A conformable, very high bond acrylic foam tape which has added performance for bonding to plasticised vinyl due to aspecially formulated adhesive which resists plasticiser migration. In addition this core adhesive product well suited to many paints and primers.
Its improved conformability also allows more complete bond contact area when bonding rigid or irregular materials. The product has somewhat lower peel, tensile and shear performance than other VHB tape products due to its inherent softness.
4941's principal advantages are that it provides a more uniform seal on irregular surfaces, and invisible bonds under a transparent surface it offers a more aesthetically pleasing bond.
This product has been found to be particularly suitable for bonding wooden (primed), aluminium (anodised) and PVC Georgian glazing bars (muntin bars) to glazing units. The plasticiser resistant adhesive also allows for successful bonding of flexible PVC Glazing bars.The conformable nature of the acrylic foam core allows for good 'wetting out' of the adhesive to the glass surface thus providing good adhesive to surface contact. Also, good contact eliminates unsightly air bubbles. Primers might be appropriate when bonding such systems.
VHB 4941 tape has also been found excellent when bonding to relatively irregular surfaces such as grained wood. (Care must be taken to provide a good unified surface through priming.
WHAT DOES VHB TAPE STAND FOR?Very High Bond
WHAT IS 3M™ VHB™ TAPE USED FOR?
3M™ VHB™ tape is used to bond, seal and attach substrates including - metals, plastics and glass. VHB tapes are often used to replace mechanical fastening methods such as screws, rivets, welding etc. due to their high performance.
BEFORE SELECTING A VHB TAPE, WHAT FACTORS SHOULD YOU CONSIDER?
If you haven't previously used a VHB tape before for this specific application. You should consider the following before purchasing - what substrates are being bonded, the environment in which it will be used, the application, the temperature it will be in and weight of the load it needs to hold.
WHAT LOAD CAN VHB TAPE SUPPORT?
Typically, 25 sq. cm per 1Kg for non-critical indoor applications i.e. 10cm of 2.5cm wide tape per 1Kg of weight, and 60 sq. cm per 1Kg for outdoor and critical indoor applications i.e. 24cm of 2.5cm tape per 1Kg of weight.