When it comes to flexible packaging films, there are many options to choose from. But there is one film that is often a top pick because of its versatility and high-performance characteristics &#; PET packaging film.
Link to Firsta
PET stands for Polyethylene Terephthalate. It&#;s often referred to by its common name, Polyester, but in the flexible packaging world it&#;s better known as PET.
PET is a thermoplastic-engineered film, which means it can be formed and manipulated in different ways when a specific heat source is applied to it. It&#;s also one of the most environmentally friendly thermoplastics on the market.
Polyester film has been around for decades. It was invented in the s by the U.S. fiber manufacturer, DuPont, under the Dacron® name. Over the next several years, the use of cellophane in various applications soon dwindled as clear polyester film gained popularity because of its strength, insulating properties, and resistance to chemicals and heat. Within two decades of its creation, the film was an industry leader &#; and still is.
So how did PET film become one of the best multi-use plastic films around? Compared to other common films in this category, it delivers a lot more benefits because of these polyester film properties:
There are several types of PET film that meet a wide range of packaging applications.
There are also many grades of PET film that make it compliant with FDA and USDA regulations. Common applications that might require FDA or USDA compliance would include packaging for the food and beverage industry and the medical/healthcare field where sterilized packaging is needed for products such as face shields or surgical instruments and other medical devices.
At PennPac, we carry extensive product inventory including plain, treated, heat-sealable, metallized, and coated polyester films &#; available in different thicknesses, widths, and properties, and in both rolls and sheets.
Our films include:
To download any of our polyester films spec sheets, visit our polyester films page.
High-density polyethylene, also known as HDPE, is another common packaging solution used in the food and beverage industry among other industries. Like PET, it&#;s lightweight and impact resistant but there are a few key differences between the two.
So which packaging option is best? It all comes down to your application needs. PET is likely the better choice for food and beverage packaging, with HDPE being the better option for heavier-duty packaging and shipping needs.
As mentioned earlier, the food and beverage industry is a big user of PET film because of its food-safe qualities. But many other industries rely on PET film. Here are just a few examples:
Our knowledgeable team is ready and waiting to answer any questions you may have &#; just give us a call at 717-664- or connect with us online.
You can also view our FAQ page to learn more about the films and services we offer.
What is polyester?
Are you interested in learning more about Industrial PET Film Manufacturer? Contact us today to secure an expert consultation!
Polyester film, often called PET (polyethylene terephthalate), has exceptional physical properties for a plastic material, including high tensile and high temperature strength, thermal stability, uniformity, transparency, insulation properties thermal and electrical and chemical resistance.
Our large warehouse contains over 100 types of polyester films available in a wide variety of thicknesses and coating combinations. Polyester film provides exceptional performance in a wide range of applications and is often far superior to other materials such as PVC, acetate and polypropylene.
Polyester film has been the core business of HIFI Polyester Film since its foundation 25 years ago and still represents the company&#;s main material today. HIFI&#;s large warehouse contains over 100 types of polyester ready for conversion into reels and sheets.
How does the production process work?
Polyester or polyethylene terephthalate (PET) is a plastic material produced by reacting terephthalic acid with ethylene glycol, two substances produced in the crude oil/naphtha cracking chain. During production, polyester &#;chips&#; are fed into a heated extruder and the molten polyethylene terephthalate (PET) is then transferred to a chill roll, which shapes it into an amorphous state. It is then oriented biaxially through a process known as modeling. The most common method is the sequential process, in which the film is first pulled in the direction of the machine with heated rollers and then pulled in a transverse direction, i.e. at 90° to the direction of travel, in a heated oven. Modeling ratios are typically between 3 and 4 in each direction.
Once the modeling process is complete, the film is &#;heat set&#; or crystallized under tension in the oven at temperatures generally above 200°C. The heat setting step prevents the film from assuming its original unstretched shape again and locks the molecular orientation in the plane of the film. The orientation of the polymer chains is responsible for the high strength and stiffness of biaxially oriented PET films. Another important consequence of molecular orientation is the fact that it causes the formation of numerous crystallized nuclei. Rapidly growing crystallites reach the edge of the neighboring crystallite and remain smaller than the wavelength of visible light. As a result, unfilled, biaxially oriented PET films are remarkably crystalline, despite their semi-crystalline structure.
What are the advantages of polyester film?
Polyester films have many advantages over other plastic products, including thermal stability and tensile strength. They also have excellent gas and humidity barrier properties, fair transparency and chemical stability.
The many benefits of polyester films can be exploited in different ways depending on the wide range of possible applications, some of which are listed below&#;
Durability &#; hanging displays, tags and labels
Transparency &#; overlamination, archival storage, safety clear section film
Thermal stability &#; oven-safe packaging film, electrical insulation at elevated temperatures
Printability &#; with different techniques, including offset and digital printing, flexography, rotogravure
Whiteness &#; like synthetic paper especially for printing
Rigidity and flatness &#; for tickets, tags and membership cards
Sealability &#; ability to heat seal over a wide temperature range
Chemical stability &#; medical test strips, labeling of hazardous substances
Want more information on Industrial PET Film Supplier? Feel free to contact us.