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Adtech 956 Two Component Polyurethane Adhesive

Adtech 956® is a non-carcinogenic  two component polyurethane based adhesive which can be used for bonding a wide variety of substrates.  It is ideal for bonding corner joints in aluminium door and window construction (suitable for classic and injection bonding methods

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Adtech® 956 is a structural, force-locking adhesive for bonding the most varying material combinations, e.g. in the field of vehicle body manufacture.

Adtech® 956 can also be used for the bonding of Alu, HPL, GRP and other materials.


  • 900g twin pack cartridge

Featured Properties

  • Tough-hard adhesive joint
  • Solvent free
  • Thixotropic
  • Good weather resistance
  • UV colour retention
  • Can be overpainted with many paints
  • Can be powder coated

Nozzle required

multiiiimix MX13 Mixer Nozzle


Acclimatise the product before the application.  The surfaces of the workpieces to be bonded must be dry, and free from dust and grease.  Depending on the material surface, check if the bonding result can be improved by grinding or applying of primer.  Polyolefins (among others PE, PP) cannot be bonded without preparation, e.g. plasma- or corona treatment. If PS-hard surfaces are bonded, generally we recommend using a primer.

Reactivity and dosing behaviour are considerably influenced by the material temperature; under warm conditions, masses become faster and can be dosed significantly faster. At low temperatures <+7 °C, homogeneously heat the cartridges up to max. +35 °C. The static mixing tube is screwed onto the open cartridge and the cartridge is inserted in the dosing gun.  Avoid overloading of the tandem cartridge doe to too high forces >3.6 kN.   Depending on the type or brand of the air pressure gun, and when applying higher operating pressure, the cartridges can be damaged or become leaky due to the different forces caused by the pneumatic cylinders of the guns at usual application temperatures. For this reason, possibly the correct mixing ratios of the adhesive systems cannot be obtained; for instance Sulzer TS493X (Krøger), Schu¨ co 296 704 allow max. 7.0 bar (max. 3.6 kN).  The first approx. 20g of the mixed adhesive (approx. walnut size) are not used for bonding for safety reasons (cartridge filling method)!

Within the processing time, apply the mixed adhesive directly from the static mixer into the profile or onto the surface to be bonded and fit the parts together.
After they have been fit together, the parts must be fixed and pressed until functional strength has been reached.

Hard pointing: the mixed adhesive is applied directly from the static mixer onto the pre-cleaned surface and screeded/smoothed within the processing time.
Remove oozing adhesive when it is fresh.  In case of short interruptions of work, within the processing time, if dosed once more, new, fresh adhesive is filled in the static mixer. In this way, one static mixer can be used for a whole work day.  After work stoppages, make sure to change the static mixer within the specified time.

After the end of work, the used static mixer remains on the cartridge unit; if work starts again, the static mixer is to be replaced. If necessary, remove hardened adhesive from the cartridge nozzle. Now the safety shot, approx. 20g of adhesive, is required, before bonding can be continued!

Bonding of aluminium, copper, brass: only on chemically pretreated or varnished surfaces; these materials cannot be durably bonded to be age-resistant without appropriate pre-treatment of the surfaces to be glued.

Due to the difficult definition of aluminium surfaces and qualities, we generally recommend gathering sufficient information from the supplier to prepare the planned bonding process optimally; sufficient qualification tests are required.

Due to their variety, age and, if necessary, additional treatment with oil or wax, anodized surfaces do not allow any general statement about wettability or bonding characteristics of these bonding surfaces.

If stainless steel is manufactured or processed, auxiliary aids, e.g. wax, oil, etc, are often used, that usually cannot be removed by simple wiping away; it turned out that after the cleaning with solvent-based cleaning agents a clearly better bonding result will be achieved after grinding, or better sand blasting, of the surface and following cleaning with solvent.

Handling and Storage

Consult Safety Data Sheet prior to use.

Adtech® 956 should be stored in the original cartridges in a cool, dry place, at a temperature range of between 15°C and 25°C with no direct sun radiation. In these conditions it has a storage life of at least 12 months.  

Remove the fresh, not cured adhesive from the surfaces and the tools.  Cured adhesive can only be removed mechanically.

During transportation the Adtech® 956 may not be exposed to temperatures of -30 °C or +35 °C.


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Adtech® 956 Polyurethane Adhesive Technical Data Sheet




Adtech® 956 Part A Polyurethane Adhesive Safety Data Sheet




Adtech® 956 Part B Polyurethane Adhesive Safety Data Sheet



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