Container having wall portions with different pressure resistance

Abstract

A container having wall portions with different pressure resistance includes a chamber with having a predetermined volume for containing an amount of fluid therein, and a mouth located at a top of the chamber and sealed by a fluid dispenser head assembled thereto. The chamber has a super-thin compressible wall of a predetermined thickness that forms a main body of the container, and two or more pressure-resistible non-deformable stiff supporting ribs located on the compressible wall at predetermined positions and having a thickness larger than that of the compressible wall. Each time the fluid dispenser head is depressed, a pressure difference is generated in the container to result a contraction of the compressible wall and dispensing of the contained fluid via the fluid dispenser head. When the contracted compressible wall finally becomes completely flattened, any remained fluid in the container can be pushed out to avoid unnecessary waste of the fluid.

1 . A container having wall portions with different pressure resistance, comprising a fluid containing chamber having a predetermined volume for containing an amount of fluid therein, and a mouth located at a top of the fluid containing chamber and sealed by a fluid dispenser head assembled thereto; and the fluid containing chamber having a super-thin compressible wall of a predetermined thickness that forms a main body of the container, and two or more pressure-resistible non-deformable stiff supporting ribs formed on the compressible wall at predetermined positions and having a thickness larger than that of the compressible wall. 
   
   
       2 . The container having wall portions with different pressure resistance as claimed in  claim 1 , wherein the compressible wall has a thickness between 0.13 mm and 0.2 mm. 
   
   
       3 . The container having wall portions with different pressure resistance as claimed in  claim 2 , wherein the supporting ribs each have a thickness between 0.5 mm and 1 mm. 
   
   
       4 . The container having wall portions with different pressure resistance as claimed in  claim 1 , wherein the supporting ribs have a geometrical cross section that may be determined according to an intended use of the container. 
   
   
       5 . The container having wall portions with different pressure resistance as claimed in  claim 2 , wherein the supporting ribs have a geometrical cross section that may be determined according to an intended use of the container. 
   
   
       6 . The container having wall portions with different pressure resistance as claimed in  claim 3 , wherein the supporting ribs have a geometrical cross section that may be determined according to an intended use of the container. 
   
   
       7 . The container having wall portions with different pressure resistance as claimed in  claim 4 , wherein the fluid containing chamber is integrally formed using two mold halves through injection stretched blow molding process, and the supporting ribs are formed by providing grooves at a parting line of the two mold halves. 
   
   
       8 . The container having wall portions with different pressure resistance as claimed in  claim 5 , wherein the fluid containing chamber is integrally formed using two mold halves through injection stretched blow molding process, and the supporting ribs are formed by providing grooves at a parting line of the two mold halves. 
   
   
       9 . The container having wall portions with different pressure resistance as claimed in  claim 6 , wherein the fluid containing chamber is integrally formed using two mold halves through injection stretched blow molding process, and the supporting ribs are formed by providing grooves at a parting line of the two mold halves. 
   
   
       10 . The container having wall portions with different pressure resistance as claimed in  claim 7 , wherein the supporting ribs are formed by providing two corresponding grooves at two opposite sides of the parting line of the two mold halves. 
   
   
       11 . The container having wall portions with different pressure resistance as claimed in  claim 8 , wherein the supporting ribs are formed by providing two corresponding grooves at two opposite sides of the parting line of the two mold halves. 
   
   
       12 . The container having wall portions with different pressure resistance as claimed in  claim 9 , wherein the supporting ribs are formed by providing two corresponding grooves at two opposite sides of the parting line of the two mold halves. 
   
   
       13 . The container having wall portions with different pressure resistance as claimed in  claim 1 , wherein the fluid containing chamber is in a form selected from the group consisting of a bottle, a cup, and a bag.