Vegetable Oil Polyol Bonded Foam Underlayment
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Solution Overview
Problem
The manufacturing of bonded foam underlayment faces challenges in reducing production costs and volatile organic compound (VOC) emissions, which are regulated and impact environmental sustainability and consumer preferences.
Innovation Solution
The use of vegetable oil polyol, particularly castor oil polyol, in the pre-polymer formulation for bonded foam products, which reduces VOC emissions and lowers production costs while enhancing the quality and properties of the underlayment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If traditional petrochemical polyol is used in pre-polymer formulation, then manufacturing cost is higher, but VOC emissions are not reduced
Solution Approach 1:
The patent changes the chemical composition parameter of the polyol from petrochemical-based to vegetable oil-based (specifically castor oil polyol). This parameter change simultaneously reduces VOC emissions during the curing process and lowers manufacturing costs, as vegetable oil polyols are both environmentally friendlier and less expensive than traditional petrochemical polyols.
Solution Approach 2:
The patent employs castor oil polyol, a renewable and relatively inexpensive material derived from vegetable oils, to replace expensive petrochemical polyols. This substitution reduces both the cost of raw materials and the environmental impact, aligning with the principle of using cheaper, more sustainable materials.
2Object-generated harmful factors
If vegetable oil polyol is used in pre-polymer formulation, then VOC emissions are reduced and cost is lowered, but tensile strength and elongation properties need to be maintained
Solution Approach 1:
The patent optimizes the chemical parameters of the castor oil polyol, including its hydroxyl number and molecular weight, to ensure that the resulting bonded foam achieves the required tensile strength and elongation properties. By carefully controlling these parameters, the patent maintains mechanical performance while using the environmentally friendly vegetable oil-based polyol.
Solution Approach 2:
The patent creates a composite pre-polymer system by combining castor oil polyol with isocyanate and other additives. This composite formulation ensures that the final bonded foam product achieves the necessary mechanical properties (tensile strength and elongation) while benefiting from the low VOC emissions and cost advantages of vegetable oil-based 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
This approach results in a lower-cost, higher-quality bonded foam underlayment with improved tensile strength, elongation, and reduced VOC emissions, making it more environmentally friendly and appealing to consumers.
Implementation Method 1
mixing and curing a pre-polymer comprised of isocyanate and polyol
Implementation Method 2
the degree of off-gassing resulting from the reaction of water and isocyanate, which influences the degree of cell expansion
Implementation Method 3
Moisture, usually steam, is then added to the foam log to cure the pre-polymer
Data Source
AI summary
A bonded foam product manufactured with a vegetable oil polyol is herein disclosed. The pre-polymer for use as a binder in the manufacture of a bonded foam product comprises an isocyanate and a vegetable oil polyol, wherein the pre-polymer is substantially free of any petrochemical polyol. In another aspect, the invention is method for making a bonded foam product, the method comprising coating a plurality of foam pieces with a pre-polymer, the pre-polymer comprising an isocyanate and a vegetable oil polyol, wherein the pre-polymer is substantially free of any petrochemical polyol, compressing the foam pieces into a foam log of a desired density, and steaming the foam log to cure the pre-polymer. If desired, a process oil may be added to the pre-polymer to modify the viscosity of the pre-polymer.