Although aluminum foil or aluminum-plated polyester film provides excellent oxygen and moisture barrier properties, the process is complicated and the cost is high. For applications where barrier properties are not particularly high, it is apparently not sufficiently competitive. In addition, aluminum foil and aluminum-plated polyester film have a common problem that is not transparent, the final consumer can not see the contents of the package, so it is necessary to develop a polyester film with a certain barrier properties, but also transparent.
8231 is a transparent coated polyester film that enhances the barrier of polyester film to gases such as oxygen and carbon dioxide. Compared with ordinary polyester films, the 8231 film greatly enhances the barrier properties against gases such as oxygen and carbon dioxide. A number of research institutes have tested and verified that the oxygen permeability of common polyester films is as high as 130-140 for 24 hours. In comparison, the 8241 oxygen permeability of the 8231 film falls below 50, which is comparable to that of nylon films. The uncoated surface has the same properties as LB. The standard thickness of this film is 12 μm.
In use, the 8231 film can only be used as the inner layer of a composite structure. It does not have heat sealing properties. The chemically treated side can be combined with a LDPE heat seal layer. The performance of the other side is the same as that of ordinary PET and can be printed as required.
Marquee Signs, also known as light bulb signs, is a special kind of sign that expose bulbs in the front. It is a vintage styled industrial sign. To reduce the cost, Marquee Signs are usually made of galvanized sheet and then, painted with colors needed. It can be a large standing sign or a small sign hanging on the wall. Compared with normal led signs, the bulbs of Marquee Signs can be replaced easily when they are damaged as they are exposed in the front. If you are looking for such kind of retro stlye Marquee letters or Marquee signs, contact us now with your requirements for a factory price.
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