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SERVICES
Tip 1
Three steps to a perfect result
Processing SIBU Design sheets is as easy as pie if the surface for adhesion is right and the correct methods are used for cutting and bonding. The following represents the three most important steps required for a perfect result:
1. The right surface
For self-adhesive SIBU Design sheets to stick properly, the surface for application must be non-absorbent and demonstrate surface tension of at least 38 dyn. This figure can be checked precisely using the test pen. In addition, the surface must be free of wax and silicon as these have a separating effect on the adhesive. Prior to bonding, the non-absorbent surface should always be cleaned with alcohol (ethanol or IPA). This removes any dust, grease or oil and raises the surface tension by 4-5 dyn.
If patterned sheets are to be used, care must be taken that no source of heat in excess of 122° F (radiator, spots) is in vicinity and that direct sunlight is also prevented. When used in wet rooms, some materials may not be subjected to the direct effects of moisture, e.g. water on cuts or edges, although steam is no problem.
Concave or convex surfaces make additional sheet anchorage necessary in the form of suitable profiles or edging trim. However, not all sheets are suitable for this particular application (e.g. punch-line 3D).
2. Correct preparation, cutting and working
If SIBU Design sheets are delivered in a rolled condition, they should be unpacked around 24 hours before bonding, laid out flat at room temperature and if necessary, weighed down. Warning! SIBU punch-line 3D sheets may not be rolled. The formation of condensation can be avoided if the sheets are acclimatised by being brought up to room temperature.
The protective film may only be removed from the sheets after the preparation process.
Cutting, drilling, punching and sawing of the design sheets must always be completed from the upper or patterned side. In the case of patterning on both sides, the instructions on the sheets are to be followed. Detailed information concerning the suitable tools is available from the applied technology specialist from SIBU Design. Please note! In cases of doubt, please request the technical information sheets from your local dealer.
3. Correct processing
The ideal processing temperature is +59° F - +86° F. The better the conditions during the bonding process, the better the adhesion. The effects of dust during bonding must be avoided!
Important! When subjected to an increase in temperature of 50° F, products made of thermoplastic material, such as SIBU sheets, expand by around 0.03” per each 39”. Therefore, it is essential that an expansion gap of 0.02”—0.08” be left between the individual sheets and the edging profiles. In the case of high ambient temperatures or marked temperature fluctuations, the expansion gap should be enlarged, or the dimensions of the sheet should be reduced.
Press down as hard as possible onto the ground using a rubber roller. The adhesive surface should not be touched during the removal of the protective film and the working process, as dirt has a very negative effect on the quality of a adhesion. If possible, the bonded sheets must be placed under stack pressure for 1-2 hours.
SIBUKLE D22 HV adhesive is suitable for the bonding of non-adhesive sheets onto absorbent surfaces. Should other adhesives be used, care must be taken that these are solvent-free. Please request our information sheet on this matter. These practical tips are the result of the latest know-how from our application technology department and replace all previous guidelines.
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