I type insulating bars for aluminum window and curtain

Energy-saving insulation bars are also called nylon strips. Its main function is to cut off the heat transfer and prevent the rapid or slow heat transfer.

There are two kinds of insulation strip packaging, one is straight strip packaging, and the other is coil strip packaging.

The heat insulation strip is different from the rubber strip in that it is made into a new composite material by mechanical rolling and cannot be replaced separately. The replacement can only be replaced by the entire profile.


  1. Broken bridge aluminum insulation bar reduces heat conduction 2.prevents condensation 3. Broken bridge aluminum insulation strip plays a role in heat preservation and energy saving 4. Broken bridge aluminum insulation strip reduces noise.
Material data
Item our strips
Density 1. 32g/cm3
DSC melt temperature 256°C
Testing for tensile cracks No crack at the orifice
D Shore hardness 81.2
Low temperature impact strength (unnotched) 92 kj/m2
Room temperature tensile strength (longitudinal) 91 Mpa
Room temperature elongation at break (longitudinal) 8.50%
Room temperature elasticity modulus (longitudinal) 4904 Mpa
Room temperature tensile strength (transverse) I shape (section depth< 20 mm) 111MPa
I shape (section depth ≥20 mm) 98MPa
Other Shape 40MPa
High temperature tensile strength (transverse)  shape (section depth < 20 mm) 60MPa
I shape (section depth ≥20 mm) 52MPa
Other Shape 32MPa
Low temperature tensile strength (transverse) I shape (section depth< 20 mm) 111MPa
I shape (section depth ≥20 mm) 98MPa
Other Shape 39MPa
Water resistance tensile strength (transverse) I shape (section depth< 20 mm) 93MPa
I shape (section depth ≥20 mm) 83MPa
Other Shape 38MPa
Aging resistance tensile strength (transverse) I shape (section depth< 20 mm) 99MPa
I shape (section depth ≥20 mm) 97MPa
Other Shape 28MPa
PS: You should check through the engineer if you choose non-I polyamide profiles
Storage of insulation strips
Insulating strips made of polyamide are initially dry but absorb moisture from the environment in the course of time after manufacture. The rate and level of moisture absorption depend on the following factors:
Ambient humidity
Ambient temperature
Storage period
In the summer months, when the temperature and relative humidity in warehouses are higher than usual, the insulating strips absorb more moisture than in the remaining seasons, even when stored properly for brief periods. During storage under dry conditions, the equilibrium moisture content is lower, approx. 2 %. Due to this moisture absorption the mechanical properties of the strips change.
We therefore recommend storing the profiles in a covered area with an ideal temperature range of 15 – 20 ° C
During extended storage periods, the strips change shape according to storage conditions. If the strips are stacked on pallets which are shorter than the strip length (e.g. 6,500 mm strips on 6,000 mm pallets), they sag at the ends. This applies to strips stored in pallets where there is no floor. The strips shouldn’t overlap the end of the supports on which they rest. The longer the storage period, the greater the possibility of the sag becoming permanent. A twisting of the strips, which can occur, for example, when individual bundles are removed from a pallet, can also become permanent if the strips are not straightened. For this reason, we recommend storing the strips so that the degree of sag is minimized in general. Make sure to support protruding sections and try to keep pre-processing storage periods as brief as possible in order to prevent the strips from twisting and sagging.



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