{"id":4139,"date":"2026-06-09T09:35:18","date_gmt":"2026-06-09T09:35:18","guid":{"rendered":"https:\/\/heleyadhesive.com\/?p=4139"},"modified":"2026-06-09T09:35:18","modified_gmt":"2026-06-09T09:35:18","slug":"shoe-adhesive-peel-strength","status":"publish","type":"post","link":"https:\/\/heleyadhesive.com\/es\/shoe-adhesive-peel-strength\/","title":{"rendered":"4 Key Shoe Adhesive Peel Strength Standards"},"content":{"rendered":"

Shoe adhesive peel strength<\/strong> is one of the most important tests in footwear production. When a shoe sole opens, many people think the glue is bad. But in real production, the problem may also come from poor surface treatment, wrong drying time, low heat activation, or weak pressing pressure.<\/p>\n

For shoe factories, peel strength is not just a lab number. It affects product quality, customer complaints, return rate, and brand trust.<\/p>\n

So, what is the standard for peel strength in shoe adhesives?<\/p>\n

The simple answer is: there is no single value for every shoe.<\/strong> The test method can be standard, but the passing value depends on shoe type, material, buyer requirement, and real wearing condition.<\/p>\n

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1.What Is Shoe Adhesive Peel Strength?<\/h2>\n

Shoe adhesive peel strength<\/strong> measures how much force is needed to pull two bonded shoe materials apart.<\/p>\n

In footwear, it is often used to test the bond between the upper and outsole, midsole and outsole, rubber and leather, EVA and rubber, or PU and fabric.<\/p>\n

The result is usually shown in N\/mm<\/strong>, which means newtons per millimeter of width. In simple words, it shows how much pulling force the bonded area can take.<\/p>\n

A higher number usually means a stronger bond. But factories should not only look at the number. They should also check how the sample fails during the test.<\/p>\n

2.Common Shoe Adhesive Peel Strength Standards<\/h2>\n

There are several test methods used in footwear bonding.<\/p>\n

ISO 17708<\/a> is used to test upper sole adhesion. It checks the resistance to separation between the upper and outsole. This method is useful because it tests the real bond in the shoe structure, not only the glue itself.<\/p>\n

ISO 20344<\/a> is used for personal protective footwear, such as safety shoes and occupational shoes. For safety footwear, upper-to-outsole bond strength often uses 4.0 N\/mm<\/strong> as an important reference value. If the sole material tears during testing, 3.0 N\/mm<\/strong> may be accepted in some cases.<\/p>\n

SATRA TM411<\/a> is a footwear test method for the peel strength of sole bonds. It is often used by footwear labs, brands, and factories because it is close to real shoe production. SATRA also explains more about sole adhesion peel strength testing<\/a>.<\/p>\n

ASTM D903<\/a> is a general test method for peel or stripping strength of adhesive bonds. It is not only for shoes, but it may appear in adhesive reports or material test documents.<\/p>\n

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3.What Peel Strength Value Is Good?<\/h2>\n

A good shoe adhesive peel strength<\/strong> value depends on the shoe and material.<\/p>\n

For safety footwear, 4.0 N\/mm<\/strong> is often used as a key reference for upper-to-outsole bonding. But sports shoes, leather shoes, casual shoes, vulcanized shoes, and sandals may have different targets.<\/p>\n

The correct value depends on:<\/p>\n