Thermoformable Foam Furniture Coating Process
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Solution Overview
Problem
The existing methods for creating furniture coatings with three-dimensional surface shapes are time-consuming and costly due to the need for manual or specialized sewing of leather over padding, limiting mass production and increasing production costs.
Innovation Solution
A process using thermoformable plastic foam with a cling layer and finish layer, where the foam is heated and molded to create three-dimensional shapes without seams, allowing for mass production by changing the die shape, and enabling the finish layer to be glued onto the foam, reducing production time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If leather is sewn on padding by hand or machine to create three-dimensional surface shapes, then the aesthetic effect is achieved, but the production time increases and production costs become high
Solution Approach 1:
The patent replaces the mechanical sewing process with a thermal bonding process. A thermoplastic coating is applied to the padding and then heated to melt and bond the coating, creating the three-dimensional surface shape through thermal and mechanical pressure rather than needle and thread. This substitution eliminates the need for skilled artisans and specialized sewing machinery.
Solution Approach 2:
The patent changes the physical state of the coating material by heating it from solid to molten state and then back to solid upon cooling. This phase change allows the coating to be molded into three-dimensional shapes during the heating phase and then maintain those shapes upon cooling, enabling automated production of complex surface geometries without manual intervention.
2Shape
If leather is sewn on padding by hand or machine to create three-dimensional surface shapes, then the aesthetic effect is achieved, but the production costs become high
Solution Approach 1:
The patent replaces the mechanical sewing process with a thermal bonding process. A thermoplastic coating is applied to the padding and then heated to melt and bond the coating, creating the three-dimensional surface shape through thermal and mechanical pressure rather than needle and thread. This substitution eliminates the need for skilled artisans and specialized sewing machinery.
Solution Approach 2:
The patent changes the physical state of the coating material by heating it from solid to molten state and then back to solid upon cooling. This phase change allows the coating to be molded into three-dimensional shapes during the heating phase and then maintain those shapes upon cooling, enabling automated production of complex surface geometries without manual intervention.
3Shape
If traditional sewing methods are used to create furniture coverings, then the desired ornamental effects are achieved, but the production time is long
Solution Approach 1:
The patent replaces the mechanical sewing process with a thermal bonding process. A thermoplastic coating is applied to the padding and then heated to melt and bond the coating, creating the three-dimensional surface shape through thermal and mechanical pressure rather than needle and thread. This substitution eliminates the need for skilled artisans and specialized sewing machinery.
Solution Approach 2:
The patent applies the thermoplastic coating to the padding in advance before the final shaping operation. The coating is then heated and molded in a single step to create the three-dimensional ornamental shapes, eliminating the need for subsequent sewing or assembly operations that would otherwise be required to attach separate leather pieces.
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 process allows for the efficient and cost-effective mass production of furniture coatings with desired aesthetic effects, eliminating the need for seams and enabling quick changes in design by altering the die, thereby reducing production time and costs significantly.
Implementation Method 1
a thermoplastic coating is applied to a padding and thereafter heating and molding the coating under compression
Implementation Method 2
heating and molding the coating under compression so as to bond the coating
Implementation Method 3
molding the coating under compression so as to bond the coating and obtain a permanent set
Implementation Method 4
removing the coating from the mold and cooling the coated padding
Data Source
Figure 1~3
Figure 4~6
Figure 7
AI summary
A process for making a coating for furniture, comprises the steps of providing a layer of thermoformable plastic foam (3), coupling, through heating and pressing, a cling layer (8) to a first face (4) of the layer of thermoformable plastic foam (3), forming depressions (5) and corresponding elevations (6) on the first face (4) by thermoforming, gluing a finish layer (9) on the cling layer (8). The finish layer (9) copies the shape of said depressions (5) and elevations (6).