Method for manufacturing a pvc film structure for packaging candy

Abstract

The invention relates to a method for manufacturing a spool of PVC film, fine characteristics of which make it possible to manufacture a stiff PVC film that is transparent, colored or metallic, partially coated front and back with a thermosealable lacquer, having a specific chemical composition, which conforms to a defined shape, both in design and angles, characterized in that the enamel-type substance is continuously applied on one side of the longitudinal PVC film, such that the substance is applied to the peripheral portion of said side of the PVC film, the substance not being applied to the center portion, and at continuous application of the enamel substance on the other side of the same longitudinal PVC film, such that the substance is applied to the entire said other side of the PVC film, the film being printed with a design. The problems of jamming of the material are avoided, thus optimizing the packaging speed and substantially improving the look of the final packaged product.

1 . Procedure to manufacture a film ( 12 ) used to pack candies, characterized because it comprises the following steps after unrolling/unwinding ( 1 ) from the reel ( 11 ):
 A. A continuous application ( 2 ) of a sealing resin on one side of the film ( 12 ); the application is done on the peripheral region of the film ( 12 ) side so that the central region of the side is not coated.   B. The continuous application of a resin-type product on the other side of the same film; the application is done on the entire surface of the film using a certain pattern of consecutive diamonds in a machine-direction orientation and a point of contact in one of its vertices.   
     
     
         2 . The procedure to manufacture a film used to pack candies according to  claim 1  and characterized because the application ( 2 , 3 ) is done by a printer or lacquer using the rotogravure method. 
         3 . The procedure to manufacture a film used to pack candies according to  claim 1  and characterized because at least one of the film ( 12 ) sides is color printed before the application ( 2 , 3 ) of the sealing resin. 
     
     
         4 . A film to pack candies that characterizes because it is produced following the manufacturing procedure described in  claim 1 ; it comprises a pair of longitudinal sealing resin bands ( 2 ), and the central region is resin-free. The other film side shows a longitudinal consecutive diamond-shape pattern with a point of contact in one of its vertices. 
     
     
         5 . A film to wrap/pack candies according to  claim 4  and characterized because the diamond-shape pattern comprises two rows of larger diamonds ( 121 ) that are located symmetrically toward the edge of the reel. 
         6 . A film to wrap candies according to  claim 5  and characterized because the distance between the edges of the diamond rows ( 121 ) is 6 millimeters, the wall thickness of said diamonds is 1 millimeter, and the angle α is between 45 and 90 degrees. 
     
     
         7 . A film to wrap candies according to claim  6  characterized because angle α is 90°. 
     
     
         8 . A film to pack candies according to  claim 5  and characterized because the remaining rows form a grid with a smaller contact area. The distance between vertices is 4.2 millimeters, the thickness, 0.5 millimeters, and angle β ranges 45-90 degrees. 
     
     
         9 . A film to pack candies according to  claim 8  and characterized because angle β is 74°. 
     
     
         10 . A film to wrap candies according to  claim 4  and characterized because it is a PVC film ( 12 ). 
     
     
         11 . A film to wrap candies according to  claim 4  and characterized because the sealing resin is produced from a resin, a solvent and selected additives that include antistatic agents, sliding waxes, and antifoaming agents.