3D-Printed Furniture With Captured Components for Recycling

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Solution Overview

Problem

Furniture waste is problematic due to its composition of multiple materials, making disposal difficult and time-consuming to disassemble for recycling.

Innovation Solution

3D printing methods are used to create multi-component furniture where one component is encapsulated or embedded within another without adhesives or fasteners, allowing for easy separation and recycling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If furniture is made of multiple different materials to achieve desired functionality and aesthetics, then the furniture can meet diverse requirements, but the furniture becomes difficult to recycle and dispose of

Engineering Contradiction:

Improvefunctional and aesthetic requirementsVSAvoidrecycling and disposal

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The furniture is designed as separate modular components that can be easily separated. Each component can be made from different materials optimized for its specific function, yet the segmentation allows each material to be independently recycled or disposed of, resolving the contradiction between versatility and recyclability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Components are nested within one another during the 3D printing process, with inner components being printed first and outer components encapsulating them. This nesting approach allows multiple materials to be combined for functional versatility while maintaining clear boundaries that facilitate easy separation and recycling.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Strength

If furniture components are joined using adhesives and fasteners to achieve strong connections, then the structural strength is improved, but the disassembly process becomes time-consuming and expensive

Engineering Contradiction:

Improvestructural connection strengthVSAvoiddisassembly time

Core Design Contradiction:

StrengthVSLoss of time

Solution Approach 1:

The joining function is merged into the 3D printing process itself. Outer components are printed while encapsulating inner components, creating integrated joints as part of the monolithic printing process. This eliminates the need for separate adhesives or fasteners, providing strong structural connections that are easy to separate by simply breaking the encapsulating material.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Traditional mechanical joining systems (screws, bolts, adhesives) are replaced with a 3D printing-based encapsulation system. The outer component acts as a integrated joint that mechanically holds inner components through the printing process, providing equivalent or superior strength without requiring disassembly tools or complex separation procedures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If traditional manufacturing methods are used to create multi-material furniture, then production experience is established, but furniture waste increases and recycling becomes problematic

Engineering Contradiction:

Improvemanufacturing processVSAvoidfurniture waste

Core Design Contradiction:

Ease of manufactureVSLoss of substance

Solution Approach 1:

The manufacturing approach transitions from traditional subtractive or assembly-based methods to additive 3D printing. This parameter change in the manufacturing process enables precise material placement, reduces excess material waste, and creates components with optimized material usage. The digital fabrication process also facilitates easier recycling through the segmentation and nesting principles.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The design facilitates selective discarding and recovering of materials. Since components are segmented and nested with clear boundaries, specific materials can be selectively removed or recovered based on their lifecycle end conditions. This enables targeted recycling of valuable materials while efficiently disposing of non-recyclable components, reducing overall furniture waste.

Inventive Principle:

Principle #34Discarding and recovering

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates easy disassembly and recycling of furniture components by eliminating the need for adhesives and fasteners, promoting sustainable furniture production.

Implementation Method 1

depositing at least one first layer of molten material on a print surface to form a first side of a second furniture component

Methodology Applied

Scientific EffectMelting and solidification: Melting

Implementation Method 2

cooling the at least one first layer of molten material, the at least one second layer of molten material, and the at least one third layer of molten material to cause the at least one first layer of molten material, the at least one second layer of molten material, and the at least one third layer of molten material to solidify

Methodology Applied

Scientific EffectCooling and solidification: Freezing

Data Source

PatentUS20250269583A13D printed furniture with captured components and method of making the same

Publication Date: 2025.08.28 HADDY INC

AI summary

A three-dimensional (3D) printed multi-component structure includes a first component and a second component. The second component is formed to define a cavity that extends into the second component. The first component is located in the cavity of the second component to at least partially embed the first component in the second component.