90 Degree Peel Test

A peel test is performed between two substrates bonded together with an adhesive. The substrates may be both flexible or one may be flexible while the other is rigid. The adhesive itself will generally take the form of a thin layer between the two substrates such as the adhesive located on the underside of a piece of tape that has been placed against a steel plate.

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Purpose of Peel Tests:

Generally the goal of a peel test is to determine the adhesive strength of the material or the strength of the adhesive bond between two materials. This adhesive strength may be referred to as the “stickiness” of a material as it is a measure of the samples resistance to separation from one another after the adhesive has been applied. This measured value may then be used to determine if the adhesive bond is strong enough or too strong for the application and whether a different adhesive or bonding process is needed.

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Common Peel Tests:

The most common types of peel tests for the measuring of adhesive strength are the T-peel, 90 degree peel, and the 180 degree peel. The T-peel test is a type of tensile test performed upon two flexible substrates that have been bonded together and placed into peel test grips such that one substrate sticks up and the other sticks down while the bonded area sticks out horizontally so that the entire setup forms a “T” shape. The 90 degree test requires a 90 degree peel test fixture to determine the adhesive strength between a flexible (tape) and rigid substrate (plate), where the plate lies horizontally with the gripped end of the tape sticking up perpendicular while the rest is bonded to the plate so that it forms an “L” shape. The 180 degree test is similar to the 90 degree peel test except that the bonded area between the tape and plate is placed vertically between the peel test grips while the free end of the of plate is gripped by the bottom and the free end of the tape is gripped by the top so that it forms a tight “U” shape.

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Types of Materials:

A peel test is commonly used to measure the adhesive strength between the bonded surface of two flexible substrates or a flexible and rigid substrate. The flexible substrate often consists of tape, film, thin plastic material, rubber, or other polymers, whereas the rigid substrate is commonly but not limited to a type of metal, rigid plastic or composite. The conditions under which these materials are tested are composed of various combinations of pretreatment, temperature and speed of testing depending upon the standard test method used to guide the testing process.

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Popular Testing Applications

The ASTM F88 standard describes the test procedure for measuring the maximum seal ...
ASTM D903 is a standard test procedure to determine the comparative peel or stripp...
ASTM D5170 is a standard test method to measure peel strength of hook and loop fas...
Peel testing of adhesive and pressure sensitive tapes is used for quality assuranc...
Peel testing typically involves several variables which must be managed in order t...
Loop tack tests provide the means of assessing the most important and yet the hard...
ASTM C794 determines the strength and characteristics of the peel properties of a ...
ASTM D3167 is a standard test procedure used to measure the average peel strength ...
ASTM D6392 describes destructive quality control and quality assurance tests used ...
ASTM D2979 determines the pressure-sensitive tack of adhesives. This test method d...
ASTM D1781 is a standard test to determine the peel resistance of adhesive bonds o...
ASTM D1876 is a test method used to measure the peel separation strength between t...
ASTM D6862 covers the determination of the resistance-to-peel strength of an adhes...
Bond Strength of Labels per ASTM D6252, ASTM D903 & ASTM D6195 Ensuring produc...
The seal strength of sterile medical packages containing medical devices is highly...
ASTM D5458 measures cling between two layers of film, in both a stretched and unst...
FTM-1 quantifies the permanence of adhesion or peelability of self-adhesive pressu...
ASTM D413 helps determine the quality of a product by determining the force per un...
Peel tests are used to determine the bond strength of bonded, fused, or laminated ...
A manufacturer of dual pane windows needed to test the tensile bond strength of ad...
Peel adhesion can be measured using standards provided by FINAT, an international ...
T-peel tests determine the relative peel resistance of adhesive bonds between thin...
ASTM D6252 measures the peel adhesion of pressure-sensitive label stocks. In this ...
ASTM D6195 is a standard test method to determine the peel strength of pressure-se...
IPC TM 650 Section 2.4 offers a list of mechanical tests that include adhesion, fa...
The performance of package seals can be one of the most important attributes of cu...
ASTM D6496 determines the average bonding strength between the top and bottom laye...
FTM 11 describes a technique whereby the effect of the release surface on the adhe...
The purpose of this test is to compare the adhesive response of different laminate...
International testing standards organizations work to ensure product labels and ta...
Climbing drum peel tests determine the peel resistance of adhesive bonds between a...
The test method described in ISO 36 is used for measuring the force required to se...
Container seals guarantee a certain quality of the product inside. Weather the con...
FTM 3 is used to determine the force required to separate the release backing from...
ASTM F 2458 (F-2458) pertains to tissue adhesives which are becoming more prevalen...
The flexible medical packaging industry relies on product sterilization. Without a...
Testing rubber adhesion to metal requires the use of application specific sample t...
Determination of peel resistance of high-strength adhesive bonds by floating-rolle...
Epoxy's, glues, and plastic welders are used in a wide variety of application that...
Battery of mechanical tests for identification cards. Give our test engineers a ca...
Peel adhesion testing for tape is done with four different techniques which mimic ...
ISO 10447 specifies the procedure and recommended tooling to be used for testing r...
ASTM D3807 determines strength properties of adhesives in cleavage peel by tension...
Electro plating plastics with metal has become popular in the last fifty years be...
Package strength tests measure the force required to separate two components of a ...
Specifies a test method for determining the peel strength of touch and close faste...
The medical device industry requires extensive testing on packaging used to seal m...
Quality of food upon opening is directly related to the quality of the packaging m...
Specifies a method for determining the adhesion strength of rubber-to-metal bonds ...
ASTM F 2256 (F-2256) determines the means for comparison of the adhesive strengths...
ISO 813 - determination of the adhesive strength of a vulcanized or thermoplastic ...
Coating adhesion of rubber or plastics-coated fabrics may be determined using the ...
EN 1939 is used to investigate the peel adhesion properties of self-adhesive tapes...
Peel adhesion strength is an important identifier for the correct use and quality ...
Measuring the peel or stripping strength of adhesive bonds allows for the determin...
Tissue adhesives are used in bandages, wound closure and surgical sealants. Based ...
Measuring the peel resistance of adhesives using the t-peel test allows for the de...
The test method specified in ISO 11339 is used to determine the peel strength of a...
The 180 degree peel adhesion test measures the level of adhesion of the credit ca...
Tack measurement for pressure-sensitive adhesives allow for the determination of a...
ASTM D413 and ISO 36 provide peel, adhesion and tensile adhesion test methods to c...
The peel strength of touch and close fasteners may be determined using the test me...