A design method of a circular pressing circular printing device for paper products

A technology of printing device and design method, applied in printing, printing machine, rotary printing machine and other directions, can solve the problems of product appearance being difficult to meet quality requirements, overprinting deviation, etc., to save time and improve production efficiency.

Active Publication Date: 2020-02-21
CHANGDE JINPENG PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above process, there are often overprint deviations in different processes between offline equipment and in the same equipment due to the expansion and deformation of paper under different equipment and tension, which makes the appearance of the produced products difficult to meet the quality requirements.

Method used

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  • A design method of a circular pressing circular printing device for paper products

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Embodiment 1

[0026] A design method for a rotary printing device for paper products. The rotary printing device for paper products includes a web gravure printing machine, a web positioning holographic hot stamping machine, and web embossing, indentation, and die-cutting. The bit-linked self-positioning paper splicing and roll changing die-cutting machine specifically includes the following steps:

[0027] (1) Determine the number of circumferential typesetting of the web gravure printing machine according to the length of a single piece of printing paper, wherein, the first theoretical perimeter=the length of a single piece×the circumferential typesetting number of the web gravure printing machine, and then Determine the circumference range of the printing plate of the web gravure printing machine according to the theoretical circumference;

[0028] The tension and air pressure setting method of the web gravure printing machine is as follows: according to the width L of the printing paper, ...

Embodiment 2

[0044] Purchase and manufacture a web gravure printing machine, a web positioning holographic hot stamping machine, and a web embossing, indentation, and die-cutting three-station linkage self-positioning paper splicing and roll changing die-cutting machine; Through the intensive process, a new production technology of round pressing is formed. Design the setting of process parameters of the whole line and the requirements for equipment production.

[0045] According to the process standards and size requirements of a certain product (taking the circumferential direction as 98mm as an example), determine the following process standards to determine the equipment specification configuration:

[0046] ① Gravure printing process: Considering the operation suitability of gravure printing, select 6 blocks × 98 = 588mm (corresponding to the first theoretical circumference), and according to this requirement, determine the equipment specifications (the printing plate circumference ra...

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Abstract

The invention discloses a design method for a paper product circular press printing device. The design method is to explore and select the process parameters of the whole line, mainly to set the tension of each process to ensure the normal operation of a single process (such as printing registration), and to ensure the normal operation of a single process. It is necessary to comprehensively consider the processing conditions throughout the entire line (such as the amount of paper expansion and deformation under tension), the temperature setting of each process, the base increment of the circumference of each color printing plate, the theoretical base of the embossed plate, the indented plate, and the die-cut plate. The actual increase or decrease, through this method, completely overcomes the overprint deviation of each process caused by the equipment accuracy and paper expansion and deformation in the process implementation plan, so that the appearance of the produced product meets the quality requirements. This design method realizes the design of the process parameters of the whole line, solves the problem of product registration between offline equipment of different processes in the roll-to-roll production process, and between different processes in the same equipment, and makes the registration deviation less than 0.15mm. The product ratio is raised to more than 98% (normal distribution).

Description

technical field [0001] The invention relates to the technical field of paper product printing, in particular to a design method of a paper product rotary press printing device. The design method can reduce waste products due to inaccurate registration and improve the qualified rate of paper products. Background technique [0002] In order to solve the problems that flat sheet paper is easily affected by environmental temperature and humidity in the multi-process processing process, resulting in more registration deviation waste products caused by paper expansion and deformation, and air bubbles in flat-press flat holographic hot stamping, etc., after scientific analysis and demonstration, a new method is proposed. A round-pressing processing method for web products, namely: seamless web printing → off-line web round-pressing holographic hot stamping → die-cutting (web round-pressing, embossing, indentation, die-cutting three The station is integrated and linked), adopting th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17B41F19/06
CPCB41F19/062G06F30/17
Inventor 徐军蔡华标邓强陈爱华欧立国
Owner CHANGDE JINPENG PRINTING
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