Insulation Panel Edge Compression for Stronger Seam Attachment
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Solution Overview
Problem
Existing methods for connecting insulation panels, particularly those made of multi-layer cellulosic or textile fibers, face challenges such as material damage, unsightly seams, and reduced productivity due to the need for slower sewing speeds and increased pressure, which results in weak connections and gaps.
Innovation Solution
A method involving heating and compressing the edge portions of insulation panels to a temperature of 150° F. to 450° F. and a pressure of at least 5 psig, followed by fastening with sewing, adhesives, or other methods, to create a strong, cohesive bond.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sewing apparatus is used to connect insulation panels, then connection is achieved, but material damage occurs due to puncturing and tearing from needles and increased pressure
Solution Approach 1:
The patent applies preliminary action by heating and compressing the insulation panels before sewing. This pre-treatment modifies the material properties to make them more suitable for subsequent sewing operations, reducing damage during the connection process while maintaining connection strength.
Solution Approach 2:
The patent changes physical parameters of the insulation material by applying heat (raising temperature) and compression (increasing density). These parameter changes transform the lofty, low-density material into a more compact form that resists needle puncturing and tearing while still allowing successful sewing connection.
2Strength
If increased pressure is applied during sewing to compress materials, then connection is achieved, but material damage increases due to excess puncturing and tearing
Solution Approach 1:
The patent applies preliminary compression through heating and pressing before sewing. This pre-compression achieves the necessary material density for strong connections without requiring excessive pressure during the sewing operation itself, thereby reducing needle-induced damage.
Solution Approach 2:
The patent changes the density and compressibility parameters of the insulation material through pre-heating and pre-compression. This allows the material to maintain sufficient compression for strong connections during sewing without requiring high instantaneous pressure that would cause damage.
3Object-affected harmful factors
If slower sewing speeds are used to reduce damage, then material damage decreases, but productivity is reduced
Solution Approach 1:
The patent applies preliminary heating and compression to prepare the material for faster sewing operations. This pre-treatment allows the material to withstand higher sewing speeds without damage, thereby increasing productivity while maintaining material integrity.
Solution Approach 2:
The patent changes the physical parameters (temperature, density) of the insulation material through pre-heating and pre-compression. These parameter modifications enable the material to tolerate faster needle penetration speeds, allowing increased sewing speed and productivity without proportionally increasing damage.
4Temperature
If thicker insulation panels are connected, then insulation performance is improved, but connection difficulty increases due to resistance to penetration and maneuvering
Solution Approach 1:
The patent applies heat and compression to change the physical parameters of thick insulation panels. This pre-treatment reduces the resistance to needle penetration and improves maneuverability during sewing, making thick panels (which provide better insulation) easier to connect despite their initial resistance.
Solution Approach 2:
The patent applies preliminary heating and compression to thick insulation panels before sewing. This pre-treatment softens and compactes the thick material, reducing its resistance to needle penetration and making subsequent connection operations easier and more successful.
5Strength
If sewing is used to connect panels, then connection is achieved, but unsightly valley indents are created on the material surface
Solution Approach 1:
The patent applies heat and compression to change the physical parameters of the insulation material at the connection area. This pre-treatment creates a more uniform, compressed surface that reduces the formation of unsightly valley indents during sewing, improving the aesthetic appearance while maintaining connection strength.
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 method results in a durable, aesthetically pleasing connection with increased shear strength and reduced thickness, allowing for higher productivity without material damage.
Implementation Method 1
relaxing the fibers of cellulosic material in the edge portion of each insulation panel by applying heat to the edge portion at a temperature of 150° F. to 450° F., thereby forming a relaxed fiber edge portion
Implementation Method 2
compressing the relaxed fiber edge portion of each panel at a pressure of at least 5 psig, thereby forming a compressed panel portion having a thickness and a density
Data Source
AI summary
A method for connecting insulation panels, each of the panels comprising a cellulosic web having two sides and an outside edge, and comprising layers of cellulosic fibers, the method comprising:arranging a portion of each panel to be adjacent to the other, thereby forming an edge portion where the two webs can be connected;relaxing the fibers of cellulosic material in the edge portion of each insulation panel by applying heat to the edge portion at a temperature of 150° F. to 450° F., thereby forming a relaxed fiber edge portion;compressing the relaxed fiber edge portion of each insulation panel at a pressure of at least 5 psig, thereby forming a compressed panel portion having a thickness and a density; andfastening the compressed panel portions together using sewing, riveting, adhesive, tape, interlacing, stamping, ply bonding or stapling thereby forming a fastened area,wherein step (c) can be conducted at the same time or following step (b).