Inkjet-Printable Twist and Fold Wrap Films for Water-Resistant Prints
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Solution Overview
Problem
Existing films for packaging small goods lack high-speed inkjet printability, water-resistant prints, crack resistance, sealing properties, moisture and oxygen barrier, compostability, and sustainable materials while maintaining twist and fold retention.
Innovation Solution
An inkjet printable twist and/or fold wrap film comprising a non-oriented polymer film, an ink-receiving layer with inorganic particles and a binder, and an adhesion promoting layer, which can be printed with water-based inks, providing high-quality prints and excellent mechanical stability, and is compostable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional film structure is used, then twist retention and fold retention are maintained, but inkjet printability and water-resistant print quality are compromised
Solution Approach 1:
The film is divided into distinct functional layers: a base film layer providing mechanical stability and twist retention, and a separate ink-receiving layer providing printability. This segmentation allows each layer to be optimized for its specific function without compromising the other.
Solution Approach 2:
The invention uses a composite structure combining a polymer base film with a coating layer containing inorganic particles and binder. This composite material approach enables simultaneous achievement of mechanical properties (twist retention) and surface properties (inkjet printability, water resistance).
2Adaptability or versatility
If the film is made compostable and environmentally friendly, then sustainability is improved, but mechanical stability and stiffness for high-speed machinery are compromised
Solution Approach 1:
The invention modifies the chemical composition parameters of the film by incorporating specific inorganic particles (such as calcium carbonate, silica, or boehmite) and controlled binder types. These parameter changes enable the film to achieve both compostability and sufficient mechanical stability for industrial processing.
Solution Approach 2:
The ink-receiving layer is designed with a porous structure containing inorganic particles, which provides both environmental compatibility for composting and mechanical reinforcement. The porous structure allows for ink penetration while the inorganic particles maintain structural integrity.
3Reliability
If the film exhibits high crack resistance and sealing properties, then reliability is improved, but twist retention and fold retention are compromised
Solution Approach 1:
The film structure is segmented into a flexible base film layer that maintains twist and fold retention, and a separate crack-resistant coating layer containing inorganic particles. This segmentation allows the base film to provide geometric stability while the coating provides mechanical reinforcement.
Solution Approach 2:
The composite structure combines the flexibility of the base polymer film with the crack resistance of the inorganic particle-containing coating. The binder in the coating layer creates a flexible matrix that maintains twist retention while the inorganic particles provide crack resistance and sealing properties.
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 film achieves high-speed inkjet printing with high-quality water-resistant prints, maintains twist and fold retention, and exhibits low friction for machine compatibility, while being compostable and environmentally friendly.
Implementation Method 1
an adhesion promoting layer between the non-oriented polymer film (a) and the at least one ink-receiving layer (b)
Data Source
AI summary
The present invention relates to inkjet printable twist and/or fold wrap film for packaging applications, to inkjet printed twist and/or fold wrap film for packaging applications, to packaging including said inkjet printable or inkjet printed twist and/or fold wrap film, the use of the inkjet printable or inkjet printed twist and/or fold wrap film for as well as to the method of making a filled packaging.