Abstract:
A container capable of being erected from multiple blanks in a machine and lidded post filling in that machine line. By a simple adaptation two different forms of filled container are envisaged each preferably adapted for transporting frozen meat or like frozen products.

Description:
TECHNICAL FIELD  
       [0001]     The present invention relates to a machine line adapted for erecting at least in part two types of container for lidding subsequently or in the line itself and to containers thus made, and to related components, methods and assemblies.  
       BACKGROUND ART  
       [0002]     In the transportation of produce such as meat, fish and the like, higher quality produce is frequently packed without any pre-freezing and with the intention that it reach a consumer without ever having been frozen. This is particularly the case where higher grades of animal meats can be packed and transported in a controlled atmosphere.  
         [0003]     With frozen materials however, usually of a lower grade meat or for a less demanding end consumer (e.g. hamburger meats), some advantage can be derived from the integrity that a mass of frozen product within a container can provide to the overall pack insofar as strength is concerned. Indeed some forms of packaging containers that simply adhere to the frozen content have found favour.  
         [0004]     The present invention however recognises that significant cost savings are available to an end user (i.e. the packing house) where a machine line can be provided adapted to receive similar componentry and to be operated in at least two modes, one mode for preparing a container to be filled with meat or the like produce that is to be chilled only and, in another mode, for preparing a container to be loaded with produce to be frozen.  
         [0005]     In the second instance one or more of the components can be provided of a cheaper material or of a cheaper form or both.  
         [0006]     It is therefore an object of the present invention to provide a machine line and products erectable by such a machine line which will at least provide the public with a useful choice. It is also or instead the intention of the present invention to offer a container suitable for chilled meat or like produce where a perforate or like lidding feature is provided preferably such that a lid of similar form as that which might be used for a frozen produce can be utilised save for that feature.  
       SUMMARY OF THE INVENTION  
       [0007]     In a first aspect the present invention is a container erected or erectable from blank components preferably to define a container adapted for transporting chilled meat or like unfrozen products, said container being erected or erectable from  
         [0008]     a first blank to define a side wall type bliss container body component to define a rectangular base panel and end wall panels dependent therefrom, the base and each end wall panel having laterally (lateral with respect to the elongate axis of the base) extending flaps to allow the first blank&#39;s use as a side wall type bliss container body component,  
         [0009]     a second blank to define a full height side wall panel and a partial yet full height end wall attachment and/or reinforcement panel at each end of the side wall panel,  
         [0010]     a third blank similar to the second blank, and  
         [0011]     a fourth blank to define a lidding panel with attachment flaps to extend and adhesively be affixed to the top of the end wall panels and the side wall panels, said fourth blank having the lidding panel at least in part with perforate and/or frangible zones to encourage tear opening thereof.  
         [0012]     Preferably the blank components are all of, at least in part, a paperboard or like laminate e.g. single or multiple cushion corrugated board.  
         [0013]     Preferably the first, second and third blanks are erected and/or former held for filling prior to fixing of the fourth blank thereto.  
         [0014]     Preferably the second and third blanks are adapted to bear vertically (in a flute run direction) anticipated stack loads of the meat or like filled erect containers.  
         [0015]     Preferably the first blank, second blank, third blank, and/or fourth blank is substantially as hereinafter described with reference to any one of  FIGS. 1A  to  1 DDD.  
         [0016]     Preferably the container erects to a form substantially as hereinafter described with reference to  FIGS. 1A through 3 .  
         [0017]     In a further aspect the present invention consists in a machine line for erecting (at least in part) two types of container, the machine line being adapted in one mode preferably to define a container adapted for transporting chilled meat or like unfrozen products, said container being erected or erectable from at least  
         [0018]     a first blank to define a side wall type bliss container body component to define a rectangular base panel and end wall panels dependent therefrom, the base and each end wall panel having laterally (lateral with respect to the elongate axis of the base) extending flaps to allow the first blank&#39;s use as a side wall bliss container body component,  
         [0019]     a second blank to define a full height side wall panel and a partial yet full height end wall attachment and/or reinforcement panel at each end of the side wall panel,  
         [0020]     a third blank similar to the second blank, and  
         [0021]     the machine being adapted in a second mode preferably to define a container adapted for transporting frozen meat or like frozen products, said container being erected or erectable from at least  
         [0022]     a first blank to define a side wall type bliss container body component to define a rectangular base panel and end wall panels dependent therefrom, the base and each end wall panel having laterally (lateral with respect to the elongate axis of the base) extending flaps to allow the first blank&#39;s use as a side wall bliss container body component,  
         [0023]     a second blank to define a full height side wall panel and a partial yet full height end wall attachment and/or reinforcement panel at each end of the side wall panel, and  
         [0024]     a third blank similar to the second blank,  
         [0025]     and wherein, in each of the modes, the container is adapted to be closed (once filled) by a fourth blank to define a lidding panel with attachment flaps to extend and adhesively be affixed to the top of the end wall panels and the side wall panels,  
         [0026]     and wherein, in the first mode, the construction of the second and third blanks is more substantial than in the second mode with respect to 
        1) the extent of the end wall attachment and/or reinforcement panel at each end of the side wall panel,     2) the material from which the second and third blanks are formed, or     3) both (1) and (2).        
 
         [0030]     Preferably the machine line is in or includes a fill line, i.e. the line first erects (at least in part) a carcase (e.g. of first, second or third blanks), fills the carcase, and closes it with a fourth blank.  
         [0031]     Preferably in each mode the first blank is identical.  
         [0032]     Preferably the modes of erection involves the use of hot melt adhesive.  
         [0033]     Preferably each container is adapted to be filled with its intended content before the machine line or some separate apparatus attaches any part of the fourth blank thereto.  
         [0034]     Preferably the fourth blank is affixed by use of not melt adhesive.  
         [0035]     Preferably in said first mode said container is a container as previously defined when the fourth blank has been fixed thereto.  
         [0036]     Preferably the container erectable in the second mode is a similar container to that previously described when the fourth blank is fitted thereto although  
         [0037]     (A) preferably without the lidding panel having at least in part perforate and/or frangible zones to encourage tear opening thereof; and  
         [0038]     (B) preferably without both the structural strength of the material from which the second and third blanks of the first mode are formed and without the end wall attachment and/or reinforcement panels extending inwardly as far as in the first mode.  
         [0039]     Preferably such panels substantially or more or less meet at the central axis of the container in a first mode container whereas, in the second mode container, they are merely relatively small intrusions towards the centre (i.e. they do not confer any substantial reinforcement near that provided in the first mode).  
         [0040]     In still a further aspect the present invention consists in a use of a machine [such as that used by this company for erection of its “PLB” trays (available under license from us from Rob Jennings Developments Limited, Tauranga, New Zealand)] in a machine line as previously set forth.  
         [0041]     Preferably the container of the second mode is substantially of a form as hereinafter described with reference to  FIGS. 2A  to  2 D.  
         [0042]     In another aspect the present invention consists in, in combination, the blanks of a mode 1 and/or a mode 2 container as herein defined.  
         [0043]     In still a further aspect the present invention consists in, in combination, a mode 1 and/or a mode 2 type of container set of blanks and a machine capable of erecting at least the carcase of one or both modes.  
         [0044]     Preferably said machine is of a kind as previously referred to.  
         [0045]     In still a further aspect the present invention consists in a fill line which includes in the fill line a machine adapted first to erect a carcase to be filled of a mode 1 and/or mode 2 type container and, post filling, to allow the fitting of the lidding feature thereto. The fitting of the lid can be manually or with the assistance of machinery.  
         [0046]     In still a further aspect the present invention consists in, in any machine line, the capability of erecting to the extent required for filling with produce any container or container sub-assembly of the two types herein described with reference to any one or more of the accompanying drawings and thereafter lidding each such container or container sub-assembly when so filled.  
         [0047]     Reference herein to “filling” preferably includes partial filling but preferably for best conferring of strength, at least in the frozen meat or the like produce packs, there is a substantial filling.  
         [0048]     As used herein the term “and/or” means “and” or “or”, or both as the circumstance allows.  
         [0049]     As used herein the term “(s)” means the plural and/or singular forms of that noun.  
         [0050]     In still another aspect the present invention consists in a pack produced from blanks in accordance with the present invention, in line using a machine line of the present invention, using a machine as previously referred to or using, in any machine line, the capability referred hitherto as the invention. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0051]     A preferred form of the present invention will now be described with reference to the accompanying drawings in which;  
         [0052]      FIG. 1A  is a plan view of a first blank to define a side wall type bliss container body component to define a rectangular base panel and end wall panels dependent therefrom, the base and each end wall panel having laterally extending flaps to allow its use as such a side wall bliss container body component,  
         [0053]      FIG. 1B  is a second blank to define a full height side wall panel and a partial yet full height end wall attachment and/or reinforcement panel at each end of the side wall panel,  
         [0054]      FIG. 1C  is a similar component to that of  FIG. 1B  but to define the other side wall of the erected container,  
         [0055]      FIG. 1D  is one optional form of a fourth component of a container in accordance with the present invention having one mode of perforate removal zone extending from an attachment flange into its lidding panel,  
         [0056]      FIG. 1D D is an alternative arrangement of a fourth component as in  FIG. 1D ,  
         [0057]      FIG. 1D DD is still a further embodiment of a perforate zone, in each instance in FIGS.  1 D through  1 DDD the perforate zone having a commencement region on a non glued or loosely glue attached region of a lid flap or flange attached to the top of a side wall (although it could be to an end wall),  
         [0058]      FIG. 2A  shows a component identical in form to that of  FIG. 1A  for use in a container formed in the second mode of construction,  
         [0059]      FIG. 2B  is a second blank of the second component having partial yet full height end wall reinforcement panels at each end, in fact these, in this form, preferably assuming a low inward intrusion flap form which confers little in the way of stacking strength (despite preferably a vertical flute run direction) in an erected container,  
         [0060]      FIG. 2C  is a third blank being identical to that of  FIG. 2B ,  
         [0061]      FIG. 2D  is a lid blank component (fourth blank) preferably without the perforate features of FIGS.  1 D through  1 DDD suitable for closing a container to hold frozen contents,  
         [0062]      FIG. 3  is an isometric view of an erected container of either of the two modes (save for a non showing of the perforate region preferred for a container of the first mode),  
         [0063]      FIG. 4  is an isometric view of a partially erected lidded container formed from components  1 A through  1 C,  
         [0064]      FIG. 5  is a similar view to that of  FIG. 4  but reliant upon components of  FIGS. 2A through 2C ,  
         [0065]      FIG. 6  is a flow diagram of usage of components of the present invention, and  
         [0066]      FIG. 7  is a flow diagram showing machine functions relative to component supply, erection, and usage. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0067]     In the preferred form of the present invention the intention is to reduce the cost by both a common machine usage and the reduction in cost of the second mode variant container by reliance upon, for at least the component shown in  FIGS. 2B and 2C , a material of lesser strength and cost and having a lesser paper or other material requirement. In some forms of the present invention lesser materials can be utilised for each of the components of  FIGS. 2A and 2D  or at least one of them.  
         [0068]     Whilst the form of the components of  FIGS. 1A and 2A  are identical they preferably use the same material but need not necessarily do so.  
         [0069]     In the preferred form of the present invention as depicted in  FIG. 1  the first blank defines a rectangular base  1  (of course once erected and lidded it does not matter which way up a container is), end wall panels  2  and flaps  3  and  4  for each of the panels  1  and  2  respectively.  
         [0070]     A suitable material for a construction as shown in  FIG. 1A  is a corrugated paperboard such as “E” flute (e.g. 414E).  
         [0071]      FIGS. 1B and 1C  shows the second and third blank components respectively with side wall panels  5  and end wall attachment and/or reinforcement flaps  6 .  
         [0072]     Preferably these flaps  6  are hot melt tacked or otherwise affixed to the inner face of a panel  2  but this is not mandatory if there is sufficient overall strength in the attachment of the components reliant upon other flanges. Normally however for strength, particularly with chilled meat, there is attachment of panels  6  to an end panel  2 .  
         [0073]     The lid as depicted includes a lid defining region  7  that generally conforms in shape to the base  1  but which has hinged therefrom flaps or flanges  8  each to attach to the outside surface of a panel  2  or  5  respectively.  
         [0074]     A feature of the lidding forms of  1 D through  1 DDD, is in each instance, lines of perforation  9  to provide a tear out region. Preferably such tearing can proceed from a perforate or cut out zone  10  that extends down into one of the flanges  8  or right through a flange  8  as in the case shown by the region  11  in  FIG. 1D DD.  
         [0075]     In the preferred form of the present invention the material of the first blank is preferably an “E” flute corrugated board such as 414E. Preferably the second and third blank components are of “powerply”, i.e. 711717SWC. In the case of the lids of drawings FIGS.  1 D through  1 DD preferably the material is a low cost corrugated board such as 212WB.  
         [0076]     As can be seen from  FIGS. 2A through 2D  similar components are utilised but these can be of lower overall form and thus cost or be of a different material. The component of  FIGS. 2B and 2C  preferably has end wall attachment flanges  6 B which equate to panels  6  of Figures B and C respectively. These flanges however do require hot gluing or other adhesive fixing to the inside of a panel  2 B with the overall strength of an erected container reliant upon strong hot glue or other adhesive fixing of flanges  3 B,  4 B and  8 B as shown in the ensuing drawings.  
         [0077]     The second mode container of  FIGS. 2A through 2D ,  FIG. 3  and  FIG. 5  preferably has component  2 A to a similar form (even the same material) as for the first mode container but it could be of a reduced material quality if costs do need to be further pared. The components of  FIGS. 2B and 2C  however are of a reduced quality over those used for components  1 B and  1 C. In this case a material such as a single cushion corrugated board (e.g. 414SC) can be utilised. As far as the lid form of  FIG. 2D  is concerned preferably a material similar to that of components  1 D to  1 DDD are utilised (e.g. 212WB).  
         [0078]     Whilst it is preferable that a paperboard base product is used as the material to be die cut for making the blanks, persons skilled in the art will appreciate how, if desired, any such materials can be lined with materials that confer some additional property. For example, a vacuum metallised polymeric film or other foil or film can be utilised to confer greater heat insulation and waterproofing. Indeed certain lining coatings interiorly and/or exteriorly can be utilised if desired for greater water resistance.  
         [0079]     A feature of the side wall bliss forms of each of the two modes of the present invention is the largely leaving clear for printing purposes of the end wall panels. Indeed, in the form particularly of  FIGS. 1A  to  1 DDD, the end flaps can, if desired, be inserted internally of the end wall attachment and/or reinforcement flaps although this is less desired as it means some compromise in the assembly of the carcase of the overall lidded container.  
         [0080]      FIG. 6  shows as a flow diagram case erecting, case packing, case lidding and access to product with the option of re-closure using a preferred embodiment of the present invention where the packing is chilled meat.  
         [0081]      FIG. 7  shows a flow diagram which operates to produce the side bliss form base, fill it, and lid it as the erected side bliss base moves in the arrowed direction from the erector.  
         [0082]     Shown by appropriate schematic forms is supply apparatus  12  to supply the first blank and supply apparatus  13  and  13 A to supply the second and third blanks respectively such that the three blanks can be erected in the side bliss erector  14  which can be any suitable adaption of a bliss former.  
         [0083]     Thereafter the erected base is case packed at  15  prior to presentation to a case lidding machine  16  which having received a fourth blank from the supply apparatus  17  lids the filled base to provide the resultant lidded case  18 .  
         [0084]     Persons skilled in the art will appreciate how by taking costs out of a frozen pack, whilst relying on a common line to that suitable for a non frozen produce fill line, can make significant end user savings possible.  
         [0085]     Whilst it is envisaged that the total blank to container erection occurs in or adjacent a fill line, persons skilled in the art will appreciate how other variants can be employed that lead to partial erection off site although this is far from desirable and detracts from some of the benefits of the present invention confers.