Parylene Coating for Consumer Products
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Consumer products, particularly adult novelty items, contain hazardous and toxic materials that can cause health hazards and are difficult to clean, leading to bacterial growth and degradation, especially when they come into contact with mucous membranes.
Innovation Solution
Coating these products with a transparent thin film of parylene, which is chemically inert and resistant to solvents, acids, and alkaline chemistry, to encapsulate harmful chemicals, prevent degradation, reduce friction, and create a non-porous surface for easier cleaning and sanitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If common plastic materials (ABS, PVC, PS, etc.) are used in consumer products, then manufacturing cost and ease of manufacture are improved, but toxic chemical residues and health hazards are introduced
Solution Approach 1:
A parylene coating layer is applied as an intermediary between the plastic substrate and the user's body. This coating acts as a barrier that prevents toxic chemicals from the plastic materials (ABS, PVC, PS, etc.) from leaching into contact with mucous membranes, while allowing the underlying plastic to retain its manufacturing advantages.
Solution Approach 2:
The invention creates a composite structure combining the plastic substrate (for ease of manufacture) with a parylene coating layer (for safety). This composite material approach allows the product to benefit from both the manufacturing advantages of common plastics and the safety advantages of the biocompatible parylene coating.
2Ease of manufacture
If porous materials are used in consumer products, then ease of manufacture and material properties are improved, but cleaning difficulty and bacterial growth increase
Solution Approach 1:
The parylene coating serves as an intermediary layer that creates a non-porous surface over the porous substrate. This coating barrier prevents bacteria from penetrating into the porous material while maintaining the manufacturing advantages of the underlying porous structure.
Solution Approach 2:
A thin film of parylene is applied to the surface of the porous material, creating a flexible protective shell that prevents bacterial growth and facilitates cleaning, while allowing the underlying porous material to retain its structural and manufacturing advantages.
3Adaptability or versatility
If incompatible substances (lubricants, cleaning agents) are added to consumer products, then functionality and user experience are improved, but degradation and chemical shedding increase
Solution Approach 1:
The parylene coating acts as a protective intermediary between incompatible substances (lubricants, cleaning agents) and the plastic substrate. This barrier prevents direct chemical interaction that would cause degradation, while still allowing the product to function with various lubricants and cleaning agents.
Solution Approach 2:
The chemical incompatibility problem is solved by replacing the direct contact mechanism with a physical barrier (parylene coating). This substitution prevents chemical reactions between incompatible substances and the substrate, maintaining product stability while preserving functionality.
4Ease of manufacture
If high-friction materials are used in consumer products, then material availability and cost are improved, but lubrication requirements and degradation increase
Solution Approach 1:
A thin film of parylene is applied to the high-friction material surface, creating a low-friction coating that reduces wear and degradation while allowing the underlying material to retain its manufacturing advantages and availability.
Solution Approach 2:
The invention creates a composite structure combining the readily available high-friction material with a low-friction parylene coating. This composite approach reduces friction-induced degradation while maintaining the benefits of common, easily manufactured materials.
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
The parylene coating effectively prevents chemical leaching, reduces bacterial growth, extends product lifespan, and decreases the need for artificial lubrication, enhancing safety and hygiene by providing a durable, easy-to-clean surface.
Implementation Method 1
the thin film of parylene encapsulates harmful chemicals common in non-medical consumer products
Implementation Method 2
provides a non-porous surface for the non-medical consumer products, thereby preventing bacterial growth
Implementation Method 3
Parylene is also a dry lubricity material that has a low coefficient of friction—five times less friction than silicone and 3 times less friction than glass
Data Source
AI summary
Disclosed are non-medical consumer products including a substrate that is coated with a layer of parylene. Particularly, the non-medical consumer products can include novelty items, such as adult novelty items, and children's products, such as pacifiers or toys. The layer of parylene extends lifetime of the non-medical consumer products and prevents bacterial growth thereon whilst also providing a protective barrier for a user of the non-medical consumer products, preventing adverse effects thereto from bioincompatible materials and toxic chemicals. A method of coating such items with parylene is also disclosed.