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Inspection standard of pearl cotton

Number of hits: Updated at: 04:04 / 14:04 jsjias.com close Sharing:
Most of the time, we will buy a large box of things, but we are worried that the contents inside will be smashed. What should we do at this time, that is, using pearl cotton as a kind of packaging, so that the contents inside will not be broken. However, everything that is produced has its own inspection standards, so what are its inspection standards? Please be sure to strictly inspect according to the above requirements.
1、 Surface
The surface of pearl cotton should be basically flat without tearing, damage, shrinkage cavity and serious pollution, and deformation that does not affect the use is allowed. It is allowed to use the required thickness of multilayer sheet, but the foaming quality of each composite layer should be basically the same, and the bubble size has no obvious difference.
2、 Appearance
The appearance color is divided into white, blue, black, red, etc. the specific requirements shall be in accordance with the customer's corresponding drawings. The color difference of the same batch of products is not allowed, and shall meet the requirements of sealed sample. The use of recycled materials will affect the physical properties of the products, such as compressive strength and creep resistance. At the same time, it will affect the color sense of the products and make the products dull and gray.
3、 Adhesion
The connection between EPE pearl cotton, EVA and paper corner guard, corrugated board and composite paperboard shall be bonded by hot melt adhesive. The hot melt adhesive shall be pure, and blackening is not allowed. Bonding requirements are firm, reliable, reliable judgment to the place where there is adhesive tear with the paper as the test standard.
4、 Material properties
When the material density is 30kg / m3 ± 10%, the surface hardness is 18 °± 1%; when the material density is 20kg / m3 ± 10%, the surface hardness should be 10 °± 1 °. When the material density is not indicated, the default value is 20kg / m3 ± 10%, and the surface hardness is 10 °± 1 °. The color of the antistatic EPE pearl cotton buffer material is pink, and the surface and volume resistivity ranges from 105 to 1011 ohms / m2. The friction voltage should be less than 100V.
5、 Smell
1. Take 100 mm and 20 mm samples at room temperature and smell the samples directly at room temperature. The material is allowed to have slight butane smell, but no strong smell or other peculiar smell is allowed.
2. Take the sample of 100 mm and 20 mm at high temperature and place it in the constant temperature box at 60 ℃± 3 ℃ for 2 h. take it out and smell it immediately to check whether there is obvious bad smell.
As many users are very concerned about the quality of pearl cotton, so manufacturers often set different standards according to different situations. However, the quality must be passed and the inspection must be passed when producing it. Poor quality products will inevitably bring negative effects, so no matter what, we must carry out inspection according to the inspection standards.
Editor: Jane
Company address
Zibo Economic Development Zone, Shandong Province

Contact person: manager Liu mobile phone: 13589525395
Tel: 0533-6502959 Fax: 0533-6502959

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