Container Liner Front Wall Support Straps

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Solution Overview

Problem

The use of galvanized bars for supporting liners in containers is costly due to their weight and length, and they are often discarded after a single use, making transportation difficult and inefficient.

Innovation Solution

The implementation of upwardly extending straps that are fixed between the bottom and upper straps, extending loosely along the front wall and attachable to the container's inner walls, providing effective support to the heavily loaded front wall without increasing the liner's weight and ensuring the straps are not lost during transport.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If galvanized bars are used to support the liner, then adequate support and retention is achieved, but the weight and length increase significantly making transport difficult and costly

Engineering Contradiction:

Improvesupport capabilityVSAvoidweight of bars

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent replaces rigid galvanized bars with flexible straps made of textile or similar material. These straps extend horizontally over the front wall and can be attached to inner walls of the container, providing the necessary support and retention functionality while dramatically reducing weight and improving transportability.

Inventive Principle:

Principle #30Flexible shells and thin films

2Strength

If galvanized bars are used to support the liner, then adequate support is provided, but the device complexity and cost increase

Engineering Contradiction:

Improvesupport capabilityVSAvoidcomplexity of bar system

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The patent substitutes complex rigid bar structures with simple flexible straps that can be easily attached and detached. This simplification reduces device complexity while maintaining the essential support function, and the straps can be integrated with the liner itself rather than being separate components.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The straps serve multiple functions: they provide structural support to prevent bulging, retain the liner and contents during tilting, and can be attached to container walls for additional security. This multi-functionality eliminates the need for separate support structures, reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Strength

If galvanized bars are used, then the front wall is supported, but the bars are discarded after single use increasing waste

Engineering Contradiction:

Improvesupport capabilityVSAvoiddiscarded bars

Core Design Contradiction:

StrengthVSLoss of substance

Solution Approach 1:

The patent designs the straps to be reusable and recoverable. After the liner is emptied and removed, the straps remain attached to the liner and can be reused with the next liner. This eliminates the single-use disposal characteristic of galvanized bars and reduces material waste.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The straps are integrated with the liner as a combined system rather than being separate disposable components. This merging ensures that the support structure travels with the liner throughout its service life, preventing loss and enabling repeated use across multiple liners.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7516863B2Liner for a container

Publication Date: 2009.04.14 SIGNODE NETHERLANDS BV

AI summary

A liner for a container has an upper wall, a bottom wall as well as a front wall, a rear wall and side walls interconnecting the upper wall and the bottom wall. Straps extending over the front wall are provided, which straps are provided with extensions extending outside the front wall, which extensions can be attached to inner walls of the container with their free ends.