Instructions / Assembly
Table Of Contents
7 | P a g e
Usage and Fabricaon Guidelines
WELDING There are several methods for welding plascs. 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 aer ends have been heated to an
opmum bonding state. This pressure must be maintained unl the material is
completely cooled. (see illustraon 6)
Hot Air Welding Hot air welding is accomplished with the use of a hot air gun and a welding rod. (see
illustraon 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
opmum condions, welding 10 to 18 inches per minute can be accomplished.
INSTALLATION Foam PVC is a low-density material that can be compressed relavely 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 direcon of the extrusion which is
the length of the sheet. The grain direcon offers greater flexural strength when
compared to the cross grain direcon. Because of this characterisc, make sure the
grain direcon is parallel to the floor when making flag-type signs.
Note:
Most thermoplascs tend to become hard and brile in cold temperatures just as
exposure to wide variaons in temperature and outdoor direct installaon to concrete or
metal surfaces may cause deflecon. Please read the following instrucons carefully.
Illustraon 6:
Illustraon 7:
↑
Heang Element
Bu Welding
Heat Gun
Welding rod
↘
Hot Air/Gas Welding