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A Printed Circuit Board (PCB) is a Sheet of Insulating Material such as Fiberglass, with Metallic Circuit or Track Printed or Etched on it for Electrical Conductivity. A PCB is found in almost all electronic products that we use in our daily life – Mobile Phone, Tablet, TV, Computer, Laptop, Keyboard, Mouse, Military Weapons, Airplane, Satellite etc. In applications where fine conductive traces are needed, such as computers, PCBs are made by a photolithographic process, in a larger scale version of the way conductive paths in processors are made. Electronic components are typically placed by machine onto a finished PCB that has solder dabs in place. The PCB bakes in an industrial oven to melt the solder, which joins the connections. Most PCBs are made from fiberglass or glass-reinforced plastics with copper traces. PCBs can be single-layer for simple electronic devices. Printed circuit boards for complex hardware, such as computer graphics cards and motherboards, may have up to twelve layers. PCBs are most often green but they can come in any color. Other methods of PCB manufacturing include silk-screening and CNC-milling. Different types of printed circuit boards The most basic type of PCB is the original single-layer board which, as the name suggests, involves mounting one layer of copper on a substrate. Later developments led to double-layer and multi-layer PCBs, which saw multiple copper layers applied to two or more substrate layers. This made it possible to add a much higher density of components to the PCB and use them to create more powerful devices. While multi-layer boards did make maintenance more difficult, they soon became so cheap to make that it is now often more cost-effective to replace an entire board than to repair it. Today, the most common substrate is FR-4 glass epoxy, though new materials have emerged as the popularity of PCBs has grown. Examples of PCB configurations include rigid PCBs, flexible PCBs, rigid-flex PCBs, and high-frequency PCBs. The different configurations often use different substrates. And there are many different types of PCB such as Flexible PCB, Rigid-Flex PCB, HDI PCB Board, High Frequency PCB, Aluminum PCB, Ceramic PCB, Multilayer PCB, etc. What is PCB Assembly? Well, a PCB is of No use unless we solder some Active and Passive Electronic Components on to the Board. These Electronic Components can be either Thru-Hole of SMD (Surface Mount Components). Once all the Electronic Components are Soldered (Assembled) on to the Board, it is Termed as Printed Circuit Board Assembly or PCB Assembly. The assembly can be also divided into Aerospace PCB Assembly and Automotive PCB Assembly. ha inviato un aggiornamento 2 anni, 2 mesi fa

This modern Tensionless Relax Dryer is widely used for open and tubular width knit fabrics. This is provided to ensure advanced output with its easy to operate features and high durability. It comes with a fabrics infeed section having different features such as turbine-worm gear box, infeed box, axis roller, pneumatic tension device, etc. The overfeeding roller motility is designed to move frequently and reliably with its easy to operate features. This comes with the overfeeding motion that is precisely controlled by inverter.

This modern Tensionless Relax Dryer is widely used for open and tubular width knit fabrics. This is provided to ensure advanced output with its easy to operate features and high durability. It comes with a fabrics infeed section having different features such as turbine-worm gear box, infeed box, axis roller, pneumatic tension device, etc. The overfeeding roller motility is designed to move frequently and reliably with its easy to operate features. This comes with the overfeeding motion that is precisely controlled by inverter.
The web belt adopts pneumatic fastening to ensure constant tension in the stopping modes of machines. This belt adheres to pneumatic correct system for correcting the path in a reliable way. In addition to this, every belt is accurately managed by separately inverter to ensure adaptable speed. The drying chamber of the machine provides two layers filtering net having 40mesh and stainless steel design. The frame of the machine is developed using high-grade carbon steel square pipe. Moreover, temperature insulated material is also included in the machine for minimizing the energy loss.
The P structured silicon rubber seal is temperature resistant that reduces the heat loss in maximal degree and saves energy even in upper limit. This Tensionless Relax Dryer comes with a section of fabrics exit section that follows motor direction technique. The section comes with plaiting and exit devices.
Features of Tensionless Relax Dryer:
Adoption of pneumatic direction changing valves

Controlling and electromagnetic valves for advanced functionality

Counter-clockwise system

Electrical control section with blowers in sequence system

Emergency cooling system

Heat recycles system in each chamber excluding the first one

Thermo oil heating method

Three way valves

Technical Specifications of Tensionless Relax Dryer:
After-sales Service Provided: Engineers available to service machinery overseas

Automatic Grade: Automatic

Brand Name: Asia Star

Certification: CE

Dimension(L*W*H): how many chambers

exported: many countries

Machine colour: jewelry blue + Crystal White

Model Number: YXHG3200

Place of Origin: Shandong, China (Mainland)

Power(W): 50kw

Voltage: 380v,60HZ

Warranty: one year

Weight: 50tons

Tubular Compactor Machine
Tubular compactor machine has four basic sections, the entry section, the edge driver section, the compaction section and the output section. Tubular compacting machine is used after hydro extractor, dewatering machine and textile dryer. By this compactor machine, compacting is done for control the shrinkage of the fabric. Here, different types of off line quality of the fabric are measured. In this article I will discuss about functions, parts, working principle, parameters and specification of tubular compactor machine.

Functions of Tubular Compactor:
Following objectives are achieved by the tubular compactor. They are-

Shrinkage of the fabric is controlled by the compactor.

Fabric width is controlled by the compactor.

GSM of the fabric is adjusted by the compacting.

Fabric smoothness is achieved by the compactor.

Heat setting of fabric for Lycra is done by tubular compactor.http://www.dztpyjx.com/tensionless-dryer/

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