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  4. SikaForce®-420 L20
Find this product in your country
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Product Data Sheet
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
Product Data Sheet
PDF - 599 KB (en)
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
PRODUKTDATENBLATT
PDF - 597 KB (de)
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
PRODUCT DATA SHEET
PDF - 598 KB (en)
SikaForce®-420 L20
SikaForce®-420 L20
Karta Informacyjna Produktu (PDS)
Karta Informacyjna Produktu
PDF - 496 KB (pl)
SikaForce®-420 L20
SikaForce®-420 L20
Hoja Técnica
Hoja De Datos Del Producto
PDF - 449 KB (es)
PDS SikaForce®-420 L20
PDS SikaForce®-420 L20
Product Data Sheet (PDS)
SikaForce®-420 L20 is a high viscous 2-component polyurethane adhesive for assembling sandwich panels and similar constructions of various materials. SikaForce®-420 L20 is tested according to FTP Code system and approved according to the IMO Marine Equipment Directives.
PDF - 445 KB (en)
Show all documents

SikaForce®-420 L20

Non sagging assembly adhesive

SikaForce®-420 L20 is a high viscous 2-component polyurethane adhesive for assembling sandwich panels and similar constructions of various materials. SikaForce®-420 L20 is tested according to FTP Code system and approved according to the IMO Marine Equipment Directives.  

  • Non sagging
  • IMO approved
  • Good gap filling properties
  • Solvent free
 
Contact
Find this product in your country
Go
Product Data Sheet
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
Product Data Sheet
PDF - 599 KB (en)
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
PRODUKTDATENBLATT
PDF - 597 KB (de)
SikaForce®-420 L20
SikaForce®-420 L20
Product Data Sheet (PDS)
PRODUCT DATA SHEET
PDF - 598 KB (en)
SikaForce®-420 L20
SikaForce®-420 L20
Karta Informacyjna Produktu (PDS)
Karta Informacyjna Produktu
PDF - 496 KB (pl)
SikaForce®-420 L20
SikaForce®-420 L20
Hoja Técnica
Hoja De Datos Del Producto
PDF - 449 KB (es)
PDS SikaForce®-420 L20
PDS SikaForce®-420 L20
Product Data Sheet (PDS)
SikaForce®-420 L20 is a high viscous 2-component polyurethane adhesive for assembling sandwich panels and similar constructions of various materials. SikaForce®-420 L20 is tested according to FTP Code system and approved according to the IMO Marine Equipment Directives.
PDF - 445 KB (en)
Show all documents
  • Overview
  • Product Details
  • Application
  • Documents

PRODUCT BENEFITS

  • Non sagging
  • IMO approved
  • Good gap filling properties
  • Solvent free
 

Areas of Application

SikaForce®-420 L20 is used primarily for assembling of profiles and sandwich constructions of e.g. glass fiber reinforced plastic, wood, metal, ceramic materials and pre-treated plastic materials. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed, ensuring adhesion and material compatibility.  

Product Details

Typical Product Data
Properties

Component A

SikaForce®-420 L20

Component B

SikaForce®-010

Chemical base

Polyols

Isocyanate derivatives

Color (CQP001-1)

 

mixed

White

Brown

White

Cure mechanism

Polyaddition

Density (uncured)

 

mixed (calculated)

1.62 g/cm3

1.23 g/cm3

1.54 g/cm3

Solid content

100 %

100 %

Mixing ratio

by volume

by weight

100 : 25

100 : 19

Viscosity (CQP029-4)

Rheometer, PP25, shear rate 10 s-1, d=1 mm

mixed

85 000 mPa∙s A

300 mPa∙s A

40 000 mPa∙s A

Application temperature

15 – 30 °C

Pot-life (CQP536-3)

20 minutes A

Open time (CQP526-3)

30 minutes A

Press time (CQP590-4)

1 MPa

60 minutes A

Shore D hardness (CQP023-1 / ISO 48-4)

77 B

Tensile strength (CQP543-1 / ISO 527)

16 MPa B

Elongation at break (CQP543-1 / ISO 527)

15 % B

Tensile lap-shear strength (CQP546-1 / ISO 4587)

11 MPa B

Shelf life

12 months

9 months

CQP = Corporate Quality Procedure

A) 23 °C / 50 % r.h.

B) 12 weeks at 23 °C / 50 % r.h.

Technical Information

CURE MECHANISM

The curing of SikaForce®-420 L20 takes place by a chemical reaction of the two components. Higher temperatures speed up the curing process and lower slow it down.

CHEMICAL RESISTANCE

In case of chemical or thermal exposure, conduct project related testing.

Application

Application Information

Surface preparation

Surfaces must be clean, dry and free from grease, oil, dust and contaminants. After the cleaning process, a physical or chemical pre-treatment might be required, depending on surface and type of material. The type of pre-treatment must be determined by tests.

Application

Volume and positioning of the adhesive must be defined in a way, that the intended gap is sufficiently filled after joining the parts. The specific applied quantity and position must be determined by tests.
The procedure for manual application is as follows: Ensure that the A-component is stirred thoroughly to avoid any sediment or separation, taking care not to stir too vigorously as this may introduce air into the product. Add the B-component in the specified ratio and stir thoroughly, ensuring a homogeneous mixture is achieved.

Apply before reaching half of the pot-life and join parts together within the open time. Consider that, if mixed in larger amounts, the exothermic reaction can reduce the pot-life and open time significantly.
For automated applications, contact the System Engineering Department of Sika Industry.

 

Pressing

An adequate bonding pressure is necessary to obtain a voidless contact between the substrates and the adhesive. The specific pressure is, however, dependent on the core material and must be determined by tests. The pressure must always be below the maximum compressive strength of the core. After starting the press process, do not release the pressure until the press time has elapsed.

Removal

Uncured SikaForce®-420 L20 may be removed from tools and equipment with SikaForce®-096 Cleaner. Once cured, the material can only be removed mechanically.
Hands and exposed skin have to be washed immediately using hand wipes such as Sika® Cleaner-350H or a suitable industrial hand cleaner and water.

Do not use solvents on skin.

STORAGE CONDITIONS

SikaForce®-420 L20 has to be kept between 10 °C and 30 °C in a dry place. Do not expose it to direct sunlight or frost. After opening of the packaging, the content has to be protected against humidity.
The lowest allowed temperature during transportation is -20 °C for max. 7 days.

Documents

Product Flyer SikaForce-7720
Flyer or Leaflet PDF - 2 MB (en)
IMO Certificate MED-B AS, SikaForce®-420 L105, DNV
Certificates PDF - 273 KB (en)
Sika Adhesives and Sealants
Brochure PDF - 14 MB (en)

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