Industrial Roll Adhesive Layering for Stronger Core-Cover Bonding
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Solution Overview
Problem
Conventional industrial rolls in the papermaking industry face challenges with low adhesive strength between the core and cover members, leading to increased manufacturing costs and limited reuse due to the need for a base layer, which restricts the thickness of the cover member and thus the number of surface grinding cycles.
Innovation Solution
The use of high-bond-strength adhesives with a first adhesive layer better suited to the core member and a second adhesive layer better suited to the cover member, eliminating the need for a base layer and enhancing the structural simplicity and bond strength between the core and cover members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a base layer is formed between the core member and cover member, then bond strength is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The adhesive system is segmented into two distinct layers: a first adhesive layer with high adhesion to the core member, and a second adhesive layer with high adhesion to the cover member. This segmentation allows each adhesive layer to be optimized for its specific bonding interface, achieving superior overall bond strength without requiring a complex base layer structure.
Solution Approach 2:
The invention changes the chemical and physical parameters of the adhesive system by selecting adhesives with different adhesion characteristics for each layer. The first adhesive is specifically selected for optimal bonding to the core member material, while the second adhesive is selected for optimal bonding to the cover member material, creating a tailored adhesive system that eliminates the need for a base layer.
2Strength
If a base layer is formed, then bond strength is improved, but manufacturing process complexity increases
Solution Approach 1:
The adhesive system is segmented into two distinct layers: a first adhesive layer with high adhesion to the core member, and a second adhesive layer with high adhesion to the cover member. This segmentation allows each adhesive layer to be optimized for its specific bonding interface, achieving superior overall bond strength without requiring a complex base layer structure.
Solution Approach 2:
The invention changes the chemical and physical parameters of the adhesive system by selecting adhesives with different adhesion characteristics for each layer. The first adhesive is specifically selected for optimal bonding to the core member material, while the second adhesive is selected for optimal bonding to the cover member material, creating a tailored adhesive system that eliminates the need for a base layer.
3Strength
If a base layer is formed, then bond strength is improved, but cover member thickness is limited
Solution Approach 1:
The invention changes the chemical and physical parameters of the adhesive system by selecting adhesives with different adhesion characteristics for each layer. The first adhesive is specifically selected for optimal bonding to the core member material, while the second adhesive is selected for optimal bonding to the cover member material, creating a tailored adhesive system that eliminates the need for a base layer.
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 approach results in a structurally simple industrial roll with high bond strength between the core and cover members, reducing manufacturing costs and extending the roll's useful life through increased surface grinding cycles without delamination under heavy loads and high speeds.
Implementation Method 1
a first adhesive layer which is made of a material having better adhesion properties to the core member than to the cover member
Implementation Method 2
a second adhesive layer which is made of a material having better adhesion properties to the cover member than to the core member
Data Source
Figure 1
Figure 2~2(J)
Figure 3
AI summary
The industrial roll (10) according to the invention includes a core member (11) made of a metal, a first adhesive layer (12) formed in contact with an outer surface of the core member (11), a second adhesive layer (13) formed on an outer surface side of the first adhesive layer (12), and a cover member (14) formed in contact with an outer surface of the second adhesive layer (13) and made of an elastic material. The first adhesive layer (12) is made of a material with better adhesive properties to the core member (11) than to the cover member (14), and the second adhesive layer (13) is made of a material with better adhesive properties to the cover member (14) than to the core member (11).