Sheep and Cows Leather Processing Machines Animal Leather Full Processing Machine Line

• After-sales Service: Good for 24*7
• Warranty: 12 Months
• Type: Sheet Extruder
• Plastic Processed: PVC
• Product Type: Profile Extrusion Molding Machine
• Feeding Mode: Multiple Feed
• Model NO.: JSD755
• Assembly Structure: Separate Type Extruder
• Screw: Twin-Screw
• Engagement System: Full Intermeshing
• Screw Channel Structure: Deep Screw
• Exhaust: Exhaust
• Automation: Automatic
• Computerized: Computerized
• Color: Beautiful
• Voltage: 380V
• Service: Good
• Transport Package: Film
• Specification: JSD75
• Trademark: JSD
• Origin: China
• HS Code: 84772010
• Production Capacity: 500sets/Y

Product Description

leather process
Lime / Liming

The first step in the liming drum is the soaking of the hide.

Using water, the raw material is cleaned of any natural hide dirt.

The main objective in soaking the hide is to restore it to its natural condition as on the living animal with a water content of approximately 65%

After this, the liming takes place in the same drum.

Here, substances that can´t be turned into leather, such as natural oils and proteins, are washed out of the hide.

By adding lime and sodium sulphide, the ph-value during the dispensing process is raised. By doing so, hair is chemically removed from the surface of the hide.

Soaking and liming are carried out in one process, which typically lasts from 24 to 36 hours.

The limed and dehaired hide is now called pelt.

Fleshing

In the fleshing excess flesh and fatty tissue from under the pelt is removed mechanically.

Afterwards, the defleshed pelt is trimmed. During this process, the sections of the root of the tail, the navel, the kneecaps, and other unwanted parts of the hide are cut off.

Splitting

A bandknife is used to split the pelt horizontally into a grain split and a flesh split.

The grain or leather split is later processed into upper leather.

The flesh split is usually processed into split leather, but is here supplied to the gelatin industry. It is far too thin to be used as split leather, because the leather split is cut extra thickly.


Tannin

The central flow of work during leather fabrication is the tanning, which takes about 20 hours and follows a special formula carried out in a drum.

Until it is tanned, the hide is perishable . Only by tanning is the hide preserved and made durable.

This process is made up of five steps, which take place one after another in the tanning drum: deliming, bating, pickling tanning, and basification.

During the first step - deliming -, the lime added in the liming drum is released, this step is carried out using carbon dioxide, which is very environmentally friendly.

During the next step - bating-, collagen and other proteins are removed in a regulated way by the use of enzymes. By doing this, the fibers become more flexible and the leather becomes softer.

In the pickle, the ph-value of the hide is lowered by adding acid and salt to prepare the hide for the addition of tanning agent.

When the hide has reached a ph-value of about 3 throughout its full width, it is ready for the adding of the tanning agent..

A wide variety of substances can be used for tanning.

Chromium, the most widely used and the most eco-friendly tanning agent available.

Chromium is a natural, non-toxic element and is actually a micronutrient found in our food.

When the ph-value is low, the chromium molecules are very small and can therefore easily penetrate the hide and become incorporated in the skin fibers

During basification, the pH-value is now slightly raised, which makes the chromium particles in the hide grow larger and connect with the skin collagen in at least two places.

This connection between tanning agent and hide material is called tanning.

The chromium tanning dyes the hide into a bluish color; therefore, after tanning it is called "wet blue".

Sammying/ cutting

The wet blues, which are soaking wet, are placed on the sammying machine and two felt rollers press out a part of the water under high pressure.

Afterwards, the complete hide is cut into two sides, because sides are easier to be handled in further processing.


Calender, machine that has wide application in the finishing of textile fabrics, the production of vinyl plastic sheeting, rubber sheeting, coated fabrics, and the manufacture of paper.
Material
PVC, ABS and PS constitute the majority of calendered thermoplastics, although some grades of polyethylene and polypropylene are also used.
Facts of Calendering in Textile
*Provides highly lustrous appearance on the fabric surface.
*Provides smooth, glossy and silky touch to the fabric.
*Increases fabric cover factor
*Compress fabric and reduce thickness
*Causes a closing to-gather of the threads by flattening them & thus tending to fill up the inter stiches between warp and weft.
*Reduce air permeability by changing its porosity
*Increase opacity of fabric
*Reduce yarn slippage
*Flattens slubs
*Consolidation of non-woven

Advantages of Calendering
The calender is very good at handling polymer that are heat sensitive as it causes very little thermal degradation.
It is good at mixing polymers that contain high amount of solid additives that don't get blended or fluxed in very well.
Due to this calender is produce a large amount of melt than extrusion

Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture It is an essential source of renewable energy, and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power. Active solar techniques include the use of photovoltaic systems, concentrated solar power, and solar water heating to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light-dispersing properties, and designing spaces that naturally circulate air.
 Active solar techniques use photovoltaics, concentrated solar power, solar thermal collectors, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun. Active solar technologies increase the supply of energy and are considered supply side technologies, while passive solar technologies reduce the need for alternate resources and are generally considered demand-side technologie

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Strong anti-slip property, high elasticity, and good ventilation property, it is mainly used in the sites of high or medium-grade carpet rug, bathroom, and bathtub, which needs slip protection and shock absorption. It can deal with the problem of the carpet's deformation caused by the skidding and repeated step-on, especially the moldy moth biting phenomena of the carpet.




Main Features

1, PLC, touch screen control system, greatly improve the stability of the device, both self-monitoring function, simple and fast operation, can be based on different sets of memory storage, replacement mold, no need to re-temperature, pressure, time and other settings.

2, servo motor feed, accurate and no error, suitable for the production of large quantities of coil material, save the provincial materials.

3. The pressure forming part adopts a four-cylinder six-column automatic balance structure, thickens the worktable, and guarantees the compression molding accuracy ± 0.1 mm in each position.

4, pressure plate speed, flexible pressure, making the material better molding effect.

5, hydraulic system, supporting electrical appliances are imported famous products, power saving, small noise, simple operation, high efficiency.

The heating part of the oven is controlled by the inverter fan to drive the hot air cycle to heat up, and the heating effect is uniform and stable

7, the size of the company's equipment can be customized.

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Column rubber vulcanizing press applies to all kinds of rubber (natural rubber, EPDM rubber, NBR rubber, synthetic rubber, silicone rubber ext. )plate vulcanizing and compression molding.
 
Column rubber vulcanizing press can be used to make O ring, sealing parts, oil seal, auto parts, rubber crash pad, rubber air spring, key board, medical rubber parts, rubber bottle stopper, silicone wrist band, water-stop tape, bridge support/bridge bearings, rubber cable, electronics insulators etc..

Column rubber vulcanizing press can also be used to make bakelite products molding, and other thermalsetting plastic. The machine can be used to make foam products, foam resin,thin metal, construction material compression molding.

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FAQ
 
1. Q: Are you a factory or trading company?    
A: We are a factory with the export license, we have professional experience about many years.
2. Q:  Can you do OEM?    
A: Yes, OEM is available! 
3. Q: How can I get some samples?    
A: We are glad to offer you free samples. New clients are expected to pay for the delivery cost .
4. Q: What is your payment term?    
A: Commonly 30% deposit by T/T, the balance payment before loading
5.Q: Where is your main market?
A: Our market are located in  Eastern Asia,South Asia,Africa and so on. 
 
Any questions pls feel free to contact us at [phone]
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Our Certificate

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