A very popular method of sealing a bag without a vacuum sealer is to use a heavy duty impulse sealer or hand held impulse sealer.
These alternatives are often more reliable for preventing contamination, and enable you to enjoy the same benefits to your products longevity.
Depending on the size of the bag air extraction can be done with something as simple as a household vacuum cleaner machine. However, the suitability of this approach very much depends on the nature of the project as these alternatives will obviously not give you the consistent, reliable, and hygienic reassurance that come with a professional vacuum seal.
