Bag mouth structure for filling liquid sealing bag

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By introducing a one-way valve assembly into the mouth of the liquid sealing bag, automatic sealing is achieved by utilizing the elastic resilience of the sealing plug, thus solving the problem of product oxidation or deterioration caused by poor sealing and realizing the automatic sealing effect of the bag mouth.

CN224198294UActive Publication Date: 2026-05-05FUZHOU JINGTENG SEIKO RUBBER & PLASTIC PROD CO LTD

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Patent Information

Application Number: CN202520954657.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-05-15
Publication Date: 2026-05-05
Estimated Expiration: 2035-05-15

Application Information

Patent Timeline

15 May 2025

Application

CN202520954657.5

05 May 2026

Publication

CN224198294U

IPC: B65D33/36; B65D33/16

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AI Tagging

Application Domain

Bags Sacks

Technology Topics

Liquid product Mouth structure

Technical Efficacy Phrases

Open and close quicklyprevent backflow

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AI Technical Summary

Technical Problem

If the cap of the existing liquid sealing bag is not screwed on in time after filling or is forgotten to be put on, the seal will not be tight, resulting in product oxidation or deterioration and waste.

Method used

A bag mouth structure for a liquid sealing bag is designed, which adopts a one-way valve assembly consisting of a sealing plug and a bushing. The elasticity of the sealing plug is used to form a sealing surface, thereby achieving automatic sealing of the bag mouth and preventing backflow of the medium.

Benefits of technology

Even after the sealed bag is opened, it can still maintain good internal sealing performance, prevent liquid products from oxidizing or deteriorating, simplify the operation process, and improve sealing reliability.

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Abstract

The utility model provides a bag mouth structure for filling a liquid sealing bag, which is applied to the technical field of liquid sealing bags and is characterized by comprising a bag mouth and a one-way valve component mounted in the bag mouth, the one-way valve assembly comprises a sealing rubber plug and a lining which are arranged in the bag mouth, and a sealing face is formed between the sealing rubber plug and the lining through the elastic force effect of the sealing rubber plug. The sealing rubber plug has the technical effects that the sealing rubber plug has certain hardness and rebound resilience, certain pressure is applied to the sealing rubber plug, so that the sealing rubber plug can be shrunk, and a liquid channel is formed between the sealing rubber plug and the bushing, so that a liquid product can be conveniently filled and poured; when the external force is removed, the sealing rubber plug can rebound and abut against the lining through the elastic force of the sealing rubber plug, and a sealing face is formed between the sealing rubber plug and the lining to prevent medium backflow; and the bag mouth can be quickly opened and closed.

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