Tail Sealing of Convolutely Wound Web Material
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Solution Overview
Problem
Existing tail gluing systems for convolutely wound web materials are costly, complex, and prone to pollution due to excess adhesive overflow, which reduces adhesive effectiveness and requires frequent maintenance, while also lacking the ability to apply adhesive patterns or indicia on the final product.
Innovation Solution
A process involving a tail sealing apparatus that uses in-feed belts and an adhesive applicator to position the tail portion of the convolutely wound web material tangentially away from the main roll, applying adhesive to the subjacent convolution for secure attachment, while minimizing adhesive overflow and allowing for pattern application and indicia on the final product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex tail manipulation systems are used to achieve precise glue application, then tail sealing quality is improved, but device complexity and cost increase
Solution Approach 1:
The tail is separated from the main roll and positioned independently by in-feed belts, allowing the glue applicator to work on the subjacent convolution without manipulating the entire roll structure. This segmentation enables precise glue application with simpler equipment.
Solution Approach 2:
The in-feed belts act as intermediaries that position the tail tangentially away from the main roll, creating the necessary spatial relationship for glue application without requiring complex tail manipulation mechanisms. The belts mediate between the roll and the glue applicator.
2Ease of operation
If open adhesive systems are used to simplify the process, then ease of operation is improved, but adhesive stream pollution increases
Solution Approach 1:
The tail is extracted and positioned away from the main roll, allowing adhesive to be applied only to the subjacent convolution area. This extraction prevents adhesive from contacting the tail directly, eliminating the need for open adhesive systems and preventing pollution of the adhesive stream.
Solution Approach 2:
Adhesive is applied locally to the subjacent convolution rather than using open systems that require large adhesive baths. This localized application reduces adhesive exposure to contaminants while maintaining effective sealing.
3Strength
If excess adhesive is dispensed through slits to ensure adequate coverage, then adhesion strength is improved, but loss of substance and maintenance requirements increase
Solution Approach 1:
The adhesive pattern on the subjacent convolution is copied onto the tail surface through direct contact during the sealing process. This copying mechanism ensures adequate adhesive coverage for strong bonding without requiring excess adhesive to be dispensed, as the adhesive is transferred efficiently from the convolution to the tail.
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 reduces maintenance requirements, minimizes pollution, increases throughput, and enables the application of adhesive patterns, resulting in a more efficient and cost-effective tail gluing system that meets quality control standards.
Implementation Method 1
in-feed belts... to position the tail portion
Implementation Method 2
applying adhesive to the subjacent convolution for secure attachment
Data Source
AI summary
A process for sealing the tail of a convolutely wound web material is disclosed. The process comprises the steps of: (a) providing the convolutely wound web material having a tail portion connectively associated thereto; (b) disposing the tail portion away from an immediately subjacent convolution of the convolutely wound web material; (c) disposing a fluid upon the immediately subjacent convolution; and, (d) fixably and removeably disposing the tail portion of the convolutely wound web material upon the fluid disposed upon the immediately subjacent convolution.