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

Semi-Tubular Films

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A semi-tubular film can be defined as a tube-shaped PE film that has been cut open on one side. Films made of LDPE, LLDPE, MDPE, or HDPE are extruded as tubular films and then further processed into semi-tubular variations or other products.

In addition to semi-tubular films, PE blanks and finished articles (i.e., bags and pockets of all kinds) can be made using additional manufacturing processes.

The manufacturing process by which semi-tubular film is produced is called extrusion. Here, PE granules are melted and blown under pressure to form a film tube – which is then cut open on one side. 

The semi-tubular film is supplied by Krus in rolls that fit into most common packaging machines. 

Ask us about special equipment for your semi-tubular film – we can protect the film against sunlight or even dye or print it. 

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Semi-Tubular Films

Technical Details

CategoryFilms
MaterialLDPE, HPDE, MDPE
TypesSleeve and/or overlaps, Half-sleeve, Tape
Widthfrom 60 mm to 2100 mm (LDPE), from 190 mm to 2100 mm (MDPE), from 220 mm to 970 mm (HDPE)
Thicknessfrom 13 μm to 200 μm (LDPE), from 13 μm to 200* μm (MDPE, HDPE)
ColorIn accordance with customer requirements
PrintFlexographic printing of up to 8 colors according to pantone
PropertiesThe strength of 15 μm LDPE is inferior to that of HDPE with the same thickness. LDPE is a more stretchable film compared to HDPE; it is more flexible and resistant to tearing. Both types of film have a high resistance to low temperatures, with HDPE performing better than LDPE in that regard.
AdditivesCan be manufactured with certain additives: - UV additive to protect the film from the effects of sunlight - antistatic additive to protect against discharges - slip-enhancing additive for easier packaging or opening - slip-reducing additive to allow easier stacking of products on pallets - additive to facilitate heat shrink (not applicable for HDPE and MDPE) - optional perforation - optional ionization: single-sided, double-sided or segmented - in case of a film intended for printing and lamination
UsageWide range of applications in packaging, food, medical and hygiene industries

Packing

  • 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

Logistics

  • 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

How Is Semi-tubular Film Different From Other Films?

The semi-tubular film has a slit. It is a folded flat film that can be used in many ways – for example, the furniture industry uses such films to protect chairs and other articles from dirt and dust. Semi-tubular films are also used in the food, textile, and pharmaceutical industries and are among the most widely used films made of PE.

The opening in the tube allows the film to be easily slid over the goods to be packaged. A protective wrapping for clothes, medicines, electronic goods, and furniture, the semi-tubular film is available in different qualities and can be designed according to your wishes.

In order for your project to succeed, you need to consider a few things when using semi-tubular film – we are happy to discuss them with you personally. Edge trim, core diameter, and other details must be taken into consideration during the packaging process. 

Trust our knowledgeable consultants and make an appointment to discuss your film needs!

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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What Material Is Used for the Production of a Semi-tubular Film?

LDPE (Low-Density Polyethylene) is the most commonly used material here. However, HDPE (high-density polyethylene), MDPE (medium-density polyethylene), and LLDPE (linear low-density polyethylene) can also be processed into semi-tubular films. The materials differ in gloss, thickness, and strength.

Contact us to get competent advice and learn which material is best suited for your purposes. Packaging is often exposed to strong mechanical challenges during transport. In order for your goods to reach the customer undamaged, they must be professionally packaged. 

Semi-tubular Film – Adapted to Your Needs 

The semi-tubular film is transparent unless it is colored on request. This allows your goods to be seen through the film, which is useful for warehousing and for the end consumer.

There are eight hues to choose from for coloring the semi-tubular film. The semi-tubular film can also have antistatic properties, resulting in pink color.

Of course, we can also print the semi-tubular film for you. The possibilities go far beyond article information and a logo – your imagination is the limit here.

You can also determine the width and strength of your film and how many meters should be on a roll.

Pure PE film can be used for food packaging because it is non-toxic and made for food use. The semi-tubular film can also be used for packing frozen goods, as it is suitable for cold temperatures.

An antistatic agent prevents the bags from sticking and is recommended if you want to use the films in a vending machine.

PE film is sensitive to sunlight. However, UV resistance can be achieved through additives in the granulate. Thus, your semi-tubular film should be safe from sunlight for a long time.


FAQ

No, semi-tubular films are non-toxic. They are excellent for food packaging, as they do not contain plasticizers.

Yes, a semi-tubular film is waterproof and very durable.

Polyethylene is softer than polypropylene. If you can scratch the material with your fingernail, it is PE and not PP.

Yes, it is possible. Semi-tubular films made of PE can be glued with special hot glue sticks as well as 2-component adhesives. 

Polyethylene (PE) is used In the field of film production. On the other hand, PVC (polyvinyl chloride) is mostly used in the non-food sectors. PVC is more resistant to acids, bases, oils, and alcohol. Semi-tubular films made of polyethylene are very suitable for use in food packaging.

Yes, PE can withstand low temperatures without damage.

No, semi-tubular polyethylene films are not UV resistant. Only PE film dyed black or PE film equipped with UV protection can withstand solar radiation. 

Yes, all PE materials are combustible.

Yes, PE film can be recycled back into a new PE product.

Films, bottles, bags, and other items made of polyethylene can be disposed of in yellow bags and yellow garbage bins.