barrier material” are not layers or materials that completely block or prevent the release of active agent into the package atmosphere, but suppress or control in some way such release. A layer or material.

  An example of such a material is polyethylene glycol (PEG) that is incorporated into low density polyethylene (LDPE). Other materials that serve as barriers to the movement of water, water vapor, oxygen, nitrogen, carbon dioxide, ethylene, volatile or non-volatile activators include, but are not limited to, low density polyethylene (LDPE), linear Low density polyethylene (LLDPE), linear medium density 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), ASA / AES copolymer, polyamide 6, polyamide 66 and its copolyamide, polyvinyl chloride (PVC), acrylic, polybutylene terf Rate (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), polyamide, polyacrylic acid (PAA), polylactic acid (PLA), polyethylene terephthalate (PET), polyethylene terephthalate glycol (PETG), Saran, ceramic filling Polymer, nanocomposite polymer, polychlorotrifluoroethylene (PCTFE), polymethyl methacrylate (PMMA), acrylonitrile-methyl acrylate (AC-MA), polyphenylene ether PPE), polyphenylene oxide (PPO), thermoplastic elastomer, cellophane, nylon, polycarbonate (PC), modified polyolefin having barrier properties, cyclic olefin copolymer, polyacrylonitrile, acrylonitrile copolymer, polyacetal, modified polyester, acrylic derivatives, And inorganic barrier coatings, such as polymers, copolymers, blends, extrudates, coextrusions, coatings, metallization or lamination. It is also conceivable to use other barrier materials such as foils and metallized polymers such as metallized oriented polypropylene (OPP). The barrier layer is substantially impermeable to at least water vapor and activator, and in certain embodiments is also impermeable to oxygen, nitrogen and carbon dioxide, or combinations thereof. The barrier layer thus prevents or prevents water vapor (and in some embodiments oxygen, nitrogen and carbon dioxide) from entering the package, while preventing or preventing the active agent from leaking out of the package. It is preventing.

A typical cyclic olefin copolymer used in forming the barrier layer is TOPAS 8007. Useful cyclic olefin copolymers appear to be available from several companies. For example, Ticona, a Celanese AG company at the Summit, New Jersey, sells cyclic olefin copolymers. Other companies that may be selling cyclic olefin copolymers include Nippon Zeon (Japan), Mitsui Chemicals (Japan), and JSR (Japan), whose official name is Japanese synthetic rubber. The Celanese AG company Ticona sells cyclic olefin copolymers (COCs) under the trademark TOPAS. These cyclic olefin copolymers are believed to be prepared using a metallocene catalyst with a feed of norbornene and ethylene. At least four grades of TOPAS resin (TOPAS 8007, TOPAS 6013, TOPAS 6015, TOPAS 6017) are believed to be on the market. TOPAS resin 4 grades sold each have a glass transition temperature _{T g} of the 80,140,160,180 ℃. The corresponding norbornene levels of grade 4 TOPAS resin are 35, 48, 55, 59 mol%.

  Water soluble materials such as PVOH melt in a moisture environment and lose strength and / or barrier properties, so it is desirable not to form barrier layers 42, 44 alone. In the present invention, it is also conceivable to use additional layers, such as bonding or adhesive layers.

  The first fin portion 28 containing the active agent 50 can be made of a polymeric material including a thermoplastic material. Alternatively, if formed as part of a package, the polymer matrix layer may be impregnated with or supported by a microencapsulated active agent to form a component of the package, such as a fin portion. The matrix layer of drug structure 50 can be made of a polyolefin material such as polyethylene, polypropylene, polystyrene, and combinations thereof. Examples of matrix layer materials include, but are not limited to, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), linear medium density polyethylene (LMDPE), high density polyethylene (HDPE), extreme 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), impact polystyrene (HIPS), modified polystyrene, liquid crystal polymer (LCP), polyamide, polyacrylic acid (PAA), polylactic acid (PLA), polyethylene terephthalate glycol (PETG), polymethyl methacrylate ( PM A), polyphenylene Ether (PPE), thermoplastic elastomer, and cellulose and polymers filled plastic, include copolymers or blends. These materials generally provide an excellent barrier to water vapor, but allow oxygen and activator to permeate. Since polyethylene is recyclable, it is desirable to have a patch, tape or pouch with it. Another example of a material that can be used to form a patch, tape or pouch structure is ethyl methyl acrylate (EMA). The surface of the patch, tape or pouch may be formed of a porous nonwoven material (eg, gauze) that can release an active agent such as a freshness-extending or odor control agent. In order to manage odor, one of the layers of the odor management structure may further include a fragrance material (eg, perfume), a fragrance enhanced mineral, and / or a polymer resin (eg, LLDPE).

  In FIG. 1a, the first fin portion 28 has a length from the top portion 28c of the first fin to the first fin bottom portion 28d. It is also conceivable to change the length of the first fin portion 28 by increasing the distance between the first fin upper portion 28c and the first fin bottom portion 28d. If the first fin portion 28 is long, the activator can be added so that food or other perishable items placed in the interior space 22 can be stored for a longer period of time. Similarly, the second fin portion has a length from the top 34c of the second fin to the second fin bottom 34d. Again, it is believed that the distance between the second fin top 34c and the second fin bottom 34d can be varied depending on the amount of active agent required for a given reclosable package 10.

  As will be appreciated by those skilled in the art, the amount of drug used in combination with the package will depend on the environment in which the drug is used, eg, the disappearance and release rate of the drug. Release rate is the rate at which the drug is released into the interior of the package, and disappearance rate is the rate at which the released drug escapes from the interior of the package. Preferably, the drug of the present invention is placed in an amount that causes the drug release rate to exceed the drug disappearance rate during a predetermined “shelf life” or during the lifetime, so that the drug inside the package is It is replenished faster than it disappears, thus ensuring the effective function of the drug. The rate of drug disappearance depends on various factors related to package design, structure and usage.

  The reclosable package 10 may further include an optional breakable element. As shown in FIGS. 1 b-1 d, the packages 60, 70, 80 may each use an optional breakable element 12 that initially extends from the first fin portion 28 to the second fin portion 34. The breakable element 12 shown in FIGS. 1 b-1 d includes an optional one-time breakable preferential weakened region or preferential tear region 38 that forms a one-time breakable opening proof mechanism. The priority weak body region 38 may be a score line, a series of perforations, or a highly directional region. Further, the priority weak body region 38 may be made to be separated by cutting. The preferred weak body area 38 prevents the reclosable package 10 from being tampered with prior to opening. As shown in FIGS. 1b-1d, the position of the breakable element 12 can be changed relative to the ends of the first and second fin portions. The breakable element 12 need not have a preferential weak body region that can be broken only once. For example, in certain embodiments, the breakable element 12 includes a reclosable adhesive or adhesive seal.

  As shown in the packages 70, 80 of FIGS. 1c-1d, the first fin portions 76, 86 and the second fin portions 78, 88 may include a plurality of layers. First, in the embodiment shown in FIG. 1 c, the first track 72 has a first shape portion 26 and a first fin portion 76. The first fin portion 76 has a layer 62 containing an activator and a blocking layer 42. The active agent may be any of the active agents described above. The barrier layer 42 at least inhibits migration of water vapor and activator, but is preferably substantially impermeable to them, and in certain embodiments against oxygen, nitrogen, carbon dioxide, or combinations thereof. But the same is true. (The mechanisms 76a, 76b, 76c, 76d, 78a, 78b, 78c, 78d in FIGS. 1c and 3b and the mechanisms 86a, 86b, 86c, 86d, 88a, 88b, 88c, 88d in FIGS. 1d and 3c are: Respectively similar to the mechanisms 28a, 28b, 28c, 28d, 34a, 34b, 34c, 34d of FIG. 1a).

  The second track 74 has a second shape portion 32 and a second fin portion 78. The second fin portion 78 of FIG. 1 c has a layer 64 containing an active agent and a barrier layer 44. The activator 64 may be any of the activators described above. The barrier layer 44 at least inhibits the movement of water vapor and activator, but is preferably substantially impermeable to them, and in certain embodiments against oxygen, nitrogen, carbon dioxide, or combinations thereof. But the same is true.

  In the embodiment shown in FIG. 1 c, the layer 62 with the active agent is closest to the interior space 22. It is also conceivable to arrange the blocking layer 42 closest to the internal space 22. Similarly, the layer 64 with the active agent is closest to the interior space 22. It is also conceivable to arrange the blocking layer 44 closest to the internal space 22.

  As shown in FIG. 1 d, the first track 82 has a first shape portion 26 and a first fin portion 86. The first fin portion 86 includes a layer 62 containing an active agent, a blocking layer 42, and a diffusion layer 66. The active agent may be any of the active agents described above. The barrier layer 42 at least inhibits migration of water vapor and activator, but is preferably substantially impermeable to them, and in certain embodiments against oxygen, nitrogen, carbon dioxide, or combinations thereof. But the same is true. The diffusion layer 66 is located on the opposite side of the blocking layer 42 with respect to the layer 62 containing the active agent.

  The second track 84 has a second shape portion 32 and a second fin portion 88. The second fin portion 88 of FIG. 1 d has a layer 64 containing an active agent, a blocking layer 44, and a diffusion layer 68. The active agent may be any of the active agents described above. The barrier layer 44 at least prevents migration of water vapor and activator, but is preferably substantially impermeable to them, and in certain embodiments against oxygen, nitrogen, carbon dioxide, or combinations thereof. But the same is true. The barrier layer 44 is made of any of the previously described barrier materials. The diffusion layer 68 is located on the opposite side of the blocking layer 44 with respect to the layer 64 containing the active agent.

  The diffusion layers 66, 68 of the first and second fin portions 86, 88, respectively, are made of a material suitable to allow the active agent to reach the interior of the reclosable package relatively quickly. Yes. Therefore, materials that are permeable to water, water vapor, oxygen, nitrogen, carbon dioxide, ethylene, volatile or non-volatile activators are used for the diffusion layer. Examples of diffusion layers include 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 copolyamide, polyvinyl chloride (PVC), acrylic, polybutylene terephthalate (PBT), thermoplastic polyester (TPE), ethylene / ethyl acrylate (EEA), ethylene / vinyl acetate (EVA), polystyrene ( PS), impact polystyrene (HIPS), modified polystyrene, ethylene-vinyl-alcohol (EVAL or EVOH), polyacrylic acid (PAA), polylactic acid (PLA), filled polymer, hydrophilic nanocomposite polymer, polymer Polymers, copolymers, blends of polymethacrylate (PMMA), thermoplastic elastomers, polydimethylsiloxane (PDMS), polymethylpentene (PMP), polyvinyl acetate (PVA), polyvinyl alcohol (PVAL), and cellulose acetate (CA), Extrudates, coextrusions, coatings or laminations are included.

  As will be appreciated by those skilled in the art, the percentage of material in the layer composition, the amount of material in the layer composition (e.g., of the layer composition) to form either the matrix, the barrier, or the diffusion layer. Depending on the thickness) and / or the fabrication method, the same type of polymer material can be used. Therefore, the use of a specific polymer material as a component of the matrix, barrier wall or diffusion layer depends on the amount and method of use.

  The diffusion layers 66, 68 assist in controlling the amount of active agent that communicates with the interior space 22. Specifically, the diffusion layer controls the amount of active agent released into the package such that the amount entering the package is equal to or greater than the amount lost outside the package. To do. Thus, controlling the amount of active agent in communication with the interior space ensures that there is always an appropriate amount of active agent in the package, thereby allowing food in reclosable packages, perishable items, or The shelf life before use of other contents is improved. The diffusion layer further acts to ensure an adequate release rate of the active agent during use of the reclosable package.

  In the embodiment shown in FIG. 1 d, the diffusion layer 66 is closest to the internal space 22. It is also conceivable to arrange the blocking layer 42 closest to the internal space 22. Similarly, the diffusion layer 68 is closest to the internal space 22. It is also conceivable to arrange the blocking layer 44 closest to the internal space 22.

  The track, shape, fin portion, and one-time breakable element typically include 25, one or more polymer resins. The track, shape, fin portion, and one-time breakable element may be independently composed of one or more polyolefins including, but not limited to, polyethylene, polypropylene, or combinations thereof. The types of polyethylene include, but are not limited to, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), medium density polyethylene (MDPE) and combinations thereof. . Other, but not limited to, for example, plastomers, elastomers, ethylene vinyl acetate (EVA), ethyl methacrylate, polymethylpentene copolymers, polyisobutylene, polyolefin ionomers, cyclic olefin copolymers (COCs), or polyethylene and / or Combinations thereof are included, including polypropylene.

  One or more of the tracks, features, fin portions, and / or one-time breakable elements can be made of multiple layers. The multiple layers of tracks, shapes, fin portions, and one-time breakable elements can be formed independently by coextrusion or other processes such as coating or lamination.

  The opposing films forming the opposing body panels 16, 18 of the polymer package can be made of one or more polymer resins. Opposing body panels 16, 18 may be composed of one or more polyolefins including, but not limited to, polyethylene, polypropylene, or combinations thereof. The types of polyethylene include, but are not limited to, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), medium density polyethylene (MDPE) and combinations thereof. . Other, but not limited to, for example, plastomers, elastomers, ethylene vinyl acetate (EVA), ethyl methacrylate, polymethylpentene copolymers, polyisobutylene, polyolefin ionomers, cyclic olefin copolymers (COCs), or polyethylene and / or Combinations thereof are included, including polypropylene.

  Further, the opposing body panels 16, 18 of the present invention can be made of multiple layers including layers that are joined by coextrusion or other processes such as coating or lamination. Colorants, metal components, paper, and / or paper / plastic composites can also be incorporated into or on the layers of the polymer bag of the present invention.

  The optional slider mechanism 36 can be formed of a suitable polymer 25 material such as, for example, nylon, polypropylene, polyethylene, polystyrene, copolymers of polyethylene and polypropylene, polycarbonate, polyester, polyacetal, or acrylic butadiene styrene copolymers. A particularly suitable component for making the slider mechanism 36 is polypropylene, polycarbonate, or polyester. The slider mechanism 36 can be formed by injection molding.

  Similarly, the opposing body panels 16, 18 (as shown in FIGS. 1a-1d, 3a-3c) are substantially impermeable to at least water vapor and activator, and in some embodiments oxygen, A barrier layer that is substantially impermeable to nitrogen, carbon dioxide, or combinations thereof may also be formed. The opposing body panels 16, 18 may then include the same materials as described above for the formation of the fin portion blocking layers 42, 44. Opposing body panels 16, 18 can be barrier layers located on the exterior or interior surface of the package.

  The opposing body panels 16, 18 can be made of multiple layers. For example, the opposing body panels 16, 18 may include a tie layer attached to the fin portion. The tie layer is made of ethylene vinyl acetate (EVA), anhydrous modified polyolefin, anhydrous modified ethylene acrylate, anhydrous modified EVA, acid modified EVA, acid modified ethylene-acrylate, amorphous polyolefin modified EVA polymer, or It can be made of various materials such as a combination of Anhydrous modified polyolefins include, for example, anhydrous modified high density polyethylene (HDPE), anhydrous modified low density polyethylene (LDPE), and anhydrous linear low density polyethylene (LLDPE).

  An example of a three-layer body panel (not shown) includes a first layer having the same materials as previously described for making the fin portion blocking layers 42, 44, a bonding layer, LDPE, HDPE, And a third layer made of polyolefins such as LLDPE or combinations thereof. In this embodiment, it is desirable that the first layer is disposed inside the main body panel and the bonding layer is disposed between the first layer and the third layer. Such a main body panel is used similarly to the main body panels 16 and 18 described above.

  The components of the reclosable closure device (such as a track with integral mating features and fins) can be removed from the package body by processes such as heat sealing, welding (eg ultrasonic welding) or blocking. Mounted on the panel. The process used depends on the material from which the bag and the reclosable closure device are made. Specifically, heat sealing is a process in which materials are fused or melted together. Welding is a process in which an intermediate third material is used to “glue” similar materials together. Blocking is the process of intimate surface contact adhesion between layers without sealing as a result of at least sufficient pressure and optional temperature increase.

  The fin portion may be attached to the body panel in a manner different from that shown in FIGS. 1a-1d. 3a-3c, the mouth of the reclosable package 110, 120, 130 forms a package body and defines a pair of first and second opposing body panels or wall panels 16, 18 is included. In FIG. 3 a, a first track 24 having a first shape portion 26 and a first fin portion 28 extending generally downward from the first shape portion 26 is connected to the first body panel 16. The first main 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. A second track 30 having a second shape portion 32 and a second fin portion 34 extending generally downward from the second shape portion 32 is connected to the second main body panel 18. The second body panel 18 has an outer surface 18a and an inner surface 18b. The second fin portion 34 has an outer surface 34a and an 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 features 26, 32 releasably engage each other and provide a reclosable seal for the package 110.

  In the embodiment shown in FIG. 3 a, the first fin portion 28 includes an active agent 50. Specifically, the active agent 50 may be any of the active agents described above. The second fin portion 34 has an activator 52. Specifically, the activator 52 may be any of the freshness extenders described above.

  The activator 50 can also be extruded with the first fin portion 28. The first fin portion 28 may be impregnated with the active agent 50. It is also conceivable to spray, brush, coat, laminate or emboss the activator 50 onto the first fin portion 28.

  Similarly, the activator 52 can be extruded with the second fin portion 34. The second fin portion 34 may be impregnated with the active agent 52. It is also conceivable that the activator 52 is sprayed, brushed, coated, laminated or embossed onto the second fin portion 38.

  As shown in FIGS. 3b-3c, the first fin portion and the second fin portion may include a plurality of layers. First, in the embodiment shown in FIG. 3 b, the reclosable package 120 includes a first track 72 and a second track 74. The first track 72 includes the first shape portion 26 and the first fin portion 76. The first fin portion 76 has a layer 62 containing an active agent and a blocking layer 42. The active agent may be any of the active agents described above. The barrier layer 42 is substantially impermeable to at least water vapor and activator, and in certain embodiments, is desirable for oxygen, nitrogen, carbon dioxide, or combinations thereof.

  The second track 74 includes the second shape portion 32 and the second fin portion 78. The second fin portion 78 of FIG. 3 b has a layer 64 containing an active agent and a blocking layer 44. The active agent may be any of the active agents described above. The barrier layer 44 is substantially impermeable to at least water vapor and activator, and in certain embodiments, is desirable for oxygen, nitrogen, carbon dioxide, or combinations thereof.

  In the embodiment shown in FIG. 3 b, the layer with the active agent 62 is closest to the interior space 122. It is also conceivable to arrange the blocking layer 42 closest to the internal space 122. Similarly, the layer with activator 64 is closest to the interior space 122. It is also conceivable to arrange the blocking layer 44 closest to the internal space 122.

  The reclosable package 120 of FIG. 3 b includes an optional one-time breakable element 112. The one-time breakable element 112 is designed to serve the same purpose as the one-time breakable element 12 of FIGS. 1b-1d.

  In FIG. 3 c, the reclosable package 130 includes a first track 82 and a second track 84. The first track 82 includes the first shape portion 26 and the first fin portion 86. The first fin portion 86 includes a layer 62 containing an active agent, a blocking layer 42, and a diffusion layer 66. The active agent may be any of the active agents described above. The barrier layer 62 is substantially impermeable to water vapor and activator, and in certain embodiments, is desirable for oxygen, nitrogen, carbon dioxide, or combinations thereof. The barrier layer 42 may include any of the previously described barrier materials.

  The diffusion layer 66 may include any of the diffusion layer materials described above. The diffusion layer 66 assists in controlling the amount of active agent that communicates with the interior space 122. The diffusion layer 66 is disposed on the opposite side of the blocking layer 42 with respect to the layer 62 having the active agent. Controlling the amount of active agent in communication with the interior space improves the shelf life before use of food, perishable items, or other contents in reclosable packages. The diffusion layer further serves to ensure a proper release rate of the active agent during use of the reclosable package.

  A second track 84 having a second shape portion 32 and a second fin portion 88 is shown in FIG. 3c. The second fin portion 88 of FIG. 3 c has a layer 64 containing an active agent, a blocking layer 44, and a diffusion layer 68. The active agent may be any of the active agents described above.

  The barrier layer 44 is substantially impermeable to water vapor and activator, and in certain embodiments, is desirable for oxygen, nitrogen, carbon dioxide, or combinations thereof. The barrier layer 44 may include any of the previously described barrier materials. The diffusion layer 68 may include any of the diffusion layer materials described above. The diffusion layer helps control the amount of active agent in communication with the interior space 122. The diffusion layer 68 is disposed on the opposite side of the blocking layer 44 with respect to the layer containing the active agent 64. Controlling the amount of active agent in communication with the interior space improves shelf life prior to use of food, perishable items, or other contents in reclosable packages. The diffusion layer further serves to ensure a proper release rate of the active agent during use of the reclosable package.

  In the embodiment shown in FIG. 3 c, the diffusion layer 66 is closest to the internal space 122. It is also conceivable to arrange the blocking layer 42 closest to the internal space 122. Similarly, the diffusion layer 68 is closest to the internal space 122. It is also conceivable to arrange the blocking layer 44 closest to the internal space 122.

  Alternatively, an adhesive seal can be used as the fastener or reclosable element of the present invention. Such seals employ a resealable adhesive-type material that is applied to either or both of the films forming the package. The adhesive may alternatively be applied to the intermediate base strip. Embodiments of the present invention contemplate using other closure devices as well as adhesive seals and zippers.

  The reclosable packages 10 and 110 shown in FIGS. 1a and 3a are used by consumers to store food or other perishable items, such as leftover food. In operating the reclosable package 10, one or more food items or perishable items are placed in the interior 22 of the package 10 and the fastener 14 is moved to the closed position. The moisture or moisture level present in the food product activates the freshness extender 50 or 52 when the food product passes close to the active agent and when the food product is contained inside, causing the food product to Stop hurting. Furthermore, even if the package 10 is opened, i.e., the reclosable fastener 14 is moved to the open position, the air enters the interior 22 to activate the activator 50 or 52.

  As shown in FIGS. 1b, 1c, 3b, 3c, the reclosable packages 60, 120 and 70, 130 differ with respect to the placement of the active agent relative to the breakable element. For example, the activator 50, 52 of the package 60 of FIG. 1b is located above the breakable element 12, and is therefore located away from the interior until use, while the activator of the package 70. 62 and 64 are arranged above and below the breakable element 12. In general, the active agent in the package can be placed above, above and below, or below, the one-time breakable element.

  Packages with breakable elements are used by consumers to store food or other perishable items. In manipulating the reclosable package 60 or 70, the breakable element 12 is breached and something that is susceptible to spoilage is placed in the interior 22 of the packages 60 and 70, and the packages 60 and 70 are broken. And resealed along the fastener 14. If the freshness extender is placed above the breakable element, as in the reclosable package 60, the freshness extender will allow the food to pass close to the drug (eg, a perishable product first in the interior). Activated through the mouth of the package upon entry) and the entry of air into the interior (eg, when opening or reopening the package). If the freshness extender is placed above and below the breakable element, similar to the reclosable package 70, the freshness extender is in a state where the food is placed inside as the food passes near the drug. And activated when air enters the interior. In general, for consumer use, a package in which a freshness-extending agent is placed below the breakable element is desirable, because the drug is not exposed to air until the package is opened, and thus the shelf life of the drug This is because it extends.

  Packages with breakable elements are also suitable for different types of commercial forming, stuffing and sealed food packaging operations (“FFS operations”). Such a package can be used for different types of FFS operations, depending on the placement of the freshness extender relative to the breakable element. A package in which the freshness extender is placed above the one-time breakable element is substantially evacuated when the interior of the package containing the food closes the package via the one-time breakable element. Suitable for FFS operations. Since the food is placed in a vacuum environment, it is prevented from being damaged inside the package until the one-time breakable element is broken. However, once opened, the freshness extender is prevented from being damaged, so a freshness extender below the breakable element is not necessary. In contrast, a package in which the freshness extender is placed below, or above and below, the one-time breakable element, the inside of the package containing the food is packaged via the one-time breakable element. It is suitable for FFS operations that are not evacuated or only partially evacuated when is closed. A freshness extender located below the one-time breakable element can prevent food contained inside the package from being damaged and extend its shelf life. Such an arrangement of a freshness extender and a one-time breakable element is suitable for foods that are known to be bruised quickly, such as cheese. In general, a package in which a freshness extender is placed above the breakable element is suitable for commercial operations where food is placed in a vacuum package, where no drug is used until the package is opened. Because.

  The package may be formed of any suitable material, such as a thermoplastic material suitable for storing or collecting items, including storage of perishable items. Of course, common sized reclosable packages such as 1 pint storage and freezer bags, 1 quart storage and freezer bags, and 1 gallon storage and freezer bags are included. The reclosable package is typically formed of a polymer material such as a polyolefin material. Non-limiting examples of polyolefin materials include polyethylene, polypropylene, polystyrene, and combinations thereof. For example, the types of polyethylene material include high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and combinations thereof. Plastomers, elastomers, ethylene vinyl acetate (EVA), ethyl methacrylate, polymethylpentene copolymers, polyisobutylene, polyolefin ionomers, cyclic olefin copolymers (COCs), or combinations thereof to form the reclosable package of the present invention It is also conceivable to use materials such as polyethylene and / or polypropylene. The thickness of the reclosable package varies with the present invention, but is generally about 0.5 to about 5 mils, and more specifically about 1 to about 3 mils.

  As explained above, the active agent of the present invention can be used in combination with the fin portion of the reclosable package fastener. Alternatively and / or in combination, the active agents of the present invention can be reclosed as described in detail in co-pending US patent application Ser. No. 086012-38700-USPT. It can be used in combination with a package body panel, the entire contents of which are incorporated herein by reference.

  It is contemplated that additional or alternative layers may be used to form the reclosable package shown and described herein. For example, a freshness-enhancement promoting layer can be added or incorporated into the body panel instead of or in addition to using the fin portion. The freshness-extension promoting layer can promote the release of the freshness-extending agent as the humidity increases. Correspondingly, the higher the humidity, the faster the growth of the corresponding bacteria, which in turn often leads to faster food damage. The freshness extension promoting layer is, for example, polyvinyl alcohol (PVOH).

  Although the disclosed packages with active agents have been shown and described with reference to the illustrated embodiments, many equivalents are possible for these embodiments, as will be appreciated by those skilled in the art. Such equivalents are encompassed by the scope of the present disclosure and the claims.

  For example, as will be appreciated by those skilled in the art, the present invention includes non-reclosable bags and liners, rigid containers such as rigid litter boxes, plastic containers and lunch boxes, and food packaging wraps and foils. It can be applied to various types of packages and containers. Similarly, as will be appreciated by those skilled in the art, the present invention provides agents other than freshness extenders, such as odor control agents, and others that provide the desired function or effect to the package or contents contained therein. Can be applied to any drug.

  Unless otherwise specified, it should be understood that articles used to modify a noun herein include one or more of the number of nouns being modified.

FIG. 1a is a cross-sectional view of a mouth of a reclosable package or bag according to an embodiment of the present invention. FIG. 1b is a cross-sectional view of the mouth of a reclosable package or bag according to another embodiment of the present invention. FIG. 1c is a cross-sectional view of the mouth of a reclosable package or bag according to yet another embodiment of the present invention. FIG. 1d is a cross-sectional view of the mouth of a reclosable package or bag according to yet another embodiment of the present invention. 1b is a perspective view of a reclosable package incorporating the mouth of FIG. 1b with the reclosable fastener or zipper slider mechanism opened and the one-time breakable element partially open. FIG. FIG. 3a is a cross-sectional view of the mouth of a reclosable package or bag according to another embodiment of the present invention. FIG. 3b is a cross-sectional view of the mouth of a reclosable package or bag according to yet another embodiment of the present invention. FIG. 3c is a cross-sectional view of the mouth of a reclosable package or bag according to yet another embodiment of the present invention.

Claims (20)

In the reclosable package,
A pair of opposing body panels integrally connected along a pair of opposing sides and a bottom that bridges the sides and defining a mouth on the opposite side of the bottom;
A reclosable fastener extending along the mouth and including a pair of polymer tracks, the tracks each including an engagement element and a fin portion, the engagement elements being releasable from each other A reclosable fastener that can be engaged, each fin portion extending generally downwardly from the reclosable element toward the bottom of the reclosable package;
A recloseable package comprising an activator associated with at least one of the fin portions to communicate with the interior of the recloseable package.   The activator is applied to at least one of the fin portions by at least one of brushing, coating, soaking, laminating, spraying, and embossing the activator onto at least one of the fin portions. The reclosable package of claim 1 attached.   The reclosable package of claim 1, wherein the active agent is extruded with at least one of the fin portions.   4. The reclosable package of claim 3, wherein the active agent is distributed in at least one of the fin portions in the form of microcapsules.   The activator is included in an activator layer attached to at least one of the fin portions by at least one of adhesive, co-extrusion, heat sealing, and welding. Recloseable package.   The reclosable package of claim 1, wherein the active agent is included in at least one of a coating, patch, pouch, and tape applied to at least one of the fin portions.   The reclosable package of claim 1, further comprising a structure for selectively initiating release of the active agent.   The reclosable package of claim 1, wherein the active agent is activated by moisture.   The reclosable package of claim 1, wherein the activator is a freshness extender comprising an isothiocyanate compound.   The reclosable package of claim 9, wherein the freshness extender further comprises an acid.   The reclosable package of claim 9, wherein the freshness extender further comprises a fragrance.   The reclosable package of claim 1, further comprising a one-time breakable element extending between the fin portions and disposed between the interior and the reclosable fastener.   The reclosable package of claim 12, wherein the active agent is disposed above the one-time breakable element.   The reclosable package of claim 12, wherein the activator is disposed below the one-time breakable element.   The reclosable package of claim 1, further comprising a barrier layer associated with at least one of the body panels to form a barrier environment therein. The active agent is contained within an active agent layer, and the reclosable package includes:
The reclosable package of claim 1, further comprising a barrier layer associated with at least one of the fin portions.   The reclosable package of claim 16, wherein the activator layer is disposed closer to the interior than the barrier layer.   The reclosable package of claim 1, further comprising a diffusion layer associated with at least one of the fin portions and adjacent to the active agent layer containing the active agent.   The reclosable package of claim 18, wherein the diffusion layer is disposed closer to the interior than the activator layer. In the reclosable package,
A first opposing body panel having an inner surface and an outer surface;
A second opposing body panel having an inner surface and an outer surface, wherein the first and second body panels are connected along a pair of opposing sides and a bottom that bridges the sides. The first and second main body panels connected to each other form an internal space, and a second opposing main body panel forming an internal space;
A reclosable polymer seal extending along said one end of said inner surface of each of said first and second opposing body panels, comprising a first polymer track and a second polymer track. The first polymer track includes a first fin portion and a first mating element, the first fin portion extending generally downwardly from the first reclosable element toward the bottom; The first fin portion has at least a first layer having an active agent and a second layer that is a blocking layer, and the second polymer track includes a second fin portion and a second meshing element, The second fin portion extends generally downward from the second reclosable element toward the bottom, and the second fin portion is at least a third layer having an active agent and a barrier layer. Has a layer and before Wherein the first mating element second engagement element may be releasably engaged with each other, reclosable package comprises a reclosable polymeric seal, a.

Images