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Flexographic printing device and method of simultaneously printing at least two material webs having different thicknesses

A technology for flexographic printing, material web, applied in the direction of the pad unit, the printing unit, the jacket of the printing press roll, etc.

Active Publication Date: 2020-11-20
ESSITY HYGIENE & HEALTH AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cushioning elements are not configured to compensate for variations in the thickness of the material to be printed

Method used

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  • Flexographic printing device and method of simultaneously printing at least two material webs having different thicknesses
  • Flexographic printing device and method of simultaneously printing at least two material webs having different thicknesses
  • Flexographic printing device and method of simultaneously printing at least two material webs having different thicknesses

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Experimental program
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Embodiment Construction

[0041] According to the invention, at least two material webs with different thicknesses are printed simultaneously in a common printing unit of a printing apparatus as described in more detail below. The material web can be used in absorbent articles. Thickness refers to the measure of the dimension of the material in a plane perpendicular to the machine direction and transverse plane of extension of the material web, also referred to herein as the Z direction. If the material is compressible, the thickness and average density of the material can be measured at a pressure of 0.5 kPa as described below.

[0042] A pressure of 0.5 kPa is applied to the nonwoven through a foot smaller than the sample area. The feet are placed within the area to be measured. The thickness of the sample is measured under this pressure. Cut out the samples from which the density is to be calculated, and calculate the surface weight of these samples from their mass / surface area (g / cm 2 ). Based...

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Abstract

The present disclosure relates to a flexographic printing device and a method of simultaneously printing at least two material webs having different thicknesses in the printing device. The flexographic printing device comprises a printing unit comprising a printing roller carrying on a surface thereof an image to be printed, an impression roller and an anilox roller adapted to feed printing ink from a printing ink chamber onto the printing cliche mounted on the printing roller. The printing unit is configured for simultaneously printing at least two material webs having different thicknesses,by means of adjusting the radial extension of the surface of the printing roller, impression cylinder and / anilox roller in respect of the material web to be printed.

Description

technical field [0001] The invention relates to a flexographic printing unit and a method of simultaneously printing in a printing unit at least two webs of material having different thicknesses, as defined in the appended claims. Background technique [0002] Absorbent articles for absorbing body fluids come in many different designs. To absorb urine and excreta, a diaper or incontinence guard is typically used, shaped to simulate a pair of underpants during use. There are other types of absorbent articles, such as feminine hygiene products. These products generally comprise a topsheet facing the user's body, a backsheet facing the user's garments, and an absorbent layer sandwiched between an inner topsheet and an outer backsheet. To increase the aesthetics and functionality of a particular item, graphics can be printed on various parts of the item. The absorbent article may comprise further structural elements adapted to improve the fit of the article to the body of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F5/24A61F13/15B41M1/04B41N6/00
CPCB41M1/04B41F5/24A61F13/84A61F2013/8497B41N7/06B41N7/04B41F13/18B41F13/10
Inventor P·布罗姆斯特伦L·帕姆奎斯特
Owner ESSITY HYGIENE & HEALTH AB
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