Technical Expertise

Key Factors for Perfect Sizing

Understanding the critical elements that determine sizing success in textile manufacturing

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Cohesive & Adhesive Strength

Total strength including elasticity of sized yarn to resist mechanical strains in weaving process.

Withstands dynamic stresses in axial and radial directions
Covalent bond formation with fibers
Increased binding force between yarn fibers
Resists tensing, bending, rubbing, and beating

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Fluff Binding

Critical for preventing yarns from clinging together, especially in high-density fabrics.

Essential for high-speed air jet looms
Enables smooth shedding in weaving loom
Suppresses protruding fibers on spun yarn
Significantly reduces hairiness

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Size Pickup (SPU)

The amount of size picked up by yarns, crucial for determining size recipe and mechanical conditions.

Pre-determined according to yarn/fabric construction
Enables optimal squeeze roll pressure setting
Ensures even distribution across yarn sheet
Critical for consistent sizing results

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Smoothness & Softness

Essential for high-count yarns in high-density fabrics, reducing friction during weaving.

Reduces friction upon mutual contact
Minimizes contact with loom elements
Provides lubricating and softening effects
Improves yarn running in loom shed

The Critical Role of Viscosity

Viscosity is a primary measure of size pickup, as other factors in pickup are typically constant. The size content or pickup of a warp depends on:

Properties of the sizing solution - measured by viscosity
Character of the material sized - fiber type and construction
Time of applications - duration of sizing process
The effect of the squeezing process - pressure and technique

Since items b, c, and d are normally constant in production settings, viscosity serves as a reliable measure of size pickup in the warp. This makes it invaluable for finding the optimal size formula for specific warps.

Our Sigma Size produces liquor with homogeneous and stable viscosity that remains consistent for up to 12 hours in storage tanks with indirect heating.

Sizing Guidelines & Best Practices

Optimize your sizing process with these proven techniques and recommendations

Size Cooking Conditions

Determine quality of size solution in terms of viscosity, particle size, and consistency. A good size solution begins with proper cooking processes.

Machine Conditions

Optimize size box temperature, squeeze pressure, draft, and dry cylinder temperature to determine final sizing quality.

Parameter Consistency

Maintain constant influential parameters: concentration, viscosity, temperature, throughput speed, and yarn tension.

Quality Optimization

Consider raw material composition, yarn properties, weaving machine type, and climatic conditions for optimal results.