紙護角的外觀檢測要求主要就是要求表面質(zhì)量及切割邊質(zhì)量等沒有明顯缺陷，印刷圖案清晰準(zhǔn)確。尺寸偏差測定主要檢測紙護角的場地、邊寬、厚度。翹曲度檢測指標(biāo)要求不得大于15mm/m。角度檢測指標(biāo)要求外角角度都在90°，而且偏差在±5°，異型紙護角可協(xié)商制定。紙護角的含水率要求應(yīng)該為14%,偏差范圍應(yīng)該在±4%。
The appearance inspection of paper corner guard mainly requires that there are no obvious defects in surface quality and cutting edge quality, and the printing pattern is clear and accurate. The size deviation measurement mainly detects the site, side width and thickness of paper corner guard. The warpage detection index shall not be greater than 15mm / m. The angle detection index requires that the external angle angle is 90 ° and the deviation is ± 5 ° and the angle guard of profiled paper can be formulated through negotiation. The moisture content of paper corner guard should be 14%, and the deviation range should be ± 4%.
一文讀懂紙護角檢測的相關(guān)知識
Read and understand the paper corner guard detection related knowledge
抗壓性能和抗彎性能可謂是紙護角質(zhì)量檢測中為關(guān)鍵的兩個性能?？箟盒阅苌现饕菣z測紙護角的縱向抗壓力，具體分級要求是根據(jù)紙護角的邊寬和厚度來規(guī)定的?？箯澬阅苤饕菣z測其抗彎力，也是以邊寬和厚度來分級的。值得注意的是BB/T 0023-2017只是規(guī)定了L型紙護角的抗壓性能和抗彎性能的分級要求。對于U型紙護角、異型紙護角的抗壓性能和抗彎性能，可由供需雙方自主協(xié)商制定。下面我們將兩個性能檢測試樣的方法為大家介紹一些。
Compression and bending properties are the two most important properties in the quality inspection of paper corner guards. In terms of compression performance, it mainly tests the longitudinal pressure resistance of paper corner guard, and the specific grading requirements are specified according to the edge width and thickness of paper corner guard. The bending performance is mainly to test the bending force, and it is also graded according to the side width and thickness. It should be noted that BB / T 0023-2017 only specifies the grading requirements for compression and bending properties of L-type paper corner guards. The compressive and bending properties of U-shaped paper corner guards and profiled paper corner protectors can be determined by the supplier and the demander through independent consultation. Next, we will introduce the methods of two performance test samples for you.
縱向抗壓試驗：從紙護角的任意部位截取試樣5根，試樣要求端面平整、無磨損，且與側(cè)面垂直。將試樣垂直放置于紙護角強度測定儀的兩壓板，動壓板以一定的速度對試樣施壓直壓潰，記錄壓潰時的抗壓大值。取5根試樣的平均值。
Longitudinal compression test: 5 samples are cut from any part of paper corner guard. The end face of the sample is required to be flat, free of abrasion and perpendicular to the side. Place the specimen vertically in the center of the two pressing plates of the paper corner guard strength tester. The dynamic pressing plate presses the sample at a certain speed until it collapses, and records the maximum compressive value during crushing. Take the average value of 5 samples.
抗彎試驗：從紙護角的任意部位截取試樣5根，將試樣放置在抗壓試驗支架上，中間用一個呈90°加載頭，加載頭放在試樣的中間部位。加載頭以一定的速度對試樣施壓，記錄壓潰時的大值。取5根試樣的平均值。
Bending test: five specimens are cut from any part of the paper corner guard, and the specimens are placed on the compression test bracket, and a 90 ° loading head is used in the middle of the specimen. The loading head presses the specimen at a certain speed and records the maximum value of crushing. Take the average value of 5 samples.
一文讀懂紙護角檢測的相關(guān)知識
Read and understand the paper corner guard detection related knowledge
總結(jié)來講，紙護角在包裝材料產(chǎn)品，屬于定位清晰的產(chǎn)品。對于包裝紙箱能夠形成很好的保護作用。尤其是在預(yù)防包裝運輸中外部損耗，增加紙箱的疊放壓力和強度，將包裝貨物打包成一個加固而穩(wěn)定的包裝整體，對其包裝物件的表面和邊角形成有效的防護等等方面，都有起著重要的作用。
In conclusion, the paper corner guard is a product with clear positioning in the packaging material products. For the packaging carton can form a good protective effect. In particular, it plays an important role in the prevention of external losses in packaging and transportation, increasing the stacking pressure and strength of cartons, packaging the packaged goods into a reinforced and stable package as a whole, and effectively protecting the surface and corners of the packaging objects.
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