CPP multilayer composite film and preparation method thereof

• Main Authors: ZHU XIAOLEI, ZHANG DAZHAO, WU PEIFU, WU DI, LIN LIN
• Format: Patent
• Language: Chinese; English
• Published: 05.12.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

The invention provides a CPP multi-layer composite film which sequentially comprises a diffusion coating, a core layer, a first adhesive layer, a first PET base material layer, a second adhesive layer, a first prism film, a third adhesive layer, a second prism film and a back coating from top to bottom, the first adhesive layer is composed of UV adhesives of two components, namely an adhesive A and an adhesive B, and the third adhesive layer is composed of UV adhesives of two components, namely an adhesive A and an adhesive B; wherein the adhesive A is prepared from the following components: acrylic resin, methyl methacrylate, tripropylene glycol diacrylate, alpha-hydroxy ketone and triethyl phosphonoacetate; and the adhesive B is prepared from the following components: acrylic resin, diethylene glycol divinyl ether, phenyl bis (2, 4, 6-trimethylbenzoyl) phosphine oxide, dimethyl sulfoxide and resorcinol monobenzoate. According to the CPP multilayer composite film, the first adhesive layer suitable for surfac