Pendulum Impact Tester | Film Impact Tester » Articles http://www.pendulum-impact.com Film Impact Tester is applicable in the precise impact resistance test of plastic films, sheets, laminated films and foils, etc. Wed, 08 Apr 2020 08:35:41 +0000 en hourly 1 http://wordpress.org/?v=3.0.3 How to guarantee the low temperature resistance of frozen food package? http://www.pendulum-impact.com/how-to-guarantee-the-low-temperature-resistance-of-frozen-food-package.html http://www.pendulum-impact.com/how-to-guarantee-the-low-temperature-resistance-of-frozen-food-package.html#comments Wed, 08 Apr 2020 07:30:03 +0000 admin http://www.pendulum-impact.com/?p=28 By freezing the food quickly at an ultra-low temperature, it can be preserved from the time it is prepared to the time it is eaten. Frozen food slows down decomposition by turning residual moisture into ice, inhibiting the growth of most bacterial species. No extra preservatives are required because microorganisms do not grow when the temperature of the food is below −9.5 °C (15 °F), which is sufficient on its own in preventing food spoilage.

Today there are multiple options for packaging frozen foods: boxes, cartons, bags, pouches, Boil-in-Bags, lidded trays and pans, crystallized PET trays, and composite and plastic cans. No matter which kind of form of the frozen food package is, it must maintain its integrity throughout machine filling, sealing, freezing, storage, transportation, thawing and often cooking.

This article is going to discuss the low temperature resistance of frozen food package and how to guarantee the low temperature resistance of frozen food package. The low temperature resistance of package is evaluated by its impact resistance after a period of storage in low temperature environment. To be specific, the lower temperature resistance is proportional to its impact resistance. Therefore, if the package doesn’t have sufficient impact resistance, it may break during storage or transportation under low temperature. That’s why the manufacturers of frozen food should take measures to ensure the impact resistance of the frozen food package.

Figure 1. Frozen Food Package made of Composite Film

This article provides a simplified testing method for impact resistance of frozen food package. The specimens are plastic composite package supplied by one food company. The testing instrument is Labthink’s FIT-01 Pendulum Impact Tester.

The tests can be performed according to the following procedures.

(1)    Cut 20 pieces 10cm by 10cm specimens along the machine direction of the roll of composite film sample.

(2)    Measure the thickness of the film with thickness tester. Measure 10 points and calculate the average value.

(3)    Condition 10 of those specimens in laboratory conditions and place another 10 pieces of specimens at -18℃ for 2 hours. Then take the specimens out and get ready for the tests.

(4)    Select the impact head whose diameter is 12.7 mm. The specimen clamp diameter should be 89 mm.

(5)    Calibrate the instrument according to relative standards.

(6)    Clamp the specimen. The specimen should be flat. Make sure there are no creases in the specimens. Do not stretch the specimens too tight.

(7)    Enter the test interface. Fix the pendulum and then click Test button so that the pendulum will be released and impact the specimen. The impact energy will be displayed in the screen.

With the test results obtained in the impact resistance tests, the users of plastic composite package for frozen food can determine whether the packaging materials can meet their requirements for low temperature resistance. Accordingly, the users can select most suitable materials to ensure the package quality and the product quality.

For more details about FIT-01 Pendulum Impact Tester, please visit www.labthink.com.

About Labthink Instruments Co., Ltd:

Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.

]]> http://www.pendulum-impact.com/how-to-guarantee-the-low-temperature-resistance-of-frozen-food-package.html/feed 0 How to measure the impact resistance of automotive window film? http://www.pendulum-impact.com/how-to-measure-the-impact-resistance-of-automotive-window-film.html http://www.pendulum-impact.com/how-to-measure-the-impact-resistance-of-automotive-window-film.html#comments Sun, 29 Mar 2020 07:38:07 +0000 admin http://www.pendulum-impact.com/?p=31 Window film is a thin film or laminate that can be installed to the interior of glass surfaces in automobiles, boats, homes and buildings. This article discusses automotive window film that can be applied on the windshield or sunroof of the automobiles.

When the glass is broken it holds together, preventing dangerous shards from flying about, or to make it more difficult for an intruder to gain entry. That’s why the automotive window film is also known as anti-blast window film. The automotive window film can also reduce heat and glare and prevent the UV light. Moreover, by offering an unimpeded view from the low-light side but virtually no view from the high-light side, the automotive window film can protect the privacy of the users.

Generally, the automotive window film should have sufficient flexibility so that it can resist the impact from the external forces. If the impact resistance of the automotive window film is insufficient, when the automotive glass encounters external impact, the window film may not be able to protect the passengers from the dangerous shards and as a result the passengers may get wounded. Therefore, it is important for the manufacturers to inspect the impact resistance of the automotive window film to ensure its performance.

Figure 1. Automotive Window Film

This article provides a simplified method for impact test of automotive window film. The specimens are provided by one brand automotive window film manufacturer. The testing instrument used in the tests is Labthink’s FIT-01 Pendulum Impact Tester.

The tests can be performed according to the following procedures.

(1)   Cut 10 pieces of specimens along the transverse direction of the sample. The size of the specimen should be 10cm by 10cm. Then condition the specimens at 23℃±2℃ and 45%RH ~ 55%RH for at least 4 hours. The tests should be performed also in the same environmental conditions.

(2)   Measure the thickness of the specimen with thickness tester. Measure 10 points of each specimen and calculate the mean value of the 10 results.

(3)   Select the impact head whose diameter is 12.7mm. Select specimen clamp diameter 89mm.

(4)   Calibrate the instrument as required.

(5)   Spread and clamp the specimen in the specimen clamp. Do not stretch the specimen and get rid of crinkles.

(6)   Enter test interface. Fix the impact pendulum. Press Test button to release the pendulum. The pendulum will fall freely and impact the specimen. The impact energy will be displayed in the screen of the instrument.

(7)   Test other specimens in the same way mentioned above and record the test results.

According to the test results, the manufacturer can determine whether the impact resistance of the automotive window film meets the requirement for practical use and may improve the manufacturing craft or change the raw materials to improve the quality of their products.

For more details about FIT-01 Pendulum Impact Tester, please visit www.labthink.com

About Labthink Instruments Co., Ltd:

Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.

]]> http://www.pendulum-impact.com/how-to-measure-the-impact-resistance-of-automotive-window-film.html/feed 0 Testing Solution to the Low Temperature Resistance of Flexible Packaging http://www.pendulum-impact.com/testing-solution-to-the-low-temperature-resistance-of-flexible-packaging.html http://www.pendulum-impact.com/testing-solution-to-the-low-temperature-resistance-of-flexible-packaging.html#comments Thu, 12 Mar 2020 07:53:54 +0000 admin http://www.pendulum-impact.com/?p=34 Some food or pharmaceuticals need to be stored in extremely low temperature (sometimes the ambient temperature is required to be as low as -18℃) to guarantee the quality of the products.

However, the mechanical properties e.g. impact resistance of those flexible packaging materials used for those products may be compromised when the products are stored at an extremely low temperature. As a result, the package may become liable to be broken in storage or transportation.

Therefore, it is necessary to ensure the low temperature resistance of the packaging materials before use them to pack the products mentioned above. The low temperature resistance of the packaging material is mainly reflected by its flexibility and impact resistance. To be specific, the packaging materials must have sufficient flexibility and impact resistance so that the package can resist the impact caused by external forces during storage and transportation process.

This article provides a simplified test method of the impact resistance of flexible package for your reference. The test specimens are plastic bags for frozen food. The testing instrument used for the tests is Labthink’s FIT-01 Pendulum Impact Tester. In the tests, two groups of specimens which have been conditioned in standard conditions and at -18℃ respectively are tested and the low temperature resistance can be obtained by comparing the test data of the two groups of specimens.

Figure 1. Frozen Food

The tests shall be performed according to the following detailed procedures.

(1)    Cut 10 pieces of specimens along the width direction of the provided sample material. The size of the specimen shall be 100mm by 100mm or the diameter of the specimen shall be 100mm. Then condition the specimens in an environment where the temperature is 23±2℃ and the humidity is45% ~ 55%RH for at least 4 hours. Note: The tests should be performed in the same environment.

(2)    Measure the thickness of each specimen from its central point. Calculate the average value of the 10 results and record it as the specimen thickness.

(3)    Select the impact head size according to the impact energy, which shall be within 10% to 90% of the full test range of the instrument.

(4)    Calibrate the instrument as required by the user guide.

(5)    Spread the specimen and clamp it tightly. Make sure the specimen is free of creases. Do not stretch the specimen too tight. The same surfaces of the 10 specimens shall be impacted.

(6)    Fix the pendulum and then release the pendulum to impact the specimen. Record the displayed value.

(7)    Cut another 10 pieces of specimens along the width direction of the provided sample material. The size of the specimen shall be 100mm by 100mm or the diameter of the specimen shall be 100mm. Then condition the specimens in an environment where the temperature is -18℃ for at least 2 hours. Then repeat the procedures from step 2 to step 6.

(8)    The low temperature resistance can be obtained by calculating the ratio of impact energy at -18℃to the impact energy in standard condition. The unit of low temperature resistance is %.

The low temperature resistance of the packaging materials shall conform to certain requirements e.g. the low temperature resistance of BOPA/LDPE composite film should be not less than 60%. Otherwise, the user or manufacturer shall consider how to strengthen the mechanical properties of those packaging materials at low temperature.

For more details about FIT-01 Pendulum Impact Tester, please visit www.labthink.com.

About Labthink Instruments Co., Ltd:

Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.

]]> http://www.pendulum-impact.com/testing-solution-to-the-low-temperature-resistance-of-flexible-packaging.html/feed 0 How to reduce the breakage ratio of flexible package for food at low temperatures? http://www.pendulum-impact.com/how-to-reduce-the-breakage-ratio-of-flexible-package-for-food-at-low-temperatures.html http://www.pendulum-impact.com/how-to-reduce-the-breakage-ratio-of-flexible-package-for-food-at-low-temperatures.html#comments Tue, 25 Feb 2020 08:34:43 +0000 admin http://www.pendulum-impact.com/?p=37 Some food or pharmaceuticals need to be stored in extremely low temperature (sometimes the ambient temperature is required to be as low as -18℃) to guarantee the quality of the products.

However, the mechanical properties e.g. impact resistance of those flexible packaging materials used for those products may be compromised when the products are stored at an extremely low temperature. As a result, the package may become liable to be broken in storage or transportation.

Therefore, it is necessary to ensure the low temperature resistance of the packaging materials before use them to pack the products mentioned above. The low temperature resistance of the packaging material is mainly reflected by its flexibility and impact resistance. To be specific, the packaging materials must have sufficient flexibility and impact resistance so that the package can resist the impact caused by external forces during storage and transportation process and the breakage ratio of those packaging bags may be reduced.

This article provides a simplified test method of the impact resistance of flexible package for your reference. The test specimens are plastic bags for frozen food. The testing instrument used for the tests is Labthink’s FIT-01 Pendulum Impact Tester. In the tests, two groups of specimens which have been conditioned in standard conditions and at -18℃ respectively are tested and the low temperature resistance can be obtained by comparing the test data of the two groups of specimens.

Figure 1. FIT-01 Pendulum Impact Tester

The tests shall be performed according to the following procedures.

(1) Cut Specimens

Cut 20 pieces of specimens from provided samples. Condition the specimens at 23±2℃, 45% ~ 55%RH for at least 4 hours. The size of the specimen shall be 10cm x 10cm.

(2) Measure Thickness

Measure the thickness of specimens. Make the center as the point to be measured. The final result should be the average value of the results of all the 20 pieces of specimens.

(3) Condition Specimens

Select 10 random specimens and condition them at -18℃ for 2 hours.

(4) Calibrate Instrument

Select proper impact head and impact range, which shall be within 10% to 90% of the full test range of the instrument. For the tests we did, we select Φ12.7 mm impact head and the diameter of the clamped specimen is Φ89 mm. The impact energy is 3 J. The instrument shall be calibrated as required.

(5) Test at Room Temperature

Clamp the specimen. Step on the pneumatic pedal switch to clamp the specimen tightly. Click Test so that the impact head will be released and impact the specimen. The result will be automatically displayed in the screen. Repeat the operation until all the 10 pieces of specimens are tested.

(6) Test at Low Temperature

Test the specimens which are conditioned at low temperature in the same way as described in step 5.

The low temperature resistance of the packaging materials shall conform to certain requirements e.g. the low temperature resistance of BOPA/LDPE composite film should be not less than 60%. Otherwise, the user or manufacturer shall consider how to strengthen the mechanical properties of those packaging materials at low temperature.

For more details about FIT-01 Pendulum Impact Tester, please visit www.labthink.com.

About Labthink Instruments Co., Ltd:

Labthink Instruments Co., Ltd is one leading supplier of packaging testing instruments, which is headquartered in Jinan, China and operated in Boston, U.S.A.

]]> http://www.pendulum-impact.com/how-to-reduce-the-breakage-ratio-of-flexible-package-for-food-at-low-temperatures.html/feed 0 Medical Protective Clothing Impact Resistance Testing http://www.pendulum-impact.com/medical-protective-clothing-impact-resistance-testing.html http://www.pendulum-impact.com/medical-protective-clothing-impact-resistance-testing.html#comments Fri, 08 Jul 2011 08:20:17 +0000 admin http://www.pendulum-impact.com/?p=18 Medical protective clothing impact resistance testing can guarantee the effective protection of user. Impact resistance property testing can be classified as dart impact and pendulum impact.

A. Labthink BMC-B1 Falling Dart Impact Tester: is applicable in quality and energy testing of plastic films and sheets under the attack of free-falling dart at given heights, according to free-falling dart theory.

B. Labthink FIT-01 Film Impact Tester: is applicable to evaluate the force damaging the plastic film, laminated film, sheet and foil sample with its hemisphere head falling at certain speeds, so as to bring forward shock resistance evaluation of the material by measuring the consumed energy of the head.

Further details please feel free to contact Shirley via:
TEL: 0086-531-85061080
FAX: 0086-531-85062108
EMAIL: trade2@labthink.cn
SKYPE: shirley-labthink
MSN: shirleywu_labthink@hotmail.com

More about Labthink(http://www.labthink.cn/en):
Labthink focusing on the laboratory testing instruments R&D and production and laboratory IT services, is dedicated to provide professional quality control solutions for customers in packaging, food, pharmaceutical, medical, daily chemistry, printing, adhesive, automotive, petrochemistry, bioscience, construction, new energy and other industries.

]]> http://www.pendulum-impact.com/medical-protective-clothing-impact-resistance-testing.html/feed 0 VCI Plastic Film Impact Testing Instruments http://www.pendulum-impact.com/vci-plastic-film-tear-resistance-testing.html http://www.pendulum-impact.com/vci-plastic-film-tear-resistance-testing.html#comments Thu, 07 Jul 2011 09:23:29 +0000 admin http://www.pendulum-impact.com/?p=12 VCI (Volatile Corrosion Inhibition) plastic film impact property and its control could avoid package breakage owing to the insufficient toughness, so as to effectively get rid of product rustiness caused by inferior impact or shock resistance of the VCI plastic packages during circulation.

VCI plastic film impact testing is in compliance with ASTM D3420, GB/T 8809-1958 and other international standards. Labthink PARAM FIT-01 Film Impact Tester is in strict compliance with these standards and with more advanced functions. For example, Labthink PARAM FIT-01 Film Impact Tester is of pneumatic specimen clamping and pneumatic pendulum releasing, which is completely different from other products that are manual clamping. Pneumatic clamping is rapid and effective with even clamping force on the four sides of the film, and will not slide during impact with inaccurate results. Besides, the precision of PARAM FIT-01 Film Impact Tester is up to 0.001J, whereas other impact testers are mostly of mechanical type with low precision through reading the graduation on the board.

Further details please feel free to contact Shirley via:
TEL: 0086-531-85061080
FAX: 0086-531-85062108
EMAIL: trade2@labthink.cn
SKYPE: shirley-labthink
MSN: shirleywu_labthink@hotmail.com

More about Labthink(http://www.labthink.cn/en):
Labthink focusing on the laboratory testing instruments R&D and production and laboratory IT services, is dedicated to provide professional quality control solutions for customers in packaging, food, pharmaceutical, medical, daily chemistry, printing, adhesive, automotive, petrochemistry, bioscience, construction, new energy and other industries.

]]> http://www.pendulum-impact.com/vci-plastic-film-tear-resistance-testing.html/feed 1 Labthink Exhibits the Power of Intelligence in Chinaplas 2011 http://www.pendulum-impact.com/labthink-exhibits-the-power-of-intelligence-in-chinaplas-2011.html http://www.pendulum-impact.com/labthink-exhibits-the-power-of-intelligence-in-chinaplas-2011.html#comments Thu, 23 Jun 2011 03:33:46 +0000 admin http://www.pendulum-impact.com/?p=10 On 17th-20th May, 2011, the 25th International Exhibition on Plastics and Rubber Industries was held in Guangzhou. Labthink exhibited her newly developed X series of intelligent products, and demonstrated powerful functions of Labthink CystemTM Online Laboratory Management System, the new laboratory intelligence concept based on cloud-computing. All have obtained favorable responses and recognition, and Labthink booth became one of the crowded booths among the exhibitors.
Chinaplas 2011 is the debut for Labthink CystemTM Online Management System, the world leading technology in flexible packaging testing industry; it’s undoubted that this system became the focus. Labthink X series of intelligent instruments also drew the attention of the attending experts, based on their modern designs, patented structures and connecting property to the cloud-computing management platform, etc.
During the exhibition, every Labthink instrument was surrounded by visitors from different places and different industries: experts from quality inspection institutes and academies, engineers from packaging manufacturers, and technicians from packaging users… Detailed product performances and functions were inquired by the visitors, and the booth turned into a seminar for those new products. After learning detailed information, visitors were inspired by the intelligent laboratory management system of Labthink. Many of them expressed their desire for cooperation, among whom, Belorussian client signed the contract during the exhibition, and promised to establish long-term strategic cooperation with Labthink.
As the leader in flexible packaging testing industry, Labthink(http://www.labthink.cn/en) will go on devoting herself to technological innovation and provide industrial clients with more intelligent testing instruments!


More details  about Labthink, please feel free to contact Shirley Wu via:

TEL: 0086-531-85061080
FAX: 0086-531-85062108
EMAIL: trade2@labthink.cn
SKYPE: shirley-labthink
MSN: shirleywu_labthink@hotmail.com
]]> http://www.pendulum-impact.com/labthink-exhibits-the-power-of-intelligence-in-chinaplas-2011.html/feed 0