News

Home > News > Content
Lamination Film Preparation Methods Are Divided Into Four Categories
Jun 19, 2017

Lamination Film to plastic film as impermeable substrate, and non-woven Lamination Film made of geosuction impermeable material, its impermeability depends mainly on the plastic film impermeability. At present, domestic and foreign anti-seepage application of plastic film, mainly polyvinyl chloride (PVC) and polyethylene (PE), EVA (ethylene / vinyl acetate copolymer), they are a polymer chemical flexible material, the proportion of small, Strong extension, high adaptability to deformation, corrosion resistance, low temperature resistance, good frost resistance. The main mechanism is to plastic film impermeable barrier earth dam leakage channel, with its large tensile strength and elongation to withstand water pressure and adapt to the dam deformation; and non-woven is also a polymer short fiber chemistry Material, through the needle or hot tack forming, with high tensile strength and extensibility, it is combined with the plastic film, not only increased the tensile strength of plastic film and anti-puncture ability, and because the non-woven surface rough , Which increases the friction coefficient of the contact surface, which is favorable to the stability of the composite geomembrane and the protective layer. At the same time, they have good resistance to bacteria and chemical resistance, not afraid of acid, alkali, salt erosion. The following are the same as the "

The Lamination Film is a separation membrane composed of a microporous membrane or an ultrafiltration membrane, and a dense homogeneous film having a thickness of only 0.1 to 0.25 m is used as a barrier layer on the surface thereof. So that the amount of material through a great increase.

The material of the Lamination Film includes any possible combination of materials, such as coating a metal oxide on a ceramic film or coating an aromatic polyamide film on a polysulfone microporous membrane, both of which are made of nonwoven Reinforced to support the pressure resistance of the microporous membrane, while the hollow fiber membrane is not required.

Lamination Film preparation method is divided into four categories: (1) lamination method, first prepared a thin dense homogeneous membrane, and then laminated on the microporous support film; (2) dip coating method, the polymer solution (3) a plasma vapor deposition method, using a plasma glow to make a micro-film, and then subjecting the active monomer or prepolymer solution to a microporous film, (4) interfacial polymerization, on the surface of the microporous support film, with the active monomer interface polymerization.

Lamination Film is mainly used for reverse osmosis, gas separation, pervaporation and other separation process.

A film of a surface active layer (a dense separation layer) having a separation function and a porous layer having a supporting action was prepared by using two different film materials.

PE protective film to a special polyethylene (PE) plastic film as the substrate, a cross-linked acrylic resin as adhesive, and then after several special additives processed from the nature of soft, good adhesion, easy to paste, easy to peel, Stripped without residue.

PE protective film is the biggest advantage of the protection of products in the production and processing, transportation, storage and use of the process from pollution, corrosion, scratches, to protect the original bright and clean glossy surface, thereby improving product quality and market competitiveness The





Shanghai Hanker Plastics Co.,Ltd