How to Package Hops, Hemp, and Cannabis

download hops pdf guide

Packaging hops and hemp for lasting freshness is best achieved with an opaque, high barrier package which has been removed of oxygen either through vacuum sealing or an oxygen absorber packet. The best storage system will vary depending on whether you are at the farming or brewing stage.

How to Select the Right Package
The “right” package will depend on factors such as how long you will be storing product, what volumes you are looking to store, and how the product will be handled next. Whether you are a farmer, craft brewer or a home brewer, you want to make sure your package blocks light and oxygen which are known to corrode your product. Most typically our hops and hemp customers are using Mylar Foil films with food-safe inner layers, but we also see clear vacuum bags being used, particularly by home brewers who are pre-portioning pelletized hops and hemp to freeze. Read on for recommendations specific to your stage and process.

Removing Oxygen
Preserving the freshness of your hops and hemp is about more than the proper bag selection. Your next step is creating a controlled low oxygen environment. For hops and hemp farmers at the initial packaging stage, we recommend a vacuum seal with a nitrogen flush. Later, once the bag has been opened by the craft brewer, we recommend a hand held sealer to close partially used bags. At this stage we also recommend an oxygen absorber to reduce oxygen levels for greater freshness. Home brewers looking for an inexpensive method often use home vacuum sealers in combination with textured channel bags, which they then freeze.

Guide For The
Hops and Hemp Farm
packaging for hops farm

Initial Packaging Considerations and Equipment Options

Guide For The
Craft Brewery
packaging for craft brewery

Reclosing bags of hops and hemp, solutions for maintaining freshness.

Guide For The
Home Brewer
packaging for home brewer

Simple options for home brewing, how to keep your stock fresh.

Why Does High Barrier Protection Matter?
Proper storage requires a controlled atmosphere. For over 20 years, IMPAK has provided customers with innovative packaging solutions, from flexible packaging products such as high barrier bags, to desiccants, oxygen absorbers, and sealing machinery. We know high barrier packaging and created the Hops and Hemp Green line after noticing an increasing number of our vacuum bags / Mylar bags were being used to package hops and hemp. Select from 3 convenient sizes at a cost-effective price point.

Misconceptions About Preserving Hops and Hemp
There is a lot of misinformation about food preservation and storing hops and hemp. Preserving hops and hemp comes down to the same principles as any other long term food storage: it’s all about the barrier, and keeping oxygen and other contaminates out. Whether you're packaging for a few days, or a few months, a controlled environment is critical to preserving freshness and flavor.

Vacuum sealed Mylar bags are the preferred choice for professionals, while home growers may opt for clear vacuum seal bags similar to FoodSaver® bags. IMPAK offers both. In addition to our Hops and Hemp Green Bags line, IMPAK offers a wide range of Mylar foil pouches in silver: see them here. We also offer clear vacuum bags see them here.

IMPAK does not claim to be experts on packaging hops and hemp. We leave that to professionals like Mark Garetz, author of Using Hops. *Using Hops was published in 1994, which means Mr. Garetz has been working with hops for at least as long as IMPAK has been working with high barrier packaging.

“Vacuum packing and inert-gas packaging in an oxygen-barrier material are the best packaging methods. The common type of oxygen-barrier packaging is the "boiling bag" which is clear and made from a lamination of two types of plastic… The next step up in effectiveness is the aluminized mylar bag (also known as the foil bag or pouch), which adds a layer of aluminum that increases the barrier protection more than 10-fold.” – Mark Garetz, Brewing Techniques

Need to keep your product at a stable relative humidity?

Shop the MoisturePak® Collection

The MoisturePak® is a two-way sorbent that uses a combination of plant fibers, water and salts to control the humidity by taking up or adsorbing the water vapor inside the container.

Hops Packaging for Hops and Hemp Farms

Ensuring that your crop maintains the same great flavor and smell comes down to proper bag selection and the removal of oxygen. There are several methods and equipment options but your basic goal is to package your product quickly in a low oxygen environment.

  • Initial Packaging: How to Select the Right Package
    A proper barrier against elements such as light and oxygen is the first step in maintaining product freshness. Typically hops and hemp farmers select a mutli-layer film composition with a food-safe inner layer. IMPAK’s PAKVF4C material takes this a step further with a sealant layer capable of sealing through the oils and powders that are typical in fresh hops and hemp packaging. Bags constructed of this material range in sizes for ounces to 11, 22 and 44 pounds, and larger.
  • Ensuring Product Freshness: How to Remove Oxygen
    Keeping hops and hemp fresh is a matter of removing oxygen. This can be achieved in 2 ways: vacuum sealing the bag after a nitrogen-flush; or sealing the bag with an oxygen absorber inside. For long term freshness you could combine all of the above, however most of our customers find that choosing one or the other is more than sufficient for the length of time they will be storing their product.
    Hops and hemp farmers generally prefer a nitrogen-flush vacuum seal over oxygen absorbers because of its immediacy and convenience. Oxygen absorbers are often called “oxygen scavengers” because they scavenge residual oxygen; with a nitrogen-flush and vacuum seal you are removing most of the residual oxygen almost immediately.
packaging hops infographic


electric vacuum sealer

EVS - Electric Vacuum Sealers

IMPAK's all-electric industrial vacuum sealers are outstanding units for medical and clean room use. Unlike air driven pneumatic sealing machines, The electric sealers have no need for an air compressor source. Since the sealers do not require an air compressor unit, these motor driven vacuum sealers will work more quietly than other pneumatic driven vacuum sealers on the market. This sealer gives a strong 5mm - almost .25 inch - seal from a frame that is built for either 17.7" or 13.8" wide pouches.
See our stock units here: Electric Vacuum Sealers.

PneuVak vacuum sealer

PVS - PneuVak Vacuum Sealers

The PneuVak sealers are pneumatic vacuum sealers capable of handling a wide range of materials, with added controls for gas flush and safety features such as an emergency stop. These vacuum sealers have a small foot print (as small as 27” x 11” x 12”) and require only a power source and air source.
See our stock units here: PneuVak Vacuum Sealers.


GVS - WorkHorse Vacuum Sealers

This tabletop vacuum sealer machine is made from high-grade stainless steel and quality anodized aluminum frame. It's good for medium to high production use. It comes with dual heat elements, PLC touch screen, single-ported exhaust, stainless steel frame, Venturi vacuum pump, and twin retractable nozzles as standard features.
Contact our team for custom units, and see our stock units here: WorkHorse Vacuum Sealers.

gramatech custom pak

Custom Pak - Stand-Mounted Vacuum Sealers

This vacuum sealer machine with mobile stand and separate control head is made from high-grade stainless steel and quality anodized aluminum frame body. This retractable vacuum sealer comes with dual heat elements, PLC touch screen, single-ported exhaust, stainless steel frame, Venturi vacuum pump, and double retractable nozzles as standard features.
See them here: Custom Pak Vacuum Sealers.

Large Barrier Bags

11lb pelletized hops bag

11 lb. Pelletized Hop Bag
(1 lb. fresh bale)
17.75" x 18.75" I.D.
click here to purchase

11lb pelletized hops bag

11 lb. Pelletized Hop Bag
(1 lb. fresh bale)
17.75" x 21.75" I.D.
click here to purchase

22lb pelletized hops bag

22 lb. Pelletized Hop Bag
(5 lb. fresh bale)
23" x 24" I.D.
click here to purchase

44lb pelletized hops bag

44 lb. Pelletized Hop Bag
(10 lb. fresh bale)
23" x 34.5" I.D.
click here to purchase

14 x 20 MylarFoil bag

14" x 20" O.D.
Part Number: 14MFS20
click here to purchase

18 x 23 MylarFoil bag

18" x 23" O.D.
Part Number: 18MFS23
click here to purchase

19.5 x 29 MylarFoil bag

19.5" x 29" O.D.
Part Number: 5G195MFS29
click here to purchase

large wicketed MylarFoil bag

14.75" x 22" x 5" O.D.
Part Number: CSUWP05Z
click here to purchase

The sustainable, economic packaging option for growers and brewers.

These multi-layered bags are light-resistant, oxygen resistant, and have a special layer that will seal through oils and powders, which makes them ideal for hops and hemp packaging. They are produced in an FDA-approved, food grade material (PAKVF4C 5.0) in forest green, and are sized for 11lb., 22lb., and 44lb. pelletized hops and hemp (1lb., 5lb., and 10lb. fresh bale).* A multi-layered Mylar foil bag is your best bet for long term food storage and our hops and hemp bags may be vacuum sealed, nitrogen flushed, and reused. IMPAK also offers a wide range of oxygen absorbers and sealing equipment to complete your hops and hemp packing process. *Other packaging solutions include our standard MylarFoil bags, or Boilable Bags

*Weight varies by hops and hemp form, contact IMPAK for samples to test your product.

Features & Advantages

  • Nitro-flush ready
  • Vacuum-seal ready
  • Puncture resistant, food-grade material (PAKVF4C - 5.0mil)
  • Superior barrier properties protect from light, oxygen, and moisture
  • 3 standard sizes (see our Mylar bags page for more unique sizes)
  • Sustainable & space saving for reduced shipping costs
  • Reusable/ resealable: may be sealed again and paired with an oxygen absorber when contents are not used in one setting
  • Material seals through oil & powders, without jeopardizing the heat seal (i.e. ketchup packets)
  • Ready to pair with our sealers and oxygen absorbers

Bulk Hops and Hemp Processing “Leaf” Bags – 37.5" x 51.0" Flat High Barrier Bags

37.5" x 51.0" Silver MylarFoil Leaf Bag

The same proprietary material used for IMPAK’s Green Hops and Hemp Bags is used on these large high barrier bags for bulk processing of whole-leaf hops and hemp, or even pellets.
Although the bags are silver, not green, they have the same sealing layer which is capable of sealing directly through powders and oils. They can also be opened by cutting a portion off and then resealed afterwards.
Interested in the unique barrier properties of this material? See the Spec Sheet here: PAKVF4C
P/N: 375VF4C51
Buy Here

Hops and Hemp Packaging for Craft Breweries

Typically, we see that our craft brewers receive their pelletized hops and hemp from their hops and hemp supplier and are more concerned with resealing opened bags while maintaining freshness, and possibly re-packaging their hops and hemp in different volumes. IMPAK has solutions for these different needs.

Watch on YouTube: "Portable Heat Sealer"

Resealing Hops and Hemp Bags

IMPAK offers several very simple solutions for resealing opened bags of hops and hemp. These range from bag clips that offer an air-tight seal without the need for a heat sealer, to hand held heat sealers such as our 6” HotJaw, or our more robust hand held sealers, the US-Made HHI-Series which are T-Clamp Sealers that come in the following lengths: 8”, 12”, 15”, 18”, and 26”. Another US-Made option is the similar portable sealer, the GXS-Series which are Scissor Sealers. See these options below, and read on for why IMPAK recommends pairing all of these options with an oxygen absorber.

bag clip for hops

Bag Clips
Available Sizes: 8.625" and 12.5"

HotJaw portable handheld sealer

HotJaw Portable Sealers
Available Sizes: 6"

US made handheld sealer

T-Clamp Sealers: HHI Series (US Made)
Available Sizes: 8", 12", 15", 18", 26"

US made scissor sealer

Scissor Sealers: GXS Series (US Made)
Available Sizes: 6" and 10"

Keeping Resealed Bags Fresh

Each time your bag is opened oxygen enters the bag and starts to deteriorate your product. To help fight the corrosive effects of oxygen, we recommend an oxygen absorber. This is a quick and efficient way to protect your product without slowing your process down. IMPAK has several oxygen absorber packet recommendations based on bag sizes below, but the appropriate size for you will depend on the frequency which you open your bag and the length of storage. We try and err on the side of over-protection.

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Re-Portioning Your Hops and Hemp into Smaller Bags

Many of our craft brewer customers repackage their hops and hemp into the exact volumes they use in their production batches. For this they use any number of our flat and stand up Mylar-foil bags. For 1 lb. pellet bags we have several recommendations below, but we suggest browsing our entire Mylar category for other sizes. It is worth noting that IMPAK offers samples of our bags so that customers can test capacity of their specific product. The suggestions below are estimates and we recommend testing before placing a bulk order.

Part Number 0425VF4C06GR

4.25" x 6.0" - Green MylarFoil Flat Pouch with Tear Notches (PN: 0425VF4C06GR)

8 x 10 Green MylarFoil Pouch

8.0" x 10.0" - Green MylarFoil Flat Pouch with Tear Notches (PN: 08P4C10GR)

Kraft MylarFoil Stand Up Pouch

6.0" x 9.37" x 3.25" - Kraft MylarFoil Stand Up Pouch with Zipper & Tear Notches (PN: CLK325Z)

Black MylarFoil Stand Up Pouch

6.0" x 9.37" x 3.25" - Black MylarFoil Stand Up Pouch with Zipper & Tear Notches (PN: CBB325Z)

10 x 16 silver hops bag

10.0" x 16.0" - Silver MylarFoil Flat Pouch (PN: 10VF4C16RC)

10 x 16 Green MylarFoil Pouch

10.0" x 16.0" - Green MylarFoil Flat Pouch (PN: 10VF4C16GRRC)

Hops and Hemp Packaging for Home Brewers

As the popularity of home brewing has steadily increased, we have seen the demand for packaging increase as well. Every home brewer seems to follow their own method, but we can share some of the common things we see. Most often we see home brewers repackaging their pellet hops and hemp into smaller portions which they vacuum seal in channel bags and then freeze.

IMPAK sells a wide range of pre-sized vacuum bags, as well as rolls that can be cut to size. One of our most in-demand sizes are our 4.0" x 6.0" vacuum bags which are used to package hops and hemp into 2oz portions. These bags are sold in a smaller case than our typical industrial quantities at just 100 bags. These bags are an excellent alternative to the cost and time of creating bags from FoodSaver rolls.

vacuum bags for hops pellets

Home Brewer Special: 2oz Pellet Hops Vacuum Bags - 100 Pack of 4" x 6" Bags

4" x 6" textured vacuum bag 100 Pack (100 bags), ideal for 2oz hops pellet samples for home brewing.
Label says 2-4oz. hops pellets but with most commercial hops pellets, these bags will fit a max of 3.5oz. Request samples to test.
*Please note: labels on bags are for photo purposes only, bags come unlabeled
P/N: SSV50406-100pk
Buy Here

Vacuum Bags for Freezing Hops and Hemp
Size (OD) Part Number Material Case Quantity
4" x 6" SSV50406 5 mil 1000
6" x 8" SSV50608 5 mil 1000
6" x 12" SSV4R0612 4 mil 1000
8" x 12" SSV4R0812 4 mil 500
10" x 14" CH1014 3.5 mil 300
10" x 14" SSV4R1014 4 mil 500
12" x 16" SS1216 3.5 mil 500
16" x 26" CH1626 4 mil 200

Vacuum Sealers for Channel Bags (like FoodSaver)

home vacuum sealer for hops

The CounterMate Vacuum Sealers are an ecomomic option for home brewers looking to vacuum seal their hops and hemp with professional results. They come in 5 models and range from $59.99 for the “Starter” series to $299.00 for the “Pro” series.

See them all here: CounterMate Vacuum Sealers

Interested in Learning More?

Custom Packaging

IMPAK produces custom printed pouches and packaging with an emphasis on materials with distinctive barrier properties to protect products from the adverse effects of moisture, oxygen, light and more. Learn about our unique custom capabilities.

How to Choose A High Barrier Bag

High barrier bags are used to preserve and protect products. When paired with an oxygen absorber or desiccant, products enjoy even greater shelf-life and stability. However, selecting the appropriate package is not always as straight forward as it seems.

Right Sealer for Your Setting

Not every Industrial Vacuum Sealer applies to every application. There are different models and types of Vacuum Sealers available, and each one of those sealers has different features that can affect the way a production line works.