Sheet Manufacturing Apparatus Air Ejection Web Transport
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In sheet manufacturing apparatuses, the web tends to stick to the transport section due to higher moisture content, preventing its delivery to the pressure roller, causing transport issues and potential damage.
Innovation Solution
Incorporating an air ejection section that uses compressed air to peel the web off the transport belt, allowing smooth delivery to the sheet forming section, where it undergoes heating and pressurizing treatments to enhance mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the transport section comes into contact with one surface of the web to perform transport, then the web can be held and transported, but the web sticks to the transport section due to higher moisture content and cannot be delivered to the pressure roller
Solution Approach 1:
A air ejection section is introduced as an intermediary mechanism between the humidification section and the transport section. This section ejects air to the web to reduce adhesion, enabling smooth transition from humidification to transport without direct contact sticking.
Solution Approach 2:
The air ejection section utilizes pneumatic pressure to eject air toward the web surface. This pneumatic action reduces the adhesion between the moist web and the transport section, allowing the web to be peeled off and delivered smoothly to the pressure roller.
2Productivity
If compressed air is ejected to the web to peel it off the transport belt, then web transport is improved, but additional equipment complexity is introduced
Solution Approach 1:
The air ejection section utilizes pneumatic pressure to eject air toward the web surface. This pneumatic action reduces the adhesion between the moist web and the transport section, allowing the web to be peeled off and delivered smoothly to the pressure roller.
Solution Approach 2:
A air ejection section is introduced as an intermediary mechanism between the humidification section and the transport section. This section ejects air to the web to reduce adhesion, enabling smooth transition from humidification to transport without direct contact sticking.
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
Ensures efficient web transport and formation of sheets with improved mechanical strength by preventing sticking and facilitating uniform moisture application, thereby reducing the risk of web damage and ensuring consistent sheet quality.
Implementation Method 1
an air ejection section provided at an end portion positioned on a sheet forming section side in the web transport section, and ejecting compressed air to the web
Implementation Method 2
an accumulation section that forms a web by accumulating a material containing fibers by an air flow
Implementation Method 3
a sheet forming section that forms a sheet by subjecting the web supplied from the web transport section to at least one of heating and pressurizing treatments
Implementation Method 4
a sheet forming section that forms a sheet by subjecting the web supplied from the web transport section to at least one of heating and pressurizing treatments
Data Source
AI summary
There is provided a sheet manufacturing apparatus including: an accumulation section that forms a web by accumulating a material containing fibers by an air flow; a web transport section including a transport belt that comes into contact with one surface of the web and holds the web; a sheet forming section that forms a sheet by subjecting the web supplied from the web transport section to at least one of heating and pressurizing treatments; and an air ejection section provided at an end portion positioned on a sheet forming section side in the web transport section, and ejecting compressed air to the web.