Plastic-Like Paper Sheet Coating for Printability and Recycling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paper materials with a plastic-like tactile effect face issues with printability, print quality, high production costs, and recyclability due to surface treatments using kaolin and polyurethane-based polymeric materials.
Innovation Solution
A paper sheet material with a uniform coating layer comprising silica, silicone, polyurethane-based, and styrene acrylic-based polymers, along with kaolin and precipitated calcium carbonate, enhancing printability and recyclability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If surface treatments based on kaolin and polyurethane-based polymeric materials are used to impart plastic-like tactile effect, then the plastic-like tactile effect is achieved, but printability and print quality are impaired
Solution Approach 1:
The coating composition uses a composite formulation combining polyurethane-based polymeric material (20-50 parts) with starch-based polymeric material (50-80 parts), along with kaolin (10-30 parts) and other minerals. This composite approach maintains the plastic-like tactile effect while the starch component provides better printability by creating a more suitable surface for ink anchoring.
Solution Approach 2:
The invention changes the compositional parameters of the coating layer by introducing starch-based polymers and adjusting the ratio of polymeric materials to minerals. This parameter modification allows the surface to maintain its plastic-like appearance while improving ink receptivity and print quality through altered surface chemistry and porosity.
2Shape
If surface treatments with silica or silicone products are applied to achieve plastic-like tactile effect, then the tactile effect is improved, but production cost increases and recyclability becomes difficult
Solution Approach 1:
The invention replaces expensive silicone products with more economical starch-based polymeric materials that are biodegradable and environmentally friendly. This substitution reduces production costs while improving recyclability, as starch-based coatings can be more easily processed and disposed of compared to silicone-based alternatives.
Solution Approach 2:
The invention modifies the chemical composition parameters by substituting silicone products with starch-based polymers and adjusting the mineral content ratios. This parameter change achieves the desired plastic-like tactile effect while using materials that are more environmentally compatible and easier to recycle.
3Shape
If polyurethane-based polymeric material and kaolin are used in surface treatment, then plastic-like tactile effect is obtained, but ink anchoring and drying performance are insufficient
Solution Approach 1:
The coating layer uses a composite system combining polyurethane-based polymeric material (20-50 parts) with starch-based polymeric material (50-80 parts), along with kaolin (10-30 parts) and precipitated calcium carbonate (5-20 parts). The starch component specifically enhances ink anchoring capabilities through its porous structure and surface properties, while the polyurethane maintains the plastic-like tactile effect.
Solution Approach 2:
The invention applies local quality by having different components serve different functions: the polyurethane-based polymer provides the plastic-like tactile appearance, while the starch-based polymer specifically addresses ink anchoring and drying performance. This functional differentiation within the coating layer resolves the contradiction between appearance and printability.
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 combination of these materials improves print quality and ink anchoring, reduces ink drying times, and facilitates recycling while maintaining a plastic-like tactile effect.
Implementation Method 1
a uniform coating layer on at least one face thereof, said coating layer having a composition comprising silica and/or a silicone product to impart to the paper material a plastic-like tactile effect
Implementation Method 2
The presence of the styrene acrylic-based polymeric material contributes to creating an ideal porosity for anchoring printing inks
Implementation Method 3
the precipitated calcium carbonate increases the degree of white, which enhances the brilliance of colours
Data Source
AI summary
The paper sheet material includes a paper substrate having a uniform coating layer on at least one face thereof, the coating layer having a composition with silica and/or a silicone product to impart to the paper material a plastic-like tactile effect and in addition a polymeric component and a mineral component, wherein the polymeric component includes a polyurethane-based polymeric material and a styrene acrylic-based polymeric material, and the mineral component includes kaolin and precipitated calcium carbonate.