As the world-leading polystyrene processor and French leader on the EPS moulded item market, we simultaneously factor in performance and growth to always offer more sales expertise. In 30 years, we have developed our know-how in the various technologies associated not solely with packaging but also with the manufacture of technical parts.On the back of our expertise in processing expanded plastic resins, such as expanded polystyrene, we now provide services for particularly demanding industrial sectors.

The diversity of our production processes enables us to choose the best for your products.

The raw material

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Expandable polystyrene, our raw material, is manufactured in part by Knauf in Belgium. It is obtained by polymerising styrene and an expansion agent: pentane. In our factories, it undergoes pre-expansion, a decisive phase in the moulding process. Under the effect of steam, the expanded beads then grow by 50 times their original volume and develop a closed-cell structure made up of 98% air.

Block moulding

Block moulding makes it possible to manufacture parallelepipedal items. These “blocks” are subsequently machined in our cutting workshops to manufacture protective stays, decorative products or prototypes.

  • Dimensions: 1m x 1m x 6m (WxLxH)
  • Minimum density: 10 g/L


Equipped with over 240 presses, distributed throughout 40 production facilities, we deploy our closed-cell moulding expertise for the manufacture of items made of EPS (max.: 2000 x 1400cm, densities 18g/l – 60g/l)

Besides being customisable, our tools are “mobile” within our facilities. Their adaptability to a large number of machines makes it possible to envisage rapid transfer of production.

The diversity of our equipment (vacuum equipment, transfer and film complexing) allows us to adapt our production according to the complexity of your products.

Complexing helps enhance the mechanical behaviour of the closed-cell foam object, by increasing its rigidity and making it more watertight.

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : چهارشنبه 28 آذر 1397

Major brands look for other packaging alternatives

Major brands such as Mcdonalds and Target are looking to other alternatives to EPS packaging not because it is not effective as a cost effective packaging material, but because of concerns related to the frustrations of customers in trying to recycle it, its implications for ocean plastic and the economics of recycling for businesses such as Target. As a company official explained to Packaging Digest:

It’s also a big issue in our distribution centers because a lot of product that gets sent to stores is taken out of the box and hung, like a mirror or a frame. But then the polystyrene has got to go back to the distribution centers and there’s a lot more than you would imagine. It’s just enough to be a problem but not enough to invest in densifiers.

The issue remains complicated. Considerations range from the sustainability impact of potentially more product damage and its related carbon footprint and economic cost on one side of the debate if EPS packaging is not used, to the sustainability dilemma of ocean plastic and solid waste generation resulting from using EPS, on the other.

:: برچسب ها : یونولیت ,
ن : علی پور
ت : چهارشنبه 28 آذر 1397

Choose Recyclable or Compostable Alternatives

As consumers, we can vote with our dollar and show businesses what we value. Choosing environmentally-friendly products is one way to show that we care about the health of our community and environment. Always choose recyclable or compostable alternatives instead of using polystyrene foam products when possible. While Newby Island does recycle polystyrene foam items, it’s one of the few places that does so. Keep in mind that recycled polystyrene has very little market value and can only be used to make a small range of products, most of which can’t be recycled themselves. Many jurisdictions have banned expanded polystyrene (EPS) foam food service ware (e.g., takeout clamshells and Styrofoam water cups). Many more jurisdictions are looking to adopt policies to ban it. Why?

  • styrofoam-litter-thumbnail-2There are no viable, cost-effective markets available for this material;
  • It is difficult and uneconomical to handle and recycle, especially if soiled by food;
  • It usually ends up in landfills, where it essentially does not biodegrade;
  • A substantial amount is found as harmful litter in storm drains and local waterways due to its lightweight, easily airborne characteristics;
  • Because it easily breaks down into smaller pieces, it’s not only difficult to clean up, but is also mistaken for food and ingested by birds and marine wildlife (which contaminates the food chain, including humans who consume contaminated marine wildlife);
  • Styrene, a synthetic chemical from which foam food and beverage containers are made, has long been a cancer-suspect agent. On April 22, 2016, the Office of Environmental Health Hazard Assessment (OEHHA) added styrene to the list of chemicals known to the State of California to cause cancer. This listing was based on formal identification by the National Toxicology Program (NTP) that styrene causes cancer.

Replacing polystyrene products with less-hazardous, compostable, or readily recyclable products will protect the public health and safety of Milpitas residents, as well as our environment, waterways and wildlife. Acceptable alternatives include compostable/recyclable paper, cardboard, molded or rigid pulp or plastic products and certified compostable “starch peanuts/loose fill/foam.” Shop wisely and show businesses what you value!

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : سه شنبه 27 آذر 1397

In 1987, a barge called Mobro 4000 departed Islip in New York’s Suffolk County loaded up with 3,100 tons of waste, a fair bit of which was Styrofoam containers. The barge was supposed to unload its undesirable cargo into a landfill in North Carolina, but that proved harder than expected. No one wanted the trash. Mobro barge ended up wandering the eastern seaboard for six months, dipped into the Caribbean, and even made it as far as Belize without finding a suitable dumpsite.

The fiasco drew media attention and ignited a national conversation about landfills, recycling, and the environment. Not surprisingly, Styrofoam emerged from this debate as the logical bad guy since it does not biodegrade and thus, it was argued, would crowd landfills and pollute our oceans. In 1988, New York’s Suffolk County enacted the first Styrofoam ban in the United States, but a plastics lobby quickly formed in response and succeeded in overturning the ban. Since then, similar bans have been put in place around the country—on Styrofoam, plastic bags and, most recently, plastic straws—resulting in years of litigations and millions of dollars worth of legal fees.

یونولیت بسته بندی

We’ve been stuck in the same debate for the past 30 years. Styrofoam is still here—but is that good or bad? Turns out, there’s no simple answer. And Styrofoam’s story is certainly complicated.

A Wonder Product or a Waste Nightmare?

First discovered in 1839 in Berlin, Styrofoam’s precursor—expanded polystyrene (EPS) foam—became immensely popular during World War II as an inexpensive building material for military aircrafts. Between 1939 and 1945, the rate of polystyrene production increased expotentially. In 1946 the Dow Chemical Company trademarked Styrofoam. In the process of trying to make polystyrene more flexible, Dow scientist Ray McIntire mixed together styrene and isobutene in a reactor and heated them. The result was extruded polystyrene foam, a strong material that is moisture resistant and composed of 98 percent air—so incredibly lightweight and buoyant that it was considered a wonder product. Its low cost and ease of production catapulted Styrofoam into our lives. From energy efficient building insulation to surfboards, and from soilless hydroponic gardening to airplane construction, Styrofoam was heralded as the wave of the future—until the environmental issues came up.

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : سه شنبه 27 آذر 1397

EPS or as many know by The Dow Chemical Company's trademarked name, STYROFOAM, is an extremely lightweight product that is made of expanded polystyrene beads. Originally discovered by Eduard Simon in 1839 in Germany by accident, EPS foam is more than 95% air and only about 5% plastic.

Small solid plastic particles of polystyrene are made from the monomer styrene. Polystyrene is normally a solid at room temperature that can be melted at a higher temperature and re-solidified for desired applications. The expanded version of polystyrene is about forty times the volume of the original polystyrene granule.

Uses of Polystyrene

Polystyrene foams are used for a variety of applications because of its excellent set of properties including good thermal insulation, good damping properties and being extremely light weight. From being used as building materials to white foam packaging, expanded polystyrene has a wide range of end-use applications. In fact, many surfboards now use EPS as the foam core.

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Building and Construction

EPS is inert in nature and therefore does not result in any . Since it will not appeal to any pests, it can be used easily in the construction industry. It is also closed cell, so when used as a core material it will absorb little water and in return, not promote mold or rotting.

EPS is durable, strong as well as lightweight and can be used as insulated panel systems for facades, walls, roofs and floors in buildings, as flotation material in the construction of marinas and pontoons and as a lightweight fill in road and railway construction.


EPS has shock absorbing properties making it ideal for storing and transporting fragile items such as wines, chemicals, electronic equipment, and pharmaceutical products. Its thermal insulation and moisture resistant properties are perfect for packaging cooked food as well as perishable items such as seafood, fruit, and vegetables.

Other Uses

EPS can be used in the manufacture of sliders, model planes, and even surfboards because of its positive strength to weight ratio. The strength of EPS along with its shock absorbing properties makes it effective for use in children’s seats and cycling helmets. It is also compression resistant, meaning that EPS is ideal for stacking packaging goods. EPS also has applications in horticulture in seedling trays to promote aeration of the soil.

Why Is EPS Advantageous?

  • High thermal insulation
  • Resistant to Moisture
  • Extremely durable
  • Easily recyclable
  • Versatile in strength
  • Easily laminated with
  • Manufactured into different shapes, sizes, and compression materials
  • Lightweight and portable
  • High shock absorbency characteristics
  • Compression resistant
  • Branded by printing or adhesive labeling.

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : دوشنبه 26 آذر 1397
پلی استایرن
پلی استایرن یک پلاستر همه کاره است که برای تولید انواع مختلفی از محصولات مصرفی استفاده می شود. به عنوان یک پلاستیک سخت و جامد، اغلب در محصولاتی که نیاز به وضوح دارند، مانند بسته بندی مواد غذایی و ظروف آزمایشگاهی استفاده می شود. هنگامی که با رنگهای مختلف، مواد افزودنی یا سایر پلاستیک ها ترکیب می شود، پلی استایرن برای ساخت لوازم، الکترونیک، قطعات خودرو، اسباب بازی ها، گلدان های باغبانی و تجهیزات و موارد دیگر استفاده می شود.

پلی استایرن نیز به یک ماده فوم ساخته می شود که پلی استایرن (EPS) یا پلی استایرن اکسترود شده (XPS) نامیده می شود، که برای خواص عایق بندی و انعطاف پذیری آن ارزشمند است. پلی استایرن فوم می تواند بیش از 95 درصد هوا باشد و به طور گسترده ای برای ساخت عایق های خانگی و لوازم خانگی، بسته بندی محافظ سبک وزن، گشت و گذار، خدمات غذا و بسته بندی مواد غذایی، قطعات خودرو، سیستم های تثبیت کننده جاده ای و راه راه و غیره استفاده می شود.

پلی استایرن با استفاده از سیم کشی یا پلیمریزاسیون استایرن ساخته شده است که یک ماده شیمیایی ساختمانی است که در ساخت بسیاری از محصولات استفاده می شود. استایرن نیز به طور طبیعی در غذاها مانند توت فرنگی، دارچین، قهوه و گوشت گاو اتفاق می افتد.
پلی استایرن در لوازم خانگی
یخچال، تهویه مطبوع، اجاق گاز، مایکروویو، جاروبرقی، مخلوط کن - این و دیگر لوازم اغلب با پلی استایرن (جامد و فوم) به دلیل آن بی اثر است (با مواد دیگر واکنش نشان نمی)، مقرون به صرفه و طولانی مدت ساخته شده است.

پلی استایرن در خودرو
پلی استایرن (جامد و فوم) برای ساخت بسیاری از قطعات خودرو، از جمله دستگیره، پانل ابزار، تر و تمیز، پانل درب جذب انرژی و فوم ضعیف صدا استفاده می شود. فوم پلی استایرن همچنین به طور گسترده ای در صندلی های محافظ کودک استفاده می شود.

پلی استایرن در الکترونیک
پلی استایرن برای مسکن و سایر قطعات برای تلویزیون، رایانه و انواع تجهیزات IT استفاده می شود، جایی که ترکیب فرم، عملکرد و زیبایی شناسی ضروری است.

پلی استایرن در Foodservice
بسته بندی مواد غذایی پلی استایرن به طور منظم بهتر است، مواد غذایی را تازه تر نگه می دارد و کمتر هزینه می کند.

پلی استایرن در عایق
فوم سبک پلی استایرن عایق حرارتی عالی در کاربردهای متعددی نظیر دیوارهای ساختمانی و سقف، یخچال و فریزر، و امکانات ذخیره سازی صنعتی سرد فراهم می کند. عایق پلی استایرن بی اثر، مقاوم و مقاوم در برابر خسارت آب است.

پلی استایرن در پزشکی
با توجه به وضوح و سهولت از عقیم سازی آن و پلی استایرن است که برای طیف گسترده ای از برنامه های کاربردی پزشکی، از جمله بافت سینی فرهنگ و لوله های آزمایش، پتری دیش، قطعات تشخیصی، محوطه برای کیت تست و دستگاه های پزشکی استفاده می شود.

پلی استایرن در بسته بندی
پلی استایرن (جامد و فوم) به طور گسترده ای برای محافظت از محصولات مصرفی مورد استفاده قرار می گیرد. جعبه های CD و DVD، بادام زمینی بسته بندی فوم برای حمل و نقل، بسته بندی مواد غذایی، سینی های گوشت / مرغ و کارتن های تخم مرغ به طور معمول با پلی استایرن ساخته می شود تا از آسیب یا خراب شدن محافظت شود.

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : يکشنبه 25 آذر 1397

In the United States, the U.S. Food and Drug Administration (FDA) strictly regulates all food packaging materials, including polystyrene. All food packaging – glass, aluminum, paper and plastics (such as polystyrene) – contains substances that can “migrate” in very tiny amounts to foods or beverages. That’s one of the reasons why FDA regulates food packaging in the first place – to be confident that the amount of substances that might actually migrate is safe.


For every material used in food contact, there must be sufficient scientific information to demonstrate that its use is safe. FDA’s safety evaluations focus on three factors:

  • Material(s) used in the packaging,
  • Cumulative exposure to substances that may migrate into foods and beverages, and
  • Safe levels of that exposure.

Tiny amounts of styrene may remain in polystyrene following manufacture, so FDA has evaluated both the safety of the food contact material itself (polystyrene) and the safety of the substance that may migrate (styrene). The result of these evaluations: FDA for decades has determined that polystyrene is safe for use in contact with food.

The U.S. National Toxicology Program Director Dr. Linda Birnbaum, Ph.D., was quoted widely in Associated Press reports in June 2011: “Let me put your mind at ease right away about Styrofoam … [the levels of styrene from polystyrene containers] are hundreds if not thousands of times lower than have occurred in the occupational setting…In finished products, certainly styrene is not an issue.”

In 2013, the provided updated styrene migration data to FDA. The data show that current exposures to styrene from the use of polystyrene food contact products remain extremely low, with the estimated daily intake calculated at 6.6 micrograms per person per day. This is more than 10,000 times below the safety limit set by FDA (FDA’s acceptable daily intake value of styrene is calculated to be 90,000 micrograms per person per day).

:: برچسب ها : یونولیت ,
ن : علی پور
ت : يکشنبه 25 آذر 1397

Most foam #6 products can be identified by the resin identification code stamped on the material. Types of foam #6 are often mistakenly referred to as Styrofoam®, which is a registered trademark of the Dow Chemical Company for extruded polystyrene foam made for thermal insulation and craft applications. The types of foam products that are accepted can vary between processing facilities. For example, many processors do not accept colored foam or foam that has been treated with flame retardants. Check with your recycling facility to confirm the types of foam that are accepted.

Foam cups and food service products

FPO - Foam CupsFoam #6 food service containers include drink cups, food trays and clamshell containers. Food service foam containers must be in recyclable condition. Coffee and soda cups do not need to be rinsed; however, containers used for food need to be wiped or rinsed.

Recycling is offered curbside in some communities. Some restaurants and other businesses collect foam cups for recycling by mail. In addition, some school districts have started recycling programs for foam #6 lunch trays and containers.

Foam packing peanuts

FPO - Foam PeanutsPackaging peanuts are made with a variety of materials. Some, but not all, packing peanuts carry the #6 recycling symbol. When combined with foam #6 products, non-EPS packing peanuts are a contaminant. For that reason, packing peanuts should not be commingled with other foam recycling.

یونولیت بسته بندی

The best way to recycle foam packing peanuts is to reuse them or donate them for reuse. Many local pack and ship stores gladly accept foam packing peanuts free of charge. Some cities also collect them to reuse or resell. Please contact your local post office or parcel service to verify if they accept packaging peanuts for reuse.

:: برچسب ها : یونولیت بسته بندی ,
ن : علی پور
ت : شنبه 24 آذر 1397

Geofoam and geosynthetic drainage systems are recommended for use in below-grade waterproofing or on rooftop garden systems. Wherever groundwater may be present at any given time throughout the year, a geo-composite system such as described is recommended. These sites may include, but are not limited to, retaining walls, highway construction, walkway planters and large landscaping applications, for energy and water conservation purposes, and more.
Image Credit: Geo Tech Corporation

Cautions in Use
In the use of deep drainage prevention, it is recommended that a perimeter hydrostatic pressure relief system is included in the construction specifications. Point loading or high levels of petroleum solvents or fuels must not be within the area of installation, as waterproofing and damp proofing will be subject to failure.

Have more questions? Feel free to contact us at Poly Molding LLC to identify what thickness or size of blocks are required and geosynthetics may best suit your design and construction needs.

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:: برچسب ها : یونولیت ,
ن : علی پور
ت : شنبه 24 آذر 1397

There is a significant difference between the two, however. First off, a Styrofoam coffee cup can be crushed in your hand; please don’t attempt this with an Expanded Polystyrene block, the type we manufacture. Our EPS (aka Geofoam) is so dense that it’s commonly used as foundation materials in the building of airport runways and embankments at shipping yards. The largest Geofoam project1 to date? The preparation of new Salt Lake City roadways to handle the massive traffic for the 2002 Olympics. In no way should EPS Geofoam be confused with fast food sandwich clamshell containers and other lightweight uses for Styrofoam.


Given that most lay people mistakenly refer to lightweight disposable cups, packing materials and food service containers as Styrofoam, they are of the belief that all polystyrene products fall under the same moniker. Not so, as evidenced by the following quotation from Wikipedia:

“Styrofoam is a trademarked brand of closed-cell extruded polystyrene foam currently made for thermal insulation and craft applications. It is owned and manufactured by The Dow Chemical Company.1 In the United States and Canada, the word styrofoam incorrectly refers to expanded (not extruded) polystyrene foam, such as disposable coffee cups, coolers, or cushioning material in packaging, which is typically white and is made of expanded polystyrene beads. The term is used generically although it is a different material from the extruded polystyrene used for Styrofoam insulation.

The Styrofoam brand of polystyrene foam, which is used for craft applications, can be identified by its roughness and the fact that it “crunches” when cut. Additionally, it is moderately soluble in many organic solvents, cyanoacrylate, and the propellants and solvents of spray paint. Another tradename for polystyrene foam is Thermacol, originated by BASF for expanded polystyrene.”

When performing an Internet search for EPS foam blocks, folks search under the term “styrofoam,” where they typically don’t find much about it. We recommend searching under the following terms to avoid disappointment and loss of time: Expanded Polystyrene (EPS) Form Block, Styrofoam Block, EPS Form Manufacturers, or EPS Foam Block Machinery.

:: برچسب ها : یونولیت ,
ن : علی پور
ت : شنبه 24 آذر 1397
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