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Application of Laser Technology in Security Printing (Research on Optical and Mechanical Performance of PET Holographic Film)

Author: WangDaPeng
Tutor: QianJunHao
School: Jiangnan University
Course: Printing Engineering and Media Technology
Keywords: PET film Holographic imaging Security printing Optical properties Mechanical Properties Crystallinity Additives
CLC: TS853.6
Type: Master's thesis
Year: 2009
Downloads: 105
Quote: 0
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Abstract


PET film is one of the most developed products of polymer film nowadays. The film is colorless and transparent, with high gloss on its surface. PET also has better mechanical behavior and more stable dimension. What’s more its price is low. PET is a kind of plastic packing material with high price versus performance ratio at present. But the contradiction of supply and demand structure at home is obviously. Common film is Oversupply, special type film with High value-added such as Holographic film is Production capacity. As a result of its own structure and characteristics. Performance of PET film constraint its broader applications, optical Performance of common PET film can not meet the requirements of holographic printing; Inevitable process of friction and wear in use affect the dimensional stability and limit its application in packaging. A new high all round-performance PET film is urgent in home markets.In this paper, we use existing PET holographic film and test means of plastic properties to do some basic research work in optical properties and mechanical properties .we also do some research in performance improvement take advantage of the Additives. The experimental results show that:(1) The optical performance of PET film is good; it fit the requirements of holographic film performance and its use demand. But there is an irreversible deterioration of optical performance over time. Additives and a reasonable structure of holographic recording layer can improve the optical properties of films and improve the effectiveness of holographic images.(2) Control the crystallinity of film to achieve the balance of tensile strength and elongation at break. Adding lubricant to reduce friction coefficient of films. Improve the wear resistance of PET holographic films by means of process improvement.(3) The addition of antistatic agents weakens the anti-wear properties of thin films. Determine the of the relative humidity scope in40%-60% by experiments to achieve the balance of anti-static properties and wear resistance.

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CLC: > Industrial Technology > Light industry,handicrafts > Printing Industry > Special printing > Special printing: process sub- > Holographic printing, security printing
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