Sealers

(282 products)

Bag Sealers have changed the way we package our products. Before they came along, bags were sealed with less integrity and strength. Heat Sealed products make a water proof and tamper proof seal. Bag Sealers also help to retain freshness and longevity of a product.

Constant Heat Sealers function just as they are named, Constant Heat is used to produce the seal. These machines are very easy to use. Most only require some basic assembly, if any at all. These machines are either table top, hand held or foot pedal operated. Most plug into 120v AC, but some can be converted to 220v. According to the manufacturer, Constant Heat Sealers are best suited for ALUMINUM Bags, CELLOPHANE and THICK MYLAR.

Impulse Heat Sealers differ from Constant Heat Sealers in that they do not stay constantly heated. The heating process occurs when you press the arm or foot pedal down (depending on the style machine you have). The heating time is quite quick and varies depending on your machine. These machines require little if any assembly. Impulse Heat Sealers plug into 120v AC, but some can be converted to 220v. According to the manufacturer, Impulse Heat Sealers are best suited for KEL-F, THIN MYLAR, POLYFLEX, P.V.A., POLYETHYLENE, POLYURETHANE, POLYVINYLCHLORIDE, POLYPROPYLENE, PLIOFILM, TIVAC, SARAN and most other heat sealable materials.

Please note that although these machines are usually called Bag Sealers they can seal a number of different plastic products. Contact the manufacturer or the distributor before purchasing to make sure that the type of plastic you wish to seal will work with the type of machine you wish to purchase.

Impulse vs. Constant Heat Sealers: Comparison and Buyer’s Guide

Choosing the right heat sealer depends on your packaging material, bag thickness, and daily production volume. Use this guide to compare impulse and constant heat sealers and select the best sealing machine for your business.

Which Heat Sealer Do You Need? (Quick Answer)

Select an Impulse Sealer if you process low-to-medium volumes of standard plastic bags (PE, PP) and need zero warm-up time. Choose a Constant Heat Sealer if you process high volumes, thick barrier materials (foil, Kraft paper, laminates), or heavy-duty gusseted pouches.

Feature Comparison: Impulse vs. Constant Heat Sealers

Compare key operational specifications to evaluate performance across both heat sealing technologies:

Performance Metric	Impulse Sealer	Constant Heat Sealer	Best Fit
Warm-Up Time	Instant (0 seconds)	5–10 minutes	Impulse Sealer
Energy Efficiency	High (Power used during cycle only)	Moderate (Continuous heat draw)	Impulse Sealer
Material Thickness	Light-to-medium (< 6 mil poly)	Heavy-duty (> 6 mil, laminates)	Constant Heat Sealer
Compatible Materials	PE, PP, Polyurethane, Nylon	Foil barrier, Kraft paper, Cellophane	Constant Heat Sealer
Production Volume	Intermittent to Medium (< 500/day)	Continuous High Volume (> 500/day)	Constant Heat Sealer
Safety & Handling	Cool to touch between seals	Bars remain continuously hot	Impulse Sealer

Types of Heat Sealers and Recommended Alternatives

Explore the specific styles available within each category to match your workspace and output demands:

Impulse Sealer Styles & Best Uses

Tabletop / Manual Impulse Sealers: Ideal for small businesses, retail shops, and low-volume poly bag packaging.
Foot Pedal Impulse Sealers: Hands-free operation that speeds up sealing for mid-sized production runs and medium-duty poly bags.
Automatic / Pneumatic Impulse Sealers: Programmable sealing cycles designed for consistent, hands-free production in semi-automated environments.

Constant Heat Sealer Styles & Best Uses

Direct Heat Jaw Sealers: Heavy-duty seals for thick foil pouches, coffee bags, Kraft paper, and medical packaging.
Continuous Band Sealers: High-speed conveyorized sealing for large assembly lines requiring non-stop bag sealing.
Portion/Handheld Constant Heat Pliers: Portable continuous sealers designed for bulky, irregularly shaped, or stationary barrier bags.

How to Choose the Right Sealer in 3 Steps

Step 1: Identify Your Bag Material

If sealing basic plastic films like Polyethylene (PE) or Polypropylene (PP), choose an impulse sealer. If sealing foil-lined, Kraft paper, or multi-layer barrier pouches, choose a constant heat sealer.
Step 2: Measure Material Thickness

Films under 6 mil respond well to impulse heat. Thicker films or multi-layer gusseted bags require the sustained thermal penetration of a constant heat bar.
Step 3: Evaluate Daily Production Volume

For under 500 bags per day, manual or foot-pedal impulse sealers provide cost-effective efficiency. For non-stop assembly lines over 500 bags per day, continuous band constant heat sealers are recommended.