CN115329585A - Method for evaluating stripping force of release film - Google Patents
Method for evaluating stripping force of release film Download PDFInfo
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- CN115329585A CN115329585A CN202211008339.7A CN202211008339A CN115329585A CN 115329585 A CN115329585 A CN 115329585A CN 202211008339 A CN202211008339 A CN 202211008339A CN 115329585 A CN115329585 A CN 115329585A
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- release film
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The invention provides an evaluation method of a stripping force of a release film, which comprises the following steps: s1, obtaining a stripping speed value of a release film to be tested; and S2, inputting the peeling speed value into a mathematical model correlating the peeling speed and the releasing force of the release film to obtain an estimated releasing force value of the release film participating in the test. In the evaluation method, the mathematical model which is related to the peeling speed and the releasing force of the release film is established by utilizing the different lower peeling speed values and the corresponding different releasing force values of the release film, and the estimated releasing force of the release film at the higher peeling speed or higher peeling speed is calculated by utilizing the mathematical model, so that the problem that the releasing force of the release film at the higher peeling speed or higher peeling speed cannot be tested by utilizing conventional equipment in the prior art is solved.
Description
Technical Field
The invention belongs to the field of release film peeling usability, and particularly relates to an evaluation method for the peeling force of a release film.
Background
When the release film is manufactured, the release force and the residual joint rate when the release film is attached to a pressure-sensitive adhesive and the like are usually tested to evaluate the matching performance of the release film in actual use, and the general test evaluation is only the release film performance required by manufacturers for manufacturing the release film and manufacturers for manufacturing adhesive tapes. And for the producer who actually uses the sticky tape that contains from type membrane, along with the development of mechanical automation, the production speed of the operation of production line is accelerated, the sticky tape that contains from type membrane generally need use under high speed, consequently, can not represent high-speed under the actual use from type force from type membrane under the conventional test, because current equipment can only measure from type force from type membrane under lower peeling speed generally, the producer who actually uses contains from type membrane sticky tape can not test from type force under the high-speed peeling, cause and appear anti-type, the glue film tears breakage and from type membrane fracture scheduling problem in the in-service use process.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention provides an evaluation method of the stripping force of a release film, so as to obtain the release force of the release film at the actual stripping speed, and facilitate the selection of the release film with higher matching degree with the actual production line.
According to a first aspect of the present invention, there is provided a method for evaluating a peel force of a release film, comprising the steps of:
s1, obtaining a stripping speed value of a release film to be tested;
and S2, inputting the peeling speed value into a mathematical model for correlating the peeling speed and the releasing force of the release film to obtain an estimated releasing force value of the release film to be tested.
Preferably, the above evaluation method further comprises:
s3, comparing the estimated release force value with a preset release force value range aiming at the reference release film;
and S4, based on the comparison result of S3, when the estimated release force value belongs to the preset release force value range, judging that the participating release film is qualified, and when the estimated release force value does not belong to the preset release force value range, judging that the participating release film is unqualified.
Preferably, the release film to be tested is consistent with the release film used for establishing the mathematical model.
In the evaluation method, by establishing a mathematical model correlating the peeling speed and the peeling force of the release film, an estimated release force value of the release film under a certain peeling speed can be obtained by reverse estimation, and whether the estimated release force value meets a preset release force value range (the release force value range of the actual requirement of a client at the actual peeling speed is used) is judged, so that the purpose of selecting a proper release film according to the actual requirement of the client on the release film is achieved, the time for the client to verify the applicability of the release film is greatly shortened, and the problems of reverse release, tearing, breakage, film breakage and the like of a release film product caused by the use of the release film unmatched with an actual production line are avoided. The trial release film comprises a release film used for the mathematical model and a release film different from the release film used for the mathematical model.
Preferably, the mathematical model is selected from a linear functional relationship or an exponential functional relationship.
Preferably, the linear function relationship is F = a × v + b, where F denotes an estimated release force value, v denotes a peeling speed value, a denotes a constant term, and b denotes a constant term.
Preferably, the exponential function relationship is F = x × y z×v Wherein F represents an estimated release force value, v represents a peeling speed value, x represents a constant term, y represents a constant term, and z represents a constant term.
Preferably, in the exponential function relationship, y is a natural constant e, and the exponential function relationship is F = x × e z×v 。
In long-term research and development and production, the fact that a mathematical model established by the stripping speed and the stripping force of the release film adopting the harder release agent accords with a linear function relationship is found, and the mathematical model established by the stripping speed and the stripping force of the release film adopting the softer release agent accords with an exponential function relationship.
Preferably, the method for obtaining the peeling speed value comprises the following steps: and (3) adhering a TESA7475 standard adhesive tape to the release film, and peeling the TESA7475 standard adhesive tape at a peeling angle of 180 degrees under the environment with the relative humidity of 50% + -5% and the temperature of 23 +/-2 ℃ to obtain the peeling speed value.
Preferably, in the method for acquiring the peeling speed value, the peeling speed value is used as a variable, and different corresponding releasing force values of the release film at different peeling speed values are tested.
Preferably, the release film is tested using TESA7475 standard tape for different release forces at different values of peel speed, with reference to testing of the quality of the silicone base paper in FINAT test method: the method for testing the release force takes the peeling speed value as a variable and tests different release force values of the release film under different peeling speed values.
Preferably, the steps of testing the release film for different release force values at different peel speed values using the TESA7475 standard tape are as follows:
step one, adhering a TESA7475 standard adhesive tape and a release film to form a sample, and placing the sample at the temperature of 23 +/-2 ℃ for 20 minutes to ensure that the TESA7475 standard adhesive tape and the release film are well contacted;
fixing the sample on a tension tester or a similar instrument, setting a stripping speed value and a stripping angle of the instrument, and stripping the TESA7475 standard adhesive tape from the release film to obtain a release force value, wherein the stripping angle is 180 degrees;
and in the second step, the peeling speed value is used as a variable to test different corresponding peeling force values of the release film under different peeling speed values.
Preferably, the peeling speed range of the release film for establishing the mathematical model is 300 mm/min-4800 mm/min.
Preferably, when the mathematical model is established, the mathematical model is obtained by fitting the following peeling speed values of the release film and the release force values corresponding to the peeling speed values: 300mm/min, 600mm/min, 1200mm/min, 1800mm/min, 2400mm/min, 3600mm/min, 4800mm/min.
In the scheme, a mathematical model is established by utilizing a relatively low peeling speed value of the release film and a release force value corresponding to the peeling speed value, so that the estimated release force of the release film under the actual peeling speed can be reversely deduced by utilizing the mathematical model. In the scheme, the related release force can be directly measured by using conventional equipment, and can also be calculated by using a mathematical model in the evaluation method of the scheme. It is worth noting that the stripping speed of the release film in the conventional equipment is low, so that the conventional equipment cannot be used for testing the release force of the release film in an actual production line at a higher stripping speed, the scheme establishes a mathematical model by using the stripping speed of the release film of 300-4800 mm/min and the corresponding release force at each stripping speed, and then can calculate the estimated release force value at a high stripping speed (higher than the highest stripping speed of the release film measured by the conventional equipment) by using the mathematical model.
Preferably, the release film to which the evaluation method is applied is a silicone oil release film.
The silicone oil release film is generally a release film prepared by adopting silicone oil as a release agent, and the silicone oil has extremely low surface energy, excellent heat resistance, water resistance, solvent resistance and aging resistance, and is the most widely used release agent material at present. Therefore, the evaluation of the stripping and releasing force of the silicone oil release film is beneficial to selecting the release film with higher matching degree with the actual production requirement, and has great significance for modern automatic production.
Preferably, the release film to which the evaluation method is applied has a thickness of 25 to 150 μm.
According to another aspect of the present invention, there is provided an evaluation system for peel force of a release film, the evaluation system comprising: the input module is used for inputting the peeling speed value of the reference release film into a mathematical model which is related to the peeling speed and the release force of the release film; and the operation module is used for calculating the estimated release force value of the release film to be tested by using the mathematical model.
Preferably, the evaluation system further comprises: and the test module is used for acquiring the peeling speed value of the release film to be tested.
Preferably, the evaluation system further comprises: and the judging module is used for comparing the estimated release force value with a preset release force value range aiming at the reference release film and judging whether the reference release film is qualified or not.
Preferably, the test module can also be used for directly testing the release force of the release film under different peeling speeds, and acquiring different peeling speed values and corresponding different release force values of the release film under test to establish a mathematical model about the peeling speed and the release force of the release film under test. The corresponding situation at this time is the situation that the release film participating in the test is consistent with the release film establishing the mathematical model.
In summary, the invention establishes the mathematical model correlating the peeling speed and the releasing force of the release film by using the different lower peeling speeds and the corresponding different releasing forces of the release film, and calculates the estimated releasing force of the release film at the higher peeling speed or higher peeling speed by using the mathematical model, thereby solving the problem that the conventional equipment cannot be used for testing the releasing force of the release film at the higher peeling speed or higher peeling speed in the prior art. And, the stripping speed values and release force values involved in establishing the mathematical model are tests of the quality of the silicone base paper using TESA7475 standard tape, referred to in FINAT test method: the method is characterized in that the method is obtained by testing conditions under a release force testing method, so that the evaluation method obtained by using the mathematical model in the scheme has higher accuracy.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
In this embodiment, an evaluation system for the peeling and release force of the release film is adopted to judge whether the tested release film meets the actual requirements of customers, in this embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the release force is 100-110 g/25mm, 10000mm/min is used as the peeling speed value of the tested release film, and 100-110 g/25mm is used as the preset value range of the release force.
The release film used for establishing the mathematical model correlating the peeling speed and the release force of the release film in the embodiment is a silicone oil release film, and the adopted silicone oil (release agent) is harder silicone oil with the thickness of 50 μm and is marked as silicone oil release film A. In this embodiment, the reference release film is also the silicone release film a, and in other specific embodiments, the reference release film may also be a silicone release film different from the silicone release film a.
The method for evaluating the peeling and releasing force of the release film in the embodiment comprises the following steps:
s1, obtaining the stripping speed value of a release film to be tested, namely 10000mm/min; test of the quality of the silicone base paper in reference to FINAT test method, using TESA7475 standard adhesive tape: testing conditions under the method for testing the release force of the silicone oil release film A under 300mm/min, 600mm/min, 1200mm/min, 1800mm/min, 2400mm/min, 3600mm/min and 4800mm/min, and the obtained release force results are respectively 7.5g/25mm (300 mm/min), 10.4g/25mm (600 mm/min), 17.5g/25mm (1200 mm/min) and 23.3g/25mm (1800 mm/min), 28.5g/25mm (2400 mm/min), 40.8g/25mm (3600 mm/min) and 54.6g/25mm (4800 mm/min), establishing a mathematical model for correlating the stripping speed and the stripping force of the silicone oil release film A by using the different stripping speed values and the corresponding different stripping force values to obtain a mathematical model F =0.0103v +4.4132 and a correlation coefficient R 2 =0.9988, wherein F represents an estimated release force value and v is a peel speed value;
s2, inputting a stripping speed value of 10000mm/min into a mathematical model linear function F =0.0103v +4.4132 for correlating the stripping speed and the stripping force of the silicone oil release film A to obtain an estimated release force value of the reference release film of 107.41g/25mm;
s3, comparing the estimated release force value of 107.41g/25mm with a preset release force value range of 100-110 g/25mm for the release film to be tested;
and S4, based on the comparison result of S3, estimating that the release force value of 107.41g/25mm belongs to the preset release force value range of 100-110 g/25mm, and judging that the tested release film is qualified.
In this embodiment, according to the test method in S1, actually measured release force values at the release speed values of 400mm/min, 1600mm/min and 4000mm/min of the silicone release film a are respectively 8.52g/25mm (400 mm/min), 20.7g/25mm (1600 mm/min) and 45.4g/25mm (4000 mm/min), the estimated release force values obtained by substituting 400mm/min, 1600mm/min and 4000mm/min into the mathematical model linear function F =0.0103v +4.4132 are respectively 8.53g/25mm (400 mm/min), 20.89g/25mm (1600 mm/min) and 45.61g/25mm (4000 mm/min), and comparing the estimated release force value with the actually measured release force value, it can be known that the estimated release force value is close to the actually measured release force value, so the evaluation method in this scheme has high accuracy.
As can be seen from the evaluation method of the peeling and releasing force of the release film in this embodiment, the silicone oil release film a used in this embodiment meets the demand of the release force of the customer at the peeling speed in actual use, and can be selected. When being applied to the actual production line of a customer, the silicone oil is not reflected from the type, contains the product of the type film, and is torn and broken and the problem of the type film breakage.
Example 2
In this embodiment, an evaluation system for the peeling and release force of the release film is adopted to judge whether the tested release film meets the actual requirements of customers, in this embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the release force is 100-110 g/25mm, 10000mm/min is used as the peeling speed value of the tested release film, and 100-110 g/25mm is used as the preset value range of the release force.
The release film used for establishing the mathematical model correlating the peeling speed and the release force of the release film in the embodiment is a silicone oil release film with a thickness of 50 μm, and the adopted silicone oil (release agent) is softer silicone oil and is marked as silicone oil release film B. In this embodiment, the reference release film is also the silicone release film B, and in other embodiments, the reference release film may also be a silicone release film different from the silicone release film B.
The method for evaluating the peeling and releasing force of the release film in the embodiment comprises the following steps:
s1, obtaining a stripping speed value of a release film to be tested of 10000mm/min; test of the quality of the silicone base paper in reference to FINAT test method, using TESA7475 standard adhesive tape: testing the release force of the silicone oil release film B under 300mm/min, 600mm/min, 1200mm/min, 1800mm/min, 2400mm/min, 3600mm/min and 4800mm/min under the test condition of the release force test method to obtain the release force results of 7.2g/25mm (300 mm/min), 11.2g/25mm (600 mm/min), 17.4g/25mm (1200 mm/min), 21.8g/25mm (1800 mm/min), 30.4g/25mm (2400 mm/min), 45.8g/25mm (3600 mm/min) and 80.4g/25mm (4800 mm/min) respectively, establishing mathematical models for correlating the release speed and the release force of the silicone oil release film B according to the different release speed values and the corresponding different mathematical release force values to obtain the mathematical model of F =8.1367 × e 0.0005v Coefficient of correlation R 2 =0.9662, f denotes estimated release force value, v is peel speed value;
s2, inputting a stripping speed value of 10000mm/min into a mathematical model linear function F =8.1367 × e for correlating the stripping speed and the stripping force of the silicone oil release film B 0.0005v Obtaining an estimated release force value of 1207.59g/25mm of the release film to be tested;
s3, comparing the estimated release force value 1207.59g/25mm with the preset release force value range of 100-110 g/25mm of the release film to be tested;
and S4, based on the comparison result of S3, estimating that the release force value 1207.59g/25mm does not belong to the preset release force value range of 100-110 g/25mm, and judging that the tested release film is unqualified.
In this embodiment, according to the test method in S1, actually measured release force values at release speed values of 400mm/min, 1600mm/min and 4000mm/min, respectively 9.89g/25mm (400 mm/min), 18.2g/25mm (1600 mm/min) and 60.3g/25mm (4000 mm/min), are further performed on the silicone oil release film B, and the mathematical model linear functions F =8.1367 × e is substituted for 400mm/min, 1600mm/min and 4000mm/min 0.0005v In the method, the obtained estimated release force values are respectively 9.94g/25mm (400 mm/min), 18.1g/25mm (1600 mm/min) and 60.1g/25mm (4000 mm/min), and the estimated release force value is compared with the actually measured release force value, so that the estimated release force value is very close to the actually measured release force value, and therefore the evaluation method in the scheme has high accuracy.
As can be seen from the evaluation method of the peeling and releasing force of the release film in this embodiment, the silicone oil release film B used in this embodiment does not meet the demand of the release force of the customer at the actual peeling speed, and is not selectable. The silicone oil release film B is used in an actual production line of a client, and the problems of reverse release or tearing and crushing of a product containing the release film or breakage of the release film occur.
Example 3
In the embodiment, an evaluation system for peeling and releasing force of the release film is adopted to judge whether the release film to be tested meets the actual requirements of customers, in the embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the releasing force is 100-110 g/25mm, 10000mm/min is taken as the peeling speed value of the release film to be tested, and 100-110 g/25mm is taken as the value range of the preset releasing force.
The release film used for establishing the mathematical model correlating the peeling speed and the release force of the release film in this embodiment is a silicone oil release film, and the adopted silicone oil (release agent) is harder silicone oil with a thickness of 50 μm and is marked as silicone oil release film C. In this embodiment, the reference release film is also the silicone release film C, and in other specific embodiments, the reference release film may also be a silicone release film different from the silicone release film C.
The method for evaluating the peeling and releasing force of the release film in the embodiment comprises the following steps:
s1, obtaining a stripping speed value of a release film to be tested of 10000mm/min; test of the quality of the silicone base paper in reference to FINAT test method, using TESA7475 standard adhesive tape: the test conditions under the method for testing the release force of the silicone oil release film C under 300mm/min, 600mm/min, 1200mm/min, 1800mm/min, 2400mm/min, 3600mm/min and 4800mm/min respectively obtain the results of the release force of 6.9g/25mm (300 mm/min), 8.9g/25mm (600 mm/min), 14.6g/25mm (1200 mm/min), 17.9g/25mm (1800 mm/min), 24.9g/25mm (2400 mm/min), 31.4g/25mm (3600 mm/min) and 41.4g/25mm (4800 mm/min), and the mathematical model for correlating the stripping speed and the release force of the silicone oil release film C is established by utilizing the different stripping speed values and the corresponding different release force values to obtain the mathematical model of F0.0076v 4.8555, and the correlation coefficient R = 4.0076v 2 =0.9946, wherein F represents the estimated release force value and v is the peeling speed value;
s2, inputting a peeling speed value of 10000mm/min into a mathematical model linear function F =0.0076v +4.8555 for correlating the peeling speed and the release force of the silicone oil release film C, and obtaining an estimated release force value of the release film to be tested, wherein the estimated release force value is 80.8555g/25mm;
s3, comparing the estimated release force value of 80.8555g/25mm with a preset release force value range of 100-110 g/25mm for the release film to be tested;
and S4, based on the comparison result of S3, estimating that the release force value of 80.8555g/25mm does not belong to the preset release force value range of 100-110 g/25mm, and judging that the tested release film is unqualified.
In this embodiment, according to the test method in S1, actually measured release force values at the release speed values of 400mm/min, 1600mm/min and 4000mm/min of the silicone oil release film C are respectively 7.7g/25mm (400 mm/min), 16.9g/25mm (1600 mm/min) and 36.2g/25mm (4000 mm/min), the measured release force values are substituted into the mathematical model linear function F =0.0076v +4.8555 by 400mm/min, 1600mm/min and 4000mm/min, and the estimated release force values are respectively 7.90g/25mm (400 mm/min), 17.0g/25mm (1600 mm/min) and 35.3g/25mm (4000 mm/min), and the estimated release force value is compared with the actually measured release force value, so that the estimated release force value is close to the actually measured release force value, and therefore the evaluation method in this embodiment has high accuracy.
Known from the evaluation method of the release force for stripping the release film in the embodiment, the silicone oil release film C adopted in the embodiment does not meet the release force requirement of a customer at the actual stripping speed, and is not selectable. Apply this silicone oil from type membrane C in the actual production line of customer, appear the anti-type of leaving, contain the product of type membrane and tear breakage and from the cracked problem of type membrane.
Example 4
In the embodiment, an evaluation system for peeling and releasing force of the release film is adopted to judge whether the release film to be tested meets the actual requirements of customers, in the embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the releasing force is 100-110 g/25mm, 10000mm/min is taken as the peeling speed value of the release film to be tested, and 100-110 g/25mm is taken as the value range of the preset releasing force.
The release film used for establishing the mathematical model correlating the peeling speed and the release force of the release film in this embodiment is a silicone oil release film with a thickness of 50 μm, and the silicone oil (release agent) used is softer silicone oil and is marked as silicone oil release film D. In this embodiment, the reference release film is also the silicone release film D, and in other specific embodiments, the reference release film may also be a silicone release film different from the silicone release film D.
The method for evaluating the peeling and releasing force of the release film in the embodiment comprises the following steps:
s1, obtaining the stripping speed value of a release film to be tested, namely 10000mm/min; test of the quality of the silicone base paper in reference to FINAT test method, using TESA7475 standard adhesive tape: testing conditions under the method of testing release force the silicone oil release film D is tested for release force under 300mm/min, 600mm/min, 1200mm/min, 1800mm/min, 2400mm/min, 3600mm/min and 4800mm/min, and the release force results are respectively 8.4g/25mm (300 mm/min), 11.6g/25mm (600 mm/min), 16.9g/25mm (1200 mm/min), 23.4g/25mm (1800 mm/min), 30.6g/25mm (2400 mm/min), 46.4g/25mm (3600 mm/min) and 78.3g/25mm (4800 mm/min) according to different peeling speed values and different peeling force valuesEstablishing a mathematical model for correlating the stripping speed and the stripping force of the silicone oil release film D according to different corresponding stripping force values to obtain a mathematical model F =8.8247 × e 0.0005v Coefficient of correlation R 2 =0.9781, f denotes the estimated release force value, v is the peel speed value;
s2, inputting a stripping speed value of 10000mm/min into a mathematical model linear function F =8.8247 × e for correlating the stripping speed and the stripping force of the silicone oil release film D 0.0005v Obtaining the estimated release force value of the release film participating in the test of 1309.70g/25mm;
s3, comparing the estimated release force value of 1309.70g/25mm with the preset release force value range of 100-110 g/25mm of the release film to be tested;
and S4, based on the comparison result of S3, estimating that the release force value of 1309.70g/25mm does not belong to the preset release force value range of 100-110 g/25mm, and judging that the tested release film is unqualified.
In this embodiment, according to the test method in S1, actually measured release force values at release speed values of 400mm/min, 1600mm/min and 4000mm/min, respectively 10.8g/25mm (400 mm/min), 19.5g/25mm (1600 mm/min) and 65.3g/25mm (4000 mm/min), are further applied to the silicone oil release film D, and the linear functions F =8.8247 × e of the mathematical model are substituted for 400mm/min, 1600mm/min and 4000mm/min 0.0005v In the method, the obtained estimated release force values are respectively 10.8g/25mm (400 mm/min), 19.6g/25mm (1600 mm/min) and 65.2g/25mm (4000 mm/min), and the estimated release force value is compared with the actually measured release force value, so that the estimated release force value is very close to the actually measured release force value, and therefore the evaluation method in the scheme has high accuracy.
As can be seen from the evaluation method of the peeling and releasing force of the release film in this embodiment, the silicone oil release film D used in this embodiment does not meet the demand of the release force of the customer at the actual peeling speed, and is not selectable. The silicone oil release film D is used in the actual production line of a customer, and the problems of reverse release, tearing and breaking of a product containing the release film or breakage of the release film occur.
As can be seen from the above embodiments 1 to 4, the evaluation method for the peeling and releasing force of the release film in the present scheme can effectively help a customer select a release film suitable for actual use and peeling requirements, and when the trial release films in the embodiments 1 to 4 are applied to an actual production line of the customer, the silicone oil release film a in the embodiment 1 does not have the problem of reverse release or tearing and breaking of a product containing the release film or breakage of the release film, while the silicone oil release film B, the silicone oil release film C, and the silicone oil release film D have the above problems, so that the evaluation method for the peeling and releasing force of the release film in the present scheme can be obtained from the result of the actual production line, and has a great practical significance.
Example 5
In the embodiment, an evaluation system for peeling and releasing force of the release film is adopted to judge whether the release film to be tested meets the actual requirements of customers, in the embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the releasing force is 100-110 g/25mm, 10000mm/min is taken as the peeling speed value of the release film to be tested, and 100-110 g/25mm is taken as the value range of the preset releasing force.
The release film used for establishing the mathematical model correlating the peeling speed and the release force of the release film in this embodiment is the silicone oil release film a consistent with embodiment 1. In this embodiment, the reference release film is also the silicone release film a, and in other embodiments, the reference release film may also be a silicone release film different from the silicone release film a.
The reference release film used in this example was the silicone oil release film a consistent with example 1, and the mathematical model correlating the peeling speed and the release force of the release film used was consistent with example 1. In this embodiment, the reference release film is consistent with the release film establishing the mathematical model of the peeling speed and the releasing force of the associated release film, and in other specific embodiments, the reference release film may also be inconsistent with the release film establishing the mathematical model of the peeling speed and the releasing force of the associated release film.
The evaluation system for the peeling and releasing force of the release film adopted by the embodiment comprises a test module, an input module, an operation module and a judgment module, and the steps of judging whether the release film to be tested meets the actual requirements of customers or not by utilizing the evaluation system are as follows:
obtaining the stripping speed value of the release film to be tested by using a test module, wherein the stripping speed value is 10000mm/min;
inputting the stripping speed value 10000mm/min of the reference release film into a mathematical model F =0.0103v +4.4132 correlating the stripping speed and the release force of the release film by using an input module;
substituting the stripping speed value of 10000mm/min into the mathematical model F =0.0103v +4.4132 by using an operation module to calculate the estimated release force value of the release film to be tested, and obtaining the estimated release force value of 107.41g/25mm;
and comparing the estimated release force value of 107.41g/25mm with a preset release force value range of 100-110 g/25mm for the release film to be tested by using a judging module, obtaining that the value of 107.41g/25mm is in the range of 100-110 g/25mm, and judging that the release film to be tested is qualified.
In the above test module, the test module may be further used to directly test the release force of the release film under different release speeds, and obtain different release speed values of the release film under test and corresponding different release force values to establish a mathematical model relating the release speed and the release force of the release film under test, where the corresponding situation may be the situation that the release film under test and the release film establishing the mathematical model are consistent in this embodiment.
Therefore, under the evaluation system, the silicone oil release film A can meet the requirements of customers that the actual peeling speed is 10000mm/min and the release force is 100-110 g/25 mm.
Example 6
In this embodiment, an evaluation system for the peeling and release force of the release film is adopted to judge whether the tested release film meets the actual requirements of customers, in this embodiment, the actual use peeling speed of the release film required by the customers is 10000mm/min, the release force is 100-110 g/25mm, 10000mm/min is used as the peeling speed value of the tested release film, and 100-110 g/25mm is used as the preset value range of the release force.
The release film used for establishing the mathematical model correlating the peeling speed and the releasing force of the release film in the embodiment is the silicone oil release film B consistent with the embodiment 1. In this embodiment, the reference release film is also the silicone release film B, and in other specific embodiments, the reference release film may also be a silicone release film different from the silicone release film B.
The evaluation system for the peeling and releasing force of the release film adopted by the embodiment comprises a test module, an input module, an operation module and a judgment module, and the steps of judging whether the release film to be tested meets the actual requirements of customers or not by utilizing the evaluation system are as follows:
obtaining the stripping speed value of the release film to be tested by using a test module, wherein the stripping speed value is 10000mm/min;
inputting the peeling speed value 10000mm/min of the release film to be tested into a mathematical model F =8.1367 × e correlating the peeling speed and the release force of the release film by using an input module 0.0005v ；
Substituting 10000mm/min stripping speed value into a mathematical model F =8.1367 × e by using an operation module 0.0005v Calculating the estimated release force value of the release film to obtain an estimated release value of 1207.59g/25mm;
and comparing the estimated release force value 1207.59g/25mm with a preset release force value range 100-110 g/25mm for the test-participating release film by using a judging module, and judging that the test-participating release film is unqualified if the 1207.59g/25mm is not in the range of 100-110 g/25 mm.
In the test module, the test module can also be used to directly test the release force of the release film under different release speeds, and obtain different release speed values and corresponding different release force values to establish a mathematical model correlating the release speed and the release force of the release film under test, and the corresponding situation can be the condition that the release film under test and the release film establishing the mathematical model are consistent in this embodiment.
Therefore, under the evaluation system, the silicone oil release film B can be obtained, which does not meet the requirements of customers that the actual peeling speed is 10000mm/min and the release force is 100-110 g/25 mm.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A method for evaluating the peeling force of a release film is characterized by comprising the following steps:
s1, obtaining a stripping speed value of a release film to be tested;
and S2, inputting the peeling speed value into a mathematical model correlating the peeling speed and the releasing force of the release film to obtain an estimated releasing force value of the release film participating in the test.
2. The method for evaluating the peel force of a release film according to claim 1, further comprising:
s3, comparing the estimated release force value with a preset release force value range for the release film to be tested;
and S4, based on the comparison result of the S3, when the estimated release force value belongs to the preset release force value range, judging that the referenced release film is qualified, and when the estimated release force value does not belong to the preset release force value range, judging that the referenced release film is unqualified.
3. The method for evaluating the peel force of a release film according to claim 1, wherein: the mathematical model is selected from a linear functional relationship or an exponential functional relationship.
4. The method for evaluating the peel force of a release film according to claim 3, wherein: the linear function relationship is F = a × v + b, where F denotes the estimated release force value, v denotes the peel speed value, a denotes a constant term, and b denotes a constant term.
5. The method for evaluating the peel force of a release film according to claim 3, wherein: the exponential function relationship is F = x × y z×v Wherein F represents the estimated release force value, v represents the peel speed value, x represents a constant term, y represents a constant term, and z represents a constant term.
6. The release film peeling release of claim 5A method for evaluating force, characterized by: in the exponential function relationship, y is a natural constant e, and the exponential function relationship is F = x × e z×v 。
7. The method for evaluating the peeling force of the release film according to claim 1, wherein the peeling speed value is obtained by: and (3) adhering a TESA7475 standard adhesive tape to the release film, and peeling the TESA7475 standard adhesive tape at a peeling angle of 180 degrees to obtain the peeling force speed value in an environment with the relative humidity of 50% +/-5% and the temperature of 23 +/-2 ℃.
8. The method for evaluating the peel release force of a release film according to any one of claims 1 to 7, wherein: the release film suitable for the evaluation method is a silicone oil release film.
9. The method for evaluating the peel force of a release film according to claim 8, wherein: the release film to which the evaluation method is applied has a thickness of 25 to 150 μm.
10. An evaluation system for peel force of a release film, the evaluation system comprising:
the input module is used for inputting the peeling speed value of the reference release film into a mathematical model which is related to the peeling speed and the release force of the release film;
and the operation module is used for calculating the estimated release force value of the release film participating in the test by using the mathematical model.
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| CN202211008339.7A CN115329585A (en) | 2022-08-22 | 2022-08-22 | Method for evaluating stripping force of release film |
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