Starch for Paper Industry and Textile Sizing: Applications, Benefits and Choosing the Right Grade

Author : michael jackson | Published On : 31 Oct 2026

Starch plays an important role in manufacturing products we use every day, from packaging materials and printing paper to woven fabrics. Although it originates from natural sources such as corn, tapioca, potato and wheat, its industrial applications require carefully selected properties.

Choosing the right starch for paper industry applications can improve paper strength, surface quality and production efficiency. Similarly, working with experienced textile sizing starch manufacturers helps textile businesses select suitable formulations for yarn protection, weaving and fabric finishing.

At Santosh Starch Products Limited, specialty starch solutions are developed for industries with different processing and performance requirements. Understanding how these starches work helps manufacturers make informed purchasing decisions.

What Is Starch for Paper Industry Applications?

Industrial starch is a carbohydrate-based material used in papermaking to improve strength, bonding and surface characteristics.

Paper manufacturers use native and modified starches at different production stages, depending on the required paper grade and processing conditions.

Three important applications include:

• Wet-end addition: Certain starches help improve fibre retention and bonding during papermaking.

• Surface sizing: Starch is applied to the paper surface to improve strength, printability and resistance to liquid penetration.

• Coating and binding: Suitable starch formulations support pigment binding and surface performance in coated paper products.

The appropriate starch depends on viscosity, solids concentration, processing temperature, paper composition and manufacturing equipment.

For example, kraft paper manufacturers may prioritize strength, whereas printing paper producers may require controlled surface properties for consistent ink application.

How Does Starch Improve Paper Manufacturing?

Starch contributes to papermaking by strengthening interactions between fibres and modifying the characteristics of the finished sheet.

Its effectiveness depends on the formulation, application method and operating conditions.

Improving Paper Strength

Starch can improve fibre bonding, helping manufacturers produce paper with suitable strength for handling, converting and packaging.

This is particularly relevant for kraft paper, corrugated packaging and paperboard, where mechanical performance is important.

Supporting Surface Sizing

Surface sizing starch forms a controlled layer on paper, helping improve surface integrity and printing performance.

The selection of starch viscosity and application conditions influences penetration, pickup and the resulting paper characteristics.

Enhancing Production Consistency

Selecting a suitable starch grade can support predictable preparation and application.

However, consistent results also depend on dosage, temperature control, water quality and compatibility with other papermaking chemicals.

Manufacturers should therefore evaluate starch performance under their actual mill conditions rather than relying on product specifications alone.

Specialty Starch Solutions for Different Paper Applications

Not every paper manufacturing process requires the same starch formulation.

Santosh Starch offers specialty products across kraft paper, specialty paper, duplex paper and corrugation applications.

Its published product portfolio includes:

Santo-Size Series: Specialty starch formulations for paper applications, including grades developed for different viscosity and strength requirements.

Santo-CAT: A wet-end cationic starch designed for paper manufacturing applications.

Santo-BOND: A specialty starch range associated with paper bonding and printability applications.

The company also offers products for corrugation, paper bags and printing-related requirements.

Choosing between these products requires consideration of the manufacturing process, target performance and available technical specifications.

For manufacturers, requesting a suitable product sample and discussing application requirements can help narrow the selection.

What Do Textile Sizing Starch Manufacturers Provide?

Textile sizing starch manufacturers supply starch formulations used to protect yarn during weaving and support specific finishing requirements.

During weaving, yarn is exposed to repeated friction, tension and mechanical movement. Sizing applies a protective film to improve handling and reduce damage during processing.

An effective sizing formulation should provide suitable adhesion, flexibility and film characteristics without creating excessive stiffness or processing difficulties.

Starch-based sizing agents are commonly considered for cotton and certain blended yarn applications, although formulation requirements vary significantly.

The choice depends on yarn count, fibre composition, loom speed, sizing equipment and the desired weaving performance.

For textile manufacturers, the objective is not simply to apply more starch. It is to achieve suitable yarn protection while maintaining efficient processing and manageable desizing requirements.

Key Benefits of Starch in Textile Sizing

Appropriate starch formulations can contribute to several aspects of textile processing.

Yarn Protection

Sizing forms a protective film around yarn, helping reduce friction-related damage during weaving.

This can be particularly useful where yarn experiences substantial mechanical stress.

Improved Weaving Performance

A properly formulated sizing solution may help reduce yarn breakage and support stable weaving operations.

Results depend on formulation, yarn properties and machine settings.

Controlled Film Formation

Starch viscosity and film characteristics influence how evenly the sizing material is distributed across the yarn.

Manufacturers must balance adhesion, flexibility and removal requirements during subsequent processing.

Compatibility With Finishing Processes

Some textile operations require efficient removal of sizing materials before dyeing or finishing.

Selecting suitable starch and desizing procedures helps prepare fabric for later treatment stages.

Santosh Starch Solutions for Textile Applications

Santosh Starch Products Limited supplies specialty starch products for textile manufacturing and sizing applications.

Its textile portfolio includes Santo-TEX, described as a thin-boiling starch for sizing and finishing, and Santo-SHOT, a one-shot sizing solution for sizing bottoms and denim fabrics.

The portfolio also includes Santo-JET and Santo Size T.

These product categories illustrate why textile manufacturers benefit from evaluating starches according to their intended applications rather than choosing a single formulation for every production line.

Before selecting a product, buyers should discuss yarn characteristics, machinery requirements, preparation methods and desired performance with the supplier.

How to Choose the Right Industrial Starch Manufacturer

Choosing an industrial starch supplier involves more than comparing product prices.

Manufacturers should evaluate technical suitability, consistent quality and the supplier's ability to explain application-specific requirements.

Important considerations include:

1. Product suitability: Confirm that the starch grade matches your manufacturing application.

2. Technical specifications: Review viscosity, moisture content and other relevant product parameters.

3. Application support: Discuss preparation, dosage and processing compatibility.

4. Sample evaluation: Conduct production trials before making substantial changes.

5. Supply requirements: Confirm packaging, order quantities and delivery arrangements.

Santosh Starch Products Limited, based in Ahmedabad, Gujarat, has a product portfolio covering paper, textiles, adhesives, food and other industrial applications.

The company's experience across multiple sectors provides manufacturers with a range of specialty starch products to evaluate for specific operational needs.

Frequently Asked Questions

Q1. What is starch used for in the paper industry?

Starch is used to improve paper strength, surface sizing, fibre bonding and coating performance. Different grades serve wet-end, surface treatment and binding applications. The correct formulation depends on paper type, production equipment and required finished-product characteristics.

Q2. Which starch is suitable for kraft paper manufacturing?

Kraft paper manufacturers commonly consider specialty modified starches designed for strength improvement. Suitable viscosity, application conditions and processing compatibility are important. Product selection should be based on the paper grade and validated through production trials.

Q3. What is textile sizing starch?

Textile sizing starch is a starch-based material applied to yarn before weaving. It creates a protective film that helps manage friction and mechanical stress. Different formulations are selected according to yarn composition, weaving requirements and subsequent finishing processes.

Q4. What is the difference between native and modified starch?

Native starch is obtained from plant sources without chemical modification. Modified starch undergoes processing to alter selected functional properties, such as viscosity, stability or application performance. The appropriate type depends on the industrial process and intended use.

Q5. Can the same starch be used for paper and textile manufacturing?

Some starch sources serve both industries, but the required formulations may differ. Paper applications emphasize properties such as fibre bonding and surface strength, while textile sizing requires suitable film formation, yarn adhesion and weaving compatibility.

Q6. How should manufacturers evaluate textile sizing starch suppliers?

Manufacturers should assess product specifications, technical support, sample availability and suitability for their production equipment. They should also evaluate sizing performance through controlled trials and confirm that the formulation meets relevant downstream processing requirements.

Q7. Where can manufacturers enquire about specialty starch products in India?

Manufacturers can contact Santosh Starch Products Limited in Ahmedabad, Gujarat, to enquire about specialty starch solutions for paper and textile applications. Buyers can request product information, discuss technical requirements and submit quotation enquiries through the company's official website.

Conclusion: Selecting the Right Starch for Industrial Performance

Choosing suitable starch for paper industry applications involves understanding paper strength, surface sizing, viscosity and processing requirements.

For textile operations, experienced textile sizing starch manufacturers can help businesses evaluate formulations that support yarn protection and weaving performance.

Santosh Starch Products Limited provides specialty starch solutions across both industries. Manufacturers seeking an appropriate grade should compare technical specifications, request samples and assess product performance under their operating conditions.

Contact Santosh Starch Products Limited

For product specifications, sample requests and industrial starch enquiries, contact:

Corporate and Registered Office:
Santosh House, Near Navrang Six Roads, Navrangpura, Ahmedabad – 380014, Gujarat, India

Manufacturing Unit:
55/78 NIDC Estate, Lambha Road, Narol, Ahmedabad – 382405, Gujarat, India

Phone: +91-79-26651800 / +91-79-26651900

Email: [email protected]

Business Hours: Monday–Saturday, 9:00 AM–6:00 PM

Website: https://santoshstarch.in/

Product Information: https://santoshstarch.in/products/

Contact: https://santoshstarch.in/contact-us/

Company details, product ranges and contact information verified against Santosh Starch's official website.