Package Opening System Contour Cutting Lid Bond Integrity

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Solution Overview

Problem

Existing package opening systems fail to securely grip the lid and prevent adhesive contamination when opening packages with a bonded lid and tub, as the clamp may not grip the lid effectively and adhesive can detach during opening.

Innovation Solution

A package opening system that includes a cutter blade and a cutter blade moving device to cut the lid along the contour of the tub's opening, preventing adhesive contamination by maintaining the bond between the lid and tub during opening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a clamp is used to grip the lid for opening, then the lid can be peeled off the tub, but the clamp may fail to grip the lid securely and adhesive may fall off causing contamination

Engineering Contradiction:

Improvelid opening operationVSAvoidgrip reliability and adhesive bond integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the mechanical gripping system (clamp) with a cutting system (cutter blade moving device). Instead of trying to grip and peel the lid, the system cuts along the contour of the tub opening to separate the lid from the tub, eliminating the need for mechanical gripping that causes adhesive failure and contamination.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent segments the lid into a portion to be separated and a portion to remain bonded. By cutting along the contour, the system creates a clean separation line that allows the lid to be opened without compromising the adhesive bond on the tub, thus preventing contamination while enabling easy opening.

Inventive Principle:

Principle #1Segmentation

2Productivity

If the lid is peeled off from the tub, then the package can be opened, but adhesive bonding may fall off and cause contamination

Engineering Contradiction:

Improvepackage opening speedVSAvoidadhesive contamination

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent substitutes the peeling action with a cutting action. The cutter blade moving device cuts along the contour of the tub opening, creating a clean separation without the adhesive bond failing. This eliminates adhesive contamination while maintaining efficient opening speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts the potential harm of adhesive failure into a benefit by using the adhesive bond as a guide for the cutting path. The bond between the lid and tub defines the contour that the cutter blade follows, ensuring clean separation without contamination while maintaining the integrity of the adhesive bond where needed.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20230002099A1Package opening system

Publication Date: 2023.01.05 KYOTO SEISAKUSHO CO LTD

AI summary

A package opening system for opening a package in which an outer peripheral edge of a sheet-like lid is bonded to a flange-shaped opening edge of a tub storing a stored object includes: a cutter blade capable of cutting the lid; and a cutter blade moving device configured to stick the cutter blade into the lid and move the cutter blade stuck into the lid in a cutting path along at least part of a contour of an opening of the tub.