AU719869B2 - A bag and/or related method of manufacture - Google Patents
A bag and/or related method of manufacture Download PDFInfo
- Publication number
- AU719869B2 AU719869B2 AU24810/97A AU2481097A AU719869B2 AU 719869 B2 AU719869 B2 AU 719869B2 AU 24810/97 A AU24810/97 A AU 24810/97A AU 2481097 A AU2481097 A AU 2481097A AU 719869 B2 AU719869 B2 AU 719869B2
- Authority
- AU
- Australia
- Prior art keywords
- bag
- ply
- liquid absorbent
- elongate sheet
- plies
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
AUSTRALIA
Patent Act COMPLETE
SPECIFICATION
(ORIGINAL)
Class Int. Class Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority: Related Art: Names(s) of Applicant(s): AEP INDUSTRIES (NZ) LIMITED Actual Inventor(s): Tihomir Kascelan Address for service is: PHILLIPS ORMONDE
FITZPATRICK
Patent and Trade Mark Attorneys 367 Collins Street Melbourne, Victoria 3000, Australia Complete Specification for the invention entitled: A BAG AND/OR RELATED METHOD OF MANUFACTURE Our Ref: 492956 The following statement is a full description of this invention, including the best method of performing it known to applicant(s): -1- 2210x -2- The present invention relates to a bag and/or related method of manufacture.
Meat products are frequently packaged in a thermoplastics film bag whether of a wicketable form or not. New Zealand Patent Specification No. 235915 of Japan Vilene Limited discloses a package containing meat in which excessive meat juices are absorbed and freshness is retained where the packaging includes a gas impermeable film and the meat is vacuumed packed.
The present invention is directed to a preferably lie flat bag in an unfilled condition (wicketable or not) which is capable of being used with or without vacuum packing and preferably without vacuum packing for the packaging of a meat product such as whole chickens, chicken parts or processed chicken meats and which, in conjunction with an appropriate liquid absorbing system, present an oooo anaesthetic package to the consumer while at the same time keeping as much as possible liquid exudate away from the meat to be consumed.
It is therefore an object of the present invention to provide a bag and/or method of manufacture which will go at least some way to meet the above S: mentioned desiderata or which will at least provide the public with a useful choice.
A first aspect the present invention consists in a bag for packaging meat or meat products (preferably poultry), said bag having i) top and bottom plies to define top and bottom bag panels of a lay flat bag, each having a mouth edge (wicketable or otherwise), a bottom edge and two side edges, ii) a liquid absorbent assembly of substantially a flat form, and iii) a ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies, and wherein each said ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies is connected to one of said top and bottom plies transversely of the bag -3closer to said mouth edge(s) than the bottom edge(s) and at least partially overlies said liquid absorbent assembly, or as in but said ply between said top and bottom plies is at least in part perforate, or as in but wherein said ply between said top and bottom plies is at least in part perforated and is also connected to the ply to which it is connected transversely of the bag adjacent the bottom edge(s).
Preferably said ply between said top and bottom plies is a sash-like strip not co-extensive with either of said top and bottom bag panels.
Preferably each said bag is formed by material advancement transverse to the bag axis (which runs mouth to bottom), ie. advancement is parallel to the aforementioned transverse direction with respect to each said bag.
Preferably said ply between said top and bottom plies is likewise advanced transversely of the bag axis.
o* o:i In still a further aspect the present invention consists in a bag for packaging .meat or meat products (preferably poultry), said bag having top and bottom plies defining top and bottom bag panels of a lay flat o bag having a mouth edge (wicketable or otherwise) a bottom edge and two side •ooa a edges, 20 (ii) a liquid absorbent assembly of substantially a flat form, and (iii) a ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies, wherein said ply between said top and bottom plies is connected to one of said top and bottom plies along at least one edge thereof transversely of the bag axis (mouth to bottom) to form a pocket for constraining said liquid absorbent assembly, and wherein each said bag is formed by material advancement transverse to the bag axis (mouth to bottom), -4and wherein said side and bottom edges (should the bottom edge not be a fold line) are formed by seal cutting subsequent to sealing of a longitu dinal edge region of the material feed of the 3 ply material over a located liquid absorbent assembly (from above or below) to one of said top and bottom plies.
Preferably said bottom edge is fold line defined.
Preferably said side edges are arcuate (convex) adjacent said bottom edge.
In still a further aspect the present invention consists in a method of forming a bag in accordance with the present invention, said method being preformed in a manner substantially as hereinafter described.
In still a further aspect the present invention consists in as a stack (wicketable or otherwise) a plurality of lie flat or substantially lie flat bags in accordance with the present invention.
In preferred forms of the present invention said liquid absorbent assembly comprises a liquid impermeable film and a liquid absorbent matrix (preferably nonwoven of cellulosic or other appropriate fibres) which confines at least an additional "."absorbent component.
Preferably said additional absorbent component comprises granules of an •appropriate absorbent material such as silica gel.
In still a further aspect the present invention consists in a method of forming 20 a lie flat bag in accordance with the present invention which comprises the steps of providing bag forming plastic material in an elongate sheet, sequentially at predetermined intervals placing liquid absorbent assemblies on said sheet, introducing a second elongate sheet with said first elongate sheet to overlie said liquid absorbent assemblies, passing said elongate sheet and said second elongate sheet past one or more sealing heads to seal at least one along a longitudinal edge of said second elongate sheet to said elongate sheet, folding said elongate sheet along a longitudinal fold line to bring the portions of the elongate sheet on either side of the fold line together, optionally contour sealing the elongate sheet and/or second elongate sheet at or towards the fold line, and seal cutting transversely to the elongate sheet and second elongate sheet the elongate sheet and second elongate sheet in segments to provide said bag.
To those skilled in the art to which the invention relates, many changes in construction and widely differing embodiments and applications of the invention will suggest themselves without departing from the scope of the invention as defined in the appended claims. The disclosures and the descriptions herein are purely illustrative and are not intended to be in any sense limiting.
The invention consists in the foregoing and also envisages constructions of which the following gives examples.
One preferred form of the present invention will now be described with o reference to the accompanying drawings in which; Figure 1 is a plan view viewed in direction AA of one bag of a preferred form of the present invention, oo.: Figure 2 is a cross-sectional view through section BB of the bag of Figure 1, ooo* Figure 3 is a sectional view at CC of a bag of Figure 1, Figure 4 is an alternative configuration of a preferred form of the bag of the •present invention viewed in direction AA, :2 F: 20 Figure 5 is a view through section BB of the bag of Figure 4, Figure 6 is a view at section CC of the bag of Figure 4, Figure 7 shows detail of the manufacturing sequence of a bag wherein the liquid absorbent assembly is positioned between the top and bottom plies, Figure 8 shows detail of the manufacturing sequence of a bag wherein the liquid absorbent assembly is located between top and bottom plies and retained by a perforated ply, RFigure 9 shows detail of the manufacturing sequence of a bag wherein the -6liquid absorbent assembly is sealed between the perforated ply and between the top and/or bottom plies, Figure 10 shows detail of the manufacturing sequence of a bag wherein the liquid absorbent assembly is positioned between the top and bottom plies and retained by the intermediate ply, wherein the liquid absorbent assembly is fed from a stack, Figure 11 shows detail of the manufacturing sequence of a bag wherein the liquid absorbent assembly is located between top and bottom plies and retained by a perforated ply, wherein the liquid absorbent assembly is fed from a stack, and Figure 12 shows detail of the manufacturing sequence of a bag wherein the liquid absorbent assembly is sealed between the perforated ply and top and/or *see bottom plies, wherein the liquid absorbent assembly is fed from a stack.
The present invention relates to bags 1 which are preferably of a lie flat nature when there is no contents within the boundary of the bag. With reference to Figures 1-3, the bag preferably has at or adjacent its mouth edge 2 a region which allows the bag or sequence of bags to be wicketed. Wickets are able to be inserted S...through apertures in the region at the mouth edge 2 to receive a plurality of bags and o to maintain these in a stacked configuration. The preferable wicketing capability of the bag of the present invention allows for securement of the bag during filling with for example meat product such as poultry. It is however not essential that the bag of the present invention be wicketable and this is illustrated as an option in Figures 4 6.
The bag is most preferably capable of being used to package meat products such as whole chickens, chicken parts or processed chicken meats, but it is envisaged that the bag can be used for other meats.
The meat product may be packaged in the bag of the present invention by vacuum packaging however, preferably the meat will not be vacuum packed within the bag.
The top and bottom plies 3, 4 define top and bottom panels of the bag 1. The bag further has a mouth edge 2, a bottom edge 5 and side edges 6.
Between the top and bottom plies 3, 4 is located a liquid absorbent assembly 7. The liquid absorbent assembly 7 is constrained to either the top or bottom by a retainer ply between the top and bottom plies.
The retainer ply 8 is located between the top and bottom plies and may be engaged to one of the top or bottom plies in several ways. In one preferred form the ply 8 is engaged along one edge thereof to one of the top or bottom plies in a direction transverse to the direction of the side edges 6. Such engagement is preferably across the entire width of the bag and hence also seals along the two side o o edges 6 to form a pocket as shown in Figures 4 6 into which the liquid absorbent assembly 7 is or can be inserted. Most preferably the retainer ply 8 is engaged by a heat seal 9 to one of the two plies transverse to the edges 6. Alternatively such 15 engagement may be by a suitable adhesive.
oor In an alternative form of the present invention the retainer ply 8 between the top and bottom plies is engaged to either the top or bottom ply along two transverse lines of adhesion or sealing as shown in Figures 1 3. In this preferred form of the present invention the liquid absorbent assembly 7 is enclosed by the retainer ply 8 20 and the top or bottom plies. In this preferred form of the present invention the retainer ply 8 is preferably perforated or micro perforated or made of a liquid permeable material.
As shown in Figures 4 6 of the alternative configuration of a bag wherein the absorbent assembly 7 is not entirely enclosed by the retainer ply 8 the heat seal 9 is preferably along that edge of the retainer ply 8 closest to the mouth edge 2, i.e. the retainer ply 8 has its open end/openable end towards the bottom edge RThe liquid absorbent assembly may be of such a shape as to either extend -8beyond the open edge of the retainer ply 8 or such that it does not extend beyond the edge as shown in Figures 4 6. The retainer ply 8 of the preferred form of the bag of Figures 4 6 may or may not be perforated, micro perf9rated or made of a liquid permeable material.
The top and 5ottom ply may in one form of the present invention consist of the same ply of material folded along the bottom edge 5 to lie over each other and sealed along theedges 6. Alternatively the bag may be made up of top and bottom plies brought together and sealed along the side edges 6 and bottom edge preferably by seal cutting. Such heat seal cutting involves the application of a hot tool which simultaneously seals along the edge and trims or cuts the edge or edges of the bag.
oooe oe-, The liquid absorbent assembly 7 provides a means of absorbing excess fluids S"or liquid juices which may be present in the bag having come from the meat contained in the bag. The liquid absorbent assembly 7 positioned within the bag is able to absorb such liquid juices and hence aid in keeping these away from the meat contents.
S...The bag 1 (in a lie flat state) may be substantially rectangular or square in oo shape as shown in Figures 4 6 or may have arcuate regions at or towards the bottom edge 5 as shown in Figures 1, 2, 3. A person skilled in the art will however S• 20 realise that many alternative configurations and shapes of the bag will allow the present invention to be performed.
Preferably the liquid absorbent assembly is of a non-woven matrix of cellulosic or other appropriate fibres, which confine at least an additional absorbent component. Preferably such an absorbent component is a silica gel however a person skilled in the art will realise that many alternative configurations may exist.
Preferably the bag is made from a polyolefin (polypropylene or Apolyethylene). Preferably it is a low density polyethylene but it could be made from -9other appropriate food grade materials. The retainer ply 8 which supports the liquid absorbent assembly 7 has a film thickness when of polypropylene of from about 25 microns whereas the alternative polyethylene bag is inthe range of about 35 microns and preferably 40 microns. The polyethylene is preferably not a gas impermeable film but is substantially liquid impermeable.
Once a meat product has been inserted into the bag by a user of the bag, the bag may be sealed by appropriate sealing means such as twisty ties, heat sealing, knotting or the like.
A person skilled in the art will realise that there are alternative forms which are known for sealing the bags of the present invention.
~Figure 7 shows details of the manufacturing sequence of a bag wherein the liquid absorbent assembly is located between but not fully enclosed within the retainer ply and the top or bottom plies. In this manufacturing sequence it can be rr seen that the retainer ply is preferably a non perforated film.
0. 0 15 A ply of material is drawn continuously from a primary reel 20 and is 409.
manipulated appropriately to be positioned so as to run past a feeding station which :feeds the liquid absorbent assemblies 7 from a reel 30. Preferably the liquid absorbent assemblies 7 are located on the reel 30 in a continuous form and are separated therefrom at a servo driven dispensing unit 31. The servo driven dispensing unit 31 operates appropriately to feed the liquid absorbent assemblies 7 from the reel 31 at appropriate intervals onto the ply of material drawn from the primary reel As the ply drawn from the primary reel 20 and the liquid absorbent assembly 7 are positioned appropriately relative thereto, a web of material from a second reel 23 is drawn onto the material from the primary reel 20 and the liquid absorbent assemblies. This material from the second reel defines the retainer ply 8.
-,cjRA The retainer ply 8, liquid absorbent assemblies 7 and the ply from the primary reel 20 in advance as an assembly of plies past a longitudinal sealer 24 which defines the engagement between the top and/or bottom ply and the retainer ply 8.
Preferably the longitudinal sealer 24 seals the retainer ply 8 to the top or bottom plies by means of heat sealing. It is however envisaged that alternative sealing means may be utilised such as the use of adhesives or the like.
The assembly of plies and the liquid absorbent assembly 7 is next advanced towards and past a former which folds the ply from the primary reel 20 along a longitudinal fold line to bring the two regions on either side of the fold line together.
The fold line defines the bottom of the bag As the material advances on from the former the bag of the present invention is defined by a cutting station 26. Preferably the cutting station 26 is a 0 sealing bar which seals each of the bags along the edge 6 and simultaneously separates each of the bags from the material travelling from the former.
Optionally a contour sealer 27 may be provided prior to the cutting station 26 to provide contour to the bottom edge or end of the bag. In addition the apertures for 0@eS ooo• the wicketable version of the bag may also be formed at this stage.
"-Figure 8 illustrates an alternative manufacturing sequence wherein a perforated retaining ply is utilised and is dispensed from the second reel 23. This is 20 the only difference between the manufacturing sequence illustrated in Figure 7.
Figure 8 illustrates the sequence wherein the reel of material which provides the retainer ply between the top and bottom plies) is a micro-perforated material.
Figure 9 illustrates yet another alternative manufacturing sequence to produce the bag substantially shown in Figures 1 3 wherein the liquid absorbent assembly 7 is fully enclosed between the retainer ply 8 and the top or bottom ply. It can be seen that there is provided in this manufacturing sequence duel longitudinal 4 sealers 24 to provide the seals top and bottom transverse of the side edges for each -11of the bags.
The contour sealer 27 as shown in Figures 7, 8 and 9 is optional and if it is desired for a substantially rectangular bag (in a lie flat state) to be produced then this contour sealer is not required.
The manufacturing sequences illustrated in Figures 10, 11 and 12 are substantially similar to the sequences shown in Figures 7, 8 and 9 respectively, however instead of the liquid absorbent material being fed from a reel 30 as shown in Figures 7, 8 and 9 there is provided a stack of liquid absorbent assemblies 7 from which each of the liquid absorbent assemblies is fed onto the material from the primary reel It will be appreciated by persons skilled in the art that alternative configurations of manufacturing sequences will allow the bag of the present invention to be manufactured.
.1 o o go• *o *go•
Claims (7)
1. A bag for packaging meat or meat products (preferably poultry), said bag having i) top and bottom plies to define top and bottom bag panels of a lay flat bag, each having a mouth edge (wicketable or otherwise), a bottom edge and two side edges, ii) a liquid absorbent assembly of substantially a flat form, and iii) a ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies, and wherein each said ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies is connected to one of said top and bottom plies transversely of the bag closer to said mouth edge(s) than the bottom edge(s) and at least partially overlies o.: said liquid absorbent assembly, or as in but said ply between said top and bottom plies is at least in .part perforate, or as in but wherein said ply between said top and bottom plies is at oooo o least in part perforated and is also connected to the ply to which it is connected 'o transversely of the bag adjacent the bottom edge(s). 20 2. A bag as claimed in claim wherein said ply between said top and bottom plies is a sash-like strip not co-extensive with either of said top and bottom bag panels.
3. A bag as claimed in claims 1 or 2 wherein each said bag is formed by material advancement transverse to the bag axis (which runs mouth to bottom), ie. advancement is parallel to the aforementioned transverse direction with respect to each said bag.
4. A bag as claimed in any one of claims 1 to 3 wherein said ply between saidRA 4. A bag as claimed in any one of claims I to 3 wherein said ply between said -13- top and bottom plies is likewise advanced transversely of the bag axis. A bag for packaging meat or meat products (preferably poultry), said bag having top and bottom plies defining top and bottom bag panels of a lay flat bag having a mouthdge-(wicketable or otherwise) a bottom edge and two side edges, (ii) a liquid absorbent assembly of substantially a flat form, and (iii) a ply between said top and bottom plies constraining said liquid absorbent assembly to one or other of said top and bottom plies, wherein said ply between said top and bottom plies is connected to one of said top and bottom plies along at least one edge thereof transversely of the bag axis (mouth to bottom) to form a pocket for constraining said liquid absorbent assembly, and wherein each said bag is formed by material advancement transverse to the bag axis (mouth to bottom), 15 and wherein said side and bottom edges (should the bottom edge not be a :fold line) are formed by seal cutting subsequent to sealing of a longitudinal edge region of the material feed of the 3 ply material over a located liquid absorbent assembly (from above or below) to one of said top and bottom plies. off.
6. A bag as claimed in claim 5 wherein said bottom edge is fold line defined. 20 7. A bag as claimed in claim 6 wherein said side edges are arcuate (convex) •adjacent said bottom edge. A method of forming a bag in accordance with the present invention, said method being preformed in a manner substantially as herein, with or without reference to any one of the accompanying drawings.
9. As a stack (wicketable or otherwise) a plurality of lie flat or substantially lie flat bags as claimed in any one of claims 1 to 4. A bag as claimed in claim 1 wherein said liquid absorbent assembly -14- comprises a liquid impermeable film and a liquid absorbent matrix (preferably non- woven of cellulosic or other appropriate fibres) which confines at least an additional absorbent component.
11. A bag as claimed in claim 1 wherein said additional absorbent component comprises granules of an appropriate absorbent material such as silica gel.
12. A method of forming a lie flat bag in accordance with the present invention which comprises the steps of providing bag forming plastic material in an elongate sheet, sequentially at predetermined intervals placing liquid absorbent assemblies on said sheet, introducing a second elongate sheet with said first elongate sheet to overlie said liquid absorbent assemblies, passing said elongate sheet and said second elongate sheet past one or more sealing heads to seal at least one along a longitudinal edge of said second elongate sheet to said elongate sheet, folding said elongate sheet along a longitudinal fold line to bring the portions of the elongate sheet on either side of the fold line together, optionally contour sealing the elongate sheet and/or second elongate sheet at or towards the fold line, and seal cutting transversely to the elongate sheet and second elongate sheet the elongate sheet and second elongate sheet in segments to provide said bag. 2 Dated: 16 February 2000 AEP INDUSTRIES (NZ) LIMITED a =.25 Patent Attorneys for the Applicant
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ28684096A NZ286840A (en) | 1996-06-18 | 1996-06-18 | Bag for packaging meat includes liquid absorbent assembly constrained to one of top and bottom plies |
| NZ286840 | 1996-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2481097A AU2481097A (en) | 1998-01-08 |
| AU719869B2 true AU719869B2 (en) | 2000-05-18 |
Family
ID=19925794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU24810/97A Ceased AU719869B2 (en) | 1996-06-18 | 1997-06-11 | A bag and/or related method of manufacture |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU719869B2 (en) |
| NZ (1) | NZ286840A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655504B (en) * | 2022-04-21 | 2023-07-04 | 苏州市朗电机器人有限公司 | Film covering device based on mobile phone full-film covering and application method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410578A (en) * | 1981-04-29 | 1983-10-18 | Miller Alan H | Receptacle for moisture exuding food products |
| EP0321361A1 (en) * | 1987-12-17 | 1989-06-21 | Paul Predault | Packing, especially vacuum-packing, for products releasing humidity |
| NZ235915A (en) * | 1989-11-02 | 1994-01-26 | Japan Vilene Co Ltd | Vacuum-packaged meat; liquid-impermeable sheet of liquid absorber |
-
1996
- 1996-06-18 NZ NZ28684096A patent/NZ286840A/en unknown
-
1997
- 1997-06-11 AU AU24810/97A patent/AU719869B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410578A (en) * | 1981-04-29 | 1983-10-18 | Miller Alan H | Receptacle for moisture exuding food products |
| EP0321361A1 (en) * | 1987-12-17 | 1989-06-21 | Paul Predault | Packing, especially vacuum-packing, for products releasing humidity |
| NZ235915A (en) * | 1989-11-02 | 1994-01-26 | Japan Vilene Co Ltd | Vacuum-packaged meat; liquid-impermeable sheet of liquid absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| NZ286840A (en) | 1998-09-24 |
| AU2481097A (en) | 1998-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |