Golf Club Head Double-Stick Tape Bubble-Free Resin Layer
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Solution Overview
Problem
Conventional golf club head double-stick tapes face issues with adhesion failure and separation due to shearing forces during repeated impacts, particularly when using resin form layers, and wrinkles when using tapes without resin form layers.
Innovation Solution
A golf club head design incorporating a double-stick tape with a fiber layer and/or a resin layer free of bubbles, featuring a five-layered structure with adhesive layers on either side and an intermediate nonwoven fabric or resin layer to enhance adhesion and durability, reducing shear deformation and adhesion failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a double-stick tape with a resin form layer is used, then adhesion to curved surfaces and uneven surfaces is improved, but the tape is prone to separation under repeated impact forces
Solution Approach 1:
The patent applies a composite material structure consisting of multiple layers: a base material layer, a resin layer free of bubbles, and adhesive layers. This composite structure combines the flexibility needed for curved surface adhesion with the strength required to resist separation under impact forces.
Solution Approach 2:
The patent changes the physical state of the resin layer by eliminating bubbles, transforming it from a foamed structure to a dense, bubble-free structure. This parameter change enhances the tape's resistance to shear deformation and separation while maintaining adhesion properties.
2Reliability
If a double-stick tape without a resin form layer is used, then resistance to shear deformation is improved, but wrinkles are apt to be generated
Solution Approach 1:
The patent introduces a resin layer free of bubbles as an intermediate layer between the base material and adhesive layers. This structural modification changes the mechanical properties of the tape, providing resistance to shear deformation while preventing wrinkle formation during application.
3Strength
If the adhesive layers are made thick, then adhesion strength is improved, but the tape becomes more prone to destruction under impact
Solution Approach 1:
The patent creates a multi-layer composite structure where thin adhesive layers are combined with a resilient base material layer and a bubble-free resin layer. This composite design distributes impact forces across multiple layers, preventing destruction while maintaining strong adhesion through the coordinated action of all layers.
Solution Approach 2:
The patent divides the tape into multiple functional layers: base material layer, resin layer free of bubbles, and adhesive layers. Each layer performs a specific function, and the segmentation allows the structure to flex and absorb impact forces without compromising adhesion 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 solution effectively enhances the bonding strength and durability of the double-stick tape, reducing the likelihood of separation and adhesion failure, while maintaining vibration absorption capabilities, thus improving the overall performance and longevity of the golf club head.
Implementation Method 1
The double-stick tape includes a first adhesive layer provided as an innermost layer, a second adhesive layer provided as an outermost layer
Implementation Method 2
The adherend can absorb the vibration generated in hitting the ball
Data Source
AI summary
A head of a first aspect is provided with a head body h1x, a double-stick tape t1, and an adherend s1x bonded to the head body h1x by the double-stick tape t1. The double-stick tape t1 has a first adhesive layer 30 provided as an innermost layer, a second adhesive layer 36 provided as an outermost layer, and intermediate layers 32 and 34 provided between the first adhesive layer 30 and the second adhesive layer 36. The intermediate layer includes a fiber layer 34 and/or a resin layer 32. The resin layer 32 is free of bubbles. In a head of a second aspect, a head body h1y or an adherend s1y has a recessed part 27y. In a head of a third aspect, an adherend s1 has a metal member 27 and an elastic member 29. The elastic member 29 has a peripheral part 29a directly or indirectly abutting on a side surface 31 of the metal member 27.