Bag Sealers - Read Before Buying!
Bag sealers use heat to mend bag openings together to create a seal. Bag sealers are used for bags made from many different materials. Some common materials used with bag sealers are polyethylene, polypropylene, PVC, cellophane, and polyolefin. The type of bags being used helps to determine the right sealer. In this brief guide, we will detail the differences in a few bags sealers and explain how to determine the best type for your application.
Most bag sealers use a heated wire to mend and create a seal on the bag opening. Wire bag sealers are available with flat or round wire. Round wire sealers make a thinner seal and cut off the excess film after a seal has been made. Thinner material is best used with a round wire bag sealer because of the minimal seal thickness. Round wire bag sealers are an excellent option for shrink wrap bags and cellophane bags.
Flat wire bag sealers come in different seal thicknesses to effectively seal thicker bags. A thicker seal is needed for thicker bags containing heavier products. Flat wire sealers can range in thickness from 2mm to 12mm wide. An embossing tool is often used on thicker flat wire bag sealers for additional seal strength. The embossing tool uses texture on the seal seam for a better, stronger seal. Another popular flat wire sealing option is a double seal. Double seal bag sealers form two parallel seals to help further prevent bag leakage.
After determining the type of wire needed, machine pricing is most often determined by the size and desired efficiency. Larger machines that offer faster bag sealing cost more than smaller less efficient machines. Below are a few types of bags sealers to help determine the right option based on your application.
Impulse sealers are basic wire bag sealers available with a flat or round wire seal. Seal thicknesses can vary from 2mm to 5mm thick. Impulse sealers range in size from a 4-inch seal width up to 40 inches and more. Users set a seal timer on the sealer and a seal light turns off once the seal is complete. Most impulse sealers are recommended for sealing from 200 – 500 bags daily.
Foot Operated Bag Sealers
Foot operated sealers use a foot pedal to close the sealing bar for sealing. The ability to use a foot pedal allows users to have both hands free when making seals. Two free hands increase production levels and efficiency.
Foot operated bag sealers come in multiple designs. The two most common designs are tabletop sealers and upright sealers. One is designed for users to make seals sitting down and the other is for making seals standing up.
Foot operated sealers are available with flat or round wires. They are most commonly used with a flat wire to seal polyethylene bags. The sealing wires are available in thicknesses from 2mm to 10mm. The thicker 10mm sealing wires can seal up to an 8 mil bag thickness. Operators can seal more than 2,000 bags daily.
Continuous Bag Sealers
Continuous bag sealers use a continuous belt feed to efficiently seal products. Seals can be made as fast as bags can be placed on the infeed. Continuous sealers are only available with flat wire seals. Most have embossing wheels for stronger seal strength.
Continuous sealers come with an 8mm wide flat wire seal capable of sealing bags up to 8 mils thick. Operators can seal in excess of 5,000 bags daily with a continuous sealer.
Feel free to give us a call (1-800-441-5090) or send us an email if you have any additional questions in choosing the right type of bag sealer.