Corrugated Envelope Template with Curved Creases

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Solution Overview

Problem

Current packaging envelopes, often made of paper or plastic, fail to provide adequate protection for items of varying sizes and shapes, and plastic-based options are non-sustainable and environmentally unfriendly.

Innovation Solution

A foldable template for forming envelopes with specific creases and panels, made from materials like corrugated paperboard, which allows for flexible packaging and can be easily converted into an envelope shape, providing protection and sustainability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If envelopes are made of paper materials, then they are environmentally friendly, but they do not provide sufficient protection for items

Engineering Contradiction:
Improveprotection levelVSAvoidenvironmental sustainability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The envelope is constructed from corrugated paperboard, a composite material consisting of multiple layers including fluted intermediate layers and flat liner layers. This composite structure provides enhanced protection through the air pockets in the fluted layers while maintaining environmental sustainability as all components are paper-based and recyclable, eliminating the need for plastic materials.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The envelope incorporates curved creases instead of straight folds, creating a more resilient three-dimensional structure. The curved geometry distributes stress more effectively and provides better cushioning protection for contents while maintaining the paper-based eco-friendly material composition.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Object-affected harmful factors

If envelopes are made stiff to provide protection, then protection is improved, but they cannot accommodate items with various sizes and shapes

Engineering Contradiction:
Improveprotection levelVSAvoidsize accommodation flexibility
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The envelope is divided into multiple panels including front panels, back panels, side panels, and flaps, connected by creases and folds. This segmentation allows each panel to move independently, enabling the envelope to expand and contract to accommodate items of various sizes and shapes while maintaining protective structural integrity through the corrugated material.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The envelope incorporates dynamic elements such as expandable side panels, movable flaps, and flexible creases that allow the structure to adapt its shape and volume. The curved creases provide controlled flexibility, enabling the envelope to conform to different item geometries while the corrugated material maintains sufficient rigidity for protection.

Inventive Principle:
Principle #15Dynamics

3Strength

If envelopes are made of plastic materials, then durability is improved, but they are non-sustainable and non-environmentally friendly

Engineering Contradiction:
ImprovedurabilityVSAvoidenvironmental sustainability
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The envelope utilizes corrugated paperboard as a natural composite material with fluted and liner layers providing structural strength comparable to plastic. The multi-layer construction with air pockets in the fluted sections delivers durability and protection while remaining fully biodegradable and recyclable, eliminating environmental harm associated with plastic materials.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The invention changes the material parameter from synthetic plastic to natural paper-based corrugated board, fundamentally altering the environmental properties while maintaining or improving mechanical strength through the engineered corrugated structure and curved crease design.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12252298B2Envelope and template for forming same
Publication Date: 2025.03.18 PACKSIZE LLC
  • US12252298B2 patent drawing
  • US12252298B2 patent drawing
  • US12252298B2 patent drawing

AI summary

A foldable template for forming an envelope includes a central panel, a top glue flap, a bottom glue flap, a first intermediate panel, a second intermediate panel, a first back panel, and a second back panel. The first intermediate panel extends from a first side of the central panel and is separated therefrom by a first curved crease. The second intermediate panel extends from a second side of the central panel and is separated therefrom by a second curved crease. The first back panel extends from the first intermediate panel and is separated therefrom by a third curved crease. The second back panel extends from the second intermediate panel and is separated therefrom by a fourth curved crease.