High burst closure assembly for large packages

Abstract

The present disclosure relates to a high burst closure which allows for bottom filling of packages, such as large bags, and further provides increased resistance to damage from the dropping or shock loading of the filled package. This is achieved by providing profiles that combine an upper portion of one profile and its related flange, so as to form a juncture above a peel seal joining one profile to the other, so that external forces on a package or bag from bottom filling or shock loading are directed toward the juncture thereby causing a shear force against the peel seal or other frangible connection, thereby increasing the resistance of the package to external forces.

1 . A closure for a package, including:
 a first profile with a first upper portion and a first flange, further including an interior flange with a first end and a second end, the first end being attached to an interior of the first upper portion;   a second profile with a second upper portion and a second flange; and   a separable connection connecting the second end of the interior flange and a generally central area of the second profile, wherein the separable connection is more resistant to a shear force than to a peeling force.   
   
   
       2 . The closure of  claim 1  wherein a load on the first and second flanges applies a shear force to the separable connection. 
   
   
       3 . The closure of  claim 2  wherein the separable connection is a first peel seal. 
   
   
       4 . The closure of  claim 1  wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection. 
   
   
       5 . The closure of  claim 1  wherein the first and second upper portions are sealed together by a hard seal. 
   
   
       6 . The closure of  claim 5  wherein the first and second upper portions include respective first and second lines of weakness. 
   
   
       7 . The closure of  claim 6  wherein the first and second lines of weakness are perforated lines. 
   
   
       8 . The closure of  claim 6  wherein the first and second lines of weakness are scored lines. 
   
   
       9 . The closure of  claim 1  wherein the first and second upper portions are joined by a second peel seal. 
   
   
       10 . The closure of  claim 1  wherein the second profile is made from a single sheet of web material. 
   
   
       11 . The closure of  claim 1  wherein the first and second flanges are attached to an exterior of respective first and second package walls. 
   
   
       12 . The closure of  claim 1  wherein the first and second flanges are attached to an interior of respective first and second package walls. 
   
   
       13 . The closure of  claim 1  further including an extension extending from one of the first and second flanges, the extension including an aperture thereby serving as a handle. 
   
   
       14 . A closure for a package, including:
 a first profile with a first upper portion and a first flange, the first upper portion having an upper end and a lower end, wherein the first flange is connected to a generally central area of the first upper portion;   a second profile with a second upper portion and a second flange, the second upper portion having an upper end; and   a separable connection connecting the lower end of the first upper portion and a generally central area of the second profile, wherein the separable connection is more resistant to a shear force than to a peeling force.   
   
   
       15 . The closure of  claim 14  wherein a load on the first and second flanges applies a shear force to the separable connection. 
   
   
       16 . The closure of  claim 15  wherein the separable connection is a first peel seal. 
   
   
       17 . The closure of  claim 14  wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection. 
   
   
       18 . The closure of  claim 14  wherein the upper ends of the first and second upper portions are sealed together by a hard seal. 
   
   
       19 . The closure of  claim 18  wherein the first and second upper portions include respective first and second lines of weakness. 
   
   
       20 . The closure of  claim 19  wherein the first and second lines of weakness are perforated lines. 
   
   
       21 . The closure of  claim 19  wherein the first and second lines of weakness are scored lines. 
   
   
       22 . The closure of  claim 14  wherein the upper ends of the first and second upper portions are joined by a second peel seal. 
   
   
       23 . The closure of  claim 14  wherein the second profile is made from a single sheet of web material. 
   
   
       24 . The closure of  claim 14  wherein the first and second flanges are attached to an exterior of respective first and second package walls. 
   
   
       25 . The closure of  claim 14  wherein the first and second flanges are attached to an interior of respective first and second package walls. 
   
   
       26 . The closure of  claim 14  further including an extension extending from one of the first and second flanges, the extension including an aperture thereby serving as a handle. 
   
   
       27 . A closure for a package, including:
 a first profile with a first upper portion and a first flange formed from a single sheet of web, wherein the single sheet is folded below the first upper portion and connected to a generally central area of the first upper portion thereby forming a second fold and the first flange;   a second profile with a second upper portion and a second flange; and   a separable connection connecting the first upper portion and a generally central area of the second profile, wherein the separable connection is more resistant to a shear force than to a peeling force.   
   
   
       28 . The closure of  claim 27  wherein a load on the first and second flanges applies a shear force to the separable connection. 
   
   
       29 . The closure of  claim 28  wherein the separable connection is a first peel seal. 
   
   
       30 . The closure of  claim 27  wherein a load on the first and second flanges is redirected away from the separable connection to a location above the separable connection. 
   
   
       31 . The closure of  claim 27  wherein the first and second upper portions are sealed together by a hard seal. 
   
   
       32 . The closure of  claim 31  wherein the first and second upper portions include respective first and second lines of weakness. 
   
   
       33 . The closure of  claim 32  wherein the first and second lines of weakness are perforated lines. 
   
   
       34 . The closure of  claim 32  wherein the first and second lines of weakness are scored lines. 
   
   
       35 . The closure of  claim 27  wherein the first and second upper portions are joined by a second peel seal. 
   
   
       36 . The closure of  claim 27  wherein the second profile is made from a single sheet of web material. 
   
   
       37 . The closure of  claim 27  wherein the first and second flanges are attached to an exterior of respective first and second package walls. 
   
   
       38 . The closure of  claim 27  wherein the first and second flanges are attached to an interior of respective first and second package walls. 
   
   
       39 . The closure of  claim 27  further including an extension extending from one of the first and second flanges, the extension including an aperture thereby serving as a handle. 
   
   
       40 . The closure of  claim 1  wherein at least a portion of the first flange is formed by at least a portion of a bag wall. 
   
   
       41 . The closure of  claim 14  wherein at least a portion of the first flange is formed by at least a portion of a bag wall. 
   
   
       42 . The closure of  claim 1  wherein the interior flange and the first upper portion are integral with each other. 
   
   
       43 . The closure of  claim 1  wherein the interior flange and the first upper portion are joined by a hard seal. 
   
   
       44 . The closure of  claim 1  wherein at least one of the first and second upper portions are extended and include a handle-sized aperture therein. 
   
   
       45 . The closure of  claim 14  wherein at least one of the first and second upper portions includes a handle-sized aperture therein. 
   
   
       46 . The closure of  claim 27  wherein at least one of the first and second upper portions includes a handle-sized aperture therein. 
   
   
       47 . The closure of  claim 27  wherein the first flange is formed by a portion of a bag wall. 
   
   
       48 . The closure of  claim 14  wherein the first flange is sealed to the generally central area of the first upper portion. 
   
   
       49 . The closure of  claim 14  wherein the first flange is integral with the generally central area of the first upper portion. 
   
   
       50 . The closure of  claim 27  wherein the single sheet is folded below the first upper portion and sealed to a generally central area of the first upper portion.