Quickly and efficiently determine the tack or grab of an adhesive with the cheminstruments loop tack tester. Measuring adhesive performance in transdermal delivery systems. A study 21 of the rolling ball astm 3121 2, loop tack ftm 9 7 and. The loop tack value of a pressure sensitive material is expressed as the force required to separate a loop of material at a specified speed after being brought. Loop tack test ftm 9 is used to assess the adhesive initial tack see figures 3 and 4. Meets specifications set by astm, tlmi, pstc 16 and finat ftm 9. May 22, 2014 ftm 5 accelerated ageing extended storage. Ftm 9, test for adhesion and loop tack, where v is the velocity of the tensile tester as it descends onto and then pulls up the test sample. The higher the loop tack measurement, the greater the tack of the material. This test method describes a means of assessing the tack of a pressure sensitive.
Ftm 9 measurement of initial stickiness quick stick procedure. The strips should be 25mm wide and have a minimum length of 175mm in the machine direction. The lt will accommodate test panels with dimensions of 1 wide by any length. Ftm 4 high speed release force ftm 5 accelerated ageing extended storage ftm 8 resistance to shear from a standard surface ftm 9 loop tack measurement ftm 10 quality of silicone coated substrates for selfadhesive laminates.
Our method is based on the standard din en 285101 peel test for a flexiblebondedtorigid test specimen assembly. Finat ftm 9 loop tack measurement this test method describes a means of assessing probably the most important and yet the hardest to measure property of pressure sensitive materials, the tack. Loop tack test fixture to test pressuresensitive tack property of adhesives according to astmd6195, finatftm9, pstc16, en1719 similar ths864. Factors that need to be taken into account when designing a label material for good mandrel performance therefore include the modulus and thickness of both facestock and adhesive, and the. Peel adhesion dwell times were 20 minutes initial and 24 hours. Loop tack test for pressure sensitive adhesives rycobel. Label materials intended for use on highspeed packaging lines faster than 150 pcsmin must be robust and have high initial tack. Jason ness, andrew hearley, keith kirkwood, shankar godavarti. Special fixture mecmesin, pdv16a, is best fixture for actual test. One method to measure the tack force strength of an adhesive is to perform the loop tack test method described in specification astm d6195.
The resulting mixture was first sonicated 15 min at 9 output control and 80% duty cycle and finally homogenized for 4 cycles in a twovalves high pressure homogenizer manton gaulin apv lab 60. Us patent application for hotmelt pressure sensitive. Simultaneous free radical and addition miniemulsion. Ftm 9 quick stick tack measurement test and the tlmi lib2 tensile tester loop tack test also use a specimen strip of that length. Professional automatic loop tack tester astm d6195. Ftm 9 loop tack measurement loop tack test is a measurement to assess one of the most important properties of pressure sensitive materials, the tack as initial grab or application tack. Lab master loop tack tester 8094 the lab master loop tack tester is designed for precise measurement of adhesion, tack, quick stick and cohesion. The resistance of a pressure sensitive material to ultra violet light is defined as the reduction in peel adhesion ftm 1 or 2, shear ftm 8, loop tack ftm 9 and the degree of adhesive discoloration and strike through after exposure to a defined amount of radiation similar in spectrum to that of solar radiation.
Laboratory testing chemsultants international united states. The fixture meets the requirements for astm d6195, finat ftm 9 and pstc 16. A loop tack test is carried out to test standard finat no. The method described should allow the end user to compare the initial grab or application tack of different laminates. When used with the vantage nx universal tensile tester, a. The loop was brought in contact and immediately removed at 300 mmmin. Loop tack and 180 peel adhesion were measured on glass substrate using finat ftm 9 and ftm 1 test methods, respectively. A loop of this ribbon, adhesive outside, is fixed to the mobile jaw of a dynamometer, then placed in contact with a stainless steel plate. Apr 19, 2017 the loop tack measurement can be ascertained by the method described in finat test method ftm no. Pressure sensitive adhesives are typically applied to films, labels, tapes, and stickers where the initial tack force is an important characteristic of the product. The loop tack measurement can be ascertained by the method described in finat test method ftm no.
Peel adhesion test at 90 degree angle at a removal rate of 300 mmmin. How to perform an adhesive loop tack strength test astm. In order to optimize a formulation, it is necessary to use specific tests for the evaluation of tack. A statistical method for the prediction of the loop tack and. Thousands of data points per test are used to generate forcedistance curves that reveal material behavior during test. The adhesive properties of a tds can only be fully and. The loop tack test measures the strength of bonding, after a contact time of about 5 sec, between the adhesive and a 2.
These tests are preformed to determine the tack adhesive values of the selected psa material as it is removed from a stainless steel test panel. Pressuresensitive adhesives comprising low molecular. Test method b using loop tack tester makes use of a specimen strip five in. The loop tack test measures the contact tack of an adhesive tape that has been formed into a loop. Quickly and efficiently determine the tack or grab of an adhesive with the. The hot melt adhesive to be tested is deposited in the quantity of 100 gm2 on a film of mylar 80 micrometers thick and 2 cm wide. Tear growth, peel, and adhesion characteristics of films and. Determined by the finat test method ftm 9, loop tack measurement. This professional loop tack tester is designed and engineered in accordance with international test standards including. In some embodiments, the tack of the coating formulation disclosed herein is comparable to or better than that of a coating formulation prepared solely from natural. The test was carried out using a loop tack tester chelsinruments according to the ftm 9. Ftm 6 resistance to ultraviolet light ftm 7 silicone coat weight ftm 8 resistance to shear from a standard surface ftm 9 loop tack measurement ftm 10 quality of silicone coated substrates for selfadhesive laminates.
The adhesion of a tds to the skin is obtained by using pressuresensitive adhesives psas, which are defined as adhesives capable of bonding to surfaces with the application of light pressure. The adhesives tested with this test are typically pressure sensitive adhesives psa applied to films, labels, tapes, and stickers where the initial tack force is an important characteristic of the product. Loop tack tests measure the bond formed by pressure sensitive. Both the finat ftm 9 quick stick tack measurement test and the tlmi lib2 tensile tester loop tack test also use a specimen strip of that length. The loop was brought in contact and immediately removed at 300 mm min. Ftm 9 loop tack measurement loop tack tests provide the means of assessing the most important and yet the hardest to measure property of pressure sensitive materials, the tack. Astm d6195 032019 standard test methods for loop tack. The fixture has a tab attached that is clamped and held in place by the lower grip of the universal testing machine. Loop tack measurements introduction the capability to rapidly and reliably bond two surfaces is a key performance requirement in many pressure sensitive adhesive products, particularly adhesive tapes and labels. The loop tack tests were performed using finat ftm 9 conditions. The method described should allow the end user to compare the initial grab or. Adhesion is measured 20 minutes and 24 hours after.
Finat technical handbook test methods 9th edition 2014 uk. The loop is placed in contact with a stainless steel plate or other material in a contact area of 25 x 25 mm and is detached at a speed of 300 mmmin. A key property for successful bonding is the tack or stickiness of the adhesive. The loop tack value of a pressure sensitive material is expressed as the force required to separate a loop of material at a specified speed after being brought into contact with a specified area of a standard surface. Bs en1719 adhesives for paper and board, packaging and disposable sanitary products. A statistical method for the prediction of the loop tack. Review of methods for the measurement of tack adhesives toolkit. The test system is driven by emperor software, that measures the peak force to completely separate the loop from the glass plate. An adhesive ribbon 25 mm wide and at least 175 mm long is attached to the clamp of a dynamometer. Loop tack tests measure the bond formed by pressure sensitive adhesives when brought briefly into contact with another surface.
Small enough to fit on a desktop or can be carried from lab to production line. Laboratory testing chemsultants international united. Record the maximum force necessary to completely separate each loop from the glass plate. The loop tack test is used to measure the tack force strength of a pressure sensitive adhesive psa according to astm d6195. Pressuresensitive adhesives comprising low molecular weight. Ftm 11 quality of silicone coated substrates for selfadhesive laminates. Adhesive properties and testing methods according to finat. Loop tack measurements measures the coating formulations tack, or the force of attraction between the surface of the adhesive and the substrate. Astm d6195 standard test methods for loop tack finat ftm 9 loop tack measurement tlmi lib1 loop tack tester tlmi lib2 tensile tester.
The 90peel test is used for the evaluation of adhesion between two materials. Loop tack measurement this test method describes a means of assessing probably the most important and yet the hardest to measure property of pressure. Astm d6195 adhesive loop tack strength testing admet. Loop tack results per ftm 9 are reported in newtons. International standards, astm d6195 method a, pstc16 method a and. An adhesive compositions containing at least one first styreneisoprenestyrene block copolymer having a diblock content of not less than 45%, at least one second styreneisoprenestyrene block copolymer having a styrene content of not more than 30 wt. Test methods to evaluate tack specialchem adhesives. The loop tack fixture meets the requirements for astm d6195, finat ftm 9 and pstc 16. Psa samples for loop tack, 180 peel adhesion and shear resistance evaluations were prepared and measured according to finat test methods. Statistical method for the prediction of the loop tack and the p eel of psas from prob e test measurements. Pstc 16 loop tack test methods for pressure sensitive adhesive tapes loop tack finat ftm 9 loop tack loop tack measurement provide the means of assessing the most important and yet the hardest to measure property of pressure sensitive materials, the tack. Adhesive tack is the property that controls the instant formation of a bond when an adhesive. The vantage nx tester is paired with map4 materials testing software which is configured to meet the industry standard and programs the test based on the method selected. How to measure quick stick using a loop test system.
Loop tack tests provide the means of assessing the most important and yet the hardest to measure property of pressure sensitive materials, the tack. Test methods to evaluate tack tack is defined as the stickiness or tackiness of an adhesive in a liquid or semiliquid state, but we often have difficulty in defining it explicitly or in absolute units. Ftm 30 measurement of the uv drying of uv inks and white print colours. That is the only length specimen strip that fits properly in the loop tack tester. A sample is prepared and the application tack is measured using mecmesins multitestxt console controlled test system. Peel adhesion test at 180 degree angle at a removal rate of 300 mmmin. The method allows the end user to compare the initial grab or application tack of different laminates and can be extremely useful to those working with automatic. No stickslip phenomenon was observed during the peel and loop tack tests. How to perform an adhesive loop tack strength test astm d6195.
Measure improve service measure productcharacteristics. It is supposed to allow the end user to compare the initial grab or application tack of different laminates and is useful for those working with. This compact tack testing machine meets the astm and tlmi specification. Loop tack tester the cheminstruments lt loop tack tester is a compact testing instruments designed to allow the user to quickly and efficiently determine the tack or grab of an adhesive. Test method to assess the initial grab or application tack of pressure sensitive materials. Ftm 10 quality of silicone coated substrates for selfadhesive laminates. Ftm 7 silicone coat weight by energydispersive xray fluorescence spectometry. When used with the vantage nx universal tensile tester, a pair of grips hold the sample and the fixture during the test. Measure improve service loop tack fixture the loop tack test measures the tack instant grip of an adhesive. Ftm9 pressure sensitive tape loop tack test equipment. The capability to rapidly and reliably bond two surfaces is a key performance requirement in many pressure sensitive adhesive. Aug 20, 2012 the therapeutic performance of a transdermal delivery system tds can be affected by the quality of contact between the patch and the skin.
927 494 254 973 830 905 305 616 1112 1636 428 963 900 962 297 871 378 798 1119 874 538 675 79 1626 918 648 149 247 1103 1171 1540 13 1348 1639 1036 1151 495 825 1589 387 399 1057 363 1290 1277 1060