Rubber Quality Testing In Industries

Rubber is a versatile material used in a variety of industrial and domestic applications. All over the world, natural rubber is extracted from trees. Natural rubber is very soft and in the form of a thick liquid. This type of rubber is not much use. Natural rubber is refined and produces a final product called polyisoprene. This type of rubber can also be synthesized by artificial methods. Synthetic rubber has a wide industrial use compared to natural rubber.

They are used to make tires, household products, tubes, industrial hoses, industrial bearings and so on. Rubber also has a high use in construction for flooring, matting, etc. It is also widely used in the manufacture of medical products such as surgical gloves, catheters, etc. The molecular structure of rubber consists of long interlocking polymer chains which make it ideal for use in a wide variety of industries.

Natural rubber is not completely suitable for industrial use so the vulcanization process is used to improve the properties and strength of the material by adding sulfur to it. After that, the vulcanization strength of the material is significantly increased, making it suitable for industrial use.

Since vulcanized rubber has wide use in industry, it is important to test various properties of materials and final products so that manufacturers can ensure the best quality they are provided to their customers. There are many different properties of rubber that need to be tested before starting the manufacturing process. This helps in avoiding massive rejection of the final product. Tests carried out on rubber include tensile strength, compressive strength, aging effects, etc. An important test procedure performed on rubber materials is testing under an ozone environment.

The ozone chamber is used to test the effect of ozone on rubber products or materials under controlled conditions. When rubber is exposed to ozone for a longer time, there is a significant change in material properties such as breaking strength, tensile strength, etc. The ozone chamber helps in detecting the amount of change that occurs in the test sample after it is exposed to the ozone in the ozone chamber.

Another major testing instrument used for rubber quality testing is the beach hardness tester. The beach hardness tester is used to test the hardness of rubber materials under a certain load. It helps in determining the visco-elastic properties of a material and helps in predicting its suitability for a particular use. The use of rubber products in today’s industrial scenario is unavoidable, but proper testing procedures are essential to ensure that the highest quality products are delivered to customers.

Finding a Manufacturer For Your Apparel

If you have a unique garment or apparel product that you need from a manufacturer, here are some tips to get you started.

Search Directories & Lists – There are many directories and manufacturers lists having 1000’s and 10’s of 1000’s of apparel and apparel manufacturers listed there. This is a way to find manufacturers, but it can be very time consuming to sort and contact all of them to start the weeding process.

Many manufacturers will only work in high volume, so even though you can get someone to respond to your request, sometimes this is telling you that in order to serve you, they will need you to order a much higher quantity.

View Apparel Samples – Most clothing manufacturers will include pictures of the types of products they have produced. Maybe they can produce shoes, bags, suits, t-shirts, dresses, children’s clothes and other items. If you need a specific type of clothing, looking for a manufacturer who has proven themselves in that field can save you time and hassle.

Get Some Quotes Before You Commit – Make sure you compare quotes from at least 3 different clothing companies before you decide who you will work with. Make sure each company you consider explains to you their routine for starting work on a new product. What is their price for the first sample? If you search online, make sure you have all of their contact information so you have a few different ways to contact them if you need anything.

You Need to Know When Buying a Reciprocating Air Compressor

Are you thinking about buying a reciprocating air compressor for your workshop, garage or business? There are some things you should know before buying one!

An air compressor is a huge investment, so take your time to learn about air compressors and the different models and options.

Buying the wrong air compressor will not only get you disappointed (in terms of usefulness or power or air output), but can also set you up for huge maintenance bills in the future.

Here are 10 things to think about BEFORE you go to the store to buy a reciprocating air compressor.

1. Compressor type

There are basically 3 types of reciprocating air compressors:

  • Single stage compressors
  • Two stage compressors
  • Twin compressors

Single stage units compress the air in one stroke, from ambient to end pressure. They typically go up to 20 CFM (cubic foot per minute) at a pressure of 125 psi

For more power, you will need a two stage compressor. A two stage compressor uses two stages to compress the air to the end pressure. This means your compressor will have two cylinders/pistons.

The big cylinder is the low pressure stage, while the small cylinder is the high stage. In between the stages the air is cooled.

Two stage air compressors go up to about 50 CFM capacity at about 175 psi.

Whether you need a single or two stage compressor ultimately depends on the amount of capacity (cubic foot per minute) you need.

2. Capacity and pressure

The capacity (CFM) and the pressure of the air compressor are the two most important specifications.

To find out the capacity that you need, simply add up the air consumption of all the air tools that you will use.

Small tools like nailers use only a little air, while big tools like sanders and grinder use lots of compressed air!

To find out the pressure that you need, check again the specifications of the air tools that you plan to use. The highest required pressure dictates the pressure that you need.

It’s always smart to buy a compressor that is capable to deliver more than you need. You will probably add more tools in the future, and almost all compressed air systems will have a leaking hose or coupling somewhere!

3. Horse power

You DON’T need to know the horsepower of the air compressor.

The horsepower is a result of the required pressure and capacity that you need, not the other way around.

Don’t look at horsepower. Look at capacity (CFM) and pressure (psi).

4. Electrical connections

You wouldn’t be the first happy new compressor owner that comes home with an air compressor that he is unable to wire up!

Know the voltage that you have at home. Know the maximum current that your wiring can handle. Do you have single phase or 3 phase power?

Installing extra electrical wiring (or even having 3 phase power installed at your home!) can be more expensive than the air compressor itself!

5. Noise

Do you plan to install the compressor inside or outside?

A reciprocating compressor makes a lot of noise. Always check the noise level of the compressor before buying one. If you are buying a compressor in a shop, ask them to run it, so you can hear what is sounds like.

To reduce the noise, you can make an enclosure around the compressor. Make sure you add enough ventilation holes (and a fan if necessary). An air compressor creates a lot of heat, so adequate cooling is required!

6. Tank size

Most reciprocating compressors come with a 40 – 80 gallon tank, which is fine.

A larger tank size is always better. A bigger tank means that there is a bigger compressed air buffer.

A bigger compressed air buffer is useful when you use big tools that use more air than the capacity of your compressor. Pressure will drop more slowly with a bigger air tank.

7. Compressed air filters

How clean do you need your compressed air?

Compressed air is hot, wet and dirty. Depending on your application, you need to filter it and remove water and oil.

If you use compressed air for paint-spraying, you don’t want oil, water or dust in your compressed air, the air needs to be very clean.

If you only use it for powering air tools, you don’t want water in your compressed air but you don’t really care about oil.

There are filters available to remove water (droplets), oil, and dust. For even dryer compressed air, you need to get a compressed air dryer.

8. Other options and extra’s

There is a list of options you should thing about. Do you really need them, or are they optional?

  • Pressure regulators – to regulate the tank pressure back to a stable, lower pressure
  • Size and number of air connections
  • Vertical or horizontal tank
  • Manual or automatic drains

9. Weight

Most (online) stores will drop your new air compressor on your drive way. You will need to bring it into your garage or wherever you want to place it yourself.

Your new air compressor will probably come on a wooden pallet. You can choose to keep it on the pallet, or remove the pallet.

Think about how you will bring your 600 lbs air compressor to its place before you buy it!

10. Duty cycle

Last, but definitely not least!

The duty cycle is the percentage of time your compressor can run.

Most single stage compressor have a duty cycle of only 50%. This means that when you run your compressor for 5 minutes, it needs 5 minutes to cool down.

Most dual stage compressors have a duty cycle of 100%. They can run 24 hours per day when needed.

If a compressor has a 100% duty cycle, it is often advertised. Beware when the duty cycle is not mentioned.. it is probably only 50%!

Shopping for a Portable Air Compressor

The first thing you should do is write down each tool that will work together. Next, you need to calculate the frequency of compressed air consumption and the volume of compressed air that the appliance will draw from the compressor storage tank. If this all sounds really confusing, don’t stress, it’s all revealed in this article.

Locating the perfect air compressor which will deal with the sort of jobs that you will be undertaking is often quite a tricky process. Having said that, with some standard information with respect to the way air compressors work, the terminology employed in the compressor market along with the difference between the sorts of compressors, it starts to get a whole lot easier to choose the top compressor for ones particular requirements.

Technological terms:

Being Familiar With all of the compressor technical terminology is critical when making your compressor purchase decision. Despite the fact that the quantity of compressor types is often overwhelming, selecting the right unit can be made easy by asking a few essential questions.

Performance Ratings:

Matching an air tool or tools Standard cubic feet per minute and PSI demands to an air compressors output capacity is vital. Standard cubic feet per minute or SCFM is the rate of how much air the compressor can produce in just a minute. All tools which are powered by using a compressor come with a SCFM value; this value will point out the air supply that is compulsory for optimum operation of the tool. Therefore, check the standard cubic feet per minute at 90 psi when matching your air compressor SCFM ratings.

Normal standard cubic feet per minute consumption

Air Filter Cleaner: 3

Air Hammer, light: 4

Air Hammer, heavy: 22

Air Hoist, 1000 lb: 5

Air Motor – 0.5 hp: 6 – 10

Air Motor – 1 hp: 12 – 15

The standard cubic feet per minute consumption of air tools can vary from tool to tool, several tools only have to use 1 or 2 SCFM whilst others will need 10 – 14 standard cubic feet per minute.

If you think there is the possibility that you’ll operate multiple tools at the same time, then it is evident that you’re going to really want way more power. In such a case, determine the lowest SCFM rate for your compressor by adding together the cumulative SCFM specifications for the equipment you will be operating simultaneously. To give a bit of a buffer to the calculations you will need to add an additional fifty percent on to the final number.

Air tool 1 = 2.0 SCFM + Air tool 2 = 1.0 SCFM add these together and the total is 3.0 SCFM, add the 50% buffer and we have a total of 4.5 SCFM (standard Cubic Feet Per Minute), and as a result you would be trying to locate a compressor with an SCFM rating of over 4.5 SCFM.

The smallest SCFM compressor rating can be determined by adding together the SCFM ratings of any compressed air tools which will be used at the same time. In the case when a single air tool is to be operated alone then you must go with the SCFM of the highest rated air tool.


Electric operated compressors commonly are powered by a typical 110-120V power supply. Although, air compressors that have a motor unit of more than 2 HP may have to have a 220-240V power supply. If you plan to work with your air compressor in a workshop, garage or any other confined place, you need an electric powered compressor.

Petrol operated air compressors do not rely upon electrical energy so therefore they are truly mobile. Though, there are numerous negatives with the gas powered compressors. The most important disadvantage is the fact that the petrol driven air compressors produce harmful gases and as such shouldn’t be run inside or even in any kind of confined work area. One another downside of these compressors is they need much more repairs and maintenance than their electric run counterparts.

Decibel Levels of a typical compressor:

Sound output is an important factor when purchasing an air compressor. Air compressors come with a sound levels listing within the makers specifications and if you are generally operating the device inside the house or in a small workshop you might want to decide upon a quiet machine instead of risking damage to your hearing by using a deafening air compressor. So you should find out the noise level before buying.

Plastic Injection Molding Works

Use of plastic injection mold

Plastic injection molding is the most common and widely used method for mass manufacturing of plastic products worldwide due to its convenience and ease of use. Plastic products made by this method include plastic chairs and tables, covers for electronic products and disposable spoons and knives, as well as other tableware products, for commercial consumption.

History of Injection Molding

Injection molding was originally created to solve a problem that many pool players face. The 19th century billiard balls were originally made of ivory, obtained from ivory taken from elephants. Celluloid was one of the first plastics used to manufacture billiard balls.

Procedure Explained

The scientific procedure used for the manufacture of plastic products by injection molding application is quite simple. Your plastic is melted and taken into a giant syringe. It is then put into a forming mold of a suitable shape according to the product being made and cooled for a sufficient period of time until it reaches the desired shape. However, the actual practical process of injection molding is not that simple and can be broadly divided into 3 subdivisions – injection units, mold parts and finally clamps.

The plastic pellet is gradually poured into the injection unit through the tunnel which is gradually melted and is in a fully liquid state by the time it reaches the front of the barrel. After reaching the forming mould, it is cooled to solidify into the desired fixed shape. The mold then returns to its previous original position in the machine.

All injection molded objects start with plastic pellets, which are a few millimeters in diameter. They can be mixed with a limited amount of pigment, called “dye” or with up to 15% recycled material – then the mixture is fed into an injection molding machine. Early molding units use a pusher to press from above. However, the exterior is either too hot or too cold and the smelting process is not going well. The solution to this is reciprocating threads – often considered the most important contribution no less than a revolution in the plastic product manufacturing industry.

The screw induces the shear stress required to melt the plastic – with residual heat coming from the traditional heating band surrounding the machine. When molten plastic is injected into the mold, it releases air from vents placed on the sides. The plastic, which has the consistency of honey, is thick enough not to slip through these holes, which are only a few microns wide.

Engraving witness marks on plastic products is also an important part of marketing because you need to be able to see and find multiple witness marks and dividing lines to authenticate and verify the authenticity of the product. It is made using removable inserts and proves very useful for tracking defects.

Hiring a Plastic Molding Manufacturer

The need for plastic-based products continues to increase today. As a consumer, you may not worry about the prominent injection molding process, but as a business entrepreneur, learning how to choose a mold company is essential to delivering the highest quality. The following points should be kept in mind to ensure you hire the best plastic mold manufacturer:

Product design – It is very important to have a professional product designer develop the required product design before hiring a major injection molding company. A prototype requires extensive manufacturing and testing before mass production. Most plastic mold manufacturers will have a professional to design the product, but it is advisable to get an independent designer based in your city. This helps save the time and money required during design refinement until it is perfect for use.

Materials used by molding companies – Although highlight injection molding mostly involves the injection of molten plastic into a mount of a specific shape and design, you may need to use other materials. Rubber and polystyrene are some other materials that can also be used to make molds. Make sure the plastic mold manufacturer you consult offers a wide range of molding services to meet your material needs.

High quality control – It is very important that you ensure that the company you want to recruit followers only has the highest and most stringent level of quality control because you intend to mass produce the product and low quality can lead to huge losses. One small miscalculation in the design can lead to disaster, so consult the company and discuss the matter beforehand. Another way to find customer satisfaction is to find review and feedback sites that will have the necessary information related to plastic mold manufacturers. If there is a quality problem, you will definitely find it on review and feedback websites.

Always compare services and have alternatives – While many companies prefer to stick to one plastic mold manufacturer, it’s important that you make sure you have alternatives if they don’t provide one. Checking other highlight injection molding company’s requirements and costs as it may be more attractive but don’t compromise on price, lower prices may affect the quality of the plastic molds you order.

Spending time researching what to expect from a plastic mold manufacturer will help you make the best choice when it comes to obtaining the highest quality product and service. Nowadays quality is the main concern that you should look for because low quality will definitely cost you more in the long term perspective.

Choosing a Rubber Molding Manufacturer

There are several things to consider when deciding between a rubber mold manufacturing company for a project. Businesses looking for low production costs may automatically select the lowest bid or price comparison. However, sometimes the lowest bid is less offered than a mid or higher grade custom rubber mold. This could be related to the quality of the materials or the less detail or facilities provided by the manufacturer. It can also mean that not all costs and expenses associated with making rubber molds are included in the price. For jobs assigned to offshore manufacturers, there are also other cost and communication considerations in choosing between rubber mold manufacturing companies.

Quality of Materials – There are many different types of materials that can be used to make custom rubber keypads. Lower quality can result in less durability, performance and color fastness. Products that require frequent replacement due to cheap materials can actually cost more in the long run.

ITAR Certification – For U.S. companies looking for a manufacturer that complies with International Traffic in Arms (ITAR) regulations, this narrows the field of offshore rubber molding manufacturers. Contractors manufacturing goods for use by military personnel must find an ITAR-certified rubber molding company that can manufacture the required military rubber keypads and molding components.

Shipping costs – How the product innovator receives the finished product is very important. Local delivery or parcel post is often cheaper than shipping by air or sea. Shipping overseas can often increase costs exponentially, depending on the size and weight of the item, how quickly the item must arrive and whether it needs to be returned for rework.

Communication – One of the factors that differentiate companies in the manufacture of custom rubber molds may be the fact that the two contacts speak different languages, are in different time zones and may have great difficulty with basic communication. There is a lot of detail involved in making the keypad and components, from the size to the color to the addition of a special resistant coating. Ensuring that all criteria are correct or overcoming difficulties if not can be challenging enough in the same language. With companies in countries that are on opposite sides of the universal time clock, business contacts can lose up to a day of delay.

Elements – Sometimes what one company charges for a product includes a number of perks, while another has a base price covering the most basic product with no extras. For example, one company may provide assembly at a slightly higher cost, while another ships product pieces as is for the customer to assemble with the other parts themselves. Design support and quality of work are other elements that can add to the advantages of choosing one company over another.

Plastic Injection Molding Manufacturing

Injection molding is defined as a general manufacturing process adopted to make plastic components for a wide variety of products. This method is used to manufacture parts that differ in size, application and complexity and the process involves the use of a machine called an injection molding machine along with the mold and raw plastic. The process involves melting the plastic in a molding machine along with injecting it into a mold from where it is cooled and solidified into the final product.

The advantage of using Chinese manufacturers is that there are more financial savings compared to western plastic injection or production. The cost savings involved in mold construction is around 30% to 50% when compared to US mold makers. Another advantage of them is the fast production of designs along with the very fast delivery of the first samples of plastic products.

There are other advantages such as creating a larger capacity and the possibility of inexpensive product finishes such as screen printing, sublimation technique, tampo printing, stamp printing etc. It is also economical and has the option of quick manual assembly. It offers various packaging options such as cardboard boxes, blisters or products sourced from different companies.

Other major advantages include the availability of complex parts and structures, high efficiency along with easy and simple mass production of plastic parts, flexibility in terms of materials and colors and easy engineering of the molding process. It is also the most cost-effective way to obtain plastic products as the resin cost and manufacturing process is much lower when compared to metal machining and other molding processes.

Chinese manufacturers also offer services such as advising on rapid prototyping or prototyping. They also have experience in fields such as rubber and TPR/ TPE or TPO products. They are knowledgeable in engineering plastic products and other materials along with high experience in plastic two component injection molding.

Most of the manufacturers also involve 3D CAD Design along with engineering and product development from their original idea. They also incorporate rapid prototyping with the help of CNC milling from POM, PA, ABS or other available plastic types. Molds are usually completed within 20 to 25 days and the price of plastic molds ranges from $1500 to $3500.

There are six main steps involved in mold manufacturing namely mold fitting, material baking, mold clamping, material injection, cooling and solidification of the part and ejecting. Most manufacturers also ensure quality control of products produced by plastic injection molding with inspection and analysis procedures along with complete dimensional inspection of all plastic molded components and reports sent to clients for review.

Plastic injection molding machines ensure that each plastic mold is of the highest quality and is thoroughly inspected for defects in visual, dimensional and functional aspects before shipping plastic products to clients worldwide.

Preform Mold Manufacturer

In order to improve the packaging business an entrepreneur needs to focus on certain items so quality and exceptions in existing packaging techniques. However, it is not possible until someone will pay attention to the plastic packaging technique recently introduced, and adopt innovative molding machines for superior packaging production. Due to excessive competition, the pattern of multiple containers is introduced in the regular market. PET bottle design schemes are changing at a rate that competitors are paying to be active in the market and to make products more attractive.

Preform molding has become a prerequisite for performing various plastic container operations. However, three-dimensional blow molding, hard-soft hard or soft-hard technology and co-extrusion blow molding is one of the pioneering techniques for molding blow molding plastic materials to soften the desired shape along a curve. With the help of stretch blow molding, employers can reduce cycle times and processes can also reduce operational procedure downtime.

With advances in engineering techniques, an entrepreneur can navigate through a pair of molding machines and accessories for plastic stamp molding. With the purchase of a machine, a team of experts can produce high quality molds with reference to finishing techniques. Thin wall moldings should be obtained with the modular plan and concept of the surface coating. However, in order to meet the requirements of animal diversity plastic molds and caps to serve sophisticated customer demands, 48 ​​mold cavities, 32 mold cavities, 4 cavity molds and mold inserts and basic equipment, along with accessories. However, it is advisable to start a business with a company that offers an inclusive optimization process from the analysis and problem solving of the purchased machine.

Thin wall printing machines require considerable energy and can be ordered to mention several dimensions such as height, depth and neck size of the machine, the ecstasy machine ensures accuracy in wax form for participation, which requires little maintenance. In addition, many packaging machine manufacturers supply their machines with guaranteed maintenance, etc. It is advisable to check a bit of a manufacturing company’s client list before starting a business.

Preform molding has become a prerequisite for performing various plastic container operations. However, three-dimensional blow molding, hard-soft hard or soft-hard technology and co-extrusion blow molding is one of the pioneering techniques for molding blow molding plastic materials to soften the desired shape along a curve. With the help of stretch blow molding, employers can reduce cycle times and processes can also reduce operational procedure downtime.

Technologies About the Water Pump Component

High quality products depend on excellent design and mainly depend on reliable guarantees from good manufacture. Good manufacturing has a direct relationship with perfect processing technology. Only when people choose the right processing technology will products with a high degree of accuracy be produced. Thus production costs will be reduced and production efficiency will increase. Because there are so many kinds of water pump components and their rather complicated structure, it is not easy to control the technology and processing quality. Especially for production models with multiple breeds and small numbers, the work procedures are so concentrated that more comprehensive professional knowledge is required.

The water pump components have very complex structures. The cast parts account for over 80 percent. They include iron casting, steel casting and stainless steel casting. There are a few shaft parts, only including carbon steel, chrome steel and stainless steel. Because there is water flow passage, the proper position of the flow passage should be found when people consider the base face for positioning the clamp. Or else, it will have a bad effect on the flow passage between pumping chamber and impeller and the quality of the product. Therefore, in order to ensure the accuracy of the components, the relevant clamping should be designed and the technological process will be arranged properly.

In the follow passage, something about the manufacturing technologies about the water Pump components will be introduced in detail. What comes first is about the clamping of the workpiece. Before the people begin to work, they must get familiar with the product design document, process file and technological equipment. Then when people install the holding fixture on the desktop, the locating surface should be cleared and meanwhile the relative position should be found properly. What’s more, the force to fasten the workpiece should be suitable. The working point of the clamping force must be through the supporting surface and near to the working surface. Next, it is about the requirements for the processing.

According to the rules about the technology, material, accuracy, knife tool and so on in the document, the operator should select the proper process route and cutting data. Besides, for the size having the tolerances, it should be processed according to the middle tolerance during the process. The burr produced in the working procedure should be removed in the corresponding procedure. In addition, in the cutting process, if there is some abnormal sound, it is better to stop the cutting and check the system carefully. Only the qualified workpiece can be entered the next procedure.

In conclusion, it is reported that a lot of problems about the water pump component are related with the bad manufacturing technologies. From this point, the importance of the technology can not be overlooked. Although the manufacturing technologies are changeable, there are still rules. The main principle to set the technology is as follow: grab the key point-select the standard properly; seize the keystone-adopt the suitable assurance; decide the method-choose the right process route.