Non-uniformly perforated plastic bag

Patent metadata

Field	Value
Publication number	US-2017305651-A1
Application number	US-201715646698-A
Country	US
Kind code	A1
Filing date	Jul 11, 2017
Priority date	Oct 25, 2012
Publication date	Oct 26, 2017
Grant date	—

Abstract

Provided is a perforated plastic bag wherein the volume of said bag is 100 liters or more; wherein the average perforation diameter is 500 micrometers or less; wherein said plastic bag comprises a lower zone and a top zone, wherein the perforation density of said lower zone is greater than the perforation density of said top zone. Also provided is a method of using such a plastic bag.

First claim

1 . (canceled)

2 . (canceled)

3 . A method of treating produce comprising
(a) placing a first portion of produce in a bottom a plastic bag; (b) after step (a), folding said bag to form a layer of bag material over said first portion of produce; (c) after step (b), placing a second portion of produce in said bag above said layer of bag material; and (d) after step (c), closing said bag, wherein the plastic bag has a volume of 100 liters or more; wherein the plastic bag comprises a plurality of perforations each having an average perforation diameter of 500 micrometers or less; wherein the plastic bag comprises a lower zone and a top zone, and wherein the lower zone has a perforation density that is greater than a perforation density of perforation density of the top zone.

4 . The method of claim 3 , wherein said produce comprises bananas.

5 . The method of claim 4 , wherein the ratio of the banana-specific perforation of the bottom enclosure of said bag to the banana-specific perforation of the top enclosure of said bag is from 0.3:1 to 5:1.

6 . The method of claim 3 , further comprising the step of
(e) after step (d), storing said bag for 7 days or more at 20° C. or lower.

7 . The method claim 6 , further comprising the step of
(f) after step (e), exposing said bag to an atmosphere that contains ethylene.

8 . The method claim 7 , further comprising the step of
(g) after step (f), exposing said bag to an atmosphere that contains a cyclopropene compound.

9 . The method of claim 3 , further comprising placing the plastic bag in a box.

10 . The method of claim 9 , further comprising placing a kraft paper liner in the box prior to placing the plastic bag in the box.

11 . The method of claim 10 , wherein the kraft paper liner comprises perforations.

12 . The method of claim 3 , wherein the first portion of produce and the second portion produce have a combined weight of 4 kg or more.

13 . The method of claim 12 , wherein the combined weight of the first portion of produce and the second portion of produce is 30 kg or less.

14 . The method of claim 7 , wherein the concentration of ethylene in the atmosphere is 20 ppm or higher.

15 . The method of claim 7 , wherein the concentration of ethylene in the atmosphere is 1,000 ppm or less.

16 . The method of claim 7 , wherein the bag is exposed to the atmosphere that contains ethylene for 48 hours or less.

17 . The method of claim 8 , wherein the step (g) is performed at a temperature of 8° C. or higher.

18 . The method of claim 8 , wherein step (g) is performed at a temperature of 18.3° C. or lower.

19 . The method of claim 8 , wherein step (g) is performed for 4 hours or more.

20 . The method of claim 8 , wherein step (g) is performed for 24 hours or less.

21 . The method of claim 3 , wherein the ratio of said perforation density of said lower zone to said perforation density of said top zone is 1.1:1 or higher.

22 . The method of claim 3 , wherein the perforation density of the top zone of the plastic bag is 2 mm 2 of perforation per m 2 of a surface area of the bag or higher.

Assignees

• Agrofresh Inc

Inventors

• Balasubramanian Aishwaraya
• Mir Nazir
• Mcgee Robert L
• Menning Bruce A

Classifications

• B65D81/2084

  in a flexible container · CPC title

• A23V2002/00

  Food compositions, function of food ingredients or processes for food or foodstuffs · CPC title

• B65D33/01 Primary

  Ventilation or drainage of bags · CPC title

• B65D77/062

  Flexible containers disposed within polygonal containers formed by folding a carton blank · CPC title

• B65D81/2023

  in a flexible container (B65D81/2038 takes precedence) · CPC title