{"id":1340,"date":"2026-05-20T11:29:41","date_gmt":"2026-05-20T03:29:41","guid":{"rendered":"https:\/\/extruder-lab.com\/?p=1340"},"modified":"2026-05-14T18:08:04","modified_gmt":"2026-05-14T10:08:04","slug":"application-of-hot-melt-extrusion-technology","status":"publish","type":"post","link":"https:\/\/extruder-lab.com\/fr\/application-of-hot-melt-extrusion-technology.html","title":{"rendered":"Application de la technologie d'extrusion par fusion \u00e0 chaud aux dispersions solides pharmaceutiques"},"content":{"rendered":"

I. Technical Principles and Advantages for hot melt extrusion<\/h3>\n\n\n\n

Hot melt extrusion (HME) technology utilizes thermodynamic and kinetic principles to transport, shear, melt, and mix active pharmaceutical ingredients (APIs), polymer carriers, and functional excipients within a heated barrel using intermeshing screws. This forms a uniform and continuous melt, which is then extruded through a die and cooled to solidify, dispersing the crystalline drug at the molecular level or in an amorphous form within the polymer matrix. Compared to traditional formulation processes, Hot melt extrusion offers the following significant advantages:<\/p>\n\n\n\n

It is a solvent-free technology, completely avoiding the use of organic solvents and the associated environmental pollution, residual solvents, and drying steps. It enables continuous production, completing the process from material input to final product in one step, with significantly higher process reproducibility and automation levels than traditional batch methods. HME reduces system viscosity through high-temperature shearing, allowing for more flexible excipient selection and direct extrusion into desired shapes (such as strips, sheets, or films), reducing subsequent processing steps.<\/p>\n\n\n\n

Notably, Hot melt extrusion technology fully complies with the Process Analysis Technology (PAT) framework requirements proposed by the US FDA. During extrusion, key parameters such as temperature, pressure, and torque can be monitored in real time, ensuring batch-to-batch quality consistency.<\/p>\n\n\n\n

\"hot<\/figure>\n\n\n\n

II. Carrier Materials and Formulation Design<\/h3>\n\n\n\n

The choice of polymer carrier is the cornerstone of HME solid dispersion development, determining the drug’s solubility, dissolution rate, physical stability, and release behavior. The carrier matrices used in marketed HME formulations mainly fall into three categories: copovidone (PVP\/VA), hydroxypropyl methylcellulose acetate succinate (HPMCAS), and hydroxypropyl methylcellulose (HPMC).<\/p>\n\n\n\n

In practical development, a single carrier often struggles to simultaneously meet both solubilization and stability requirements. One study showed that combining HPMC with PVP\/VA or PVP can achieve a synergistic effect: HPMC significantly improves the oral absorption performance of the drug, while PVP-based polymers enhance the physical stability of the solid dispersion during storage by increasing the glass transition temperature (Tg). This “functionally complementary” formulation design approach has become a trend in HME formulation development.<\/p>\n\n\n\n

Furthermore, excipients such as plasticizers, surfactants, and flow aids are often incorporated into the formulation to lower processing temperatures, improve melt flowability, promote drug dissolution, and prevent extrudate sticking.<\/p>\n\n\n\n

III. Process Parameter Optimization and Quality Evaluation <\/h3>\n\n\n\n

The core of the HME process lies in the precise control of two key parameters: extrusion temperature and screw speed. The extrusion temperature must ensure sufficient melting of the polymer carrier while preventing thermal degradation of the API or polymer. Screw speed directly affects the residence time and mixing intensity of the material in the barrel, thus influencing the uniformity of drug dispersion within the carrier. Studies have shown that the preparation of hot-melt extruded solid dispersions of the poorly soluble drug olaparib requires systematic optimization of parameters such as the API\/polymer ratio, extrusion temperature, and screw speed through orthogonal experiments, using dissolution rate as the evaluation index to determine the optimal process window.<\/p>\n\n\n\n

Regarding quality evaluation, drug review agencies emphasize the importance of focusing on the drug’s ability to retain its amorphous form and its in vitro dissolution behavior. Simultaneously, under long-term accelerated storage conditions, the physical stability of the solid dispersion should be continuously monitored to promptly identify aging issues such as drug recrystallization or phase separation.<\/p>\n\n\n\n

IV. Drug Solubilization and Bioavailability Enhancement <\/h3>\n\n\n\n

Hot melt extrusion significantly improves the apparent solubility and dissolution rate of poorly soluble drugs by forming amorphous solid dispersions (ASDs). Compared to traditional solubilization technologies such as micronization and cyclodextrin inclusion complexation, ASD (anti-saturation distillation) allows drugs to reach a supersaturated state at the gastrointestinal absorption site, thereby significantly improving in vivo absorption and exposure levels.<\/p>\n\n\n\n

As a solvent-free, scalable, and highly efficient continuous process, HME (High-density Medicinal Extraction) converts crystalline drugs into ASD, significantly enhancing their dissolution rate and oral bioavailability. Numerous studies have confirmed the successful application of this technology in the formulation development of various BCS Class II and IV drugs, including representative varieties such as itraconazole, posaconazole, and carbamazepine.<\/p>\n\n\n\n

V. Expanding Multifunctional Applications <\/h3>\n\n\n\n

The applications of HME have long since transcended the simple solubilization domain, extending into multiple functional directions.<\/p>\n\n\n\n

In taste masking technology, “locking” bitter API molecules within a polymer network during extrusion effectively shields the drug from contact with oral taste buds, significantly improving patient compliance, especially suitable for children and the elderly.<\/p>\n\n\n\n

In the field of sustained-release and controlled-release drug delivery systems, by selecting different types and proportions of sustained-release polymers, the drug release rate can be precisely controlled, achieving various release modes such as zero-order release, pulsatile release, or pH-dependent release to meet the treatment needs of different diseases.<\/p>\n\n\n\n

In oral films and implantable formulations, the extruded strip system can be directly cut into the required size, resulting in a simple and efficient process. Its combined application with 3D printing technology further expands the possibilities of personalized medicine, allowing for customized dosages and formulations based on individual patient needs.<\/p>","protected":false},"excerpt":{"rendered":"

I. Technical Principles and Advantages for hot melt extrusion Hot melt extrusion (HME) technology utilizes thermodynamic and kinetic principles to transport, shear, melt, and mix active pharmaceutical ingredients (APIs), polymer carriers, and functional excipients within a heated barrel using intermeshing screws. This forms a uniform and continuous melt, which is then extruded through a die […]<\/p>\n","protected":false},"author":2,"featured_media":1341,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[12],"tags":[30],"class_list":["post-1340","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company-news","tag-hot-melt-extrusion-granulator"],"_links":{"self":[{"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/posts\/1340","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/comments?post=1340"}],"version-history":[{"count":2,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/posts\/1340\/revisions"}],"predecessor-version":[{"id":1344,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/posts\/1340\/revisions\/1344"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/media\/1341"}],"wp:attachment":[{"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/media?parent=1340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/categories?post=1340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/extruder-lab.com\/fr\/wp-json\/wp\/v2\/tags?post=1340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}