Cyclic Olefin Copolymer Container Neck to Prevent Liquid Collection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid content collects in the neck portion of resin containers with smaller diameters during storage, leading to unintended discharge upon opening.
Innovation Solution
A resin container with a container body made of resin, featuring a neck portion with an inner diameter of 0.5 mm to 8.0 mm and an inner wall surface of cyclic olefin copolymer, along with a multilayer structure including cyclic olefin copolymer and linear low-density polyethylene, to prevent liquid collection and facilitate controlled discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the neck portion diameter is reduced to control liquid discharge, then the outlet control is improved, but liquid collection in the neck portion occurs during storage
Solution Approach 1:
The patent specifies a particular diameter range (0.5 mm to 8.0 mm) for the neck portion to prevent liquid collection while maintaining controlled discharge. This parameter optimization resolves the contradiction by finding the optimal size that balances both liquid control and prevention of unwanted accumulation.
Solution Approach 2:
The inner wall surface uses cyclic olefin copolymer material which provides specific surface properties that prevent liquid adhesion and collection in the neck portion, while allowing controlled discharge through the outlet. The material composition helps resolve the contradiction between controlling discharge and preventing liquid accumulation.
2Ease of operation
If the outlet diameter is made smaller than the body portion for controlled dispensing, then the dispensing control is improved, but liquid content flies out upon opening due to collection
Solution Approach 1:
By optimizing the outlet diameter to be within 0.5 mm to 8.0 mm and smaller than the body portion, the patent achieves controlled dispensing while preventing the pressure buildup that causes unintended discharge. The specific dimensional parameters resolve the reliability issue.
Solution Approach 2:
The neck portion and outlet have different diameter characteristics compared to the body portion, creating local structural differences that control liquid flow behavior. This local quality differentiation enables both controlled dispensing and prevention of unintended discharge.
3Manufacturing precision
If a smaller diameter neck portion is used for precise liquid expulsion, then the expulsion precision is improved, but liquid collection occurs during storage
Solution Approach 1:
The patent defines a specific diameter range (0.5 mm to 8.0 mm) for the neck portion that maintains precise liquid expulsion capability while preventing liquid collection during storage. This parameter specification resolves the contradiction between precision and collection prevention.
Solution Approach 2:
The use of cyclic olefin copolymer for the inner wall surface provides material properties that prevent liquid adhesion in the neck portion, maintaining expulsion precision without causing liquid collection during storage.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention is a resin container in which an inner wall surface of a container body includes a cyclic olefin copolymer, and a diameter upstream of an outlet of the container body ranges from 0.5 mm to 8.0 mm.