Packaging Container with Reclosable Lid and Label

Abstract

The present subject matter relates to a label lid for sealing an opening in a packaging container. The label comprises a facestock layer, a removable adhesive layer, a heat-seal layer, and an optional release coating, wherein the removable adhesive layer does not include a release liner. The removable adhesive layer can be coated on the heat-seal layer or the facestock layer. Optionally, a release coating can be applied to the heat-seal layer or the facestock layer. The composition of the layers used in specific arrangements provides unique performance characteristics for the label for improved sealing, reclosure, and matrix stripping properties.

We claim: 
     
         1 . A process for producing a label lid, the process comprising the steps of:
 (a) providing a facestock layer;   (b) coating a removable adhesive layer to a first side of the facestock layer; and   (c) laminating the first side of the facestock layer to a first side of a heat-seal layer;   wherein the removable adhesive layer does not comprise a release liner.   
     
     
         2 . The process of  claim 1 , further comprising applying a release coating to the first side of heat-seal layer before laminating step (c). 
     
     
         3 . The process of  claim 1 , wherein the peel strength to break the bond between the heat-seal layer and the removable adhesive layer ranges from 200 grams/inch to 300 grams/inch. 
     
     
         4 . The process of  claim 1 , wherein the peel strength to break the bond between the facestock layer and the removable adhesive layer is greater than the peel strength to break the bond between the heat-seal layer and the removable adhesive layer. 
     
     
         5 . The process of  claim 2 , wherein the peel strength to break the bond between the heat-seal layer and the release coating is greater than the peel strength to break the bond between the heat-seal layer and the removable adhesive layer. 
     
     
         6 . The process of  claim 2 , wherein the release coating comprises one or more of silicone, fluoropolymer, polyethylene, polyolefin, polyester, polyvinyl chloride, polyvinyl fluoride, polyvinylidene difluoride, polyvinyl acetate/acrylate, modified polyurethane, polyester, wax, acrylate, acrylic, modified starch, or combinations thereof. 
     
     
         7 . The process of  claim 2 , wherein the coat weight of the release coating in the label ranges from 0.4 g/m 2  to 2 g/m 2 . 
     
     
         8 . The process of  claim 1 , wherein the facestock layer comprises one or more of polyester, oriented nylon, biaxially oriented polypropylene, biaxially oriented polyethylene, polyethylene terephthalate, oriented polyethylene terephthalate, uniaxially oriented high density polyethylene, treated polyolefin, oriented polystyrene, cellophane, polylactic acid, or combinations thereof. 
     
     
         9 . The process of  claim 2 , wherein the facestock layer comprises one or more of BOPP or PET, wherein the coat weight of the release coating in the label ranges from 0.4 g/m 2  to 2 g/m 2 , and wherein the peel strength to break the bond between the heat-seal layer and the removable adhesive layer ranges from 200 grams/inch to 300 grams/inch. 
     
     
         10 . The process of  claim 2 , wherein the peel strength to break the bond between the heat-seal layer and the removable adhesive layer ranges from 200 grams/inch to 300 grams/inch, wherein the peel strength to break the bond between the facestock layer and the removable adhesive layer is greater than 400 grams/inch, wherein the peel strength to break the bond between the heat-seal layer and the release coating is greater than 400 grams/inch. 
     
     
         11 . The process of  claim 1 , wherein the break strength of the matrix is at least 700 kg/cm 2  at a production speed in a range from 50 ft/min to 300 ft/min. 
     
     
         12 . A process for producing a label, the process comprising the steps of:
 (a) providing a heat-seal layer;   (b) coating a removable adhesive layer to a first side of the heat-seal layer; and   (c) laminating the first side of the heat-seal layer to a first side of a facestock layer;   wherein the removable adhesive layer does not comprise a release liner.   
     
     
         13 . The process of  claim 12 , further comprising applying a release coating to the first side of facestock layer before laminating step (c). 
     
     
         14 . The process of  claim 13 , wherein the peel strength to break the bond between the facestock layer and the removable adhesive layer ranges from 200 grams/inch to 300 grams/inch, wherein the peel strength to break the bond between the heat-seal layer and the removable adhesive layer is greater than 400 grams/inch, wherein the peel strength to break the bond between the facestock layer and the release coating is greater than 400 grams/inch. 
     
     
         15 . The process of  claim 12 , further comprising applying a release coating to the first side of heat-seal layer before coating step (b). 
     
     
         16 . The process of  claim 15 , wherein the peel strength to break the bond between the heat-seal layer and the removable adhesive layer ranges from 200 grams/inch to 300 grams/inch, wherein the peel strength to break the bond between the facestock layer and the removable adhesive layer is greater than 400 grams/inch, wherein the peel strength to break the bond between the heat-seal layer and the release coating is greater than 400 grams/inch. 
     
     
         17 . The process of  claim 12 , wherein the release coating is selected from the group comprising silicone, fluoropolymer, polyethylene, polyolefin, polyester, polyvinyl chloride, polyvinyl fluoride, polyvinylidene difluoride, polyvinyl acetate/acrylate, modified polyurethane, polyester, wax, acrylate, acrylic, modified starch, or combinations thereof. 
     
     
         18 . The process of  claim 12 , wherein the coat weight of the release coating in the label ranges from 0.4 g/m 2  to 2 g/m 2 . 
     
     
         19 . The process of  claim 12 , wherein the facestock layer comprises one or more of polyester, oriented nylon, biaxially oriented polypropylene, biaxially oriented polyethylene, polyethylene terephthalate, oriented polyethylene terephthalate, uniaxially oriented high density polyethylene, treated polyolefin, oriented polystyrene, cellophane, polylactic acid, or combinations thereof. 
     
     
         20 . The process of  claim 12 , wherein the facestock layer comprises one or more of BOPP or PET, and wherein the coat weight of the release coating in the label ranges from 0.4 g/m 2  to 2 g/m 2 . 
     
     
         21 . The process of  claim 12 , wherein the break strength of the matrix is at least 700 kg/cm 2  at a production speed in a range of 50 ft/min to 300 ft/min. 
     
     
         22 . A process for producing a label, the process comprising the steps of:
 (a) providing a facestock layer;   (b) providing a heat-seal layer having a release coating on a first side;   (c) coating a removable adhesive layer to the first side of the heat-seal layer;   (d) laminating the first side of the heat-seal layer to the first side of a facestock layer;   (e) die-cutting the label lid to form a plurality of labels surrounded by a matrix; and   (f) stripping the matrix from the plurality of labels,   wherein the removable adhesive layer does not comprise a release liner.