Packaging Frame With Slotted Panel And Retention Sheet

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Solution Overview

Problem

Existing retention packaging structures provide limited enhancement in protective qualities while being costly, and there is a need to reduce material usage without compromising protection during product shipment.

Innovation Solution

A frame design for packaging assemblies that includes a panel with slots for closure flaps and a sheet attached to the panel flaps, allowing for efficient retention of products within a box by folding the flaps to enclose the product, thereby reducing material usage while maintaining protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing retention packaging structures are used, then product protection is provided, but material usage is excessive and cost is high

Engineering Contradiction:
Improveproduct protectionVSAvoidmaterial usage
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The packaging structure is divided into distinct functional segments: a base layer, a retention frame with four separate flaps (front, rear, left, right), and a closure flap. Each segment performs a specific function, allowing the structure to provide comprehensive protection while using minimal material. The frame segments work together to create retention pockets that secure the product without requiring excessive packaging materials.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs a thin sheet material (such as plastic film or flexible polymer) to create the retention frame and flaps. This flexible thin film structure provides sufficient mechanical support for product retention while dramatically reducing material consumption compared to rigid traditional packaging. The thin film can be molded into three-dimensional retention pockets that adapt to product shapes.

Inventive Principle:
Principle #30Flexible shells and thin films

2Loss of substance

If material usage is reduced, then cost decreases, but protective qualities may be compromised

Engineering Contradiction:
Improvematerial usageVSAvoidprotective qualities
Core Design Contradiction:
Loss of substanceVSReliability

Solution Approach 1:

The packaging structure concentrates material only where protection is needed - at the corners and edges of the product - rather than uniformly distributing material throughout. The retention frame places thin film material strategically at critical retention points, providing enhanced protective qualities at locations most susceptible to damage while minimizing overall material usage.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent combines different material properties within the thin film structure, potentially using multi-layer composite materials that integrate strength, flexibility, and cushioning properties. This allows the reduced material quantity to still provide comprehensive protection by leveraging the synergistic effects of composite material characteristics.

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If a simple frame structure is used, then manufacturing cost decreases, but retention effectiveness is limited

Engineering Contradiction:
Improvemanufacturing costVSAvoidretention effectiveness
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The retention frame is pre-formed with four flaps and retention pockets before product insertion. This preliminary structuring allows the simple frame to provide complex retention functionality - the flaps are already positioned to create secure pockets that adapt to the product, eliminating the need for complex assembly steps while maintaining high retention effectiveness.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The frame structure incorporates flexible flaps that can dynamically adjust to different product shapes and sizes. The flaps move and conform during product insertion, then lock into position to provide secure retention. This dynamic adaptability allows a simple frame design to achieve effective retention across multiple product types without increasing manufacturing complexity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3191378B1Packaging assemly
Publication Date: 2019.01.02 SEALED AIR U S
  • EP3191378B1 patent drawingFigure 1
  • EP3191378B1 patent drawingFigure 2
  • EP3191378B1 patent drawingFigure 3

AI summary

A frame (14) is useful in a packaging assembly including a box. The frame includes a panel(16) and a sheet (40). The panel has a panel length (L1) that is greater than the box length. The panel has a panel width (W1) that is greater than the box width. The panel defines a left slot (26) configured to receive the left closure flap of the box and a right slot (28) configured to receive the right closure flap of the box. The panel includes a left panel flap (30) extending from the left slot to the left edge (18) of the panel, a right panel flap (32) extending from the right slot to the right edge (20) of the panel, a front panel flap (34) extending from the left panel flap to the right panel flap; and a rear panel flap (36) extending from the left panel flap to the right panel flap. The left panel flap is foldably connected to the front panel flap and to the rear panel flap. The right panel flap is foldably connected to the front panel flap and the rear panel flap. The panel defines a panel opening (38) circumscribed by the left, right, front, and rear panel flaps. The sheet (40) is attached to the front panel flap and the rear panel flap and extends over the panel opening.