Pulp-molded container structure and molding device and method thereof

Abstract

The present invention relates to a pulp-molded container structure and molding device and method thereof. The molding device comprises a first container molding die and a second container molding die. The first container molding die comprises a snap-fit molding part and a rim molding part, so that a snap-fit section of the pulp-molded container structure and a circular rim section at the edge of the pulp-molded container structure are formed when the first container molding die and the second container molding die are coupled with each other. The rim section and the snap-fit section are used to strengthen the combination of the pulp-molded container structure and an external container, so that the combination is more stable.

What is claimed is: 
     
         1 . A molding device of a pulp-molded container structure for manufacturing of the pulp-molded container structure comprises:
 a first container molding die comprising a first molding unit for shaping of a complete interior profile of the pulp-molded container structure, wherein the first molding unit has a center molding part for shaping of the central section of the pulp-molded container structure and a rim molding part for shaping of the rim section of the pulp-molded container structure and the rim molding part has an annular snap-fit molding part situated at an outer edge and at one side far away from the center molding part for shaping of the snap-fit section of the pulp-molded container structure; and   a second container molding die, comprising a second molding unit for shaping of a complete exterior profile of the pulp-molded container structure and being driven to fit into the first container molding die for shaping of the pulp-molded container structure in 0.5 mm to 1.2 mm thickness between the second container molding die and the first container molding die.   
     
     
         2 . The molding device of a pulp-molded container structure of  claim 1 , wherein the first molding unit optionally comprises a plurality of pore channels penetrating the first molding unit inside and each of the pore channels creating suction during shaping of the pulp-molded container structure, for draining excessive water in pulp slurry, or regulating pressure in a pulp molding process. 
     
     
         3 . The molding device of a pulp-molded container structure of  claim 1 , wherein the second molding unit optionally comprises a plurality of pore channels penetrating the second molding unit inside and each of the pore channels being used to regulate pressure during shaping of the pulp-molded container structure or create suction by the pulp-molded container structure being sucked and separated from the first container molding die. 
     
     
         4 . The molding device of a pulp-molded container structure of  claim 1 , wherein the first container molding die is provided with a strainer adhered to the first molding unit and immersed in paper pulp for construction of a first container pulp-sucking and molding die and the strainer comprises a plurality of fine meshes to filter paper pulp and keep pulp fibers attached and paper pulp deposited on the first container pulp-sucking and molding die, covered over the first molding unit, and correspondingly applied to the second container molding die for shaping of the pulp-molded container structure by the second molding unit in a second container pulp-sucking and molding die. 
     
     
         5 . The molding device of a pulp-molded container structure of  claim 1 , wherein the second container molding die is made with thermally conductive materials for heating and drying paper pulp and shaping the pulp-molded container structure; and
 the first container molding die is made with thermal conductive materials for heating and drying paper pulp and shaping the pulp-molded container structure.   
     
     
         6 . A molding device of a pulp-molded container structure for manufacturing of the pulp-molded container structure comprises:
 a first container molding die comprising a first molding unit for shaping of a complete exterior profile of the pulp-molded container structure;   a second container molding die comprising a second molding unit for shaping of a complete interior profile of the pulp-molded container structure, wherein the second molding unit has a center molding part for shaping of the central section of the pulp-molded container structure and a rim molding part for shaping of the rim section of the pulp-molded container structure, and the rim molding part has an annular snap-fit molding part situated at an outer edge and one side far away from the center molding part for shaping of the snap-fit section of the pulp-molded container structure;   wherein the second container molding die and the first container molding die are coupled with each other for shaping of the pulp-molded container structure in 0.5 mm to 1.2 mm thickness with paper pulp held between the second container molding die and the first container molding die.   
     
     
         7 . The molding device of a pulp-molded container structure of  claim 6 , wherein the first molding unit optionally comprises a plurality of pore channels penetrating the first molding unit inside and each of the pore channels creating suction during shaping of the pulp-molded container structure, for draining excessive water in pulp slurry, or regulating pressure in a pulp molding process. 
     
     
         8 . The molding device of a pulp-molded container structure of  claim 6 , wherein the second molding unit optionally comprises a plurality of pore channels penetrating the second molding unit inside and each of the pore channels being used to regulate pressure during shaping of the pulp-molded container structure or create suction by which the pulp-molded container structure being sucked and separated from the first container molding die. 
     
     
         9 . The molding device of a pulp-molded container structure of  claim 6 , wherein the first container molding die is provided with a strainer adhered to the first molding unit and immersed in paper pulp for construction of a first container pulp-sucking and molding die and the strainer comprises a plurality of fine meshes to filter paper pulp and keep pulp fibers attached and paper pulp deposited on the first container pulp-sucking and molding die, covered over the first molding unit, and correspondingly applied to the second container molding die for shaping the pulp-molded container structure by the second molding unit in a second container pulp-sucking and molding die. 
     
     
         10 . The molding device of a pulp-molded container structure of  claim 6 , wherein the second container molding die is made with thermal conductive materials for heating and drying paper pulp and shaping the pulp-molded container structure; and
 the first container molding die is made with thermal conductive materials for heating and drying paper pulp and shaping the pulp-molded container structure.   
     
     
         11 . A molding method of a pulp-molded container structure for manufacturing of the pulp-molded container structure comprises:
 covering with a pulp slurry on a first molding unit, when a first container pulp-sucking and a molding die being immersed in the pulp slurry;   removing the first container pulp-sucking and the molding die from a pulp slurry;   removing excessive water on the first molding unit by draining from a plurality pore channels and a strainer;   shaping a raw container structure by a second container pulp-sucking and molding die fitting with a first container pulp-sucking and molding die;   sucking the raw container by the second container pulp-sucking and molding die, to remove the raw container from the first container pulp-sucking and molding die;   holding the raw container by a first container heating and molding die;   sealing the raw container in between the first container heating and molding die and a second container heating and molding die;   heating and drying the raw container by the first container heating and molding die and the second container heating and molding die, to shape a pulp-molded container structure.   
     
     
         12 . The molding method of a pulp-molded container structure of  claim 11 , wherein the raw container is shaped with dehydrated paper pulp adhered to and matching the strainer on the first molding unit. 
     
     
         13 . The molding method of a pulp-molded container structure of  claim 11 , wherein the second container pulp-sucking and molding die sucks the raw container through the pore channels. 
     
     
         14 . The molding method of a pulp-molded container structure of  claim 11 , wherein a central section, a rim section, and an annular snap-fit section are formed at the same time on the pulp-molded container when the pulp-molded container is shaped by the first container heating and molding die and the second container heating and molding die. 
     
     
         15 . The molding method of a pulp-molded container structure of  claim 11 , further comprises:
 sucking the pulp-molded container structure by the second container heating and molding die, to separate the pulp-molded container structure from the second container heating and molding die.   
     
     
         16 . A pulp-molded container structure is made by the molding device of  claim 1  or  6 , wherein the container structure comprises:
 a central section at the center and an annular rim section encircling the central section and having a sidewall; 
 a snap-fit section extended from the outside of the sidewall, protruding inwardly in minus degree, and formed integrally with the pulp-molded container structure, and expanded and contracted based on physical elasticity of paper pulp for abutting and fastening a protrusion extended from a rim of an external container that is coupled with the pulp-molded container structure. 
 
     
     
         17 . The pulp-molded container structure of  claim 16 , wherein the rim section is used to clamp an outside wall of the external container which is coupled with the pulp-molded container structure. 
     
     
         18 . The pulp-molded container structure of  claim 16 , wherein the container structure consists of 5% to 55% of Filament, and 45% to 65% of Spun. 
     
     
         19 . The pulp-molded container structure of  claim 16 , wherein the density of the container structure is between 500 kg/m 3  to 700 kg/m 3 . 
     
     
         20 . The pulp-molded container structure of  claim 16 , wherein the thickness of the container structure is between 0.5 mm to 1.2 mm.