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Polyethylene 101: All About Construction and Agricultural “C&A” Sheeting

Posted by on Mon, Apr 6th, 2015 at 1:21 pm

Construction & Agricultural Sheeting, known as C & A sheeting, is a polyethylene sheet designed for general purpose construction, agricultural, and industrial usage. Whether you need all-weather protection for indoor or outdoor storage; rot, mold, and mildew resistance; waterproofing protection from moisture, grease, and oil; or a barrier against solvents, acids, or alkalis, C&A industrial sheeting is tough, flexible, lightweight and easy to handle. The following are all the details you’ve ever wanted to know about C&A sheeting.

Basic Uses:

Used in a wide variety of applications, polyethylene provides an excellent vapor barrier for the protection of concrete slabs and foundations. Proper placement of polyethylene sheeting, including clear plastic sheeting, in walls during construction can almost completely prevent ambient air and moisture infiltration into homes and buildings, thus increasing their energy efficiency. Agricultural applications (black sheeting only) include retention of soil moisture, inhibition of weed growth, and coverage of pit and trench silos for inexpensive storage. This sheeting can even be used for your greenhouse.


The specification covers both black and clear 2, 3, 4, 5, 6, 8, and 10 mil sizes. Most common widths and thickness include 10′, 12′, 18′, 20′, 24′, 28′, 30′, and 40′.

Life Expectancy:

Clear polyethylene sheeting is not recommended for greenhouse use or any other application involving long-term exposure to sunlight. Black sheeting is recommended for applications not exceeding 90 days of sunlight exposure. Special additives are available at request for extended outdoor applications for up to 2 years.

Shelf Life:

Polyethylene sheeting has a shelf life of approximately 2 years if not exposed to sunlight or extreme heat.


Due to a variety of resins and additives available, it is often difficult to bond two pieces of film together. Two adhesives that have proven to be successful in the past are Universal Adhesives’ Spray Adhesive and DURO All-Purpose Spray Adhesive distributed by Loctite Corporation.

Temperature Range:

The usable range for LDPE has been defined as -60 °F to 150 °F.


This sheeting is rated as a Class 4- LDPE for recycling purposes.

Additional limitations may or may not apply depending on the specific application and product. An experienced and knowledgeable salesman can help answer any other questions. Contact us when you are ready to obtain your polyethylene sheet for construction, to discuss price or any other questions you may have.

polyethylene sheet for construction

Construction & Agricultural Sheeting
C & A sheeting

Stand Up Pouches Are Becoming More Popular

Posted by on Mon, Apr 6th, 2015 at 1:15 pm

reclosable-ziplock-pouchesIn the packaging world, Stand Up Pouches and Re-Closable Pouches are becoming more popular due to the numerous benefits they provide.

Stand Up Pouches and Re-closable Pouches can be an excellent option for a variety of packaging requirements including, but not limited to, food items (rice, seafood, flour, grain, pasta, cereal, granola, etc), health food items, coffee and tea products, beverage mixes such as chocolate powders, pet food, bird food, pet treats, and non-food items such as grass seed, Tobacco, and healthcare products.

These popular, versatile, and attractive pouches provide the following advantages:

  • Laminations of multiple layers of film… Polyethylene to polyester, polyethylene to nylon, and polyethylene to metalized PET, and more.
  • Fresh products and increased shelf life
  • Superior strength
  • Protective barriers to moisture, odor, and air
  • High visibility with plenty of space for brand building
  • Eye-popping graphics with custom printing
  • Custom sizing to meet specific packaging needs
  • Customer appeal and aesthetic appeal for retail display
  • Ease of use and ideal for storage
  • Convenience with specialty features such as re-closable zippers, tear notches, hang holes, or die-cut handles

With so many benefits, Stand Up Pouches and Re-closable Pouches make the perfect package for a vast array of applications. It’s no wonder these pouches are growing in popularity!

Choose HDPE for your Bag Inserting Equipment

Posted by on Mon, Apr 6th, 2015 at 1:11 pm

HDPE, what is it and what can it do for you?

HDPE film, or high-density polyethylene film, is a linear polymer prepared from ethylene by a catalytic process. High-density polyethylene is just that, a high density, closely packed structure with a somewhat higher chemical structure than low-density polyethylene film (LDPE).

So why choose HDPE?

The advantages alone can answer why. HDPE film is an extremely versatile material with advantages such as non-blocking characteristics in addition to added stiffness, impact and wear resistance, flexibility, anti-static properties, chemical resistance, food contact acceptability, processability, and toughness. Another benefit of HDPE film is that it is harder, more opaque, and can withstand rather higher temperatures than LDPE film. HDPE also has advantages in many machine applications such as Pearson’s automated insertion machines, OK International’s packaging automation systems, and K&R’s polybag inserter systems. These machines place the bags in cases or shipping containers with even cuffs around the flaps.

With LDPE blocking can occur, which stops production and causes downtime. Neither of which you want on high-speed packaging lines. However, HDPE homopolymer resins are linear in nature and these polyethylene high-density film resins exhibit hard, slippery surfaces that resist blocking. Therefore, with HDPE film you don’t have stops in production or downtime. The bottom line is that bag inserter lines love HDPE’s nonblocking, stiffer film characteristics. And for an added benefit, polyethylene high-density film has a lower moisture and oxygen transmission rate, which allows for longer product freshness.

If you weren’t aware of high-density polyethylene (HDPE) and its advantages before, I bet you’re glad you are now. Contact us today to place your oder!

high-density polyethylene film

Bag inserter line

How to Measure for a Pallet Cover or Box Liner

Posted by on Mon, Apr 6th, 2015 at 1:07 pm

Determining the size of your polyethylene bag as a pallet cover or box liner is quite simple. All that is needed is some basic geometry skills.

Pallet Cover

To figure out the size of a pallet cover, whether it is hard plastic, cardboard, thermal, or custom, you need to know the dimensions of the load. (length X width X depth). Once the load dimensions are known, the following steps can be taken to determine the size of the pallet cover:

  1. To start you should consider your width as the larger of the dimensions. (width or depth)
  2. If a pallet load is 48” wide X 42” deep X 36” high you take the 48 inches and add 4 inches as you do not want a cover that’s too tight. The bag width will be 52 inches.
  3. Now we will add another 2 inches to the depth (42) to get the gusset. The bag thus far is 52 X 44.
  4. To determine the length we need to take the height (36) and add half the depth since the bag has a seal that will fall in the middle of the top of the pallet. We take our depth of 42 and divide it in half to get 21. Now we add 21 +36 = 57. We also typically add another 2 inches so that the load has some extra coverage.
  5. The final cover dimensions are 52 X 44 X 59.

Box Liner

Determining appropriate box liner dimensions is similar to determining that of pallet covers dimensions except now the bag will sit inside the box rather than covering a pallet.

Let’s take a box that’s 14” length X 12” depth X 21” high.

  1. Add 2” to the width (14”) to give us 16” wide.
  2. Then add another 2” to the depth (12”) to give us 14” depth. Our first to dimensions of the bag is 16” X 14”. This represents the bag width and gusset.
  3. Now the tricky part is determining the length of the bag. We are going to take the box depth of 12” and add that to the height of 21” to get 33”. Now add 6 more inches so the bag can be tied and closed properly when filled inside the box.
  4. Our final bag dimensions are 16 X 14 X 37.

These are the basic rules, but some Pallet covers and box liners require some adjustments in size depending on the applications.

If you need assistance, just send us your box or load size and we will help with the calculations for your pallet cover or box liner. You can also contact us when you are in need of these products for your business.

Gaylord Liners are used for many applications

Posted by on Mon, Apr 6th, 2015 at 1:01 pm

A gaylord box is a pallet-sized box, typically cardboard, that is used for storage and shipping of bulk quantities.

In most cases, the products being shipped within a gaylord box are enclosed in an inner plastic bag that is used to protect the contents of the gaylord box. Those large bags, or liners, can have a variety of names: gaylord liners, tote liners, bin liners and combo liners are the most common.

They’re designed to protect the products in the box from outside pollutants, toxins, and other contaminants during processing, storing, and transporting. Therefore, they must be strong and tear-resistant. These liners are used for many different packaging applications such as food packaging, resin products, color concentrates, chemicals, powdered products, pharmaceutical products, dispeners, metal particles, and many more.

Depending on the product the liners are protecting, they are available in a wide array of structures. A few questions to consider:

  • Do I need low density resin, or high density resin?
  • Does it need to be bolstered for added strength with compounds like hexene or metallocene?
  • Does the liner need to be USFDA approved?
  • Do anti-stat properties need to be added?

Gaylord boxes come in a wide variety of shapes and sizes, and therefore, so do gaylord liners. When requesting a quote for a gaylord liner, you’ll need to know what size box or bag you’re using. Measure your gaylord box by width (W), length (L), and depth (D). A good rule of thumb for figuring out an appropriate liner size for your box would be the following: See diagram.

gaylord liners
  • Width (W) of the liner = Box width + 2 inches
  • Length (L) of the liner = Box length +2 inches
  • Depth (D) of the liner = Box depth + half of the box length + 12 inches.

However, you may need your liner size to be larger if you plan on tying off the enclosed product at the open end of the liner. It’s probably best to inform your sales representative not just of the box dimensions, but also how you’ll be shipping/storing your product so they can make a recommendation of the liner size you’ll need.

Some common gaylord liner sizes include:

  • 52 x 44 x 96 x 1.25 mil (thickness)
  • 52 x 44 x 96 x 2 mil
  • 50 x 38 x 90 x 3 mil
  • 50 x 44 x 76 x 4 mil

We monitor our comment sections, so if you have any questions on Gaylord liners or where to order, please feel free to ask them.

Your guide to purchasing printed resealable plastic bags

Posted by on Mon, Apr 6th, 2015 at 12:49 pm

Have you ever felt overwhelmed with all the decisions that go into the purchasing process for printed resealable plastic bags?

Resealable Printed Bags

img_0060 resealable - ziplock pouch-resized-600You’re not alone. Between the materials, ink colors, printing colors, printing images and pictures, not to mention the additional options available, the varieties are endless. We decided that a summary of some of the many options available for printed resealable plastic bags and a few hints to use when purchasing your bags.

  • There are many types of plastic materials and additives that resealable bags can be produced with; FDA approved film for use in packaging food, EVA (ethyl vinyl acetate), additives for strength and freezing, anti-static materials, low density or high density polyethylene, and polypropylene, just to name a few.
  • Printed resealable plastic bags are also available in many film colors, with the option for clear to see your products inside. Process printing up to 10 colors brings your package to life on the shelf and will turn heads at the retail stores. Any image or picture can be printed on your reclosable bag to ensure your bags will be noticed and your company’s name and logo will be remembered.
  • Structural options for resealable plastic bags include bottom gussets, tamper evident seals, hang-holes, vent-holes, inno-lock, and peal and seal.

Six hints to consider when purchasing printed resealable plastic bags:

  1. Choose the correct thickness (mil) and film structure for your specific product application.
  2. Design your print to be large and vibrant so it can be read easily from a distance.
  3. Print on both sides of the bag (it’s no extra cost).
  4. Make sure your bag is large enough to hold your product but not over-sized and baggy.
  5. Be sure that the material is the right match for your product so your package can handle the weight of your product. Remember that if your bag rips your product could be damaged.
  6. Frozen products require freezer grade polyethylene or the film will become brittle and crack.

So the next time you are purchasing your printed resealable plastic bags, think of it as an opportunity to be creative and original with the wide selection of options. You are limited only by your own imagination!

Printed Pallet Covers Advertising benefits pellet fuel companies

Posted by on Mon, Apr 6th, 2015 at 12:43 pm
thumbnailcafpaetc-resized-600Custom printed pallet covers are the sure fire way to advertise and improve load appearance while preventing pallet tampering and reducing freight damage. Freight damage can easily occur by your freight being loaded, unloaded and reloaded several times, in and out of warehouses and into and out of different trucks before delivery. The more times your freight is handled, the greater the chance of damage to your freight. Pallet covers help to reduce any damage to your freight so it arrives to you in the best possible condition.

In an industry such as the pellet fuel industry, a pallet cover can serve many purposes. You’ve got to keep your products dry during transportation and outside storage, in addition to ensuring your bags are clean for your customers. At the same time, you can show off your logo and company name with sharp vibrant printing that looks good even under the toughest conditions.

Ever wonder what is under those pallet covers when walking through big home improvement stores like Home Depot? Printed pallet covers become a great reminder to your customer to pick up another load of pellet fuel bags, all at a low advertising cost.

When purchasing pallet covers your opportunities are endless. Heavy-duty pallet covers are made specifically to fit your load size. Plus, film is available in many colors and your company logo can be printed on the front and back of the pallet. Any knowledgeable sales representative can be a valuable source when trying to decide on the best pallet cover for your specific application needs.

Pictured: Pellet Fuel Stove

POLYETHYLENE 101 “Flexographic Printing”

Posted by on Thu, Apr 2nd, 2015 at 8:55 pm

Bold, Sharp, Eye-catching Packaging with Flexographic Printing

In this day and age, high-end printing and eye-catching graphics are a necessity in the packaging industry in order to have a competitive edge and produce brand recognition with customers. Ever wonder how your package is printed with such accuracy to present that “wow” factor? The form of digital printing is referred to as Flexographic Printing, a modern-day form of printing that can be used on many substrates including Polyethylene film.

The process of Flexographic printing using safe inks was approved by the Food and Drug Administration in 1949 and requires a three-step process of platemaking, mounting, and printing.

  • Platemaking can occur in three methods, the first of which is plate development using light-sensitive polymer. The second method uses a computer-guided laser to etch the image onto the printing plate. And the third method requires that the plate goes through a molding process.
  • Mounting is a process used to ensure an accurate picture image. For each color to be printed, a plate is made and eventually put on a cylinder, which is placed in the printing press machine. Mounting marks are put on flexographic plates to help with precise alignment on the cylinder. These marks are key to aligning each color in the printing press. Equipment is extremely important at this point in the process as highly accurate and specific machinery is made for mounting these plates on the printer cylinders.
  • Printing is the final process in flexographic printing and produces the end result of a sharp-looking package. The process requires that a positive mirrored master of the required image is created as a 3D relief in a rubber or polymer material. The image areas are raised above the non-image areas on the rubber or polymer plate and ink is transferred from the ink roll to the anilox roll where the excess ink is removed before inking the printing plate. The polyethylene film is finally pressed between the plate and the impression cylinder to transfer the image.

Next time you’re admiring your bold printing and graphics on your polyethylene package or looking for a new and improved look for your package with a company near you, remember that flexographic printing can achieve the best results. This complex printing process is the key to producing a polyethylene package that your customers will continue to recognize! Give us a call to discuss the details of how we can help your company.

flexographic printingmounter_easy[1]-resized-600

How Polyethylene film is made

Posted by on Thu, Apr 2nd, 2015 at 8:51 pm

The process for making polyethylene film and bags is called extrusion. This plastic film manufacturing process starts with melting down small plastic pellets, ( called resin ), until they become molten and pliable.


Plastic Film Manufacturing Process

The molten plastic is pushed, ( extruded ), through a circular die to form a continuous tube of plastic called the bubble. The bubble is inflated with air to the desired diameter and drawn vertically up a tower giving it time to cool before it is flattened to its lay-flat width. The thickness of the film is controlled by the speed at which it is pulled from the die. The width of the film is controlled by the amount of air inserted in the bubble.


Plastic Film Manufacturing Process

Film color can be changed in the molten process by adding resin pellets that contain colored pigment.

Many things can be done during this “inline” process. A printing press may be printing images, instructions, warnings, company logos, ect.. on the film. A bag making machine can seal and perforate the film to form varying lengths of bags on rolls. The film can be cut and separated for individually cut bags. You can also add vent holes, which are punched through the film in a variety of patterns and sizes.

The inline plastic film manufacturing process has some further processing limitations. If the film requires more technical alterations then rolled film will be taken off the extrusion line to be further modified in what is known as out of line converting. Here is where you see Process printing and laminating, in addition to the plastic bag manufacturing process of making side weld bags, reclosable bags, and wicketed bags is done out of line.

Plastic Film Manufacturing Process

Tri-Cor Improves its Image with HubSpot®, Kuno Creative, & Fahoury Ink

Posted by on Thu, Apr 2nd, 2015 at 8:45 pm

Tri-Cor Flexible Packaging has joined forces with a great team of experts to improve the company’s image and bring the polyethylene packaging industry to the web world.


With HubSpot’s® and Kuno Creative’s inbound marketing and custom website design expertise, as well as Fahoury Ink’s copywriting and online messaging proficiency, Tri-Cor aims to broaden our range and reach more customers on the internet.

Tri-Cor understands that today’s world revolves around the internet and therefore has set out to create a website that is easier for our customers to find the products they are looking for. Our new website, which you can expect to see hit the web in the next month or two, will be featuring a full product line to satisfy our customers and improve our inbound marketing.

What is inbound marketing?

Inbound marketing is a marketing strategy designed to build a relationship between our product (polyethylene packaging) and our customers (you!).

What can you expect from Tri-Cor’s new website design?

The site will contain valuable content consisting of detailed descriptions of all our products, sharp product pictures, depictions of the markets we serve, quote request forms, blog postings to keep you informed, links to our social media pages, and much more to ensure a user-friendly and more navigable site.

At Tri-Cor we are excited for all that is to come with our improved image, growth, and advancements and hope you find these changes confirming Tri-Cor as your trusted source for your polyethylene packaging needs.

For more information on HubSpot®, Kuno Creative, or Fahoury Ink LLC, you can visit their websites listed below:


Kuno Creative:


Fahoury Ink LLC:

Fahoury Ink
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