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Inspection standards and requirements for wood products
1. Check appearance
- The front surface is flat, no bumps, no spikes.
- Other side smooth, uniform color, no color difference with the front, no impurities, foam printing.
- The color difference between the front and back batches of the same type of product shall not exceed 5%, and there shall be no adverse phenomena such as bare bottom, peeling, bubbles, flow hanging, hand bumps, orange peel, pitting, foam printing and impurities.
- No bruises and other defects, excessive edges and corners smooth, consistent thickness, no deformation.
The concave points of -3mm shall not exceed 3, and shall not be clustered within 10cm2; Convex points are not allowed.
2. Product size, thickness and weight test
Measure individual product size, product thickness, product weight, outer box size and gross box weight according to product specifications or sample provided by customer. If the customer does not provide detailed tolerance requirements, +/-3% tolerance should be used.
3. Static load test
Many furniture items need static load testing before shipping, such as tables, chairs, recliners, shelving, etc.
Test method: Load a certain amount of weight on the load-bearing parts of the product under test, such as the seat surface, backrest, armrest, etc., the product should not tip over, not crack, deformation and other phenomena, and the function will not be affected after the test.
4. Stability test
The bearing parts of wooden furniture also need to do stability test when inspecting goods, such as chair seat, backrest, sofa backrest.
Test method: Use a certain level of strength to pull the product, observe whether the dumping. (Different products, the weight of the object used, the distance and the strength of the cable vary.)
5. Shake test
Once the sample is assembled, it is placed horizontally on a flat plate without allowing the base to swing.
6. Smell test
The finished product shall have no unpleasant or irritating odor.
7. Barcode scanning test
Product labels and packaging labels can be scanned by the barcode scanner and the scan results are correct.
8. Impact test
Loads of a certain weight and size free fall to the bearing surface of the furniture at a specific height. After the test, the base is not allowed to have cracks or deformation, which will not affect the use.
9. Humidity test
Use a standard humidity tester to test the humidity of wooden parts.
Test method: Insert the moisture tester about 6mm deep along the grain (for non-contact devices, the tester should be close to the test surface) and read the results.
Requirements for wood moisture content: When wood moisture content changes greatly, uneven internal stress will occur inside the wood, and major defects such as deformation, warping and cracking will occur on the wood appearance. In general, the water content of solid wood in Jiangsu and Zhejiang areas shall be controlled according to the following standards: solid wood preparation section shall be controlled between 6 ~ 8, machining section and assembly section shall be controlled between 8 ~ 10, water content of plywood shall be controlled between 6 ~ 12, multi-layer plywood, particleboard and medium density fiberboard shall be controlled between 6 ~ 10. The humidity of general products should be controlled below 12.
1.Why do I need shipment inspections or factory audits?
In case of any Poor quality, incorrect shipments, unreal information from suppliers. Inspection is the most efficient way to protect buyer’s right.
Getting a rapid quotation should have a complete condition,such as gross weight size,quantity and where is the factory and where will it ship to."
Inspection standards and requirements for wood products
1. Check appearance
- The front surface is flat, no bumps, no spikes.
- Other side smooth, uniform color, no color difference with the front, no impurities, foam printing.
- The color difference between the front and back batches of the same type of product shall not exceed 5%, and there shall be no adverse phenomena such as bare bottom, peeling, bubbles, flow hanging, hand bumps, orange peel, pitting, foam printing and impurities.
- No bruises and other defects, excessive edges and corners smooth, consistent thickness, no deformation.
The concave points of -3mm shall not exceed 3, and shall not be clustered within 10cm2; Convex points are not allowed.
2. Product size, thickness and weight test
Measure individual product size, product thickness, product weight, outer box size and gross box weight according to product specifications or sample provided by customer. If the customer does not provide detailed tolerance requirements, +/-3% tolerance should be used.
3. Static load test
Many furniture items need static load testing before shipping, such as tables, chairs, recliners, shelving, etc.
Test method: Load a certain amount of weight on the load-bearing parts of the product under test, such as the seat surface, backrest, armrest, etc., the product should not tip over, not crack, deformation and other phenomena, and the function will not be affected after the test.
4. Stability test
The bearing parts of wooden furniture also need to do stability test when inspecting goods, such as chair seat, backrest, sofa backrest.
Test method: Use a certain level of strength to pull the product, observe whether the dumping. (Different products, the weight of the object used, the distance and the strength of the cable vary.)
5. Shake test
Once the sample is assembled, it is placed horizontally on a flat plate without allowing the base to swing.
6. Smell test
The finished product shall have no unpleasant or irritating odor.
7. Barcode scanning test
Product labels and packaging labels can be scanned by the barcode scanner and the scan results are correct.
8. Impact test
Loads of a certain weight and size free fall to the bearing surface of the furniture at a specific height. After the test, the base is not allowed to have cracks or deformation, which will not affect the use.
9. Humidity test
Use a standard humidity tester to test the humidity of wooden parts.
Test method: Insert the moisture tester about 6mm deep along the grain (for non-contact devices, the tester should be close to the test surface) and read the results.
Requirements for wood moisture content: When wood moisture content changes greatly, uneven internal stress will occur inside the wood, and major defects such as deformation, warping and cracking will occur on the wood appearance. In general, the water content of solid wood in Jiangsu and Zhejiang areas shall be controlled according to the following standards: solid wood preparation section shall be controlled between 6 ~ 8, machining section and assembly section shall be controlled between 8 ~ 10, water content of plywood shall be controlled between 6 ~ 12, multi-layer plywood, particleboard and medium density fiberboard shall be controlled between 6 ~ 10. The humidity of general products should be controlled below 12.
1.Why do I need shipment inspections or factory audits?
In case of any Poor quality, incorrect shipments, unreal information from suppliers. Inspection is the most efficient way to protect buyer’s right.
Getting a rapid quotation should have a complete condition,such as gross weight size,quantity and where is the factory and where will it ship to."
Package testing is mandated by regulations for some products such as; food, pharmaceuticals, medical devices, dangerous goods, etc. This may cover both the design qualification, periodic retesting, and control of the packaging processes. For unregulated products, testing may be required by a contract or governing specification. However, for most consumer goods, package testing is often a business decision involving risk management for factors such as:
• cost of packaging
• cost of package testing
• value of package contents
• value of good will in your market
• product liability exposure
• other potential costs of inadequate packaging
YONGSHUN staff would be happy to assess your specific product and packaging requirements to help you determine whether package testing can improve your quality deliverables.
Prop 65 is the 1986 voter-approved Safe Drinking Water & Toxic Enforcement Act that includes a list of Chemicals known to the State of California to cause cancer and/or reproductive toxicity. If a product contains a listed chemical, then the product must contain a “clear and reasonable” warning label informing consumers of the presence of the chemical and stating the chemical is known to cause cancer, birth defects, or other reproductive harm.
Although companies with fewer than 10 employees are exempt, if they sell a violative product to a retailer with more than 10 employees, the retailer could receive a notice of violation. In these circumstances, retailers usually rely on clauses within their contacts with importers that require the importer take responsibility for the violation.
A plaintiff may seek injunctive relief requiring a company caught selling a violative product to suspend sales, conduct a recall, or reformulate the product. Plaintiffs can also obtain penalties of up to $2,500 per violation per day. A more general California statute allows most successful plaintiffs to recover their attorneys’ fees as well.
Many are now choosing to rely on 3rd party testing companies to verify that hazardous substances are not being used in their products.
The type of quality control inspection you need largely depends on the quality goals you are trying to achieve, the relative importance of quality as it relates to your market, and whether there are any current production issues that need to be resolved.
We invite you to explore all the inspection types we provide by clicking here.
Or, you can contact us, and our staff can work with you to determine your exact requirements, and propose a custom solution to best meet your needs.
AQL is the acronym for Acceptable Quality Limit (or Level). This represents a statistical measurement of the maximum number and range of defects that is considered acceptable during a random sampling inspection of your goods. If the AQL is not achieved for a particular sampling of goods, you may accept shipment of the goods ‘as is’, demand a rework of the goods, renegotiate with you supplier, refuse the shipment, or choose another recourse based on your supplier agreement.
Defects found during a standard random inspection are sometimes classified into three levels: critical, major and minor. Critical defects are those that render the product unsafe or hazardous for the end user or that contravene mandatory regulations. Major defects can result in the product’s failure, reducing its marketability, usability or salability. Lastly, minor defects do not affect the product’s marketability or usability, but represent workmanship defects that make the product fall short of defined quality standards. Different companies maintain different interpretations of each defect type. Our staff can work with you to determine the AQL standard that meets your requirements according to the level of risk you are willing to assume. This becomes the primary reference during a pre-shipment inspection.
It is important to note; the AQL inspection is only a report on the findings at the time of the inspection. YONGSHUN, like all 3rd party QC companies, does not have the authority to make a decision as to whether your goods can be shipped. That is a decision only you can make in consultation with your supplier after reviewing the inspection report.