Splicing Tape Splitting Assembly for Uniform Roll Separation
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Solution Overview
Problem
Conventional adhesive tapes for automatic roll changes in printing processes suffer from unpredictable delamination and non-constant splitting forces, leading to stress on materials, potential breakages, and residue issues that can damage production rollers.
Innovation Solution
A double-sided splicing tape with a splitting assembly comprising a supporting layer and a polymeric material layer, where the polymeric layer has non-tacky characteristics after splitting, ensuring uniform separation and avoiding adhesive residues, and an inductive detection system for automated cutting and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If detaching substances are used between layers to allow splitting, then delamination is enabled, but residues on split surfaces damage production rollers
Solution Approach 1:
The patent extracts and removes the detaching substance layer entirely from the tape structure. Instead of using a separate detaching layer, the invention relies on the natural lack of adhesion between the polymeric material layer and the supporting layer, eliminating the source of harmful residues that would otherwise contaminate production rollers.
Solution Approach 2:
The tape is designed as a disposable component where the splitting assembly is intended to be used once and then discarded. The supporting layer and polymeric material layer are configured to separate cleanly without requiring recovery or cleaning of residues, treating the tape as a single-use solution that eliminates contamination issues.
2Ease of operation
If non-constant splitting force is applied during delamination, then separation occurs, but stress peaks cause deformation or breakage of tape layers and sheet material
Solution Approach 1:
The patent applies local quality by creating a specific interface between the supporting layer and polymeric material layer with controlled adhesion characteristics. The splitting assembly is designed with localized separation properties that ensure uniform force distribution during delamination, preventing stress concentration at specific points that would cause deformation or breakage.
Solution Approach 2:
The invention changes the physical parameters of the splitting interface by selecting specific materials for the supporting layer and polymeric material layer with complementary mechanical properties. This material selection creates a controlled separation interface that distributes splitting forces uniformly, preventing stress peaks while maintaining the strength and integrity of both the tape and sheet material.
3Productivity
If conventional adhesive tapes are used for automatic splicing, then roll coupling is achieved, but unpredictable delamination causes non-homogeneous detachment between layers
Solution Approach 1:
The patent segments the tape into distinct functional layers with clearly defined separation interfaces. The splitting assembly consisting of the supporting layer and polymeric material layer is designed with a predetermined separation plane that ensures homogeneous delamination during the splicing process, eliminating the unpredictable detachment observed in conventional tapes.
Solution Approach 2:
The invention uses composite materials with specific adhesion characteristics between layers. The supporting layer and polymeric material layer are selected and combined to create a controlled separation interface that delaminates uniformly during splicing, providing predictable and homogeneous detachment that improves manufacturing precision while maintaining automatic splicing capability.
Data Source
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AI summary
The present invention relates to a splicing tape 100; 101 configured to join a terminal edge portion of a roll of sheet material B1 to a further sheet material B2. The tape 100; 101 comprises a first layer of adhesive material A1 configured to be coupled on a portion of the outer turn of the of the sheet material roll B1 near the ending edge of the roll; a second layer of adhesive material A2 configured to be coupled to the further sheet material B2, a splitting assembly 50, comprised between said first adhesive layer A1 and said second adhesive layer A2, the overall configuration being such that when an external splitting force due to a dragging force, of the further sheet material B2 acting on the splicing tape 100; 101, exceeds an adhesion force between said substantially planar face of the supporting layer 15; 16 and the polymeric layer 25, the splitting assembly 50 is split allowing the obtaining of a junction between the sheet material roll B1 and the further material B2 by means of said second adhesive layer A2, wherein said polymeric layer 25 and said supporting layer (15; 16) lie, respectively, on opposite faces of the obtained junction.