CN112406263A

CN112406263A - High-precision bag making technology of PS (polystyrene) plate UV (ultraviolet) printing machine

Info

Publication number: CN112406263A
Application number: CN202011275017.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Wan Yunzhi
Current assignee: Wan Yunzhi
Priority date: 2020-11-08
Filing date: 2020-11-08
Publication date: 2021-02-26

Abstract

According to the invention, the traditional UV full-rotary printing machine, the flexo printing machine and the PS plate semi-rotary printing machine are utilized, the high-precision CTP hard aluminum plate or CTP hard aluminum plate embedded roller or 3D ultra-fine laser engraving fine aluminum surface roller is adopted to replace the traditional flexible resin plate roller of a flexo printing machine, a full-rotary UV printing machine and the like, the printing precision is greatly improved, the printed picture is finer, the minimum character height capable of being printed is lower than 0.2mm, fine ink dots can be seen in the patterns on the bag, the designable range is wider, and the bag with the fine patterns on the single-layer film can be obtained.

Description

High-precision bag making technology of PS (polystyrene) plate UV (ultraviolet) printing machine

Technical Field

The invention relates to a high-precision bag printing technology of a PS (polystyrene) plate UV (ultraviolet) printer, which is applied to the industries of food, health care products, medicines, clothes, cosmetics, ornaments, gifts, household articles, personal care, home furnishings and the like.

Background

The traditional bag printing adopts an intaglio printing machine, the intaglio printing machine needs to carve a copper plate, the current mainstream engraving adopts a mechanical needle head engraving or a common laser engraving, the precision is poor, and characters within 0.3mm of height cannot be engraved at all, namely dot matrix patterns; the traditional flexographic printing machine and the full-wheel printing machine on the market also adopt high-precision laser engraving plates, and because the flexographic printing machine is a flexographic printing plate resin material which is easy to deform under heating, printing points formed on the resin material by the flexographic printing machine are certainly much larger than the points of the laser, so that the precision of the resin plate is influenced, and characters with the height of less than 0.2mm are difficult to print; the traditional PS plate intermittent UV semi-rotary machine adopts CTP aluminum plate printing, the precision of the aluminum plate is very high, but the thin film material can not be directly printed because the equipment has no self-adaptive tension control device, the material has elasticity and can cause inaccurate registration, the more printing error is bigger, the thin film with the thickness of below 0.05mm can not be printed at all, the thickness of the thin film of the bag is generally only 0.012-0.03mm, the backing paper needs to be padded, so that the material can not stretch and deform, the printer is generally only suitable for printing various labels, adhesive stickers and the like, and the bag with the thickness of less than 0.05mm can not be printed; the traditional bag with the printed pattern is generally a composite bag, because the bag is reverse printed and is seen, ink is clamped between the film and the film, and if the ink is exposed outside, the ink is easily scraped, so the traditional gravure printing, flexo printing and the like can not be used as a single-layer film bag, but can be used as a multi-layer composite bag.

Disclosure of Invention

In order to use a high-precision CTP aluminum plate to print high-precision bags, the invention creates innovation on the structure of the traditional UV full-wheel printing machine or flexo printing machine, does not use a resin plate roller, and replaces a roller embedded with the CTP aluminum plate or a roller with an aluminum surface by direct 3D laser engraving as shown in the attached figure 2, because the UV full-wheel printing machine and the flexo printing machine have self-adaptive tension control devices to adapt to thin material printing, the printing precision of the film is improved by the innovation and far exceeds that of the traditional gravure press and the traditional full-wheel printing machine or flexo printing machine of the resin plate, and for a PS plate UV intermittent half-wheel printing machine, a film or a composite film with the thickness of more than or equal to 0.05mm is used for printing bags by using a material without stretching deformation.

The technical scheme is as follows:

designing the size of a roller, producing an aluminum plate by using a CTP publishing system, bending and embedding the aluminum plate with patterns into the roller or directly engraving the aluminum plate with the pattern into a 3D laser system with the diameter of 10um ultrafine light spots as shown in an attached figure 2, loading the aluminum plate into a full-wheel printing machine or a flexo printing machine, adjusting pressure and tension, loading materials for debugging, obtaining a high-precision printing film, and then making bags to obtain finished bags.

The specific implementation method comprises the following steps:

1. according to the area of the pattern, calculating the perimeter of the roller, converting the perimeter into the diameter of the roller, machining the roller with proper diameter and width as shown in figure 1, reserving 2 grooves on the roller, bending a CTP aluminum plate as shown in figure 1, and directly embedding the CTP aluminum plate into the roller, so that no obvious seam is formed as shown in figure 1; or directly engraving the aluminum surface roller plate shown in the attached figure 2 by adopting a 3D hyperfine laser system with the diameter of 10um light spots.

2. Coating a UV coating on the film to enable the film to absorb UV ink more easily, mounting the roller and the film material with the UV coating on a printing machine, loading the ink, adjusting the machine, adjusting a proper tension adapting material, and adjusting the position of the roller to enable the pattern registration to be accurate;

3. printing, compounding, making bags, or not compounding, directly making bags from a single-layer film, wherein the height of characters of the printed bags is less than 0.2mm, and the ink can be directly exposed outside and is waterproof and scratch-resistant, and if the composite bags are made, the ink can be exposed on the outermost layer and can also be sandwiched between multiple layers of films.

Has the advantages that:

Drawings

In the attached drawings of the specification of the invention, an attached drawing 1 is a key structure drawing, wherein, the drawing is a roller, a seam after an aluminum plate is embedded into the roller, and a CTP high-precision aluminum plate.

FIG. 2 shows an aluminum surface roller, wherein the roller can be made of aluminum or other materials, and the roller is made of aluminum.

Claims

1. A high-precision PS plate printing machine bag making technology implementation method is characterized in that: the method adopts a UV full-wheel transfer printing machine, a flexo printing machine or a PS intermittent UV wheel transfer machine, does not use a resin plate or copper plate roller, adopts a CTP aluminum plate or CTP aluminum plate wrapped roller or a direct hyperfine 3D laser engraving aluminum surface roller, and uses a film with the thickness more than or equal to 0.05mm if a PS intermittent semi-wheel transfer printing machine is used.

2. A method for implementing the bag making technique of claim 1, wherein: the height of the printed characters is less than or equal to 0.2mm, and fine ink dots can be seen in the patterns.

3. A method for implementing the bag making technique of claim 1, wherein: the bag adopts a single-layer film structure or a multi-layer film composite structure.

4. A method for implementing the bag making technique of claim 1, wherein: the bag ink is exposed to air and is water resistant and scratch resistant.

5. A method for implementing the bag making technique of claim 1, wherein: the bag ink is sandwiched between the multilayer films.

6. A method for implementing the bag making technique of claim 1, wherein: the technology is applied to the industries of food, health care products, medicines, clothes, cosmetics, ornaments, gifts, household articles, personal care, home decoration and the like.