Instructions / Assembly

7 | P a g e
Usage and Fabricaon Guidelines
WELDING There are several methods for welding plascs. The most common are bu welding and
hot air welding or gas welding. Note that welds on expanded PVC foam are usually not
as strong as those of solid PVC
Bu Welding Bu welding is recommended for gauges 4mm and over. This method allows fusion by
simply joining two ends together under pressure aer ends have been heated to an
opmum bonding state. This pressure must be maintained unl the material is
completely cooled. (see illustraon 6)
Hot Air Welding Hot air welding is accomplished with the use of a hot air gun and a welding rod. (see
illustraon 7) The temperature can be regulated and this method allows great flexibility.
Rods made of Type I PVC are preferre d, but Type II can also work well. Welding is
accomplished by feeding the rod through the gun and applying pressure on the rod as
the sheet and rod are heated simultaneously.
For best results, the temperature of the air at the p of the rod should be 68 0 degrees F.
Welding pressure should be approximately 2 to 3lbs. depending on rod diameter. Under
opmum condions, welding 10 to 18 inches per minute can be accomplished.
INSTALLATION Foam PVC is a low-density material that can be compressed relavely easily. When
securing the material in place, make sure the clamping force is spread evenly over a
large area.
All extruded products have grain determined by the direcon of the extrusion which is
the length of the sheet. The grain direcon offers greater flexural strength when
compared to the cross grain direcon. Because of this characterisc, make sure the
grain direcon is parallel to the floor when making flag-type signs.
Note:
Most thermoplascs tend to become hard and brile in cold temperatures just as
exposure to wide variaons in temperature and outdoor direct installaon to concrete or
metal surfaces may cause deflecon. Please read the following instrucons carefully.
Illustraon 6:
Illustraon 7:
↑
Heang Element
Bu Welding
Heat Gun
Welding rod
↘
Hot Air/Gas Welding