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Kruś Sp z o.o. Sp K.
Kruś Sp z o.o. Sp K.

Poly Bags


Poly bags are transparent or colored pouches made of plastic film.

Also knowns as film bags, such products are made of polyethylene (PE) or polypropylene (PP), depending on the manufacturer.

Poly bags are used in various industries to protect goods such as food and textiles from dirt and environmental influences.

Poly or film bags are among the less expensive packaging materials.

At Krus, we offer a wide variety of poly bags and cater to your specifications and requirements.

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Poly Bags

Technical Details

Width70 mm – 1350 mm
ColoringIn accordance with customer requirements
PrintingFlexographic printing of up to 8 colors according to pantone
Finishknurled, pierced, needled, perforated
AdditivesAntistatic, UV stabilizer, antiblock, antifog
UsagePackaging industry, medical technology, construction industry, electrical industry, automotive industry, food industry, agriculture


  • We pack products according to client’s instructions
  • Foil or cardboard packaging
  • We cooperate with producers of cardboard packaging
  • We pack in own or customer material
  • We cooperate with packaging companies
  • We produce non-standard orders

Quality control

  • All products are checked and controlled at every stage of production
  • We have certificates and attestations for products intended for contact with food


  • We provide our own transport in the area of Poznań
  • We cooperate with transportation companies
  • We perform small-scape and full-pallet shipments

Private Label

  • We offer a whole range of our products in packaging under own brand
  • We adjust dimensions and methods of packaging to the individual needs of our clients
  • We produce collective packaging and labels for own brand of our clients

Advantages of Poly Bags 

Krus poly bags offer many advantages to customers. Our products are:

  • Versatile in use
  • Inexpensive to purchase
  • Able to provide precise packaging for small parts
  • Suitable for food
  • Reusable

Advantages of Bulk Purchasing

Contact us now and benefit from a price advantage for large purchase quantities. We are also happy to take care of warehousing and order picking for you.

Save Money With Individual Advice

Find out how you can save considerable costs by choosing the right film. Contact us today and receive the best offer for your product.

KRUS - Your Competent Partner for PE Films of All Kinds

Do not hesitate to contact us for more information about the different films and to find out which product is the right one for your project!

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Polybag Applications

Poly bags are a universal product, found in a wide variety of industries. At Krus, we have extensive expertise and numerous satisfied customers from a variety of different sectors. Poly bags are used in the following industries and sectors, among others:

  • Packaging industry
  • Medical technology
  • Construction industry
  • Electrical industry
  • Automotive industry
  • Food industry
  • Agriculture

Polybag Material

In general, poly bags are usually made of polyethylene (PE) or polypropylene (PP). At Krus, we have years of experience in the manufacturing of poly bags. The types of materials we offer are:

  • LDPE (Low-density Polyethylene)
  • COEX (Coextruded Film)
  • MDPE (Medium-density Polyethylene)
  • Regranulate

LDPE Poly Bags

Poly bags made of LDPE (Low-density Polyethylene) or PE-LD are the most common type of poly bags. LDPE is the oldest PE material in common use.

Films and bags made of LDPE are recyclable and often transparent. LDPE poly bags are the most cost-effective choice.

COEX Poly Bags

Poly bags made of COEX are manufactured from several layers of material. The layers are put on top of each other in extruders. The material types can be combined depending on the subsequent use.

During the extrusion process, the COEX film is produced on several slides at the same time, with each slide responsible for one or more layers. All films are then brought together and an apparently uniform film is produced.

COEX can be used to produce a wide variety of different film products, e.g., bags for potting soil. Inside such a pouch is a black film meant to protect the potting soil from UV rays. The white film on the outside usually includes the product information for the potting soil printed on it.

MDPE Poly Bags

Poly bags made of MDPE Medium-density Polyethylene) combine the advantages of LDPE (Low-density Polyethylene) and HDPE (High-density Polyethylene) films. MDPE is more durable than HDPE and is more usable (e.g., cuttable, better feel) than LDPE.

Regranulate Poly Bags

Poly bags made of regranulate are products made of recycled plastic granulate. The different granulates can be mixed together depending on the color and desired properties that our customers prefer. Films and bags made of regranulate have similar mechanical and thermal properties as products made from brand-new raw materials.

Shapes of Poly Bags

Poly bags can take different shapes during the manufacturing process, including:

  • Flat bags
  • Gusset bags
  • Drawstring closure bags
  • Flat bags with adhesive closure
  • Block bottom bags with side gussets

Poly Bag Additives

To give poly bags more helpful properties, different additives can be mixed in during the production of the bags. These additives help improve certain aspects of the finished products.

Poly Bag UV Stabilizer

Poly bags with the addition of UV stabilizers are most often used when the bags or films are exposed to direct sunlight for a long time. The mixed-in UV stabilizer protects the bag and the contents by converting the ultraviolet part of the light.

Poly Bag Antiblock

Poly bags with the addition of Antiblock are easier to roll up. During processing, organic or mineral additives are added to make the surface rougher, which prevents two layers of film from sticking together.


Poly bags are used in numerous industries for varying purposes. Below, you will find some of the most common fields of application for poly bag products:

  • Packaging material (to protect products)
  • Agriculture (to store potting soil or fodder)
  • Electrical industry (to protect components from electrostatic charge during shipping)
  • Food industry (to extend the shelf life of edible goods)

The size of a poly bag depends on the product the customer wants to pack. Poly bags can be manufactured to your desired size, from around 50mm up to about 1,350mm for large products. The size of the bag should be optimally matched to the dimensions of the product in order to minimize expenses.

To calculate the size of a polybag, you need to know the dimensions of your product. You also need to pay attention to the fact that a few millimeters need to be added to easily package the goods.

If you have any problems with calculating the size of the polybag, we can do it for you. Please contact us at any time during our business hours, and we will be happy to help you!

The quantity of poly bags depends on your own requirement. We will be happy to advise you on this.

Don’t worry if you don’t have a suitable place to warehouse your poly bags – we offer both storage and commissioning services. If you desire so, we can take care of storing and shipping the bags directly to your customers. Feel free to contact us if you need help with these.

The color of a poly bag depends on your wishes and requirements. You can choose between 8 different colors at Krus. Possible colors for poly bags include pink, blue, yellow, black, and white. Poly bags intended for food storage are mostly transparent.

The finish of a poly bag influences the surface texture of the bag. At Krus, we can offer poly bags in the following finishes:

  • Knurled
  • Punched
  • Needled
  • Perforated

The reusability of poly bags is largely dependent on the type of material you choose.

Yes, poly bags can be placed in the yellow bag or yellow garbage can, depending on the region you operate in. After separation, poly bags can be used as a base material for manufacturing of other types of film.

The Pantone color system is an internationally recognized system for coding colors. It was developed by the American company Pantone LLC and is considered a standard in the printing and design industry.