Shrink Wrap also known as
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Shrink Film
is a material made up of polymer plastic film. When heat is applied to the Shrink Film it shrinks tightly over whatever it is covering. Heat can be applied with a handheld heat gun (electric or gas) or the product and film can pass on a conveyor through heat or shrink tunnel.
There are a variety of uses for Shrink Film. Manufacturers and businesses alike turn to Shrink Fim to protect and display their goods. A shrink-wrapped item in a store will remain clean no matter how many people pick it up and examine it. Shrink-wrapping also offers a psychological benefit to the consumer, creating an &#;untouched by human hands&#; appearance that makes your goods look &#;factory-fresh.&#;
The two most commonly used types are:
PVC Heat Shrink Film
PVC or Polyvinyl chloride was up until recent times before the release of Polyolefin, the most commonly used Shrink Film available. However, it was never been allowed to be used within the Food Industry as it releases small quantities of hydrogen chloride into the air and carbon deposits onto the sealer. Proper ventilation is required when sealing
.
uses include packaging boxes, CD and DVD packaging, software, small canisters, and other non-edible items.
Polyolefin Heat Shrink Film
Whilst Polyolefinis commonly more expensive than PVC Shrink Wrap, it has become the preferred choice for packaging products both edible and non-edible.
is preferred for a variety of reasons including fewer odors when sealed, providing a stronger seal and can be stored in a wide range of temperatures, and does not harden and soften in different environments.
Applications include toys, sporting goods, printed wraps, food and drink packaging, stationery, and cards just to name a few.
L-Bar Heat Sealers
The L-Bar type Heat Sealers are great for both forms of Shrink Wrap. These heat sealers have three sealing bars designed to make sealing centerfold shrink film easy and efficient. Within our range, we have both manuals for low to medium output operations and semi-automatic L-Bar Sealers for larger volume work.
Benchtop Heat Sealers
Recommended for low output operations that are sealing 10 items or less per hour. Hand Impulse
come in two machine types :
&#; Round wire sealers are more expensive but are more efficient because of the ability to seal and cut in one motion.
&#; Flat wire sealers are more affordable but do not seal and cut in one motion.
Heat Shrink Machines:
We offer three types of Shrink Film Heat Guns.
is a gas-powered tool designed to shrink LDPE
pallet bags,
pallet shrink tubing, polythene sheeting, and other shrink films.
: designed for the smaller user like retail shops: small volume
- ideal for larger volume applications
For more Wine PVC Shrink Film Manufacturerinformation, please contact us. We will provide professional answers.
Heat Shrink Tunnels
Ideal for medium to high-speed output operations. Shrink tunnels come in a variety of sizes and dimensions and can be simply connected to a production line with a conveyor belt that&#;s fed in and out. We recommend that anyone wrapping more than 150 products per day consider purchasing a Shrink Tunnel. Shrink Tunnels are used within the chemical, medicine, hardware, cosmetics, handicraft, stationery, electronics, food, and textile industries.
Foot Operated Heat Sealers
The
are excellent option for wrapping shrink bags and poly bags at high speed. We offer two types of foot sealers in a variety of widths :
&#; Flat Wire Foot Operated Sealers come with a flat sealing wire to seal a bag. Do not cut. They are an excellent option for poly bags.
&#; Round Wire Foot Operated Sealers allow users to seal and cut shrink bags in one motion.
Polyvinyl chloride (PVC), polyolefin (POF), and polyethylene (PE) (also known as polythene) shrink films are durable, strong, and reliable materials used both for packaging products themselves, and also for protecting and securing palletised goods during transit. Shrink films are a popular choice because they are low cost, easy to use, and provide excellent protection in transit, and for goods being displayed on shelves for consumers.
Each material possesses different qualities and so choosing the correct type of film is important to ensure that your goods arrive in the best possible condition. But how do you know which is the right film for your needs?
In this article we will explore the advantages and disadvantages of polyolefin, PVC and polythene shrink wraps, so that you can choose the most appropriate for your needs. (If you&#;re new to the industry and want to learn more about shrink films in general, check out our &#;Complete Guide to Shrink Wrap&#; article.)
Polythene shrink film is made of a plastic that shrinks when it is heated, allowing it to conform around the product that needs wrapping. It is a common choice of packaging for the distribution of beverage bottles, hand soap and cans due to its durability to wrap around multiple products. Polythene shrink film (PE) can come in the forms of Low-Density Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), Medium Density Polyethylene (MDPE), and High-Density Polyethylene (HDPE).
The main differences consist of the molecular structure, their properties and purpose:
LDPE is the most common form of plastic film and is the least dense of the four types in terms of structure density. It is flexible, transparent, and very resistant. This material is often used for plastic, frozen and waste bags, meat and food products for the consumer to use in their home. Typically, it has a density of 0.917g/cm3 to 0.93g/cm3 and is normally around 0.4 mil to 40 mil thick.
LLDPE is more of a linear polymer structure. Its malleable strength provides a good cover to prevent any tearing and puncturing. It can be used for a range of versatile products including heavy duty bags, toys, and cable covers. LLDPE typically has a density of 0.965g/cm3 or more, and around 0.4 mil to 40 mil in thickness.
MDPE is the least common. Pond liners for example can be made using MDPE or blended with LLDPE or LDPE to achieve a balance of strength and flexibility.
HDPE is both a lightweight yet strong and tougher material. Similarly to LDPE and LLDPE, it holds good impact resistance. HDPE is typically used for both construction materials such as pipes, and consumer products including shampoo bottles and milk cartons. Typically has a density of between 0.93g/cm3 to 0.97g/cm3 and a thickness which ranges from 12 mil to 100 mil thick.
For a more indepth anaylsis read our article on LDPE vs LLDPE vs HDPE.
When searching for the correct wrapping material for your items, it is important to understand PE&#;s advantages and disadvantages.
There is another type of polyethylene shrink film, known as Polyethylene Terephthalate (PET). It is an excellent versatile thermoplastic polymer, often used to create plastic bottles and containers, electronic appliances, and consumer foods such as tupperware. It is UV resistant and can hold a high melting point, for the products that require sterile conditions.
As it&#;s a high performing wrapping film, it is more expensive than PVC and PE. PET has a transparent material, yet sometimes it can be a milky-white colour; it holds tensile strength whilst also being lightweight.
Made of thermoplastic polyolefins, polyolefin shrink film (POF) is a cost-effective, multipurpose wrap. Its typical use is for food-related products, due to the glossy material transparency. It helps with the appearance of the wrapped goods, while also locking in the moisture of items that may be protected, such as tomatoes, cakes, and meats; making it beneficial for the consumer to see what they are buying when shopping at a supermarket.
Polyvinyl Chloride (PVC) is produced as a thinner plastic, making it a popular choice for the wrapping of DVD&#;s and CD Jewel Cases for consumer purposes. When heated, the film is applied around the object and then heated. The film shrinks tightly to the item, preventing the action of tampering with the product.
Industrial Polythene is one of the UK&#;s leading suppliers of polythene packaging products. We provide a fantastic range of strong and durable shrink film materials to match our customers&#; requirements, so that they have the utmost protection when transporting and selling their products.
Whether your products require PVC, Polyolefin, or Polyethylene shrink film, contact us today for a free quote.
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