Factors to consider when choosing a Heat Sealer

Factors to consider when choosing a Heat Sealer

When choosing a sealer, there are factors you have to consider first before settling on one. Knowing the thickness of the material you are going to handle will be the primary guide in your selection process. Getting the best sealer will ensure that the sealing process is reliable, convenient and easy. This article will give you an insight into the heat sealer and the main factors to consider when buying the sealing machine.

What is a heat sealer?

A heat sealer is a machine that uses heat to seal the products during packaging. There are different types of sealers available in the market and depending on your application; you can choose the one that best suits your preferences. Here are the main types of impulse sealers available based on the usage and the type of material:

  •    Hand sealer- this machine seals a plastic bag of up 10 mm thickness
  •    Foot sealer/pedestal- this machine can seal a bag of up to 15 mm
  •    Auto sealer- it also seals a bag of up to 15 mm
  •    Double impulse sealer –it has foot and automatic options. It can seal up to 20 mm thick bag
  •    Sealer w/cutter- this machines seals and trims excess material when making customized bags.

Factors to Consider when buying the heat sealer


The size of the sealing machine relies upon the width of the material to be sealed. However, it is recommended to get a machine that has an additional width so that the sealing process can be handling easier. A cutter on the sealing machine has been designed to trim at a less width than that of the sealer arm.


Portable sealers are usually lightweight, helpful and adaptable. The sizes of this machines are however limited. Hand sealers are the most basic and efficient unit of packing that is adjusted manually. A suitable heat sealer machine should be able to seal a large number of bags within a short time. Buying one in the market, you should first test and check the speed level. If you are packing a large number of products using this process, then you must go for the machine that best suits your level of application. Most commercial industries prefer the automatic machines due to its reliability and consistency in speed. Hand sealers can handle around 6-20 bundles every moment.

Automatic sealers give considerably speedier sealing than foot sealers and are perfect for high creation occupations. Programmed sealers are generally tabletop sealers whose jaws are actuated consequently by a dial-controlled timer. Programmed sealers include a pre-set time cycle to take into account a completely nonstop programmed task. Programmed sealers can likewise be utilized with a foot pedal for self-loader operations. Sizes are accessible from 12″ to 47,” and roughly 20-50 bundles can be sealed every moment.

The width of the packaging material

Heating components are mostly made of nickel-chromium and are designed for specific type of seals. There are two sorts of heating components, flat and round, that are commonly used in the sealing process.  Depending on the sealing machine, different thicknesses can be handled. You should always get a heat sealing machine that best suits the thickness of your packaging material.

Vacuum Packaging Guide

Vacuum is a modified form of atmosphere packaging that many companies have incorporated so far since inception. A vacuum maker machine removes atmospheric oxygen from the package that is getting sealed. After removal of oxygen from the vacuum bag, the product is then sealed off and ready to be distributed. Oxygen is usually the primary contaminant of the most products. Removal of the oxygen will increase the product’s shelf life among other benefits. This form of packaging can protect both non-consumer and consumable products. This sealing process is usually straightforward though it incorporates various steps.

History of Vacuum Sealing

The use of modified atmosphere packaging (MAP) dates back to an early 19th century, but most of its accounts got publicity after World War II. Before the World War II, this process of packing was utilized, the air in the latex bags was first removed before the sealing. After the end of WW II, the use of plastics became more popular and got commercialized. This period then opened the age of vacuum sealing.

Vacuum Packaging Requirements

In vacuum packing operations, the primary requirements are the vacuum sealer or the vacuum packaging machine and the bags for sealing. Also, equipment such as external air compressor is needed and more so the inert gas to be used.

Types of Vacuum Bags

The vacuum bags are used for packaging the products before the product is released to the customers. These bags vary in thickness, shape and the level of oxygen permeability. When choosing a vacuum bag, you should go for the one that is thick enough to keep the product safe. The most common thickness is 3 mm but the long products different thickness is used. Here are the common types of vacuum bags:

  •    Channeled vacuum bags

These types of bags have its sides embossed and are commonly used vacuum sealers at home. The embossed channel will allow air to escape from the bag with ease.

  •    Zippered Vacuum Bags

This type of bags are consumer friendly and has a re-closable zipper that allows any person to open without the need for scissors easily.

  •    Notched Vacuum Bags

This is another type of bag that any user can use at their homes as it has an easy opening platform.

  •    Foil Vacuum Bags

This is a common type of vacuum bag that is mostly used in coffee storage. The foil will keep the UV light away that might compromise the packaged product.

Types of Vacuum Sealers

For the smooth process of vacuum sealing, the right vacuum sealer should be incorporated. There are various vacuum sealers available in the market, and you should choose the one that is capable of sealing your products well within the shortest time. Below are the different types of vacuum sealers:

  •    Nozzle vacuum sealing

In this type of sealing, air is removed through the nozzle before the product is sealed.

  •    Chamber vacuum packing

This form of packing involves the use of heat seal closure to remove the atmospheric air containing oxygen from the vacuum bag.

  •    Vacuum skin packaging

Vacuum skin packaging involves removal of air using two roles of the film before it is sealed.

  •    Hot-fill vacuum packaging

In this form of packaging, a plastic bag is dipped into hot water to remove excess oxygen before it is sealed off.