Injection molded container made of plastic

Abstract

An injection molded cup-shaped container, made of plastic with a bottom and a container wall, which have a uniform thickness, from which bead-like thickenings protrude inward or outward. The thickenings start at a gate location in the bottom, have a radial course on the bottom, and extend on the container wall at a slant to the top edge of the container. The bead-like thickenings on the container wall and on the bottom are designed in such a way that the thickenings do not cross and each have a radius of curvature having a constant sign.

1 . An injection-molded plastic container, comprising:
 a bottom;   a container wall; and   an insert element which is rigidly connected to the container in a label region on an outside of the container wall,   wherein the container is produced by in-mold labelling process,   wherein the bottom and the container wall have a uniform thickness,   wherein ridge-like thickenings protrude inwards or outwards from the bottom and the container wall,   wherein the ridge-like thickenings start from a gate mark in the bottom, have a radial course on the bottom, and extend on the container wall obliquely towards a top edge of the container,   wherein the ridge-like thickenings do not cross on the container wall and on the bottom, and   wherein the ridge-like thickenings are formed as flow promoters configured to provide a uniform flow front of the plastic material during the in-mold labelling process.   
     
     
         2 . The container of  claim 1 , wherein the ridge-like thickenings are formed such that during the in-mold labelling process the uniform flow front of liquid plastic material spreads out on the bottom and on the container wall at a constant speed in each case. 
     
     
         3 . The container of  claim 1 , wherein a course and a cross-section of the ridge-like thickenings are optimized for specific product requirements. 
     
     
         4 . The container of  claim 1 , wherein the ridge-like thickenings have a constant and at least partly round cross section. 
     
     
         5 . The container of  claim 1 , further comprising:
 branches starting from the ridge-like thickenings,   wherein a length and cross section of the branches are smaller than a length and cross section of the ridge-like thickenings,   wherein the branches do not cross one another or the ridge-like thickenings.   
     
     
         6 . The container of  claim 1 , further comprising:
 a top edge thickening on the top edge of the container,   wherein the top edge thickening is formed cohesively with the container wall.   
     
     
         7 . The container of  claim 1 , wherein the container wall includes a first region and a second region,
 wherein, in the first region, the ridge-like thickenings have a greater cross section than in the second region, and   wherein the container wall has a greater height in the first region than in the second region.   
     
     
         8 . The container of  claim 1 , wherein the container wall includes a first region and a second region,
 wherein, in the first region, the ridge-like thickenings are closer together than in a second region, and   wherein the container wall has a greater height in the first region than in the second region.   
     
     
         9 . The container of  claim 1 , further comprising:
 a label,   wherein the label has different edge lengths,   wherein, during production of the ridge-like thickenings, the label is shaped such that the uniform flow front of the plastic material is provided to all ends of the label at a same time.   
     
     
         10 . The container of  claim 6 , wherein the top edge thickening is formed integrally with the container wall. 
     
     
         11 . The container of  claim 1 , wherein the container wall includes a first region and a second region,
 wherein, in the first region, the ridge-like thickenings have a greater cross section than in the second region.   
     
     
         12 . The container of  claim 1 , wherein the container wall includes a first region and a second region,
 wherein, in the first region, the ridge-like thickenings are closer together than in a second region.   
     
     
         13 . The container of  claim 1 , wherein the container wall includes a first region and a second region,
 wherein the container wall has a greater height in the first region than in the second region.