Maya Ellison
Plastic straps are primarily made from one of two different plastic resins: Polypropylene (PP) or Polyester (PET). Polypropylene is the most common type of plastic strapping and is used in a wide variety of packaging applications. It is versatile, economical, and can be used in almost any strapping application. Polyester strapping is generally smooth in texture and is used to secure larger products and create unit loads for shipment or transport. It has better tensile strength and respectable heat tolerance compared to polypropylene. Nylon is another option for plastic straps, but it is less common due to its high price.
| Characteristics | Values |
|---|---|
| Plastic strapping resins | Polypropylene (PP), Polyester (PET), Nylon |
| Polypropylene use cases | Versatile, low cost, high volume, outdoor storage, machine grade strapping |
| Polypropylene coil weight | 30 pounds |
| Polypropylene tensile strength | 2000 lbs |
| Polypropylene elongation | 4-10% |
| Polypropylene temperature range | Freezing to upper range of ambient temperatures |
| Polypropylene UV life | 30-90 days |
| Polypropylene colour | Black |
| Polyester use cases | Higher initial tension, rigid loads, impact absorption, heavier loads, longer storage times |
| Polyester coil weight | 50 pounds |
| Polyester tensile strength | 2000 lbs |
| Polyester elongation | 2-6% |
| Polyester temperature range | Freezing to upper range of ambient temperatures |
| Polyester UV life | Several months |
| Polyester colour | Green |
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What You'll Learn
Polypropylene (PP) straps are the most common plastic strapping
Polypropylene strapping is versatile, economical, and suitable for light to medium-duty applications. It is used for bundling, carton closing, and tote security. It is also suitable for outdoor storage for limited periods, with a UV life of 30 to 90 days depending on sun intensity and colour. Black polypropylene straps are best suited for outdoor use.
Polypropylene straps are water and moisture-resistant and can withstand temperatures ranging from freezing to ambient. They offer significant elastic recovery, elongating by about 4-10% when tensioned to their working range. This property enables the straps to contract when the package shrinks, providing tight and secure fastening.
Polypropylene strapping is available in a variety of tensile strengths, widths, and core sizes, catering to diverse packaging requirements. It can be printed on for security and marketing advantages. Additionally, polypropylene straps can be sealed using heat produced by ultrasonic waves, creating a strong weld. Overall, polypropylene (PP) straps are a popular choice for plastic strapping due to their versatility, durability, and cost-effectiveness.
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Polyester straps are used for rigid loads and higher initial tension
Plastic strapping is primarily made from either polypropylene (PP) or polyester (PET) resins. Polypropylene is the most common type of plastic strapping and is used in a variety of applications due to its versatility and low cost. It is suitable for light-duty packaging and bundling, such as food, beverages, timber, and other lightweight packages.
Polyester strapping, on the other hand, is a less common but highly effective alternative. It is known for its strength, durability, and ability to maintain tension for long periods. Polyester straps are ideal for rigid loads and can absorb impact during transit. They are often used as a replacement for steel straps in heavy-duty applications such as shipping bricks, metals, beverage pallets, and other heavyweight packages.
One of the key advantages of polyester strapping is its ability to handle weighty loads. For example, Dynaric/PolyChem's Ultraband polyester strapping can withstand tensile strength of up to 2000 lbs. This makes it suitable for securing large and heavy loads during in-plant transfer, storage, and shipment. Its resistance to elongation and high strapping machine operating efficiency further enhance its applicability in various industries.
When compared to polypropylene, polyester strapping has a glossy and smooth finish. It feels more rigid and slippery to the touch, while polypropylene feels more flexible and rough. Polyester is made from denser and stronger plastics, allowing it to handle heavier loads of over 1,000 lbs, with some grades offering tensile strength ranging from 1,500 lbs to 2,500 lbs.
Overall, polyester straps are the preferred choice when higher initial tension is required to secure rigid loads effectively. They are commonly used in industries such as steel, lumber, and construction, where durability and strength are crucial for transporting large and heavy objects.
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Nylon straps are an option, but less common
Plastic strapping is primarily made from one of two different plastic resins: Polypropylene (PP) or Polyester (PET). Nylon is another option, but it is less common nowadays. Polypropylene strapping is the most common form of plastic strapping and is used in a wide variety of applications. It is available in a range of tensile strengths, widths, and core sizes, and it is also versatile, economical, and water-resistant. PP strapping is typically made from virgin resins or a virgin/recycle blend, depending on the quality required for its intended use.
Polyester (PET) strapping is the second strongest type of strapping available and is often used as a substitute for steel strapping. It is made from recycled materials, usually recycled plastic bottles, which gives it a green tint. PET strapping has high strength, stiffness, and elongation resistance, and it is able to maintain tension for long periods. It is also smooth in texture but can be embossed to provide friction and reduce slipping.
Nylon straps are a less common option for plastic strapping, but they do offer some advantages. Nylon strapping has high retained-tension capability and is commonly used to unitize heavy loads. It can be an effective choice for applications that require high tension and strength. However, other materials like polypropylene and polyester have become more widely used due to their versatility, availability, and cost-effectiveness.
The choice between polypropylene, polyester, and nylon strapping depends on the specific application and requirements. Polypropylene is versatile and economical, polyester has high strength and stiffness, and nylon offers high retained-tension capability. Additionally, factors such as the size, weight, and nature of the product being strapped also play a role in determining the most suitable strapping material.
In summary, while nylon straps are an option for plastic strapping, they are less common compared to polypropylene and polyester straps. Nylon straps have specific advantages in certain applications, but other factors such as availability and cost have contributed to the wider use of alternative materials.
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Plastic strapping is used for bundling and securing products
Plastic strapping is a versatile material used for bundling and securing products across various industries. It is made from plastic resins, primarily polypropylene (PP) or polyester (PET), with nylon being another, less common option. Polypropylene is an economical choice, offering different tensile strengths, widths, and core sizes to cater to specific applications. It is also highly customizable, as it can be printed on during or after production for security and marketing advantages. PP strapping is commonly used for light to medium-duty bundling, palletizing, and unitizing applications. It can be applied manually with buckles or hand tools, or with semi-automatic and automatic strapping machines.
Polyester strapping, on the other hand, is the most commonly used polymer strapping material, known for its strength and durability. It is ideal for packaging loads that are susceptible to shifting due to its high elongation and recovery capabilities. Polyester strapping can absorb impact during transit and is a better alternative when higher initial tension is required to contain loads compared to PP strapping. It is also smooth in texture and usually made from recycled materials, often green plastic bottles.
Plastic strapping is a cost-effective and efficient solution for securing products during transportation, storage, and handling. It is heavy-duty, durable, weather-resistant, and long-lasting, making it perfect for bundling goods of various shapes and sizes. The straps are placed under tension to create a strong and secure connection, preventing goods from slipping or falling during transport. This method is particularly useful when handling heavy and bulky items, such as machinery, construction materials, and pallets.
In addition to polypropylene and polyester, plastic strapping can also be made from nylon, which has the greatest specific strength of the three plastics but is rarely used due to its high price. Plastic strapping is a lower-plastic-use alternative to stretch wrap, simplifying waste handling and recycling for the receiving party. It is also moisture-resistant and effective across a wide temperature range, making it suitable for outdoor storage for limited periods.
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Plastic strapping is made from resins or recycled materials
Plastic strapping is a high-tensile-strength banding material used for packaging applications such as carton closing, bundling, and tying together palletized and unpalletized materials for in-plant transfer and shipment. It is economical, recyclable, moisture-resistant, and effective across a wide temperature range.
Plastic strapping is primarily made from one of two different plastic resins: Polypropylene (PP) or Polyester (PET). Nylon is another option but is less commonly used nowadays. Polypropylene straps are typically made from virgin resins or a virgin/recycle blend, depending on the required quality. Virgin PP resin is often used in machine-grade strapping due to its impact on strap quality, machine efficiency, and process efficiency.
Polypropylene (PP) strapping is versatile, economical, and comes in various tensile strengths, widths, and core sizes. It is used in many general-duty applications, including bundling, carton closing, and tote security. PP strapping is also water and moisture resistant and can be used for outdoor storage for limited periods.
Polyester (PET) strapping, on the other hand, is used to secure larger products and create unit loads for shipment or transport. It has high strapping machine operating efficiency and is effective for strapping smaller/lighter products. PET strapping is typically made from recycled materials, such as bottle flakes or reprocessed pellets, and can be continually enhanced to near-virgin quality between each use. Most PET strapping is green due to being made from recycled plastic bottles.
In summary, plastic strapping is made from resins or recycled materials, with Polypropylene (PP) and Polyester (PET) being the most common types. The choice of resin or recycled material depends on the intended use and required quality of the strapping.
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Frequently asked questions
Plastic straps are made primarily from Polypropylene (PP) or Polyester (PET). Nylon is another option but it is less common.
PP strapping is used for light to medium-duty unitizing, palletizing, and bundling. It is also used for carton closing and tote security.
PET strapping is used to secure larger products and to create unit loads for shipment or transport. It is also used for bundling products together and securing pallet loads during storage and transportation.
PET strapping has better tensile strength, higher heat tolerance, and greater elongation recovery than PP strapping. It also has better stiffness and elongation resistance, which may allow the use of a dimensionally smaller strap.
