PVC shrink film machine

Stretch Film vs. Shrink Film, What’s the Difference?

It’s a common misconception that people believe stretch film and shrink film are the same thing. It’s true that both shrink and stretch films are designed to unitize products onto pallets and both are generally made from polyethylene resins. Shrink films are produced on blown film lines and stretch films can be produced on either blown or cast film lines. Outside of those similarities, the two packaging systems don’t have a lot of other common characteristics.

 

Shrink films contain a high percentage of low density polyethylene (LDPE), which is the same type of resin used to make bread bags and newspaper overwrap sleeves.  When fabricated under very specific parameters, LDPE gives shrink film its “shrink”.  The stress or tension required to make the film contract is frozen in during the fabrication process. To activate shrink film, a heat source is required such as a heat tunnel, heat gun, or torch. When sufficient heat is applied to the film, it approaches its melting point and the film begins to draw up or “shrink”. Because the film can only shrink so far, each product to be wrapped has to be matched with a specific size and configuration of film. As film resins go, LDPE does not have good puncture or tear resistance and has a relatively low load holding force. In order to provide sufficient load containment and protection for the load, these films are generally several times thicker than most stretch films.

 

In contrast, most stretch films contain high levels of linear low density polyethylene (LLDPE) and, depending on the end-use application, can stretch from 25 to 300%.  Stretch films are either designed to be applied by hand or by machine. Hand films usually have minimal stretch (25-100%) in order to aid the operator in applying the product and are in many ways similar to a large roll of very thin tape. Machine films on the other hand can have very high stretch levels (150 -300%) and, because they are applied by automated equipment, can be configured to exert very high levels of tension on a load if desired.

 

Shrink films are good for applications where the object to be protected requires five-sided protection (top and four sides) or is very large (boats and industrial equipment). For five-sided protection on finished products such as washer/dryers, refrigerators and other appliances, along with bagged resins and cement/concrete, stretch hooders have started replacing shrink films as the older shrink tunnels are decommissioned and new, more energy efficient equipment takes its place.

 

If you have any interest in shrink film machine, I recommend that you can visit the website of Jumbo Steel Machinery Co., Ltd.

 

For over 25 years, Jumbo Steel has dedicated itself to the research of production technology for PVC shrinkable film. The company has made great improvements in product prescription and machine performance, upgrading the quality and efficiency of PVC shrinkable films. Jumbo Steel PVC shrink film machine has been sold worldwide, and has earned a reputation for its superior machine and outstanding production know-how. Get more details please do not hesitate to send inquiry or contact with Jumbo Steel immediately.

 

 

Article Source: http://www.paragon-u.com/bid/252257/Stretch-Film-vs-Shrink-Film-What-s-the-Difference

Share

Comments Off on Stretch Film vs. Shrink Film, What’s the Difference?

Choosing The Right Shrink Film: PVC Vs. Polyolefin

Shrink film, also called shrink wrap, is a material made up of polymer plastic film. When heat is applied, it shrinks tightly over whatever it is covering. Heat can be applied with a handheld heat gun, or the product and film can be passed through a heat tunnel on a conveyor. Choosing the right, Shrink Film, Heat Shrink Machine and or Heat Tunnel and combination of, is vital to obtaining quality shrink packaging on your products.

 

PVC Shrink Film

 

PVC Shrink film is widely used for a variety of applications

 

The PVC stands for Polyvinyl Chloride. PVC is the third most produced plastic in the world. PVC Shrink Wrap was the most commonly used shrink film, until the introduction several years ago of polyolefin (POF) shrink wrap. Common PVC shrink wrap uses include packaging boxes, CD and DVD packaging, software, small canisters and other non-edible items.

 

PVC shrink film also works very well with automated machines. Sealing strength, storage issues and sealing by products are of the most common drawbacks of PVC shrink wrap. The plasticizer in PVC shrink wrap hardens in cold conditions and softens under hot conditions, therefore compromising the strength of the seal and the plastic. PVC shrink wrap also releases small quantities of Hydrogen Chloride gas into the air and carbon deposits into the sealer. Proper ventilation is required when sealing PVC shrink wrap.

 

Polyolefin Shrink Film

 

Polyolefin shrink film has become the preferred choice by many for packaging products both edible and non-edible.

 

Polyolefin shrink wrap is widely preferred for a variety of reasons including: fewer odour’s when sealing, stronger seal and more flexible storage. Polyolefin shrink film does not contain any chlorine; therefore, they do not produce Hydrogen Chloride gas. Polyolefin shrink wrap does not have any plasticizers, so temperature variation in storage is not an issue.

 

Polyolefin shrink film is used for almost every kind of application including toys, sporting goods, printed wrap, foods, stationary and cards to name a few. Cost and machine compatibility are the main drawbacks of Polyolefin shrink wrap. Polyolefin is commonly more expensive than PVC shrink wrap. Many packagers prefer PVC because of this reason. There are types of polyolefin shrink wrap that are more compatible with machines but polyolefin machine compatibility can be an issue for some packagers.

 

Jumbo Steel Machinery has a proven tradition of pursuing excellence and improving the PVC Shrinkable Film industry, and it will continue to develop its engineering capabilities and raise industry standards. Thus, if you need more information about heat shrink machine, try to visit Jumbo Steel’s website to find the great shrink film machines.

 

 

 

Article Source: https://www.swiftpak.co.uk/blog/choosing-the-right-shrink-film-pvc-vs-polyolefin

Share

Comments Off on Choosing The Right Shrink Film: PVC Vs. Polyolefin

Outstanding PVC Shrink Film Machine Manufacturer – Jumbo Steel

Welcome to the professional manufacturer of PVC heat shrink film machines – Jumbo, providing high quality shrink film machines, and also having good reputation with high quality and high efficiency products and the best services. Furthermore, we have strong R&D team to keep improving our heat shrinkable film making machines to meet the highest standard of our clients. JS 336 model PVC shrink film machine is one of the high quality products that Jumbo takes pride in. Having a simple introduction about JS 336 model below:

 

JS 336 PVC Shrinkable Film Production Equipment
JS 336 PVC Shrink Film Machine

Screw Dia.: 55mm

Lay Flat Width: 200-700 mm

Output: 30-60 kg/hr.

 

PVC Shrink film offer many excellent benefits, such as glossiness, high transparency, durability, water resistance and easy control of shrinkage. They have been applied to a wide variety of product packaging, such as foodstuff, beverage bottles, sporting goods, etc.

 

Over 25 years, Jumbo Steel has dedicated itself to the research of production technology for shrink film machine. We have made great improvements in product prescription and machine performance, upgrading the quality and efficiency of PVC shrinkable films. We have a strong background and engineering experience for whole-plant planning and equipment supply. Jumbo Steel PVC shrinkable film production equipment has been sold worldwide, and has earned a reputation for its superior machine and outstanding production know-how.

 

In addition to supplying the most dependable machinery, we also place emphasis on the technological support and complete production upgrades. This allows our customers to start up or resume production very quickly.

 

Jumbo Steel has a proven tradition of pursuing excellence and improving the PVC Shrinkable Film industry, and it will continue to develop its engineering capabilities and raise industry standards.

 

If you need more information about Shrink Film Machine series, welcome to visit the website of Jumbo Steel to learn further details about our products. Any questions you have are also welcomed to contact with us.

 

Jumbo Steel Machinery Co., Ltd.

No. 4, Road 12, Taichung Industrial Park, Taichung, Taiwan.

Tel: 886-4-23590788(Rep)

Fax: 886-4-23590567

E-mail: sales@jumbosteel.com.tw

Share

Comments Off on Outstanding PVC Shrink Film Machine Manufacturer – Jumbo Steel

PVC Shrink Film Machine

 

Jumbo Steel Machinery Co., Ltd. established in 1986, is the major manufacturer specializing in PVC shrink film machines! Jumbo has more than 25 years experiences provided PVC shrink film machine, and also having good reputation with high quality and high efficiency products and the best services. Furthermore, we have strong R&D team to keep improving our heat shrinkable film making machines to meet the highest standard of our clients. We have Certificates of ISO9001 (since Jan. 15, 2000), Up dated to ISO 9001:2008, CE certificate for straw series machine and PVC heat shrink film making machine. Sold to more than 100 countries and agents in Argentina, Brazil, Chile, Colombia, Egypt, Greece, Indonesia, Iran, Malaysia, Russia, Singapore, Thailand, Turkey…Please feel free to contact us for more PVC shrink film machines information.

Share

Comments Off on PVC Shrink Film Machine