Product Description
PET (Polyethylene Terephthalate) Resin is cream or pale-yellow crystal, with smooth and shiny surface. Resistance to creep deformation, fatigue resistance, abrasion resistance and dimensional stability are perfect. Small wear and tear but high hardness, its toughness is the largest in thermoplastic. The electrical insulation of PET is perfect and little be affected by temperature, however, poor corona resistance. PET is non-toxic, weather resistance, and anti-chemical stability is very good. PET is low water absorption, resistance to weak acids and organic solvents. Intolerance of hot water immersion and alkali.
Feature:
1.Oil resistant, fat resistant, acid resistant, alkali resistant, resistant to most solvents.
2.Excellent resistance performance of high and low temperature.
3.Non-toxic, tasteless, CZPT and safety.
4.Transparent, UV blocking, good glossiness.
Specification :
|
PET RESIN Bottle-grade Polyester Chips |
||||
|
Item |
Unit |
Index |
Test Method |
|
|
I.V. |
dL/g |
0.80 ± 0.02 |
Reagent Ratio |
|
|
Crystallinity |
% |
≤ 60 |
|
|
|
Color value |
L |
|
≥ 83 |
HUTERLAB – |
|
|
b |
|
≤ 1.0 |
HUTERLAB – |
|
Content of COOH |
mol/t |
≤ 26 |
Photometric Titration |
|
|
Content of acetaldehy-de |
ppm |
≤ 1.0 |
|
|
|
Dust content |
ppm |
≤ 100 |
Weight Method |
|
|
Melting point |
°C |
243 ± 2 |
DSC |
|
|
Wt. of 100 chips |
g |
1.55 ± 0.10 |
Weight Method |
|
| PET resin Bottle-grade Polyester Chips | ||||
| Item | Unit | Index | Test Method | |
| I.V. | dL/g | 0.85 ± 0.02 | Reagent Ratio | |
| Crystallinity | % | ≤ 60 | ||
| Color value | L | ≥ 82 | HUTERLAB – | |
| b | ≤ 1.0 | HUTERLAB – | ||
| Content of COOH | mol/t | ≤ 35 | Photometric Titration | |
| Content of acetaldehy-de | ppm | ≤ 1.0 | ||
| Dust content | ppm | ≤ 100 | Weight Method | |
| Melting point | ºC | 243±2 | DSC | |
| Wt. of 100 chips | g | 1.55 ± 0.10 | Weight Method | |
1. Film & sheet :
all kinds of food, drugs, non-toxic sterile packaging materials;
textiles, precision instruments, electrical components of high-grade packaging materials;
audio and video tapes, film, computer floppy, metal coating and photographic film And other electronic and mechanical fields such as electrical insulating materials, capacitor films, flexible printed circuit boards, and membrane switches.
2. Application of packaging bottles: its application has been from the initial development of carbonated beverages to the present beer bottles, edible oil bottles, condiment bottles, medicine bottles, cosmetic bottles.
3. Electronic and Electrical Appliances: manufacturing connectors, coil bobbin, integrated circuit case, capacitor case, transformer case, TV accessories, tuner, switch, timer shell, automatic fuses, motor bracket and relays.
4. Auto parts: such as distribution panel cover, ignition coil, all kinds of valves, exhaust parts, distributor cover, measuring instrument cover, small motor cover, etc., can also use PET excellent coating, surface gloss and rigidity, Manufacture of automotive exterior parts.
5. Machinery and equipment: manufacturing gears, cams, pump housing, pulley, motor frame and watch parts, can also be used as microwave oven baking pan, a variety of roof, outdoor billboards and models.
Packaging, storage and transportation
It is packed in 0.5T woven bags or 25kg woven bags.
During transportation, it is not allowed to be exposed to the sun or rain, and mixed with sand, broken metal, coal and glass shipment, not to be mixed with toxic, corrosive or flammable materials. It is strictly forbidden to use sharp hooks during loading and unloading.Do not throw the tools to avoid damaging the package.
It should be stored in a clean, cool, dry and ventilated warehouse,Keep away from heat and direct sunlight.
If it is stored outdoors, it should be covered with tarpaulin. The storage period is from the date of production,generally no more than 3 months.
FAQ
Q: Are you trading company or manufacturer?
A: We are trader with our own factory.
Q: Can you support OEM /ODM?
A: Yes, we can make granules & compound according to your specification.
Q: How long does it take for production?
A: It’s up to your quantity. Monthly 15-30 days.
Q: What’s the quality assurance we provided and how do we control quality?
A: 100% inspection in production lines, establishing procedure to check product quality of each stage in the manufacturing process.
What makes pulleys so important?
A pulley is a simple tool that makes it easy to lift or move heavy objects. There are many uses for this tool, but let’s take a look at their mechanical advantages. There are several types and many applications, along with their benefits and costs. So what makes them so important? Read on to find out! Below are some of the most common uses for pulleys. Let’s dive into them.
Mechanical advantage
If you’ve ever used rope and pulley systems, you’ve probably noticed their usefulness. A 3:1 mechanical advantage system is like a 300-pound load being moved 1 foot up by 3 feet of rope. Then you can imagine using the same rope to get into a small space. The same principle applies to limited spaces, and a simple mechanical advantage system is just what you need for this purpose.
Assuming frictionless bearings, a single movable pulley can have 2 mechanical advantages. It is attached to a heavy object and requires the pulling force exerted by the jack to lift the heavy object. However, when you use a compound pulley, the force exerted on the rope to lift the object changes direction. The 3 factors used to measure machine efficiency are force, distance, and relative motion.
The mechanical advantage of the pulley is that it reduces the effort required to lift weights. When the rope is attached to the 2 wheels, applying a force of 500 Newtons can lift a mass of 100 kg. This mechanical advantage is why 2 rings in a pulley are better than one. Therefore, using a pulley system will save you energy. You can also use branches instead of ropes and pulleys.
type
There are several different types of pulleys. They can be simple or complex, depending on how they are connected. Simple pulleys have a grooved wheel on 1 end and are attached to an axle. These pulleys are used to lift heavy objects. They are often found on sailboats, and you can even see them on construction sites. On the other hand, stationary pulleys are attached to stationary structures, such as flagpoles. Fixed pulleys can also be used to lift loads from trucks or trains. Pulleys are also commonly used in wells.
Fixed pulley systems use rollers or single wheels. These pulleys are usually made of nylon or wire rope. They are used in heavy duty applications. They are also used in electric motors. A “V” pulley requires a “V” belt to transmit power. Some of these pulleys have multiple “V” grooves to reduce the risk of power slipping. Once installed, fixed pulleys are suitable for many applications.
Simple pulleys are simple pulleys. It has a pulley mounted on an axle and a rope at 1 end. Rope can be used to pull objects, while plastic pulleys can carry lighter loads. There are 2 main types: heavy duty and simple pulley systems. In either case, their function is the same: they change the direction in which the seat belt is fastened. So when comparing the two, it’s easy to decide which 1 is best for you.
application
Pulley systems are simple machines used for a variety of industrial and mechanical tasks. Its design parameters and benefits have improved over the years, but they remain essential for many applications. Let’s take a look at some of the most common applications of pulleys. The applications for pulley systems are endless, from construction to mining, from transportation to packaging. Read on to learn more!
Pulley systems are often used to lift large objects, such as blocks, that might otherwise be too heavy to lift. It also makes the exploration process easier by helping people pull heavy objects into place. It is also widely used on sailing ships. Due to its low cost of use and no need for lubrication, it is a practical choice for many applications. It can be used to lift heavy objects and support long ropes.
The pulley system allows you to change the force required to move the object. For example, a two-wheel pulley system is especially useful for reducing the effort required to lift large objects. The mechanical advantage increases with the number of wheels in the system. In addition, the mechanical advantage of a two-wheel pulley system depends on the ratio of the load weight to the number of rope segments in the system.
cost
In most cases, an idler replacement will cost around $150, but the exact cost will depend on several factors, including the make and model of the car. The cost also depends on the type of idler you need and the cost of the OEM parts. Some pulleys are easy to replace at home, while others require specialized tools, such as pulley wrenches. The chart below shows the cost of popular vehicles. Prices are valid at the time of writing.
The diameter of the pulley is also important, this should be about 60% of the diameter of the active pulley. You can also purchase compensating pulleys at factory prices. Be sure to select the correct size before placing the pulley on the machine. Also, make sure you have enough space for the pulleys. Once you have the desired pulley size, you can determine the best type of belt to install.
While this method is the most common type of belt drive, there are other methods of spinning cup blanks directly from a flat metal disk. One such method is described in US Patent No. 5,500,31. US Patent No. 1,728,002 and shows a method of making a dynamically balanced V-groove pulley. Using a headstock die with sliders increases the cost of the pulley. In addition, different cup blanks require different molds.
lubricating
The lubrication of pulley bearings is relatively simple. The pulley itself rotates smoothly with little vibration. Bearing contact loads are relatively low, and well-lubricated pulleys operate near ambient temperatures. Here are some tips for properly lubricating pulley bearings. Make sure to lubricate the nozzle before applying grease.
Check grease, elastic ring, pulley bearing clearance once a year. If the elastic ring of the pulley is damaged or the roller bearing on the associated pulley is damaged, replace the pulley. Also, check the running noise of the pulleys to see if they are making noise. Check the bearing, damage to the elastic ring may indicate bearing failure or roller failure.
Proper lubrication is critical to the life of the rotating pinion. Avoid exposure to sunlight or water. Protects the pinion meshing area from hard impurities. Liaise with crane operators and lubricators during maintenance and lubrication operations. They should know how to avoid pitfalls in the lubrication process. In case of malfunction, please contact service personnel and take necessary measures.
Compound Pulley System
A compound pulley system is used to lift heavy objects. These systems can use ropes or cords of different sizes. In general, the total weight of all ropes must be less than the weight of a single rope. The system can be used in large areas, but may not be suitable for smaller spaces. To learn more about compound pulleys, read on! Here are some helpful tips. 1. Understand the difference between single wheel and compound wheel
A composite pulley system consists of 3 components: a drive pulley, 1 or more driven pulleys, and 2 pulleys. The drive wheels are usually connected to shafts that are connected to the engine or transmission. The driven wheel is a separate unit mounted on the same shaft as the drive wheel. A compound pulley system helps lift heavy loads. These pulleys are the most common type of pulley system in use today.
Composite pulley systems are widely used on construction sites. They save energy by spreading the weight of heavy loads over multiple smaller loads. This means that the elevator does not have to use high-capacity lifting equipment. Additionally, the compound pulley system allows users to easily adjust power distribution to meet their individual needs. They can also use more than 2 ropes if necessary. This increases the range of motion of the lift arm.
