Adhesive Container Lever Deformation for Stable Dosing

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Solution Overview

Problem

Containers for adhesives face challenges in maintaining storage stability and precise dosing due to the trade-off between thick walls for stability and thin walls for easy metering, which can lead to diffusion and water vapor permeability issues.

Innovation Solution

A container design featuring a lever on the peripheral wall that forms a slot-like intermediate space, allowing for actuation to create overpressure and facilitate precise dosing of the adhesive, combined with a thick peripheral wall for stability and a tapered design for efficient substance discharge.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a thick peripheral wall is used to prevent diffusion and water vapor permeability, then storage stability is improved, but the container becomes harder to deform for dosing

Engineering Contradiction:
Improvestorage stabilityVSAvoiddosing effort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The peripheral wall is segmented into two distinct regions: a thick-walled storage region for stability and a thin-walled dosing region for easy deformation. This segmentation allows each region to be optimized for its specific function without compromising the other.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different wall thicknesses are applied to different parts of the container based on local functional requirements. The storage portion has thick walls to prevent diffusion and permeability, while the dosing portion has thin walls to enable easy compression and adhesive discharge.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If a thin peripheral wall is used to enable precise dosing with little effort, then dosing precision is improved, but diffusion and water vapor permeability increase

Engineering Contradiction:
Improvedosing effortVSAvoidstorage stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The container wall is divided into functional segments where the dosing region uses thin walls for ease of compression while the storage region uses thick walls for stability, resolving the contradiction between dosing effort and storage stability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wall thickness is locally adapted to match functional requirements: thin walls at the dosing end for compliance and thick walls at the storage end for barrier properties, eliminating the need to choose between dosing ease and storage stability.

Inventive Principle:
Principle #3Local quality

3Object-affected harmful factors

If the peripheral wall is made thick for storage stability, then diffusion prevention is improved, but the container requires more force to deform for dosing

Engineering Contradiction:
Improvediffusion preventionVSAvoiddeformation force
Core Design Contradiction:
Object-affected harmful factorsVSForce

Solution Approach 1:

The peripheral wall is segmented into a thick diffusion-barrier section and a thin deformation-friendly section, allowing the container to resist diffusion while requiring minimal force for dosing operations.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wall structure transitions from thick (high barrier property) to thin (high compliance) along the container length, optimizing both diffusion prevention and deformation ease for different functional zones.

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The container achieves both long-term storage stability and precise dosing with minimal manual effort by using a lever to deform the container and create overpressure, ensuring effective discharge of the adhesive while maintaining structural integrity.

Implementation Method 1

By actuating the lever, the peripheral wall of the receiving body is deformed in such a way that an overpressure is created in the receiving body

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP2835321B1Container for dosing a flowable substance
Publication Date: 2016.03.09 UHU GMBH & CO KG
  • EP2835321B1 patent drawingFigure 1~2
  • EP2835321B1 patent drawingFigure 3~4

AI summary

The invention relates to a container for dispensing a free-flowing substance, in particular an adhesive such as cyanoacrylate adhesive, comprising a receiving body (2) which has a circumferential wall (4) and a main axis extending longitudinally along the receiving body. The bottom of the receiving body is formed either by a plug (12) inserted into an open end of the receiving body or by an end wall formed on the circumferential wall. A nozzle or dispensing tip (10) for dispensing a free-flowing substance is arranged on an end face of the receiving body facing away from the bottom, and this nozzle has an outlet opening (9). The container according to the invention is characterized in that a lever (14) is arranged on the circumferential wall, which extends along the main axis and forms an acute angle with the circumferential wall, so that a slot-like gap (16) is formed.