What's the tape for sealing tape?
BOPP film can be produced by tube or flat film method. The BOPP films obtained by different processing methods have different properties. The BOPP film produced by the flat film method has a higher strength ratio (up to 8-10), so the strength is higher than that of the tube film, and the uniformity of the film thickness is better.
The base material of the sealing adhesive tape is BOPP film.BOPP is a very important flexible packaging material, and has been widely used. BOPP film is colorless, odorless, tasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency. It is a high quality substrate for making transparent sealing tape. BOPP film has low surface energy, and it needs corona treatment before gluing or printing. However, the BOPP film has good printing adaptability after corona treatment. It can be printed by printing and has a beautiful appearance, so it is often used as the surface material of composite films. BOPP film is also inadequate, such as easy accumulation of static electricity, no heat sealing and so on. In the high-speed production line, BOPP film is easy to generate static electricity. Electrostatic eliminator is necessary. In order to obtain the BOPP heat seal film, can be on the surface of BOPP film after corona treatment coating heat sealing resin glue, such as PVDC, EVA latex latex, can also be coated with solvent glue, coating or extrusion method can be applied to the production of extruded composite heat sealing film BOPP. The film is widely used in bread, clothing, footwear and other packaging, and cigarettes, books cover packaging. The tear strength of BOPP film increases after stretching, but the secondary tearing strength is very low. Therefore, no cut can be left at the ends of the BOPP film, otherwise the BOPP film is easy to tear when printed and compounded. BOPP coated self-adhesive, we can produce our commonly used sealing tape, tape sealing tape, is a larger amount of BOPP market.
In order to obtain better comprehensive performance, the multilayer composite method is usually used in the process of production. BOPP can be combined with a variety of different materials to meet special application needs. Such as BOPP and LDPE (CPP), PE, PT, PO and PVA composite are highly resistance gas, humidity resistance, transparency, high and low temperature resistance, steam resistance and oil resistance, different composite membrane can be applied to oily food, delicious food, dry food, food, cooking cooked food, dipping MSG, pancakes, rice cake and other packaging.
