Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for producing coated linerboard or coated kraftboard at low cost and the coated linerboard or coated kraftboard produced by the method

A kraft cardboard, low-cost technology, applied in the field of pulp and papermaking, can solve the problems of whitening effect of raw pulp, reduced mechanical properties, high production cost, etc., to achieve the goal of increasing added value, reducing consumption, and reducing negative impact Effect

Inactive Publication Date: 2011-12-21
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cost of the former method is relatively high, and the latter direct coating method generally requires at least 50g / m 2 The coating amount of about 10000000000000000000000000, the paper becomes brittle and the mechanical properties are reduced
[0003] On the other hand, at present, most papers and fabrics with high whiteness are further improved by adding optical brightening agent (Optical Brightening Agent / OBA), but the whiteness of raw pulp has a great influence on the whitening effect of OBA

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for producing coated linerboard or coated kraftboard at low cost and the coated linerboard or coated kraftboard produced by the method
  • A method for producing coated linerboard or coated kraftboard at low cost and the coated linerboard or coated kraftboard produced by the method
  • A method for producing coated linerboard or coated kraftboard at low cost and the coated linerboard or coated kraftboard produced by the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for producing coated linerboard or coated kraftboard at low cost, the steps are as follows:

[0027] (1) Using the applicator, the primer is applied at a quantitative rate of 141g / m 2 On recycled cardboard paper with a whiteness of 15.8%, the primer coating includes: 60 parts of kaolin (more than 90% less than 2 microns), 40 parts (grade 55) of calcium carbonate, 7 parts of styrene-butadiene latex, 10 parts of starch, and others Coating additives include: dispersant (sodium polyacrylate), 0.2 part; defoamer (polyethylene glycol), 0.02 part; water-resistant agent (polyamide polyurea resin), 0.5 part; lubricant (calcium stearate) , 0.5 parts.

[0028] Coating amount is 10±1g / m 2 , the solid content of the coating is 50-68% (the same below).

[0029] (2) Using an applicator, apply the top coating on the primed recycled cardboard, wherein the top coating includes: 60 parts of fine-grained kaolin (more than 92% less than 2 microns), 40 parts of 95 grade calcium c...

Embodiment 2

[0033] A method for producing coated linerboard or coated kraftboard at low cost, the steps are as follows:

[0034] (1) Using a coating device, the primer is applied at a quantitative rate of 141g / m 2 On recycled cardboard paper, the coating includes 60 parts of kaolin (more than 90% less than 2 microns), 40 parts of calcium carbonate (grade 55), 7 parts of styrene-butadiene latex, 10 parts of starch, and other commonly used coating additives such as: dispersion agent, anti-water agent, defoamer, lubricant. Coating amount is 10±1g / m 2 .

[0035] (2) Using a coating device, the top coating is coated on the primed recycled cardboard, wherein the coating includes 60 parts of fine-grained kaolin (more than 92% is less than 2 microns), 40 parts of 95 grade calcium carbonate, 12 1 part of styrene-butadiene latex, 1 part of polyvinyl alcohol (PVA, as OBA carrier), 0.6 part of 4S type fluorescent whitening agent, and other commonly used coating additives such as: dispersant, water...

Embodiment 3

[0038] A method for producing coated linerboard or coated kraftboard at low cost, the steps are as follows:

[0039](1) Using a coating device, apply the primer coating at a quantitative rate of 141g / m 2 On recycled cardboard paper, the coating includes 60 parts of kaolin, 40 parts of 55-grade calcium carbonate, 8 parts of styrene-butadiene latex, 6 parts of starch, and other commonly used coating additives such as: dispersant, water-resistant agent, defoamer, lubricant. Coating amount is 10±1g / m 2 .

[0040] (2) Using a coating device, the top coating is coated on the primed recycled cardboard, wherein the coating includes 60 parts of kaolin (more than 92% is less than 2 microns), 40 parts of 95 grade calcium carbonate, 12 parts of butyl Benzene latex, 1 part of sodium carboxymethyl cellulose (CMC), 0.6 part of 4S type fluorescent whitening agent, other commonly used coating additives such as: dispersant, water resistant agent, defoamer, lubricant. Coating amount is 17±1g...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Burst indexaaaaaaaaaa
Burst indexaaaaaaaaaa
Burst indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to a coated box board or coated kraft liner, in particular to a coated box board / kraft liner and a method for producing the same at low cost. The method comprises the steps of coating prime coat on the box board or unbleached kraft liner and coating top coat on the box board or unbleached kraft liner, wherein the primer coat comprises starch; and the top coat comprises an optical brightening agent. The coated box board or coated kraft liner and the method have the following beneficial effects: the prime coat and the top coat do not have mandatory requirements for the rawmaterials and different quality of pigments can be used in the coat of different coatings, thus further saving the production cost, and the coating weight each time is lower, thus not only being beneficial to drying but also being beneficial to improvement of the production efficiency.

Description

technical field [0001] The invention belongs to the field of pulping and papermaking, and relates to coated linerboard or kraftboard, in particular to a low-cost method for producing coated linerboard / kraftboard and the coated linerboard / kraftboard produced by the method. Background technique [0002] Beautifully printed high whiteness coated boxboard (also known as coated kraft cardboard) is more and more widely used in commodity packaging. At present, there are two main ways to produce first-class coated boxboard or coated kraftboard (national standard GB / T 10335.5-2008 whiteness higher than 76%): one is to make paper on the surface of natural-colored boxboard Hang a layer of quantitative 30-40g / m 2 The white pulp, and then coated; the other is no white pulp, directly coated on the natural color boxboard to a whiteness higher than 76%. The production cost of the former method is relatively high, and the latter direct coating method generally requires at least 50g / m 2 If...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D21H19/54D21H21/30D21H19/82
CPCD21H19/385D21H19/40D21H21/30D21H19/54D21H19/822D21H19/58
Inventor 臧永华许英李星龙李洒
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com