Packaging and method of manufacturing same

• US 10,399,734 B2
• Filed: 09/16/2016
• Issued: 09/03/2019
• Est. Priority Date: 09/18/2015
• Status: Active Grant

• Current Assignee: Visy R & D Pty Ltd.
• Original Assignee: Visy R & D Pty Ltd.
• Inventors: Dalgleish, Adrian Michael
• Primary Examiner(s): Demeree, Christopher R
• Application Number:
  US15/268,321
• Publication Number:
  US 20170081072A1
• Time in Patent Office: 1,082 Days
• Field of Search: 229165, 229186, 22910311, 22911727, 2291231, 229 584, 2205922, 2065243
• CPC Class Codes: B31B 2100/0024 having all side walls attached to the bottom
• CPC Class Codes: B31B 2120/10 provided with covers, e.g. lids
• CPC Class Codes: B31B 2120/40 lined or internally reinforced
• CPC Class Codes: B65D 5/244 and the gussets folds connected to the outside of the container body B65D5/247, B65D5/248 take precedence
• CPC Class Codes: B65D 5/247 and being maintained in erected condition by integral mechanical locking means formed on, or coacting with, the gusset folds, e.g. locking tabs, tongue and slit B65D5/248 takes precedence
• CPC Class Codes: B65D 5/563 Laminated linings; Coatings
• CPC Class Codes: B65D 5/64 Lids
• CPC Class Codes: B65D 5/68 Telescope flanged lids

Abstract

A packaging for foodstuff, including a base blank adapted to be erected into a carton for containing the foodstuff therein, the base blank including a liner paper that forms an internal surface of the carton and which has a release coating applied thereto; a lid blank adapted to form a lid that is securable to the carton so as to enclose the foodstuff within the carton, the lid blank including a liner paper that forms an internal surface of the lid which has a release coating applied thereto such that at least a part of the lid blank remains uncoated to permit bonding of the lid to an uncoated surface of the carton, wherein, the release coating is contactable with the food stuff and capable of providing clean release therefrom.

Claims

1. A packaging for foodstuff, including:

(a) a base blank adapted to be erected into a carton for containing the foodstuff therein, the base blank including a liner paper that forms an internal surface of the carton and which has a release coating applied thereto;

(b) a lid blank adapted to form a lid that is securable to the carton so as to enclose the foodstuff within the carton, the lid blank including;

(i) a top panel having foldable flaps around an outer periphery; and

(ii) a liner paper that forms an internal surface of the lid which has a release coating selectively applied thereto such that at least a part of the internal surface of the lid blank remains uncoated, wherein the uncoated part of the internal surface of the lid blank is configured to bond to an uncoated surface of the carton,

wherein, the release coating is contactable with the food stuff and capable of providing clean release therefrom;

wherein the release coating is selective'"'"' applied to the liner paper of the lid blank using a pattern printing process; and

wherein at least a portion of the foldable flaps remain uncoated for bonding to an outer surface of the carton when erected.

2. The packaging according to claim 1, wherein the release coating includes:

a pre-coat; and

a top coat which substantially provides the release properties.

3. The packaging according to claim 1, wherein the release coating is selectively applied to the liner paper of the base blank using the pattern printing process.

4. The packaging according to claim 1, wherein the pattern printing process is flexographic or rotogravure printing.

5. The packaging according to claim 1, wherein the printing process controls the application weight of the base coat and the top coat.

6. The packaging according to claim 5, wherein multiple applications of the base coat are applied.

7. The packaging according to claim 1, wherein the release coating is applied using the pattern printing process and wherein:

the base coat provides a uniform surface to maximise the hold of the top coat; and

the application weight of the top coat is reduced or minimized.

8. The packaging according to claim 1, wherein the release coating is dyed blue to assist in visual inspection of the foodstuff and delineation between coated and uncoated areas.

9. The packaging according to claim 1, wherein the release coating is one of:

an aqueous dispersion; and

solvent borne.

10. The packaging according to claim 1, wherein the release coating covers the top panel and a part of the foldable flaps.

11. The packaging according to claim 1, wherein the base blank includes gusseted corners to assist in making the erected carton leakproof.

12. The packaging according to claim 1, wherein the base blank includes:

a bottom panel;

a first pair of side panels disposed about creases along opposing short edges of the bottom panel;

a second pair of side panels disposed about creases along opposing long edges of the bottom panel; and

folding gusset members disposed in respective corner rations of the base blank, the gusset members configured to fold out in overlapping relation to the first pair of side panels.

13. The packaging according to claim 12, wherein select ones of the gusset members include extending tabs which in use extend across an upper edge of the respective first pair of side panels and engage with opposing tabs to form a continuous flat surface across each respective side panel.

14. The packaging according to claim 1, wherein upper edges of the respective side panels have exposed corrugated flutes when the carton is erected.

15. The packaging according to claim 1, wherein upper edges of the respective side panels include a fold over flap when the carton is erected.

16. The packaging according to claim 1, wherein the base blank and lid blank are manufactured from corrugated paperboard.

17. The packaging according to claim 1, wherein the packaging is poly bag linerless.

18. The packaging according to claim 1, wherein the carton and lid are substantially rectangular.

19. The packaging according to claim 1, wherein the carton and lid are fully recyclable after use.