Multilayer Web Embossing with Pre-Humidification for Clear Patterns
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Solution Overview
Problem
Existing web products face issues with damaged fibrous structures due to insufficient stretchability, leading to collapsing or unclear patterns, and require excessive fibrous materials to enhance fluffiness and support, increasing costs.
Innovation Solution
An embossing apparatus with dual embossing assemblies and humidifying devices to form laminated multilayer web products, utilizing airflow and heating to improve stretchability and pattern clarity, reducing the need for excessive fibrous materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the web product is passed through an embossing roller set to form embossed patterns, then the web product acquires embossed/debossed patterns, but the fibrous structure of the web product is damaged due to insufficiency of stretchability
Solution Approach 1:
The web product is humidified before embossing to improve its stretchability in advance. This preliminary humidification treatment allows the fibrous structure to become more pliable, enabling it to withstand the embossing process without damage while still forming clear embossed patterns.
Solution Approach 2:
The physical state of the web product is changed by humidification, which alters its stretchability parameter. This parameter change enables the web product to better withstand the mechanical stress of embossing while maintaining fibrous structure integrity.
2Strength
If two or more web products are glued and laminated together to enhance fluffiness and solid hand-feeling, then the web product acquires three-dimensional embossed pattern and improved hand-feeling, but the expenses for fibrous materials increase
Solution Approach 1:
The web product undergoes preliminary humidification treatment before embossing, which improves its stretchability and allows for better pattern formation. This enables achieving good hand-feeling and fluffiness with less material or fewer layers, reducing overall material consumption.
Solution Approach 2:
By changing the physical parameters of the web product through humidification, the invention achieves improved embossing quality and hand-feeling characteristics without proportionally increasing the quantity of fibrous material required.
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 apparatus produces multilayer web products with excellent fluffiness, solid hand-feeling, and clear patterns while minimizing material usage and space requirements.
Implementation Method 1
the first web product is humidified by a first humidifying device before being conveyed to the first web product embossing assembly
Implementation Method 2
the airflow guide device is optionally operable to blow a hot airflow or a cold airflow toward the roller surface of the second steel embossing roller
Implementation Method 3
the first steel embossing roller, the second steel embossing roller, the first rubber embossing roller, and the second rubber embossing roller are optionally provided with a heating device
Data Source
AI summary
An embossing apparatus for producing a fluffy multilayer web product includes a first embossing assembly that forms a first embossed pattern on a first web product and a second embossing assembly that forms a second embossed pattern on a second web product. The first web product is humidified by a first humidifying device before being conveyed to the first web product embossing assembly, and the second web product is humidified by a second humidifying device before being conveyed to the second web product embossing assembly. The first web product that is formed with the first embossed pattern is applied with glue and then conveyed, together with the second web product that is formed with the second embossed pattern, to pass between a laminating roller and the first steel embossing roller to be then out fed along an out-feeding path.