| 摘要 |
According to one aspect of the present disclosure, a cold cohesive packaging system using tear resistant tape includes a top sheet having an interior surface and at least one top cohesive region defined on the interior surface; a bottom sheet having a bottom interior surface and at least one bottom cohesive region defined on the bottom interior surface; at least one strip embedded in the top sheet or the bottom sheet, the at least one strip being resistant to tearing; and a cohesive, wherein the cohesive is applied in liquid form and adheres as a film to the at least one top cohesive region and the at least one bottom cohesive region, where the cohesive is capable of permanently bonding the top sheet to the bottom sheet when a pressure is applied, and wherein the cohesive comprises a latex-based cohesive with a viscosity of no more than 450 centipoise. |
| 主权项 |
1. A cold seal cohesive packaging system, the system comprising:
a top sheet having a top interior surface, an opposing top exterior surface, and at least one top cohesive region defined on the top interior surface; a bottom sheet having a bottom interior surface, an opposing bottom exterior surface, and at least one bottom cohesive region defined on the bottom interior surface; and a latex-based cohesive film on each of the at least one top cohesive region and the at least one bottom cohesive region having a thickness between 0.007 and 0.0015 inches, wherein the latex-based cohesive film comprises a latex based cohesive in liquid form having a viscosity between 10 and 450 centipoise at 20 revolutions per minute, a density between 8.0 and 9.0 pounds per gallon (lb/gal) at 25° C., a pH between 9.5 and 12, and 23 degrees Celsius, and a solids content between 15 and 65 percent by weight, wherein the latex-based cohesive is capable of permanently bonding the top sheet to the bottom sheet by the latex-based cohesive film when the at least one top cohesive region at least partially contacts the at least one bottom cohesive region and a pressure is applied substantially simultaneously to both the top exterior surface opposite the at least one top cohesive region and to the bottom exterior surface opposite the at least one bottom cohesive region, and wherein the latex-based cohesive has a low pressure sensitivity that requires the applied pressure to be at least 10,000 pounds per square inch to bond the cohesive applied on the at least one bottom cohesive region with the cohesive applied on the at least one top cohesive region, and which once dried is cohesive only to itself and is lacks tackiness. |
