Method for verifying moisture resistance of roasted and wrought products paper aluminum-plastic packaging
Abstract: The roasted seeds and nuts products are highly nutritious and contain a large amount of vitamins, proteins and oils. It is necessary to strengthen the monitoring of the moisture barrier properties of the packaging. In this paper, Labthink W3 / 031 water vapor transmission rate tester roasted products paper blister pack to the outside water vapor barrier property, and the scope of the basic process described, the detection principle of the test and test equipment and other content, enterprise Reference can be made to the selection of moisture permeability test equipment and test methods.
Key words: roasted seeds and nuts, high barrier, moisture barrier, weighing method, water vapor transmission rate, water vapor transmission rate test system
1 , meaning
Roasted seeds are a kind of snack foods made by drying, drying and frying of plant fruits for people to eat in their leisure time, such as melon seeds, broad beans, peanuts, walnuts, chestnuts, beans and so on. The packaging of roasted seeds and nuts products generally uses plastic composite film, aluminum-plated composite film, aluminum-plastic composite film, paper aluminum-plastic composite film, plastic cans and other packaging. The packaging should have good moisture-proof performance, because the roasted and roasted products are in a high-humidity environment, the product is easy. Absorption of water vapor in the environment causes the product to be mildewed and smeared, increasing the risk of product deterioration and taste changes, and shortening the shelf life. Therefore, it is necessary to strictly control the barrier property of the packaging material to water vapor and ensure the sealing of the finished packaging.
Figure 1 roasted seeds and nuts products paper aluminum plastic packaging
2 , reference standard
The domestic water vapor barrier test methods for composite film and sheet packaging include weighing method (cup method), electrolysis method, infrared method and humidity method. The reference method standards are GB/T 1037 "plastic film and sheet". Water vapor permeability test method, cup method, GB/T 21529 "Determination of water vapor transmission rate of plastic film and sheet, electrolytic sensor method", GB/T 26253 " Infrared detector for measuring water vapor transmission rate of plastic film and sheet" Law, GB/T 30412 "Plastic film and sheet water vapor transmission rate measurement humidity sensor method", the reference standard is GB/T 1037-1988 "plastic film and sheet water vapor test method cup method".
3 , test samples
Three types of roasted and roasted products used in a food company are aluminum-plastic packaging.
4 , test equipment
Jinan Languang Electromechanical Technology Co., Ltd. independently developed the W3/031 water vapor transmission rate tester.
Figure 2 W3/031 water vapor transmission rate tester
4.1 Test principle
W3/031 adopts the principle of wetting cup weighing method. Under certain temperature, the specific humidity difference is formed on both sides of the sample. The water vapor passes through the sample in the moisture permeable cup and enters the dry side. The amount of change in the weight of the moisture permeable cup over time is determined by parameters such as the water vapor transmission rate of the sample.
4.2 Scope of application
(1) This equipment is suitable for water vapor transmission rate test of plastic film, sheet, paper, cardboard and its textiles, non-woven fabrics and so on.
- Film material: water vapor transmission rate of film materials such as plastic film, plastic composite film, paper-plastic composite film, geomembrane, co-extruded film, aluminized film, aluminum foil, aluminum foil composite film, waterproof breathable film, etc. test;
- Sheet type: Suitable for water vapor transmission rate test of sheet materials such as PP , PVC sheet, PVDC sheet, nylon sheet Material, etc.
- Textiles and non-woven fabrics are suitable for water vapor transmission rate testing of textiles, non-woven fabrics, etc.;
- It is also suitable for water vapor transmission rate test of liquid crystal display film, solar back panel, sterile protective film, beauty mask and other materials;
(2) This equipment can meet a variety of national and international standards, such as GB 1037 , GB/T 16928 , ASTM E96 , ASTM D1653 , TAPPI T464 , ISO 2528 , DIN 53122-1 , JIS Z0208 , YBB 00092003 .
4.3 Equipment parameters
- Test range: 0.1 ~ 10,000 g/m 2 · 24h
- Number of samples: 1 ~ 3 pieces (data are independent)
- Resolution: 0.0001 g
- Test temperature range: 15 °C ~ 55 °C , temperature control accuracy ± 0.1 °C
- Test humidity range: 10% RH ~ 98% RH (standard 90% RH ), temperature control accuracy ± 1% RH
- With the Lystem TM laboratory data sharing system, test data and device information can be reported simply by setting up and operating, making it easy to centralize and systematically manage laboratory test data.
5 , the test process
(1) Three samples with a diameter of 74 mm were cut out from the three samples by a sampler .
(2) Mount the sample on the moisture permeable cup and close the glass sealing door.
(3) Set the sample name, sample thickness, test temperature, test humidity and other parameters.
(4) Start the air supply and click the “ Start Test †option.
(5) After the test is over, the instrument automatically calculates and displays the test results.
6 , test results
The water vapor transmission rates tested in this paper were: 3.5612 g/(m 2 ·24h) , 5.1637 g/(m 2 · 24h) , 0.8231 g/(m 2 · 24h) .
7 , conclusion
W3/031 Water Vapor Transmission Rate Test System is a professional instrument for testing the water vapor transmission rate of the film. The device is easy to operate, has high test accuracy and good repeatability, and can accurately reflect the moisture resistance of the package. By comparing the test results of the three samples, it can be seen that the third sample has good moisture resistance. The packaging of roasted seeds and nuts should also pay attention to the properties of oxygen barrier, sealing performance and heat seal strength, prevent oxidation and deterioration of products, and extend the shelf life of products. For related testing equipment and testing services, you can visit Jinan Languang Company for specific information or call us . The more you understand, the more you trust! Jinan Languang Electromechanical Technology Co., Ltd. is willing to enhance technical exchanges and cooperation with enterprises and institutions in the industry.
Antineoplastic,Antineoplastic Agents,Natural Antineoplastic,Methotrexate Antineoplastic
NOUVASANT GROUP LTD. , https://www.nouvasant.com