1.Q: The core of the large core board is glued or not glued, because the cost of the large core board made by the two processing methods is different, and the lateral static bending strength is also different. Usually, the price of the rubber board is obviously higher than that. The rubber sheet has a lateral static bending strength higher than that of the non-adhesive panel.
2. Look: The high-quality core board should be flat, smooth, non-deformable and free of defects. The thickness of the core should be uniform from the side and there is no overlap. The appropriate part of each large core board shall indicate the type, grade, formaldehyde emission level mark, factory name, inspector code, etc. of the product.
3. Listen: Set the large core board on the ground and tap on different parts by hand or other pure instruments. If the sound is very different, it indicates that there is a certain quality problem; if the sound is very uniform, the quality is acceptable.
4. Touch: Touch the surface of the large core board with your hand. The high quality should be dry and smooth, if it feels wet or has obvious waves, it indicates that there are certain problems.
5. Bubble: Saw a sample of 75 mm × 75 mm and immerse it in water of about 60 degrees for about 3 hours to observe whether the boards are delaminated. Layering indicates that the gluing performance may be problematic.
6. Amount: The gauge measures the thickness of the large core board to see if it is the size you need to purchase.
7. Smell: Use a nostril close to the plate to smell it. If there is obvious irritating smell or uncomfortable eyes, it indicates that the formaldehyde emission may exceed the standard.
8. Saw: When the condition is met, the board can be sawed vertically and horizontally. The quality of the core is observed from the side and the end surface, and there are defects such as decay, ribs, cracks, cracks and dead knots that affect the strength.
9. Check: Check whether the purchased products are produced by regular manufacturers. The verification contents include: whether there is a certificate of conformity, whether the after-sales service is standardized, whether the various types of marks are complete, whether there is a test report that proves the product is qualified, and the approval certificate issued by the relevant department. .
10. Price: Consumers should not be cheap when purchasing products, and should focus on quality.
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