A Comprehensive Guide to Automatic L-Bar Sealers

Streamline Your Packaging Process

In today's fast-paced business environments, efficient and cost-effective packaging solutions are essential. An excellent way to achieve this is by incorporating an automatic L-bar sealer into your production. This automated machine provides a range of benefits, including increased productivity and efficiency, versatile packaging options, precise and high-quality seals, and reduced labor costs. 

Zhongfu Packaging are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

In this guide, we’ll go over the following:

• Equipment definition
• Different types of seal bars
• Additional add-ons
• Where to find in a production line?
• Additional Equipment
• Preferred Manufacturers
• Industries Use In
• Key Talking Points
• Summary

What is an Automatic L-Bar Sealer?

An automatic L-bar sealer is a packaging machine that seals and wraps products in a variety of materials, including shrink film, using a heated sealing bar that creates a seal around the product. The machine automatically feeds seals and cuts the film, making it a fast and efficient way to package products. It is called an L-bar sealer because the heated sealing bar has an “L” shape, which allows it to wrap around the product's edges, creating a secure seal.

Different types of seal bars

There are two categories of seal bars: hot wire seal bars and hot knife wire seal bars.

Hot Wire Seal Bar

This type of bar seal uses a heated wire to cut and join the surfaces of the film together with a molten edge bead, creating a precise and high-quality seal. The hot wire melts the edges of the film to form a strong bond that keeps the product securely wrapped during transportation and storage.

Hot Knife Seal Bar

Unlike the hot wire seal bar that cuts through the film, the hot knife seal bar melts the film to create a strong, continuous seal without any edges. This can be particularly useful when packaging products that require an airtight seal, as it helps to prevent any air from entering or escaping the package. Additionally, the hot knife seal bar can be covered with non-stick materials to prevent sticking to the hot tooling.

Options to add to the L-Bar Sealer

Perforated Roller

A perforated roller is an optional add-on for an L-Bar Sealer that allows air to vent out while the product is passing through the heat shrink tunnel. This helps prevent air bubbles from forming, which can cause the packaging to look unprofessional or even cause damage to the product inside. It is important to note that a specific type of film is needed to use this add-on and not all films are compatible with perforated rollers, so it is recommended to consult with a film expert before using one.

Selvage Rewinder

A selvage rewinder is another add-on component for an L-Bar Sealer that is designed to spool the excess film that is not used for the finished product. This rewinding process keeps the production area clean and organized and can also help reduce the amount of waste generated during the packaging process. The selvage rewinder can be located either internally or externally to the L-Bar Sealer, depending on the specific design of the machine.

Selvage rewinder to spool excess film that isn’t used for the finished product. These can be found externally or internally.

Additional Equipment

If you are considering purchasing an automatic L-Bar Sealer, you may also require certain upstream and downstream equipment to ensure a smooth production line. It's worth noting that the list provided below is not comprehensive and there may be additional equipment that could enhance your operation.

Contact us to discuss your requirements of Automatic l-Bar Sealer Shrink Wrapper. Our experienced sales team can help you identify the options that best suit your needs.

Upstream Equipment

• Infeed Conveyor 
• Friction Feeder
• Accumulation Table 
• Filler

Downstream Equipment

• Heat Tunnel 
• Coder
• Labeler
• Case Taper
• Palletizer
• Case Erector 
• Case Packer
• Stretch Wrapper

Favored Manufacturers

• Shanklin 
• Texwrap 
• Eastey 
• Beseler 
• PAC Machinery/Clamco
• Conflex

Industries Used In

• Games and Sporting Goods
• Printing and Paper Products
• Food
• Hardware and Houseware
• Electronics 
• Pharmaceuticals 

Questions to consider before buying or selling:

Buying:

• What’s the seal bar width and length?
• Is it a hot wire or a hot knife?
• Film width?
• Film type?
• Does it come with extra film or accessories?
• Is the heat tunnel included?
• Does it include a Selvage winder?
• Does it have a perforated roller?
• Does it have a closing conveyor?
• Are the flight lugs adjustable?

Selling:

• What’s the size of your customer’s product?
• What’s the production speed needed?

Summary

The L-bar sealer is an efficient piece of equipment for manufacturers looking for a fast yet cost-effective packaging solution. These machines use a seal bar shaped like an "L" to streamline the packaging process by sealing and forming the top of the next package. L-bar sealers create crisply wrapped packages and bundles for a variety of products, including irregularly shaped items, and can wrap a group of products together. 

Click here to view our inventory of automatic L-bar sealers.

If you’re interested in one of these units, contact our sales team to find the machine that’s best suited for you and your product.

Contact Us

In the world of packaging, efficiency and precision are key factors in ensuring products are properly sealed and protected. L-sealer machines have emerged as valuable tools in the packaging industry, offering a range of benefits and functionalities. As a leading manufacturer of packaging machinery, Clearpack Automation understands the significance of L-Sealer Machines in meeting the diverse needs of industries worldwide. In this blog, we delve into the intricacies of L-Sealer machines, exploring their features, benefits, and applications in packaging automation.

How Does an L-Sealer Machine Work?
L-Sealer machines work through a simple yet effective process. First, the product to be packaged is placed on the conveyor, and then it will automatically move towards the centrefold shrink film. The machine then automatically positions the product and moves the sealing bar into place. The sealing bar, typically in the shape of an “L,” presses against the film, creating a seal around the product. The excess film is trimmed off, resulting in a neat and professional-looking package. 

Advantages of L-Sealer Machines
⦁    Efficiency and Speed
⦁    Versatility
⦁    Cost-Effective
⦁    Product Protection
⦁    Machine Structure both MS Powder Coated & SS-304
⦁    Polyolefins & Low-density polyethylene (LDPE) films

Applications of L-Sealer Machines
Food and Beverage Industry:
L sealer machines find extensive use in the food and beverage industry. They are employed to package various products, including canned goods, bottled beverages, confectionery, snacks, frozen foods, and more. The machines ensure the products remain fresh, hygienic, and visually appealing.

Pharmaceuticals:
 L sealer machines play a crucial role in the pharmaceutical industry. They are used to package medicines, tablets, capsules, and medical devices securely. The airtight seal provided by these machines helps protect the products from contamination and extends their shelf life.

Cosmetics and Personal Care:
L sealer machines are utilized in the packaging of cosmetics and personal care products such as soaps, shampoos, lotions, and creams. These machines ensure the products are properly sealed, maintaining their quality and preventing leakage.

For more Automatic Shrink Wrapping Machine Manufacturersinformation, please contact us. We will provide professional answers.