Customizable packaging bags

Abstract

A roll of heat sealable bags having markings on the bags to indicate the weight of a portion of bag material located between any two markings. A user can cut off any desired length of the roll to form a customized bag of a desired size. The user can then quickly determine the weight of the customized bag by visual inspection of the number of markings on the bag. After filling the bag with items to be packaged, the markings allow the user to determine an accurate weight of the contents of the bag by weighing the filled bag and subtracting the weight of the bag material from the overall weight of the bag plus contents.

What is claimed is: 
     
         1 . A heat sealable bag, wherein the bag has markings at spaced intervals along a length of the bag, said markings configured to indicate the weight of bag material located between any two markings. 
     
     
         2 . The bag of  claim 1 , said bag comprising two superposed layers of flexible material comprising thermoplastic, said bag having two opposing sides and two opposing ends, wherein the two layers are sealed together along each opposing side, wherein at least one end is open such that a sealed bag enclosure can be formed by heat sealing the at least one open end, and wherein the markings are fixed on at least one layer of material. 
     
     
         3 . The bag of  claim 1 , wherein the markings are staggered. 
     
     
         4 . The bag of  claim 1 , wherein the markings are configured in increments of about one gram of bag material weight. 
     
     
         5 . A roll of heat sealing bags, wherein the roll has markings at spaced intervals along a length of the roll, said markings configured to indicate the weight of bag material located between any two markings. 
     
     
         6 . The roll of bags of  claim 5 , said roll comprising two superposed layers of flexible material comprising thermoplastic, said roll having two opposing sides and two opposing ends, wherein the two layers are sealed together along each opposing side, wherein at least one end is open such that a plurality of individual sealed bag enclosures can be formed by cutting off a length of the roll to form a customized bag portion having two open ends and heat sealing each open end of the bag portion, and wherein the markings are fixed on at least one layer of material. 
     
     
         7 . The roll of bags of  claim 5 , wherein the markings are staggered. 
     
     
         8 . The roll of bags of  claim 5 , wherein the markings are configured in increments of about one gram of bag material weight. 
     
     
         9 . A bag, comprising two superposed layers of flexible material, said bag having two opposing ends, wherein at least one end is open, wherein the size of the bag can be customized by cutting the superposed layers to remove a portion of the material, wherein at least one layer has markings fixed at spaced intervals along a length of the bag, said markings configured to indicate the weight of the remaining portion of the bag. 
     
     
         10 . The bag of  claim 9 , wherein the markings are staggered. 
     
     
         11 . The bag of  claim 9 , wherein the markings are configured in increments of about one gram of bag material weight.