Integral Container Closure With Through-Opening to Cut Cap Material

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Solution Overview

Problem

Existing caps for containers are made of two parts, which results in excessive material usage, increasing production costs and weight.

Innovation Solution

A closing device with an integral main body and lid, featuring a through opening that allows a portion of the main body's outer face to be visible in the closed position, reducing material usage and maintaining a continuous surface for aesthetic and functional benefits.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the cap is made of two separate parts (main body and lid), then the structural integrity and sealing function are improved, but the amount of material used increases, leading to higher weight and production costs

Engineering Contradiction:
Improvesealing functionVSAvoidamount of material
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges the main body and lid into a single integral component made by injection molding. The through-opening in the lid allows the main body's outer face to be visible, creating a unified structure that reduces material usage while maintaining the sealing function through the integrated design and hinge mechanism.

Inventive Principle:
Principle #5Merging (Combining)

2Shape

If the lid completely covers the main body in closed position, then the aesthetic appearance is improved, but the material usage increases and cost rises

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidproduction cost
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The patent extracts material from the lid by creating a through-opening that removes the portion of the lid that would otherwise cover the main body's outer face. This extraction reduces material usage and production cost while maintaining aesthetic appeal through the visible continuous surface created by the protruding area.

Inventive Principle:
Principle #2Taking out (Extraction)

3Strength

If the cap uses more material to ensure complete coverage, then the durability and protection are improved, but the weight and production cost increase

Engineering Contradiction:
ImprovedurabilityVSAvoidcap weight
Core Design Contradiction:
StrengthVSWeight of moving object

Solution Approach 1:

The patent applies local quality by creating a protruding area in the main body that fits into the through-opening of the lid. This localized structural feature maintains durability and protection at the interface between lid and main body while reducing the overall material usage and weight of the cap assembly.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS12589922B2Closing device for containers and assembly comprising a container provided with said closing device
Publication Date: 2026.03.31 GIFLOR
  • US12589922B2 patent drawing
  • US12589922B2 patent drawing
  • US12589922B2 patent drawing

AI summary

The present invention refers to a closing device for a container, including a main body suited to be connected to the container and a lid hinged to the main body at the level of a hinge area. The lid includes an inner face facing towards the main body and an outer face opposite the inner face. The main body and the cover are made so that they are integral with each other and a through opening is made between the outer face and the inner face of the lid.