{"id":1122,"date":"2026-07-13T03:19:56","date_gmt":"2026-07-13T03:19:56","guid":{"rendered":"https:\/\/lypaperchem.com\/?p=1122"},"modified":"2026-07-16T03:30:13","modified_gmt":"2026-07-16T03:30:13","slug":"paper-sizing-agents-a-comprehensive-technical-overview-of-chemistry-classification-and-applications","status":"publish","type":"post","link":"https:\/\/lypaperchem.com\/pt\/paper-sizing-agents-a-comprehensive-technical-overview-of-chemistry-classification-and-applications\/","title":{"rendered":"Agentes de colagem do papel: uma vis\u00e3o geral t\u00e9cnica abrangente sobre a qu\u00edmica, a classifica\u00e7\u00e3o e as aplica\u00e7\u00f5es"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Agentes de colagem do papel: uma vis\u00e3o geral t\u00e9cnica abrangente sobre a qu\u00edmica, a classifica\u00e7\u00e3o e as aplica\u00e7\u00f5es<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. Introdu\u00e7\u00e3o: Os fundamentos do desempenho do papel<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os agentes de colagem do papel s\u00e3o aditivos qu\u00edmicos essenciais ao processo de fabrico do papel, concebidos para conferir resist\u00eancia \u00e0 \u00e1gua, \u00e0 tinta e a outros l\u00edquidos, melhorando simultaneamente a resist\u00eancia, a suavidade e a capacidade de impress\u00e3o do papel. Sem a colagem, a maioria dos produtos de papel absorveria l\u00edquidos de forma descontrolada, tornando-os inadequados para aplica\u00e7\u00f5es de escrita, impress\u00e3o ou embalagem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os agentes de colagem atuam modificando as propriedades superficiais das fibras de celulose. Estes produtos qu\u00edmicos possuem grupos moleculares tanto hidrof\u00edlicos como hidrof\u00f3bicos; quando aplicados \u00e0s fibras do papel, os grupos hidrof\u00f3bicos orientam-se para o exterior, criando uma barreira que repele os l\u00edquidos, mantendo simultaneamente a integridade estrutural do papel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O mercado global de agentes de colagem para papel continua a expandir-se, impulsionado pela crescente procura de pap\u00e9is de embalagem de alto desempenho e pela transi\u00e7\u00e3o para pr\u00e1ticas sustent\u00e1veis de fabrico de papel. S\u00f3 o mercado dos agentes de colagem para superf\u00edcies de papel foi avaliado em <strong>US$ 1 114 milh\u00f5es em 2024<\/strong> e prev\u00ea-se que atinja <strong>US$ 1 505 milh\u00f5es at\u00e9 2031<\/strong>, registando uma taxa de crescimento anual composta (CAGR) de 4,8%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LY Chem Technology Co., Ltd.<\/strong> , com mais de duas d\u00e9cadas de experi\u00eancia no fabrico de produtos qu\u00edmicos para a ind\u00fastria do papel, oferece uma gama abrangente de solu\u00e7\u00f5es de colagem \u2014 incluindo os nossos agentes de colagem \u00e0 base de resina de pinho LY-CRS e LY-ARS, os agentes de colagem AKD LY-AKD301 e LY-AKD302 e o agente de colagem superficial de estireno-acrilato LY-BB201 \u2014 concebidos para satisfazer as diversas necessidades dos fabricantes de papel modernos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2. Evolu\u00e7\u00e3o hist\u00f3rica: da gelatina aos sint\u00e9ticos modernos<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 A Era do Colagem com Gelatina<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No s\u00e9culo XVIII e no in\u00edcio do s\u00e9culo XIX, o colagem do papel era realizada predominantemente atrav\u00e9s de uma combina\u00e7\u00e3o de <strong>gelatina e al\u00famen<\/strong> (sulfato de alum\u00ednio). Este m\u00e9todo, embora eficaz, era dispendioso e moroso, o que limitava a capacidade de produ\u00e7\u00e3o de papel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 A Revolu\u00e7\u00e3o da Colof\u00f3nia e do Al\u00famen (1807)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A inven\u00e7\u00e3o de <strong>colagem com al\u00famen e resina de pinheiro<\/strong> A descoberta de Moritz Friedrich Illig, na Alemanha, em 1807, marcou um ponto de viragem na hist\u00f3ria da fabrica\u00e7\u00e3o de papel. A resina de pinheiro revelou-se significativamente mais barata do que a gelatina, o que permitiu a r\u00e1pida expans\u00e3o da ind\u00fastria do papel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Entre aproximadamente 1850 e 1950, o papel era colado internamente com resina de pinheiro e al\u00famen de papelaria, num pH \u00e1cido, normalmente entre 4 e 5. Este sistema \u00e1cido, embora econ\u00f3mico, impunha limita\u00e7\u00f5es significativas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Amarelecimento e fragiliza\u00e7\u00e3o do papel<\/strong>: As condi\u00e7\u00f5es \u00e1cidas favoreceram a hidr\u00f3lise das fibras<\/li>\n\n\n\n<li><strong>Corros\u00e3o do equipamento<\/strong>: O ambiente \u00e1cido acelerou o desgaste dos componentes da m\u00e1quina de fabrico de papel<\/li>\n\n\n\n<li><strong>Impossibilidade de utilizar enchimentos \u00e0 base de carbonato de c\u00e1lcio<\/strong>: Os enchimentos alcalinos n\u00e3o podiam ser utilizados em sistemas \u00e1cidos<\/li>\n\n\n\n<li><strong>Perman\u00eancia limitada do papel<\/strong>: Os pap\u00e9is \u00e1cidos degradaram-se com o passar do tempo<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 A Revolu\u00e7\u00e3o da AKD (1956)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O desenvolvimento de <strong>D\u00edmero de alquilceteno (AKD)<\/strong> Os agentes de colagem da Hercules Inc. na d\u00e9cada de 1950 \u2014 lan\u00e7ados comercialmente pela primeira vez em 1955 sob o nome de Aquapel \u2014 representaram uma mudan\u00e7a de paradigma na tecnologia de fabrico de papel. As emuls\u00f5es de AKD foram imediatamente aceites pelo mercado devido \u00e0 sua elevada efici\u00eancia e boa rela\u00e7\u00e3o custo-benef\u00edcio, em compara\u00e7\u00e3o com a colagem tradicional \u00e0 base de resina de pinheiro e al\u00famen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ao contr\u00e1rio do encolagem \u00e0 base de resina, que se baseia na deposi\u00e7\u00e3o f\u00edsica e nas intera\u00e7\u00f5es i\u00f3nicas, <strong>O AKD forma liga\u00e7\u00f5es covalentes com as fibras de celulose<\/strong>. Este mecanismo de liga\u00e7\u00e3o qu\u00edmica proporciona:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Efeitos de dimensionamento superiores e mais duradouros<\/strong> em compara\u00e7\u00e3o com a resina<\/li>\n\n\n\n<li><strong>Condi\u00e7\u00f5es neutras\/alcalinas na fabrica\u00e7\u00e3o de papel<\/strong>, reduzindo a corros\u00e3o do equipamento<\/li>\n\n\n\n<li><strong>Compatibilidade com cargas de carbonato de c\u00e1lcio<\/strong>, reduzindo os custos de produ\u00e7\u00e3o<\/li>\n\n\n\n<li><strong>Maior durabilidade do papel<\/strong> sem amarelecimento nem fragiliza\u00e7\u00e3o<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 O surgimento do colagem de superf\u00edcies<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A tecnologia de colagem superficial surgiu por volta de 1930, com a introdu\u00e7\u00e3o das prensas verticais de colagem superficial com rolos. Inicialmente limitada a aplica\u00e7\u00f5es especializadas, como o papel para notas de banco e o papel de seguran\u00e7a, a colagem superficial tornou-se um processo de tratamento de papel de rotina em toda a ind\u00fastria.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Atualmente, o revestimento de superf\u00edcie \u00e9 reconhecido como um processo indispens\u00e1vel na fabrica\u00e7\u00e3o moderna de papel, com aplica\u00e7\u00f5es que abrangem o papel para uso cultural, o papel para embalagens, o cart\u00e3o ondulado e os pap\u00e9is destinados ao contacto com alimentos.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3. Classifica\u00e7\u00e3o dos agentes de dimensionamento<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os agentes de colagem s\u00e3o, em termos gerais, classificados em duas categorias, com base no seu m\u00e9todo de aplica\u00e7\u00e3o: <strong>agentes de dimensionamento internos<\/strong> e <strong>agentes de colagem de superf\u00edcie<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 Agentes de colagem internos <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Os agentes de dimensionamento internos s\u00e3o adicionados \u00e0 pasta na sec\u00e7\u00e3o h\u00famida da m\u00e1quina de fabrico de papel. Atuam retardando a penetra\u00e7\u00e3o da \u00e1gua atrav\u00e9s da difus\u00e3o molecular e s\u00e3o distribu\u00eddos por toda a folha.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>As principais categorias incluem:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Agentes de colagem \u00e0 base de resina de colof\u00f3nia<\/strong> \u2014 O tradicional pilar da ind\u00fastria. O revestimento com resina de colof\u00f3nia requer, normalmente, condi\u00e7\u00f5es \u00e1cidas mantidas com al\u00famen (sulfato de alum\u00ednio). <strong>Granulometria da resina dispersa<\/strong> apresentam vantagens significativas em rela\u00e7\u00e3o aos colantes tradicionais \u00e0 base de resina saponificada, permitindo uma redu\u00e7\u00e3o de 30\u201350% no consumo tanto de resina como de sulfato de alum\u00ednio, ao mesmo tempo que possibilitam condi\u00e7\u00f5es de colagem neutras.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>D\u00edmero de alquilceteno (AKD)<\/strong> \u2014 Um agente de colagem reativo que forma liga\u00e7\u00f5es covalentes de \u00e9ster com as fibras de celulose. O AKD permite a produ\u00e7\u00e3o de papel em condi\u00e7\u00f5es neutras\/alcalinas, reduz a corros\u00e3o do equipamento e possibilita a utiliza\u00e7\u00e3o de enchimentos \u00e0 base de carbonato de c\u00e1lcio. No caso das pastas branqueadas, a adi\u00e7\u00e3o de AKD varia normalmente entre 0,10 e 0,30%.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Anidrido succ\u00ednico de alquenilo (ASA)<\/strong> \u2014 Outro agente de colagem reativo que forma rapidamente a camada de colagem na m\u00e1quina de papel. O ASA oferece a vantagem de a colagem se formar diretamente na m\u00e1quina, mas requer um manuseamento mais cuidadoso devido \u00e0 sua menor estabilidade da emuls\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 Agentes de colagem de superf\u00edcies <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Os agentes de colagem superficial s\u00e3o aplicados \u00e0 superf\u00edcie do papel j\u00e1 formado na prensa de colagem, normalmente perto do final da sec\u00e7\u00e3o de secagem. A colagem superficial cria uma pel\u00edcula protetora na superf\u00edcie da folha que inibe a absor\u00e7\u00e3o e o sangramento, ao mesmo tempo que une as fibras superficiais para reduzir a forma\u00e7\u00e3o de p\u00f3 e de fiapos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Entre os agentes de colagem de superf\u00edcie mais comuns contam-se:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Amido e derivados do amido<\/strong>: Os agentes de colagem de superf\u00edcie mais utilizados, que oferecem excelentes propriedades de forma\u00e7\u00e3o de pel\u00edcula e aumento da resist\u00eancia<\/li>\n\n\n\n<li><strong>Carboximetilcelulose (CMC)<\/strong> : Melhora a resist\u00eancia da superf\u00edcie e a capacidade de impress\u00e3o<\/li>\n\n\n\n<li><strong>\u00c1lcool polivin\u00edlico (PVA)<\/strong> : Proporciona propriedades de forma\u00e7\u00e3o de pel\u00edcula e resist\u00eancia ao \u00f3leo superiores<\/li>\n\n\n\n<li><strong>Copol\u00edmeros de estireno-anidrido maleico (SMA)<\/strong> : Pol\u00edmeros sint\u00e9ticos que melhoram significativamente a hidrofobicidade, a resist\u00eancia \u00e0 \u00e1gua, a capacidade de impress\u00e3o e o aspeto da superf\u00edcie<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. Propriedades f\u00edsico-qu\u00edmicas dos principais agentes de colagem<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 Granulometria da resina de pino dispersa<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A cola de resina dispersa apresenta v\u00e1rias vantagens em rela\u00e7\u00e3o \u00e0 cola de resina saponificada tradicional:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Poupan\u00e7a em produtos qu\u00edmicos<\/strong>: Reduz o consumo de colof\u00f3nia e de sulfato de alum\u00ednio em 30\u201350%<\/li>\n\n\n\n<li><strong>Capacidade de dimensionamento neutro<\/strong>: Permite condi\u00e7\u00f5es neutras de fabrico de papel, melhorando a resist\u00eancia \u00e0 \u00e1gua do papel<\/li>\n\n\n\n<li><strong>Temperatura ideal de emulsifica\u00e7\u00e3o<\/strong>: Os melhores resultados obt\u00eam-se entre 140 e 150 \u00b0C<\/li>\n\n\n\n<li><strong>Requisitos relativos aos dispersantes<\/strong>: 7\u20138% \u2014 o dispersante \u00e9 normalmente suficiente<\/li>\n\n\n\n<li><strong>Baixa forma\u00e7\u00e3o de espuma<\/strong>: Gera\u00e7\u00e3o m\u00ednima de espuma durante a produ\u00e7\u00e3o<\/li>\n\n\n\n<li><strong>Processo de produ\u00e7\u00e3o n\u00e3o t\u00f3xico<\/strong>: Produ\u00e7\u00e3o respeitadora do ambiente<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 AKD (d\u00edmero de alquilceteno)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O AKD \u00e9 um s\u00f3lido ceroso de cor amarelo-claro, com baixo ponto de fus\u00e3o (normalmente 43\u201355 \u00b0C), que \u00e9 insol\u00favel em \u00e1gua. As suas principais caracter\u00edsticas incluem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mecanismo de dimensionamento reativo<\/strong>: Forma liga\u00e7\u00f5es covalentes de \u03b2-ceto\u00e9ster com os grupos hidroxilo da celulose<\/li>\n\n\n\n<li><strong>Alta efici\u00eancia<\/strong>: \u00c9 necess\u00e1ria uma quantidade muito reduzida de AKD reagido para se obter uma colagem eficaz<\/li>\n\n\n\n<li><strong>Aplica\u00e7\u00e3o neutra\/alcalina<\/strong>: Funciona eficazmente num intervalo de pH entre 7 e 9<\/li>\n\n\n\n<li><strong>Requisitos de cura<\/strong>: Normalmente, 12 a 24 horas \u00e0 temperatura ambiente para que o colagem atinja o seu tamanho m\u00e1ximo<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 Agentes de revestimento de superf\u00edcie \u00e0 base de estireno-anidrido maleico (SMA)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Os copol\u00edmeros SMA s\u00e3o pol\u00edmeros sint\u00e9ticos sol\u00faveis em \u00e1gua ou dispers\u00edveis em \u00e1gua que oferecem:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hidrofobicidade superior<\/strong>: Excelente resist\u00eancia \u00e0 \u00e1gua<\/li>\n\n\n\n<li><strong>Melhor capacidade de impress\u00e3o<\/strong>: Melhor reten\u00e7\u00e3o da tinta e qualidade de impress\u00e3o<\/li>\n\n\n\n<li><strong>Surface strength improvement<\/strong>: Reduced dusting and picking<\/li>\n\n\n\n<li><strong>Porosity reduction<\/strong>: Seals surface pores for improved barrier properties<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. Manufacturing Methods<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 Rosin-Based Sizing Agents<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lignin-Rosin Sizing Agents<\/strong>: A preparation method involves dissolving lignin and rosin in anhydrous ethanol at a mass ratio of 1:0.25\u20134, followed by stirring and drying to obtain a powder product. This approach simplifies the preparation process while improving paper strength.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Anionic Rosin Sizing Agents<\/strong>: Produced using self-made anionic acrylic acid copolymers to emulsify rosin, with an optimal rosin-to-emulsifier mass ratio of 1:1.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 AKD Manufacturing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The conventional industrial method for AKD preparation uses triethylamine as an acid-binding agent to facilitate the self-polymerization of fatty acid chlorides, forming ring-structured alkyl ketene dimers (AKD).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Solvent-free AKD synthesis<\/strong> has emerged as the mainstream direction. This process eliminates organic solvents from production, addressing concerns about solvent residues and environmental impact.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5.3 Surface Sizing Agent Manufacturing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Styrene-Maleic Anhydride Copolymers<\/strong>: SMA surface sizing agents are produced through copolymerization of styrene and maleic anhydride. The ammonium salt of styrene-maleic anhydride has been identified as an effective surface sizing agent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Cationic Sizing Agents<\/strong>: Produced through the reaction of \u03b1-olefins with maleic anhydride, followed by imidization with polyamines containing tertiary and primary amino groups, and finally quaternization with epichlorohydrin in the presence of water.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. Application Strategies and Synergies<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">6.1 Internal Sizing Applications<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Internal sizing is suitable for applications where bulk water resistance is required:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Liquid packaging board<\/strong>: AKD provides excellent resistance to fruit juice, lactic acid, and other aggressive media<\/li>\n\n\n\n<li><strong>Corrugating medium<\/strong>: Provides compression resistance and moisture resistance<\/li>\n\n\n\n<li><strong>Pap\u00e9is para escrever e imprimir<\/strong>: Traditional rosin sizing or AKD sizing depending on quality requirements<\/li>\n\n\n\n<li><strong>Fruit bag paper<\/strong>: Water resistance to protect fruit from moisture damage<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.2 Surface Sizing Applications<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Surface sizing offers distinct advantages for applications requiring superior surface properties:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High-precision printing papers<\/strong>: Enhanced printability and surface smoothness<\/li>\n\n\n\n<li><strong>Packaging papers with graphics<\/strong>: Improved print quality and surface strength<\/li>\n\n\n\n<li><strong>Papers requiring reduced two-sidedness<\/strong>: Uniform surface properties<\/li>\n\n\n\n<li><strong>Food packaging papers<\/strong>: Surface barrier properties with regulatory compliance<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.3 The Synergy of Combined Sizing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In modern papermaking, internal and surface sizing are typically used in combination. This integrated approach offers multiple benefits:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Improved product quality<\/strong>: Enhanced surface properties and bulk strength<\/li>\n\n\n\n<li><strong>Reduced pollution<\/strong>: Lower chemical carryover in white water<\/li>\n\n\n\n<li><strong>Lower production costs<\/strong>: Optimized overall chemical usage<\/li>\n\n\n\n<li><strong>Greater formulation flexibility<\/strong>: Ability to fine-tune surface properties independently of wet-end chemistry<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">6.4 The &#8220;Lattice&#8221; Sizing Mechanism<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The sizing mechanism of AKD on paper has been proposed as a <strong>&#8220;lattice&#8221; mechanism<\/strong>. This theory suggests that AKD molecules form a regular, ordered arrangement on the cellulose fiber surface, creating a hydrophobic barrier through molecular organization rather than simply through random deposition.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">7. Market Trends and Future Outlook<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">7.1 Market Growth<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The global sizing agents market continues to expand:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Paper Surface Sizing Agents market<\/strong>: US$ 1,114 million (2024), projected to US$ 1,505 million (2031), CAGR 4.8%<\/li>\n\n\n\n<li><strong>Surface Sizing Agents market (broader)<\/strong>: USD 825.9 million (2025), projected to USD 1.12 billion (2032), CAGR 4.5%<\/li>\n\n\n\n<li><strong>Europe market<\/strong>: Expected to grow from US$ 306.22 million (2024) to US$ 409.80 million (2031), CAGR 4.43%<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">7.2 Key Market Drivers<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>E-Commerce Growth<\/strong>: With e-commerce packaging volumes projected to grow at over 14% annually through 2025, paper-based packaging solutions require high-performance sizing agents to enhance water resistance and printability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sustainability Mandates<\/strong>: The global shift toward sustainable packaging solutions is driving growth in the paper and paperboard industry, subsequently boosting demand for sizing agents.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Bio-Based Sizing Agents<\/strong>: The rising preference for bio-based sizing agents to meet environmental regulations and sustainability goals is a key market trend.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Printing Technology Evolution<\/strong>: The proliferation of digital and high-speed printing technologies continues to raise quality expectations for paper surfaces.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">7.3 Future Innovations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Enzyme-modified starches<\/strong>: Offering superior viscosity stability and mechanical strength<\/li>\n\n\n\n<li><strong>Nanocellulose-enhanced sizing<\/strong>: Combining traditional sizing agents with cellulose nanomaterials<\/li>\n\n\n\n<li><strong>Bio-based sizing agents<\/strong>: Responding to the demand for renewable, biodegradable alternatives<\/li>\n\n\n\n<li><strong>Solvent-free manufacturing<\/strong>: Eliminating organic solvents from production processes<\/li>\n\n\n\n<li><strong>Smart sizing systems<\/strong>: Real-time monitoring and control of sizing application<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">8. Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Paper sizing agents have evolved dramatically over the past two centuries\u2014from gelatin and alum in the 18th century, through the rosin-alum revolution of 1807, to the AKD revolution of 1956, and continuing today with advanced synthetic and bio-based formulations. This evolution reflects the paper industry&#8217;s ongoing pursuit of higher quality, greater sustainability, and improved operational efficiency.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key takeaways:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sizing is essential<\/strong>: With few exceptions, nearly all paper products require sizing<\/li>\n\n\n\n<li><strong>Two complementary approaches<\/strong>: Internal sizing provides bulk water resistance; surface sizing delivers superior surface properties<\/li>\n\n\n\n<li><strong>Chemistry matters<\/strong>: Rosin sizing relies on physical deposition; AKD forms covalent bonds with cellulose<\/li>\n\n\n\n<li><strong>Sustainability drives innovation<\/strong>: Bio-based and solvent-free sizing agents are emerging as key trends<\/li>\n\n\n\n<li><strong>Market growth is robust<\/strong>: The global sizing agents market continues to expand, driven by packaging growth and sustainability mandates<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>LY Chem Technology Co., Ltd.<\/strong> , with over two decades of experience in paper chemicals manufacturing, offers a comprehensive range of sizing solutions:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>LY-CRS (Cationic Highly Dispersed Rosin Size)<\/strong> : Lower aluminum sulfate consumption, near-neutral sizing for food-grade applications<\/li>\n\n\n\n<li><strong>LY-ARS (Anionic Highly Dispersed Rosin Size)<\/strong> : Tolerant of high-hardness white water, complete replacement for traditional saponified rosin size<\/li>\n\n\n\n<li><strong>LY-AKD301 (Internal AKD Sizing Agent)<\/strong> : Superior water resistance and aging resistance for cultural paper, coated paper, and packaging base paper<\/li>\n\n\n\n<li><strong>LY-AKD302 (Surface AKD Sizing Agent)<\/strong> : Enhanced ring crush strength and burst strength for corrugating medium and linerboard<\/li>\n\n\n\n<li><strong>LY-BB201 (Styrene-Acrylate Surface Sizing Agent)<\/strong> : Cationic emulsion that partially replaces internal sizing while improving ring crush strength and water resistance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">As the global paper industry continues its transition toward sustainable, high-performance papermaking, LY Chem remains committed to providing innovative chemical solutions that empower papermakers to meet the challenges of tomorrow\u2014today.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\"><em>For more information about LY Chem&#8217;s sizing solutions and our complete range of papermaking chemicals, please contact our technical sales team.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Refer\u00eancias<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Paper sizing with alkyl ketene dimers \u2013 ScholarWorks, WMU<\/li>\n\n\n\n<li>The Genesis of Alkaline Sizing \u2013 cool.culturalheritage.org<\/li>\n\n\n\n<li>Rosin sizing history \u2013 Wikipedia \/ Conservation sources<\/li>\n\n\n\n<li>AKD sizing history \u2013 Hercules Inc., 1956 (De Gruyter \/ Museum Conservation Institute)<\/li>\n\n\n\n<li>Surface sizing compositions \u2013 Styrene-maleic anhydride copolymers (Patents \/ CNKI)<\/li>\n\n\n\n<li>Paper Surface Sizing Agents Market Report 2025-2031 \u2013 QY Research<\/li>\n\n\n\n<li>Surface Sizing Agents Market Outlook 2025-2032 \u2013 24Chemical Research<\/li>\n\n\n\n<li>Dispersed rosin size properties \u2013 IPPTA<\/li>\n\n\n\n<li>AKD synthesis \u2013 Solvent-free methods (Patents \/ Journal sources)<\/li>\n\n\n\n<li>Sizing agents classification \u2013 Baidu Baike<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>","protected":false},"excerpt":{"rendered":"<p>Paper Sizing Agents: A Comprehensive Technical Overview of Chemistry, Classification, and Applications 1. Introduction: The &#8230; <a title=\"Agentes de colagem do papel: uma vis\u00e3o geral t\u00e9cnica abrangente sobre a qu\u00edmica, a classifica\u00e7\u00e3o e as aplica\u00e7\u00f5es\" class=\"read-more\" href=\"https:\/\/lypaperchem.com\/pt\/paper-sizing-agents-a-comprehensive-technical-overview-of-chemistry-classification-and-applications\/\" aria-label=\"Leia mais sobre Paper Sizing Agents: A Comprehensive Technical Overview of Chemistry, Classification, and Applications\">Leia mais<\/a><\/p>","protected":false},"author":1,"featured_media":1129,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-1122","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-insights","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"_links":{"self":[{"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/posts\/1122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/comments?post=1122"}],"version-history":[{"count":1,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/posts\/1122\/revisions"}],"predecessor-version":[{"id":1123,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/posts\/1122\/revisions\/1123"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/media\/1129"}],"wp:attachment":[{"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/media?parent=1122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/categories?post=1122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lypaperchem.com\/pt\/wp-json\/wp\/v2\/tags?post=1122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}