Rakoll® 4655

Identification

Chemical Family

Polyurethanes (PU)

GBU

BAS

RTU Product Type

Hot Melt Adhesive,

Reactive Adhesive

Categories

Markets → Adhesives & Sealants → Applications → Industrial & Assembly Adhesives

Markets → Building & Construction → Applications → Building Materials → Wood

Markets → Building & Construction → Applications → Decorative Materials & Finishes → Wallcoverings & Decorative Laminates

Markets → Consumer Goods → Applications → Furniture

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Hot Melt Reactive Adhesives

Application Information

Cure Method

Moisture Cure

Applications

Application Area

Decorative Surfaces,

Furniture,

Woodwork,

Flat Lamination,

Profile Wrapping,

Wood Profile Wrapping,

Nonwoven,

Rigid Foam,

Industrial Composites

Application Method

Roller,

Nozzle

Compatible Substrates & Surfaces

Leather,

Metal,

Paper,

Plastics,

Wood,

Composites,

Cotton,

Acrylonitrile Butadiene Styrene (ABS),

Polyvinyl Chloride (PVC),

Foils

Applications & Uses

Product Applications

• Lower temperatures than recommended can cause higher viscosity which result in reduced bond strength and reduced wetting.
• Depending on the construction of the equipment, a continuous heating above processing temperature can cause decomposition of the adhesive.
• Tank melters should use pro- tective gases with < 5 ppm humidity, only.
• Rakoll 4655 is moisture sensitive, therefore container must be kept closed.
• Once cured, the material can only be removed mechanically
• Appropriate cleaners are listed in the product properties table.

Features

Ready-to-Use Product Features

Fast Setting,

Good Adhesion,

Good Bonding Strength,

Good Solvent Resistance,

Good Thermal Stability,

High Strength,

Highly Versatile,

Short Open Time,

Clean Running

Features & Benefits

Labeling Claims

Sustainable

Packaging & Availability

Regional Availability

• Europe
• India/MiddleEast/Africa (IMEA)

Physical Properties

Physical Form

Solid

Properties

Product Properties

Surface Requirements

• Dry
• Clean
• Free of grease
• Free of dust
• Free of oil

Typical Properties

	Value	Units	Test Method / Conditions
Application Temperature	130 -150	°C	-

Technical Data

	Value	Units	Test Method / Conditions
Ambient Temperature	18 - 25	°C	-
Density	1.1	g/cm³	-
Processing Temperature	120 - 150	°C	-
Relative Humidity	40 - 60	%	-
Softening Point	67	°C	Ring+Ball
Storage Temperature	- 25 to 35	°C	-
Substrate Temperature	18 - 25	°C	-
Typical Curing Time (23°C, 50 % RH)	3 - 4	d	-
Viscosity (Anton Paar, 130 C, cone-plate)	22000	mPa·s	-

Storage & Handling

Storage Condition

Rakoll 4655 should be used within the shelf life specified on the packaging. The storage stability ap- plies to material stored under appropriate conditions only (original unopened containers, recommended storage temperature).

Shelf Life

9 months