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BOPP precoating specular membrane touch membrane products use the point

by:Taian Lamination Film     2021-02-04
BOPP film light preparation can have three kinds of

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BOPP scratch-resistant flowers specular membrane touch membrane preparation process can have three kinds: coating process, the laminating process, co - Extrusion process. Most of the product are the co - abroad The extrusion process. The coating resin and polypropylene resin multi-layer co-extrusion, then two-way stretch preparation into different types of BOPP pre-coating film.

in the preparation of composite flexible packaging film, with precoating BOPP film as raw material of hot melt adhesive, can simplify the production process ( No JiaoGong period) , need to use heating stick to BOPP pre-coating film heated to proper temperature can directly with the rest of the base material compound, eliminated the pollution caused by JiaoGong section. The

worth pointing out is that the use of BOPP pre-coating film coating technology of preparation, before coating coating material, the first thing to corona treatment was carried out on the base material. Because unprocessed substrate surface activity is low, and the coating resin bond is small, the late formation of the composite film peel strength will be low. BOPP corona processing can form a certain depression, increase the surface roughness, oxidation at the same time a certain amount of hydroxyl, carboxyl and carbonyl polar groups, to improve the peel strength of composite membranes. Moreover after corona treatment will greatly improve the gas barrier property of composite membrane. Because after corona treatment surface can form many active point, the combination of these active points and coating layer closely, almost no gap between the precoat and BOPP.

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BOPP precoating specular membrane touch membrane products use points

a, BOPP precoating scratch-resistant flowers specular membrane with EVA ( Colloid for hot melt glue) , in use is associated with draping quality of colloid heat melt, flow ping. The key to grasp well in the operating temperature, pressure, speed of three key parameters, the rule is: in the guarantee colloid under the premise of fully melting on the surface and the production speed when the temperature and pressure to increase relatively.

2, the amount of ink in print, different versions of completely different, the same version also has certain change, and pre-coating film colloid quantitative is fixed, as a result of ink in printing when most of the mixture is the solvent, the solvent most of colloid and base membrane has a role in melt up, so the print in the effect of the solvent residue control is important to the whole effect of the quality control is a link.

three and many use of solvent-based glue coated ( The coating) Manufacturers often appear after draping products binding foaming phenomenon, some even though no blisters but can not bend stamping, the reason and the use of coated technology and colloid is directly related to print before they can have a certain effect of solvent residue, and the type of coated coating the glue is not completely volatile solvent after baked road, residual amount is larger, so the draping within products after double solvent is more, from the adhesive solid content analysis, the type of coated coating the solid content of only 5-7 grams per square meter, and difficult to control, and pre-coating film colloid content in more than 10 grams per square meter, which is why solvent the coating effect of the causes of blister products more easily.

Bopp coating production process and superiority of specular membrane touch membrane

two-way stretching method is a kind of plastic forming method of technical requirements are very high, in addition to the processing needs to have the good performance of equipment, more important is to require production personnel to be able to deeply know the performance of the PP and the influence of processing conditions on the properties of product, to solve the problems existing in the production in time. Bopp precoating scratch-resistant flowers specular membrane is important in the field of packaging products, have qualitative light, transparent, non-toxic, low moisture, air permeability, high mechanical strength, widely used in food, medicine, daily light industrial products such as packaging, cigarette, and used as a composite film base material, have the laudatory title of 'packing the queen'.

company since its inception, has been engaged in printing and packaging industry for plastic film business.

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we pay close attention to and tracking industry development trends at home and abroad, continuously technical renovation, professional development and production of new environmental protection special film. We have the introduction of foreign advanced technology four sets of automated production equipment, and through ISO9001 - 2000 international quality system certification, products are exported to southeast Asia, the Middle East, Europe and the United States, Africa, Oceania and other countries and regions.

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