Induction Roofing Fastener Structure Without Pre-Drilling
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Solution Overview
Problem
Existing roofing fasteners require pre-drilling through structural layers, which is time-consuming and costly, and lack adhesive bonding surfaces for induction welding, posing challenges in securing single-ply roofing membranes effectively, especially in high wind conditions.
Innovation Solution
The induction roofing fastener system includes an anchor plate with a raised bonding surface and adhesive layer, a staple with free ends, and a hollow shank with heat sink orifices, allowing for secure attachment to a substructure without pre-drilling, using heat to bond the single-ply membrane to the anchor plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing roofing fasteners are used, then mechanical fastening is achieved, but pre-drilling through structural layers is required which is time-consuming and costly
Solution Approach 1:
The invention extracts the drilling operation from the fastening process by using a fastener that expands within pre-formed holes in the insulation layer, eliminating the need to drill through the structural deck. This separation of functions allows the fastener to achieve secure anchoring without requiring time-consuming pre-drilling through structural layers.
Solution Approach 2:
The fastener incorporates an expandable mechanism that is preliminarily configured within the insulation layer holes. When installed, the fastener expands to engage both the insulation layer and structural deck simultaneously, achieving secure fastening without requiring subsequent drilling operations through the structural deck.
2Reliability
If existing roofing fasteners are used, then mechanical fastening is achieved, but adhesive bonding surfaces for induction welding are not provided
Solution Approach 1:
The invention merges multiple functions into a single fastener component: mechanical anchoring through expansion in the insulation layer, structural fastening through engagement with the structural deck, and adhesive bonding through the integrated bonding surface. This consolidation eliminates the need for separate adhesive applications or welding operations while maintaining fastening reliability.
Solution Approach 2:
The fastener is designed as a multi-functional component that performs mechanical anchoring, structural fastening, and provides an adhesive bonding surface for induction welding. This universal design allows the same fastener to achieve multiple fastening objectives without requiring additional components or operations.
3Strength
If single-ply roofing membranes are secured using existing methods, then attachment is achieved, but ballasting or mechanical fastening requires additional materials and complexity
Solution Approach 1:
The invention extracts the ballasting function from the roofing system by providing integrated adhesive bonding surfaces on the fastener that directly bond the single-ply membrane to the fastener assembly. This eliminates the need for separate ballast materials while maintaining the retention strength required for high wind conditions.
Solution Approach 2:
The invention merges the anchoring and bonding functions into a single integrated system. The fastener expands to anchor in the insulation layer, engages the structural deck for mechanical strength, and provides adhesive bonding surfaces for direct membrane attachment, eliminating the need for separate ballast or additional fastening 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 solution enables rapid, secure, and cost-effective installation of single-ply roofing membranes, reducing the risk of fastener back-out and damage from high winds, while eliminating the need for pre-drilling and ballasting, thus enhancing roofing material retention and safety.
Implementation Method 1
an adhesive layer atop the bonding surface
Implementation Method 2
a plurality of heat sink orifices are provided along the bonding surface
Implementation Method 3
applying heat to a portion of the single-ply roofing layer directly covering the anchor plate; and allowing heat to dissipate from the heat sink orifices to bond the single-ply roofing layer and anchor plate together
Implementation Method 4
a staple having two or more free ends oriented in a same direction; and a hollow shank contacting, and extending perpendicularly away from, the anchor plate and having one or more openings along a free end, wherein a plurality of heat sink orifices are provided along the bonding surface, wherein the staple is insertable within a hollow portion of the hollow shank and the two or more free ends of the staple are extendable through the one or more openings along the free end of the hollow shank
Data Source
AI summary
A roofing fastener has an anchor plate, a staple, and a hollow shank extending perpendicularly away from the anchor plate. The staple is insertable within the hollow shank, and one or more free ends of the staple is extendable from an opening in a free end of the hollow shank. The anchor plate has a raised bonding surface with adhesive and heat sinks dispersed thereabout. The anchor plate and hollow shank may be separable or a single connected structure. In operation, the roofing fastener is inserted within a substructure about the hollow shank, such that the anchor plate rests atop an upper surface of the substructure. The staple is then depressed within the hollow shank such that one or more free ends of the staple penetrate the substructure at an angle relative to the hollow shank. A single-ply membrane is welded to the anchor plate via the adhesive.