Polyethylene General FAQFor Commercial questions, suppliers should contact their identified Sourcing Agent directly. For general questions regarding Purchasing policies, or contract implementation issues, suppliers should contact their Regional Purchasing representative.
For Transactional questions, suppliers should contact their service center using the number contained on the Purchase Order.
High-density polyethylene (HDPE) is used to make many types of bottles. HDPE has good barrier properties; it%q%s well suited for packaging products with a short shelf life and has good chemical resistance. It is identified with the number 2.HDPE is used in milk, juice, and water bottles along with household items such as shampoo, conditioner, detergent, cleaners, motor oil, and antifreeze. It can also be found in pipe, tiles, plastic film and sheeting, buckets, crates, and recycling bins.
PET is a polymer of ethylene glycol and terephthalic acid. Pellets of PET resin are heated to a molten liquid, which can be easily extruded or molded into almost any shape. PET was first synthesized in the U.S. during the mid-1940s by DuPont chemists searching for polymers that could be used to make new textile fibers.
Yes. PET bottles are cleared for both single and repeated use by the FDA and other world health-safety agencies. It%q%s a common misconception that refilling or reusing a PET bottle will somehow cause the bottle to degrade or to release harmful substances. PET is a stable, inert material that doesn%q%t biologically or chemically degrade with use, and is resistant to attack by micro-organisms. Regulatory authorities have tested PET bottles and found no harmful substances in either new or re-used PET bottles. PET has been approved as safe for contact with foodstuffs and beverages by the FDA, Health Canada, the European Food Safety Authority and virtually every other health-safety agency in the world. It has been used for food and beverage containers for decades without any known adverse effects. Extensive studies of PET and PET packaging have repeatedly shown it to be safe PET contains no phthalates. Phthalates (i.e., phthalate ester plasticizers) are not used in PET, and PET is not a phthalate. Plasticizer phthalates are sometimes used to soften other types of plastic, but they are not used in PET. Some consumers may have incorrectly assumed that PET is a phthalate because PET's chemical name is polyethylene terephthalate. Despite the suffix, PET is not a phthalate. Phthalates are low molecular weight monoesters made from ortho-phthalic acid. By comparison, PET is a high molecular weight polyester made from tere-phthalic acid. Chemically they are very different. Very small amounts of antimony compounds are used in the production of both PET and glass. Antimony oxide is typically used as the catalyst in making PET, which is chemically bound into the polymer at very low levels. Over time and with extended exposure to heat, trace amounts of antimony may migrate into water or other beverages bottled in PET. Laboratory tests on the migration of antimony compounds from PET have consistently found these levels far below all safety thresholds - typically less than 1/40th of the World Health Organization's daily safe-consumption level for drinking water.
Although the PET recycling rate continues to grow in both the United States and Europe, the Europeans seem more attuned to the value of recycling packaging materials. The U.S. recycling rate for PET was approximately 29% in 2011. By comparison, the 2011 recycling rate in Europe was 51%.
Although the PET recycling rate continues to grow in both the United States and Europe, the Europeans seem more attuned to the value of recycling packaging materials. The U.S. recycling rate for PET was approximately 29% in 2011. By comparison, the 2011 recycling rate in Europe was 51%.
PET can be recovered, and the material reused, through a series of special washing processes or by a chemical treatment to break down the PET into its raw materials or intermediates, which are then purified and converted into new PET resin.
Yes. It is safe when manufactured, used, or incinerated. It helps preserve water and electricity as there is no water loss through its fused joints. No toxins are released during the creation or disposal of PE pipe.
Yes. Virtually every municipal recycling program in North America and Europe accepts PET bottles and containers, which can be easily identified by a triangle-shaped symbol and the number "1" stamped or molded into the bottom or side of the container.
Yes. Recycling used PET bottles and jars into new food-grade PET bottles and containers is a key example of the environmental benefits and sustainability of PET as a packaging material. The development of modern and efficient plants dedicated to the closed-loop recycling of PET bottles continues to increase around the world.
PET containers are popular for packaging sodas, water, juices, salad dressings, cooking oil, peanut butter, shampoo, liquid hand soap, mouthwash, pharmaceuticals, even tennis balls. Virtually all single-serving and 2-liter bottles of carbonated soft drinks and water sold in the U.S. are made from PET. Special grades of PET are used for carry-home prepared food containers that can be warmed in the oven or microwave.
Stress relieved grades typically work better in parts that have undergone extensive fabrication.
The Polyethylene (PE) material used for making Water Storage Tanks is Linear Low-Density Polyethylene (LLDPE) having density range of 910.0 -940.0 kg/ m3. The particular PE material has higher tensile strength, impact strength and puncture resistance than LDPE.
PVC has a limitation of withstanding higher temperature. Maximum it can withstand is 450C subjected to a de-rating factor as low as of 0.45 being applied over the recommended operating pressure at 200C.
To make the same material withstand high temperature, a portion of hydrogen in its molecule is replaced with chlorine in a post production process. This transformed material having characteristic of higher temperature resistance, higher tensile strength, good toughness and an exceptional chemical resistance is now called CPVC or Chlorinated Poly Vinyl Chloride.
This material can withstand a temperature as high as 820C and is now exclusively used for manufacturing of pipes for hot water plumbing systems and sprinkler systems for fire fighting. Fittings should be stored out of the direct sunlight and in the original packing until immediately before use. Couplers should be stored on their flat ends. PVC pipe meets or exceeds all required health and safety standards and regulations governed by the U.S. and Canadian Safe Drinking Water Acts and other international statutes. Its use is monitored by independent agencies like NSF International — and government bodies like the U.S. Environment Protection Agency ensure its safety through mandatory regular testing. The U.S. Food and Drug Administration and Consumer Product Safety Commission have confirmed that PVC is a safe product. There are basically two: Polyvinyl chloride (PVC), which is plastic and ductile iron, which is metal and includes iron, brass, and copper. The raw material used in Pars Ethylene Kish polyethylene manholes is 3840, also can be used HDPE and LDPE based on producing with rotational molding method, like wise all bolts and gaskets are hot galvanized. |