Masking Shield with Tether for Sealant Overspray Control
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Solution Overview
Problem
Current methods for preventing overspray of sealant onto finished surfaces during traffic surface treatment are labor-intensive, time-consuming, and costly, requiring extensive material usage and manual labor to shield surfaces from sealant application.
Innovation Solution
A masking shield with a frame, a thin flexible liner, and a runner is used to shield surfaces during traffic surface treatment. The shield includes a tether that couples the spray wand to the frame, allowing the spray nozzle to move freely within a defined area while preventing overspray onto adjacent surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cardboard or plywood sheets are used to cover finished surfaces before sealant application, then overspray prevention is achieved, but labor time and material disposal requirements increase significantly
Solution Approach 1:
The patent uses a flexible plastic sheeting material instead of rigid cardboard or plywood to create a removable barrier that prevents overspray while allowing for easier installation and removal, reducing labor time associated with covering and uncovering surfaces
Solution Approach 2:
The spray shield is pre-assembled with the flexible material attached to a frame structure, allowing it to be quickly deployed before spraying begins without requiring on-site assembly or complex securing mechanisms
2Object-affected harmful factors
If cardboard or plywood sheets are used to cover finished surfaces, then overspray prevention is achieved, but material transportation and disposal requirements increase
Solution Approach 1:
The flexible plastic sheeting is lightweight and can be rolled up for compact storage and transportation, reducing the material handling burden compared to bulky cardboard or plywood sheets that must be transported and disposed of after each use
Solution Approach 2:
The spray shield with flexible material is designed to be reusable across multiple jobsites, eliminating the need to transport and dispose of single-use cardboard or plywood materials after each application
3Object-affected harmful factors
If hand application of sealant border is used instead of mechanical sprayer, then overspray onto perimeter curbs is eliminated, but coating process speed decreases significantly
Solution Approach 1:
The spray shield acts as an intermediary barrier between the mechanical sprayer and the perimeter curb, allowing the high-speed mechanical spraying process to continue while physically blocking overspray from reaching the curb, thus maintaining productivity without sacrificing overspray prevention
4Productivity
If mechanical sprayer is used for sealant application, then coating efficiency is improved, but risk of overspray onto adjacent surfaces increases
Solution Approach 1:
The spray shield serves as a physical intermediary barrier positioned between the mechanical sprayer and adjacent surfaces, allowing the efficient mechanical spraying process to continue at high speed while the shield intercepts and blocks overspray particles from reaching perimeter curbs and other protected surfaces
Data Source
AI summary
A masking shield for shielding a surface during a traffic surface treatment process during which a mechanical sprayer having a spray wand is used to spray a protective sealant on the traffic surface, the masking shield having a frame with a generally rectangular shape and having a first side and a second side. The masking shield further having a thin, flexible liner in the form of a sleeve, the sleeve configured to completely receive the frame, and a runner removably coupled to a bottom edge of the frame.