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Laser anti-counterfeiting composite coating composition for polyester film self-adhesive labels

A technology of laser anti-counterfeiting and polyester film, applied in the direction of polyester paint, coating, etc., can solve the problems of incomplete laser rainbow effect, complicated use process, and paint can not be reused, so as to eliminate the problem of sticking and blocking the plate, The effect of wide molding temperature range, easy preparation and use

Active Publication Date: 2015-12-02
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing laser anti-counterfeiting composite coatings for polyester film self-adhesive labels are mainly oil-based two-component coatings. There will be various problems such as gel flocculation in the trough, which will cause the coating to be unusable, which not only wastes raw materials but also affects product quality; secondly, the coating film needs to be baked at high temperature for a long time in the drying tunnel to facilitate the full crosslinking reaction of the two components , the overall production efficiency is low; at the same time, there are also relatively large defects in the subsequent molding process, and it is very easy for the paint layer to adhere to the nickel plate, thereby blocking the grating and causing the laser rainbow effect to be incomplete. Its long-term development in the field of laser anti-counterfeiting polyester film self-adhesive labels

Method used

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  • Laser anti-counterfeiting composite coating composition for polyester film self-adhesive labels
  • Laser anti-counterfeiting composite coating composition for polyester film self-adhesive labels
  • Laser anti-counterfeiting composite coating composition for polyester film self-adhesive labels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The laser anti-counterfeiting composite coating composition for the polyester film self-adhesive label of the present embodiment is prepared using the raw materials of the components and contents shown in Table 1; the specific preparation includes the following process steps:

[0029] (1) 20 kilograms of acetone, 30 kilograms of n-propyl acetate and 20 kilograms of n-butyl acetate are all dropped into the reactor, and stirred evenly;

[0030] (2) Put 2.5 kilograms of cellulose acetate butyrate resin and 3 kilograms of nitrocellulose resin into the reaction kettle, stir at high speed for 1.5 hours until fully dissolved;

[0031] (3) 12 kilograms of straight-chain polyester resins and 12 kilograms of modified polyester resins were added to the reactor, stirred at high speed for 2.5 hours until fully dissolved;

[0032] (4) Slowly add 0.2 kg of leveling agent, 0.2 kg of slip agent, and 0.1 kg of drier into the reaction kettle in sequence, and stir well until they are evenl...

Embodiment 2

[0035] The laser anti-counterfeiting composite coating composition for the polyester film self-adhesive label of the present embodiment is prepared using the raw materials of the components and contents shown in Table 1; the specific preparation includes the following process steps:

[0036] (1) 40 kilograms of ethyl acetate and 40 kilograms of propylene glycol methyl ether are all dropped into the reactor, and stirred evenly;

[0037] (2) Put 4 kilograms of cellulose acetate propionate resin and 4 kilograms of nitrocellulose resin into the reaction kettle, stir at high speed for 1.5 hours until fully dissolved;

[0038] (3) 6 kilograms of polyester resins with a straight chain structure and 6 kilograms of polyester resins with a benzene ring structure are added to the reactor, stirred at high speed for 2.5 hours, until fully dissolved;

[0039] (4) Slowly add 0.01 kg of flow cross-linking agent into the reaction kettle, stir well until the dispersion is uniform.

[0040] The...

Embodiment 3

[0042] The laser anti-counterfeiting composite coating composition for the polyester film self-adhesive label of the present embodiment is prepared using the raw materials of the components and contents shown in Table 1; the specific preparation includes the following process steps:

[0043] (1) 34 kilograms of isopropanols, 20 kilograms of n-butanols and 20 kilograms of propylene glycol methyl ether acetate are all dropped into the reactor, and stirred;

[0044] (2) Put 1 kilogram of cellulose acetate butyrate resin, 2 kilograms of cellulose acetate propionate resin, and 1 kilogram of nitrocellulose cellulose resin into the reaction kettle, stir at high speed for 2.0 hours until fully dissolved;

[0045] (3) 6.7 kilograms of polyester resins with a linear structure, 3 kilograms of polyester resins containing a benzene ring structure, and 3 kilograms of modified polyester resins were added to the reactor, and stirred at high speed for 2.5 hours until fully dissolved;

[0046] ...

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Abstract

The invention discloses a laser anti-counterfeit composite coating composition for a polyester film self-adhesive label. The coating composition is composed of the following components by weight percent: 12-24% of polyester resin, 4-12% of cellulosic resin, 0.01-0.5% of auxiliaries and 70-80% of solvent. The laser anti-counterfeit composite coating composition for the polyester film self-adhesive label disclosed by the invention has the advantages of convenient coating preparation and utilization, good coating adaptability, good adhesion, wide mold pressing temperature range and the like; the problems of binding and blockage of a nickel plate caused by a coating layer are eliminated; the laser anti-counterfeit composite coating composition is especially prominent in laser anti-counterfeit effect.

Description

technical field [0001] The invention relates to a laser anti-counterfeiting composite coating, in particular to a laser anti-counterfeiting composite coating composition for polyester film self-adhesive labels. Background technique [0002] Self-adhesive labels are also called self-adhesive labels, sticky notes, and timely stickers. After printing, die-cutting and other processes, it becomes a finished label. When in use, as long as the backing paper is removed, the self-adhesive label printed with graphics and text can be directly pasted on the product or other objects. Compared with the traditional label, the self-adhesive label does not need to be glued or dipped in water. No pollution, can save labeling time, convenient and quick application in various occasions. At present, self-adhesive labels are gradually penetrating into all aspects of people's lives, especially the emergence of some self-adhesive labels with special properties, which greatly facilitates people's ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D101/14C09D101/18C08J7/04
Inventor 虞明东韩莲
Owner SHANGHAI WEIKAI CHEM