Multilayer Film with Random Network Strands for Slip Resistance
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Solution Overview
Problem
Current methods for producing textured polymeric films require unique patterned rolls or additional process steps, such as embossing or lamination, which are inefficient and costly.
Innovation Solution
A polymeric multilayer film structure comprising a random network of strands and connective regions, created through a blown film process using an annular die, which allows for the production of textured films without the need for patterned rolls or secondary processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional embossing or lamination processes are used to create textured films, then the desired surface texture and functionality are achieved, but the production complexity and cost increase
Solution Approach 1:
The film structure is segmented into multiple layers with distinct functions: the first and second polymeric layers provide structural integrity while the intermediate polymeric multilayer film provides the textured surface. This segmentation allows each layer to be optimized independently, eliminating the need for separate embossing or lamination processes.
Solution Approach 2:
The invention merges the structural function and texturing function into a single integrated film structure. The textured surface is created by forming the polymeric multilayer film with a random network of strands and connective regions having different optical densities, combining what were previously separate processes into one step.
2Manufacturing precision
If unique patterned rolls are used for each desired texture, then the specific texture or structure is achieved, but the manufacturing cost and equipment requirements increase
Solution Approach 1:
The polymeric multilayer film structure serves multiple functions: it provides the base film structure, creates the textured surface through its random network architecture, and controls optical properties through varying optical densities. This universal structure eliminates the need for specialized patterned rolls for different textures.
Solution Approach 2:
The invention controls the texture characteristics by adjusting parameters of the random network structure, such as the density and distribution of strands and connective regions, and the optical density differences. These parameter changes allow for different textures to be achieved through formulation and processing adjustments rather than changing physical equipment.
3Ease of operation
If additional process steps like embossing or lamination are used, then the desired surface properties are achieved, but the production time and efficiency decrease
Solution Approach 1:
The texturing is built into the film structure during the extrusion and formation process itself. The polymeric multilayer film is formed with a random network of strands and connective regions that create the desired surface texture and optical properties as an inherent feature, rather than requiring subsequent embossing or lamination steps.
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
This approach enables the efficient production of textured polymeric films with enhanced optical and mechanical properties, such as slip resistance, while reducing production costs and complexity.
Implementation Method 1
A polymeric multilayer film structure comprising a random network of strands and connective regions, created through a blown film process using an annular die
Data Source
Figure 1~2
Figure 3
Figure 3A
AI summary
Article comprising first and second continuous polymeric layers having at least one polymeric layer exhibiting a random network of strands and connective regions disposed between the first and second continuous polymeric layers. In some embodiments, the article is a tape and polymeric multilayer film having a slip resistant surface.