All Suppliers capable to supply the above mentioned plastic material in prime, recycled or scrap form, must regster their willingness to do so by issuing the Offer to Sell. The Offer is not legally binding and only defines to imply that the supplier is offering goods in his possession and will supply such goods over a defined period of time for purchase consideration by us. If such purchase is attempted, it is subject to final contract.

All information given is strictly held confidential even against competing supplier unconditionally.

Terms and Conditions when offering Plastic material to us

(1) Only suppliers in possession of goods (owners) may apply to provide Offer to Sell
(2) We will only consider modes of delivery defined as FOB from named port of shipment or FAS, FCA and EXW offers.
(3) All offers must be assured for a minimum term supply.
(4) Seller’s offer is not legally binding and is subject to final contract
(5) Only PSI (Pre Shipment) Inspection considered at supplier expense – If supplier is not prepared to offer PSI inspection, cost fo the account of the buyer accepted upon further discount on initial price provided.
(7) Rules of Trade: English language, English Law in port or fully, UCP 600, Incoterms 2000, URC522 Collection.
(8) Offer to Sell is provided to us so that assurance of Supply is proven as being genuine. It is up to our own discretion to purchase the goods offered accordingly.
(9) Minimum lot must be offered; – Once such ofer to sell is accepted by us, we will buy such total lot assured as required within the period of time applied as needed, shipment per shipment at quantities requested.
(10) All other Terms and Conditions as apparent on Offer and final Contract or Invoice.

Send us your offer

If the above terms are acceptable please send your offer to:

email: info @ RawPolymers.com
fax: +43-316-231-100021

Plastics

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HDPE plastics are produced from a component of crude oil, naphtha, which is cracked (heated at very high temperatures) in order to extract the ethylene gas which is released when the chemical structure of naphtha deteriorates. The ethylene gas is then polymerized, a process which involves the free gas particles joining together to produce long chains of ethylene molecules.

There are many different types of polyethylene. HDPE is a particular type of polyethylene with a very dense linear structure which gives it an increased tensile and molecular strength. HDPE is normally defined as being polyethylene with minimum density of 0.941 grams per cubed centimeter. Within the category of HDPE plastics, molecular weights range from 100,000 to 500,000, which is where the great variance in HDPE grades arises. Common grades of HDPE plastics include blow molding grade HDPE plastics, injection molding grade HDPE plastics, film grade HDPE plastics, and pipe grade HDPE plastics. Each of these grades have slightly different physical properties, the most notably important one being MFI, or melt flow index. Melt flow index describes how quickly the HDPE plastic flows when in liquid form, applications such as pipe making and blow molding require a highly viscous slow flowing HDPE plastic, whereas injection molding requires a quickly flowing HDPE resin.

HDPE plastics were first invented in the 1950’s, though it took some time to discover ways to reliably produce large amounts of homogeneous HDPE, as the processes under which HDPE is produced must be tightly controlled in order to produce the different grades of HDPE.

Ethylene naturally polymerizes at high temperatures and pressures, but it is not commercially viable to operate facilities under these conditions. So instead, catalysts are used to lower the temperature at which polymerization will take place, and also direct the type of polymer which results. HDPE’s largely linear structure with little molecular branching is commonly produced by Zeigler-Natta catalysts, or chromium catalysts.

HDPE lends itself well to recycling, and a great deal of reprocessed HDPE, recycled HDPE, and regrind HDPE is available on the market. The bulk of recycled HDPE plastics are post consumer scrap reclaimed from kerbside recycling programs. Millions of tons of HDPE plastic milk bottles and other household vessels are collected and recycled every year. For the most part, recycled HDPE plastics are equally as useful as virgin HDPE plastics, though they may not be used in food contact applications. There is some risk that contaminants found in the scrap HDPE from which recycled HDPE is made may pass through the various cleaning and filtration steps and degrade and contaminate the end product. If one is dealing with a reputable supplier, and the specific application is not overly intensive, recycled HDPE is an economically sound alternative to virgin HDPE plastic.

HDPE Plastic Supplier

We source HDPE material from several manufacturers world wide. Please contact us through the form below and let us know your detailed requirements. We will get back to you with our offer and HDPE price quote

HDPE, Plastics

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Fortunately fort he environment and manufacturers seeking low cost sources of HDPE, HDPE is a highly recyclable material, which when handled correctly can be recycled several times before it begins to show any signs of breaking down. It has a very strong molecular structure which can stand multiple transitions from the liquid to the solid phase without losing structural integrity.

The process by which HDPE regrind is made essentially a long cleaning process. Post consumer scrap HDPE contains all matter of contaminants from food scraps to metals to glass and even other plastics. Because the kerbside pickup recycling process from which the bulk of HDPE is reclaimed is inherently flawed, being carried out in its initial stages by private citizens, a great deal of effort must go into making sure the HDPE regrind is as close to being pure HDPE as is possible before it is on sold to manufacturers.

The first stage of turning reclaimed scrap HDPE into useful HDPE regrind is removing the large contaminants from the scrap HDPE. Typically, scrap HDPE will arrive at the recycler in large bales, which are then broken open. There are different types and grades of scrap HDPE bales. Some have been sorted and cleaned in advance, with labels and lids removed, others are sold as is, with contaminants, labels, and lids still intact.

Once the bales are broken up, the HDPE scrap is put onto a trommel. The trommel is a rotating device that shakes many of the larger contaminants free of the HDPE. Pieces of glass, stones, metals, and a great deal of dirt are removed via the trommel.

Once the bulk of the large contaminants have been removed, the HDPE scrap must be sorted to separate it from non HDPE plastics which are often mistakenly placed in the bale, and other similar foreign objects visible to the human eye.

When it has been ascertained that the HDPE scrap is now comprised almost entirely of HDPE plastic, and any remaining contaminants are too small to be simply picked out, the HDPE scrap is shredded, cut up into small pieces and subsequently cleaned. Chemical solutions, detergents, and high temperatures are all employed in order to clean up the HDPE. This stage is where many stubborn labels and adhesives are finally removed from the HDPE stream.

Float/sink technology is then used to separate HDPE from the dirt and other contaminants which have been released in the washing process. In the float/sink process the washed scrap HDPE is sent into a water tank. HDPE is lighter than water, so it floats, whereas many contaminants, such as small pieces of metal, glass, or rock are heavier than water, and sink to the bottom. The HDPE is then scooped off the top of the water and dried.

The dryer used to dry the shredded HDPE is a large industrial spin dryer which pumps hot air around the HDPE, drying it and making it ready for the final processing before sale.

The HDPE might be further cut up into smaller pieces and sold as HDPE regrind, or it may undergo melt processing to make HDPE pellets or granules. Melt processing involves melting the HDPE regrind down and passing it through a series of filters to remove the last of the contaminants before extruding the melted HDPE through a die and cutting it into pellets. HDPE which has undergone melt filtration is the cleanest form of scrap HDPE, however HDPE regrind is often used as a raw material in applications where very high levels of purity are not required.

HDPE Regrind Supplier

Please contact us through the below form and let us know your detailed requirements. We will get back to you with current HDPE regrind availability and price quote

HDPE

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Virgin HDPE granules are the premium source of HDPE for all HDPE applications. A product of crude oil, virgin HDPE is suitable for use in food packaging, toys, furniture, pipes, and many more applications. Virgin HDPE typically comes in the form of virgin HDPE granules, which must be melted by the end user to obtain liquid HDPE which can then be used in blow molding, injection molding, and the production of film or pipes. Virgin HDPE granules are advantageous in many respects. Their small size results in a quicker melt time, and also a more homogeneous HDPE mix, and transport is also made more simple by the free flowing nature of HDPE granules.

Production Of Virgin HDPE Granules

Virgin HDPE is made by ‘cracking’ naphtha. When naphtha is heated to high temperatures its molecular structure breaks down and it releases ethylene gas. Ethylene is the sole ingredient of HDPE, HDPE being an acronym standing for High Density Polyethylene. Of course, in gaseous form ethylene is of little use, so it must be transformed into polyethylene via one of several reactions.

When ethylene is exposed to high temperatures and pressures, it naturally forms long chains and becomes polyethylene. It is not commercially viable for ethylene to be heated to the great temperatures and pressures needed for this reaction to take place naturally however, so commercial production of HDPE involves catalytic reactions in which a catalyst is added to the ethylene gas to enable polymerization to take place at lower temperatures. Different processes use different catalysts, but all produce high quality HDPE. There is no great difference in the type of HDPE produced during the different types of catalytic reaction, as a catalyst is by definition a substance which is not expressed or included in the product of a reaction.

The Philips catalyst slurry process and the Ziegler catalyst solution process are two of the most commonly used processes in the manufacturing of HDPE today. It should be noted that these processes are capable of producing many different types of polyethylene, from low density LDPE to high density HDPE. Various ‘grades’ of HDPE can also be produced by controlling various elements of the reaction.

The result of the polymerization of ethylene is a translucent viscous liquid which quickly cools and hardens to form a solid. Before the newly produced virgin HDPE solidifies, manufacturers pipe the liquid virgin HDPE through a die and cut it into small sections, which cool to form small solid virgin HDPE granules.

HDPE Granules Supplier

We source virgin (and reporcessed) HDPE granules of all grades. Please contact us through the below form and let us know your detailed requirements. We will get back to you with current HDPE availability and price quotation

HDPE

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Recycled HDPE pellets are HDPE pellets made from reprocessing scrap HDPE. Recycled HDPE pellets are of a similar quality to virgin HDPE pellets in terms of chemical and physical integrity, though there are restrictions on scrap HDPE products being used to package foodstuffs. There is also some risk of contamination or structural weakness due to poor handling that should be kept in mind when looking for a reliable supplier of quality repro HDPE pellets.

The bulk of scrap HDPE comes in the form of post consumer HDPE. Post consumer HDPE products are those HDPE products which have been manufactured for use in consumer applications, such as milk bottles, shampoo bottles, and other kinds of household receptacles. These products are used for their intended purpose, then reclaimed from recycling programs. Other scrap HDPE is reclaimed from industrial sources, coming in the form of plastic drums, or off cuts and rejected malformed HDPE products from consumer production lines.

As a result of the various sources of scrap HDPE, the quality and appearance of various types of recycled HDPE pellets is also varied. Some recycled HDPE pellets may be clear and translucent in color, originating from well sorted post consumer HDPE scrap. In other cases, the recycled HDPE pellets may have a raw grey color, or dye may be added to the mix to create a homogeneous coloration. It should be noted that color alone does not reflect grade or quality of recycled HDPE pellets, though translucent recycled HDPE is generally regarded as being a safer bet, and lends itself better to applications where asthetics are important.

Producing Recycled HDPE Pellets

Recycled HDPE pellets start life as HDPE scrap. The scrap must be washed and sorted, then shredded and washed again. Various processes are then undertaken to ensure that the shredded HDPE is clear of the bulk of contaminants such as dirt, metals, and foreign plastics. This is the first part of perhaps the most important stage of HDPE recycling, as contamination can make a batch of HDPE effectively useless.

Shredded HDPE, or HDPE regrind as it is sometimes known, is then sent into a heating and extrusion chamber. This is a long barrel shaped device with a screw running down the length of it. The barrel is heated, and as the HDPE is carried through the chamber by the screw, it melts down into liquid HDPE.

Filters contained in the chamber catch any remnants of contaminants in a process called melt filtration. Good melt filtration is essential to the production of high quality recycled HDPE pellets. Though the bulk of contaminants are removed prior to melting, the smallest contaminant particles inevitably pass through the initial cleaning and filtering stages, and are only removed during the melt filtration process.

Due to its molecular structure, if heated to the correct temperature, HDPE can be melted down and reformed into new products many times with negligible loss of structural integrity, however the melting process must be carefully monitored to ensure that the HDPE stays within the correct temperature range so that it does not solidify prematurely, or become overheated and start to break down.

At the end of the chamber is a die through which the liquid HDPE is extruded. A blade slices the tubes of liquid HDPE into pellets, which are then cooled. This can be achieved by either extruding the pellets under water, or having the pellets drop into a water bath, occasionally circulated air is used to cool the pellets, but this is generally a slow and cost ineffective practice.

Grades of Repro HDPE Pellets

Recycled HDPE pellets come in all grades. It is possible to purchase injection molding grade recycled HDPE pellets, blow molding grade recycled HDPE pellets, pipe grade HDPE pellets, the list goes on.

When ‘grades’ are referred to, what is really being spoken about is the MFI, or Melt Flow Index. Melt flow index is a measure of how viscous HDPE is when melted, and is related to the molecular density of the HDPE. Very dense HDPE has a low MFI, and becomes thick and slow flowing when melted. This type of HDPE is suitable for blow molding applications. Conversely, HDPE with a high MFI becomes very runny when melted, and is more suitable for applications such as injection molding.

Repro HDPE Suppliers

We source reprocessed HDPE pellets from several suppliers world wide. Let us know your detailed requirements and we will get back to you with current offers and HDPE price quote

HDPE

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However, in many cases, scrap HDPE is still underutilized in manufacturing today. Ideally scrap HDPE could be used for the manufacturing of almost all products besides those which come in contact with foodstuffs. Scrap HDPE has been declared unfit as a material for packaging which contains foodstuffs as a result of the perceived risk of contamination that could possibly have taken place during the life of the HDPE prior to being recycled.

So then, why is scrap HDPE not being used in more applications? The problem is not the processing of scrap HDPE, or the willingness of manufacturers to use it in their products, rather it is access to the scrap HDPE itself. Many businesses make use of post industrial scrap HDPE, which largely comes in the form of offcuts from the manufacturing operations of other companies. However, the largest potential source of scrap HDPE is post consumer scrap HDPE, that is, HDPE products such as milk bottles, shampoo and conditioner bottles, whipped topping tubs, the list goes on. Many thousand tonnes of HDPE products are newly produced per year, however not nearly enough of them are making it back into the recycling programs that could turn HDPE refuse into new HDPE products.

It is not only traditional manufacturers who seek to use scrap HDPE in their products either. Environmentalists, and green companies are also turning to scrap HDPE as a source of raw material. Recycling HDPE products, especially post consumer products such as shampoo bottles, detergent bottles, fabric softener bottles, and milk bottles saves tonnes of landfill space every year. It is still lamentably true however, that much of the HDPE products produced in North America will not be turned over for recycling, and will find their way into landfills, exacerbating the environmental problems that the USA, much like many other countries, faces on a day to day basis.

Recycling education programs have been in place since the 90’s, and since that time there has been a steady increase in the volume of recycled material that is collected from consumers. There are still some areas of confusion however, as over the years demands for various types of plastics increase, and plastics that were once deemed unrecyclable become recyclable, keeping the consumer informed and motivated to set their discarded HDPE products out for recycling is an important concern for all members of the supply chain.

An additional problem facing the scrap HDPE market is collection. Efficient recycling programs are in place in many urban environments, but there are still swathes of the country where there are few recycling facilities, and no kerbside collection services. Consumers can hardly be expected to make special trips to recycle their plastics, so it is vital that local government bodies take the lead when it comes to setting up programs for the collection of plastics.

If local government will not step up to the recycling plate, there is an opportunity for private enterprise to provide consumers with bins for their plastics, and scheduling a weekly pick up. For this outlay, a private enterprise can reasonably expect to make a sizable profit on plastics which are discarded and can be collected for simply the cost of collection, and can then be on sold at a profit as either baled scrap HDPE, or processed into scrap HDPE flake or regrind.
Post consumer scrap HDPE is perhaps the ideal recycling model, and an answer to not only the problems of environmentalists, but also of consumers and manufacturers alike. Making use of post consumer HDPE protects the environment, cuts costs for the manufacturer, and can also save the consumer money in the long run, as manufacturers are able to price their products at a lower rate due to the savings they have made by using post consumer scrap HDPE.

Post Consumer Scrap HDPE Prices

To get a list of currently available post consumer HDPE Scrap supply and prices please contact us by using the below form

Glossary, HDPE

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Inner Tubes
Scrap inner tubes are inflatable rubber bladders (balloons) which are inserted into the casting of a pneumatic tire and filled with air so that the tire gets it’s final shape. Inner tubes are mostly made of Butyl – material which is impervious to air leakage.

Bagomatic Bladders
Is another word for the butyl rubber pneumatic inner tube which is used on truck and tractor tyres.

Butyl inner tube Scrap
All parts of a rubber tyre can be recycled and are in demand by our partners. The inner tube or bagomatic bladder is made of Butyl. At the moment we buy and sell about 300 metric tons of scrap inner tubes per month. If you are a supplier please contact us.

Buy scrap inner tubes
To get a list of prices and currently available stock of scrap butyl bagomatic bladders please contact us through the below form.

Rubber

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HDPE:
High Density Polyethylene (HDPE) is used for many packaging applications such as snack food packages and cereal box liners, in bottle form as milk and non-carbonated beverage bottles and in injection-molded tub form, for packaging margarine, whipped toppings and deli foods. HDPE has good chemical resistance, because of that it is also used for as packaging for industrial chemicals such as detergents, bleach and acids.

HDPE Pellets:
HDPE resin pellets are small granules usually in shape of a cylinder or a disk with a diameter of a few milimeters. These High Density Polyethylene particles are industrial raw material transported to manufacturing sites where consumer products are made by re-melting the granules and molding them into final products.

HDPE Pellets use:
High Density Polyethylene pellets are used as raw material in production of end user products made from HDPE plastic. Four processes which take HDPE pellets as input are:

HDPE Injection molding: Plastic pellets or granules are fed from a hopper into the heating chamber. An extrusion screw pushes the HDPE pellets through the heating chamber, where the mechanical work and hot sidewalls melt the plastic. Material is softened into a fluid state then at the end of this chamber, the resin is forced at high pressure into a cooled, closed mold. When the HDPE cools to a solid state, the mold opens and the finished product is ejected. This process is used to make products such as yogurt containers, butter tubs, closures and fittings.

HDPE Blow molding: This is a process used in conjunction with extrusion or injection molding. In one form, extrusion blow molding, the procedure forms a continuous half-molten tube of thermoplastic material. A cooled mold is clamped around the tube and compressed air is blown into the tube to conform the tube to the interior of the mold and to solidify it. The goal is to make a uniform melt, form it into a tube with the required cross section and blow it into exact shape of the product. The process is used to make hollow HDPE products and its main advantage is the ability to produce hollow shapes without having to join two or more separately injection molded parts. This method is used to make products such as milk bottles and commercial drums. Another blow molding technique is to injection mold an intermediate shape called a preform and then heat it and blow the heat-softened HDPE into the final shape in a cooled mold. This is the process to make soft drink bottles.

HDPE Extrusion: HDPE pellets or granules are first loaded into a hopper, then fed into an extruder, which is a long heated chamber, through which the HDPE is moved by the action of a continuously revolving screw. The material is melted by a combination of heat from the mechanical work done and by the hot chamber wall metal. At the end of the chamber, the molten plastic is forced out through a small opening to shape the finished product. As the HDPE product extrudes from the opening, it is chilled by air or water. Plastic bags and films are made by extrusion manufacturing.

HDPE Rotational Molding: This process consists of a closed mold mounted on a machine capable of rotation on two axes simultaneously. HDPE pellets are placed in the mold, which is then heated in an oven to melt. Rotation around both axes distributes the molten HDPE into a uniform coating on the inside of the mold until the part is set by cooling. This process is used to make hollow products like kayaks or large toys.

Price of HDPE Pellets:
If you are looking for HDPE pellets price or a list of HDPE suppliers, please fill out the form below and we will send you more information.

Glossary, HDPE

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• High Density Polyethylene
• Medium Density Polyethylene
• Low Density Polyethylene
• Linear Low Density Polyethylene
• Polypropylene

We deliver the highest quality Prime (Virgin) resins, as well as Recycled (shredded or pelletized) plastic material.  We also supply post-industrial sorted and baled scrap for recycling. Our main goal is to deliver the highest quality Plastic material at the most competitive prices while providing our customers with exceptional service and seamless logistics.

Our services include scrap transportation, universal scrap handling, locating the best suppliers, price negotiation, quality inspection, handling of paperwork and logistics, purchase and sale of post industrial and post consumer materials. We have been working in this industry as independent agents for many years. In 2001 we finally decided to combine our skills, experience and come together as highly efficient and successful international team – Raw Polymers Ltd.

Our Mission Statement

To become a recognized global leader in providing raw plastic material at prices and conditions which enable our clients to succeed in their businesses. The more success we bring to you, the more work you bring to us.

Our Motto

No lies, no surprises.

Plastics

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HDPE Use:
In HDPE Film form it is used for snack food packaging and cereal box liners. In blow molded HDPE form it is used for non carbonated drink bottles. In injection molded form, it is mostly used for margarine tubs, deli food and whipped toppings. High Density Polyethylene is also used as detergent bottles, milk jugs, garbage containers, water pipes (plumbing) as well as packaging for industrial chemicals such as detergents, bleach and acids.

General uses of HDPE include bread trays, films for grocery sacks, bottles for beverages and household chemicals and injection-molded beverage cases.

Scrap HDPE:
In essence Scrap HDPE is recyclable waste consisting of only High Density Polyethylene. It comes all sorts of shapes, forms and colors. The better it is sorted and cleaned, the more it is worth on the recycle market. Some popular forms of HDPE Scrap are:

• postconsumer HDPE Scrap (A finished HDPE material that would normally be discarded as a solid waste after having completed its life cycle as a consumer item)
• HDPE film trimmings (scrap from carrier)
• HDPE bags (carrier bags made of HDPE. They come in colors: natural, white, mixed, printed and unprinted)
• HDPE Regrind (HDPE carrying bags and similar, converted into hard solid structure then grinded and made ready for recycling)
• Scrap HDPE bottles
• HDPE barrels and drums (also named HDPE canes, HDPE tanks. Those are empty “barrels” made of HDPE. They can be squashed and mounted on palletes or in original form – which is unpractical.)
• HDPE mixed postconsumer scrap (includes everything and anything made of High Density Polyethylene. HDPE mixed post consumer scrap can be sorted by color)

HDPE Scrap forms:
High Density PolyEthylene Scrap comes in various forms. It can be baled, loose, compacted into secure bundles (cubicles), rolls, grinded into flakes, etc.

Scrap HDPE prices:
To get the current price list of Scrap HDPE and available options, please fill out the contact form on the bottom of this page.

HDPE Scrap Suppliers:
Please fill out the contact form below and we will send you a list of currently available suppliers.

Glossary, HDPE

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