Flat-Pack Picture Frame Assembly Using Flexible Wrap Panels

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Solution Overview

Problem

Conventional picture framing systems are bulky and inefficient for storage and shipping due to enclosed space, posing financial and environmental challenges.

Innovation Solution

A flat-packed framing system using a flexible side panel that wraps around a rigid back plate with retaining tabs and fasteners, allowing easy assembly and disassembly by the end-user.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of stationary object

If conventional solid timber picture frames are used, then structural strength and stability are maintained, but storage and shipping volume increases significantly due to enclosed empty space

Engineering Contradiction:
Improvestorage and shipping volumeVSAvoidframe structural strength
Core Design Contradiction:
Volume of stationary objectVSStrength

Solution Approach 1:

The frame is divided into separate components: a Back Plate, Side Panels, and a Window element. These segments can be stored flat and assembled only when needed, eliminating the volume problem of conventional enclosed frames while maintaining structural integrity through the assembly of multiple components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The Window element nests within the Back Plate, and both nest within the Side Panels when assembled. This nested configuration allows all components to be stored in a compact flattened state, dramatically reducing storage and shipping volume compared to conventional frames.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Weight of stationary object

If conventional enclosed frame structures are used, then structural stability is maintained, but weight increases due to additional materials

Engineering Contradiction:
Improveframe weightVSAvoidframe structural stability
Core Design Contradiction:
Weight of stationary objectVSStability of the object's composition

Solution Approach 1:

By segmenting the frame into essential functional components only (Back Plate, Side Panels, Window), unnecessary materials are eliminated. The segmented design maintains structural stability through the interconnection of components while reducing overall weight.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The Side Panels are made from flexible material such as plywood that can wrap around the perimeter. This flexible shell approach provides structural stability through the wrapping and engagement mechanism while using thinner, lighter materials compared to conventional solid timber frames.

Inventive Principle:
Principle #30Flexible shells and thin films

3Ease of operation

If conventional fixed frame assemblies are used, then structural integrity is maintained, but ease of assembly and disassembly deteriorates

Engineering Contradiction:
Improveease of assembly and disassemblyVSAvoidframe structural integrity
Core Design Contradiction:
Ease of operationVSStrength

Solution Approach 1:

The frame transitions from a static conventional design to a dynamic assembly system. The Side Panels can be easily wrapped around and engaged with the Back Plate, and the Fastener provides a simple mechanism for assembly and disassembly. This dynamic approach maintains structural integrity during use while enabling easy reconfiguration for storage.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The Fastener mechanism is designed to be easily operated by the end-user without requiring special tools or expertise. The user can independently assemble and disassemble the frame by engaging and disengaging the fastener, maintaining structural integrity while providing ease of operation.

Inventive Principle:
Principle #25Self-service

4Volume of moving object

If conventional timber frames with glass and timber panels are used, then protection and display function is maintained, but storage efficiency deteriorates due to enclosed empty space

Engineering Contradiction:
Improveshipping volumeVSAvoidpicture protection function
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The Window element containing the picture nests within the Back Plate, which in turn nests within the Side Panels. This nested configuration protects the picture while allowing the entire assembly to be compressed to a flat state for efficient shipping and storage, eliminating wasted volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

By segmenting the protective structure into discrete components (Back Plate, Side Panels, Window), the system maintains picture protection functionality while allowing each component to be optimized for compact storage. The segmented design eliminates enclosed empty space that would otherwise increase shipping volume.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4331438B1Flat pack picture framing system
Publication Date: 2026.04.08 PUDNEY ARAN
  • EP4331438B1 patent drawingFigure 1
  • EP4331438B1 patent drawingFigure 2
  • EP4331438B1 patent drawingFigure 3

AI summary

A system of framing pictures or artwork which can be manufactured and packaged flat for shipping and storage, then assembled and disassembled easily by the end user, consisting of a rigid back plate (1) and window (3), and a flexible side panel (2) to wrap around the backplate (1) and form the frame element of the invention. The method of assembly and dis-assembly allows the user to easily collapse the frame if required for flat storage.