Cosmetic Packaging Bottle Restricting Backflow

Abstract

The invention relates to a cosmetic packaging bottle restricting backflow, includes a soft tube packaging bottle and a liquid discharge head, and also includes a non-return valve sheet, which is placed within the liquid discharge head. The non-return valve sheet has a one-way flow restriction function, so that contents of the soft tube packaging bottle are squeezed out in one direction and cannot flow back. A cosmetic packaging bottle restricting backflow in the invention has a one-way flow restriction function, so that contents of the soft tube packaging bottle are squeezed out in one direction and cannot flow back, preventing contents from flowing back and causing contamination of contents of the soft tube packaging bottle.

What is claimed is: 
     
         1 . A cosmetic packaging bottle restricting backflow, including a soft tube packaging bottle and a liquid discharge head, wherein: and also including a non-return valve sheet, which is placed within the liquid discharge head, the non-return valve sheet has a one-way flow restriction function, so that contents of the soft tube packaging bottle are squeezed out in one direction and cannot flow back. 
     
     
         2 . The cosmetic packaging bottle restricting backflow according to  claim 1 , wherein: a middle part of the non-return valve sheet is provided with a cross-shaped cutout, the non-return valve sheet is closed in the normal state, the non-return valve sheet is squeezed by the contents to open upward to discharge contents. 
     
     
         3 . The cosmetic packaging bottle restricting backflow according to  claim 2 , wherein: the mouth of the soft tube packaging bottle is provided with a flow restriction seat, the non-return valve sheet is attached to an upper part of the flow restriction seat, and the flow restriction seat is provided with a flow restriction channel; the liquid discharge head has a concave cavity at the bottom, the liquid discharge head is capped on the flow restriction seat, pressed against the circumference of the non-return valve sheet, a middle part of the liquid discharge head is provided with a liquid discharge cavity, and the cross-shaped cutout of the non-return valve sheet can be opened in the direction of the liquid discharge cavity. 
     
     
         4 . The cosmetic packaging bottle restricting backflow according to  claim 3 , wherein: the bottom of the flow restriction seat is a concave cavity structure, the flow restriction channel includes a through-port placed at the side wall of the flow restriction seat, a side groove channel placed between an outer side wall of the flow restriction seat and the liquid discharge head, and an upper groove channel placed in an upper surface of the flow restriction seat; the through-port, side groove channel, and upper groove channel are connected to each other in turn. 
     
     
         5 . The cosmetic packaging bottle restricting backflow according to  claim 4 , wherein: the side groove channel is a spiral structure. 
     
     
         6 . The cosmetic packaging bottle restricting backflow according to  claim 5 , wherein: the upper groove channel extends from the middle to the edge and is connected to the side groove channel. 
     
     
         7 . The cosmetic packaging bottle restricting backflow according to  claim 6 , wherein: the upper part of the liquid discharge head is a liquid discharge column, the inner cavity of the liquid discharge column forms the liquid discharge cavity, and the liquid discharge cavity is connected to the outside of the liquid discharge column. 
     
     
         8 . The cosmetic packaging bottle restricting backflow according to  claim 7 , wherein: the mouth of the soft tube packaging bottle is provided with a threaded holder, the bottom surface of the threaded holder is provided with a limit platform, a middle part of the limit platform is provided with an opening corresponding to the open concave cavity structure of the bottom surface of the flow restriction seat, the flow restriction seat and the liquid discharge head are placed inside the threaded holder, and the outer wall of the liquid discharge head is close to the inner wall of the threaded holder. 
     
     
         9 . The cosmetic packaging bottle restricting backflow according to  claim 8 , wherein: an outer wall of the liquid discharge head and the inner wall of the threaded holder are provided with a slot and a convex ring, respectively, and the slot and the convex ring correspond to each other. 
     
     
         10 . The cosmetic packaging bottle restricting backflow according to  claim 9 , wherein: and also includes an outer cover, the outer cover is screwed onto the threaded holder, and a raised plunger is placed in a middle part of the outer cover, and the plunger closes the upper end of the liquid discharge cavity after the outer cover is installed.