Swift®lock 4790 is a polyurethane-based reactive hot melt adhesive designed for various applications. It boasts a short open time, rapid setting, and high initial strength. Upon curing, it achieves exceptional resistance to cold, heat, and humidity, accompanied by elevated mechanical properties. Approved under RAL 716 standards, it is particularly suitable for coating PVC window profiles with PVC foils. This product offers reliable performance and durability for your adhesive needs.

Product Type1K (1 component) Adhesive, Hot Melt Adhesive, Reactive Adhesive

Application AreaPanels, Profile Wrapping, Window Frames

Compatible Substrates & SurfacesAluminum, Composites, Metal, Polyvinyl Chloride (PVC), Wood

Chemical FamilyPolyurethanes (PU)

FeaturesExcellent Performance, Excellent Strength, Excellent Substrate Adhesion, Fast Setting, Good Strength, Heat Resistance, High Initial Strength, Humidity Resistant

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Chemical Family
Product Characteristics
  • After curing a high cold, heat and humidity resistance will be achieved
  • The cross-linked product has high mechanical properties

Features & Benefits

Labeling Claims
Advantages
  • Passes demanding RAL 716 requirements
  • High curing speed increases productivity and reduces Work in Progress
  • Very good performance on difficult to bond substrates
  • High initial strength enables lamination of stiff foils and narrow edges
  • Wide range of primers technologies available

Applications & Uses

Typical Applications
  • Swift®lock 4790 is an adhesive ideal for window profile wrapping (PVC and aluminum).
  • The Swift®prime range is applied to rigid PVC and aluminum profiles to improve adhesion and final bond performance.
Application Instructions
  • Application temperature: 120°C - 140°C
  • Open time: approx. 20 - 40 seconds, depending on temperature, amount and substrate.
  • Good results will be achieved if the following conditions are observed:
    • Room and material temperature: 18°C - 25°C
    • Moisture content of wood: 8 - 10%
    • Relative humidity: 40 - 70%
  • Because of the low application temperature, the thermal stress of heat sensitive materials is low. The physical and chemical curing is affected by the specific temperature of the PVC-profiles. The surfaces of the substrates must be clean, dry and free from oil and grease.
  • The temperature of the substrates must not be below +18°C during coating as lower temperatures deteriorate adhesion of glue and shorten open time. PVC and Alu-profiles should be heated to about 45°C - 55°C. After physical curing bonded parts are quickly ready for further processing.
  • PVC profiles must be pre-treated with primer. The adhesive can be applied by nozzle, roller and spray equipment. As a matter of principle, care has to be taken that melting and application equipment is protected against incoming moisture. This can be reached by applying dry nitrogen or dry air.
  • Final strength is achieved after 1 - 3 days depending on availability of moisture and temperature. Please care for exhaust of vapours occurring during application. Due to the variety and diversity of the market materials, it is necessary to do own tests for the use of this product.
  • Swift®prime 4956 FL can be used as primer for Swift®lock 4790.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Densityapprox. 1.10g/cm³
Viscosity (Brookfield, at 120°C, Sp29, 20 rpm)approx. 33,000mPa.s
Application Temperature120 - 140°C
Open Time20 - 40sec

Regulatory & Compliance

Regulatory Information

Swift®lock 4790 has been tested and approved in accordance with the Technical Appendix to RAL-GZ 716. It meets the requirements set out there with regard to bonding systems and may be used for the lamination of PVC window profiles.

Packaging & Availability

Regional Availability
  • Africa
  • Europe (Excluding Russia)
  • India
  • Middle East
  • North America

Storage & Handling

Shelf Life
9 Months
Storage Condition

In original sealed packaging, clean and dry conditions above -25°C and below +35°C. Sensitive to humidity.