Cover-Flap Transfer Tape for High-Speed Paper Web Turn-Up
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Solution Overview
Problem
High-speed transfer of lightweight paper webs, such as tissue or newsprint, is challenging due to their weak structure and contamination of adhesive Transfer Tapes with airborne dust and debris, leading to failed transfers, production loss, inconsistent winding, and unsafe conditions.
Innovation Solution
The use of a Cover Flap Transfer Tape Construct with a layered structure that protects the adhesive surface until needed, featuring a Cover Flap that opens to expose the adhesive during the transfer process, utilizing aerodynamic and centrifugal forces to ensure reliable adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adhesive Transfer Tape is exposed during storage and handling, then it can be applied to the spool, but the adhesive surface becomes contaminated with airborne dust and debris
Solution Approach 1:
The patent applies preliminary action by pre-protecting the adhesive surface with a cover flap before the Transfer Tape is put into service. The cover flap is attached to the Transfer Tape during manufacturing, creating a protective barrier that remains in place during storage, handling, and installation. This eliminates the need to handle exposed adhesive and prevents contamination before the adhesive is actually needed for the turn-up operation.
Solution Approach 2:
The cover flap serves as an intermediary element between the adhesive surface and the contaminated environment. It is a sacrificial component that can be easily removed or opened at the appropriate time to expose the adhesive, while having already performed its protective function during the entire preparation and installation process. This intermediary protects the critical adhesive surface without interfering with its eventual bonding function.
2Productivity
If high-speed transfer is performed without protective measures, then production speed is maintained, but adhesive contamination leads to failed transfers
Solution Approach 1:
The cover flap is pre-attached to the Transfer Tape during manufacturing, establishing protection before the high-speed operation begins. This preliminary protective measure ensures that even during rapid installation and high-speed turn-up operations, the adhesive remains uncontaminated, thereby maintaining both the speed and reliability of the transfer process without requiring slowdowns or rework.
3Adaptability or versatility
If Transfer Tape is stored with exposed adhesive, then it is ready for immediate use, but adhesive integrity deteriorates due to contamination
Solution Approach 1:
The adhesive is pre-protected with a cover flap during storage, allowing the Transfer Tape to be stored for extended periods without degradation. The cover flap maintains adhesive integrity throughout storage and handling, ensuring that when the Transfer Tape is finally installed and used, the adhesive retains full bonding strength and the tape is equally ready for service.
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
Enables consistent and reliable high-speed severing and transfer of paper webs without contamination, reducing downtime, waste, and improving safety by maintaining adhesive integrity.
Implementation Method 1
The cover flap acts as a protective barrier that can be removed or opened to expose the adhesive surface when needed
Implementation Method 2
utilizing aerodynamic and centrifugal forces to ensure reliable adhesion
Implementation Method 3
utilizing aerodynamic and centrifugal forces to ensure reliable adhesion
Implementation Method 4
an adhesive surface from contamination, leading to failed transfers
Data Source
AI summary
A family of paper tape turn-up constructs for accomplishing automated paper web turnup in paper processing. Methods and apparatus to form the constructs are described. Methods and Apparatus to apply the constructs to paper production equipment are also described. In some examples, the paper tape turn-up construct includes a cover flap to protect an adhesive layer during initiation of the paper web turn up process.