0.1mm Thickness HDPE Cross Laminated Film
Description:
It is a high-strength multi-layer composite film,made of HDPE as
the base material,
Through multi-layer co-extrusion blow molding into embryos, and
then by multiple pull
Stretching, then rotary cutting into a film substrate with a
horizontal and vertical
distribution of 45 °, and finally through cross-laminated with an extruder with their
orientation directions crossed at 90 degrees.
The films are laminated together with a layer of polyethylene.
OUR THREE STEP PROCESS FOR MANUFACTURING HIGH STRENGTH,
DURABILITY, AND QUALITY PLASTIC FILMS IS THE KEY TO SUCCESS.
Step 1: Extrusion
► High density polyethylene resin (HDPE) is extruded via the blown
film process to form a tube. The tube is cooled and collapsed into
a flat tube.
► After the tube is flattened, it is fed into a multi stage
orienter. During orientation, the film is stretched in the machine
direction aligning the polyethylene molecules. The resulting film
is very strong in the machine direction.
► The oriented tube is then annealed and wound up. The annealing
step removes stress in the film and controls shrinkage. The
annealed film retains its high MD strength.
Step 2: Spiral Cutting
► The next step of the process is spiral cutting. In this step, the
flattened, oriented tube in unrolled, rotated and re-inflated to
form a round tube.
► As the film is fed forward and rotated, it is cut on a bias
(around 45 degrees) and wound up. The spiral cut film’s orientation
is at 45 degrees to the machine direction.
Step 3: Cross Lamination
► Finished spiral cut rolls are mounted on corresponding spindles.
► Films are fed through and laminated with an extruder with their
orientation directions crossed at 90 degrees. The films are
laminated together with a layer of polyethylene.
► After lamination, film is surface treated for ink adhesion and
graphic purposes. Finally, the film is wound on a core to estimated
yardage.
| Why Cross Laminated? |
| 1. Puncture Resistance: less accidental damage |
| 2. Thermal Dimensional Stability: No fish-mouthing or controlled
shrinkage |
| 3. Cold temperature resistant down to -30°C/-20°C |
| 4. Cross laminated film allows waterproofing membranes to bridge gaps
in sheathing and is resistant to damage from incidental movement
and settling of the roof |
| 5. UV Stability for typical job site exposure |
Parameter:
| NO. | Item | Performance |
| | SDM-30 | SDM-60 |
| 1 | Tensile Property | Tensile Strength/Mpa ≥ | 30 | 50 |
| | MaxF/(N/50mm) ≥ | 200 | 300 |
| | Elongation as MaxF/% ≥ | 200 |
| | Elongation at break/% ≥ | 250 |
| 2 | Sample number of no broken tested by free-falling dart method ≥ | 8 |
| 3 | Tear Strength(Nail Shank)/N ≥ | 60 |
| 4 | Angle Tear Strength/N ≥ | 25 |
| 5 | Thermal Stability | 120 ℃,10min, No bulb, No deformation |
| 6 | Cryogenic Flexibility ℃ | -35℃, No fissure, No delamination |
| 7 | Thermal Ageing | Appearance | No bulb, No deformation |
| | Subsequent MaxF/% ≥ | 80 |
| | Elongation at MaxF/% ≥ | 200 |
| | Elongation at break/% ≥ | 200 |
| 8 | Artificial Weathering | Appearance | No bulb, No deformation |
| | Subsequent MaxF/% ≥ | 70 |
| | Elongation at MaxF/% ≥ | 180 |
| | Elongation at break/% ≥ | 180 |
About US:
Upass, founded in 2008, now as a governing unit of China Building
Waterproof Association,
a vice chairman unit of Professional Committee of China Modified
Plastic Association,
an enterprise with Triple A credibility in China Plastic
Association, not only assists the
development of the relevant industries, but also upholds the
conception of sustainable
development by successive technological innovation. Upass so far
has acquired over
100 of intellectual property rights.
