Adhesive Tape Anti-Slip Mixed Layer Coating
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Solution Overview
Problem
Existing adhesive tapes with anti-slip and anti-adhesive properties are either economically unviable due to the high cost of resin coatings or inefficient in providing both strong anti-slip and anti-adhesion, and they often require protective backings that increase waste and handling complexity.
Innovation Solution
An adhesive tape with a mixed layer comprising an anti-slip coating and an anti-adherent coating, applied in a specific alternation of thick and thin parts to cover 5-80% and 20-100% of the surface respectively, allowing for high anti-slip and anti-adhesion properties while minimizing material usage and waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thermoplastic resin coating with hollow microspheres is used to create an inhomogeneous anti-slip surface, then anti-slip properties are improved, but anti-adherent properties deteriorate because microspheres adhere to PSA adhesives
Solution Approach 1:
The coating is segmented into discrete hollow microspheres distributed within the thermoplastic resin matrix, creating an inhomogeneous surface structure that provides anti-slip properties while maintaining anti-adherent characteristics through the air-filled cores of the microspheres
Solution Approach 2:
The surface exhibits local variation in properties through the distribution of microspheres, where the raised spherical structures provide friction (anti-slip) while the air-filled centers and resin composition maintain low adhesion to PSA adhesives
2Strength
If silicone resins are used to achieve high anti-slip and anti-adhesion properties, then both properties are improved, but manufacturing cost increases making the product economically unviable
Solution Approach 1:
The patent replaces expensive silicone resins with a more economical thermoplastic resin formulation containing hollow microspheres, achieving comparable anti-slip and anti-adherent performance at lower material cost, making the product economically viable for commercial applications
Solution Approach 2:
The coating combines thermoplastic resin with hollow microspheres to create a composite material that delivers anti-slip and anti-adherent properties comparable to expensive silicone resins but at significantly lower cost, improving the economic viability of the adhesive tape
3Reliability
If a protective backing is used to prevent adhesive sticking during winding, then anti-adherent properties are improved, but device complexity increases and waste is generated that must be disposed of
Solution Approach 1:
The mixed layer coating on the adhesive tape's non-adhesive side inherently provides anti-adherent properties that prevent sticking during winding and storage, eliminating the need for a separate protective backing and its associated disposal and handling steps
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 tape achieves satisfactory anti-slip and anti-adhesion properties with reduced material and waste, enabling efficient stabilization of objects during transport and easy unwinding without excessive adhesive resistance, while being economically viable.
Implementation Method 1
coating with a composition consisting of a thermoplastic resin with the addition of hollow microspheres whose core contains a volatile fluid which expands when this composition is heated
Implementation Method 2
The mixed layer is configured to provide anti-slip properties
Data Source
AI summary
Adhesive tape that includes a support provided with a first or front face and a second or rear face, an adhesive layer that covers at least part of the rear face, a mixed layer that covers the front face. The mixed layer has two successive coatings that include an “anti-slip” coating and a “anti-adherent” coating, each of which can be carried out first or second, and which form an alternation of thin parts and thick parts. The coating carried out first covers a predetermined area of the surface of the front face, and the coating carried out secondly covers a predetermined area of the surface formed by the front face at least partially covered by the coating carried out first. The anti-slip coating covers an area comprised between 5 to 80% of the area of the front face with a first composition forming a layer having anti-slip properties, the layer having a minimum thickness of 4 μm. The anti-adherent coating covers an area of between 20 to 100% of the area of the front face with a second composition forming a layer with anti-adherent properties, the layer with anti-adherent properties having a maximum thickness of 3 μm.