T-Tape Configuration for Raft Tube Positioning
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Solution Overview
Problem
The existing manufacturing methods for rafts, which rely on contact cement for securing raft tubes and floors, are time-consuming due to the lengthy drying time of the adhesive, extending the manufacturing time significantly.
Innovation Solution
The use of a T-tape configuration, which involves folding and bonding tape portions to form a flange feature that can be secured to substrates using welding or adhesives, allowing for rapid securement of raft tubes and floors without the need for contact cement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If contact cement is used to secure raft tubes and floors, then strong bonding is achieved, but manufacturing time is significantly extended due to lengthy drying time
Solution Approach 1:
The patent removes the drying time constraint by extracting the problematic contact cement application process and replacing it with mechanical fastening systems (clamps, vises, or other securing devices) that provide immediate bonding without requiring adhesive drying time. This allows the raft assembly to proceed to the next manufacturing step immediately after mechanical fastening is applied.
Solution Approach 2:
The patent applies preliminary action by pre-positioning and mechanically securing the raft tubes and floors in their final positions using clamps or vises before any adhesive is applied. This preliminary mechanical fastening establishes the correct geometry and alignment, allowing subsequent adhesive application to occur without time constraints for drying before the next step.
2Reliability
If contact cement is used for securement, then reliable bonding is achieved, but production efficiency is reduced due to extended drying periods
Solution Approach 1:
The patent introduces an intermediary mechanical fastening system (clamps, vises, or securing devices) that acts as a mediator between the raft components and the final bonded structure. This intermediary provides temporary but reliable holding force during assembly, enabling production to continue without waiting for adhesive drying while ensuring proper alignment and positioning for subsequent bonding operations.
3Strength
If traditional adhesive methods are used, then securement strength is maintained, but manufacturing cycle time increases to many days
Solution Approach 1:
The patent replaces the chemical bonding mechanism (adhesive drying) with a mechanical fastening system that provides immediate securement strength. Clamps, vises, or other mechanical securing devices are applied to the raft tubes and floors, providing the necessary holding force without requiring the extended drying time associated with contact cement, thereby reducing the manufacturing cycle from many days to a much shorter duration.
Data Source
AI summary
Embodiments generally to raft assembly components and methods. Specific aspects provide a tape configuration that can assist positioning of raft tubes with respect to one another, as well as positioning a life raft floor with respect to one or more of the raft tubes. The tape configuration may have a base and an extending T-shaped flange.