1. Use your eyes to see whether the surface of aluminum-plastic plate is smooth, and whether there are ripples, bubbles and scratches.
2. Use measuring tool to measure whether the thickness of aluminum-plastic plate meets the national production requirements-the inner wallboard is 3mm,
The thickness of aluminum must reach 0.5 mm when the outer wall panel is more than 4 mm.
3. Fold a corner of the aluminum-plastic board by hand to see if it is broken. The center of the easily broken board is made of inferior plastic mixed with slag;
The core that is not easy to break is made of PE material.
4. Burn the real PE material completely with the burnt plastic core; Incomplete combustion with impurities
Adulterated material
5. Use woodworking tools to plan the slot. When bending, check whether the front side is broken. The front is broken with inferior materials, but not broken.
It is made of PE material.
6. Chemical raw materials are used for identification, and butanone is used for identification of fluorocarbon coatings for exterior wall panels; Mark the inner wallboard coating with xylene, and deduct 5 points.
Wipe off the reagent after the clock to see if the bottom is exposed.
7. Ask for the manufacturer's quality inspection report, quality certificate and national quality certificate to see if it is produced by a regular manufacturer. Through these points, we can simply judge the advantages and disadvantages of aluminum-plastic plates. As the saying goes, "one point for quality, one point for goods", the price of high-quality aluminum-plastic plates will be much more expensive than that of inferior ones, and the quality is guaranteed. Aluminum-plastic plates should be purchased from regular manufacturers.