CN219784817U - Sealing device for plastic total migration test - Google Patents
Sealing device for plastic total migration test Download PDFInfo
- Publication number
- CN219784817U CN219784817U CN202321067972.3U CN202321067972U CN219784817U CN 219784817 U CN219784817 U CN 219784817U CN 202321067972 U CN202321067972 U CN 202321067972U CN 219784817 U CN219784817 U CN 219784817U
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- China
- Prior art keywords
- clamping plate
- clamping
- sealing device
- bag
- plastic
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- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 239000004033 plastic Substances 0.000 title claims abstract description 21
- 238000013508 migration Methods 0.000 title claims abstract description 18
- 230000005012 migration Effects 0.000 title claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 12
- 230000004308 accommodation Effects 0.000 claims description 19
- 238000005192 partition Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a sealing device for a plastic full migration test, which comprises a bag mouth sealing clamp, wherein the bag mouth sealing clamp comprises a first clamping plate and a second clamping plate which are clamped mutually; the clamping surfaces of the first clamping plate and the second clamping plate form a through hole for accommodating the thermometer; the first clamping plate and the second clamping plate comprise a clamping surface layer and an elastic inner layer from outside to inside. The sealing device for the plastic full-migration test is reasonable in structure, the sample bag is clamped between the first clamping plate and the second clamping plate, and through the clamping surfaces of the first clamping plate and the second clamping plate, a through hole for accommodating the thermometer is formed, so that the thermometer for testing the temperature of an analog in the sample bag is fixed, and on the other hand, a gap and an opening gap caused by the fact that the thermometer penetrates through the sample bag are sealed; the first clamping plate and the second clamping plate comprise a clamping surface layer and an elastic inner layer from outside to inside, and the clamping surface layer improves the clamping strength; the elastic inner layer is deformed under pressure, so that the friction force between the elastic inner layer and the sample bag is improved, the falling off is prevented, and the sealing effect of the bag opening is further improved.
Description
Technical Field
The utility model relates to the technical field of test devices, in particular to a sealing device for a plastic total migration test.
Background
People pay more and more attention to the food packaging safety problem. The packaging industry is particularly concerned with food grade packaging materials that require full migration testing, using bagging methods.
Firstly, heating or pressure sealing the plastic film to be detected to obtain a total food contact area of not less than 1dm 2 The specification of the conventional sample bag is 10cm by 10cm or 12cm by 12cm; cutting one corner of the sample bag, and filling a simulant into the sample bag, wherein the simulant is one of distilled water, 3% acetic acid, 10% ethanol and beverage or liquid with the alcohol concentration higher than 10%; secondly, testing the sample bag filled with the simulant at the temperature of not higher than 70 ℃, and determining the test time t according to the requirements of the sample bag; and finally, removing the simulants in each sample bag at the end of the test, completely evaporating the immersed simulants to dryness, and weighing the quality of the non-volatile residues, namely, testing the total migration quantity of the plastic material by a bag method.
Wherein, the contact temperature of above 70 ℃ is also needed for the test of the individual samples. In order to better reflect the actual temperatures of the sample bag and the simulant, a temperature detector is often inserted into the sample bag, the existing common file is sealed, however, the simulant is easy to volatilize, and then the immersed simulant does not meet the condition that the quality of the stock solution of the simulant is kept by more than 90%, so that the test is ineffective. In the test experiment, the detected object is often broken due to poor quality, the phenomenon of leakage of the simulated object occurs, and the flowing simulated liquid is easy to destroy the heating element or cause safety problems such as explosion.
Therefore, there is a need for an improvement in the prior art seal for plastic full migration test.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the sealing device for the plastic full-migration test, wherein through the perforation for accommodating the thermometer is formed on the clamping surfaces of the first clamping plate and the second clamping plate, the sealing effect of a gap and an opening gap caused by the penetration of the thermometer in the sample bag is improved; the sealing effect of the bag mouth is further improved through the compression deformation of the elastic inner layer.
In order to achieve the technical effects, the technical scheme of the utility model is as follows: a sealing device for a plastic full-migration test, comprising:
the bag mouth sealing clamp comprises a first clamping plate and a second clamping plate which are clamped with each other;
the clamping surfaces of the first clamping plate and the second clamping plate form a through hole for accommodating the thermometer;
the first clamping plate and the second clamping plate comprise a clamping surface layer and an elastic inner layer from outside to inside.
The preferable technical scheme is that the first clamping plate and the second clamping plate are in magnetic attraction fit.
The preferable technical scheme is that the bag mouth sealing clamp is provided with a fixing piece, the fixing piece is arranged in a forked mode, and the first clamping plate and the second clamping plate are clamped between fork mouths of the fixing piece.
The preferable technical scheme is that the clamping surface layer is provided with guide pieces which are matched with the fixing pieces in a concave-convex mode, the guide pieces are respectively arranged on two sides of the perforation, and the extending direction of the guide pieces is consistent with the hole depth of the perforation.
The preferable technical scheme is that the device further comprises a bag bracket, wherein the bag bracket is provided with a sample unit accommodating cavity, the sample unit accommodating cavity is provided with sealing covers which are in one-to-one correspondence, and the sealing covers are made of transparent materials.
The preferable technical scheme is that the bag bracket is provided with bottom simulant accommodation chambers corresponding to the sample unit accommodation chambers one by one, and a hollowed-out partition plate is arranged between the bottom simulant accommodation chambers and the sample unit accommodation chambers.
The preferable technical scheme is that the bottom wall of the sample unit accommodating cavity is a diversion bottom wall.
Preferably, the bag bracket is provided with timers corresponding to the sample unit accommodating cavities one by one.
The utility model has the advantages and beneficial effects that:
1. the sealing device for the plastic full-migration test is reasonable in structure, the sample bag is clamped between the first clamping plate and the second clamping plate, and through the clamping surfaces of the first clamping plate and the second clamping plate, a through hole for accommodating the thermometer is formed, so that the thermometer for testing the temperature of an analog in the sample bag is fixed, and on the other hand, a gap and an opening gap caused by the fact that the thermometer penetrates through the sample bag are sealed;
2. the first clamping plate and the second clamping plate comprise a clamping surface layer and an elastic inner layer from outside to inside, and the clamping surface layer improves the clamping strength; the elastic inner layer is deformed under pressure, so that the friction force between the elastic inner layer and the sample bag is improved, the falling off is prevented, and the sealing effect of the bag opening is further improved.
Drawings
FIG. 1 is a schematic view of the structure of a pouch mouth sealing clip of the present utility model;
FIG. 2 is an exploded view of the pouch port sealing clamp of the present utility model;
FIG. 3 is a schematic view of the pouch mouth sealing clip and specimen bag of the present utility model in use in combination;
FIG. 4 is a schematic view of the structure of the bag carrier and seal cap of the present utility model;
FIG. 5 is a cross-sectional view of the bag carrier of the present utility model;
fig. 6 is a schematic structural view showing the use state of the sealing device for the plastic total transfer test.
In the figure: 1. a bag mouth sealing clamp; 2. a fixing member; 3. a bag holder; 4. sealing cover; 10. a sample bag; 11. a thermometer; 20. bending sections; 21. a guide member; 30. a sample cell receiving chamber; 31. a partition plate; 100. perforating; 101. a first clamping plate; 102. a second clamping plate; 300. a bottom simulant accommodation chamber.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
The "skin" and "inner" references the normal use of the plastic total migration test seal apparatus for purposes of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.
As shown in fig. 1 to 6, the sealing device for plastic total migration test of the present utility model comprises a pouch mouth sealing clamp 1 and a pouch bracket 3, wherein the pouch mouth sealing clamp 1 is provided with a first clamping plate 101 and a second clamping plate 102 which are clamped with each other; the clamping surfaces of the first clamping plate 101 and the second clamping plate 102 form a through hole 100 for accommodating the thermometer 11; the first clamping plate 101 and the second clamping plate 102 each comprise a clamping surface layer and an elastic inner layer from outside to inside.
As shown in fig. 1 to 3, the outer contours of the first clamping plate 101 and the second clamping plate 102 are any geometric figure, and in the embodiment, the outer contours of the first clamping plate 101 and the second clamping plate 102 are isosceles trapezoids so as to meet the right angle matching with the sample bag. In the embodiment, the through hole 100 extends along the symmetry axis of the isosceles trapezoid, so that the clamping areas of the first clamping plate 101 and the second clamping plate 102 are larger, and the sealing effect is better. The first clamping plate 101 and the second clamping plate 102 can be integrally connected, and the upper bottom edge or the side edge of the isosceles trapezoid can be connected; the first clamping plate 101 and the second clamping plate 102 which can be connected in a split mode are flexible to operate and manufacture, and the manufacturing of the template is simplified. The material of the clamping surface layer is hard material, such as metal, alloy and the like. The material of the elastic inner layer includes, but is not limited to, rubber and silica gel.
The thermometer 11 is a thermometer or a temperature sensor, wherein when the thermometer measures, data needs to be naturally and vertically checked, the sample bag 10 is often taken out after or in the middle of the test, and the real temperature of the test is observed and recorded; the temperature sensor has a display of temperature, and the data is more direct to observe.
The first clamping plate 101 and the second clamping plate 102 are in magnetic attraction fit, one of the first clamping plate 101 and the second clamping plate 102 is provided with a magnetic piece, and the other is made of a magnetic attraction material. The first clamping plate 101 and the second clamping plate 102 are clamped in a magnetic attraction matching mode, so that the operation is simpler and more convenient, only the first clamping plate 101 and the second clamping plate 102 are required to be contacted, the acting force between the first clamping plate 101 and the second clamping plate 102 is balanced, the problem of inconsistent tightness is avoided, and the phenomena of incomplete sealing simulation object volatilization and the like are avoided.
The bag mouth sealing clamp 1 is provided with a fixing piece 2, the fixing piece 2 is arranged in a forked mode, and a first clamping plate 101 and a second clamping plate 102 are clamped between fork mouths of the fixing piece 2. The clamping surface layer is provided with guide members 21 which are matched with the fixing members 2 in a concave-convex manner, the guide members 21 are respectively arranged on two sides of the perforation 100, and the extending direction of the guide members 21 is consistent with the hole depth of the perforation 100. Due to the clamping of the fixing piece 2, the elastic inner layer is further deformed, and the sealing effect of the bag mouth sealing clamp is improved. The guide piece 21 is beneficial to inserting and clamping the fixing piece 2, so that the operation efficiency and the sealing effect are improved. The forked port of the fixing piece 2 is provided with the bending section 20, and the bending section 20 prevents the problem that the opening state of the fixing piece 2 is difficult, and the fixing piece 2 is easily broken or deformed to reduce the clamping pressure due to overlarge opening force, so that the tightness is negatively influenced; on the other hand, the convenience of clamping is improved.
As shown in fig. 4 to 6, the bag holder 3 is further provided with a sample cell accommodating chamber 30, the sample cell accommodating chamber 30 is provided with sealing covers 4 in one-to-one correspondence, and the sealing covers 4 are made of transparent materials. The volatile simulant is effectively prevented from being dispersed in the heating element, the cooling volatile simulant is recovered after the completion of the test, the pollution of experimental environment is reduced, the safety problem is avoided, and the interference in the test process of the sample bag 10 between the adjacent sample cell accommodating cavities 30 is also effectively prevented, such as the thermal expansion and the cracking of the sample bag 10, so that the splash of the simulant is caused to interfere with the sample bag 10 in the adjacent sample cell accommodating cavity 30. The sealing cover 4 is made of transparent material, so that whether the sample bag 10 is inflated or broken or not can be conveniently observed. The sealing cover 4 is provided with a convex edge, so that the overlapping area of the sample unit accommodating cavity 30 and the sealing cover 4 is increased, and the stability is improved. The bag bracket 3 and the sealing cover 4 are made of heat conducting materials, so that the heat of the heating piece absorbed by the simulant can be increased to the temperature required by the test.
As shown in fig. 5, the bag bracket 3 is provided with bottom simulant accommodation chambers 300 corresponding to the sample unit accommodation chambers 30 one by one, and a hollowed-out partition plate 31 is arranged between the bottom simulant accommodation chambers 300 and the sample unit accommodation chambers 30; the bottom wall of the sample cell receiving chamber 30 is a flow-directing bottom wall that helps to receive the flow of the simulant from the ruptured sample bag 10. The bottom simulant accommodation chamber 300 is provided with a drawable accommodation body, so that the flowing-out simulant is convenient to process, and the safety and the environmental protection of the experimental environment are effectively improved.
The bag holder 3 is provided with timers in one-to-one correspondence with the sample cell accommodation chambers 30. The time required for testing different sample bags 10 is different, an operator needs to record the initial time and the end time of the test required by each sample bag 10, and when the number of samples is large, the operator often forgets the time and overturns, the test result is inaccurate and the working efficiency is low. In order to make the use of the timer more convenient and intuitive, the timer is provided on the outer wall of the sample cell receiving chamber 30.
As shown in fig. 6, the sample bag 10 is placed in the sample cell receiving chamber 30, and since the sample bag 10 is made of a film material and the sample bag 10 is filled with a liquid-state dummy, the sample bag 10 under test is supported and carried by the bottom wall and the side walls of the sample cell receiving chamber 30. The temperature detector 11 is directed to the opening of the sample cell accommodation chamber 30, and the temperature is observed through the transparent sealing cover 4, so that whether the sample bag 10 is inflated or ruptured can be observed.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (8)
1. A sealing device for a plastic full-migration test, comprising:
the bag mouth sealing clamp (1) comprises a first clamping plate (101) and a second clamping plate (102) which are clamped with each other;
the clamping surfaces of the first clamping plate (101) and the second clamping plate (102) form a through hole (100) for accommodating a thermometer;
the first clamping plate (101) and the second clamping plate (102) comprise a clamping surface layer and an elastic inner layer from outside to inside.
2. The sealing device for plastic full-migration test according to claim 1, wherein the first clamping plate (101) and the second clamping plate (102) are magnetically engaged.
3. The sealing device for plastic full-migration test according to claim 1 or 2, wherein the pocket sealing clip (1) is provided with a fixing member (2), the fixing member (2) is arranged in a bifurcated manner, and the first clamping plate (101) and the second clamping plate (102) are clamped between fork openings of the fixing member (2).
4. A sealing device for a plastic total transfer test according to claim 3, wherein the clamping surface layer is provided with guide members (21) which are in concave-convex fit with the fixing members (2), the guide members (21) are respectively arranged at both sides of the through hole (100), and the extending direction of the guide members (21) is consistent with the hole depth of the through hole (100).
5. The sealing device for plastic total migration test according to claim 1, further comprising a bag holder (3), wherein the bag holder (3) is provided with a sample cell accommodating cavity (30), the sample cell accommodating cavity (30) is provided with sealing covers (4) in one-to-one correspondence, and the sealing covers (4) are made of transparent materials.
6. The sealing device for plastic total transfer capacity test according to claim 5, wherein the bag holder (3) is provided with bottom simulant accommodation chambers (300) corresponding to the sample cell accommodation chambers (30) one by one, and a hollowed-out partition plate (31) is arranged between the bottom simulant accommodation chambers (300) and the sample cell accommodation chambers (30).
7. The sealing device for plastic total migration test according to claim 6, wherein the bottom wall of the sample cell accommodation chamber (30) is a diversion bottom wall.
8. The sealing device for plastic total transfer test according to claim 5, wherein the bag holder (3) is provided with a timer in one-to-one correspondence with the sample cell accommodation chambers (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067972.3U CN219784817U (en) | 2023-05-06 | 2023-05-06 | Sealing device for plastic total migration test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067972.3U CN219784817U (en) | 2023-05-06 | 2023-05-06 | Sealing device for plastic total migration test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219784817U true CN219784817U (en) | 2023-10-03 |
Family
ID=88157111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321067972.3U Active CN219784817U (en) | 2023-05-06 | 2023-05-06 | Sealing device for plastic total migration test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219784817U (en) |
-
2023
- 2023-05-06 CN CN202321067972.3U patent/CN219784817U/en active Active
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| GR01 | Patent grant |