A Complete Guide to Accu Seal Heat Sealers for Packaging and Production

Introduction to Accu Seal Heat Sealers

Heat sealing is an essential process used in packaging and manufacturing to seal plastic packaging and other heat-sensitive materials. Accu Seal is a popular brand of impulse heat sealers that use a heating element to melt and fuse packaging together. In this comprehensive guide, we'll explore everything you need to know about Accu Seal heat sealers, including how they work, key features and benefits, and tips for getting the most out of these handy machines.

What is an Accu Seal Heat Sealer?

An Accu Seal heat sealer is a countertop impulse sealer that uses a heated element to seal a variety of plastic films and coated materials. It works by using pressure and short bursts of heat to melt two layers of film together to create an air-tight seal. Accu Seal sealers are designed for light duty packaging applications and are a cost-effective option for small businesses, crafters, and households.

These versatile machines can seal a range of poly bags, polyolefin bags, PET bags, poly tubing, and some foil laminates. They are easy to operate with user-friendly controls and come in a range of sizes from compact 12" models to wide 27" industrial sealers. Most Accu Seal units have adjustable temperature controls and seal time settings to handle different pouch thicknesses.

How Does an Accu Seal Heat Sealer Work?

Accu Seal heat sealers use a straightforward impulse sealing process. Here are the basic steps:

1. The operator inserts the open end of a plastic bag or pouch between the heated element and the rubber sealing pad.
2. When the handle is lowered, the heating element presses the two surfaces of the plastic together under pressure.
3. The element transfers heat through the plastic layers for a brief period, melting the inner surfaces and fusing them together.
4. After the preset seal time, the heating element retracts and the sealed pouch can be removed.

This creates a secure, leak-proof seal. The seal width is determined by the width of the heating element inside the unit, typically 1/8" or 1/4". The key to getting a good seal is using the correct temperature, pressure and seal time for the pouch material thickness.

Key Features of Accu Seal Heat Sealers

There are several useful features that make Accu Seal heat sealers versatile and easy to use, including:

• Adjustable Temperature Control - Lets you fine tune heat from around 150°F to 400°F to seal a variety of pouch thicknesses.
• Adjustable Seal Time - Varies the heating duration from 0 to 5 seconds for different pouch materials.
• Release Coated Heating Element - Non-stick coating prevents plastic sticking and build-up on the sealing bar.
• Hand Lever - Allows manual pressure control when clamping down on pouches.
• Safety Release Handles - Prevent overheating and fire hazards.
• Built-in Cutters - Trim pouches open after sealing on some models.

Higher-end Accu Seal models offer added functionality like digital displays, hands-free electric operation, wider seal bars and faster sealing times to boost productivity.

Main Benefits of Accu Seal Impulse Sealers

Here are some of the main reasons Accu Seal heat sealers are a popular choice for light duty sealing tasks:

• Affordable and Economical - Provide an entry-level sealing solution without a large upfront cost.
• Compact Size - Small countertop footprint takes up minimal space.
• User-Friendly - Straightforward manual operation with adjustable controls.
• Consistent Results - Deliver uniform, professional looking seals when settings are calibrated.
• Versatile - Ability to seal a wide range of poly bag styles and thicknesses.
• Portable - Lightweight construction makes them easy to move around.

For low volume sealing jobs, Accu Seal heat sealers provide an accessible and reliable sealing method without the expense of larger industrial sealers.

How to Use an Accu Seal Heat Sealer

While Accu Seal heat sealers are designed for easy use, following some best practices will help you get the best results when sealing pouches and bags. Here are some tips for success:

Select the Right Pouch Material

Accu Seal sealers work best with polyolefin bags and pouches, including polyethylene and polypropylene. The plastic must be heat-sensitive in order for sealing to occur. Pouches should be 3-6 mil thick for ideal results. Confirm the pouch material is compatible before purchasing supplies in bulk.

Set Proper Temperature and Time

Factors like pouch thickness, film type, and desired seal strength determine the right settings:

• 3 mil films - Use lower temps around 250°F to 270°F with 0.5-1 second seal time.
• 5 mil films - Use medium temps around 320°F to 340°F and 1.5-2 seconds seal time.
• Thicker pouches - Require higher heat around 370°F to 400°F and full 2-5 second seal duration.

Conduct test seals on sample pouches to dial in the optimal temperature and seal time before starting production.

Allow Heating Element to Warm Up

Let the unit preheat for several minutes before usage. This allows the sealing bar to reach stable operating temperature for consistency.

Insert Pouch Properly

Slide pouch between the jaws centered horizontally over the element. The open end should extend slightly above heating bar to ensure the entire seal area fuses together.

Apply Adequate Pressure

Clamp down with firm, even pressure to create a thin sealed seam. Insufficient pressure can lead to weak seals that leak or peel apart.

Allow Seal to Cool Before Handling

Let sealed pouches rest 10-20 seconds before removing to give the hot seal time to solidify. Premature handling can cause seals to separate.

Clean Heating Element Regularly

Build up of melted plastic on the Teflon coated sealing bar can impact sealing performance. Clean carefully with a non-abrasive pad.

With some practice and testing, you can master the sealing process for consistent, high quality seals every time.

Troubleshooting Tips for Accu Seal Heat Sealers

Accu Seal heat sealers are generally reliable, but occasional issues can arise. Here are some common problems and solutions to try:

Weak Seals

This results in seals that peel apart easily. Typical causes include:

• Insufficient temperature - Increase temperature setting in small increments.
• Inadequate seal time - Lengthen seal duration for stronger bonds.
• Low pressure - Clamp down with more force when sealing.
• Worn/damaged element - May need element replacement for even heat transfer.

Puckered Seals

Excessive heat causes wrinkles, ripples and puckers along the seal. To resolve:

• Lower temperature setting to avoid overheating film.
• Reduce seal time to limit heat exposure.
• Confirm pouch material matches sealer capabilities.

Sealer Not Reaching Set Temperature

If the machine won't reach the desired temp setting, potential fixes include:

• Allow full warm up time for element to heat thoroughly.
• Check for debris/buildup on sealing bar and clean if needed.
• Have technician inspect heating element and wiring for issues.
• Replace controller or heating element if defective.

One Side Not Sealing

An open seal on only one side of pouch indicates:

• Pouch not centered properly in sealer.
• Heating element requires cleaning.
• Warped or damaged element failing to make contact.

Carefully inspecting pouches, double checking settings, and maintaining the heating element can help minimize sealing problems with Accu Seal machines.

Conclusion

Accu Seal offers an affordable and easy-to-use solution for light duty heat sealing tasks. With user-friendly operation and adjustable settings, these compact sealers can create secure seals on poly bags and pouches to keep contents protected. Following proper setup, sealing, and maintenance procedures will help ensure reliable performance and consistent seals. Accu Seal heat sealers provide an indispensable sealing tool for packaging operations, manufacturing, crafts, and more.

FAQs

What types of plastic can I seal with an Accu Seal heat sealer?

Accu Seal sealers work best with polyolefin films like polyethylene and polypropylene. Other compatible materials include poly bags, poly tubing, and some foil laminates. Always test seal pouches first before sealing large quantities.

What thickness of plastic can these machines handle?

Accu Seal heat sealers can generally seal pouches between 2-6 mil thick. 3-5 mil pouches tend to produce the best seals. Thinner films may need lower heat settings.

How long will the seal last?

Seals produced by Accu Seal units are designed to be permanent when proper settings and procedures are used. Sealed pouches have an airtight, watertight closure that protects contents.

What maintenance is required?

Keep the Teflon coated heating element clean of buildup and debris. Wipe gently with a non-abrasive pad while cold. Also inspect wiring and components periodically. Follow all manufacturer maintenance tips.

What safety precautions should I take?

Use care when handling hot sealing bars. Allow seals to cool before handling. Unplug unit when not in use and follow electrical safety practices. Keep near a fire extinguisher in case of overheating.