Grading Rules

Plywood QC Inspection Checklist : Part 27 Testing method of plywood surface smoothness and flatness The testing method of plywood surface smoothness is very important. It is not only an aesthetic problem, but also has a great impact on the later use. We must take it seriously. 1. Prepare a …

Plywood QC Inspection Checklist : Part 26 Thin Plywood Flexibility testing and strength Test This is one simple way to test the thin plywood surface  and inside structural defects and flexibility ,also call diagonal Bending test ,also make the two 1220mm edges Parallel bending . Only for thin plywood below 6.0mm …

Plywood QC Inspection Checklist : Part 25 Test of Water Boiled Proof plywood When doing boiling experiments, we can simply make the following requirements: 1. Size of plywood samples 2. Time Recorder 3. tweezers 4. Water temperature thermometer 5. Boiling label or waterproof pen 6. Batch and order number of …

Plywood QC Inspection Checklist : Part 24 Differences among phenolic, melamine and urea-formaldehyde adhesives What is the difference between phenolic, melamine and urea-formaldehyde? Urea-formaldehyde adhesive is mainly made of urea and formaldehyde. Phenolic resin is a general term for the formation of resins by phenols and aldehydes under the action …

Plywood QC Inspection Checklist : Part 23 formaldehyde test types perforation extraction method, dryer method and climate box method * After reading this article, you can get: 1. The most comprehensive environmental protection level of popular science. 2. The strictest and safest formaldehyde standard. 3. The most practical suggestions of …

Plywood QC Inspection Checklist : Part 22 Formaldehyde Release Volume and Release Standard of Plywood With the arrival of the decoration season, we often hear such questions recently: “Are odorless materials environmentally friendly?” “The more colors the material has, the more harmful it is. What about colorless material?” When you …

Plywood QC Inspection Checklist : Part 21 How to identify the quality of plywood The quality of a plywood has a direct impact on its use and use value. Therefore, if we want to do a good job of checking the product quality, we must carry out according to the …

Plywood QC Inspection Checklist : Part 20 Quality Problems and Solutions in Plywood Production Process In the production process of any kind of product, there will be some quality problems. There are many and complex factors affecting product quality, including the quality of raw materials, inadequate precision of processing equipment, …

Plywood QC Inspection Checklist : Part 19 Defects and Solutions of Plywood in Hot Pressing Defects and Solutions of Plywood in Hot Pressing 1 Bubble and local glue deficiency Reasons for this: 1. The moisture content of veneer is too high or the drying is not uniform. 2. Excessive glue …

Plywood QC Inspection Checklist : Part 18 On-Site Management of Stabilizing Plywood Quality China is a big country in plywood production, but not a powerful country, mainly reflected in the current level of equipment and technology. The quality of plywood products is related to the raw and auxiliary materials such …