CN106248503A - A kind of method testing aluminum plastic film folding resistance - Google Patents

Abstract

The invention provides a kind of method testing aluminum plastic film folding resistance, it is characterised in that comprise the following steps: the first step, making test sample；Second step, one group of test sample is clipped on folding tester；3rd step, folding test；4th step, current test sample is launched, be placed on to send and on the equipment of daylight lamp, checked whether broken hole, if there being broken hole, then lowering folding number, entering the 5th step, if there is no broken hole, then entering the 5th step after raising folding number；5th step, next group after test sample is clipped on folding tester, is returned the 3rd step, until completing the test of all test samples；6th step, maximum folding number broken hole do not occur is defined as folding value.The present invention has single test, automatically test, simple to operate, without externality factor, the advantage such as reproducible, folding value scope is little.

Description

A kind of method testing aluminum plastic film folding resistance

Technical field

The present invention relates to the method for testing of a kind of aluminum plastic film folding resistance.

Background technology

Aluminum plastic film is widely used in battery industry at present, acts on key in the battery, and prescription is high, it is desirable to it has pole High barrier, deep drawing quality, electrolyte resistance stability, folding resistance etc..One of them link at production battery is exactly by battery Side sealing doubling, this is accomplished by aluminum plastic film a good folding resistance, and often the aluminum plastic film of folding resistance difference there will be that angle is broken or crack Phenomenon, ultimately results in battery and scraps.At present, the basic method using manual test folding in industry, basic step is: by sample Being cut into about 100mm length, batten wide for 15mm, doubling, first estimate a folding number, two handss respectively hold batten one end, same One place, two handss all are folded back to estimate number of times with 90 degree, open, checked whether broken hole facing to daylight lamp, as do not occurred Broken hole, continues folding checked whether broken hole again 1 time to rolling batten well, and till there is broken hole, definition does not occurs that broken hole is Big number of times is folding value.Using same method 10 battens of test, final experiment show that folding value is about at 5-20 time.Manually survey Examination folding weak point: two handss firmly cannot keep consistent, and folding angle cannot ensure that unanimously resistance to break cannot ensure same On individual point, opening batten, to continue folding relatively big on the impact of batten, and folding value scope is big, poor repeatability, ultimately results in and cannot sentence Break the difference between material.

Summary of the invention

It is an object of the invention to provide a kind of method automatically carrying out aluminum plastic film folding test.

In order to achieve the above object, the technical scheme is that and provide a kind of method testing aluminum plastic film folding resistance, It is characterized in that, comprise the following steps:

The first step, make test sample: aluminum plastic film to be tested is cut into length 150mm-200mm, width 13mm-17mm Batten 40-80 bar, flattens by all batten doublings and with pressure roller, obtains 2-4 group test sample, (often group 20)；

Second step, one group of test sample is clipped on folding tester one by one；

3rd step, folding test: on folding tester, set folding number 11-14 time, in fixing speed Under conditions of 150-180rpm, gravity 4.9N and swing angle 135 ± 5 DEG C, current test sample is complete on folding tester Become folding test；

4th step, previous group test sample will be worked as launch, and be placed on to send and on the equipment of daylight lamp, checked whether broken hole, if There is broken hole, then lower folding number, enter the 5th step, if there is no broken hole, then entering the 5th step after raising folding number；

5th step, next group after test sample is clipped on folding tester, is returned the 3rd step, until completing all surveys The test of test agent；

6th step, maximum folding number broken hole do not occur is defined as folding value.

The present invention has single test, automatically test, simple to operate, without externality factor, reproducible, folding value model Enclose the advantages such as little.

Accompanying drawing explanation

The structural representation of the folding tester used in Fig. 1 present invention, in figure, 1 is on and off switch, and 2 is counting Device, 3 is number of times configuration part, and 4 is shutdown switch, and 5 is upper grip, and 6 is test sample, and 7 is lower chuck, and 8 is counterweight, and 9 is slide block.

Detailed description of the invention

For making the present invention become apparent, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.

Following example all use folding tester as shown in Figure 1, wherein, upper grip 5 be a right and left all With little radian and middle reeded fan-shaped chuck, the radius of curvature R=0.38mm of little radian, radius of curvature is too big, plastic-aluminum Film is not allowed easy to break broken, and radius of curvature is the least, and aluminum plastic film the most easily folding is broken, and intermediate groove width 300um should be slightly larger than surveyed aluminum The twice of plastic film thickness, otherwise folder is not entered upper grip by sample, so selecting suitable radius of curvature and intermediate groove width to show Must be even more important.

In following example, aluminum plastic film structure is PA/AL/CPP.

Embodiment 1

The folding of aluminum plastic film-88 type, version is: PA15 micron/AL35 micron/CPP35 micron, testing procedure is such as Under:

Step one: sample preparation, along the batten about 60 of film transversely or longitudinally cutting about 15mm wide * 150mm length, towards CPP face Doubling, flattens with pressure roller.

Step 2: folding instrument is started shooting, and switches on power, presses on and off switch 1, opens equipment.

Step 3: folding number adjusts, and speed counter knob is threaded to " 0 ".Pressing " ON " key, number of times display screen is bright.By " SET " Start setting up, by enumerator 2 left triangle moving decimal point position, press " CLR " key, adjust the numeral of this arithmetic point front position extremely 12.After again press " SET " key, number of times preserves.

Step 4: sandwich sample, keeps slide block 9 to block counterweight, unclamps upper and lower fastening bolt, first test sample 6 sandwiched In upper grip 5, then sandwich in lower chuck 7, meeting deformation effect folding value during because being sandwiched in upper grip in view of sample, so will Sample up carries about 5mm, then fastens upper bolt, after stretching sample, fastens lower bolt.

Step 5: start test.Removing slide block 9, speed counter 3 speed is adjusted to 160rpm, upper grip 5 starts automatic left and right Wave each 135 DEG C.

Step 6: off-test, after sample waves 12 times under counterweight 8 gravity of 4.9N, equipment can send ring sound, The when of recentering Deng upper grip 5, press shutdown switch 4, retract slide block 9, unclamp upper and lower fastening bolt, take out sample Product.

Step 7: observation platform selects, it is contemplated that operation convenience, selects existing equipment Stereo microscope, if light is too Dazzling, can be with clip one small pieces film, center cuts out the hole that a diameter is about about 5mm, is fixed on observation platform.

Step 8: observe, judge, by being launched by the sample after rolling over, is placed at Stereo microscope measuring platform hole by break, Whether perusal has light to pass through, if there being light to pass through, is then had broken hole by folding, shows that the folding number of this sample reaches not To 12 times.

Step 9: continue test, be set as by enumerator 11 times, tests 20 battens with step 4 to step 8, as all Not broken then definition is for 11 times the folding value of this sample.

Step 10: shutdown, all samples test is complete, closes instrument switch, closes hull closure.

Embodiment 2

The folding of aluminum plastic film-113 type, version is: PA25 micron/AL40 micron/CPP45 micron, testing procedure is such as Under:

Step one: sample preparation, along the batten about 60 of film transversely or longitudinally cutting about 15mm wide * 150mm length, towards CPP face Doubling, flattens with pressure roller.

Step 2: folding instrument is started shooting, and switches on power, presses on and off switch 1, opens equipment.

Step 3: folding number adjusts, and speed counter knob is threaded to " 0 ".Pressing " ON " key, number of times display screen is bright.By " SET " Start setting up, by enumerator 2 left triangle moving decimal point position, press " CLR " key, adjust the numeral of this arithmetic point front position extremely 13.After again press " SET " key, number of times preserves.

Step 4: sandwich sample, keeps slide block 9 to block counterweight, unclamps upper and lower fastening bolt, first test sample 6 sandwiched In upper grip 5, then sandwich in lower chuck 7, meeting deformation effect folding value during because being sandwiched in upper grip in view of sample, so will Sample up carries about 5mm, then fastens upper bolt, after stretching sample, fastens lower bolt.

Step 5: starting test, remove slide block 9, speed counter 3 speed is adjusted to 160rpm, upper grip 5 starts automatic left and right Wave each 135 DEG C.

Step 6: off-test, after sample waves 13 times under counterweight 8 gravity of 4.9N, equipment can send ring sound, The when of recentering Deng upper grip 5, press shutdown switch 4, retract slide block 9, unclamp upper and lower fastening bolt, take out sample Product.

Step 7: observation platform selects, it is contemplated that operation convenience, selects existing equipment Stereo microscope, if light is too Dazzling, can be with clip one small pieces film, center cuts out the hole that a diameter is about about 5mm, is fixed on observation platform.

Step 8: observe, judge, by being launched by the batten after rolling over, is placed at Stereo microscope measuring platform hole by break, Whether perusal has light to pass through, if there being light to pass through, is then had broken hole by folding, shows that the folding number of this batten reaches not To 13 times.

Step 9: continue test, be set as by enumerator 12 times, tests 20 battens with step 4 to step 8, as all Not broken then definition is for 12 times the folding value of this sample.

Step 10: shutdown, all samples test is complete, closes instrument switch, closes hull closure.

This method is applicable not only to aluminum plastic film, it is possible to be applicable to the folding test of bent monofilm or composite membrane.

Claims (1)

1. the method testing aluminum plastic film folding resistance, it is characterised in that comprise the following steps:

The first step, making test sample: aluminum plastic film to be tested is cut into length 150mm-200mm, the batten of width 13mm-17mm 40-80 bar, flattens by all batten doublings and with pressure roller, obtains 2-4 group test sample, often group 20；

Second step, one group of test sample is clipped on folding tester one by one；

3rd step, folding test: on folding tester, set folding number 11-14 time, in fixing speed 150- Under conditions of 180rpm, gravity 4.9N and swing angle 135 ± 5 DEG C, current test sample completes resistance on folding tester Folding test；

4th step, previous group test sample will be worked as launch, and be placed on to send and checked whether broken hole on the equipment of daylight lamp, if having broken Hole, then lower folding number, enters the 5th step, if not having broken hole, then enters the 5th step after raising folding number；

5th step, next group after test sample is clipped on folding tester, is returned the 3rd step, until completing all test specimens The test of product；

6th step, maximum folding number broken hole do not occur is defined as folding value.