Method of blow-molding and blow-molded product

Abstract

A method of blow-molding comprising forming a parison (tube) of a thermoplastics material, closing a mold around the parison, injecting compressed gas into the parison through a blowing hole to form a molded product that is shaped according to the shape of the mold, then deforming a seal forming portion of the molded product with a heated sealing tool to seal the blowing hole. The seal-forming portion may comprise a tubular collar that surrounds the blowing hole.

1 . A blow-molded product comprising a hollow molded body portion and a seal element that seals a blowing hole in the body portion, wherein the body portion and the seal element are made of a thermoplastics material and the seal element comprises a deformed seal forming portion of the body portion.  
     
     
         2 . The blow-molded product according to  claim 1 , wherein the seal-forming portion is located within a recess provided in the molded body portion.  
     
     
         3 . The blow-molded product according to  claim 1 , wherein the blow-molded product comprises a wall panel of a container.  
     
     
         4 . The blow-molded product according to  claim 1 , wherein the seal-forming portion is located adjacent the blowing hole.  
     
     
         5 . The blow-molded product according to  claim 1 , wherein the seal forming portion includes a tubular collar that surrounds the blowing hole.  
     
     
         6 . The blow-molded product according to  claim 5 , wherein the tubular collar extends outward from the molded product.