CN104155334A - Device for testing shrinking percentage through hot air - Google Patents
Device for testing shrinking percentage through hot air Download PDFInfo
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- CN104155334A CN104155334A CN201410436758.XA CN201410436758A CN104155334A CN 104155334 A CN104155334 A CN 104155334A CN 201410436758 A CN201410436758 A CN 201410436758A CN 104155334 A CN104155334 A CN 104155334A
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- guide duct
- shrinkage factor
- hot air
- hot blast
- shrink film
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Abstract
The invention relates to the technical field of testing devices, particularly to a device for testing shrinking percentage through hot air. The device comprises a working table, a hot air device, an air guide pipe, and a clamping device which is used for fixing a shrinking film, wherein the hot air device and the air guide pipe are successively fixed at the top of the working table, and one end of the air guide pipe corresponds to the air outlet of the hot air device; the device further comprises a hot air circulating device which is arranged at the outer side of the air guide pipe, an air inlet of the hot air circulating device is communicated with the other end of the air guide pipe, an air outlet of the hot air circulating device is communicated with the hot air device, and the clamping device can be connected into the air guide pipe in a dismountable way, and is positioned at the connection position of the other end of the air guide pipe and the air inlet of the hot air circulating device. The device disclosed by the invention is used for testing the shrinking percentage of the shrinking film, the actual service environment of the shrinking film can be simulated, the testing result is close to the service effects, the testing accuracy is high, and the testing precision of the shrinking percentage of the shrinking film is greatly improved.
Description
Technical field
The present invention relates to proving installation technical field, relate in particular to a kind of device of hot blast test shrinkage factor.
Background technology
Shrink film is a kind of orientation that is stretched in process of production, and the thermoplastic film who is in use subject to thermal shrinkage.The heat-shrinkable of film just obtained application as far back as 1936, mainly with rubber film, take the putrefactive food of shrink wrapping at first.Nowadays, heat shrinkage techniques has developed into almost can pack extensive stock with shrink film, as food, medicine, sterilizing dinnerware, stationery sports goods, process gift, printed matter, five metals plastic products, telephone set, the external packing of the various products of electronic apparatus etc., especially aspect combined type (boundling) packing of anomalistic object article or commodity, the protection against the tide that can meet commodity is dustproof, touch-proof, the functions such as transparent display, can increase product appearance attractive force again, also can be used for replacing all kinds of cartons, not only save packing cost, and meet packing trend, these products all bring great convenience to people's life.
Shrinkage factor is an important test index of shrink film, at present, is: first will shrink film bubble in liquid, then the shrink film after immersion is tested to its shrinkage factor for the method for testing of shrink film shrinkage factor.This measuring accuracy is poor, and the result of test cannot instruct actual use, and not yet has the proving installation of testing specially shrinkage factor for shrink film, and therefore researching and developing a kind of measuring accuracy shrink film shrinkage factor proving installation high, simple in structure seems particularly important.
Summary of the invention
The object of the invention is to provide for the deficiencies in the prior art a kind of proving installation of testing measuring accuracy, hot blast test shrinkage factor simple in structure.
To achieve these goals, the present invention adopts following technical scheme: a kind of device of hot blast test shrinkage factor, comprise worktable, hot air apparatus, guide duct and for the fixing clamping device of shrink film, hot air apparatus and guide duct are fixed on the top of worktable successively, and one end of guide duct is corresponding with the air outlet of hot air apparatus; Also comprise the heated air circulation device that is arranged at described guide duct outside, the air inlet of heated air circulation device is communicated with the other end of described guide duct, the air outlet of heated air circulation device is communicated with described hot air apparatus, and clamping device is removably connected in guide duct and is positioned at the junction of the other end of guide duct and the air inlet of heated air circulation device.
Further, also comprise the heated air circulation device that is arranged at described guide duct outside, the air inlet of heated air circulation device is communicated with the other end of described guide duct, and the air outlet of heated air circulation device is communicated with described hot air apparatus.
Being provided for of heated air circulation device reclaimed the hot blast after test, then is delivered to hot air apparatus, recycling.
Further, the top of described guide duct offers breach, and in guide duct, the position of corresponding breach is provided with slot, and described clamping device is plugged in slot.
Described clamping device top is fixed with the convenient Handheld Division capturing, and shrink film is fixed on the middle part of clamping device, and the present invention can also adopt other mode removably connecting that clamping device is removably connected in guide duct.
Further, the madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 40-60cm.
Being provided for of temperature probe tested the temperature of hot blast in guide duct timely adjustment to temperature required, in order to make the temperature of test more accurate, distance between adjacent two temperature probes is controlled at 40-60cm, for making the present invention reach best result of use, the distance between adjacent two temperature probes is controlled at 50cm.
Further, described shrink film is square, and its length of side is 8-12cm, and the length of described guide duct is 1-3m, and the internal diameter of guide duct is 25-35cm.
When shrink film is square, the measurement of the distortion size after convenient shrink film test, its length of side is unsuitable excessive, crossing conference needs high equipment cost, is inconvenient to test, and its length of side is also unsuitable too small, too small meeting causes measuring accuracy bad, when its length of side is 8-12cm, equipment cost is low, and measuring accuracy is high.
The length of guide duct is unsuitable long, the long wind speed that can affect hot blast, and when the length of guide duct is 1-3m, wind speed stability is better.In order to make the air outlet of guide duct cover shrink film completely, the internal diameter of guide duct must be greater than the length of side of shrink film, and when the internal diameter of guide duct is 25-35cm, measuring accuracy is high, good stability.For making the present invention reach best result of use, described shrink film is square, and its length of side is 10cm, and the length of described guide duct is 2m, and the internal diameter of guide duct is 30cm.
Further, described hot air apparatus comprises blowing device and the heating arrangement that is fixed on successively bench-top, and heating arrangement is electrically connected with frequency converter.
Blowing device can be fan; heating arrangement can be resistance wire; blowing device is for generation of wind; heating arrangement is used to form hot blast; frequency converter is for the temperature of regulating resistance silk heating; hot air apparatus of the present invention can also can produce the hot air apparatus of hot blast for other, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Further, the temperature of described heating arrangement is 120-200 ℃.
The too high or too low for temperature of heating arrangement all can affect measuring accuracy, and when the temperature of heating arrangement is 120-200 ℃, the precision of test is high, and precision is high.For making the present invention reach best result of use, the temperature of described heating arrangement is 160 ℃.
Further, the wind speed of described blowing device blowing is 6-12m/s.
Stability and the measuring accuracy of the air speed influence test of blowing device blowing, when the wind speed of blowing device blowing is 6-12m/s, the precision of test is high, good stability.For making the present invention reach best result of use, the wind speed of described blowing device blowing is 9m/s.
Beneficial effect of the present invention is: when the present invention uses, the shrink film that shrink film is to be tested is arranged on clamping device; Regulate the wind speed of blowing device blowing and the temperature of heating arrangement, shrink film to be tested is carried out to hot blast test; The deformation ruler little progress row of the shrink film after test is measured, judged that whether the shrinkage factor of shrink film is qualified.Concrete, getting the sample that is of a size of 100 ﹡ 100mm tests, shrink film after test is measured, record and be of a size of L, by shrinkage factor formula δ=(100-L)/100, calculate shrinkage factor δ, the shrinkage factor δ of calculating and standard value are compared, thereby judge that whether the shrinkage factor of shrink film is qualified.
The shrinkage factor of device of the present invention for testing shrink film, can simulate the practical service environment of shrink film, test result is pressed close to result of use, testing precision is high, solve measuring accuracy result poor, test in prior art and cannot instruct the problem of actual use, greatly improved the measuring accuracy of shrink film shrinkage factor.The present invention adopts heated air circulation device, the hot blast after test can be reclaimed, then be delivered to hot air apparatus, recycling.Device to test precision of the present invention is high, simple in structure, easy to use, practical.
accompanying drawing explanation:
Fig. 1 is front view of the present invention.
Fig. 2 is the enlarged diagram of A part in Fig. 1.
Fig. 3 is vertical view of the present invention.
Fig. 4 is the enlarged diagram of B part in Fig. 3.
Fig. 5 is the perspective view of clamping device of the present invention.
Reference numeral is: 1-worktable, 2-hot air apparatus, 21-blowing device, 22-heating arrangement, 3-guide duct, 30-breach, 31-slot, 4-clamping device, 40-shrink film, 5-heated air circulation device, 6-temperature probe.
embodiment:
For the ease of those skilled in the art's understanding, below in conjunction with embodiment and accompanying drawing 1-5, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Embodiment 1
See Fig. 1-5, a kind of device of hot blast test shrinkage factor, comprise worktable 1, hot air apparatus 2, guide duct 3 and for the fixing clamping device 4 of shrink film 40, hot air apparatus 2 and guide duct 3 are fixed on the top of worktable 1 successively, one end of guide duct 3 is corresponding with the air outlet of hot air apparatus 2; Also comprise the heated air circulation device 5 that is arranged at described guide duct 3 outsides, the air inlet of heated air circulation device 5 is communicated with the other end of described guide duct 3, the air outlet of heated air circulation device 5 is communicated with described hot air apparatus 2, and clamping device 4 is removably connected in guide duct 3 and is positioned at the junction of the other end of guide duct 3 and the air inlet of heated air circulation device 5.
In the present embodiment, the top of described guide duct 3 offers breach 30, and the position of the interior corresponding breach 30 of guide duct 3 is provided with slot 31, and described clamping device 4 is plugged in slot 31.
In the present embodiment, the madial wall of described guide duct 3 is arranged at intervals with a plurality of temperature probes 6 successively, and the distance between adjacent two temperature probes 6 is 40cm.
In the present embodiment, described shrink film 40 is square, and its length of side is 8cm, and the length of described guide duct 3 is 1m, and the internal diameter of guide duct 3 is 25cm.
In the present embodiment, described hot air apparatus 2 comprises blowing device 21 and the heating arrangement 22 that is fixed on successively worktable 1 top, and heating arrangement 22 is electrically connected with frequency converter.
In the present embodiment, the temperature of described heating arrangement 22 is 120 ℃; The wind speed of described blowing device 21 blowings is 6m/s.
Embodiment 2
The difference of the present embodiment and above-described embodiment 1 is: in described step B, the wind speed of blowing device blowing is 9m/s; The temperature of heating arrangement is 140 ℃; Test duration is 14s.
The madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 45cm.
Described shrink film is square, and its length of side is 9cm, and the length of described guide duct is 1.5m, and the internal diameter of guide duct is 28cm.
The temperature of described heating arrangement is 140 ℃; The wind speed of described blowing device blowing is 9m/s.
Embodiment 3
The difference of the present embodiment and above-described embodiment 1 is: in described step B, the wind speed of blowing device blowing is 10m/s; The temperature of heating arrangement is 160 ℃; Test duration is 16s.
The madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 50cm.
Described shrink film is square, and its length of side is 10cm, and the length of described guide duct is 2m, and the internal diameter of guide duct is 30cm.
The temperature of described heating arrangement is 160 ℃; The wind speed of described blowing device blowing is 10m/s.
Embodiment 4
The difference of the present embodiment and above-described embodiment 1 is: in described step B, the wind speed of blowing device blowing is 11m/s; The temperature of heating arrangement is 180 ℃; Test duration is 18s.
The madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 55cm.
Described shrink film is square, and its length of side is 11cm, and the length of described guide duct is 2.5m, and the internal diameter of guide duct is 32cm.
The temperature of described heating arrangement is 180 ℃; The wind speed of described blowing device blowing is 11m/s.
Embodiment 5
The difference of the present embodiment and above-described embodiment 1 is: in described step B, the wind speed of blowing device blowing is 12m/s; The temperature of heating arrangement is 200 ℃; Test duration is 21s.
The madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 60cm.
Described shrink film is square, and its length of side is 12cm, and the length of described guide duct is 3m, and the internal diameter of guide duct is 35cm.
The temperature of described heating arrangement is 200 ℃; The wind speed of described blowing device blowing is 12m/s.
When the present invention uses, the shrink film 40 that shrink film 40 is to be tested is arranged on clamping device 4, and the clamping device 4 that shrink film 40 is housed is inserted in guide duct 3; Regulate the wind speed of blowing device 21 blowings and the temperature of heating arrangement 22, shrink film to be tested 40 is carried out to hot blast test; The deformation ruler little progress row of the shrink film 40 after test is measured, judged that whether the shrinkage factor of shrink film 40 is qualified.Concrete, getting the sample that is of a size of 100 ﹡ 100mm tests, shrink film after test is measured, record and be of a size of L, by shrinkage factor formula δ=(100-L)/100, calculate shrinkage factor δ, the shrinkage factor δ of calculating and standard value are compared, thereby judge that whether the shrinkage factor of shrink film is qualified.
The shrinkage factor of device of the present invention for testing shrink film, can simulate the practical service environment of shrink film, test result is pressed close to result of use, testing precision is high, solved in prior art measuring accuracy poor, the result of test cannot instruct the problem of actual use, has greatly improved the measuring accuracy of shrink film shrinkage factor.Device to test precision of the present invention is high, simple in structure, easy to use, practical.
Above-described embodiment is preferably implementation of the present invention, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a hot blast is tested the device of shrinkage factor, it is characterized in that: comprise worktable, hot air apparatus, guide duct and for the fixing clamping device of shrink film, hot air apparatus and guide duct are fixed on the top of worktable successively, and one end of guide duct is corresponding with the air outlet of hot air apparatus; Also comprise the heated air circulation device that is arranged at described guide duct outside, the air inlet of heated air circulation device is communicated with the other end of described guide duct, the air outlet of heated air circulation device is communicated with described hot air apparatus, and clamping device is removably connected in guide duct and is positioned at the junction of the other end of guide duct and the air inlet of heated air circulation device.
2. the device of a kind of hot blast test shrinkage factor according to claim 1, is characterized in that: the top of described guide duct offers breach, and in guide duct, the position of corresponding breach is provided with slot, and described clamping device is plugged in slot.
3. the device of a kind of hot blast test shrinkage factor according to claim 1, is characterized in that: the madial wall of described guide duct is arranged at intervals with a plurality of temperature probes successively, and the distance between adjacent two temperature probes is 40-60cm.
4. the device of a kind of hot blast test shrinkage factor according to claim 1, is characterized in that: described shrink film is square, and its length of side is 8-12cm, and the length of described guide duct is 1-3m, and the internal diameter of guide duct is 25-35cm.
5. the device of a kind of hot blast test shrinkage factor according to claim 1, is characterized in that: described shrink film is square, and its length of side is 10cm, and the length of described guide duct is 2m, and the internal diameter of guide duct is 30cm.
6. the device of a kind of hot blast test shrinkage factor according to claim 1, is characterized in that: described hot air apparatus comprises blowing device and the heating arrangement that is fixed on successively bench-top, and heating arrangement is electrically connected with frequency converter.
7. the device of a kind of hot blast test shrinkage factor according to claim 6, is characterized in that: the temperature of described heating arrangement is 120-200 ℃.
8. the device of a kind of hot blast test shrinkage factor according to claim 6, is characterized in that: the temperature of described heating arrangement is 160 ℃.
9. the device of a kind of hot blast test shrinkage factor according to claim 6, is characterized in that: the wind speed of described blowing device blowing is 6-12m/s.
10. the device of a kind of hot blast test shrinkage factor according to claim 6, is characterized in that: the wind speed of described blowing device blowing is 9m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436758.XA CN104155334B (en) | 2014-08-29 | 2014-08-29 | A kind of device of hot blast test shrinkage factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436758.XA CN104155334B (en) | 2014-08-29 | 2014-08-29 | A kind of device of hot blast test shrinkage factor |
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| CN104155334A true CN104155334A (en) | 2014-11-19 |
| CN104155334B CN104155334B (en) | 2016-11-30 |
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| CN201410436758.XA Active CN104155334B (en) | 2014-08-29 | 2014-08-29 | A kind of device of hot blast test shrinkage factor |
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Cited By (3)
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| CN104198523A (en) * | 2014-08-29 | 2014-12-10 | 东莞市正新包装制品有限公司 | Method and device for testing shrink rate through hot air |
| CN107209168A (en) * | 2015-02-27 | 2017-09-26 | 陶氏环球技术有限责任公司 | For the method and system for the power for measuring shrink film |
| CN108445037A (en) * | 2018-01-23 | 2018-08-24 | 上海恩捷新材料科技股份有限公司 | A kind of test method of stress in thin films |
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Cited By (4)
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| CN104198523A (en) * | 2014-08-29 | 2014-12-10 | 东莞市正新包装制品有限公司 | Method and device for testing shrink rate through hot air |
| CN104198523B (en) * | 2014-08-29 | 2017-01-25 | 东莞市正新包装制品有限公司 | Method and device for testing shrink rate through hot air |
| CN107209168A (en) * | 2015-02-27 | 2017-09-26 | 陶氏环球技术有限责任公司 | For the method and system for the power for measuring shrink film |
| CN108445037A (en) * | 2018-01-23 | 2018-08-24 | 上海恩捷新材料科技股份有限公司 | A kind of test method of stress in thin films |
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| CN104155334B (en) | 2016-11-30 |
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