Fish Scale Protein Nylon Spinnability via PVA Mediator
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Solution Overview
Problem
The existing methods for producing collagen-based underwear fabrics face challenges with poor spinnability and activity loss of collagen during the spinning process, leading to inferior mechanical properties and performance.
Innovation Solution
A skin-friendly fish scale protein modified nylon-spandex fabric is developed through a process involving the blending of fish scale protein masterbatch with PA6 slices, using PVA-modified fish scale protein peptide powder to enhance compatibility and maintain collagen activity, and a specific weaving and finishing technology to create a double-sided sandwich structure with improved mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If pure collagen spinning solution is directly spun, then collagen content in fiber is high, but spinnability is poor and many broken ends are caused
Solution Approach 1:
The patent introduces PVA (polyvinyl alcohol) as an intermediary carrier to dissolve and transport collagen peptides. The PVA-collagen complex forms a stable spinning solution that maintains collagen integrity while achieving good spinnability. The PVA acts as a mediator between the collagen peptides and the spinning process, preventing direct damage to collagen during fiber formation.
Solution Approach 2:
The patent creates a composite spinning solution combining PVA and collagen peptides in specific ratios (PVA:collagen = 9:1 to 19:1). This composite material leverages the excellent spinnability of PVA to enable smooth fiber formation while incorporating collagen peptides to achieve the desired functional properties, resolving the contradiction between collagen content and spinnability.
2Ease of manufacture
If collagen is processed during spinning, then filaments can be obtained, but collagen activity is destroyed
Solution Approach 1:
PVA serves as a protective intermediary that allows collagen peptides to be processed during spinning without direct thermal or mechanical damage. The PVA-collagen complex structure protects collagen activity while enabling the spinning process to proceed, thus maintaining both filament formation and collagen functionality.
Solution Approach 2:
The patent optimizes processing parameters including temperature (150-200°C), humidity (65-75%), and PVA:collagen ratio (9:1 to 19:1) to create conditions where collagen activity is preserved. By carefully controlling these parameters, the patent achieves filament formation while maintaining collagen's biological activity and functional properties.
3Ease of manufacture
If collagen spinning solution is processed to improve spinnability, then continuous filaments can be formed, but mechanical properties deteriorate
Solution Approach 1:
The PVA-collagen composite material provides both good spinnability and improved mechanical properties. The PVA matrix creates continuous filaments with excellent processability while the embedded collagen peptides contribute to tensile strength and elasticity, achieving a balance between manufacturability and mechanical performance.
Solution Approach 2:
The patent optimizes processing parameters including temperature (150-200°C), humidity (65-75%), and drawing ratio (1.2-1.8) to produce filaments with superior mechanical properties. These parameter optimizations ensure that the spinning process creates continuous filaments while maintaining or improving the mechanical strength and elasticity of the final product.
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 effectively enhances the mechanical properties, maintains collagen activity, and improves spinnability, resulting in a fabric with enhanced break strength, elongation, water resistance, and biocompatibility suitable for knitted and woven fabrics like underwear and yoga wear.
Implementation Method 1
adding a boric acid solution dropwise so that the PVA crosslinks with and wraps the fish scale protein peptide powder
Implementation Method 2
adding fish scale protein masterbatch and PA6 slices in proportion to a screw extruder, and then successively carrying out melting
Implementation Method 3
successively carrying out melting, extruding, spinning, cooling, oiling and winding
Data Source
AI summary
The invention relates to a skin-friendly fish scale protein modified nylon-spandex fabric and its processing technology. The fabric is made of fish scale protein nylon DTY and spandex by weft knitting. The spinning process of the fish scale protein nylon DTY includes the steps of: sequentially carrying out spinning, cooling, oiling and winding on fish scale protein masterbatch and PA6 slices to obtain POY; and then post-processing the POY to obtain the fish scale protein nylon DTY. According to the invention, the fish scale protein masterbatch and the PA6 slices are blended and melt-spun to prepare the fish scale protein nylon DTY, and through special treatment, the PVA crosslinks with and wraps the fish scale protein peptide powder; and then freezing, thawing and crushing are carried out repeatedly to obtain porous PVA-modified fish scale protein peptide powder. On one hand, PVA has good compatibility with the PA6 slices. On the other hand, PVA wraps the fish scale protein peptide powder. In this way, the activity of the fish scale protein can be prevented from damage during the spinning and melting process, the original good antibacterial drying, moisture absorption and moisturizing properties and biocompatibility of the fish scale protein can be maintained and elongation at break can be further enhanced and the spinnability can be improved greatly.