Roll-Your-Own Cigarette Paper Bobbin Adhesive Application
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Solution Overview
Problem
The conventional process for manufacturing roll-your-own cigarette paper is inefficient due to the risk of tearing during adhesive strip application, leading to productivity issues and material loss, especially when the bobbin width is less than 10 cm.
Innovation Solution
Applying multiple moisture-activatable adhesive strips to a web of roll-your-own cigarette paper before cutting it into bobbins, rather than applying a single strip to each bobbin, reduces the risk of tearing and minimizes adhesive loss, enhancing productivity through improved application techniques like flexography.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive strip is applied to bobbin using pressurized nozzles, then adhesive application is achieved, but bobbin is easily torn
Solution Approach 1:
The patent inverts the conventional sequence by applying adhesive strips to the web before cutting into bobbins, rather than applying to bobbins after cutting. This reversal eliminates the tearing problem caused by pressurized nozzles on narrow bobbins while maintaining effective adhesive application.
Solution Approach 2:
The adhesive strips are applied in advance to the web before the cutting operation. This preliminary action ensures that the adhesive is already in place when bobbins are formed, eliminating the need for subsequent adhesive application to narrow bobbins that would cause tearing.
2Ease of operation
If adhesive strip is deposited along long edge of bobbin, then cigarette formation is enabled, but adhesive strip is lost outside bobbin
Solution Approach 1:
The patent replaces the mechanical approach of physically positioning adhesive on narrow bobbins with a precision printing system that deposits adhesive strips directly onto the web at predetermined locations. This substitution of the application mechanism eliminates material loss while ensuring proper positioning for cigarette formation.
3Productivity
If conventional process is used for bobbin manufacture, then production can proceed, but process must be regularly stopped
Solution Approach 1:
By applying all adhesive strips to the web before cutting operations, the patent eliminates the need for intermediate stopping to apply adhesive to each bobbin individually. This preliminary action enables continuous production while improving process reliability by removing a critical failure point.
4Length of moving object
If bobbin width is less than 10 cm, then sheet size is reduced, but tearing risk increases during adhesive application
Solution Approach 1:
The patent resolves the tearing risk in narrow bobbins by inverting the process sequence: adhesive strips are applied to the wide web when it has sufficient structural integrity, then the web is cut into narrow bobbins that already contain the adhesive strips. This eliminates the vulnerability of narrow bobbins during adhesive application.
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 method increases productivity by allowing continuous operation without frequent process stops, reduces adhesive strip loss, and enhances the tensile strength of the bobbins, resulting in a more efficient production process for roll-your-own cigarette paper.
Implementation Method 1
applying n moisture-activatable adhesive strips to a web of roll-your-own cigarette paper
Data Source
AI summary
The present invention relates to a process for the manufacture of bobbins, of sheets and of a booklet of sheets of roll-your-own cigarette paper and to a process for the manufacture of a booklet of sheets of roll-your-own cigarette paper.