What is Dyeing In Textiles And What Are its Types And Processes?

admin Mar 8, 2023

Dyeing is a process that adds colour to textiles. The most common dyes are available as liquids, pastes, or powders. Dyeing is used to create a variety of colours, including natural dyes such as madder and indigo, and synthetic dyes such as those used in paints and textile printing.

The dye is mixed with the textile material to be coloured. The mixture is then applied to the textile object in a manner that allows the dye to penetrate the fibres. The dyed fabric can then be washed to remove any excess dye, usually with hot water and soap.

Dyeing in textiles refers to the process of adding colour to the fabric. This is typically done by immersing the fabric in a solution containing dyes, which are absorbed by the fibres. The process of dyeing can also be used to change the colour of fabric that has already been produced or to create patterns or designs.

What is The Textile Dyeing Process?

The textile dyeing process is an important step in the production of textile materials. In this process, different coloured dyes are mixed and applied to the fabric to create the desired colour. There are some different types of textile dyes, each with its own set of properties and requirements.

• Preparation:

The fabric is prepared for dyeing by washing it to remove any dirt or impurities, and by scouring it to remove any finishing treatments that might interfere with the dyeing process.

• Dyeing:

This step involves immersing the fabric in a dye solution. The dye can be applied using various methods, such as immersion, padding, spraying, or printing. The fabric is usually agitated to ensure even dye uptake.

• Fixation:

This step involves setting the dye into the fabric so that it doesn’t bleed or fade during washing. This is typically done through chemical reactions or heat.

• Rinse:

The fabric is then rinsed to remove any excess dye or chemicals used in the fixation step.

• Drying:

The fabric is dried after rinsing to remove any moisture. This step can be done using a variety of methods, including air-drying, machine-drying, or tumble-drying.

• Finishing:

The final step of the dyeing process involves any necessary finishing treatments, such as softening, starching, or pressing the fabric.

Types Of Textile Dyeing

Many types of textile dyeing can be used to create unique and colourful fabrics. Each type of dye has unique properties that can be used to create specific effects on the fabric. Here is a look at some of the most common textile dyeing types:

• Direct Dyeing:

Direct dyeing is the process of applying dye directly to the fibre or fabric in an aqueous solution. It is used for cellulose fibres like cotton, rayon, and linen.

• Fiber Reactive Dyeing:

Fiber-reactive dyes are chemical dyes that bond directly to the fibres, creating a permanent bond. This type of dyeing is typically used on cellulose fibres such as cotton and linen.

• Acid Dyeing:

Acid dyes are water-soluble and are applied at low pH, usually in an acidic dye bath. They are used for protein fibres like wool and silk, as well as for some synthetic fibres.

• Basic Dyeing:

Basic dyes are water-soluble and are applied at high pH, usually in an alkaline dye bath. They are used for synthetic fibres like nylon and polyester.

• Mordant Dyeing:

Mordant dyeing is a two-step process that involves first treating the fabric with a metal salt, called a mordant, and then immersing it in a dye bath. The mordant helps fix the dye to the fibres, creating a permanent bond.

• Solvent Dyeing:

Solvent dyeing uses a solvent to dissolve the dye and transport it into the fibres. The solvent evaporates after the dye has been absorbed, leaving the dye in the fibres. This type of dyeing is often used for synthetic fibres like polyester and nylon.

Conclusion

Dyeing textiles is a process of adding colour to fabric using various methods such as screen printing, direct dyeing, reactive dyeing, and others. The choice of dye and method of application depends on the type of fibre, desired colour, and intended use of the fabric. Proper selection of dye and proper execution of the process is important to ensure the color-fastness and durability of the dyed fabric.

What’s the Difference Between Dyes and Pigments? A Complete Overview

admin Mar 1, 2023

Pigments and dyes are used to add colour and texture to different polymer clays. These are available in a wide variety. Both colourants are majorly used in textiles, cosmetics, plastics, and the painting industry. These are used to make products more attractive. 

One major difference between dyes and pigments is their solubility in water. Both colourants have been used for a long time now. Dyes and pigments can be compared to sugar and sand to understand the basic solubility of the two. Another major difference between the two is the scattering of light; pigments allow the light to scatter and are opaque. At the same time, dyes don’t allow the light to scatter and are transparent.

Pigments require a binder to dissolve in water, while dyes tend to be naturally soluble. The textile and paper industry mainly uses dyes. And cosmetic, paint, ink, and plastic industries rely on pigments.

Dyes are mostly organic and are obtained from flora and fauna. Due to this, dyes are expensive and aren’t suitable for bulk use. On the other hand, pigments are chemically synthesized substances that are comparatively cheap and easy to use for a variety of purposes. Dyes and pigments mainly became popular in the 1860s, and now the properties of these colourants are altered to make them more sustainable and resistant to heat and light.

Differences in how dyes and pigments work on different surfaces.

Dyes and pigments work differently on different surfaces. Here is an easy-to-understand example. Suppose we are working with acrylic paint and a marker on paper. The permanent marker is a dye that will soak into the fibre. The acrylic paint will form a layer on the paper. This is because acrylic paint is a pigment, and they tend to add layers to the material, which is why they also tend to protect the products.

Types of Dyes and Their Uses in Different Industries

Dyes are available in a wide range these days. Different type of dyes is used in different industries. Like food industry tends to use organic dyes to add colour to food and beverages. Synthetic dyes are mainly used in the textile industry to add colour to fabrics.

Dyes are usually long-lasting and have bright colours than pigments. Some different types of dyes are:

• Fabric dyes
• Stamp Pad dyes
• Permanent marker Dyes

Characteristics and Applications of Pigments

Pigments are usually inorganic because they require a water binder. There are both types of pigments available organic pigments and inorganic pigments. But chemically synthesized pigments tend to be more long-lasting, resistant to heat, and provide a wide range of colours.

Pigments are majorly used in the cosmetic, paint, and ink industries. These are more stable than the Dyes. Pigments are also widely used for coating products and walls.

Usage and Selection of Dyes and Pigments in Different Industries.

Both the dyes and the pigments are widely used substances in several industries. With advancements in technology, multiple shades and colours are available in both substances. Choosing the right color depends on various factors like light fastness, durability, type of fabric, base, and color. Hope the above information helps you understand the difference between pigments and dyes.

Also read,

What Are Pigment Dyes? A Comprehensive Guide

Azo Dyes: Properties, Uses, and Synthesis | Comprehensive Guide

Azo Dyes: Properties, Uses, and Synthesis | Comprehensive Guide

admin Feb 27, 2023

What is an Azo Dye?

Azo dyes are organic compounds that belong to the functional group (N=N). These are one of the most critical colourants in the textile industry. Azo dyes are also known as ice or magic colours, as they need a shallow temperature. These are used for several purposes, including colouring foods, candies, cosmetics, and beverages. These are available in different forms. One of the most significant subgroups of synthetic dyes is these azo dyes. Because aromatic rings are present, these dyes are highly coloured dyes.

History of Azo Dyes

Azo Dyes have been used for the past few years. Direct Azo dyes are the easiest to apply. These direct dyes contain the chemical components that make them water soluble and can be easily absorbed by different materials. In 1884, the first Azo dye, Congo red, was used, which is now replaced by other chemically synthesized dyes that are more resistant to light and heat.

Chromium and copper are the most common metals used in these dyes. Different metals are used to alter the properties of these dyes and make them suitable for various purposes. These pocket-friendly, long-lasting, and eco-friendly dyes are the best dyes with a wide variety of choices for several industries.

Synthesis of Azo Dyes

Various reactions of Naphthylamines and Naphthols are combined to produce these dyes. These dyes are made in the following two steps:

• Synthesis of aromatic diazonium ions from an aniline derivative.
• Diazonium salt is coupled with an aromatic compound.

What are Azo Dyes used for?

Azo dyes have a variety of uses and are used by multiple industries.

• These are widely used in the pharmaceutical industry for adding colour to medical types of equipment.
• These dyes play a major role in the cosmetic industry.
• The textile industry uses the Azo dyes to create different shades and add colour to different materials and fabrics.
• These can be used as complexometric indicators as these undergo a colour change in the presence of metal ions.
• Azo Dyes are used as medicine to treat insomnia.
• Thermal transfer printers also use the Azo dyes.
• Azo Dyes are great food colourants. Tartrazine is a lemon-yellow colour azo dye used to add colour to food.

Features of the Dye

• They possess a high fastness ability.

• These are used to dye the cellulosic material.
• Coupling these dyes is necessary for producing good colours. And coupling is done in an alkaline solution.
• It has admirable bright shades.
• The final colour of the dye is produced after immersing the material for a few seconds. Therefore, it has a fast application.
• These dyes are suitable for small-scale industries.
• Azo Dyes are effective and less expensive.
• The dye’s environmental impact is low, making it a safe option.
• It has a wide range of colour options.
• These dyes are insoluble in water.

These dyes are often produced by developing countries to cater to the growing demand and add variety to several market products.

What Are Pigment Dyes? A Comprehensive Guide

admin Feb 24, 2023

Understanding Pigments

Pigments are materials that provide different colours and textures to products. One of the simplest ways to understand What are pigments is by looking at the leaves. The green colour of the leaves is due to the presence of the green colour pigment. Pigments are the colourants used to add colour to various products like food, plastic, fabrics, etc.

Difference between Pigments and Dyes

One major difference between pigments and dyes is their solubility in water. Dyes are soluble in water, but pigments don’t aren’t. Also, the pigments require a blinder to help them dilute in water. Pigments absorb certain wavelengths of light and change the way light transmits through different products. The stability of pigments is great and is easily absorbed by different surfaces. 

Pigments have several uses and are majorly used in industries like cosmetics, paints, inks, and plastics. There are two types of pigments based on the formulation organic and inorganic. 

Organic Pigments

These have been used for centuries now and these are naturally occurring pigments. These pigments are made of minerals and metals that add provide colour to them.

 The strength of the colours provided using these pigments is relatively less. Organic pigments are available in limited colours and shades. They tend to become dull and fade away when exposed to heat and light.

Organic pigments are used less than inorganic pigments because these are expensive. Some synthetic organic pigments are created using coal tars and other petrochemicals. These are much safe and more eco-friendly than inorganic ones. 

These pigments are transparent and have a variety of bright colours. 

Inorganic Pigments 

These are widely used in industries due to their light fastness and wide range of shades. These are opposite to organic pigments and are prepared chemically in labs. Inorganic pigments are also known as synthetic pigments.

These are less soluble in water and are opaque. These are less expensive than organic pigments. They are best suited for plastic industries. One of the major drawbacks of using inorganic pigments is their hazardous impact on human health and the environment.

Unlike organic pigments, inorganic colourants have excellent resistance and the colour does not fade when exposed to heat and light. A wide variety of bright and pastel colours is another key aspect of using inorganic pigments. Since these are chemically created pigments, it becomes easy to alter colours and get what the manufacturer wants. 

Organic Vs Inorganic Pigments

Both the inorganic and the organic pigments are different and are used for a variety of purposes. When it comes to choosing the best pigment between the two, do check and compare their properties and consider the material these are to be used on. Here are a few things to consider before choosing the best pigment.

• Colour vibrancy
• Resilience to heat and light
• Opaqueness 

Market Trends

Both types of pigments have a large international market. The inorganic pigment market has slowed down a bit due to its harmful nature and ill impacts on the environment. If you wish to buy an eco-friendly colourant, getting organic pigments is the best choice. 

What is Dyes: Different Types Of Dyes

admin Feb 21, 2023

What is Dyes

A dye is used to add colour to different materials. Colours have always been fascinating and a big attraction for humans. Two major types of dyes are natural and synthetic. These are used to impart colour to utensils, textiles, leather-based products, and even food items.

There are separate dyes for colouring different products. Dyes differ from pigments which are finely grounded solids like paint, ink or blended with other products. Dyes are organic compounds, unlike pigments which are inorganic compounds. 

These days, everything is available in multiple colours and textures. And this is possible due to the wide variety of dyes.

Different Types of Dyes are :

Basic Dyes

These dyes are synthetically produced and are insoluble in water. These are also known as cationic dyes. All the shades of these dyes are extremely bright and have a good retention period. Basic dyes are relatively cheap and are used to add colour to acrylic fibres. These have a good affinity for synthetic materials.

Vat Dyes

Vat dyes are made using different plants and are also known as indigo dyes. Vat dyeing is comparatively an expensive process. Vat dyes aren’t directly used to add colour to the substance instead a process called vatting is used when using these dyes.

These dyes are insoluble in water and are made to dissolve in water by the process of vatting. The wet fastness of the dyes is great but rubbing fastness isn’t good. Vat dyes have a very small particle size. These are available in limited shades and colours as compared to other dyes. Vat dyes are usually used by experts as it has a long dyeing process.

Direct Dyes

These are soluble in water and used to dye cellulose materials like cotton materials. Usually, dyeing is done in alkaline conditions when using these types of dyes. But all the materials dyes using this type of dye require after-treatment and care to improve the shade of the dye. Direct Dyes have great fastness properties. These dyes are extensively used in the textile industry.

Acid Dyes

These are often used for colouring the protein fibres like wool, silk, nylon, etc. These dyes are highly soluble in water. These aren’t suitable for cellulosic material. Acid dyes have a good dye fastness property and are effective for colouring leather, and medical products. These are great for the food industry too. These are also used to create inks like printer inks, ball pens, ink for markers, ink pads, etc.

Synthetic Dyes

These are man-made dyes that are produced chemically. Their colours and shades are available in a wide range. These are used in multiple industries as they are comparatively inexpensive and easy to use. It is harmful to both environment and the human body. But still, the use of these dyes is increasing day by day. These chemical compounds are soluble in water. Etp is a must-required process for using these dyes.

Reactive Dyes

Reactive Dyes are best suited for cellulose, protein, and polyamide fibres. These are easy-to-use dyes as they are available in multiple forms. These are soluble in water and have good light-fastness properties.

All the reactive dyes are available in bright colours which makes them good for the textile industry. These Reactive dyes are comparatively cheap and good for bulk use. These have a great electron arrangement and provide protection against UV rays.

Solvent Dyes

These are modern dyes and are being widely used by the upcoming textile mills. Solvent dyes are non-toxic, non-flammable, and non-corrosive dyes. These dyes are convenient to use and take less time to add colour to the fibres and polymers.

These also possess high wettability. One major drawback with these dyes is their solvents are often expensive, so bulk use is difficult. Solvent dyes are available in a wide range and are great substitutes for harmful traditional dyes.

Food Dyes

These are the artificial colours added to the foodstuff to make it attractive. Food dyes are widely used these days. They are available in various forms like pastes, liquid colours, gels, and coloured powders. These food dyes are used to restore the colour of the edible which is lost due to light, heat, and storage.

Food dyes must be used carefully as excessive food colourants can cause various health problems. Food dyes are of two types natural and artificial. Natural food dyes can increase the nutritional value of food and make it attractive. Be careful and conduct proper research before picking the right food dye.

Fertilizer Dyes

Fertilizers or agriculture; dyes are one of the most commonly used dyes. These are used to add colour to fertilizers and alter their chemical composition. One major use of fertilizer dyes is that they help farmers identify the right fertilizers.

Different colours are added to different fertilizers and differentiate the fertilizers based on their chemical composition and quality. Coloured fertilizers add colour to the soil and help identify different crops.

These dyes also improve the quality and health of seeds and help them grow better and faster. Agricultural dyes protect crops from pesticides and fungi by forming a protective layer over the crops.

Seed Coloring Dyes

Seed colouring dye is used to add colour to the seeds which helps the farmers identify and differentiate seeds. Different types of seeds are coloured differently. Seed colouring is a traditional practice that is used to protect the seeds and facilitate plant growth.

Big seed brands have also adopted this method to make their seeds recognizable. Seed colouring is a great way to prevent the seeds from being damaged and differentiate them. Various seed dyes are available these days, try choosing a safe dye as this can impact the growth of the plants and crops.

All the above-listed dyes are some of the different types of dyes used for a variety of purposes. All of them have their pros and cons. One must choose the most suitable dye for them depending on the type of product and use. 

Paper Dyes 

Paper Dyes are especially formulated to color colorful paper products, furnishing vibrant and invariably achromatic. These dyes access paper filaments effectively without compromising strength or texture. They’re primarily water-answerable, allowing easy operation and quick drying. Paper dyes are used extensively in printing, packaging, and ornamental papers, yielding bright, durable colors that repel fading and maintain visual appeal over time. Their eco-friendly variants are gaining popularity due to environmental concerns. 

Acrylic Dyes 

Acrylic dyes are designed to color acrylic filaments, a popular synthetic cloth material. They offer excellent colorfastness for washing, light, and bruising, maintaining bright and pictorial tinges. These colorings chemically bond with the polymer structure of acrylic filaments, ensuring a durable achromatic. Acrylic dyes are generally used in apparel, upholstery, and outdoor fabrics, where resistance to environmental factors is pivotal for life. Innovations continue to improve their sustainability and performance. 

Plastic Dyes 

Plastic dyes are specialized colorings used during the manufacturing of plastic products. These colorings must repel high processing temperatures without demeaning or losing color intensity. They indeed ensure color distribution throughout plastic polymers such as polyethylene, polypropylene, and PVC. Plastic dyes enhance esthetics and can give fresh parcels properties like UV resistance and chemical stability, making plastics both functional and visually appealing. They are essential in producing colored plastics used in automotive and consumer goods. 

Azo Dyes 

Azo dyes are synthetic colorings characterized by one or more azo groups (-N=N-) connecting sweet rings. They represent the largest and most protean class of colorings, available in a wide diapason of vibrant colors. Habituated considerably in fabrics, leather, food coloring, and cosmetics, azo colorings are popular due to their fairly simple conflation and strong achromatic. Some azo dyes bear regulation due to implicit health and environmental enterprises. 

Frequently Asked Questions (FAQs) 

Q. What’s the difference between Dye and Pigment? 

Ans: – Dyes dissolve in detergents; Pigments remain suspended on shells. 

Q. Are natural dyes better than synthetic dyes? 

Ans: – Natural dyes are eco-friendly; synthetic dyes offer brighter, longer-lasting colors. 

Q. What are the main uses of Dyes? 

Ans: – Used in fabrics, plastics, inks, cosmetics, and food coloring. 

Q. How do dyes bond to fibers? 

Ans: – They form chemical or ionic bonds with fiber molecules.

Q. Why do some dyes fade or wash out? 

Ans: – Due to poor fixation, exposure to the sun, or harsh washing. 

Understanding the competitive vendor landscape of the global pigment markets

admin Feb 17, 2023

Across the world, the pigment market is characterized by organic, inorganic and speciality pigments. According to surveys, this market is poised to increase by 2022 and is currently worth nearly $ 26,598 million. The competition for high performance is geared towards Indian and Chinese vendors. They offer the best quality of pigments for a wide variety of industrial applications. Leading players in this segment adopt strategies to meet customer demands. In order to be a good supplier, it is important to understand the vendor landscape. A few vendors hold the key for a tight grip in this competitive market.

This blog explores reasons why Indian pigment makers score on the basis of diverse industrial parameters.

Segments of pigment producers

Global pigments market segmentation

Pigment producers from India have a distinct advantage against fierce competition due to performance and adherence to best practices for production. They cater to the needs of industries like paints and coatings, printing inks, plastics and construction materials. In order to understand the competition in global market, it is essential to know the key segments of this market. It is also important to note the parameters for competition which bring customers to Indian shores for their requirements.

Competition parameters

The Indian market producers have increased business by a volume of 133.52 million tons in the last few years. The demand for organic pigments is more and accounts for 58% of the production.

Source: India Dyes and Pigments Market Report and Forecast 2024-2032

Factors that position Indian manufacturers on frontlines

Indian pigment producers score because of its geographic location. Global customers consider it a more organized sector compared to China. For example, paint manufacturers require high-performance pigments to meet their customer demands. The most essential expectations are related to qualities like:

• Light fastness
• Weather resistance
• Stability towards heat
• Flexibility to produce the right blend of product
• Minimum downtime after sample approval
• Appropriate infrastructure for production and lab testing

Vendors from the sub-continent score high on all the above parameters. They recognize this need and manage internal challenges within the manufacturing hub. Hence, they meet the demands with a wide product portfolio. The technicians offer a myriad palette for daily and fast colors and special effects. Manufacturers having comprehensive testing labs to meet accurate demands as performance scores are. Being error free makes the product more viable when produced in bulk. Technical experts use the application lab for stringent tests so that the product behavior is simulated in real market situations. Ideal solution providers ensure that eventually the actual pigment product bring the same results as proven in the testing labs. Customers often return to the same pigment producer due this reason.

To have a long term hold over the markets manufacturers focus on:

• Quality of product after deliberate research and consultation with the customer
• Product testing is done in advanced labs
• Availability of product in market on time by understanding its limited lifecycle
• Security of supply across continents and logistics taken care by professionals
• After sales customer services
• Offering easily dispersible pigments used in applications for paints and coatings, printing inks and plastics.
• Recognizing color trends and advising customers to take advantage of it.

Flexible pricing factors add to the return on investment for meeting specific requirements.  With continuous adoption of latest technological processes, it makes sense to deal with experienced pigment producers from the Indian markets.

Consequences of colorants on plastic polymer properties

admin Feb 17, 2023

The dying manufacturing processes are ruled by synthetic polymers which have distinct properties. The plastic industry requires several methods and applications of colored plastics. There are several complexities that define the consequences of colorants on plastic polymer properties. In order to understand injection molded plastic parts, we need to understand the coloring practices used by manufacturers.

This information is an attempt to recognize the correct choice of colorants which can be either solvent dyes or pigments.

Prime focus on:

How to choose plastic colorants?

Injection molded plastics parts require various colorants. The polymers are often impacted by resistance towards UV rays or may even be responsible for breakage or bending. Therefore, material options need to be considered very carefully.  Suitability and characteristics are also affected by colorants. They also need to be compatible and the amount used is equally important. This is because different colors have different properties and it effects injection molded plastics in large way. Colorants can be solvent dyes or pigments. The later does not dissolve in the plastic but can be blended easily. They are ideal for transparent plastics where strong tints are required. Depending on the requirement the supplier is able to guide the client to make a choice. Colorants should be discussed ideally when the raw materials are being selected. Keeping the usage of the end product in mind there is also a need to check on durability. The manufacturer will also pay attention to environmental impact, capital costs and affordability.

As colorants effect polymer properties they should be decided early at the discussion stage. The following factors are crucial to keep in mind.

Process of inserting colors

This is done via compounding, masterbatching, dry blending or by surface coating. Each method has benefits. However, some colors impact the consistency and have variable costs. They impact the mechanical properties of the plastic.

Optimal color requirement

The polymer structure is defined by the colorant used. The amount used is vital. Anything more than 1-2% can be harmful and compatibility issues may arise. When more color is used the polymer structure itself is modified. This could harm the end product. Hence optimal color is done by experienced staff even during the trial runs in the testing labs.

Compatibility with polymer

This is an essential component from the supplier’s perspective.  If there is no basic compatibility between the polymer structure and the color being used, subsequent processes are ruined. Colors possess certain compounds that break down when heat is applied. If the color cannot resist the temperature the chemical compatibility is reduced. It becomes worse if other additives like a flame retardant is added.

Different colors produce different properties

When colors are used for transplant plastics, the results are quite different. Solvent dyes have a less toxic effect on the polymer structure. There are pigments used for opaque color tones and the end performance of the material may be modified. The manufacturer will need to run trials and various tests to check how different colors behave during molding. This is critical when the tolerance levels are stringent.

If you are looking for a supplier who will discuss these projections, it will add value to your basic requirements. All these factors clarify complexities related to colorant and effects on polymers.

Why are eco-friendly dyes trending in the global markets?

admin Feb 17, 2023

The disruption in the dyestuffs industry began two decades ago. With the advent of eco-friendly dyes, there is yet another adjustment – business towards Asian markets. Indian intermediates seem to emerge as popular suppliers for the global textiles and fabric sector. It boosts the viability of the fashion industry which dangles on processes of fabric creation to a large extent.

We put the spotlight on acid dyes manufacturing processes required for the textile sector. They are used globally for wool, nylon and silk.

Overview of trends in acid dyes

India has the best production quality for dying processes. Manufacturers have caught up with the trends even offering acid dyes for direct printing on various protein materials made of wool, viscose and silk.  There is nothing toxic about these eco-friendly dyes. These dyes have a classification depending on the characteristics they exhibit. These could be towards affinity to dying or the chemical structure.

The following graph depicts the 3 classes

Why global buyers are turning to Asian Dyestuffs Manufacturers?

India, in particular, is the current hub for Dyestuffs Production. Knowing fully well that there is a demand in the global market the manufacturers pay special attention to:

• Investment in extensive Research and Development for product creations
• Treatment of pollution vis-a-vis processes
• Capital investment and cost involved by Indian manufacturers

Why are eco-friendly dyes trending?

Various dying and finished processes have come into focus as demands for clothing constantly progress. Globally enhancement in this sector is pressurized by the fashion industry and the end consumer to make processes more environmental-friendly. People are more health conscious and prefer wearing fabrics that support the ecosystem and human resources involved in the manufacturing process. The use of biodegradable dyes does not impact the rivers and workers adversely. European manufacturers decided to modify processes much before Asian markets. But being an expensive proposition the trending demands of the textile industry have shifted towards Asian countries. The water wastage and treatment of pollution by manufacturers are keeping them in business. The thrust towards meeting demands also involves the cost-effective production of various classes of dyes.

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Best Practices Used by Asian Dye Manufacturers

• Adopting novel processes in manufacturing
• Usage of appropriate dyes for different industrial applications
• Investment in research and development
• Treatment of water pollution to keep workers and eco-system safe
• Meeting the demands of global clients promptly
• Helping them to produce fabrics that meet end consumer sensibilities
• New technologies are used to reduce wastage of water
• Apart from the capital investment meeting updated regulatory policies
• Timely delivery to clients

Indian manufacturers based in Gujarat and Maharashtra support the production of eco-friendly dyes and help their textile clients to compete globally. They now play an important role in supplying products all over the globe. Apart from producing good quality acid dyes a comprehensive portfolio also includes basic dyes, solvent dyes, direct dyes and reactive dyes.

Why is pigment critical for the ink and packaging industry?

admin Feb 17, 2023

As there is a high demand for, manufacturers dealing in high quality of inorganic and organic pigments are important. They provide customized solutions with high performing applications. The interaction of pigmentation with ink is related to the viscosity, texture, gloss, and flow. Manufactures have to pay attention to reproduction of color tones due to variable paper quality as the same is also required for the packaging industry.

Flexibility is the key to preparation of pigments for offset applications. The inkjet industry relies on solvent and water based inks with right choice of pigmentation. With global concerns over ethical processes, the shift is towards making a combination that complies with industry norms and also satisfies the customer.

Formulation accuracies

The dispersion of formulation pigments is downsized between 50 and 200nm (as per application). They need to be stable for particles to bond and absorb certain compounds. Reducing the particle size is a challenge due to high density. Manufacturers have to check the viscosity and surface tension which restrict ink properties. That is why pigment particles that bond edges are important. When preparing various solutions, it is important to understand the applications required by the customer.

The inkjet sector requires:

• Accurate dispersion for printing inks.
• Water-based inks for tints
• Solvent-based inks for transparency.
• Importance in packaging & labeling

Without the use of right pigment and inks, the packaging industry cannot have good brand quality or visibility. The main objective of the final formulation is to meet the end user’s requirement. The correct selection reflects on the bleed, heat and migratory factors. For example, liquid inks require a dry toner/press cake form. The dispersion quality determines its usefulness with versatile solutions for offset, gravure for publications, decorative and laminate inks.

Water-based inks for tints and transparency

Water-based inks are currently trending globally because of lesser impact on environment. The printing industry is adopting new methods for ethical packaging solutions. Manufacturers face challenges in creating pigments as water generates problems. With the use of anti-foaming agents, micro-bubbles are reduced to stop thickening of the ink. The customer’s demands can still be met with tinting, high gloss and transparency.

Solvent-based inks for uncoated surfaces

Different inks have various carriers and substrates. Hence, the main considerations for creating applications with solvent-based inks depend on:

• Surface tension configuration
• Print speed requirement
• Chemical compatibility
• End use of the application
• Compliances with industry regulations

A manufacturer will factor the above when testing and creating samples for customers. It will create pigment particle bonding with the ink. If the ink does not match the quality, it will ruin the design and purpose of the process. Uncoated surfaces also require effective solutions. Printing is done on paper, metallic surfaces, films, cellophane and plastic. Hence, to make the right choice, discussing the requirements is important. Manufacturers who use the best materials and are experienced in offering suggestions related to essential pigment coating are capable of delivering the best results.

Anti-Corrosion Pigments and Their Applications

admin Feb 17, 2023

The use of pigments can be dated back through the civilizations, which means that the use of pigments has found importance in a lot of different ways. In the more modern times, pigments are classified into organic and inorganic pigments. While there is a set of applications for organic pigments, on an industrial and commercial level, the use of inorganic pigments is much wider for different reasons. Among the different applications of products from inorganic pigment manufacturers, one of the most important applications is in the creation of protective coatings which help in making anti-corrosive surfaces. A lot of different products like pipes, structural support solutions, automotive paints and other such surfaces that are prone to corrosion and need to be protected, make use of protective coatings that use inorganic pigments as one of the ingredients.

In the making of anti-corrosive pigments the use of zinc chromate, zinc tetroxy chromate and zinc phosphate is most essential. In order to be able to find the right anti-corrosion pigment for the creation of protective coatings, your best bet is to look for the best chrome pigment manufacturers.

How the Anti-corrosion pigments for protective coatings work

Corrosion takes place because of continual chemical or electro-chemical reactions of metals with their environment. Metal products that are used in machines, processing, building etc. are highly prone to corrosion as they come in constant contact with materials that cause the phenomenon. The use of inorganic pigments for coating like molybdate orange or chrome yellow and ultramarine blue can prove to be useful in the creation of effective protective coatings to be used in anti-corrosive applications.

One of the most important ways in which the anti-corrosive pigments work is by physically keeping water and oxygen out and away from the reach of the surface. The pigments also provide pacifying ions that protect the surface over which they are applied, thereby keeping the surface safe from corrosion. Finally, alternatives in inorganic anti-corrosive pigments like Chrome Yellow help by creating an insoluble protective film over the surface to keep the surface protected from anodic reactions.

Properties of certain anti-corrosive pigments

It is known that certain pigments such as zinc phosphate provide greater durability and protective coat adhesion, which is why they are highly preferred in the creation of protective coating products such as paints. The type of pigment also works towards the creation of inorganic oxyacids which are effective inhibiting corrosive actions against the surfaces on which they are applied. Some anti-corrosive pigments are also great at pacifying anodic action, which means that they can effectively block out electro-chemical reactions.

It is safe to say that the use of inorganic pigments like the anti-corrosive variety is high in demand across a lot of industries ranging from chemical to manufacturing and even in the building and construction industry. However, when you need to ensure that you are able to get truly effective pigments for the creation of protective coatings, you need to place your trust in inorganic pigment manufacturers that are reliable and will offer you professional and precise solutions.