Deep-Nested Embossed Paper Conditioning Process
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Solution Overview
Problem
Deep-nested embossing of paper products often results in significant loss of paper strength, limiting the manufacturers' ability to achieve desired aesthetic embossing without compromising the product's functionality.
Innovation Solution
A process involving conditioning of paper before embossing, which includes heating and/or adding moisture to make the paper more plastic, combined with the use of embossing apparatus with coordinated non-random protrusion patterns on the cylinders, allowing for deeper embossment without strength loss, resulting in embossed products with high wet burst strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If deep-nested embossing is performed to achieve greater embossment depth and aesthetic appeal, then the aesthetic quality and bulkiness of the paper product is improved, but the paper strength deteriorates significantly
Solution Approach 1:
The paper web is conditioned before embossing to increase its plasticity, making it more suitable for deep embossing. This preliminary conditioning action prepares the material to withstand the embossing process without excessive strength loss, enabling deeper embossments while maintaining acceptable strength levels.
Solution Approach 2:
The embossing process parameters are optimized by controlling the engagement depth of the embossing knobs and adjusting the conditioning parameters (temperature, moisture) of the paper web. By carefully managing these parameters, deep embossments can be achieved while minimizing strength deterioration through the embossing process.
2Shape
If embossing engagement is increased to achieve deeper embossment heights, then the aesthetic appearance is improved, but the paper strength loss is exacerbated
Solution Approach 1:
The engagement depth of the embossing knobs is optimized to achieve the desired embossment height while minimizing strength loss. The conditioning parameters (temperature and moisture content) are adjusted to increase paper plasticity, allowing for deeper embossing engagement without excessive strength deterioration.
Solution Approach 2:
The paper web undergoes preliminary conditioning to increase its plasticity before embossing. This preparation allows the paper to better withstand deeper embossing engagement, enabling higher embossment heights to be achieved with reduced strength loss compared to unconditioned paper.
3Shape
If paper conditioning is applied before embossing to increase plasticity, then the embossment height is increased at given engagement, but the process complexity increases
Solution Approach 1:
A conditioning step is introduced before embossing to heat and/or moisten the paper web, increasing its plasticity. This preliminary action enables deeper embossments at the same engagement depth, improving aesthetic appearance. The conditioning system integrates with the existing embossing line, adding functionality without excessive complexity.
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 process maintains or even increases the paper's strength while achieving deeper embossment heights, allowing for enhanced aesthetic appeal without compromising the product's functionality.
Implementation Method 1
conditioning the one or more plies of paper, wherein the conditioning step comprises heating the one or more plies of paper
Implementation Method 2
adding moisture to the one or more plies of paper
Implementation Method 3
embossing the one or more plies of the paper where the resulting embossed ply or plies of paper comprise a plurality of embossments
Data Source
AI summary
The present invention relates to processes for producing a deep-nested embossed paper products. The invention relates to a process for producing a deep-nested embossed paper products comprising one or more plies of paper where the resulting embossed ply or plies of paper comprise a plurality of embossments having an average embossment height of at least about 650 μm and have a high finished product wet burst strength relative to the unembossed wet strength. The present invention relates to a process for producing deep-nested embossed paper products comprising the steps of a) delivering one or more plies of paper to a deep-nested embossing process, b) conditioning the one or more plies of paper, wherein the conditioning step comprises heating the one or more plies of paper, adding moisture to the one or more plies of paper, or both heating and adding moisture to the one or more plies of paper, and c) embossing the one or more plies of the paper where the resulting embossed ply or plies of paper comprise a plurality of embossments having an average embossment height of at least about 650 μm.