Cardboard Disposable Razor with Modular Blade Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing disposable razors made of plastic material pose environmental concerns due to non-renewable resources and difficulty in separate disposal, and existing cardboard razors lack structural reliability and stability.
Innovation Solution
A disposable razor made entirely of cardboard with a modular design, featuring a handle and blade-holding head coupled by a stable prismatic connection, allowing for easy disassembly and separate recycling of cardboard and metal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disposable razors are made of plastic material, then structural strength and reliability are improved, but environmental sustainability deteriorates due to non-renewable resources and difficulty in separate disposal
Solution Approach 1:
The patent changes the material parameter from plastic to cardboard, transforming the razor from a non-recyclable plastic product to a fully recyclable paper product that can be disposed of in paper recycling bins, thereby resolving the environmental sustainability issue while maintaining structural integrity through proper cardboard design
Solution Approach 2:
The razor is designed with a modular structure where the blade can be easily separated from the cardboard handle, allowing users to dispose of the cardboard portion in paper recycling bins and the metal blade separately, thus resolving the disposal difficulty associated with integrated plastic razors
2Object-affected harmful factors
If disposable razors are made entirely of cardboard, then environmental sustainability is improved, but structural strength and reliability deteriorate
Solution Approach 1:
The patent employs composite construction by combining cardboard with metal blades, where the cardboard serves as the handle and housing structure while metal blades provide the necessary cutting edge strength, achieving both environmental sustainability and structural reliability
Solution Approach 2:
The razor is designed with a modular structure where the blade can be easily separated from the cardboard handle, allowing users to dispose of the cardboard portion in paper recycling bins and the metal blade separately, thus resolving the disposal difficulty associated with integrated plastic razors
3Ease of manufacture
If cardboard razors are designed with simple folding structures, then ease of manufacture is improved, but structural stability during use deteriorates
Solution Approach 1:
The cardboard components are pre-cut and pre-folded during manufacturing to form stable three-dimensional structures with reinforced joints, ensuring that when users assemble the razor at home, the structure is already optimized for stability and can withstand shaving forces without collapsing
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
A disposable shaving razor comprises: a blade-holding head (20) comprising a front wall (21), a longitudinal seat (S) open posteriorly to the front wall, and at least one housing (M1) open anteriorly to the front wall, a handle (10) comprising a handle grip (11), an arm (12) and an appendage (13) coupled inside the longitudinal seat (S) of the blade-holding head in anti-rotational prismatic coupling mode; at least one blade (30) suitable for being housed in the seat (S1) of the blade-holding head in such a way that a cutting edge (30a) of the blade projects anteriorly from the front wall (21) of the blade-holding head, and fixing means (M2) fixing the blade (30) into said housing (M1) of the blade-holding head; wherein said handle (10) is entirely made of cardboard, and said blade-holding head (20) is entirely made of cardboard.