Reinforcing and shape-fixing strip structure for sheet material product

Abstract

A reinforcing and shape-fixing strip structure for sheet material product comprising an end edge at each side of an end port respectively formed with plural through holes, wherein end edge at each side is respectively sleeved with an reinforcing and shape-fixing strip composed of an inner frame sheet and an outer frame sheet, wherein the top of the outer frame sheet is formed with a shield part laterally extended towards the inner side for crossing and shielding the end surface, one of the inner and the outer frame sheet comprise at least a protrusion, wherein the inner and the outer frame sheet are enabled to be in contact through the protrusions passing the through holes, wherein the inner and the outer frame sheet are thermally pressed for the purpose of adhesion and a decoration sheet is provided at the combined location of the reinforcing and shape-fixing strip at each side.

What is claimed is: 
     
         1 . A reinforcing and shape-fixing strip structure for sheet material product comprising a light and thin sheet material and at least formed with an end port allowing objects to be entered from, the end port is formed in a sealed contour status or semi-sealed contour status so as to form an opened end edge;
 wherein, a proper location of a lateral sheet of the sheet material product close to the end edge is formed with a preset amount of through holes with respect to the contour of the end port, so the end edge at each side is respectively sleeved with an reinforcing and shape-fixing strip composed of an inner frame sheet and an outer frame sheet, wherein the top of the outer frame sheet is formed with a shield part laterally extended towards the inner side for crossing and shielding the end surface of the sheet material product, the outer side of the inner frame sheet is formed with at least a protrusion corresponding to the through holes, so when the inner and the outer frame sheet are respectively combined from the inner and the outer side of the sheet material product, the inner and the outer frame sheet are enabled to be in contact through the protrusions passing the through holes, then the inner and the outer frame sheet are processed with a thermal pressing operation thereby thermally pressing and adhering the inner and the outer frame sheet so as to be formed as one piece, so the assembly of the reinforcing and shape-fixing strip being provided on the end edge at each side of the end port of the sheet material product is finished.   
     
     
         2 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein the inner and the outer frame sheet are formed as an elongated frame strip made through plastic injection and cut to a desired length with respect to the side length of the end edge where the assembly is taken place. 
     
     
         3 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein the protrusions formed at the outer side of the inner frame sheet are altered for being formed at the inner side of the outer frame sheet. 
     
     
         4 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein a decoration sheet formed with a shape matched with the contour of the end port is provided at the combined location of the reinforcing and shape-fixing strip assembled on the end edge at each side of the end port of the sheet material product. 
     
     
         5 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein the inner and the outer frame sheet are formed through injection molding in a linear status. 
     
     
         6 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein the inner and the outer frame sheet are formed through injection molding in an arc or curved status. 
     
     
         7 . The reinforcing and shape-fixing strip structure for sheet material product according to  claim 1 , wherein wing parts are outwardly extended from the top of the outer frame sheet.