Paper Layer Ink-Resin Contradiction Local Quality

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Solution Overview

Problem

Existing paper layers for components like floors, walls, and furniture face issues with ink absorption and resin coating, leading to inadequate printing results and poor bonding with base bodies and protective layers.

Innovation Solution

A paper layer with an ink-absorbing compound that leaves open spaces on the surface, allowing for resin penetration and ensuring good bonding, while maintaining print quality by using particles with specific size ranges and distribution, and applying resin either before or after printing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If an ink-receiving layer completely covers the fiber structure, then printing quality is improved, but resin penetration and bonding are worsened

Engineering Contradiction:
Improveprinting qualityVSAvoidbonding strength
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The ink-receiving layer is applied selectively only to specific areas where printing is required, rather than completely covering the entire fiber structure. This localized application maintains printing quality in necessary regions while leaving other areas open for resin penetration and bonding, thus resolving the contradiction between printing quality and bonding strength

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The surface treatment is divided into different zones: areas with ink-receiving layer for printing and areas without for resin absorption. This segmentation allows the paper to simultaneously achieve good printing results and adequate resin penetration for proper bonding to the base body

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If resin is applied from above, then full-surface coating is improved, but bonding performance is worsened

Engineering Contradiction:
Improveresin coating uniformityVSAvoidbonding performance
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

Instead of applying resin from above (top side), the resin is applied from below (base body side). This inverted application method allows resin to penetrate the fiber structure effectively and reach the paper layers, ensuring proper bonding performance while still achieving adequate coating distribution

Inventive Principle:
Principle #13The other way round (Inversion)

3Manufacturing precision

If the fiber structure is completely covered, then printing surface uniformity is improved, but resin absorption is worsened

Engineering Contradiction:
Improvesurface uniformityVSAvoidresin absorption
Core Design Contradiction:
Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The fiber structure is partially covered with ink-receiving layer in specific regions, leaving other regions exposed. This creates local variations in surface properties: covered areas provide uniform printing surfaces, while uncovered areas maintain open pores for resin absorption, thus resolving the contradiction between surface uniformity and resin absorption

Inventive Principle:
Principle #3Local quality

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 solution achieves excellent printing results and strong bonding between the paper layer and base body, as well as the protective layer, with reduced resin usage and lower production costs, ensuring a durable and effective connection.

Implementation Method 1

a paper layer (1) having a fiber structure (7), having an ink absorbing compound (9) which at least essentially encases the upper area of the fibers, wherein open spaces (8) in the coated fiber structure remain on the top side of the paper layer (1)... a paper web that is absorbent for liquid synthetic resin along its entire thickness is soaked from the underside with liquid synthetic resin

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

open spaces (8) with a length of more than 20 μm... ensure that the paper layer is sufficiently resinated... the synthetic resin does not completely penetrate the paper web

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Data Source

PatentEP2274485B2Paper layer for producing a planar printed or printable component
Publication Date: 2020.10.28 FLOORING INDUSTRIES LTD SARL
  • EP2274485B2 patent drawingFigure 1~3
  • EP2274485B2 patent drawingFigure 4
  • EP2274485B2 patent drawingFigure 5

AI summary

The invention relates to a paper layer (1) for producing a planar printed or printable component (5), more particularly for floor, wall, ceiling and/or furniture applications, the paper layer (1) being intended, before or after printing, for application to a planar base (4) of the component (5) under pressure and/or heat, the paper layer (1) having a fibre structure (7) comprising fibres (6) between which there are interstices (8). In order, first, to enable sufficient resinification and in order, second, to ensure a satisfactory print outcome, the invention provides for an ink-receiving compound (9) to be provided at least on the top face in the fibre structure (7), said compound (9) at least substantially enveloping the fibres (6) in the top face region of the fibre structure (7), and for open interstices (8) of the enveloped fibre structure (7) to remain at the top face (2) of the paper layer (1).