Nozzle Tip Temperature Management for Fiber Web Treatment
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Solution Overview
Problem
Nozzles used for applying heated treatment substances to fiber webs often experience substance adhesion at the tip, leading to uneven application and potential fiber web damage due to lumps forming and dropping during reeling.
Innovation Solution
The nozzle tip is equipped with temperature management means, such as insulation or cooling systems, to maintain a temperature range that prevents substance adhesion, typically between 15-50 °C, using materials like PVC, neophren, or aluminum, depending on the treatment substance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the nozzle tip temperature is increased to apply heated treatment substance, then the treatment substance can be effectively applied to the fiber web, but substance adhesion occurs at the nozzle tip causing uneven application and potential fiber web damage
Solution Approach 1:
The patent applies a cooling element specifically at the nozzle tip region where adhesion occurs, creating a localized temperature difference. The cooling element is positioned only at the tip while the rest of the nozzle body remains hot, allowing heated treatment substance to be applied while preventing adhesion at the critical tip area.
Solution Approach 2:
The patent changes the temperature parameter at the nozzle tip by introducing a cooling element that maintains the tip temperature lower than the treatment substance temperature. This temperature parameter change prevents the treatment substance from adhering to the nozzle tip while still allowing effective application to the fiber web.
2Temperature
If insulation means are used to maintain nozzle tip temperature, then temperature management is improved, but device complexity increases
Solution Approach 1:
The patent introduces a cooling element as an intermediary component between the heated treatment substance and the nozzle tip. This cooling element acts as a mediator that absorbs excess heat locally, preventing adhesion without requiring complex insulation systems throughout the entire nozzle structure.
Solution Approach 2:
The patent segments the nozzle into two functional zones: a heated body for maintaining treatment substance temperature and a cooled tip for preventing adhesion. This segmentation allows each part to perform its specific function independently, simplifying the overall design compared to insulating the entire nozzle.
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 solution ensures consistent and even application of treatment substances, minimizing the risk of adhesion and fiber web damage by maintaining the nozzle tip temperature within an optimal range, suitable for various types of nozzles and treatment substances.
Implementation Method 1
cooling means for cooling the tip or end of the nozzle
Implementation Method 2
insulation means for insulating the tip or end of the nozzle
Data Source
Figure 1~3
Figure 4~7
AI summary
The invention relates to a device for treating a fiber web, especially a device for applying treatment substance for treating a moving fiber web on at least one surface of the fiber web, which device comprises at least one nozzle (10) comprising a channel (11) for the treatment substance and a tip or end (13) of the nozzle (10) for providing a treatment substance flow (15) on the fiber web- The tip or end of the nozzle (10) of the device for treating a fiber web is provided with means (21, 22) for managing the temperature of the tip or end (13) of the nozzle (10) for preventing the adhering of the heated treating substance.