MXPA06010421A - Microwave popcorn arrangement - Google Patents

Abstract

A microwaveable popcorn bag arrangement is provided. The bag includes a multi-ply construction, wherein one or more of the plies, comprises non-fluorocarbon treated paper. A preferred two-ply arrangement is provided, with a preferred porosity of non-fluorocarbon treated paper used as the inner and outer ply. Techniques of folding the bag arrangement providing a desirable configuration, are provided.

Description

ARRANGEMENT OF CORN POPPIES FOR MICROWAVES Cross Referencing Related Requests This application claims the benefit of the PCT International Patent Application on March 1, 2005, in the name of Con Agrá Foods, Inc., a United States national corporation, applicant for designation in all countries. except US, and Eric Craig Jackson, Denise Ellen Hanson, James W. Montealegre and Lance Bernard Schilmoeller, all of them US citizens, applicants for the designation of US only, and claims the priority of US Patent Application Nos. 60 / 552,560, filed on March 12, 2004 and 60 / 574,703, filed on May 25, 2004.

Field of the Invention The present invention relates to a food packaging for microwaves. The description relates in particular to arrangements for microwave popcorn. The principles relate to preferred arrangements for a package with an interior, typically configured to internally receive a load of popcorn. In particular, the principles relate to the use of preferred paper materials for the generation of a package for popcorn and packaged microwave popcorn products.

BACKGROUND OF THE INVENTION At present, a wide variety of microwave food products are known. A major concern is construction to pop popcorn. In general, a consumer product is a package that includes a load of popcorn. During use, the package that includes an unpopped load of popcorn is properly placed in the microwave oven, and exposed to microwave energy. During the microwave process, the popcorn burst. The particular arrangements with which the present invention relates are those in which the package is a flexible bag that expands during the bursting process. Flexible bag arrangements are described, for example, in U.S. Patent Nos. 4,548,826; 4,691, 374; 5,081, 330; 5,044,777; 5, 195,829; 5,302,790; and 5,650,084. The descriptions of the seven patents are incorporated herein by reference. With reference to U.S. Patent No. 5,044,777, certain characteristics of a package for conventional microwave popcorn are evident. First, the bags are provided in a configuration where lateral packages are used to separate the internal volume of the bag in a first and second "tubes". When the arrangement is filled, usually, the popcorn load is placed in one of the two "tubes" and is retained essentially in it before the trapping. This is shown, for example, in U.S. Patent No. 5,044,777 in Figure 3.

Also, in general the load of popcorn is placed in a central portion (typically, a third to the center) of the packing arrangement. In many arrangements, during storage of the packing arrangement it is folded into a "three fold" configuration. This is evident from the drawings and descriptions of U.S. Patent Nos. 4,044,777 and 5,195,829 and is specifically illustrated in U.S. Patent Nos. 4,548,826, Figure 5; U.S. Patent No. 4,691,374, Figures 3 and 14; and U.S. Patent No. 5,650,084, Figures 1 and 4. In some cases, it has been found that placing the popcorn load essentially in one of the two tubes, and essentially only in the central portion of that tube , especially in association with an interactive microwave material or susceptors placed in close proximity, leads to a preferred trapping characteristic. This is generally described in the previously identified US Patents, and specifically in connection with US Patent Nos. 4,548,826 and 4,691., 374. Here, when it is said that the load of popcorn is "substantially in" the location, it is preferred that at least 80% (more preferably, at least 95%, by weight) more preferably, everything, that is, at least 99%) by weight of the load (popcorn, fat, flavorings, etc.) is in the established location. Typically, microwave popcorn packages comprise two two-layer paper arrangements, made of materials to provide a low level of acceptance for the passage of grease (ie, oil / grease), if present through the packaging, during storage. Frequently, this is achieved through the use of fluorocarbon papers, for the inner layer, the outer layer or both. The present invention relates to improvements in packaging and microwave products.

Brief Description of the Invention In accordance with the present disclosure, microwave popcorn arrays are provided, which include an expandable, flexible bag configuration. Preferably, the construction comprises at least one sheet or layer of paper that has not been treated with a fluorocarbon treatment agent. Preferably, both layers of a two-layer arrangement are made with paper materials that have not been treated with fluorocarbons. Here, the term "two layers", when used in this context, is intended to refer to a construction used to form the side walls of the bag, which comprise two sheets of paper secured together. The term "two layers" is intended to be applied in this context, even when between two layers of paper is placed an interactive construction with microwave or a susceptor, in sheet form. Generally speaking, in the preferred arrangements, an outer layer and an inner layer are provided. The inner layer is usually the layer of material that defines the interior of the arrangement or packaging of microwave popcorn. Preferably, the inner layer will comprise a paper (typically highly refined) having a porosity, before inclusion in the bag, not greater than 300,000 Gurley-sec. Preferably, it comprises a material having a porosity of not more than 600,000 Gurley-sec, and more preferably, it is made of a sheet material having a porosity no greater than 950,000 Gurley-sec. (It should be noted that Gurley-seg is a unit of measurement for porosity, in accordance with the test identified below: A high number in Gurley-sec., Usually refers to a low porosity). The inner layer may include fields of sealant, adhesive or other material (preferably non-fluorocarbon) applied to the inner surface, if desired. The term "outer layer" as used herein, is intended to refer to the layer of paper forming the outer surface of the array or flexible bag for popcorn for micocroondas. Preferably, it comprises a paper (typically, highly refined) having a porosity, before use in the bag, no greater than 30,000 Gurley-sec. , more preferably, no greater than 35,000 Gurley-sec. , and more preferably not more than 40,000 Gurley-sec. The preferred materials of the inner layer and the outer layer can be configured in a variety of ways and with a variety of seal arrangements to form the popcorn arrays for microbrowns. An example is characterized, but other alternatives are possible. Preferred typical bags will be those having a double bent arrangement to define the bottom of the bag which includes first and second face panels, opposites, joined by opposite first and second side directed inward packing. Each lateral packing preferably comprises two panel sections, the first adjacent to the first face panel and the second adjacent to the second face panel. A variety of arrangements are possible, and the one that can be used is characterized in detail below.

Brief Description of the Drawings Figure 1 is a front perspective view of an arrangement in accordance with an embodiment of the present invention, the arrangement of the Figure 1 is illustrated in a bend for storage and oriented straight at an angle. Figure 2 is a top plan view, schematic of an arrangement according to Figure 1, illustrated unwrapped and unfolded as it would be when placed in the microwave oven for cooking. Figure 3 is an enlarged top view of a sheet of flexible sheet material from which the bag arrangement can be folded, as can be seen in Figures 1 and 2, the arrangement of the Figure 3 includes marks that indicate where preferentially, the sealing material is placed during construction. Figure 4 is an enlarged, cross-sectional view taken along generally line 4-4 of Figure 2. Figure 5 is a view analogous to Figure 3, with letters indicating the exemplary dimensions found therein. description.

Figure 6 is a top plan view of a packaging mold different from that shown in Figure 3, which can be used to form the arrangement of Figure 2. Figure 7 is an analogous visia of Figure 6, but with symbols that indicate the dimensions found in this description. In some of the Figures, in some cases, the thicknesses relative to the component can be exaggerated, to offer greater clarity.

Detailed Description of the Invention 1. Problems with papers treated with fluorocarbon. Although to date there is no specific government regulation regarding this issue, it can be perceived that fluorocarbon-treated paper materials may be undesirable, for use in the packaging of microwave popcorn. The problems usually refer to the work environment for packing preparation and / or popcorn packing facilities. However, there is also some concern related to the possible release of fluorocarbon during the pop-up operation of microwave popcorn. In general, treatment with fluorocarbons in at least one of the layers of paper has been considered as very important with respect to obtaining desirable oil / grease retention characteristics, during storage, shipment and handling of the products. of popcorn for microwaves. Certainly, many of the microwave popcorn paper products use paper treated with fluorocarbons, to obtain the desirable, reduced infiltration characteristics with respect to the fat / oil contained within the unburst popcorn load contained in the packaging. Here, preferred materials and constructions are defined for microwave popcorn products, which provide the desirable levels of operation in a variety of microwavable popcorn loads, with respect to the infiltration characteristics of the contained oil / fat, without the use of papers treated with fluorocarbons.

II. Preferred materials treated with fluorocarbons to be used in the preparation of a package for microwave popcorn - highly refined papers In general, the adequate selection of unprocessed fibers, as well as the high refinement of the unprocessed fibers in the manufacturing process of paper, results in fibers that offer the resulting paper with a stain resistance and fat-proof properties on paper. This resistance or test against grease is the result of a firm packing of highly refined fibers in the leaf, which physically prevents the migration of grease in and through the leaf. The highly refined fibers also absorb a large amount of water on the surface. Esío generates a layer of water, which gives the hydrophilic characteristic to the surface of the paper, which makes the fibers and, therefore, the paper intrinsically oil-repellent. In addition, highly refined fibers are more flexible. Esio is important for microwave popcorn packaging, since microfractures can occur in the package during folding and bending, which could cause the draining of grease. The more flexible fibers have are less susceptible to damage during the bending or folding processes. To provide the grease-proof feature and highly refined papers, a film former is typically applied to the surface of the paper sheet. Examples of such film formers are copolymers of EVA (vinyl ethylene acetate) and PVOH (polyvinyl alcohol) or acrylics. An example is Jonson Polymer F41. The general characteristics of highly refined fat-proof papers treated with non-fluorocarbons (non-FCT) for use in microwave popcorn packaging are provided below. Some paper types available for sale that meet these general characteristics can be obtained from Rhinelander Paper Company, Inc., Rhinelander, Wisconsin, 54501. Rhinelander is a Wausau-Mosinee Company. The products are those designated with the product code number 238-9577, and the product code 238-9696. As will be evident from the following, the product number 238-9577 is particularly suitable for use as the inner sheet of a microwave popcorn bag and the product number 238-9696 is particularly useful for the outer layer of a microwave popcorn bag. a bag construction for microwave popcorn. The Wausau 238-9696 product is preferred for the outer sheet, typically because of its high opacity or high whiteness. (It should be noted that Wausau can also be used for the outer layer, it is similar to 238-9696, but it has a higher basis weight). The term "highly refined" as used herein, sometimes abbreviated as HR, refers to its ordinary definition in the papermaking industry, where resistance to grease and oil is obtained on paper by means of reducing porosity, typically by refining a freshly hydrated pulp to an extremely low release capacity, which results in a closed sheet with minimal space or reduced space. Historically, filers achieved this level of refinement. Modern paper mills usually use refiners to achieve this. In general, it is preferred that the flexible paper material used for the inner sheet, ie the sheet defining the inner surface of the bag construction, has a porosity (Gurley-sec.) Of not more than 300,000, preferably, no more than 600,000 and more preferably, 950,000 or less. The production 238-9577 of degree Wausau reaches this qualification, since it is a material not treated with fluorocarbons, but 238-9696 does not reach this qualification. (When measured in Gurley-sec., The higher numbers are of lower porosity.) Thus, the phrase "or less-" actually refers to higher numbers.This phrase could alternatively be "have a porosity value. in Gurley-seg., of at least 300,000, preferably, at least 600,000 and more preferably at least 950,000").

In general, for the outer layer, i.e., the layer forming the outer surface of a flexible microwave popcorn bag, it is preferred that the highly refined paper material have a porosity (Gurley-sec.,) No greater than 30,000, preferably, no greater than 35,000 and typically and more preferably 40,000 or less. Both the Wausau degree 238-9577 and the Wausau grade 238-9696 meet this feature. (Also, Wausau grade paper # 25, 238-9646 is useful for this). Preferably, for each paper (layer), a material having a basis weight of 20/30 Ib / shore (3000 square feet) is used. More preferably, the basis weight is not greater than 25 Ibs / bank. Typically, each sheet has a thickness (caliber) of 1.75-2.0 mils, typically no more than 1.9 mils, for example, 1.8-1.9 mils.

B. Description referring to preferred materials for the outer layer for the packaging of micoondas. The comparative characteristics of two materials, which can be used in the preferred packaging for microwave popcorn, are provided in the following table (Table 1). The material designated with "X" is a material commercially used for the outer layer in at least the following commercial products: Act II Butter (in 2003); Orville Reddenbacher Movie Theater Butter (in 2003); Act ll Extreme Butter (in 2003). These products are manufactured and marketed by ConAgra Foods, Inc., the assignee of this invention.

The comparison is with the highly refined paper, not treated with fluorocarbons, 238-9696 Wausau grade mentioned above. In Table I, the dimension of the gauge is in mils (thousandths of an inch). Table 1 238-9696 degree Test method Wausau No-FCT external Treated YES NO TAPPIT 410om-9 fluoroq only Base weight 20.4 lbs / 3000 p.es2 21 lbs / 3000 ft2 Caliber 1.74 mils 1.81 mils TAPPIT 410om-9 Porosity 136 Gurley-sec. 42000 Gurley-sec TAPPIT 536om-96 ** Softness Seffield 71 Sheffield 135 Sheffield TAPPIT 538om-9 Rupture MD 18 grams force 18 grams force TAPPIT 414om-9 Ruptura CD 10.2 gms force 1 1.5 gms force Opacity 52% 58% TAPPIT 425 Wire 3M NA TAPPI 559om-96 Plush 3M NA Color L 94.6 93.2 Instrum. Datacolor (CIELAB / D50) Color at -0.08 -0.02 Color b 3.8 1 .6 Brilliance 84.8 85% TAPPIT 452om98 Turpentina 2 minutes 10 seconds TAPPIT 454om98 Folding RP-2 * 100% 14% RP-2 (Ralston Purina) *% weft stain after 140F for 24 hours (10 cm x 10 cm weft) ** seconds / 100 cc oil C. Description regarding Preferred materials to be used as the inner layer, in the packaging for microwave popcorn In the following Table 2, a comparative presentation is made of a paper treated with fluorocarbons and a paper not treated with fluorocarbons, each of which is acceptable for use in the preferred package for microwave popcorn. The designated "Y" paper is a fluorocarbon treated paper currently used as the inner layer of the microwave popcorn packaging of at least one commercial ConAgra product mentioned above. The product designated as Wausau grade 238-9577 is a highly refined non-treated fluorocarbon paper. *% weft stain after 140F for 24 hours (10 cm x 10 cm weft) ** seconds / 1 00 cc of oil lll. Preferred configurations for packaging A. General problems with microwave packaging The use of highly refined paper materials in accordance with the present invention will lead to improved grease resistance or fat retention characteristics of the microwell popcorn package, with relationship to what will be the case with such materials as with the papers used in conventional microwave popcorn arrangements that were not treated with fluorocarbons. However, the specific way to configure the package for microwave popcorn does not have a support in the general characteristics of fat test or grease retention of the package. A configuration that can be used for some applications is described in the United States Provisional Application for the United States that has serial number 60 / 544,873, filed on February 13, 2004, and entitled "Microwave Bag Construction with Seal Arrangement for Containing Oil / Fat; Microwave Popcorn Producf; and Methods ", which was filed as a US utility application and as a PCT application, the complete descriptions of which are incorporated herein by reference.The use of preferred materials not treated with fluorocarbons of the type herein characterized for such packaging leads to a product for Microwave popcorn is very useful, therefore, in connection with the figures in the following description, the construction is described: microwave popcorn arrays usually involve a collapsed package, which has an interactive sheet with microwave or susceptor placed operatively therein and with a load of microwave popcorn placed in a deck relationship or in a thermoconductive relationship with the interactive microwave construction.For many conventional arrangements, the packing is usually Folds in a three-fold configuration during storage and before use. Folds are typically placed at a moisture barrier level to improve the shelf life of the contents. Generally, microwave popcorn load comprises at least 50 grams of unpopped popcorn kernels and at least 20 grams of oil / fat, typically having a melting point below 54.4 ° C. Frequently, the popcorn load contains at least 60 grams of unpopped popcorn kernels and at least 25 grams of oil / fat, which has a melting point below 54.4 ° C. Such arrangements are illustrated in the aforementioned references, and generally, involve folded paper constructions where folds or folds are used along the paper, at the opposite side edges, where lateral packings are joined (or integrated). with two opposites face panels. A pair of opposite edge bends is usually located on opposite sides of a first face panel in a tube of the bag, with a second pair of opposite edge bends of a second face panel in a second opposite tube. . During the initial loading of a load of corn palomies into the bag, the popcorn load is usually placed in one of the two tubes, against a portion of the panel between the folded or folded side edges. Paper folding sometimes results in microfracturing the integrity of the paper, along the fold edge. When the load of popcorn is allowed to come into direct contact with the folded location of the microwave popcorn load, undesirable levels of runoff or infiltration of a fatty / oil material into the paper material can occur in the the location of the folded edges. Second, during microwaved trapping, oil / grease runoff or infiltration may occur along this same folded location. Even with highly refined papers, improved here characterized, it is expected that folding will bring some disadvantages. In microwave popcorn packaging, the runoff or infiltration adjacent to the folds or folds selected in the construction of microwave popcorn can be handled best when desired, unlike conventional arrangements. In some arrangements, this can be managed by providing patterns or arrangements of specific seal patterns within the package. In some cases, it can be handled by applying a material in the selected regions inside the package, to affect the surface tension between the oil and the inner layer of paper. For the latter case, the same type of material (adhesive) can be used as for stamps.

B. Arrangement of Figures 1 through 5 Reference number 1, in Figure 1 illustrates a package of microwave popcorn in accordance with the present invention. In Figure 1, the popcorn package 1 is illustrated in a conventional "three fold" configuration 2, for storage. In Figure 1, the three-fold pack 2 is sealed inside a storage envelope 3. A suitable storage envelope 3 will comprise a polypropylene, oriented in biaxial form, of 1 1 0-140 gauge, although other materials may be used. The wrapper 3 is discarded, when the popcorn packing 1 is removed from storage for use. In Figure 1, the packaging 1 is shown straight by an edge, typical when stored. The package 1 has two opposite sides 5, 6, each side 5, 6 is described in detail below, and comprises two outer edges with lateral packing, along which the folds are located. As indicated, the arrangement illustrated in Figure 1 is with "three bends". The invention is described and illustrated in connection with a bent arrangement, or with the intention of being bent, in three folds. However, it will be evident that techniques in accordance with the present invention can be used in other bending arrangements, that is, even with arrangements that are not folded with three bends for storage. In Figure 2, a visia is shown in top view, in schematic form of a package 1 in a non-folded configuration oriented in such a way as when placed in a microwave oven for the pop-up of the received popcorn load, but before its expansion. In Figure 2, lines 1 1 and 12 indicate bending lines that define the central region 1 3 in the array and that form the bends to make the three bends in Figure 1. In a central region 13, the popcorn load without bursting will generally be placed in an orientation against, and when oriented as in Figure 2, above, a portion of the package 1 is placed in the interactive construction of microwave. Here, in this context, the term "microwave interactive" is intended to refer to a material that absorbs energy and heats up, after exposure to microwave energy in a microwave oven. During the trapping operation, the moisture inside the popcorn kernels absorbs the microwave energy, which generates enough steam and heat to burst and expand the package 1. In addition, the interactive material with microwaves absorbs the microwave energy and dissipates the heat to the load of popcorn. In preferred constructions, the microwave interactive material occupies at least the central region 13 (internally) and is in greater heat conducting contact with a portion of that region than with any other interior portions of the popcorn package 1. That is, most of the interactive material with microwaves (by area or by weight) is placed in an electrically conductive counting with a region inside the bag, where the material interacfive with microwaves will be covered by the burst charge, when the package 1 It is placed in a microwave oven for use. This is preferred, since it leads to an efficient and preferred use of the interactive microwave material and also due to the preferred heat transfer or to the heat retention characteristics in connection with the popcorn trap process. This technique is also used in conventional arrangements, such as those in built-in references. Now, attention is directed to Figure 4, where a cross section taken generally along line 4-4 of Figure 2 is shown. From a review of Figure 4, it will be understood that the packaging of popcorn usually comprises a construction defining first and second panels 20, 21 opposite faces joined by a first and second lateral packings 22, 23 directed inwards, opposite. With "inwardly directed" in this context, it means in the cross-section that the packages 22, 23 of Figure 4, join or exceed one toward the other. In general, packages 22 and 23 separate the popcorn package 1 in a first and second expandable tubes 28 and 29. A load 30 of corn palms is placed and is essentially retained in one of the tubes, in this case, the tube 29. The other tube, the tube 28, before bursting, is generally collapsed. Cieramente, in preferred arrangements, the tube 28 is sealed closed with temporary heat seals, before the trapping operation. Still referring to Figure 4, the side pack 22 generally comprises folds or edge folds 33 directed outwards, the fold 34 is adjacent to the face panel 21 and the fold 33 is adjacent to the face panel 20, and fold 35 central, directed inwards. Similarly, the package 23 comprises folds or folds 38 and 39 directed outward and the central fold 40 directed inwardly.; the fold 39 is adjacent to the face panel 21 and the fold 38 is adjacent to the face panel 20. The package 1, for the arrangement shown in Figure 4, is folded from a sheet of two layers of material and the panel 20 includes a longitudinal seam 42, centered therein. Such bends as the bends 33, 34, 35, 38, 39 and 40 are known from flexible microwave packaging, for example, as shown in U.S. Patent Nos. 5,044,777; 5, 1 95.829; and 5,650,084. Under the load 30 of popcorn, the arrangement 1 includes an interactive construction with microwave or susceptor 45. The interactive construction with microwave or susceptor 45 may have a conventional design. In certain arrangements, such as that shown in Figure 4, the susceptor 45 is placed between the layers 46, 47 from which the flexible package 1 is bent. A typical interactive microwave construction comprises a flexible, metallized polyester sheet. Even with the susceptor 45 placed on the sheets 46, 47, the package 1 is called two layers. For the example shown, the suscepor 45 only occupies a portion of the area between the layers 46, 47. With reference still to Figure 4, a region 21 a is shown on a lower surface of the panel 21. The region 21 a defines a load reloading surface of un-popped popcorn. This is because the popped load 30 of popcorn is usually placed in contact with the surface 21 a, and usually sits on the surface 21 when the package 1 is placed in the microwave oven, for your trapping. With reference to Figure 4, the gasket 23 includes an adjacent panel section 49 and integrated with the face panel 21 and the gasket 22 includes an adjacent panel section 48 and integrated with the face panel 21. Attention is now directed to Figure 3. In Figure 3, a top plan view of a mold, panel or sheet 60 for a bag is shown, from which the arrangement can be folded in accordance with Figures 1 and 2 Many of the features illustrated in Figure 3 are analogous to the features shown and described in U.S. Patent Nos. 5, 195, 829; 5,044,777 and 5,650,084. As will be described in more detail below, a variety of sealing arrangements are used to provide the desirable characteristics of the package 1. Any of them can be implemented, as well as its variations, when desired. The indicated sealer fields are intended to provide an example of the system that can be used. The view of Figure 3 is what is sometimes called the "back side" of the sheet 60, that is, the side 65 of the sheet 60 that forms the inside surface of the assembled pack 1, of Figure 1. The side opposite the visible side of Figure 3 is sometimes called the "front side" and will form the outer surface of packing 1. Of course a mirror image arrangement is also possible. Referring still to Figure 3, the line segment 62 defines a region 63 into which most of the interactive microwave material will be placed, such as a microwave interactive material or construction or susceptor 45, for the preferred embodiments. The interactive microwave construction, for example, the susceptor 45 of Figure 4, will be placed inside the array, on the outside or between the layers 46, 47. In general, for the preferred embodiments, the susceptor 45 is placed between the layers 46, 47 of the sheet 60. With reference still to Figure 3, again the surface 65 seen is the surface which, when the package 1 has been folded, forms the inner surface of the package 1. The popcorn load 30, Figure 4, will eventually be placed on the central region 63. In Figure 3, line 66 usually indicates the place where fold 34 will be formed and line 67, usually indicates the place where bend 39 will be formed, Figure 4. Folds or creases 34 , 39 are usually folds or folds directed outwardly into the packages 22, 23 on the opposite side adjacent to the face 21. The surface 21 a, for placing a popcorn load therein, during use extends between the folds 34, 39. The line 68 corresponds to the fold 35 (Figure 4); line 69 with fold 40 (Figure 4); line 70 with fold 33 (Figure 4) and line 71 with fold 38 (Figure 4). Thus, the region 75, between the fold lines 68 and 66 will generally define the packing panel section 48, Figure 4 and the region 77 between the fold lines 67 and 69 will generally define the section 49 of packaging panel, Figure 4. In general, the three folds, of Figure 1, will be formed by folding the total package 1 so that it is folded along lines 80 and 81, respectively. It should be understood that the latter, generally folded, will be made after the construction of the bag, Figure 2, has been assembled. Line 81, will form the lower edge, Figure 1. With reference to Figures 3 and 2, line 80 will form the bend 1 1 and line 81 will form the fold 12. With reference to Figure 3, the sealant field 84 along the edge 84a placed on an opposite side of the blade 60 on the side 65, is used to couple the field 85 (placed along the edge 85a), during bending (with applied heat and pressure), to form a longitudinal seam or seal 42, Figure 4. Also, it will be it is evident that, during bending, several portions of the field 89 along the edge 89a on the side 65 will align with each other to form several portions of the end seal 90, Figure 2 (with the application of heat and pressure) and several portions of the field 92, along the edge 92a on the side 65, Figure 3, will align with each other to form an edge 93, Figure 2, with the application of heat and pressure. In general, the field 92 will form an upper edge of the entire bag, through which the popped popcorn is removed, after the trap. The sealing fields 95 and 96 on an opposite side of the sheet 60, Figure 3, will be aligned with each other, as they are folded around the fold line 68, and heat and pressure are applied to help secure the sheet 60 in a preferred configuration, along end 90, Figure 2, after bending. This is similar to what is done with the arrangement of U.S. Patent No. 5, 195,829, Figure 1 a. Similarly, the seal fields 98 and 99 on the underside of the sheet 60, FIG. 3, are aligned with each other when the panel is bent around the fold line 69, also to provide a secure end and a configuration preferred end to end 90, Figure 2, when heat and pressure are applied. Attention is now directed to fields 103, 1 04, 105, 106, 107, 1 08, 1 09 and 1 10 of sealant. Analogous fields are shown in U.S. Patent No. 5, 195,829, Figure 1. During bending, the portions of the fields 103-1 10 are aligned with each other to retain the selected portions of the paper adhered to each other (after application of heat and pressure) to provide a preferred configuration during expansion. In particular, field 103 is coupled to field 104, field 105 is coupled to field 106, field 108 is coupled to field 107, and field 1 1 0 is coupled to field 109, during bending and after applying heat and pressure. The coupling between the fields 1 05 and 106, and also between the fields 1 08 and 1 07, tend to retain the selected portions of panels 48 and 49 against the panel 21, Figure 4, in regions where the load is not located. Popcorn in the fold or three collapsed folds 2 (Figure 1). Sealer field 103 folded and sealed against field 1 04, and field 1 1 0 bent against field 1 09 help to collect panels 1 15 and 1 16 sealed against panel 20, Figure 4, in the three collapsed folds . This helps ensure that the popcorn load 30, Figure 4, is retained when desired in the array. The advantages of this are described in par., In U.S. Pat. No. 5,195,829. Referring again to Figure 3, attention is now directed to sealer fields 120, 121, 122, 123. When the arrangement is folded over the fold line 66, the sealant field 120 is aligned with (and with heat and porosity sealed with) the sealant field 121, and when the array is bent over the fold line 67, the sealant field 123 is aligned with (and with the application of heat and pressure is sealed with) the sealant field 122. Coupling between fields 120, 121 (with porosity and heat) also ensures that panel 48 is sealed against panel 21 (Figure 4), and the coupling between fields 123 and 122 (with heat and pressure) also ensures that the panel 49 is sealed against panel 21, in regions where the popcorn load 30 is not placed. This is similar to the use of the fields in Figure 1 of U.S. Patent No. 5,195,829. The shape and direction of the fields 105, 106, 107, 1 08, 120, 121, 122 and 123 help to ensure that the central section 63 is relatively flat, since the packing 1 expands during use under the steam of the Popped popcorn. Attention is now directed to fields 129, 130, 133 and 134 of sealant. In the preferred embodiment shown, these are also used to ensure that the panels 1 1 5 and 1 16 are sealed against the panel 20, Figure 4, so that the load 30 of popcorn is essentially reended in the tube 29 (FIG. 4) and does not expand or distribute in tube 28 until desired during heating. In particular, the fields 129 and 130 are oriented to mate with each other, when the array is bent over the fold line 70 (with the application of heat and pressure) and the fields 133 and 134 are oriented to mate with each other, when the The arrangement is bent over the fold line 71 (with the application of heat and pressure). The stamps of the type associated with fields 129, 130, 133, 134 have been used in previous constructions. For example, see U.S. Patent No. 5,044,777, Figure 1. In general, the seal results from the application of heat and pressure, after bending in the region where the sealant is located. It should be noted that for several seals described, the sealant is placed on both attached paper surfaces. This is very convenient. However, when the sealant is only placed on one side, and the two sides are folded together with the continuous application of heat and pressure, a seal can be formed. It should be noted that the described sealer fields are configured to form seals with the application of heat and pressure. Alternative types of seals can be implemented, for example, cold seals in accordance with the present invention. A seal arrangement can be provided to help maintain the popcorn load, prior to trapping, separated from the undesirable levels of direct contact with the folds in the fold lines 66, 67, Figure 3, ie, the folds 34 , 39, Figure 4. This technique can be applied with the preferred paper materials described herein, but in some cases, it will not be preferred. With respect to the fold line 66, attention is directed to the sealant fields 150, 151 and with respect to the fold line 67, attention is directed to the sealant fields 153, 154. It should be noted that for the preferred arrangement shown, the fields 150, 151 are integrated with each other, and are joined in the fold line 60, and that similarly, the fields 153, 1 54 are integrated with each other and merge into each other. the fold line 67, although this is not required. (In other words, preferably, the fields 150, 151 are parts of a single field with the fold line 60 therethrough and preferably, the fields 153, 154 are part of a single field with the line 67 of fold through it). When bending is performed on fold line 66, field 51 of sealant will overlap with field 150 of sealant, with the fold of the packing isolating seal 155, Figure 4, which results in providing heat and pressure appropriate. Similarly, when it is folded over fold line 67, field 154 will overlap with field 153, with the fold of the gasket that isolates seal 156, Figure 4, which resets when heat and pressure are applied properly. When the popcorn load is placed in region 63, the load of popcorn and the components such as oil / fat therein, are impeded from flowing ie reaching the folds or creases 66, 67 (it is say, the folds in 34, 39 of Figure 4), due to the presence of seals 1 55, 156.

Seals 1 55, 156 can be configured to be released, due to exposure to steam and heat during the pop-up operation of the microwave popcorn, if desired. However, the release is typically not preferred, when these seals are used. As described herein, some seals of stamps 1 55, 156 are sometimes referred to as "seals" with respect to an associated fold (typically adjacent). This is because the seals insulate the crease or fold, during the storage of the package 1, with respect to the flow of material from the load of maize palomies, for direct contact with the associated fold or fold. Thus, seal 1 55 is an insulating sealing field with respect to bending or folding along line 66 to form fold or fold 34 (Figure 4); and field 156 is an insulating sealing field with respect to fold or crease line 67, i.e., crease or fold 39 (Figure 4). With reference to Figure 3, it should be noted that, preferably, the fields 150, 151, 153 and 154 are coninuous, that is, without spaces between them, in extension along the folds 66, 67, respectively, which define the edges 63a, 63b of the 63rd region. This continuous nature of the sealant fields and the resulting seals 155, 156 (FIG. 4) helps to prevent undesirable drainage or infiltration in the creases caused in the folds 66, 69. It should be noted that some beneficial results may be obtained when the insulating fields are not continuous, since the spaces are sufficiently small. When used, the preferred longitude of fields 1 50, 151 and 1 53, 154 is preferably at least 20% (usually, at least 25% and typically at least 30%) of the full length of the packing (or length of the folds 66, 69) between the ends 190, 193 (Figure 2). More preferably, each is at least 45% of the length of the package 1, Figure 2, or of the folds 66, 69, Figure 3, more preferably and typically the length of the fields 1 50, 151, 153 154, in the lateral direction of the packing extension is 50% -60% of the total length of the package 1, or of the folds 66, 69 (Figure 3) between the ends 90, 93. While several alternatives are possible, these they will be the preferred stamps. In Figure 3, the portions of the sheet 60 that form the ends 90, 93, Figure 2, are the edges 92a and 89a, respectively. When used, more preferably, the seals 155, 156 are at least placed and are configured to extend continuously between the folds 80, 81, of the three folds (corresponding to the folds 1 1, 12, respectively, Figure 2) . From Figure 3 it can be seen that the sealant fields forming the seals 155, 156 extend more than them. More preferably, when used, the fields 150, 151, 153, 154 of Figure 3 end with the exits separated from their associated edges 92a, 89a of the packing sheet 60, which corresponds to the exits 90, 93 of the folded packing 1, Figure 2. Preferably, the spacing is at least 70 mm (eg, about 80-95 mm) from the edge 89 a and at least 70 mm from the edge 92 a. The separation will not necessarily be the same, from each edge 89a, 92a. Certainly, in the modality shown, it is not the same.

With reference to Figure 3, attention is now directed to fields 1 60, 161, 1 62, 163, 1 64, 165 and 1 66 of sealant. During the bending on line 66, field 160 will overlap field 161, with the formation of a seal between them, after the application of heat and pressure. During bending on line 67, field 162 will overlap with field 1 63, with the formation of a seal between them, after the application of heat and pressure. Region 164 will be sealed with regions 165, 166 when it is bent over lines 68, 70, 69 and 71, after the application of heat and pressure. It should be noted that region 151 a of field 160 of sealant is also part of field 150. Similarly, region 150a in region 161 is also part of region 150. Also, region 153a of field 163 is part of the field 153, and region 154a of region 162 is part of region 154. The net result will be the formation of a region in the folded package 1 1 of a transverse containment seal extended between the 155, 156 insulating bead seal. packaging, Figure 4. This sealing field will help contain the oil / fat inside the popcorn 30, at a location between the stamps 155, 156, Figure 4, and also at a location above the center 63, during storage and the use. The seal of transversal containment preferably is continuous in extension between the seals 1 55, 1 56 insulators although alternative ores are possible. It should be noted that as a result of seals 155, 156 (and the presence of a transverse sealant field results from the overlap of fields 160, 161, 162, 163, 164, 165 and 1 66) an insulated bag of three is formed sides around the center 63 (Figure 3) of a portion 21 a of top (Figure 4), where the load of popcorn is stored, during use. It should also be noted that throughout the region 1 68, Figure 3, there is no transverse seal to the product in the modality shown. However, a second cross-product seal may be located through region 168, if desired. The seals formed by the fields 160, 161, 162, 163, 164, 165 and 166 can be resealable seals, i.e., such that the heat, steam and expansion of the bag during the trapping operation, will usually open this seal . In some cases it will be desirable to provide a continuous adhesive in certain locations, and discontinuous adhesive in others. In Figure 3, the fields indicated in 200, with the dotted pattern indicate a preferred location to have a continuous coverage, depending in part, on the nature of the paper used for layers 46, 47. This is because the sealant preferably, it is selected to provide some beneficial fat-proofing effect. In regions that are not dotted, it is expected that discontinuous coverage can be used. With reference to Figure 4, preferably, the seals 155, 156 are at least 0.25 cm wide, typically and preferably, at least 0.5 cm wide, typically approximately 0.8-1.4 cm wide. In this context, "width" is the extension distance inward, that is, one towards the other, from the edges 155a, 156a, respectively. Seals 1 55, 156 of course do not need to be of a constant width, although they are displayed in this way. It should be noted that in some cases, depending on the oil / fat composition of the microwave popcorn load, with the arrangements in accordance with Figures 3 and 4, the migration of liquid oil to the weak portions or locations of Stress can be a problem. When this is the case, adhesive fields or other surface treatments can be applied at various locations in the arrangement, to change the surface tension of the paper and thus change the migration characteristics of the oil. Such an adhesive did not need to be sealed between the substrates to provide this effect. Rather, this effect is a change in surface tension or a change in the surface characteristic of the material (ie, inside the inner layer) where it is applied. Preferably, a non-fluorocarbon treatment agent such as PWF 3007, available from H.B. Fuller, St. Paul, MN. The PWF 3007 product is a polyvinyl acetyl adhesive.

C. A specific example; PREFERRED SEALANT MATERIALS From the following example and the general characterizations of the preferred materials, a wide variety of applications of the principles of the present invention may be understood. Consider, for example, a typical popcorn product that contains a load of approximately 20-90 grams, typically approximately 60-75 grams of popcorn. The filler may be conventional and may contain oil / fat and / or flavorings, with a total weight of approximately 90-100 grams. Typically, the problem for which the present invention provides an advantageous solution, relates to the reduction of undesired levels of oil / grease runoff through the sidewall of the package during storage and handling. For an example of such an arrangement, sheet 60, Figure 3, will have a rectangular configuration with exterior dimensions of approximately 29.5 cm by 53.3 cm. The different fold lines will be oriented so that region 63, defined by line 62, will have an outer perimeter of approximately 14.3 cm by 16.5 cm. The multilayer laminate for the sheet 60 may comprise the following materials: although other alternatives are possible. The sheet of paper not brought with fluorocarbons that forms the outer surface of the bag, when folded will be 238-9696 Wausau grade or a similar paper with the preferred characteristics described above. The sheet of paper not treated with fluorocarbons that forms the innermost paper layer will be Wausau grade 238-9577 or a similar paper with the preferred features described herein. The susceptor arrangement or interactive microwave material will preferably be placed between the two layers. The microwave interactive material preferably will comprise a metallized polyester such as Saehan America, Fort Lee, N.J. , a polyester film (typically 48 gauge) vacuum-metallized with aluminum to give a density of 0.25 +/- 0.05 as measured by a Tobias densitometer. Companies that can prepare such material include: Rolvac, Windham NH; and Vacumeí Corp., Wood Dale, IL. In general, for the preferred embodiment described, the same adhesive (e.g., PWF 3007, H. B. Fuller, St. Paul, MN) is used as the adhesive in all locations on the back side of the packaging mold. For these seals that must be released as the bag expands, typically the seal is formed with low porosity, as compared to other locations, on less contact surface area between the insured surfaces, or both. You can use conventional techniques to achieve this. For the adhesive laminated between layers, the product PWF 3007 or PWF 8540 (also available from H.B. Fuller) can be used. The PWF 8540 is a vinyl ether acetate polyvinyl alcohol (EVA-PVOH) adhesive and can be used to improve the oil-proof property.

Now we turn our attention to Figure 5, where several dimensions and angles are indicated with letters. These provide an example of a package that can be used. The dimensions for the particular example shown are as follows: (A) 53.3 cm; (B) 8.73 cm; (C) 5.24 cm; (D) 5.24 cm; (E) 14.9 cm; (F) 2.54 cm; (G) 2.18 cm; (H) 7.46 cm; (I) 37 °; (J) 0.953 cm; (K) 14.3 cm; (L) 1.27 cm; (M) 6.51 cm; (N) 14.9 cm; (O) 13.2 cm; (P) 16.5 cm; (Q) 4.29 cm; (R) 0.51 cm; (S) 2.94 cm; (T) 0.48 cm; (U) 29.5 cm; (V) 10.2 cm; (W) 9.21 cm; (X) 3.49 cm; (Y) 12.7 cm; (Z) 14.8 cm; (A) 6.67 cm; (BB) 0.32 cm; (CC) 0.64 cm; (DD) 9.21 cm; (ES) 1.59 cm; (FF) 0.56 cm; (GG) 0.159 cm. Other dimensions will be to scale. It should be anticipated that arrangements in accordance with the example can be easily formed in a continuous process, from a sheet material or raw material, which has a seal material applied therein, as well as by training or filling methods or techniques / horizontal sealing. You can also use conventional bending equipment and equipment to place a load of popcorn inside the array.

D. Some optional variations of the bag. In this section, in connection with Figures 6 and 7, alternative adhesive patterns are provided to form a bag in accordance with Figure 4, except for the modifications made by the following description. The adhesive fields illustrated in Figures 6 and 7 are similar to those of Figures 3 and 5, with alternative adhesives and seal locations provided as an example. Attention is now directed to Figure 6. Figure 6 shows a top plan view of a mold, panel or pouch sheet 260, from which an alternative arrangement can be folded in accordance with Figure 1. Many of the features illustrated in Figure 6 are similar to the features shown and described in U.S. Patent Nos. 5, 195,829; 5,044,777 and 5,650,084, as well as with respect to Figure 3. As will be described in detail below, a variety of sealant arrangements are used to provide the desirable characteristics of the package 1. The different combinations of scenarios can be implemented, as well as their variations, if desired. The indicated sealer fields are intended to provide examples of the arrangements that may be used. As will be apparent from the following descriptions, in Figure 6, the sealer fields are indicated used alternatively or optionally, to provide the desirable arrangements. This will be understood from the following descriptions.

The view of Figure 6 is what is sometimes called the "back side" of the sheet 260, ie the side 265 of the sheet 260 that forms the inside surface of the assembled package 1, Figure 1. The opposite side of the visible side in Figure 6 is sometimes called the "front side" and will form the outer surface of the gasket 1. Of course a mirror arrangement is also possible. Still with reference to Figure 6, line segment 262 defines a region 263 within which, in most preferred embodiments, the majority of the interactive microwave material, such as susceptor 45, Figure 4, will be associated. The interactive construction with microwaves for example, the susceptor 45, Figure 4, can be placed inside the array, on the outside or between the layers 46, 47. In general, for the preferred embodiments, the susceptor 45 is placed between the layers 46, 47 of the mold 260. With reference still to Figure 6, again the surface 265 seen is the surface that when the package 1 is bent forms the inner surface of the package 1. The popcorn load 30, Figure 4, will be placed on the central region 263. With reference still to Figure 6, the line 266 usually indicates the place where the fold 34 will be formed, Figure 4, and the line 267 generally indicates where the fold 39 will be formed, Figure 4. The folds or creases 34, 39 are usually folds or folds directed outward in the opposite side packagings 22, 23 adjacent to a face 21. The surface 21 a for placing a popcorn load therein, during use, extends between the folds 34, 39. The line 268 corresponds to the fold 35 (Figure 4), the line 269 with the fold 40 (Figure 4); line 270 with bend 33 (Figure 4); and line 271 with fold 38 (Figure 4). Thus, region 275, between bending lines 268 and 266 generally define packing panel section 48, Figure 4, and region 277 between bending lines 267 and 269 will generally define the section 49 of the packing panel, Figure 4. In general, the triple fold, Figure 1, is eventually formed by folding the general packing 1 so that it is folded along a separate perpendicular to the lines 266, 267, 268, 269, 270, 271. It should be understood that this last bend will be after the construction of the bag has been assembled, Figure 2. With reference to Figure 6, the sealant field 284, together with the edge 284a placed on an opposite side of the panels 260 from the side 265, is used to couple the field 285 along the edge 285a, during bending (typically with applied heat and pressure) to form the side seam or seal 42, Figure 4. Also, it should be appreciated, that during bending, several portions of the field 289 along the edge 289a on the side 265 will align with each other to form several portions of the seal 90 of extreme, Figure 2 (typically with the application of heat and pressure); and several portions of the field 292, along the edge 292a on the side 265, Figure 6, will be aligned with each other to form the end seal 93, Figure 2, typically with the application of heat and pressure. In general, field 292 will form an upper edge of the entire bag, through which the popped popcorn is removed, after the trap. Sealer fields 295, 296 on the opposite side of panel 260, Figure 6, will be aligned with each other, when bending around fold line 268, heat and pressure are applied to help secure panel 260 in a preferred configuration , along end 90, Figure 2, after bending. This is similar to what is done in the arrangement of U.S. Patent No. 5,195,829, Figure 1 a. Similarly, the seal fields 298 and 299 on the bottom side of the panel 260, Figure 6, are aligned with each other when the panel is bent over the fold line 269, also to provide a secure end and a preferred configuration of end to end 90, Figure 2, when heat and pressure are applied. Attention is now directed to fields 303, 304, 305, 306, 307, 308, 309 and 310 of sealant. Similar fields are shown in U.S. Patent No. 5, 195,829. During bending, the portions of the fields 303-31 0 align with each other to retain the selected portions of the panel adhered to each other (typically, after the application of heat and pressure) to provide the preferred configuration during expansion. In particular, field 303 is coupled with field 304, field 305 is coupled with field 306, field 308 is coupled with field 307, and field 310 is coupled with field 309 during bending and with the application of heat and pressure. Coupling between fields 305 and 306 and also between fields 308 and 307 tends to contain selected portions of panels 48 and 49 against panel 21, Figure 4, in regions where the popcorn load is not located in a collapsed fold or triple-fold 2 (Figure 1). Field 303 of sealant bent and sealed against field 304 and field 31 0 bent against field 309, help ensure that popcorn load 30, Figure 4, is retained at the desired location in the array. The advantages of this are described, in part, in United States Patent No. 5,195,829. Still referring to Figure 6, fields 303a-310a indicate the optional extensions for fields 303, 31 0, respectively, to create a V shape or triangular with overlapping stamps. This can be achieved and used in the popcorn packaging, as indicated in U.S. Patent No. 5,195,829. However, these optional portions 303a-31a can be avoided, advantageously. This is because these optional portions 303-31 0 are projected at an appropriate angle to generate the desirable seal in the folded array, without necessarily utilizing the complete triangular shape. It should be noted that for the bag arrangement of US 5, 195,829 triangular fields, adjacent to regions 92, were also used. For the particular arrangements shown in Figure 6, these will not be shown. It is expected that such fields will be used in the preferred arrangements. However, it should be noted that they can be used optionally. Attention is now directed to fields 329, 330, 333 and 334 of sealant. In the preferred embodiment shown, these were used to ensure that panels 31 5 and 316 are sealed against panel 20, Figure 4, so that popcorn load 30 is essentially retained in tube 29 (Figure 4) and that do not expand or extend inside the tube 28, until the desired heating. In particular, the fields 329 and 330 are oriented to mate with each other, when the array is bent over the fold line 270 (with the application of heat and pressure) and the fields 333 and 334 are oriented to mate with each other, when the arrangement is folded over the fold line 271 (with the application of heat and pressure). The stamps of the type associated with the fields 329, 330, 333, 334 have been drawn in several previous constructions. For example, consult United States Patent No. 5,044,777. In general, the sealing results from the application of heat and pressure, after bending, to the region where the sealant is located. It should be noted that for several described seals, the sealant is placed on both adhered paper surfaces. This is convenient. However, when the sealant is only placed on one side, and the two sides are folded together with the continuous application of porosity and heat, a seal can be formed. It should be noted that the sealing fields described are configured to form seals with the application of heat and pressure. Alternative types of seals, for example, cold seals, can be implemented in arrangements in accordance with the present invention. In the remaining description of the sealant fields on the surface 265 of the array 260 of the package, Figure 6, options are provided for handling and controlling the flow characteristics and oil / fat infiltration in the popcorn load, during the storage, handling and use. It should be noted that sealant fields are used in one of two ways, as follows: first, the sealant field can be used to form an insulating seal, to manage the location of the oil / grease by isolating it from the portions of the package. Secondly, the application of a sealer to the surface of the paper changes the properties of the surface tension of that surface, and in this way, its interaction with the grease / oil material. In general, the properties of the sealants used will operate for some containment of grease / grease in non-ferrous locations. Thus, the sealant fields can be applied to the paper at preferred locations where it is desired to prevent the flow of acrylic / grease material as it is liquefied. Both of these properties are described below, and options are provided to implement them. For example, a seal arrangement can be provided that helps maintain the popcorn load, prior to its trapping, separated from the undesired levels of direct contact with the folds in the fold lines 266, 267, Figure 6, that is, the folds 34, 39 of Figure 4. This technique is described in the Provisional document of US 60 / 544,873. With respect to the bend line 266, attention is directed to the sealant fields 350, 351 and with respect to the bend line 267, attention is directed to the sealant fields 353, 354. It should be noted that for the optional array, the fields 350, 351 are integrated with each other, and reach the fold line 260, and that similarly, the fields 353, 354 are integrated with each other and reach the fold line 267. , although this is not required. (In other words, the fields 350, 351 are part of a single field with the fold line 260, through it, and preferably, the fields 353, 354 are part of a single field with the fold line 267 through it).

When bending is carried out on the fold line 266, the sealant field 351 is interlaced with the field 350 of the sealant, with the sealing seal 155 of the packing, Figure 4, which results from the provision of heat and pressure. Similarly, when it is folded over fold line 267, field 354 overlaps with field 353, with the seal 156 of the fold of the package, Figure 4, which reseals when heat and pressure are applied. When the popcorn load is placed in the region 263, the popcorn load and the oil / fat components therein can be prevented from flowing to the folds 266, 267 (i.e. folds 34, 39, Figure 4) due to the presence of seals 1 55, 156. Seals 155, 156 are typically configured to be released, after exposure to steam and heat during the pop-up operation of the microwave popcorn . Again, the stamps of type 155, 1 56, are sometimes called "insulating seals" with respect to an associated fold or fold (typically adjacent). This is because these seals isolate the fold or bend during the storage of the package 1, with respect to the flow of material from within the popcorn load, for direct contact with the associated fold or fold. Thus, seal 1 55 is a field of insulating sealant with respect to bending or folding along line 266 to form fold or fold 34 (Figure 4); and field 156 is an insulating sealant field with respect to fold or crease line 267, i.e., crease or fold 39 (Figure 4). With reference to Figure 6, it should be noted that if used preferentially, the fields 350, 351, 353, and 354 are continuous, ie, without gaps between them, extended along the folds 266, 267. continuous nature of the sealant fields, and the seals 155, 156 results (Figure 4) help to prevent undesirable drainage or infiltration in the creases caused in the folds 266, 269. It should be noted that some beneficial results may be obtained when the isolated fields are not continuous. When used, the preferred total length of fields 350, 351 and 353, 354 is preferably at least 20% (usually, at least 25% and typically at least 30%) of the full length of the package ( or length of the folds 266, 269) between the ends 90, 93 (Figure 2). More preferably, each is at least 45% of the length of the package 1, Figure 2, or of the folds 266, 269, Figure 6, more preferably and typically the length of the fields 350, 351, 353, 354 in the lateral direction of the packing extension is 50% -60% of the total length of package 1, or of the folds 266, 269 (Figure 7) between the ends 90, 93. While several alternatives are possible, these will be the favorite stamps. In Figure 6, the portions of the mold 260 that form the ends 90, 93, Figure 2, are the edges 292a and 289a, respectively. When used, more preferably, the seals 155, 156 are placed at least and are configured to extend continuously between the folds of the three folds (corresponding to the folds 1 1, 12, respectively, Figure 2). More preferably, when used, the fields 350, 351, 353, 354 of Figure 6 end with the ends separated from their associated edges 292a, 289a of the packaging mold 260, which corresponds to the ends 90, 93 of the packaging 1 folded, Figure 2. Preferably, the spacing is at least 70 mm (eg, approximately 80-95 mm) from the edge 289a and at least 70mm from the edge 292a. The separation will not necessarily be the same, from each edge 289a, 292a. Certainly, in the modality shown, it is not the same. It should be noted that a transverse seal between location 360, 361 similar to that described in the provisional patent application 60/544 can also be used., 873. In some arrangements it may be desirable not to use continuous seals provided by fields 350, 351 and 353, 354. In some applications, it may be desirable to simply provide seals formed by region 363, 364, 365, 366, 367, 368 and 369, 379 when folded along the lines 266, 267. Specifically, the fields 363, 364 comprise circular spots of adhesive on the lines 266, and the fields 365, 366 similarly form a circular field of adhesive on the line 266 When folded along line 266, these fields can form tabs of sealed adhesive adjacent to the resulting packing bend 34, Figure 4, at these locations. This can help contain the oil / grease material, without the use of continuous seals. A similar effect is achieved along the fold line 267, through the seals formed by a circular pattern from the fields 367, 368 and 369, 370. Of course, circular shapes can be used for the fields 363-370. In some embodiments, it may be desirable to provide adhesive on region 263, in the areas indicated at 375, 376 leaving a central area 377 free of adhesive. In general, the oil / grease does not flow over the sealant field, but it does flow on the surface of untreated paper, especially when the paper surface is not treated with fluorocarbon. In this way, the sealant fields 375, 376 can assist in conforming the oil / grease material placed in region 377. Similarly, sealant treatment in regions 380 can be used for this purpose. That is, seals will not be formed, rather they comprise top-of-the-line arrangements to prevent the undesirable flow of oil / grease material from region 377.. The above characteristics are optional, and can be used for different effects depending on the materials involved. With respect to the interlayer adhesive, in some cases, it will be desirable to provide a coninuous adhesive in certain locations or a discontinuous adhesive in others. In Figure 6, the fields indicated in 400, with the dotted pattern, are indicated in the preferred location to have full coverage, depending, in part, on the nature of the paper used for the folds 46, 47. This is due to to which the sealant can preferably be selected to provide some beneficial fat-proofing effects. In regions 401 that are not dotted, discontinuous adhesive coverage is expected, for example, as described in 5,753,895.; 5,928,554; and 6,396,036, each incorporated herein by reference.

With reference to Figure 4, when used, the seals 155, 156 are at least 0.25 cm wide, typically and preferably, at least 0.5 cm wide, typically at least 0.8-1.4 cm wide. In this context, "width" is the extension distance inward, that is, one towards the other, from the edges 155a, 156a, respectively. Seals 155, 156 of course do not need to be of a constant width, although they are shown in this way. Attention is now directed to Figure 7. Figure 7 is a view similar to Figure 6, except with letter designations for certain dimensions. The dimensions provided here are for an example and are as follows: (A) 53.3 cm; (B) 8.7 cm; (C) 5.2 cm; (D) 5.2 cm; (E) 14.9 cm; (F) 5.2 cm; (G) 5.2 cm; (H) 8.7 cm; (I) 2.5 cm; (J) 7.5 cm; (K) 0.5 cm; (L) 2.9 cm; (M) 2.2 cm; (N) 0.5 cm; (O) 25.4 cm; (P) 14.3 cm; (Q) 1 .3 cm; (R) 1.3 cm; (S) 6.5 cm; (T) 14.9 cm; (U) 29.5 cm; (V) 10.2 cm; (W) 10.2 cm; (X) 9.2 cm; (Y) 1 .3 cm; (Z) 1 .3 cm; (A) 1 .9 cm in diameter; (BB) 16.5 cm; (CC) 4.3 cm; (DD) 14.8 cm; (EE) 0.3 cm; (FF) 2.5 cm; (GG) 0.6 cm, (HH) 9.2 cm; (I I) 0.3 cm; (JJ) 0.6 cm; (KK) 37 °; (LL) 1 .6 cm; (MM) 0.6 cm; (NN) 0.2 cm; (OO) 2.5 cm; (PP) 1 3.2 cm. Other dimensions will be to scale. When a paper not treated with fluorocarbons is used in the section, the following adhesives are examples of the materials that can be used. First, for an adhesive on the surface, the applied adhesive on the surface 65, PWF 3007, available from H. B. Fuller, St. Paul, Minnesota, can be used. For the adhesive in the regions 201 and 200 between the layers, such as a laminated adhesive, the product PWF 8540, also available from H. B. Fuller, can be used.

E. Some general observations In accordance with the foregoing, generally, a preferred microwave popcorn product with respect to avoiding fluorocarbon-treated packaging materials results when the defined preferred papers are used. Also, preferably, the package is a folded bag having a bag interior and includes first and second opposing face panels joined by opposing inward side packings. When the arrangement is used, a popcorn load is placed on the interior surface or against the interior surface of the first face panel. In addition, an advantageous arrangement is provided wherein the interactive microwave construction is placed associated with a bag, between two layers. The interactive microwave construction is provided in heat-conducting contact with a popcorn charge holding surface, i.e., a portion is placed inside the bag against the microwave popcorn charge.

Claims (6)

REVIVAL DICTION EN

1 . An array of microwave popcorn, characterized in that it comprises: (a) a folded bag arrangement having an interior and comprising an inner layer of an unaltered fluorocarbon paper and an outer layer of a paper not supplied with fluorocarbon; (i) the inner layer has a porosity no greater than 300,000 Gurley-sec; and (ii) the outer layer has a porosity no greater than 30,000 Gurley-sec.; and (b) a popcorn load that includes un-popped popcorn kernels and an oil / fat component placed within the interior of the bag.

2. The microwave popcorn arrangement according to claim 1, characterized in that: (a) the inner layer has a porosity not greater than 600,000 Gurley-sec. , and (b) the outer layer has a porosity no greater than 35,000 Gurley-sec.

3. The microwave popcorn arrangement according to claim 2, characterized in that (a) the inner layer has a porosity no greater than 950,000 Gurley-sec. , and (b) the outer layer has a porosity no greater than 40,000 Gurley-sec.

4. The popcorn microwave arrangement according to claim 3, characterized in that it includes: (a) an interactive microwave construction placed between the inner layer of untreated paper with fluorocarbon and the outer layer of a paper not treated with fluorocarbon.

5. The microwave popcorn arrangement according to claim 4, characterized in that: (a) the maize popcorn load comprises: at least 50 grams of popped popcorn kernels, and at least 20 grams of an oil / fat component that has a melting point not greater than 54.4 ° C.

6. The microwave popcorn arrangement according to claim 5, characterized in that: (a) the folded bag comprises first and second opposed face panels joined by a first and second lateral packings facing inward, opposite. SUMMARY A bag arrangement for microwave corn palms is provided. The bag includes a multi-layered construction, wherein one or more of the layers comprises a paper not treated with fluorocarbon. A preferred arrangement of two layers is provided, with a preferred porosity of a non-traced paper with fluorocarbons as the inner layer and the outer layer. The techniques for folding the bag arrangement are provided, which offers a desirable configuration.