Monthly Archives: July 2017

Scope Of RFID Systems In Security Measures

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What is RFID?

 

Radio-frequency identification device is a technology that retrieves the status and presence of a thing to which it is attached to remotely. These devices will track the objects automatically and sends the embedded information to the processors.

 

Typical components of RFID system

 

An RFID system contains an RFID tag, RFID reader, RFID antenna, and RFID package.

 

RFID tag is attached to the item that needs to be tracked and identified.

 

RFID antenna will detect the RFID tag when it comes in range.

 

RFID reader reads the RFID tags and authenticates its presence.

 

RFID package contains the server and software and transmits the information to all other applications.

 

Application of RFID systems

 

To simplify, RFID systems do the same function as of a BAR-CODES, but when it comes to applications they are widely spread as RFID systems doesn’t need to maintain contact with the scanners as in case of BAR-CODE. High Frequency RFID systems doesn’t necessarily to be appear in the line of sight, especially such are applied for livestock tracking, Missile tracking, automobile tracking through assembly lines and most importantly in case of vehicle tracking.

 

Security potential

 

Increasing security measures through CCTV cameras has already outdated, the latest technology implies to the usage of RFID readers wherever the security is needed along with authentication.

 

They can be installed in a library, home, and elsewhere domestically to secure the important files, books, and expensive things, so that even when they are found missing they can be easily detected with the help of local servers that are giving location information.

 

They can also be placed in a vehicle, thanks to their non-contact readable characteristic feature as the vehicles can be tracked along the route as they can use the location provided by the nearest GSM signal boosting towers and thus one can keep notice of their vehicles.

 

The size of the smallest developed RFID is 0.05mm × 0.05mm size and the average size would be around 3mm x 3mm. As we go cheaper the size will be increased consistently. Their dimensions make them invisible to see which a plus point in terms of security measures is.

 

Evercom Communication Technology Co., Ltd. is the professional company of specializing in kinds of antennas. If you are interested in learning more details about RFID antenna and other antennas, welcome to visit Evercom’s website to see what antennas they can offer you.

 

 

Article Source: http://EzineArticles.com/8431202

Permanent Cosmetics and Permanent Makeup Accessories – Introduction to the Celebrities Choice

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Face it, celebrities are icons. They are people that look flawless all of the time. They always have the right accessories, beautiful faces and their makeup is perfectly applied. Do you know the reason for that? Permanent cosmetics and quality permanent makeup accessories. This has been a secret to the stars for years and as of late, it has become an increasingly popular choice for average people looking for a way to look like their favorite celebrities!

 

You may have heard of permanent cosmetics before but do you really understand exactly what the procedure entails? That is what we are going to discuss next. Cosmetic tattooing is another name for cosmetics that are permanent and it does involve tattooing. It involves playing ink under the first few layers of skin in order to make things like eyeliner, lip liner or even eyebrows permanent, so you no longer have to use eye pencils, eyebrow pencils or liner for your lips. This in turn will save you quite a bit of money.

 

Whenever you choose to get permanent cosmetics and permanent makeup accessories, you certainly want to find a technician that is certified and you want someone that knows exactly what they are doing before you commit. Why would someone get a treatment like this? Well, it saves time, money and you will actually look more youthful and beautiful by the time the treatment is over! It is the ideal solution for someone that is looking to stay young and for someone that wants to stop wasting their money on makeup that never looks completely flawless.

 

Bella Co., Ltd. is the company of specializing in supplying high quality permanent makeup devices and permanent makeup accessories. If you are interested in learning more tips of beauty, please don’t hesitate to visit Bella’s website to find something suitable for you.

 

Article Source: http://EzineArticles.com/5168870

Tell You Some Simple Introduction of Pipe Fittings

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The components used in a piping system to connect the various sections of the pipe in order to change the direction of flow, are called fittings. Fittings are made from a number of materials including steel, bronze, cast iron, plastic and glass.

 

Standards have been established to ensure that fittings are made from proper materials and are able to handle the designed pressures. Some of the important functions of these fittings are:

 

  • Changing the direction of flow

 

  • Providing branch connections

 

  • Changing the size of lines

 

  • Closing lines

 

  • Connecting lines.

 

Fittings for Changing The Direction of Flow

 

To change the direction of flow, the pipe fittings that are normally used are referred to as elbows. Elbows generally come in all angles but those that are commonly used are the 45° and 90° ones.

 

Fittings for Changing The Size of The Pipelines

 

The function of the reducer is to reduce the line to a smaller pipe size. One reason for doing so is to increase the pressure in the system.

 

Pipe Joints

 

Pipe joints can be of the screwed, flanged or welded type. Each of these joints which are widely used, have their own advantages and disadvantages.

 

Screwed fittings are joined to the pipe by means of threads. The main advantage of the threaded joints is that the pipe length can be easily tailored at a later stage. As a threaded joint has metal-to-metal contact between the threads of two mating parts of the pipe, the risk of leakage is high. Hence sealing of the threaded joint becomes very important. The traditional method of providing a seal between the mating threads is to coat the threads with a paste dope. In recent years, the invention of Teflon sealing tapes has made for a more effective solution. The Teflon (being a registered trademark of Du Pont De Neumors and Company) tape can be simply wound over the threads for sealing.

 

Flanged fittings are either forged or made as cast pipe fittings. A flange is a rim or ring at the end of the fitting, which mates with another section of the pipe. Pipe sections can also be made with flanged ends. Flanges are joined either by being bolted together or by being welded together. The flanged faces again have metal-to-metal contact and proper sealing needs to be provided between the two mating surfaces to avoid leakages. A gasket is usually inserted between the mating surfaces of two flanges, which are bolted together. Normally, compressed asbestos gaskets can be used under conditions of normal pressure and temperature. However, when the system operates under higher pressure and temperature conditions, higher-grade gaskets are used.

 

Other pipe fittings used in flanged connections include expansion joints and vibration dampeners. Expansion joints have three functions:

 

  1. They compensate for slight changes in the length of the pipes, by allowing the joined sections of rigid pipes to expand or contract with changes in temperature.

 

  1. They allow pipe motion either to the side or along the length of the pipe, as the pipe shifts after installation.

 

  1. They help dampen vibration to some extent and reduce the noise carried along the pipe and originating from distant pumps.

 

It has a leak proof tube that extends through the bore and forms the outside surface of the flanges. Natural or synthetic rubber compounds are used for this purpose, depending on the type of application. Other types of expansion joints include metal bellows (corrugated type), spiral wound types and slip joint types.

 

Vibration dampeners are designed specifically to absorb vibration because vibrations reduce the life of the pipes as well as the operating equipment. They also eliminate line noises carried by the pipes.

 

Wellgrow Industries Corp. is the professional cast pipe fittings and other stainless fittings manufacturer in the industry. If you are interested in learning more information about pipe fittings, try to visit the website of Wellgrow to see what products they can offer you!

 

 

Article Source: http://machineryequipmentonline.com/hydraulics-and-pneumatics/hydraulic-accessoriesfluid-conductors-hydraulic-pipes-and-hoses/

The Process of Getting Started With Your Archery Bow

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If you are thinking about getting involved in archery, but you are not sure what you need, then you are in luck. One thing that I like about this sport is that there are only a few things that you need to get off and running. Obviously, the first thing that you would need to buy is one of the many archery bows that are on the market today. Next, you will need to get arrows to shoot. To make your life a bit easier, there are also some accessories that I would recommend.

 

When you first start you will need to make the decision on which of the many archery bows you would like to shoot. There are compounds, recurves, takedown bows, longbows, etc. out there so it is best that you do a bit of research on them before you commit buying your bow of choice. They all have their own unique set of attributes that are made to fit archers of all varieties. Once you figure out what type of shooting you want to do, then you need to figure out how much you are willing to spend. This will help you narrow down your focus and hone in on a decision.

 

You now need to get yourself something to shoot. The most popular arrows that you will find out there are wood, aluminum and carbon. I have personally transitioned from using the wood arrows in my childhood, to aluminum in my teens, and now the only thing that I use is carbon. Everything matters when you are shooting your archery bow, so you need to make sure that the arrows are consistent. Carbon is extremely consistent, but they will be the most expensive. Aluminum is a good starter arrow because they are relatively inexpensive, and are more consistent than wood. I would suggest staying away from wood arrows until you have developed an eye for purchasing arrows because it is much harder to find a quality wood version.

 

I would also suggest that you get an archery arm glove or an archery bow release-depending on the type of bow that you purchased. When I began shooting, I mainly liked to use recurve bows. When you start to move up in weight, your fingers get sore after 40-50 shots due to finger pinch — unless you are using a glove. Once I moved up to a compound bow, I knew that there would be no way that I would be able to draw a 55-70 pound compound bow with my fingers so I opted to use an archery bow release.

 

If you are anything like me, then you will probably also want to get an archery target so that you do not have to drive to your local archery range every time that you want to shoot. I purchased a Bulldog archery target as they offer a lifetime guarantee. This means that I can shoot off a couple of dozen arrows when I feel that I need a little bit extra practice. Again, the archery target is not a necessity like the arrows, and the archery bows are, but having one never hurts so that you can get as much practice as possible out of it.

 

Once you have your bow, arrows, target and accessories you can start the fun part. Shooting an archery bow is the next journey that you will embark on. Getting the equipment was the easiest part, now it is time to perfect your form. It is good to read up on tips and tricks when shooting your archery bow, but shooting is the best.

 

Man Kung archery bow series including recurve bows and compound bows, which are manufactured with different specification to satisfy various demand of the clients. And we also provide archery bow accessories for you to choose. Welcome to browse our archery bow products below to find the most suitable bow for you. We believe that Man Kung is the first choice of archery bow manufacturer to you!

 

Article Source: http://EzineArticles.com/9127644

The Basics of High Speed EDM Hole Drilling

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This article discusses how EDM hold drilling – designed for fast, accurate small- and deep-hole drilling applications – has become a whole new method of manufacturing molds and parts.

 

High speed EDM hole drilling was designed especially for fast, accurate small- and deep-hole drilling applications. Small holes that were once almost impossible to drill by conventional machine tools are now being performed with ease. With the capability of drilling through virtually any conductive material, the use of this technology is continually expanding.

 

Initially shops were using this technology specifically for start holes in wire EDM jobs. Because of this technology, workpiece materials are being sent out for heat treating prior to drilling the start hole. This removed two problems: (1) having to program, locate and drill the start hole by conventional machine methods in the “soft” workpiece prior to heat treat and (2) by sending the workpiece for heat treat before drilling the start hole, all the stresses were being removed from the workpiece prior to the EDM process being applied. As this process became more widely known, test burns were being done in more than just hardened tool steel; tungsten carbide, aluminum, brass and inconel were being tested. High-speed EDM hole drilling applications began to expand to mold and part manufacturing-injection nozzles, oil drain holes, hydraulic cylinders and dowel pins, as well as turbine blades, ball bearings and safety wire holes in hex nuts, to name a few.

 

Basic Features of the EDM Hole Driller Machine

  • Stainless steel work table
  • Rotating spindle
  • Drill chuck or collet system for holding electrodes
  • Ceramic or diamond guides
  • Power supply with control panel
  • Capacitor box
  • Dielectric fluid pump

 

The EDM Drilling Process

The process consists of using a precision tubular electrode (generally brass or copper) mounted into the drill chuck located on the “Z” axis and held in location on top of the workpiece by the ceramic guide. The top of the workpiece is located and the drilling depth is set. The electrode rotation is turned on and the deionized water solution, which is pressurized between 50 and 100 kg/cm2, is sent through the tubular electrode as a flushing agent. The power supply parameters are set-which normally consist of on-time, off-time, peak current and amount of capacitance. At this point, the discharge is turned on to begin the drilling cycle. At the end of the drilling cycle, the discharge is turned off and the “Z” axis is retracted above the workpiece.

 

Drilling Times

Drilling times are based on the hole size and type of material. Chart I lists a few samples for reference.

 

Chart I

Material Electrode Dia. Drill Depth Machining Time
Alloy Tool Steel .020″ 0.50″ 25 to 35 seconds
1.00″ 50 to 60 seconds
.040″ 1.00″ 55 to 65 seconds
Tungsten Carbide .020″ 0.50″ 4 to 5 minutes
1.00″ 8 to 9 minutes
Aluminum .020″ 0.50″ 40 to 50 seconds
1.00″ 90 to 100 seconds
.040″ 2.75″ 3 minutes

 

Observing the aforementioned times explains why high-speed EDM hole drilling has become an alternate method to conventional machining in mold manufacturing. In addition, this method of drilling produces burr-free holes, which results in the elimination of secondary deburring processes. Larger power supplies and drill/collet chucks have expanded the diameter range of standard drilled hole sizes from .010″ to .118″ to .010″ to .236″. EDM hole drilling can now be done on a manual, ZNC or CNC machine.

 

Today, many of the machines use distilled water as the flushing agent, which opens up new application possibilities in the medical field. With continued improvement in this technology, more and more applications are being seen on the horizon – EDM hole drilling has become a whole new method of manufacturing molds and parts.

 

If you need more information about drilling machine manufacturers or hole drilling, try to visit the website of EXCETEK, you’ll find what you need.

 

Article Source: http://www.moldmakingtechnology.com/articles/the-basics-of-high-speed-edm-hole-drilling

What Are CNC Rotary Tables And How Are They Used?

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CNC rotary tables are a key to automated machining. Before getting into the specifics of CNC rotary tables though, a brief discourse in the development and terminology of CNC machining will help from this point forward.

 

CNC is an acronym for Computer Numerical Control. It is the direct descendant of numerical control (NC) technology; think punch cards and magnetic tape. In turn, NC technology was invented to improve upon cam and tracer machine control in use at that time. Cam and tracer machining required construction of a template to trace and that interposed a costly, time-consuming step that had significant potential for human error.

 

Rotary Tables Defined

 

A rotary table is, as its name suggests, a table that rotates very accurately in concentric fashion around its center axis. In the high-accuracy, high-cost category of rotary tables, accuracy can mean radial runout – the amount of deviation from perfectly centered while rotating on the center axis – of 0.00004 of an inch and angular accuracy – degrees of rotation about the center axis – of 0.0002 of an inch. For the purpose of dampening vibration, the body of a rotary table is normally made of one of the “gray” iron grades. The rotating table plate is typically hardened, alloyed steel that is machined and rotary ground.

 

Purpose of CNC Rotary Tables

 

For automated machining, the entire purpose of CNC rotary tables is to provide a fourth axis. In addition to the normal axes of X, Y and Z, a CNC rotary table adds a rotational axis, known as the “W” axis, to increase machine accuracy and reduce costs. For example, using a CNC milling machine alone to make a stop sign-shaped piece would require moving the cutting tool around the piece to cut the vertical and horizontal sides and then cutting the angled sides by moving the cutting tool on a 45 degree angle as it is removing material. This requires eight machining passes. Each operation introduces a cumulative dimensional error for the sides parallel each other. Using a CNC rotary table for the same part means positioning the cutter in X or Y one time while rotating the part in 45 degree increments for each horizontal or vertical pass. Because it is cutting on only one side of the cutter in either X or Y, any machine tolerance error, tool wear and normal tool deflection from the forces of machining are reduce by half.

 

Spintop Machinery Co., Ltd. and Tanshing Accurate Industrial Co., Ltd. are professional manufacturers of rotary table, index table, and tailstock. If you are interested in learning more information about CNC rotary table or other related products, welcome to visit the website of TOPSDISK or Tanshing to obtain further details you need.

 

 

Article Source: http://www.cnc-rotarytables.com/

High Precision Taper Collet Holder Manufacturing Expert – SYIC

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The best-suited base collet holder is applicable to all the kinds of machining. This holder meets all the requirements for high speed cutting; Accuracy, rigidity, balance, and coolant.

 

Accuracy: super-precise spring collet that dramatically improves the quality of the finished surface and the operating life of the cutting tool.

 

Rigidity: thick holder and 6degree tapered collet design ensure the proper absorption of cutting vibrations.

 

Balance: pre-balanced design minimizes the vibrations resulting from high speed machining.

 

Coolant: compatible with the coolant-through features that maximizes the spindle-through features.

 

Established in 1979, Shin-Yain Industrial Co., Ltd. specializes in manufacturing high precision tool holders, cutting tools, and accessories for lathes, milling machines, CNC machining centers, mill-turn machines, etc. If you need more information about collet holders, welcome to visit our website to see what excellent products Shin-Yain can offer you.

 

 

Shin-Yain Industrial Co., Ltd.

No.198, Jingpu Rd., Qingshui Dist., Taichung City 436, Taiwan

Tel: +886-4-26237575

Fax: +886-4-26237676

E-mail: sales@syic.com

 

 

Article Source: http://www.mst-corp.co.jp/en/mc_tool/colletholder/

An Exciting Array of Water Dispensers to Choose From

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Modern living has become highly sophisticated and a lot of pressing concerns can cause elevated stress and physical breakdown. Good thing water dispensers came into the consumer world to help alleviate the high demands on time and energy.

 

A wide array of under sink water chiller and hot water dispenser brands is available and each comes with a price tag that suits every budget. Exciting designs and features will surely dazzle even the most meticulous customer.

 

The following sections discuss two types of water dispensing machines that are great value for money. The first one is able to provide sparklingly chilled water as really delightful refreshment. The second one produces boiling hot water needed to make coffee, tea and other hot drinks.

 

Under Sink Water Chillers

 

These water dispensing machines eliminate the cost and hassle of spending precious time going to the supermarket whenever bottled water has run out. They are equipped with a technologically advanced in line filtration system that can adequately provide a consistent source of chilled and filtered water. The water tastes absolutely great and it does not have the odors oftentimes associated with a mains water supply.

 

The under sink or under counter water chillers are cost effective as well as environmentally friendly. They are directly connected to the mains water supply and the water passes through the in line filtration system. Organic chemicals and undesirable tastes and odors are effectively removed. The filtration process then yields crystal clear and fresh tasting water that is dispensed via the available tap of the machine.

 

There are other essential features that every consumer must watch out for. It is best that the dispensers are built of stainless steel for durability while the coating is ideally of scratch and impact resistant plastic.

 

The refrigeration system must be efficient and silent if possible. With a static condenser, the operation will be incredibly great, providing considerable energy savings.

 

The sealed ice bank of the cooling system must be ensured at all times. Doing so will retain the hygienic levels of the dispensed water. There will then be a continual supply of ice cold water that is free from bacteria obtained from external sources. Also, the need for regular sanitization is reduced.

 

The maintenance of the units is very easy and economical for the filter change and sanitization are done once every 6 months. The product supplier has replacement filters and sanitization kits readily available to prevent any hitch in the use of the machine.

 

The most important thing to consider is that the dispensers bear the CE mark to ascertain that they have passed the European standards for product safety and usability.

 

Hot Water Dispensers

 

These appliances dispense water at near boiling point or at about 94 degrees Centigrade. They are commonly known as boiling water taps. They are available in two models such as hot only, and hot and cold water types. They are kettle like product items that boil and dispense single mugful of water.

 

They normally have variable settings in the quantity of water being dispensed. A few seconds is all it takes to dispense water via the hot water dispensers. This means potential energy saving benefits can be acquired because only the necessary amount of water is boiled.

 

The other types of hot water dispensing machines include boil on demand heaters, tank dispensers and thermo pot water dispensers. The boil on demand types of heaters is small, portable and cheap. It does not need installation and is an energy saver.

 

The hot water tank type of dispensers needs to be plumbed directly to the water supply. The water is then heated and dispensed via the faucet. It has a built in filter and thermostat.

 

The thermo pot type of hot water dispensers combines the features of an electric kettle and a hot water flask. It is potable and requires no installation.

 

Water dispensers have innovative designs and awesome features to choose from. Remarkably, they possess both beauty and functionally that make modern life less stressful.

 

There is a choice between countertop and under sink water chiller models, depending on individual preferences. Also, various hot water dispenser brands are also being offered and they serve as great alternatives for the traditional way of boiling water using a kettle.

 

Triwin Watertec, a Taiwan-based water dispenser supplier, is committed to design, manufacture and export high quality POU water dispensers/coolers since our establishment in 1984. If you are interested in learning more information about water dispensers, welcome to contact with Triwin Watertec.

 

 

Article Source: http://EzineArticles.com/7194541

Tell You Something About Semi Synthetic Engine Oil

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Semi synthetic engine oil also frequently referred to as “synthetic blends”, are blends of conventional or “mineral” oils typically containing no more than 30% synthetic oil. Semi-synthetics have the ability to provide engine defense for somewhat higher temperatures and fairly heavy loads and they are not as subject to evaporation as the typical mineral oil.

 

Synthetic blend oils can be a good choice for drivers who put heavy loads on their engine during intensive usage situations like towing or off-roading. Semi-Synthetics are designed to have many of the benefits of synthetic oil such as extended lubricant life and improved viscosity indexes but are generally lower cost than full synthetic oil.

 

Min June Hong Inc. is the high performance engine oil manufacturer in Taiwan. We offer clients excellent quality semi synthetic engine oil which compliant with the highest level regulation SL/CL in API American Petroleum Institution.

 

Our semi synthetic engine oil contains cleaning synthetic additive that can prevent carbon deposition and keeping your parts as new as possible. Besides, outstanding wear-resistance, quick starts up at low temperature, and gives full scope to lubrication effect. And it made from special synthetic polymer with feature of highly oxidation-resistant. Endurable for running at thermal environment while keeping the slick touch.

 

Min June Hong’s semi synthetic engine oil specially designed for engine structure used in new automobile models so that it gives full scope to the best engine performance. Suitable for gasoline and diesel engines with turbo charge, fuel injection, multi valve and computer-controlled for new automobile models in Europe, America and Japanese brand.

 

If you are interested in learning more information about high performance engine oil, welcome to visit the website of Min June Hong to see what products we can offer you!

 

MIN JUNE HONG INC.

No.39, Tou Kung 6 Rd., Industrial Area, Touliu City, Yun Lin Hsien, Taiwan

TEL: 886-5-5576016

FAX: 886-5-5576015

E-mail: info@maxlubeoil.com

 

 

Article Source: http://petrochoice.com/semi-synthetic-oil

The Advantages and Disadvantages of Embroidery Patches

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If you’re thinking about purchasing an embroidery patch that is custom made to suit your needs, you must first know what the most ideal backing material for your design. You also need to know the quality of the garment and the length of time the patch backings will last.

 

Depending on the process, here are the three types of patch backing.

 

  1. Iron-On Backing with Heat Sealing.
  2. Velcro Backing with Hooks and Loops.
  3. Adhesive Backing with Stick-On or special adhesive.

 

Before make a decision, write down the advantages and disadvantages associated with each of them.

 

Iron-On Backing

 

When you use iron-on backing on your patch, you will only receive a temporary security, because it won’t last long. This backing is ideal for ceremonial and casual clothing, but never uses it for any kind of exercises or training. They are mostly used to securely place the patch during the sewing process, so iron-on backing is not the best choice if you want to use it for your active lifestyle purposes.

 

Advantages and Disadvantages:

 

  • Ideal for ceremonial purposes.
  • Avoid heavily worn.
  • Avoid frequent cleaning.

 

Velcro Backing

 

Velcro backing has two styles of the backing material. Hook-sided for males and Two-sided for both males and females. Hook-sided is the best choice when you need to change new patches frequently or other small adjustments like in the case of military and police uniforms. But if a loop fastener isn’t attached on the clothing, we can use two-sided Velcro backing in the process.

 

As in Iron-on, Velcro backing also has advantages and disadvantages:

 

  • More durable. You can remove the patches before cleaning so they last longer.
  • Greater Flexibility. The patches can be easily removed and reattached anytime.
  • The only disadvantage is because Velcro patches are attached loosely.

 

Adhesive Backing

 

The most popular and familiar kind of backing used for embroidery patches is adhesive backing. It’s very convenient and the backing process is very easy. Today, this is the most ideal choice for short-term events. Adhesive backing is the best choice for one-time event, but it has its own disadvantage if you want to use for a long time.

 

The advantages and disadvantages of adhesive backing are below:

 

  • Easy to use on any garment.
  • Ideal patch backing for a short time span.
  • Stay away when the patchwork is required to remain permanent.

 

Patch Attach is a special kind of glue that can offer an extra way to add patches onto clothing and garments. The glue joins any kind of fabric you may think of and there will be no need to sew. It is washable, non-toxic and can be removed easily when subjected to heat. Most important is this glue will keep your patches permanent.

 

But among all of the methods above, the most ideal of attaching patches is by sewing them onto a garment. When sewn, the patch remains attached on the cloth for a long period of time. Experts claim that it can even last for decades.

 

Having made a decision on the kind of backing you need, it is now the time to look for an expert to do all the necessary steps in designing the patches.

 

Dah Jeng Embroidery Inc. was established in 1983 as a leading manufacturer and exporter in the field of business. Not only high quality embroidery patches, we also provide direct embroidery and sublimation transfers printing service. If you are interested in learning more details about embroidered patches or other embroidery items, welcome to contact with Dah Jeng directly!

 

Article Source: https://www.embroidered-patches.co.uk/the-advantages-and-disadvantages-of-embroidered-patch-backings/