Odor Neutralizing Composition for Recycled Plastics
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Solution Overview
Problem
Plastic products often emit unpleasant odors due to residual low-molecular substances and additives, which can be exacerbated by the use of recycled materials, posing challenges for plastic processors seeking to meet strict emission standards and improve consumer acceptance.
Innovation Solution
A composition comprising plastics combined with an odor neutralizer made of calcium silicate hydrate, preferably with a specific surface area of at least 20 m2/g and a C/S ratio between 0.6 and 1.4, optionally including polysaccharides and adhesion promoters, to effectively reduce odor emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If recycled plastics are used as starting material, then productivity and resource efficiency are improved, but odor emissions increase due to residual odorants and metabolic products from post-consumer waste
Solution Approach 1:
The patent introduces an odor-neutralizing agent as an intermediary substance that chemically binds with odor-causing compounds (low-molecular substances, metabolic products) in recycled plastics. This mediator converts harmful odorants into non-odorous complexes, allowing the use of recycled materials without the unpleasant odor side effect.
Solution Approach 2:
The patent modifies the chemical composition parameters of the plastic material by adding specific odor-neutralizing agents. This changes the chemical environment within the plastic matrix, enabling it to trap and neutralize odor molecules while maintaining the physical recycling process.
2Ease of manufacture
If conventional plastic materials are used, then manufacturing simplicity is maintained, but odor emissions occur due to residual low-molecular substances and additives
Solution Approach 1:
The odor-neutralizing agent serves as a mediator that is easily incorporated into conventional plastic processing workflows. It mixes with the plastic material during standard manufacturing processes and actively neutralizes odor compounds without requiring changes to existing manufacturing equipment or procedures.
3Object-generated harmful factors
If odor-neutralizing additives are added to plastic materials, then odor emissions are reduced, but device complexity and formulation complexity increase
Solution Approach 1:
The patent optimizes the formulation by carefully selecting specific parameters for the odor-neutralizing agent, such as particle size (0.1-10 micrometers) and concentration (0.1-10 wt%). These parameter specifications create a standardized, manageable formulation process that reduces complexity while maintaining effectiveness.
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 composition significantly reduces odor emissions in plastic materials, as demonstrated by odor tests, while maintaining mechanical and thermal properties, making it suitable for various plastic types, including recycled plastics.
Implementation Method 1
an odor neutralizer comprising calcium silicate hydrate
Data Source
AI summary
The invention relates to a composition comprising a) plastic material and other substances, b) odour neutraliser comprising calcium silicate hydrate, c) polysaccharide, d) adhesion promoter.