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Method of manufacturing decorated leather

A leather and positioning device technology, applied in the field of manufacturing of decorated natural leather, can solve the problems of long production time, long waiting time, poor inkjet printing head, prolonged ink consumption, etc.

Active Publication Date: 2021-05-25
AGFA NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But applying all of said leather pieces from inkjet printing station to printing station is labor intensive work which results in long production times where no ink is consumed
Long wait times between prints are not good for inkjet printheads as the skilled person knows
This can be avoided by regular maintenance of the inkjet printheads, but this also results in an extension of the long production times and ink consumption when maintaining the inkjet printheads

Method used

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  • Method of manufacturing decorated leather
  • Method of manufacturing decorated leather
  • Method of manufacturing decorated leather

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0096] The preparation of pigmented UV curable inkjet inks is well known to the skilled person. Preferred preparation methods are disclosed in paragraphs [0076] to [0085] of WO 2011 / 069943 (AGFA).

[0097] top coat

[0098] A topcoat can be applied over the decorative image and basecoat to enhance the scratch resistance of the decorative image.

[0099] The topcoat can be applied as a single layer, or can be applied as multiple layers. Multiple layers may even have different compositions to improve properties such as scratch resistance.

[0100] The protective top coat can have the same or similar composition as the base coat. Protective top coats are usually slightly optimized depending on the leather application. For example, in contrast to leather shoes, flexibility does not play a significant role in leather book covers. Thus, protective topcoats for book covers can be optimized for scratch resistance.

[0101] The topcoat preferably comprises a crosslinker and a pol...

Embodiment

[0120] The figures from 2 to 4 show some preferred embodiments of the invention. The half leather (700) is applied to the conveyor belt (100) against the positioning device (105). By conveying (shown as arcuate arrows in the pulleys) and moving the temporary carrier (200) containing the adhesive layer (205) as the top layer, the aligned half-tanned leather is laminated on the temporary on the carrier (200). Subsequently, the laminated and aligned semi-tanned leather is flattened with a leveler (300) to avoid collision with the printing head when printing using the inkjet printing head (400). The inkjet printed image is then cured by a curing device (500).

[0121] figure 2 The conveyor belt is shown horizontally. image 3 An inclined conveyor belt is shown (at an angle). Figure 4 A particular conveyor belt system is shown with a fixed knife edge shown in the output position.

[0122] List of reference symbols

[0123] 100 conveyor belt

[0124] 105 positioning device...

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Abstract

A manufacturing method of decorated natural leather including the steps of applying a crusted leather, having a corium side, a grain side and an edge, on a conveyor system, having a position means, and aligning said crusted leather by moving said edge against said position means; and laminating said aligned crusted leather on a temporary carrier, having an adhesive layer, wherein said corium side is attached by said adhesive layer on said temporary carrier while conveying said crusted leather on said conveyor system towards said temporary carrier and moving said temporary carrier relative to said conveyor system; and inkjet printing on said grain side with one or more pigmented inkjet inks an image by an inkjet printing system.

Description

technical field [0001] The present invention relates to the manufacture of decorated natural leather. Background technique [0002] The manufacture of natural leather goods is well known, and as figure 1 Shown can generally be divided into five stages. Preparation stage 1 often takes place partly in the slaughterhouse and partly in the tannery, while stages 2 to 4 take place in the tannery and stage 5 takes place at the leather goods manufacturer. In the first stage, the preparation stage, the skin is removed (skinned) from the animal and pre-treated for the second stage of tanning. Pretreatment may involve processes such as soaking, liming, unhairing, flaking and pickling (pH adjustment to aid tanning agent penetration). During the tanning stage, the proteins of the hide or hide are converted into a stable substance that does not rot. Chromium is most commonly used as a tanning agent, whereby the tanned product obtains a light blue color and is therefore often referred ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14B1/56C14C7/00C14C11/00C09D175/04
CPCC09D175/04C14B1/56C14C7/00C14C11/006C09J7/38B41M5/0076B41M5/0047
Inventor L·德勒克
Owner AGFA NV