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Aquaponics is Thriving

Posted by Team SolaWrap and the Green Thumbs. on Tue, Jul 05, 2016 @ 05:02

Aquaponics is all the rage and its thriving! It is booming all over the world! People are creating aquaponics systems out of aquariums and making grow beds lined with fish-safe plastic sheeting. Some state of the art facilities are taking SolaWrap- the bubble film that allows plants to grow like no other and creating a green house for aquaponics. 

Aquaponics enthusiasts have also discovered a food grade, FDA compliant liner that is strong, 100% recyclable and much better for the environment.  It is called, Ultra FGC.  Growers that are looking for  organic certifications are drawn to this film.  It is used for not only aquaponics, but hydroponics and food facilities. 

SolaWrap with Aquaponics

Below is a picture of a grow beds.

Aquaponics trough ! resized 600

Where are some of the largest aquaponics farms you ask? One of the world's largest (reportedly) commercial aquaponics project is said to be in Abu Dhabi. The center produces 60,000 heads of lettuce in 21 days!  The image below is not from that farm, but from a farm in the United States. Check out that gorgeous lettuce!

aquaponics lettuce!

Aquaponics farms are cropping up in the most unusual places! Did you know the Hamm's Brewery building in St Paul MN utilized 6 floors to create a giant aquaponics facility?

According to Wikipedia, aquaponics has "ancient roots"...I don't think a pun was intended there...The Aztecs created and cultivated islands known as chinampas which some say was the first form of aquaponics for agricultural use. Plants were raised on islands in lade shallows and the waste material dredged from the Chinampa canals were used to manually irrigate the plants.

Thailand, South China and Indonesia cultivated and farmed rice in paddy fields along with fish to create early examples of aquaponics systems.

Schools are setting up systems to teach children about farming both fish and vegetables. It's a project that brings great pride and joy to school children. They can witness first hand what it takes to grow their own head of lettuce in water.

If you would like to know more about creating your own aquaponics system small or large, please call Ken Aguilar at Global Plastic Sheeting- 866 597 9298. He knows all about it, and he will be happy to help you.

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Tags: aquaponics

12 Uses For Plastic Sheeting/ Visqueen

Posted by The Plastic Sheeting Gurus! on Fri, Jun 24, 2016 @ 03:37

What is Plastic Sheeting/ visqueen? Can it be recycled? What are some of the more common uses?

Click here for a quick video!

Plastic sheeting is also referred to as "plastic film, visqueen, poly". An analogy would to plastic wrap one uses to cover food, only much thicker and it much bigger rolls. Visqueen is a brand of polyethylene plastic sheeting that is usually LDPE. Polyethylene can be recycles and breaks down in the sun if it doesn't have a UV additive to protect it.

There are so many varied uses for plastic sheeting which is often referred to interchangeably as "Visqueen." It's important to note that most of the plastic sheeting on this site is engineered plastic not "visqueen".  Engineered plastic is made from virgin resins, not reground plastic. Let's explore twelve of the common uses.                                                                                                                        

Canal_liner.png       Carpet_Plastic.jpg    Glass_Plastic_Removal-resized-600.jpg
  • Shelters or Temporary Protection

When hurricanes strike or disasters ensue, its plastic sheeting that is often used to create temporary shelters.  Often string reinforced plastic is used because it is stronger and will hold up to wind. 

  • Coverings for Outdoor Equipment, Wood Piles, Furniture

String Reinforced plastic sheeting is commonly used as well as non-reinforced plastic to make covers for a variety of items.  Grommets and hems can be added to the plastic so it can be held down in place.

  • Waterproofing Ponds, Lakes, Canals

Liners for ponds, lakes and canals use a variety of plastic sheeting called, High Density Polyethylene or HDPE to line their basins.  This virgin poly will hold up to the sun and elements. 

  • Recreational Uses such as Ice Skating Rinks, Slip and Slides

The beauty of plastic sheeting is it can be engineered for specific uses.  With the addition of special additives, plastic sheeting can work long and hard for the application it was designed for.  Ice skating rinks and slip and slides are an example of this.  Very large or long rolls of plastic can be ordered from a manufacturer to serve these purposes.

There is special plastic sheeting that does not harm fish or humans and can thus be used for rain collection or aquaponics.  Plastic can leach out chemical especially if it is construction and agricultural grade- as that plastic is mixed with regrind that is not pure virgin polyethylene.

  • Closing Off Rooms for Remodeling

With the help of an amazing product called ZipWall which will hold plastic sheeting up to the ceiling- you can close off a room where work is being done.  This is especially great if dust is flying around from workman activities.

  • Abatement work for Lead Paint

Lead paint abatement is a big deal.  It is very important that lead paint that is being scrapped off a surface does not contaminate other rooms in the house.  This is a great place to use plastic sheeting. Anti-static fire retardant plastic is a great choice for this application because the lead dust won't stick to the plastic sheeting. It can be swept up and removed.

There are full lines of plastic that have adhesive on one side so they can stick to the surface they are protecting!  Each type (Carpet Plastic, Tile Plastic, Countertop Plastic, etc) have specially formulated adhesive so it sticks just right to that surface.  For example, you need a stronger adhesive to stick the plastic to carpeting than you do for plastic being applied to counter.  Self-adhesive plastics are great for protecting surfaces from dogs, children's activities, adult parties and more!

  • Black Out Curtain for Halloween, Movie Sets, Museum Work

Black fire retardant plastic sheeting is used all the time by commercial haunted houses, movie sets, aerospace companies and museums to list a few.  This plastic is certified to be fire retardant- thus not contributing to a fire should one ensue.

Plastic polyethylene sheeting has been used for years and years to create greenhouses.  Today there are state of the art coverings for greenhouses that last a lot longer than the old school 6 mil plastics of yester-year.  This remarkable product is called, SolaWrap! It is plastic sheeting with bubbles in the layers.  The bubbles act to insulate the house from heat and cold, while adding strength. There are a lot more attributes that you can learn about by clicking on the link.

  • Aquaponic

Today there is a specialized type of plastic sheeting that has been created especially for aquaponics. It is called Ultra FGC. Ultra FGC is a food grade compliant liner that was engineered to be not only better for the environment, but better for your business.  When we speak of the environment we mean minimizing the raw material usage- thus leaving a smaller environmental footprint. It's better for your business because we reduced the weight of the liner while increasing the capabilities and strength of the plastic.

  • Under slab vapor barrier

Moisture resides in the earth and has a way of finding its way to the surface. This moisture is a problem for concrete slabs and the flooring that will be placed on the concrete. Under Slab vapor barriers are plastic sheeting barriers that are placed below the concrete to block the water from reaching the concrete.  Vapor barriers do have low levels of moisture permeance. Get a copy of the spec sheet for the vapor barrier to understand what grade of vapor barrier is being placed under the slab.

Back in the 1950's a 6 m

il layer of plastic sheeting was used as a "vapor barrier". Unfortunately, 6 mil plastic still lets water pass through its cell allowing water to come through. 6 mil is so thin, that often it tears when it is put in place. A stronger less permeable is a much safer solution.

Plastic sheeting is a polyethylene film that comes in many different colors and thicknesses. It also comes in a variety of grades or qualities.

Grades of Plastic Sheeting

 "Virgin Polyethylene" is the highest form of plastic sheeting today.  This varies wildly from Visqueen. Visqueen has become one of the generic names for plastic sheeting, just as Kleenex has become the generic name for tissue. When someone asks for Visqueen, they are referring to a lesser grade of plastic sheeting. The plastic sheeting known as Visqueen has become a generic name for Construction and Agricultural Grade Polyethylene sheeting (C&A film). C&A film contains up to 25% post consumer recycled content, and is made from the least expensive resins available at any given time. While it is excellent for use in many projects, it is not ideal for any use that requires sustained strength such as a tarp or for use as a vapor/moisture barrier or retarder. People will often do a search for "visqueen vapor retarder", or fire retardant visqueen" when they may be looking for an engineered plastic. An engineered plastic is one that is intentionally designed to meet certain measurable criteria to insure its suitability for the job it is intended for.

Thickness/ Gauge

The thickness of polyethylene is measured in mils, which equals one-thousandth of an inch, or 0.001 inch. Many of the local hardware or box stores will carry very light duty plastic sheeting that could be 1 to 2 mils thick.  Depending on the application will dictate how thick the plastic needs to be.  6 mil is a very common thickness for plastic sheeting- but it can go all the way up to 100 mil! Some refer to the thickness of plastic as "gauge"- but a more precise term is "mil".  Plastic wrap, typically sold on rolls in boxes with a cutting edge, clings to many smooth surfaces and can thus remain tight over the opening of a container without adhesive or other devices. Common plastic wrap is roughly 0.5 mils, or 12.5 µm, thick. Please note that the term "gauge" generally refers to the thickenss of metal.

Roll Sizes

There are so many different roll sizes, thicknesses, and colors on the market.  Here are a few examples:

Notice in the above examples that the last two examples have additives added to them.  An anti-static additive as well as a fire retardant additive can be added to make the plastic both anti-static and fire retardant. 

Plastic sheeting has come a long way with the applications and jobs it is able to assist. Bottom line is, plastic sheeting is a work horse for a variety of projects.

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Tags: liners

Crawl Space Encapsulation Products- How to choose the right one!

Posted by Nana Hinsley on Wed, May 25, 2016 @ 01:55

Do it Right the First Time- Have you ever heard this used in terms of  crawl space encapsulation?

What about,  “You get what you pay for” or “if you’re going to do right do it right the first time.”  When it comes to encapsulating the crawlspace to keep moisture out of the home nothing rings more true than these expressions.

Crawlspace Encapsulation Misconceptions:

The most common mistake that is made in crawlspace encapsulation projects is in selecting a vapor barrier.  Most homeowners just know they need to get the humidity level down in their homes so they will not have mold problems in the future. They have heard that laying plastic down in crawlspace will help with this problem.  People head out to the local hardware store or calling an in-expensive handyman who knows how to install plastic in a crawlspace to quickly solve the problem.  However what most homeowners don’t know is that has not fixed the problem but instead have just set themselves up for greater expenses down the line.

What??? My Newly Encapulated Crawlspace isn't Fixed?

What you may not know is that plastic is not just plastic.  The 4 & 6 mil visqueen we have all come to know well does have a place in the home improvement world when it comes to temporarily blocking off rooms you don’t want dust to fly into or covering up your furniture from getting messed up, but it does not have a place in crawlspace to protect you from moisture coming up from the ground.   The problem with 4 & 6 mil visqueen you can buy at any local hardware store is that it is made from recycled plastic products thus making it inexpensive.  The problem with this inexpensive visqueen product is that because it is made from recycled resin it degrades fast.  In fact visqueen starts to degrade 6 weeks after being exposed to the elements in your crawlspace.  Also because visqueen is made for recycled resin it does off-gas those giving mold spores food to grow on.  Thus in 3 to 5 years homeowners will have to replace this liner in their crawlspace and once again shell out more money to fix a problem such as moisture in their home.

What Plastic Sheeting Vapor Barriers Should I Use?

Well like they say “if you going to do it right do it right the first time.”  This means do a little homework and not rush to fix a problem with a quick fix.  First select a good Vapor Barrier for your Crawlspace.  When looking for a good Vapor Barrier for your Crawlspace you should look for a liner that is made from Virgin Resin.  This is the most important thing because Virgin Resin Vapor Barriers will not break down over time and also don’t off gas making it so mold can’t grow on the barrier itself.  There are many different types ranging in thickness from 8 – 20 mils in thickness depending on your crawlspace needs.  Using a Virgin Resin Vapor Barrier in your crawlspace will ensure that you only have to encapsulate your crawlspace once and that your home will be safe from further moisture problems.

What are some good brand names to look for?

Use what the professionals use: Poly-Scrim  How do you know these products will do the job? Ask for data sheets that will show you whether the vapor barrier passed the tests (ASTME) for doing the job properly. If you live in an area with radon, now your life depends upon getting the correct vapor barrier that has a tight knit cell structure to keep the radon at bay.

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Tags: Crawlspace encapsulation

Does Fire Retardant Clear Material Exist?

Posted by Nana Hinsley on Wed, May 25, 2016 @ 01:38

Question:  I am looking for a fire retardant clear material, with no print or design, to be used in a stage set scenery.  Do you have any product that might fit the bill?

Answer:  What ?? Flame resistant plastic sheeting, really? Does it come in Clear, white, black?  Flame resistant flexible plastic comes in white and black, but it does not come in clear when it is made from polyethylene.  The reason being that the fire retardant/ flame resistant additive is white! It is common to find this plastic in a  Black plastic sheeting that is fire retardant?  Why would anyone want it, and what advantages does it offer me? What makes the GPS Black Plastic Sheeting any different than what I can get at the home improvement stores? Why is it important to use during Halloween for example?

FR Global Plastic Sheeting

First, polyethylene is highly combustible in its natural form, and makes what Fire Marshal's deem a "VERY EXCITING FIRE"once it is on fire.  Because polyethylene is made from oil and natural gas based compounds, it is highly flammable, and burns at very hot temperatures. 

Polyethylene is used everywhere.  If you keep your eyes open, you will see it every day- on construction sites, in homes and offices, black plastic at haunted houses, flea markets, warehouses are full of it, packing supplies are made from it, toys, auto parts, most foreign cars (just threw that in for giggles!), anyway you get the picture.  Poly makes a fire burn much hotter and faster, and is an accelerant.  This causes people to get hurt, and unfortunately, in numerous cases every year, people lose their lives because of plastic sheeting or other types of plastics. This is why FR plastic is important for Halloween. If people have a candle or a lighter, you don't want the plastic catching fire. It's important to buy an FR plastic that is certified as Fire Retardant. There are I am sure you can all remember hearing of fires in night clubs, where  plastic caught fire, and many people were trapped.  This is avoidable, and with some education, people can make choices that keep these tragedies from happening.

Through chemistry, the plastic industry has been able to make most polyethylene, regardless of form (even most foreign cars) using plastic that is deemed "Flame Resistant".  First, let's get an idea what this term means.  Making a highly combustible material, like polyethylene, Fire Retardant (FR)  or Flame Resistant means that we take away its ability to contribute significantly as a fuel source in a fire.  This can be done at various levels and there are countless tests available today to help certify the levels of just how FR these products have become.  Some of the most popular are the NFPA 701, ASTM E-84, UL-94, California Fire Marshal Title 19, just to name a few.

To simplify this, additive packages are added to the resins used to make polyethylene products causing the finished product to be fire retardant. 

Today, we are able to engineer the additive levels so that the products can pass the FR tests needed for most applications and industries.  A  few applications for FR polyethylene that did not even exist as little as a decade ago are such things as: Black Polyethylene Sheeting (Black Plastic Sheeting) for haunted houses, House wraps, Vapor Retarders, Construction Tarps, Enclosure Films, Abatement Plastics, Automotive interior parts, FR tapes, Airplane Covers, Military Applications Galore, Temporary Shelters, Humanitarian Aid,  Cargo Covers, Surface Protection Films, Pallet Covers, Heat Shrink Wrap, Theatrical Plastics used on stages, Dog show plastics, Industrial Plastic Sheeting, Spray booths, and the list goes on and on.

The reason for the increased popularity in FR polyethylene over such a short period of time is that the increase in fire safety is so substantial, and the cost difference is so small that it just makes sense.  When fires strike, and they strike often, using FR products of any type keep the loss of property to a minimum, and more importantly the loss of life and injury as small as possible.  More and more specifications are calling for FR products, and this is a great thing for all of us.  After all, when was the last time you checked to find out if that house wrap they used to build the walls of your house was Fire Retardant?  Please watch for future posts on this subject, because this hot topic is just heating up.

 

If you have unique questions, call 866 597 9298 and ask for Lee.  You may contact him by email- just click here.

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Tags: Clear Fr material, FR vinyl

NFPA 701-15 or ASTM E-84 What's the Difference?

Posted by The Plastic Sheeting Gurus! on Tue, May 24, 2016 @ 04:09

ASTM E-84 

ASTM E-84 is intended to provide only comparative measurements of surface flame spread and smoke density with that of select grade red oak an fiber-cement board survaces under the specific fire exposture conditions. Simply put, ASTM E-84 measures the flame spread and smoke index, which are considered the surface burning characteristics of a material. 

Depending on the numbers, materials can have classifications of Class A, B, or C according to NFPA , ANSI/NFPA No. 101, "life Safety Code" , 2006 Edition, or IBC (International Building Code), 2006 Edition, Chapter 8, Interior Finishes, Section 803,  if they pass any level of this standard.  The test is conducted in a fire tunnel using a 22" x 24' sample of the material.  The ignition source is 7 seconds in duration, total test is 10 minutes.  The flame front cannot exceed 24" during the test.  Results are expressed as Flame Spread Index, and Smoke Developed Value.  Following are the criteria for each level of this test, regardless of whether NFPA or IBC.

For products that pass these criteria

Class A, Flame Spread 1-25, Smoke Developed Less than or equal to 450

Class B, Flame Spread 26-75, Smoke Developed Less than or equal to 450

Class C, Flame Spread 76-200, Smoke Developed Less than or equal to 450.

Please note, this test is comparable to UL 723, ANSI/NFPA No 255, and UBC No. 8-1

NFPA 701-015 Test 1 or 2

NFPA 701-15 (the most recent revision of the NFPA 701) measures the mass before test, mass after test, mass loss percentage, the number of seconds of any burning drips, and the after flame of the material in seconds during and after a specified burn period at a specified flame temperature.  Once the flame is extinguished the after flame in seconds is measured.  10 samples are tested, 5 in the machine direction, 5 in the cross direction (also known as warp/weft respectively).  This test is a Pass/Fail test based on the following criteria.  If the material fails any of the following criteria, it fails the test

Mass Loss: 40% Max Average or Average + 3 standard Deviations Max Individual

Drip Burn/Afterflame: 2 seconds Max. Avg. 

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Thickness of Plastic Sheeting- How is it measured?

Posted by The Plastic Sheeting Gurus! on Mon, May 23, 2016 @ 03:54

 We are often asked what the "True" thickness of polyethylene (plastic sheeting) means. The plastic sheeting (engineered films) industry is somewhat unique in that lots of terms get used. "True" means that a film that says it is  6 mils in thickness will measure at that thickness of 6 mils by a micrometer. People in this industry understand that most films are +/-10%, so in the case of 6 mil, a 5.4 mil is commonly accepted as 6 mils.  When films are reinforced, meaning they have strings running through the film, then the film is often measured at the thickest point, where the reinforcement crosses.  Some of these films are as low as 3 mil between the reinforcement grid, yet are sold all day long as a 6 mil film.

There are films that are "true" 6 mil films. One of our films is called, PolyScrim 6.  This reinforced film measures at 6 mils.  Another example of a "true" 6 mil film is, Anti-Static Fire Retardant 6 mil.  It's important to note that plastic sheeting can be made to a multitude of thicknesses to suit the application's needs.  For example, plastic sheeting liners (geomembranes) that are used in landfills need to be really strong- and thus call for a thicker plastic than a job that isn't is rugged. 

If we look at the terminology behind the thickness of plastic sheeting, it starts with the Greek alphabet.  The Greek letter µ when by itself stands for micron. This term has recently been superseded by micrometer or µm. The thickness of plastic (plastic gauge) is expressed in microns. [1 micron (1μ) = 1/1000 mm] 

If you consider the application for the plastic film, now not only does the thickness comes into play but the additives that are added to make the film perform for its intended use. For example, often people need plastic that is fire retardant- so a 6 mil film won't do the job, unless it is certified as fire retardant. The same goes with whether a film will be in the sun.  Without UV inhibitors, a regular piece of plastic won't hold up over time to the sun regardless of the thickness.

There are so many things that go into making an engineered plastic film. Feel free to call us anytime to learn more. Thank you- 866.597.9298

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Plastic is Plastic Right? Are there any differences?

Posted by The Plastic Sheeting Gurus! on Mon, May 23, 2016 @ 03:44

In the world of engineered plastic sheeting there are a variety of terms that are used freely in conversation and in the written word. Terms such as "low density polyethylene" or "Polyolefin vs Polyethylene". Below is a brief explanation of commonly used terms.

Low Density versus High Density- what's the difference?

HDPE.png  ldpe.jpg

 Question:  What is the difference between low density and high density polyethylene?

Answer: The biggest difference is how closely the molecules bond to each other in the structure of the product.  High density has a lot more molecules in the same amount of space.  This causes high density to have different qualities when compared to low density.  For instance, High density of the same thickness will be stronger, more puncture resistant, more tear resistant, tougher, stiffer, more chemical resistant, than a low density polyethylene made from the same grade of polyethylene. Low density polyethylene is a softer material, more pliable, more conforming.  These are general types of polyethylene.  Within each type there are varying quality levels, additives, and much more science to vary the products from their natural states to give them the qualities needed for the applications.

 There are many reasons why one might be used in a given application, compared to using the other.  Call866.597.9298 if you would like a further explanation. 

Plastic Classifications

Question:  What are all the classifications of plastic?

Answer:  Polyethylene is classified into several different categories based mostly on its density and branching.

  • Ultra high molecular weight polyethylene(UHMWPE)
  • Ultra low molecular weight polyethylene(ULMWPE or PE-WAX)
  • High molecular weight polyethylene(HMWPE)
  • High density polyethylene(HDPE)
  • High density cross-linked polyethylene(HDXLPE)
  • Cross-linked polyethylene(PEX or XLPE)
  • Medium density polyethylene(MDPE)
  • Linear low density polyethylene(LLDPE)
  • Low density polyethylene(LDPE)
  • Very low density polyethylene(VLDPE)

Polyolefin and Polyethylene- What's the difference

  1. What is the difference between Polyolefin and Polyethylene?
  2. Polyolefin is a material that is made of only carbon and hydrogen atoms. When the Polyolefin molecule is bonded in a more complex manner, then you have a variety of materials made from the polyolefin material.Polyolefin materials such as polyethylene, polypropylene and polybutene have more complex olefin branches than simple polyolefin. 

For example, Polybutene is a liquid polymer used in sealants, synthetic rubber and lubricants.  Polyethylene is used to make products like shrink wrap, and a variety of plastic sheeting products.  Polypropylene is a hard resin used in carpeting, food packaging and electronics. Don't be confused if a plastic sheeting product is referred to as a "polyolefin". Saying it is a polyolefin does not imply it is a superior plastic. After all, now you know that plastic sheeting is made up of Polyolefin.

How do you measure a mil?

Question:  How do you measure a mil?

Answer:  For plastic sheeting, the industry uses an instrument called a micrometer.

How thick is a mil and what is it?

Question:  How thick is a mil and what is it?

Answer:  A mil is a unit of length equal to one thousandth (10-3) of an inch (0.0254 millimeter). It is used in the plastic sheeting world to define the thickness of the film.    

1 mil    = 0.001 in

1 mil    = 0.0254 mm

1 mil    = 25.40μ (microns)

Another way to look at it is, 20 mils = .508 mm which is thinner than the thickness of a dime (10 cents) which is rougly 1.24461mm.

GRI- what does it stand for?

Question:  What does GRI stand for regarding 12 mil polyethylene sheeting or various vapor barriers/retarders?  The Geosynthetic Research Institute.

For example you might see, GRI=GM22 standard specification which is a test method that specifies the required properties and testing frequencies for scrim reinforced polyethylene geomembranes that are used in an exposed (out doors) application. It establishes minimum physical, mechanical and durability properties that must be met.  The GRI GM22 cover scrim reinforced poly geomembranes in thicknesses of 0.50 mm (20 mil), and 0.20mm (8 mil). This spec represents manufacturing quality control (MCQ).

For more information please visit the GRI's website.

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Polypropylene- Is it different from HDPE?

Posted by The Plastic Sheeting Gurus! on Tue, May 17, 2016 @ 02:45

polypropylene- Is it different from HDPE? Yes it is.  To begin with, polypropylene is also called, "polypropene".  it is a thermoplast polymer which is made from a monomer called propylene.  Like HDPE it has a wide variety of applications such as packaging, labeling, textiles, ropes, stationery, automotive components and more.  Like HDPE it is rugged and usually resists man chemical solvents and acids.  

Density Differences:

Several things differentiate polypropylene from HDPE.  Density is the first factor.  The density of polypropylene is between 0.895 and 0.92 g/cm².  High Density Polyethylene  is known for it's big strength-to-density ratio.  The density of HDPE can range from 0.93 to 0.97 g/cm³.  HDPE can be more rigid as a result.  polypropylene, because of its lower density is used for molding parts with lower weight and more parts of a certain mass of plastic can be produced.

Temperature Differences:

HDPE has a working temperature of 212 degrees F to 200 degrees F. Polypropylene has a melting point between 266 degrees F to 340 degrees F.

U.V. and Chemical Resistance

Polypropylene has good chemical resistance like HDPE but it has poor UV resistance -unless it is stabilized with additives.  HDPE is resistant to many different solvents and has a wide variety of applications. It protects the environment by forming a chemical-resistant barrier to prevent the pollution of soil and groundwater by the liquid constituents of solid waste.

A lot has been written about both HDPE and Polypropylene. Please visit the web to learn more about these very versatile plastics.

 

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Tags: HDPE

Polypropylene- Is it different from Polyethylene?

Posted by Nana Hinsley on Sun, May 01, 2016 @ 01:01

How is Polypropylene different from Polyethylene? Well.....

polyprop structure resized 600Poluethylene structure resized 600

Polypropylene, also know as polypropene is a form of plastic just as polyethylene is. What separates polypropylene from polyethylene for starters is the fact that polypropylene can be molded in essence becoming pliable above a certain temperature. When it cools it will return to its solid state. Polypropylene can be used not only as a structural plastic, but it can be used as a fiber. It also has a high melting point, which differentiates it from polyethylene. One area where polyethylene has over polypropylene is that polyethylene is more stable. Polypropylene has the advantage that it can take repeated motions such as being a hinge.  A hinge made out of polypropylene can be opened and closed many many times, and hold up just fine. This is known as having "good resistance to fatigue". MORE

Polypropylene can be combined with other materials, as can polyethylene. Rubber for example can be added, to make it more pliable.  One of the exciting additives that is added to polypropylene are minerals. These minerals allow a polypropylene sheet to become a synthetic paper.  synthetic paper is essentially plastic paper.  It can be easily printed on. It can be folded, hot stamped, die cut, sewn and more.  Best of all it is environmentally friendly! All of a sudden polypropylene is transformed into a slew of products. Synthetic paper made from polypropylene is used to make banners, membership cards, maps, menus, phone cards, signs, tags, floor graphics, counter mats, and booklets. The list goes on from here!  What is outstanding about synthetic paper is that is is durable, tear and water resistant!(Products made from polypropylene)

Polyethylene has more demand however than polypropylene. Polypropylene is used extensively in the automotive industry as well as the packaging industry. 70% of the polypropylene  uses is for packaging needs for the food industry. It can be made into bottles, food containers, food crates and pallets.

Polypropylene is used to make house wears, appliances and toys. It is also used to make make carpeting and upholstery. The polypropylene is heated and made into fibers. There are so many uses for both polypropylene and polyethylene.

Polyethylene is inert, translucent and creates a lower static charge than polypropylene. That makes polyethylene a candidate to be a sleeve to house collectible documents.  It is "inert" and cannot product mold or mildew.  It is also translucent in nature so it allows less light through it than polypropylene.  It has a lower static charge than polypropylene so it attracts less dust and dirt.  Polyethylene costs more than polpropylene because it has a higher purity (100% virgin).

Here is a list of some of the differences between polyethylene and polypropylene: 

  • Polyethylene and Polypropylene are very similar as far as physical properties.
  • However, Polyethylene can be produced optically clear where polypropylene can only be made translucent like a milk jug.
  • Polyethylene does have physical properties that allow it to stand up better in cold temperatures, particularly when using it as signs.
  • Polyethylene is a good electrical insulator. It offers good tracking resistance, however, it becomes easily electrostatically charged (which can be reduced by additions of graphite, carbon black or antistatic agents).
  • Polypropylenes are light in weight. They have a high resistance to cracking, acids, organic solvents and electrolytes. They also have high melting point and good dielectric properties and are non-toxic.
  •  Monomer of polyethylene is ethylene and monomer of polypropylene is propylene.
  • Polyethylene has a lower melting point compared to the higher melting point of polypropylene. (this may be a good test for you)
  • Polypropylene is not as sturdy as polyethylene.
  • Polypropylene is stiffer and resistant to chemicals and organic solvents compared to polyethylene.
  • Polypropylene is pure, non-stretching and generally more rigid than polyethylene.

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Tags: polyethylene, polypropylene

5 Reasons Why an Engineered BlackOut Cover is Better for Light Dep

Posted by Team SolaWrap and the Green Thumbs. on Mon, Apr 25, 2016 @ 01:46

The goal of creating a light dep greenhouse is nothing new. But what is the most cost effective and labor efficient solution to achieve complete darkness in a greenhouse? Will regular black plastic work as well as an engineered film? Engineered film is plastic sheeting what has additives and is manufactured in a way to make it superior to regular plastic sheeting. It’s a special recipe/ formula specifically for the purpose it is designed to fill.

A light dep blackout tarp/film that is stronger (won’t rip or tear easily) than regular black tarps, and lasts longer in the sun is a noble goal. Enter our engineered film- built to our specifications.

Ultra Blackout tarp achieves the following goals:

  1. Strength:  To achieve a stronger, tear resistant cover you can either add string reinforcement, or you can make it thicker- much thicker. But making it thicker makes it heavier and much harder to move and work with. By adding a layer of diamond scrim between two layers of plastic you get a strong tarp that is easy to work with.
  2. Longevity: Withstands being outdoors in the sun: Most run of the mill black plastic literally decomposes when the sun hits it day after day. By engineering the film and adding a UV additive, this same black plastic, now can have a longer life in the sun. Ultra Blackout greenhouse tarp has an 18 month U.V. guarantee!
  3. Complete darkness: Ultra Blackout is manufactured to be devoid of pin holes.
  4. Optimal Colors: Black on one side, white on the other: The white side of the film serves to reflect much of the light entering the greenhouse and improves the light conditions within the growing area. During the long, low-light winter months this is an added benefit. Putting the white side as the top surface reflects the heat and helps maintain an environment with even heat distribution and lower energy costs. The black side on the inside creates a dark environment.
  5. Meets Measured Test Criteria: Ultra Blackout has the tests to prove it meets standards that have been measured and tested. This insures you get what you pay for and can have a greenhouse blackout tarp that makes you life easier and more profitable.
  6. Click for pricing/ info Search for Greenhouse Plastic, tapes, fire retardant films, plastic sheeting Home page www.globalplasticsheeting.com plastic sheeting, tapes, strapping fire retardant films greenhouse plastic Plastic Sheeting Thickness chart. How thick is best for you?