Author Archives: hitesh12

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Ribbon Blender for Large-Scale Powder Blending, Paste Mixing, Vacuum Drying

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High Capacity Ribbon Blender

Built with up to 10000L working capacities, large-scale ribbon blenders are ideal for high volume production of powder blends, pastes, and slurries. These versatile blenders can also function as vacuum dryer and are engineered for fast mixing, convenient discharge, easy cleaning, and low maintenance.

1000L jacket type ribbon blender driven by a 15kw inverter-duty gear motor. It is equipped with a double ribbon agitator designed for center discharge through a pneumatically-operated dust-tight knife gate valve. Stuffing boxes are packed with braided Kevlar packing and include lantern rings for air purge when handling fine powders or abrasive materials. The two-piece cover features safety switches to prevent operation of the agitator when the cover is open. This jacket type ribbon mixer for heating or cooling the products while blending. Meanwhile, heating/cooling jacket is available for stainless steel or carbon steel. It could be customized by people’s requirement.

Abster has many standard and sanitary models available. Customization such as heating/cooling paddle agitator, vacuum capability, bag dump station, load cells, and recipe control are also offered.


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What is the definition of ribbon mixer?

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ribbon blenerAn industrial-strength machine, a ribbon blender is used to mix large amounts of material in many different industries. The blender gets its name from the thin, ribbon-shaped metal mixers that perform the blending.

Ribbon Blender Features


Most ribbon blenders consist of an engine to power operation, a large trough to hold the material and a ribbon agitator that does the mixing.

Ribbon Blender Identification

A ribbon blender’s agitator typically has metal ribbons, often in a double helical design, surrounding a central bar that extends the length of the trough. The ribbons are angled and balanced in such a way to continually move material within the container.

eHowFood & DrinkCooking & BakingCookwareWhat Is the Definition of Ribbon Blenders?
What Is the Definition of Ribbon Blenders?
X William Lynch William Lynch has been a freelance writer for the past fifteen years, working for various web sites and publications. He is currently enrolled in a Master of Arts program in writing popular fiction at Seton Hill University. He hopes to one day become a mystery novelist.

By William Lynch, eHow Contributor
Share Print this article An industrial-strength machine, a ribbon blender is used to mix large amounts of material in many different industries. The blender gets its name from the thin, ribbon-shaped metal mixers that perform the blending. Add this to my Recipe Box.

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How Do Ribbon Blenders Work? What Are the Parts of a Blender? Features
Most ribbon blenders consist of an engine to power operation, a large trough to hold the material and a ribbon agitator that does the mixing.

A ribbon blender’s agitator typically has metal ribbons, often in a double helical design, surrounding a central bar that extends the length of the trough. The ribbons are angled and balanced in such a way to continually move material within the container.

Mixing Powder
Quality Products to Process, Lift, Contain & Transfer Powder/Granules.

Ribbon blenders are used to mix a wide range of both dry and wet materials, including such items as cake mixes, cereal, cocoa, cosmetics, flavorings, gelatin, instant formula, medications, pet food, salad dressing and seasonings.

Due to the agitator’s unique design, a ribbon blender moves material inside the trough towards the discharge point, thoroughly mixing the contents without any dead spots.

Ribbon blenders come in a variety of sizes and capacities, with models designed to handle anywhere from as little as five liters of material all the up to 25,000 liters or more.

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#Best Sigma Kneader Mixer manufacturer

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#Best Sigma Kneader Mixer manufacture


This kind machine is mainly used in high viscosity product

——Chemicals Industry:

 Resins, Sealant, silicon rubber, glue/ adhesive, paint, dye, BMC/CMC, pigment,  plastics,  batteries. Tooth paste, Clay etc.

——Food Industry:

Bubble gum, dough, chewing gum,  soft candy,  cheese etc.


Medicines  &  Pharmaceutical materials.

Discharge Way:  Hydraulic tilt; Screw extruding ,Bottom valve.

Heating:  Steam heating, Thermal oil heating & Electric heating

Type:Normal type:  Pressure type & Vacuum type.

Material:  can be SS304,SS316 or carbon steel.

Rotation Speed:  can be controlled by frequency converter,or fixed.

Blades& Contact part:  will be fine polished

Capacity:  2-5000L

sigma kneader mixer

double blade sigma mixer

lab kneader mixer

Z Blade kneader Mixer

play dough Double Z Arm mixer machine 

Clay Dough Sigma Mixer

Z Blade kneader Mixer


The lab model Double Sigma Blade batch systems provide complete, homogeneous mixing, even in small quantities.


The mixing action is a combination of bulk movement, shearing, stretching, folding, dividing, and recombining as the material is pulled and squeezed against blades, saddle, and side walls. Continually new layers of material are compressed and folded over one another and are subjected to shearing forces.


Main features :

  • Wide range of sizes from 2-50 litre working capacity.
  • Adjustable blade arm rotation
  • Quick disassembly of the through-ends opposite the drive and blades for easy cleaning.
  • Stainless steel construction.
  • Simple installation – only a single power cable.
  • Stainless steel with sight-grid cover for product viewing during mixing.
  • Vacuum design available.



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clay kneading machine/ clay mixing kneader / sigma mixer

clay kneading machine/ clay mixing kneader / sigma mixer

200L hydraulic tilt z arm machine with vacuum/jacket heating kneader

Multi-Function Vacuum Kneader Machine

In the past, plasticine manufacturers need different dough mixer for different material’s production. When they were intended to expand the range of product varieties, they need to buy another mixer which they thought it’s not so economical.
In a view of this fact, we have researched and developed a new dough kneader that can be used for various Plasticine products’ manufacturing. Besides, it’s suitable to other industry too.


Kneader is widely used in high viscosity and high elastic-plastic material such as chewing gum, bubble gum, toothpaste, plastic, rubber, silicone rubber, dyes, pigments, inks, food gum base, pharmaceutical agents, architectural coatings, carbon, fiber, high viscosity sealant, neutral glass glue, aluminum silver paste, Pulp, cellulose, battery paste, silicone resin, cosmetics, neutral or acid glass cement, paper pulp, medicine, resin, plasticine, BMC/CMC and others industries.


Vacuum Kneader

Full volume


Brim trough size(L*W*H)


Trough material

Inner shell: Stainless steel#304 & 8 mm steel plate

Jacket: Carbon steel Q235 coated with heat resistant paint & 6 mm steel plate

Outer shell: Stainless steel & 1 mm steel plate

Heating method

Electric heating

Agitator shape

Sigma type

Agitator quantity


Agitator rotating direction

Opposite direction

Agitator Rev


Radial clearance between agitator and hopper inner surface


Axial clearance between agitator and hopper wallboard


Discharge way

Hydraulic tilt

Main motor power


Overall size(L*W*H)



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How to Improve Ribbon Blender Efficiency?

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How to Improve Ribbon Blender Efficiency?

Across the process industries, a wide range of powder blends are produced in a ubiquitous workhorse that is the ribbon blender. From seasonings and beverage mixes to pharmaceutical, chemical, plastic, and agricultural powders, a reliable method for solid-solid blending is at the core of production and the ribbon blender is a popular choice due to its efficiency and economy.


Ribbon Blender manufactrer

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blender ribbon
A ribbon blender consists of a U-shaped horizontal trough and an agitator made up of inner and outer helical ribbons that are pitched to move material axially, in opposing directions, and also radially. Agitator tip speeds in the range of 300 feet/min are typical.

Selecting a suitable ribbon blender for a particular application starts with bulk density. Bulk density determines if a standard or heavy-duty blender is required and, given a target batch size (weight), the bulk density defines the ideal blender model (capacities are normally listed in volume). Ribbon blenders are offered with optional features like heating/cooling jacket, vacuum capability, interchangeable paddle agitator, lump breakers, sanitary finish, and even wetted parts constructed from special alloys. More recently, new features have become available that are designed to maximize efficiency, blend consistency, and productivity. Ask your blender manufacturer about the following options:
how to make ribbon blender
• Scrapers welded to the spokes and ribbons. Scrapers having a close tolerance (around 1/8 in.) to the end walls significantly reduce the amount of materials that might tend to pack in the blender’s outermost areas. ‘Radiused’ trough corners further eliminate any dead spaces in the product zone.

• Clear view cover and shaft guards. The pictured ribbon blender features FDA-approved poly carbonate shaft guards and sections of the cover. The multi-piece cover is equipped with multiple ports for ingredient additions, lights, spray system, venting, and vacuum, which significantly increases ease of use and worker safety. Operators can safely monitor the contents of the blender and charge raw materials while the agitators are running. Without the need to stop agitation and open the covers at multiple intervals, cycle time is therefore optimized and unnecessary dusting issues are prevented.

• Air-purged mechanical shaft seals. Special seal arrangements such as air-purged mechanical shaft seals eliminates the risk of product leakage, preventing premature bearing or drive failure and shaft wear. Air purging creates a higher pressure inside the seal cavity, creating an air barrier that helps keeps material inside the trough and adds to the life of the wearable parts of the seal.

• Pneumatically-operated spherical disc valve. This style valve provides a large opening and minimizes dead space. Discharge connections can be customized to perfectly mate with your downstream material handling system.

• Custom PLC recipe controls. There are multiple benefits to applying PLC recipe controls to a blending process: batch-to-batch consistency, automated data logging, reduced operator error, faster changeovers, and longer service life, just to name a few. Recipes can be written and stored into memory, so that switching the batch protocol from one formulation to another takes only seconds, maximizing production time. Pre-programmed maintenance screens can help save equipment from downtime due to preventable maintenance issues, reminding technicians to check greases, seals, bearings, and other components after a certain number of run hours. In a customized control scheme, hardware can also be networked to existing systems that may require a degree of handshaking with other equipment in the overall process. SCADA systems, software programs, special protocols, and network concerns should all be addressed early into a project to ensure complete compatibility.
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Mixing of Silicone Rubber

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How to mix silicone rubber ?

the mixing of silicone rubber. Mixing of tough masses such as rubber require special equipment such as kneaders. These mixers need to be robust in construction and consume high power.

500L Silicone sealant Double Z Arm Extruder kneading mixer/Jacket cooling sigma arm kneading mixer

silicone sigma mixer


This kind machine is mainly used in high viscosity product Resins,Sealant,Silicon rubber,Glue/adhesive,Paint,Dye,  BMC/CMC,  high voltage insulating silicone rubber Sigma Kneader , Pigment,Plastics,Batteries,Tooth paste,Clay etc.


This machine comprises of a double ‘U’ shaped container welded and machined together inside which rotates two ‘Z’ shaped sigma blades in opposite directions. The clearances between the walls and the container are kept to a minimum to ensure maximum efficiency in kneading and mixing. The shafts of the sigma blades are fitted in bearing blocks which are each provided with roller bearings, steel glands/teflon rubber seals for smooth and leakless operations. The kneader is mounted on a sturdy base frame fabricated out of ISMC sections and are free from vibrations. For cooling and heating jackets are provided.Machine equipped with suitable capacity motor & gearbox decided as per characteristics of the product & process. Equipment is provided with Jacket arrangement for heating or cooling applications. We manufacture Sigma Mixer Kneader in capacity ranging from 5 liters up to 3000 liters.

Sigma Mixer Working Principle

Silicon compounding sigma mixer


Start the motor,add the material,after adding material,clean the foreign matter on the cylinder port.It takes Hydraulic Dumping up cylinder Discharge the material,it is rapid and clean to discharge.


1.Excellent sealing performance(copper sealing ring)

2.Simple installation-only a single power cable

3.No leakage of powder /oil-proof

4.Automatic and manual interaction

5.heating quickly, resistance of high temperature and corrosion, sanitation, environment-pollution-free, automatic heating without boiler and convenient to use etc

Related Articles

Sigma Mixer Application

Need a Mixer,

Contact us:

Contact Person: Mr HITESH GANDHI,
Phone – +91-79-227748046
Website: Sigma Mixer Machine

Tags: Dispersion Kneader, Industrial Mixer, kneader mixer rubber, kneader silicon rubber, Masticator Mixer, rubber mix, rubber mixer, silicon rubber, silicone gel, silicone sealant, silicone sealant injecton

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Drum Flaker Working Principle

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Introduction of Drum Flaker

Drum Flaker Dryer for moltan chemical

The purpose of flaking is to cool and solidify fusion liquid. The solidified product is shaped thin flake. The flake is capable of conveyance, safekeeping, transportation, and discharging.

Fusion liquid Flake Handling

There is a possibility that the product hardens in the pipe.○It’s possible to carry that by an ordinary conveyor. Safe Keeping×The fusion liquid is easy to oxidize.○Because it’s a solid,it’s difficult to deteriorate compared with liquid.Transportation×Fusion liquid hardens by heat-radiation. Re-heating. It’s possible to put the flake in a flexible container bag.Discharging×Heat-resistance is requested ofthe filling machine.○Because a handling is easy to do, the flake is easy to discharge.

Summary about Drum Flaker
The Dip feed type can’t dispose of high viscosity liquid. When viscosity liquid is inserted between the drum and the roll, the high viscosity liquid is stuck in drum. An adjustment in a clearance of the drum and the roll takes time and effort.There are 2 ways of supplying system of melting liquid. We recommend easy “Dip feed” of operation control.It’s possible to put the roll for “Top feed” as an option for high viscosity liquid.Dip feed typeTop feed type Leveling Roll Melting liquid is poured into the pan.This is standard way and operation control is easy compared with the Top feed type. You can put a liquid level sensor on the pan and adjust the provision.Melting liquid Leveling Roll Melting liquid3-2、Supply system of melting liquid

Cooling water is supplied inside the drum.Melting liquid is stuck in the surface of the drum,is cooled and solidify. The production thing which isSolidified is scratched with a scraper and it is taken

Various designs for different operating principles

In view of the large variety of products in the chemical and food industries, it will come as no surprise that also supplies an extremely varied range of machines. This variation is not only in design and operating principle, but also in materials used. PRODUCTS WITH POOR SOLIDIFYING PROPERTIES There are products that do not match the operating principles described on this page, such as products with neither good nor poor adhesion properties, but with poor solidifying properties instead. For those situations, . The surface can also be furnished with special

(dovetail-sectioned) grooves for products with poor adhesion properties.THE DRUMS MATERIAL The drums are mostly made of stainless steel. Besides the choice of many types of stainless steel, chromium-plated, Hastelloy, or cast iron drums are also possible. The exact choice will depend on your product, the work site environment, available space, and the process to be performed. The result is a durable drum with high dimensional stability and uniform heat distribution over its entire surface.



DIP FEED products with low viscosity and good adhesion properties. The rotating drum dips directly into the melt contained in a heated pan under the drum. A film of product solidifies immediately on the drum surface during its contact with the melt. In addition, a thin layer of liquid adheres to the solid layer, passes out of the pan and solidifies during completion of the drum revolution. Among the products processed on this type of drum flaker are phtalic anhydride, caprolactam, fatty acids, bisphenol, naphthalene and DMT.

BOTTOM DIP ROLL A heated applicator roll is located under the drum and dips into the melt. The film of liquid melt that sticks to the applicator roll is transferred to the cooling drum and solidifies. For products with good adhesion to metal surfaces and low to moderate viscosities, flake thickness may be controlled between certain limits. Applications are flaking of va

OVERHEAD APPLICATOR ROLLS For accurate control of end product thickness and shape, an internally heated applicator roll is located above the cooling drum. The melt is fed into the nip between the applicator roll and the drum. Contact with the heated roll ensures that the product remains liquid in the feeding system. Heated endplates prevent leakage of the melt to the sides both during applicator roll gap setting and thermal expansion. A film of melt passes through the gap between the roll and the drum, sticks to the cold drum, and solidifies. For products showing poor adhesion to metals and moderate to high viscosities, flake thickness may be controlled accurately through the gap setting mechanism of the applicator roll. Applications can be found for example in processing of soaps, stearates, and fatty acids


Fine chemicals applications Fine chemicals are complex, single, pure chemical substances, produced in limited quantities in multipurpose plants in multi step batch chemical or biotechnological processes.


The main demands set by the chemical industry to suppliers of equipment are a high safety standard, maximum plant operating time, the economic use of energy, and competence in problem solving.  drum flaker can be used for solidification and flaking of various fine chemicals. For industrial implementation, some product properties must be investigated under real process conditions. This can be arranged in our pilot plant.

APPLICATIONS• Fatty acids• Oleochemicals• Phtalic anhydride• Polyethylene glycols (PEG)• Maleic anhydride• Calcium chloride• Caprolactam• Resins• Bisphenol A• Sulphurs

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Essential Oil Steam Distillation Plant

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Essential Oil Distillers is suitable for the extraction of various flowers and leaves which contain essential oil. It adopts water vapor distillation apparatus for water distillation method and water proof distillation method, so the extraction of plant volatile component is effectively, this equipment is suitable for enterprises to set up production near the plant origin place.

Essential Oil Distillation Plants

The equipment is new, multi functional and multipurpose plant essential oil extraction unit. the equipment can collect the plant essential oil, aromatic plants, and other effective ingredients efficiently.

Features and advantage:
Oil extraction rate is very high
Adapt to various heating methods
Machine structure can be done according to customer requirements
This equipment is made of SUS304 stainless steel with special frame.
It has Special condenser design which can extract the oil efficiently.

Essential oil distiller working process and working principle:

Essential Oil Distillation Plants
(a) water vapor water distillation
1) of the material into the extracting tank distillation in the basket, basket distillation for orifice plate structure, distillation blue can be on-demand materials, such as fresh flowers and plants is placed at the bottom of the retort to join a certain percentage of pure water, water not overflow the distillation blue lowest place.General material liquid ratio of 1:3 is best.(can also add a moderate amount of additives according to the technical requirement).

2) open the extraction distillation tank heating system, make the distilled water heated to set temperature (generally for water boiling temperature of 100 degrees Celsius), extract the normal start.When distilled water temperature reached 70 degrees Celsius, open condensate valve. If equipped with ice water unit need to be water temperature reached 50 degrees Celsius is open cold water unit, and maintain stability of the condenser water flow rate.

3) distillation extraction began, oil-water separator bottom by glass pipe dynamically observe essential oil extraction effect.

4) distillation extraction began, condenser condensate must be open.General plant essential oil extraction time is longer, mezzanine boiler temperature can be set to 120 ~ 130 degrees Celsius, distillation tank temperature setting to 102 ~ 105 degrees.To keep the distillation tank water boiling.Ensure that the steam is enough.
Operation experience: before distillation temperature reach the set value, can be set higher interlayer boiler temperature, such as 150 degrees, let the temperature rise more quickly, when the temperature difference 10 degrees or so close to the set value, the temperature of interlining boiler to normal, such as 115 degrees.

5) general distillation extraction time is 3 ~ 5 hours, (according to the roses, for example, 3 hours yield efficiency 84.783%, yield efficiency 95.652%) 5 hours after the distillation extraction, shut off the distillation extraction tank heating system, etc. After 20 minutes in the closed cooling water.

6) condenser opens in the extraction tank temperature to 80 ° C, while ensuring the condenser top open open.

7) condenser in normal work, the upper openings with water vapor.If there are any vapor emitted that condensed water temperature too high or low condensed water.If there are any conditions, can use cold water cycle refrigeration unit.It can better improve the effect of the extraction of volatile oil.
(note: if the API to powder or tiny particles that can use API into the first fine stainless steel wire mesh paved distillation in the blue, after extraction is advantageous for the liquid out.)
(2) water vapor distilled water
1) the flowers and plants such as the material directly into the distillation extraction tank, the bottom of the retort adding suitable amount of pure water, half of the volume of water not overflow the retort, generally for 1/3 of the tanks as well.(can also add a moderate amount of additives according to process requirements, generally increase the concentration of 2.5% concentration of sodium chloride aqueous solution to distillation, obvious effect).
2) open the extraction distillation tank heating system, make the distilled water heated to set temperature (generally for water boiling temperature of 100 degrees Celsius), extract the normal start.When distilled water boiling on condensed water device, guide the steam entering the condenser, cooler, oil water separator.Condensate can be opened in advance Behind (like water distillation operation.)

We are selling below models:

Models Description Price
ABFEO100 100L
ABFEO200 200L
ABFEO300 300L
ABFEO400 400L
ABFEO500 500L


It can put 120kg flower into the EO1000
Leaves 150kg into EO 1000,
L W H : 6000X2300X 3700 MM


it can put 240kg flower into EO2000,
300kg leaves into EO 2000,
L W H : 5800X2400X3700MM


It can put 360kg flower into EO 3000,
450kg leaves into EO3000,
L W H :6200X2600X5200MM
ABFEO 4000  4000L
ABFEO 5000 5000L
ABFEO6000 6000L

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What is Distillation and How Does it Work?

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What is Distillation and How Does it Work?

Distillation is the art of removing these precious chemicals via high pressure steam or mix of steam and boiling water. To begin distillation, the appropriate amount of plant material is packed into a hopper. The canister is sealed to create atmospheric pressure. The correct amount of water is added for that batch and then heated. Steam is created by either boiling the water in the hopper or injecting steam and forced through the pressurized hopper or vessel containing the plants. The heat of the steam ruptures the molecules in the plant and carries the particles of essential oil and other constituents through a cooling system into another container. When the steam passes through the cooling unit, it reverts back to water, where it separates from the essential oil  because of their different densities. Essential oils are lighter than water and will therefore float on top. Water soluble chemicals will stay mixed with water creating extracts or hydrosols. Following is a brief description of three basic methods.
Water Distillation
For this method, the plant material is submerged in water. The water is then heated to boiling point  During this process, there is direct contact between boiling water and plant material.  All parts of the plant material must be kept moving by the motion of boiling water. This method is used with plant material that can’t be easily be broken down with steam or water and steam distillation such as cinnamon bark.

Water and Steam Distillation
Water and steam distillation methods employ the same basic equipment as water distillers. The fundamental difference is the plant material is set on a perforated grill above the water as opposed to being immersed in the water. This method is more energy efficient as the essential oil is produced at a much faster rate with higher yields. Thermal degradation is reduced as well. Many oils which contain significant aldehydes such as lemongrass are still produced this way.

Direct Steam Distillation

This type of distiller is designed quite differently than water and water steam distillers. There is no water in the hopper with the plant material. Steam is generated in a separate boiler chamber and then injected into the plant material from outside the still. The plant material is placed on a perforated grid above the steam inlet. A real advantage of steam generation is that the amount of steam can be readily controlled. Because steam is generated in a satellite boiler, the plant material can be heated at lower temperatures of 90- 100° C reducing thermal degradation.  A drawback to steam distillation is the much higher capital expenditure on such equipment.  Many mass produced essential oils such as rosemary,  lavender and eucalyptus, are produced this way

Do All Plants Produce Essential Oils?

No they don’t.  In fact of the hundreds of thousands of plant species, only a few thousand may be capable of producing an essential oil.  Therefore, when companies state that essential oils are the “life blood of a plant” this is not true.

Can Any Plant be Distilled?

Theoretically, you can distill any plant material, however, you may not like the results. Distillation is reserved for plants which are capable of producing an essential oil and not easily damaged by heat.  Jasmine is one of the most coveted aromatic oils in the world but it can’t be distilled without serious thermal degradation which destroys the aromatic properties that make it so precious.

Given that it takes thousands of pounds of petals harvested during a few weeks of the year and a few hours of those days to produce even a few ounces of oil through other effective methods of extraction, it make no economical sense to waste any petals on distillation to produce an inferior product.

Are Plants Which Do Not Produce Essential Oil Distilled?

Some plants such as witch hazel or sweetgrass which don’t produce an essential oil are distilled because their water is coveted for aromatic, spiritual and medicinal properties.  Others can be concentrated to create water soluble  extracts such as cucumber or green tea.

Are all Plants Distilled in the Same Amount of Time?

The amount of time for distillation per batch of plant material has a vast range dependent on the quality of oil required and the plant material itself. This is where expertise of specific plants is necessary to produce a quality oil or one to specific industry standards. For example, lavender can be distilled in one to two hours depending on batch size, whereas clove or cinnamon take much longer.

Different distillation times of a particular plant will create different grades.  Ylang Ylang, a prized aromatic oil, has several grades (extra, 1 , 2, 3 and dark).  The grades are indicative of distillation time with “extra”  and 1 being the shortest time, which produces the lowest yield, best aromatic properties and highest price.  The perfume industry purchases most of these grades leaving very little for public consumption.  Grade 3 and dark, produce more oil because of longer distillation time, but is not considered fragrantly appealing so the price is dramatically reduced.  These grades are usually destined for industrial purpose.

There is also no such thing as 2nd or 3rd distillation.  A batch of plant material is distilled once and then discarded.  Most often the plant material is spread back in the fields to provide nutrients and act as ground cover to reduce weeds.

Can an Essential Oil or Liquid Plant Extract be Distilled?   

Yes it can.  This is most often done to further process an oil to remove impurities or reduce high amounts of hazardous chemicals.  Peppermint which may contain 50-80% menthol on initial distillation can be re distilled to reduce levels  under 40% content, making the oil more aromatic and safer to use.  The menthol crystals that are removed are usually sold to pharmaceutical companies.  Bitter orange which is initially expeller pressed, is then distilled to remove water and other impurities.  many citrus oils are extracted via cold pressing but then distilled to remove photo sensitizing chemicals or isolate other aroma chemicals.  This process is called “Folding”

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Production of Hot Melt Pressure Sensitive Adhesives

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Production of Hot Melt Pressure Sensitive Adhesives

Hot Melt Pressure Sensitive Adhesives (HMPSAs) are composed of Styrenic Block Copolymers (SBC), tackifier, mineral oil, a small amount of antioxidant, and other special additives – such as filler, colorant, and low molecular weight polymer if needed. Most of these ingredients are thermoplastic materials and require a heated environment to mix them together.

Many different types of mixers are available for mixing HMPSAs. Following are two commonly used techniques.

Vertical Reactor mixer. Use of Vertical Reactor is the most economic technique for making HMPSAs. Low molecular weight ingredients, oil and/or tackifiers, must be charged first for this type of mixer. Otherwise, the high torque generated from SBC may damage agitators. Commonly used charging sequence is as follows: 1) mineral oil and antioxidant, 2) tackifiers, and 3) SBC. A good vertical mixer should provide the following features: 1) excellent jacketed hot oil circulation to provide quick heat exchange, 2) adequate agitating configuration to reduce mixing time, 3) scrappers to remove adhesives off the wall and bottom of mixing vessel. This will improve heat exchange and minimize char formation, 4) vacuuming system to avoid oxidation during mixing.

Horizontal Sigma mixer (Sigma blade mixer or Kneader). This type of mixer is normally accompanied with an extruder for easy adhesive discharging purpose, named mix-truder. The mixing sequence of a horizontal mixer is just opposite to that of a vertical one. Generally, the sequence is as follow: 1) SBC plus antioxidant, 2) tackifiers, and 3) mineral oil. It is more efficient to produce a batch of HMPSA with a horizontal mixer versus a vertical one due to its faster heat exchange and higher shearing torque. Additionally, a horizontal mixer can handle more viscous materials with its heavy duty rotor. It is important to point out that tackifiers must be added slowly, portion by portion, after the SBC is fully masticated. Otherwise, the molten tackifier will function like a lubricant to the SBC. This will greatly reduce the shearing efficiency of rotor and result in a poor mixing. Since, the mixing sequence starts with SBC, if the mixing chamber is not under a vacuum environment, the SBC tends to oxidize with surrounded air or oxygen disregarding the addition of antioxidant.

In summary, the vertical mixers offer the following two advantages:

The system is much easier to pull vacuum during mixing. HMPSAs made by this technique normally offer better aging performances compared to those made with a horizontal mixer.
The material charging sequence is more flexible. There is no need for a skillful labor working on a vertical mixer.

The disadvantages of vertical mixers are:

It is somewhat difficult to produce very high viscosity products due to its lower shearing torque.
The heat exchange is somewhat slow. The total mixing time is therefore longer than those made with horizontal mixers.

hotmelt adhesive Chemical reaction vessel, Reaction kettle

We also have specialization in below items:

Chemical Equipments: Sigma Kneader, Reaction Vessel, Horizontal Ribbon Blender, High Speed Paint Disperser, Three Roller Grinding Mill ,Stainless steel Colloid Grinder, Complete Unsaturated Polyester Resin Production Line

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