Centralized Glue Feed System for Paper Web Sizing
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Solution Overview
Problem
Conventional glue application systems for paper or cardboard webs require significant space, leading to high plant and maintenance costs due to separate line guides and complex control systems, and result in energy inefficiencies from multiple glue supply systems.
Innovation Solution
A centralized glue feed system supplies glue to multiple application bars, reducing installation space, energy consumption, and maintenance costs by minimizing backflow and allowing central control, with a centrifugal or screw pump and screening devices ensuring consistent glue quality and flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate glue supply systems are used for each glue application bar, then each bar receives dedicated glue supply, but the system occupies large space and increases plant and maintenance costs
Solution Approach 1:
The patent combines multiple separate glue supply systems into a single centralized supply system that serves multiple glue application bars. The supply tank, pump, and sieve device are shared among all application bars, reducing the overall space occupation while maintaining reliable glue supply to each bar through common feed lines.
2Ease of operation
If separate glue supply systems are used for each glue application bar, then each bar has independent control, but plant costs and maintenance costs increase
Solution Approach 1:
The patent merges multiple independent control systems into a single centralized control system. The automatic regulation and control devices are installed once in the common supply system rather than being replicated for each application bar, significantly reducing plant costs and maintenance costs while still enabling independent operation of each application bar.
3Adaptability or versatility
If multiple independent glue supply systems are used, then each system can be optimized independently, but energy consumption increases due to multiple pumps
Solution Approach 1:
The patent combines multiple pump systems into a single pump that serves all glue application bars. This centralized pumping system reduces energy consumption by eliminating redundant pump operations while maintaining the ability to optimize glue supply to different bars through flow control valves and regulation devices in the common system.
4Ease of operation
If separate line guides and elements are provided for each glue supply system, then routing is simplified for each system, but the overall system complexity increases
Solution Approach 1:
The patent merges separate line guides and routing elements into a common infrastructure. The feed lines, valves, and control elements are shared among all application bars, reducing overall system complexity while maintaining simple routing to each bar through the common distribution network.
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 centralized system reduces energy consumption by up to 10% and lowers maintenance and plant costs by simplifying the routing of lines and reducing the need for separate components, while ensuring consistent glue quality and efficient regulation.
Implementation Method 1
The glue feed device preferably has a centrifugal pump or a screw pump for pumping the glue to the glue spray application bars.
Implementation Method 2
The glue feed device preferably has a feed tank in which the glue can be received, and at least one screening device, through which the glue fed from the feed tank by the pump to the glue spray application bar is screened and cleaned.
Data Source
Figure 1
AI summary
Sizing agent applicator system of a machine for processing a paper- or cardboard web for applying sizing agent on a paper- or cardboard web, comprises at least two sizing agent spray applicator beams for spraying the sizing agent on the respectively associated side of the paper- or the cardboard web, which are connected with a common sizing agent supplying device, by which the sizing agent is supplied to the sizing agent spray applicator beam.