| Barrier property testing of packages is one of | | | | example. Clamp the specimen in between the |
| the vital testing items for cosmetic packages. | | | | testing chamber, a flow of constant stable |
| Barrier property is the definition for barrier effect | | | | nitrogen flows in one side of the film and dry |
| of packaging materials against gas, liquid and other | | | | nitrogen flows in the other side. Owing to the |
| permeable substances. Barrier property is the | | | | humidity difference, water vapor would penetrate |
| important factor affecting product quality during | | | | from the high humidity side into the low humidity |
| shelf life period. | | | | side. The penetrated humidity (moisture) is carried |
| The unsaturated bonds in cosmetic ingredients | | | | by the dry nitrogen to the sensor, outputs |
| are easy to be oxidized and deteriorated; the lost | | | | electronic signal and then, calculates water vapor |
| of moisture in the cosmetic would lead to | | | | permeability quantity. For packaging bags and |
| hardening of cosmetics. Meanwhile, the fragrance | | | | bottles, dry nitrogen flows inside the container and |
| of the cosmetics has great influence on the | | | | the outside is in high humidity state. |
| marketing of cosmetics. Barrier property testing | | | | 3. Fragrance Maintenance Testing: This Index is |
| includes the permeability testing of oxygen, water | | | | very important to cosmetics. Once the fragrance |
| vapor and fragrant gas through cosmetic | | | | loses, there would be great influence on selling. |
| packages. | | | | Take PERME OR2/410 Organic Gas Transmission |
| 1?Oxygen Barrier Property Testing: This index is | | | | Rate Test System as example. In regulated |
| mainly for the oxygen transmission rate testing of | | | | temperature, separate the chamber into two |
| films, laminated films, cosmetic pouches or bottles. | | | | halves by the specimen, with one side as dense |
| Hereinafter, we take Labthink PERME OX2/230 | | | | fragrance side and the other low concentrated |
| Oxygen Transmission Rate Test System as the | | | | fragrance side; thus, forming a concentration |
| example. Clamp the preconditioned specimen in | | | | difference between two sides. Fragrant gas will |
| between the testing chamber, oxygen/air flows in | | | | penetrate into the low concentration side and be |
| one side of the film, and high pure nitrogen flows | | | | carried to the isolation chamber by the carrying |
| in the other side. Oxygen molecules migrate | | | | gas. Hydrogen flame ionization detector (FID) can |
| through the film and into the high nitrogen side, | | | | measure the quantity of the fragrance gas and |
| and are carried by the nitrogen flow to the | | | | further calculate the fragrance gas quantity in a |
| sensor. With the oxygen concentration analysis of | | | | unit area within a unit time. |
| the sensor, the oxygen transmission quantity can | | | | |
| be calculated. The testing principles of pouches | | | | Further information please feel free to contact |
| and bottles are similar. | | | | Shirley Wu via trade2@labthink.cn, |
| 2. Water Vapor Transmission Rate Testing: is | | | | skype:shirley-labthink, or (tel)0086-531-85068709. |
| mainly for the testing of water vapor | | | | Labthink, the excellent provider of testing |
| transmission rate of film materials and packaging | | | | instruments and testing services, is devoted to |
| containers like bottles, bags and cans. Through | | | | provide most excellent and complete quality |
| WVTR testing, technical indexes for control and | | | | control solutions for pharmaceutical, foodstuff, |
| adjustment of packaging materials can be | | | | cosmetics, packaging, printing, adhesive, |
| achieved so as to meet the varied application | | | | automotive, petrochemistry, environment, biology, |
| needs. Take PERME W3/330 Water Vapor | | | | new energy, construction, aviation and electronic |
| Transmission Rate Testing System as an | | | | industries worldwide. |