Heat-Sealable Thermo-Printable Tape With a Smooth Wash-Durable Surface
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Solution Overview
Problem
Conventional thermoprintable tapes face issues such as curling after washing, poor adhesion to certain fabrics, susceptibility to moisture, and difficulty in achieving high-resolution printing due to the surface texture following the weave of the fabric, which requires additional processing and increases product processing time.
Innovation Solution
A heat-sealable thermoprintable tape with an extruded thermoplastic coating and a heat-seal polymer layer bonded on a support layer with an open structure, providing a smooth printable surface without the need for calendaring or additional surface treatment, using a polyurethane coating and a heat-sealable polymer that bond within the support layer, and an optional aliphatic polycarbonate top coat for UV resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tight weave or high-count fabric is used as the substrate, then the tape structure is stable and durable, but the surface follows the weave contours making high-resolution printing difficult
Solution Approach 1:
The invention separates the substrate function from the printing surface function by using a two-layer construction. The woven fabric substrate provides structural stability, while a separate thermoplastic coating layer provides the smooth printing surface. This segmentation allows each layer to independently fulfill its specific function without compromising the other.
Solution Approach 2:
The invention uses a composite structure combining woven fabric substrate with a thermoplastic coating layer. This composite material approach allows the tape to simultaneously possess the durability and structure of woven fabric and the smoothness required for high-resolution printing, resolving the contradiction between structural stability and surface smoothness.
2Manufacturing precision
If multiple coating layers are applied to smooth the surface, then the printing surface becomes smoother, but the processing time and complexity increase
Solution Approach 1:
The thermoplastic coating is applied in advance to the woven fabric substrate, creating a pre-smoothed surface that is ready for high-resolution printing. This preliminary action eliminates the need for multiple subsequent coating and calendaring operations, significantly reducing processing time while maintaining surface smoothness.
Solution Approach 2:
The invention extracts the surface smoothing function from the multi-step coating and calendaring process and integrates it into a single thermoplastic coating application step. This extraction simplifies the manufacturing process by combining multiple functions into one operation, reducing both time and complexity.
3Ease of manufacture
If conventional solvent-based coatings are used, then the coating can be applied easily, but the solvents require evaporation and curing time, and cross-linkers may not be solvent-resistant
Solution Approach 1:
The invention changes the fundamental parameter of the coating system from solvent-based to water-based or solvent-free thermoplastic coating. This parameter change eliminates the need for solvent evaporation and chemical curing, allowing the coating to be activated simply by heat and pressure during the printing process, thereby dramatically reducing processing time while maintaining ease of application.
Solution Approach 2:
The thermoplastic coating is designed to be applied in a ready-to-use form that does not require lengthy drying or curing processes. The coating material itself serves as a disposable, pre-prepared layer that activates immediately under printing conditions, eliminating the time-consuming solvent evaporation and curing steps associated with conventional coatings.
4Shape
If the tape surface follows the weave contours, then the fabric structure is visible, but the printed matter becomes discontinuous and unreadable
Solution Approach 1:
The invention segments the tape into distinct functional layers: the woven fabric substrate layer that provides structural integrity and the thermoplastic coating layer that provides a smooth, uniform printing surface. This segmentation ensures that the fabric texture remains visible as part of the overall tape appearance while the printing surface above it remains perfectly smooth and continuous, preserving print readability.
Solution Approach 2:
The composite structure of woven fabric substrate combined with thermoplastic coating creates a multi-functional material where the fabric layer maintains its visible texture characteristics while the coating layer provides a smooth surface for continuous, readable printing. The composite nature allows both fabric visibility and print clarity to coexist without compromise.
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 provides a durable, flexible, and smooth printing surface that adheres well to various fabrics, remains readable after washing, and eliminates the need for extra processing steps, ensuring continuous print patterns and improved ink adhesion.
Implementation Method 1
an extruded heat-seal polymer layer disposed on a second side of the extruded thermoplastic coating, opposite the first side. The extruded thermoplastic coating is bonded to the heat-seal polymer layer
Data Source
AI summary
A heat-sealable thermoprintable tape includes an extruded thermoplastic coating having a smooth printable surface on a first side, and an extruded heat-seal polymer layer disposed on a second side of the extruded thermoplastic coating, opposite the first side. The extruded thermoplastic coating is bonded to the heat-seal polymer layer to form the heat-sealable thermoprintable tape. A method of forming a heat-sealable thermoprintable tape includes providing a support layer having an open structure configured to support an extruded coating, applying a polyurethane coating onto a first side of the support layer and into open spaces of the open structure to form a top surface, and extruding a heat-sealable polymer onto a second side of the support layer opposite the first side and into the open spaces of the open structure. The polyurethane coating bonds to the heat-sealable polymer within the open structure of the support layer.