The disclosures of U.S. Provisional Patent Application No. 62/122,453, filed Oct. 21, 2014, U.S. Provisional Patent Application No. 62/179,172, filed Apr. 29, 2015, U.S. Provisional Patent Application No. 62/179,480, filed on May 8, 2015, U.S. patent application Ser. No. 14/919,072, filed Oct. 21, 2015, and U.S. patent application Ser. No. 15/142,103, filed Apr. 29, 2016, are hereby incorporated by reference for all purposes as if presented herein in their entirety.
The present disclosure generally relates to reinforced packages for holding products and to methods of forming the packages. More specifically, the present disclosure is directed to methods and systems for forming the packages including a liner having a gusseted bottom portion and a reinforcing construct attached to the liner.
Bags or liners, such as paper or plastic bags, traditionally have been used for the packaging and transport of products from bulk materials such as rice or sand to larger items. Bags or liners generally are inexpensive and easy to manufacture and can be formed in different configurations and sizes, and can be used for storage and transport of a wide variety of products. In particular, in the Fast Food industry, bags or liners are frequently used for packaging of prepared food items, such as sandwiches, etc. Currently, there is a growing demand for bags or liners or similar packages for use in packaging various products, including sandwiches, French fries, and other prepared food items, for presentation to consumers. However, it is equally important that the costs of such packages necessarily must be minimized as much as possible. While various packages designs including reinforcing or supporting materials have been developed, often, the manufacture of such specialty bags or liners having reinforcing layers or materials supplied thereto has required multiple stages or operations, which can significantly increase the cost of manufacture of such packages.
In general, one aspect of the disclosure is directed to a method of forming reinforced packages. The method can comprise forming an attached web by adhering a construct to a web of material, and moving the attached web in a downstream direction through at least a web edge forming assembly. The moving the attached web can comprise moving the construct with the web of material. The method further can include at least partially forming a folded web by folding at least a portion of the web of material as the attached web moves through the web folding assembly and forming a reinforced package comprising a liner and the construct by separating the liner from a remainder of the folded web. The construct can be adhered to the liner.
In another aspect, the disclosure is generally directed to a system for forming reinforced packages. The system can comprise an attachment assembly receiving a web of material and a construct. The attachment assembly can bring the construct into engagement with the web of material for forming an attached web. A web edge forming assembly can be disposed downstream from the attachment assembly. The web edge forming assembly can receive the attached web and can comprise web folding features for folding at least a portion of the web of material to at least partially form a folded web. A cutting assembly can comprise cutting features for separating a liner from a remainder of the folded web to at least partially form a reinforced package comprising the liner attached to the construct.
Additional aspects, features, and advantages of the present invention will become apparent from the following description and accompanying figures.
Those skilled in the art will appreciate the above stated advantages and other advantages and benefits of various additional embodiments reading the following detailed description of the embodiments with reference to the below-listed drawing figures. It is within the scope of the present disclosure that the above-discussed aspects be provided both individually and in various combinations.
According to common practice, the various features of the drawings discussed below are not necessarily drawn to scale. Dimensions of various features and elements in the drawings may be expanded or reduced to more clearly illustrate the embodiments of the disclosure.
Corresponding parts are designated by corresponding reference numbers throughout the drawings.
The present disclosure generally relates to a system and method of forming reinforced packages for holding products such as food products or other articles. Packages according to the present disclosure can accommodate articles of any shape. The packages can comprise a bag, liner, or wrap material comprising a relatively flexible material attached to a reinforcing construct comprising a relatively rigid material (e.g., paperboard). The bags or liners can generally be made from a paper, plastic or other stock material and can be attached to the reinforcing construct. In one embodiment, the liners comprise polyethylene material or any other suitable heat-sealable material. The reinforcing construct can be of varying widths and can extend about or beyond ends of the liner, and will provide support for the liners upon loading with a product or article or series of articles therein. In some embodiments, the reinforcing construct can be folded with their liners around the food product or article contained in the liner and can provide relative rigidity to the resulting package.
The package 7, the construct 3, the liner 5, and the folded construct 9 are shown and described in one exemplary embodiment of the disclosure, and the package 7 can be formed by one embodiment of the system and method of the present disclosure. Further embodiments of blanks, liners, constructs, and packages that are applicable to the present disclosure and that can be formed by one embodiment of the system and method of the present disclosure are included in the incorporated-by-reference U.S. patent application Ser. No. 14/919,072, filed Oct. 21, 2015. Various other designs and embodiments of the blank, liner, folded construct, and package could also be suitable for formation by one embodiment of the system and method of the present disclosure.
As shown in
According to the illustrated embodiment,
In the illustrated embodiment, the gusset 52 can include three folds 50 in the liner 5 so that two gusset panels 51 are foldably connected to the respective bottom marginal portion 45 and central portion 46 along respective folds 50, and so that the gusset panels 51 are foldably connected to one another along the intermediate fold 50. In one embodiment, the folds 50 can be generally perpendicular to the longitudinal axis L2 and to the length of the blank 3 as shown in
As shown in
As shown in
As shown in
As illustrated in
In one embodiment, a carton feeder 107 is positioned at the upstream end 103 of the system 100 and includes a stack 108 of constructs 3 that are fed to a blank conveyor 109. The blank conveyor 109 moves the constructs 3 in the machine direction M towards the web 101 of bag material. In one embodiment, the carton feeder 107 is a pick and place type carton feeder, as shown in
As shown in
In one embodiment, a construct 3 on the blank conveyor 9 can be engaged by the stop bar 112 and two lugs 113 can engage the upstream edge of the construct 3 to push the construct 3 downstream past the stop bar 112 as shown in
In one embodiment, the attachment region 115 of the system 100 includes an adhesive applicator 116 (
In one embodiment, as shown in
In the illustrated embodiment, the gussets 52 of the folded web 101′ can be formed by the inner forming plate 129 (
In one embodiment, the attached web W′ moves from the web edge forming assembly 125 to a construct folding assembly 131 of the system 100. In one embodiment, the carton forming assembly 131 includes construct folding features (
As shown in
As shown in
The rotary heat sealer assembly 139 could have other components or be otherwise configured. For example, the rotary heat sealer assembly could be similar to the rotary bag sealer assembly disclosed in incorporated-by-reference U.S. Provisional Patent Application No. 62/179,172 and U.S. patent application Ser. No. 15/142,103 and could have a heat seal arm and/or a roller with a square or rectangular cross-sectional shape so that the roller includes four edges or corners around the circumference of the roller that engage the attached web W′, with the heat seal arm in contact with the roller to join the layers of overlapped material. Further, the rotary heat sealer assembly 139 could be omitted or could be otherwise shaped, arranged, and/or configured without departing from the disclosure. For example, the pouch 48 could be left unsealed or could be sealed by another system and/or process.
In one embodiment, the system 100 includes scrap cutting assembly 145 (schematically shown in
As shown in
In one embodiment, the system 100 includes a rotary cutting assembly 151 (schematically shown in
In one embodiment, as shown in
In one embodiment, a conveyor assembly 161 is located downstream of the rotary cutting assembly 151 (
The system 100 for forming the reinforced packages 7 of the present disclosure form the packages in a highly efficient manner by first attaching the web 101 to the blanks 3 to form the attached web W′, and then forming the folded web 101′ from the web 101 including the bottom gusset 52. In one embodiment, the blank 3 is then folded during or after forming the folded web 101′ and bottom gusset 52 to form the folded construct 9. Alternatively, the construct 3 is not folded by the system 100. The attached web W′ including the folded web 101′ and the construct 3 or the folded construct 9 is then further processed to form the sealed features 54 and the pouch 48 of the folded web 101′ and to cut and separate the liner 5 with the construct 3 or the folded construct 9 attached thereto from the remainder of the attached web W′ to form the individual reinforced packages 7. The system 100 of the present disclosure is more efficient than other systems that separately form and shape the liners 5 having the pouches 48 and attach the formed liners to the blanks 3 in that once the blanks 3 are attached to the web 101 to create the attached web W′ of the system 100 of the present disclosure, the blanks move with the web 101 in an aligned manner and twisting or turning of the blanks during processing is prevented by the secure attachment to the web. Furthermore, alignment of the separate blanks 3 and the cut and formed liners 5 is no longer needed as the packages 7 formed by the system 100 are formed from the attached web W′ including the blanks 3 attached to the web 101.
Generally, as described herein, liners can be formed from a paper stock material, although various plastic or other liner materials also can be used, and can be lined or coated with a desired material. The constructs, blanks, and/or reinforcing sleeves described herein can be made from a more rigid material such as a clay-coated natural kraft (“CCNK”). Other materials such various card-stock, paper, plastic or other synthetic or natural materials also can be used to form the components of the packages described herein.
In general, the blanks of the present disclosure may be constructed from paperboard having a caliper so that it is heavier and more rigid than ordinary paper. The blank can also be constructed of other materials, such as cardboard, or any other material having properties suitable for enabling the carton to function at least generally as described above. The blank can be coated with, for example, a clay coating. The clay coating may then be printed over with product, advertising, and other information or images. The blanks may then be coated with a varnish to protect information printed on the blanks. The blanks may also be coated with, for example, a moisture barrier layer, on either or both sides of the blanks. The blanks can also be laminated to or coated with one or more sheet-like materials at selected panels or panel sections.
As an example, a tear line can include: a slit that extends partially into the material along the desired line of weakness, and/or a series of spaced apart slits that extend partially into and/or completely through the material along the desired line of weakness, or various combinations of these features. As a more specific example, one type tear line is in the form of a series of spaced apart slits that extend completely through the material, with adjacent slits being spaced apart slightly so that a nick (e.g., a small somewhat bridging-like piece of the material) is defined between the adjacent slits for typically temporarily connecting the material across the tear line. The nicks are broken during tearing along the tear line. The nicks typically are a relatively small percentage of the tear line, and alternatively the nicks can be omitted from or torn in a tear line such that the tear line is a continuous cut line. That is, it is within the scope of the present disclosure for each of the tear lines to be replaced with a continuous slit, or the like. For example, a cut line can be a continuous slit or could be wider than a slit without departing from the present disclosure.
In accordance with the exemplary embodiments, a fold line can be any substantially linear, although not necessarily straight, form of weakening that facilitates folding there along. More specifically, but not for the purpose of narrowing the scope of the present disclosure, fold lines include: a score line, such as lines formed with a blunt scoring knife, or the like, which creates a crushed or depressed portion in the material along the desired line of weakness; a cut that extends partially into a material along the desired line of weakness, and/or a series of cuts that extend partially into and/or completely through the material along the desired line of weakness; and various combinations of these features. In situations where cutting is used to create a fold line, typically the cutting will not be overly extensive in a manner that might cause a reasonable user to incorrectly consider the fold line to be a tear line.
The above embodiments may be described as having one or more panels adhered together by glue during erection of the carton embodiments. The term “glue” is intended to encompass all manner of adhesives commonly used to secure carton panels in place.
The foregoing description of the disclosure illustrates and describes various embodiments. As various changes could be made in the above construction without departing from the scope of the disclosure, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. Furthermore, the scope of the present disclosure covers various modifications, combinations, alterations, etc., of the above-described embodiments. Additionally, the disclosure shows and describes only selected embodiments, but various other combinations, modifications, and environments are within the scope of the disclosure as expressed herein, commensurate with the above teachings, and/or within the skill or knowledge of the relevant art. Furthermore, certain features and characteristics of each embodiment may be selectively interchanged and applied to other illustrated and non-illustrated embodiments of the disclosure.
This application claims the benefit of U.S. Provisional Patent Application No. 62/179,172, filed on Apr. 29, 2015, and U.S. Provisional Patent Application No. 62/179,480, filed on May 8, 2015.
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