The influence of the composition of pulp and the number of layers on the strength properties of multi-layer papers intended for the production of corrugated paperboard

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2024-07-17 DOI:10.15376/biores.19.3.6025-6045

Karolina Radomska, Konrad Olejnik, Piotr Pospiech

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Abstract

This research investigated the influence of the layered structure of paper on its selected strength properties. Two types of cellulose pulp were used: unbleached kraft pine pulp (UBSK) and unrefined bleached birch kraft pulp (BHK). Multi-ply papers were obtained from layers of appropriate grammage formed separately and bonded in a wet state. Paper layers were formed from primary pulps (UBSK and BHK) or their mixtures (three-ply UBSK-BHK paper and three-ply UBSK-BHK-UBSK paper), from which various variants of laboratory paper samples were made. This work focused on three-layer papers. The obtained laboratory sheets were analysed for changes in tear resistance, tensile strength, bursting strength, short span compression strength (SCT), and corrugating medium test (CMT). In most cases, three-layer structures were characterised by higher strength parameters than single-layer papers. The tear strength and SCT of papers consisting of three layers formed from both mixed pulps were slightly lower than those of solid papers. The results demonstrate the feasibility of producing three-ply paper with significantly reduced variability in parameters such as elongation and bursting strength, which are inherently subject to high variability.

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纸浆成分和层数对用于生产瓦楞纸板的多层纸强度特性的影响

这项研究调查了纸张的层状结构对其选定强度特性的影响。使用了两种纤维素纸浆：未漂白松木牛皮浆（UBSK）和未漂白桦木牛皮浆（BHK）。多层纸由适当克重的纸层分别形成，并在湿态下粘合而成。纸层由原浆（UBSK 和 BHK）或它们的混合物（三层 UBSK-BHK 纸和三层 UBSK-BHK-UBSK 纸）形成，并由此制成各种实验室纸样。这项工作的重点是三层纸。对获得的实验室纸张进行了抗撕裂性、抗张强度、爆破强度、短跨度压缩强度（SCT）和瓦楞介质测试（CMT）的变化分析。在大多数情况下，三层结构的强度参数高于单层纸。由两种混合浆形成的三层纸的撕裂强度和短跨度压缩强度略低于实心纸。这些结果证明了生产三层纸的可行性，同时大大降低了伸长率和破裂强度等参数的变异性，而这些参数本身的变异性就很高。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.