Excelência em Éter de Celulose — Confiável por mais de 1000 empresas globalmente Obter amostra grátis
LANDERCOLL éter de celulose de grau farmacêutico suporta sistemas de revestimento de comprimidos com desempenho confiável de formação de filme, viscosidade estável, aplicação suave de revestimento, cobertura uniforme da superfície e qualidade consistente de revestimento.
Desde revestimento por filme transparente e revestimento pigmentado até revestimento protetor, revestimento colorido e sistemas de revestimento de liberação imediata — selecionar o grau de viscosidade de HPMC e a formulação de revestimento corretos é fundamental para alcançar aparência uniforme do comprimido e estabilidade do processo.
— HPMC · Hipromelose · Revestimento por Filme · Revestimento de Comprimidos · Uniformidade de Revestimento · USP · EP · JP
Revestimento de Filme
Revestimento Pigmentado
Uniformidade do Revestimento
Proteção de Superfície
Aplicações de revestimento de comprimidos exigem produtos adequados de éter de celulose de grau farmacêutico e documentação apropriada. Nem todo grau de éter de celulose é adequado para uso farmacêutico.
Antes da avaliação ou aplicação comercial, os clientes devem confirmar as especificações do produto, Ficha de Dados Técnicos, Ficha de Dados de Segurança, Certificado de Análise, informações relacionadas à farmacopeia e quaisquer documentos regulatórios ou de qualidade necessários, de acordo com sua forma farmacêutica, mercado-alvo e processo interno de qualificação.
HPMC (hipromelose) é o polímero formador de filme primário em sistemas de revestimento de comprimidos farmacêuticos. Ele se dissolve ou dispersa em líquidos de revestimento, pulveriza de forma consistente e seca formando um filme uniforme que melhora a aparência do comprimido, fornece proteção superficial e suporta a estabilidade do processo de revestimento. O desempenho final do revestimento depende do grau de viscosidade do HPMC, concentração do polímero, tipo de plastificante, sistema de pigmentos, parâmetros de pulverização e da formulação completa do revestimento.
Filme · Uniformidade · Proteção Superficial
A revestição de comprimidos é um processo importante na fabricação de formas farmacêuticas sólidas. Pode melhorar a aparência do comprimido, mascarar sabor ou odor desagradável, facilitar o manuseio do comprimido, proteger a superfície do comprimido, melhorar a deglutição e proporcionar desempenho de revestimento funcional dependendo do design da formulação.
LANDERCOLL fornece grau farmacêutico adequado HPMC (Hidroxipropil Metilcelulose), também conhecida como hipromelose, para sistemas de revestimento de comprimidos farmacêuticos. A HPMC é amplamente utilizada como polímero formador de filme, pois pode formar um filme de revestimento uniforme quando adequadamente dissolvida, pulverizada, seca e formulada com plastificantes, pigmentos e outros ingredientes de revestimento adequados.
Um grau adequado de HPMC ajuda as formulações de revestimento a alcançar viscosidade estável, boa pulverizabilidade, formação suave de filme, cobertura uniforme e aparência consistente dos comprimidos. É especialmente útil em revestimento de filme de liberação imediata, revestimento protetor, revestimento colorido, sistemas de revestimento de comprimidos sensíveis à umidade e conceitos selecionados de revestimento funcional.
Procurando HPMC de grau farmacêutico para seu sistema de revestimento de comprimidos?
Solicite uma Recomendação de ProdutoO revestimento de comprimidos requer um polímero que possa dissolver ou dispersar adequadamente, formar uma solução de revestimento estável, pulverizar de forma consistente, secar em um filme uniforme e manter resistência e aparência adequadas do filme. Sem um polímero formador de filme adequado, os revestimentos podem apresentar cobertura deficiente, aparência irregular, rachaduras, descamação, aspereza, aderência, colagem ou desempenho inconsistente entre lotes.
Um sistema típico de revestimento de comprimidos inclui um polímero formador de filme, plastificantes, pigmentos e excipientes funcionais — cada um influenciando a aparência do revestimento, o desempenho do processo e a qualidade final do comprimido.
| Componente | Function in Tablet Coating |
|---|---|
| HPMC / Polímero Formador de Filme | Forma o filme principal do revestimento |
| Plastificante | Melhora a flexibilidade do filme e reduz a fragilidade |
| Pigmentos / Corantes | Fornecem cor e identificação ao comprimido |
| Opacificantes | Melhoram a opacidade e a aparência |
| Agentes Antiaderentes | Reduzem a aderência durante o processo de revestimento |
| Sistema de Água / Solvente | Dissolve ou dispersa os ingredientes do revestimento |
| Agentes Suspensores | Ajudam a manter a distribuição uniforme de ingredientes insolúveis |
| Modificadores de pH | Ajustar as condições do sistema de revestimento quando necessário |
| Outros Excipientes Funcionais | Ajustar aparência, proteção, comportamento de liberação ou desempenho do processo |
A LANDERCOLL fornece HPMC de grau farmacêutico como o principal polímero formador de filme para revestimento de comprimidos, com graus selecionados de CMC para sistemas de revestimento especializados. Todas as seleções de grau devem ser confirmadas por meio de testes de revestimento e qualificação do cliente.
Hipromelose para sistemas de revestimento de comprimidos formadores de filme
HPMC é o principal produto de éter de celulose da LANDERCOLL para aplicações de revestimento de comprimidos. HPMC de grau farmacêutico adequado pode ser usado como polímero formador de filme em formulações de revestimento onde são necessários viscosidade estável, boa formação de filme, pulverização suave e cobertura superficial uniforme. Dependendo da formulação e do processo, a HPMC pode ser usada em revestimentos transparentes, revestimentos pigmentados, revestimentos protetores, revestimentos coloridos e sistemas de revestimento funcional selecionados.
Derivado de celulose selecionado para suporte de viscosidade, suspensão e estabilização
CMC geralmente não é o principal polímero formador de filme para revestimento padrão de comprimidos, mas CMC de grau farmacêutico adequado pode ser usado em sistemas selecionados onde são necessários controle de viscosidade, estabilidade de suspensão ou desempenho de estabilização. Seu uso deve ser avaliado de acordo com a forma farmacêutica, sistema de formulação, processo de revestimento e documentação necessária.
Diferentes sistemas de revestimento de comprimidos exigem diferentes direções de viscosidade de HPMC e estratégias de formulação.
Film clarity, smooth coating, sprayability
Pigment suspension, film uniformity, stable viscosity
Surface protection, film strength, coating consistency
Uniform color, smooth appearance, pigment stability
Fast coating process, thin film formation, tablet appearance
Surface protection, film integrity, process stability
Specific performance target, process compatibility
Suspension stability, spray consistency, uniform coverage
The dosage of HPMC in tablet coating depends on coating type, solution viscosity, solids content, target film thickness, tablet core properties, spray process, and desired coating weight gain.
HPMC concentration in the coating liquid is usually selected according to viscosity, sprayability, and solids content. Coating weight gain is determined by the final dosage-form requirement. Final values should be confirmed through formulation testing, coating process trials, appearance evaluation, disintegration or dissolution testing, and customer validation.
Depends on coating solids and target film thickness
Depends on pigment loading and suspension stability
Depends on surface protection target
Depends on opacity and color uniformity requirement
Usually selected for low to moderate coating weight gain
Depends on dosage form and performance target
Depends on solids content, viscosity, and sprayability
Depends on formulation and validation requirements
HPMC helps form a continuous film on the tablet surface after spraying and drying. A good film-forming polymer supports smooth appearance, complete surface coverage, and coating integrity — the foundation of all tablet coating performance requirements.
Coating solution viscosity directly affects spraying, atomization, surface coverage, drying behavior, and process efficiency. HPMC grade and concentration should be selected to achieve a stable viscosity suitable for the specific coating equipment and process parameters being used.
Uniform coating is critical for appearance, identification, handling performance, and functional consistency. HPMC supports even film formation when properly formulated, dissolved, and processed — helping reduce batch-to-batch variation in coating quality.
A suitable HPMC coating can help protect the tablet surface from abrasion, dusting, handling damage, and selected environmental exposure depending on the complete coating system design and storage conditions.
In pigmented coating systems, all coating ingredients must remain uniformly suspended throughout the spraying process. HPMC can help support coating suspension stability and more consistent color distribution across the tablet batch.
A stable coating solution or suspension helps improve spray consistency and reduce common process issues such as nozzle blockage, uneven coverage, tablet sticking, or rough surface appearance during the coating run.
Tablet coating can significantly improve color, gloss, smoothness, branding recognition, and final product appearance. HPMC supports smooth film formation and stable coating performance that contributes to a professional, consistent tablet finish.
When tablet coating performance fails during development or production, HPMC grade, coating formulation, and process parameters are often the first variables to review.
Poor viscosity control, weak spray consistency, tablet movement issues.
Supports stable coating liquid viscosity when properly selected and hydrated.
Poor atomization, high viscosity, fast drying, pigment instability.
Helps control viscosity and film formation for smoother coating appearance.
Brittle film, poor plasticizer balance, unsuitable polymer system.
Supports film formation; plasticizer balance remains important.
Excessive tackiness, high spray rate, poor drying balance.
Supports controlled film formation when properly formulated.
Pigment settling, poor suspension, weak mixing.
Supports coating suspension stability for more consistent color distribution.
High viscosity, poor dispersion, pigment agglomeration.
Requires optimized viscosity and dispersion through grade selection.
Poor adhesion to tablet core, unsuitable coating system.
Supports film integrity; tablet core compatibility remains critical.
Poor hydration, wrong grade, unstable coating liquid.
Grade selection supports viscosity consistency throughout the coating run.
Understanding these variables helps formulators optimize HPMC grade selection, polymer concentration, and coating process parameters for target coating performance.
Different HPMC viscosity grades provide different coating solution viscosity, sprayability, film strength, and process behavior. Lower viscosity grades are typically preferred for coating applications where sprayability and thin film formation are priorities.
Higher polymer concentration may increase coating solids and film formation efficiency, but it can also increase viscosity and affect sprayability. The right balance between solids content and viscosity is critical for process performance.
Plasticizers influence film flexibility, brittleness, cracking tendency, and overall coating performance. The plasticizer must be compatible with HPMC and selected according to the coating type and regulatory requirements.
Pigments and opacifiers affect suspension stability, color uniformity, opacity, viscosity, and surface appearance. Their particle size, concentration, and dispersion quality all influence final coating results.
Water-based and hydroalcoholic systems can behave differently in terms of dissolution rate, drying speed, viscosity, and coating process conditions. Solvent choice should be aligned with regulatory requirements and equipment capability.
Core hardness, porosity, friability, shape, surface roughness, and moisture sensitivity all affect coating adhesion, film formation, and overall coating quality. The coating system must be compatible with the tablet core.
Spray rate, atomization pressure, nozzle type, inlet temperature, bed temperature, and airflow strongly affect coating uniformity and film quality. Process parameters must be optimized alongside the coating formulation.
Proper HPMC dissolution or hydration is important for stable coating viscosity and smooth spraying. Incomplete hydration can lead to lumps, viscosity variation, or spray inconsistency.
Pan coating and fluid-bed coating processes may require different coating viscosity, solids content, spray behavior, and drying balance. Equipment type and scale should be considered during formulation development.
Choosing the right HPMC requires balancing film formation, solution viscosity, sprayability, drying behavior, tablet appearance, and dosage-form requirements. Review these 10 key questions before grade selection.
What type of tablet coating are you developing (clear, pigmented, protective, color, or functional)?
What coating equipment is used (pan coater or fluid-bed coater)?
What target coating weight gain is required?
What viscosity range is suitable for the spray process?
What polymer concentration and solids content are planned?
Will pigments, opacifiers, plasticizers, or anti-tacking agents be used?
Is the coating water-based or solvent-based?
What tablet core properties must be considered?
What pharmacopoeia or documentation requirements apply?
What disintegration, dissolution, appearance, and stability targets must be achieved?
LANDERCOLL can help review your tablet coating direction and recommend suitable HPMC grade options for evaluation.
Solicite Recomendação de GrauLANDERCOLL pharmaceutical-grade cellulose ether for tablet coating is supplied in packaging suitable for protected transportation, storage, and pharmaceutical production handling, depending on selected grade and customer requirement.
Como o éter de celulose pode absorver umidade, o armazenamento adequado ajuda a manter a fluidez do pó, o comportamento de dissolução, o desempenho da viscosidade e a estabilidade do produto.
25 kg · Selado · BPF
LANDERCOLL can provide product-related documents to support pharmaceutical evaluation, purchasing review, quality assessment, and internal approval processes.
| Document Type | Purpose |
|---|---|
| Technical Data Sheet | Grade specifications, viscosity, and physical properties |
| Safety Data Sheet | Handling, storage, and safety information |
| Certificate of Analysis | Batch-specific quality confirmation |
| Product Specification | Detailed grade parameters |
| Pharmaceutical Grade Statement | Where applicable |
| Pharmacopoeia-Related Information | Where applicable |
| Microbiological / Heavy Metals Data | Where applicable |
| Residual Solvent Information | Where applicable |
| Allergen / GMO / TSE-BSE Statements | Where applicable |
| Informações de Embalagem e Armazenamento | Packaging specs and storage requirements |
| Export Documentation | Where applicable, for import/customs purposes |
If your tablet coating system has poor film formation, unstable viscosity, rough surface, color variation, spray inconsistency, cracking, sticking, peeling, or poor coating uniformity — the HPMC grade and coating formulation may need to be reviewed.
LANDERCOLL can help evaluate suitable HPMC grade directions based on your coating type, viscosity target, solvent system, coating equipment, tablet core properties, and documentation requirements.
HPMC grade selection for tablet coating
Coating viscosity direction and solids content guidance
Film-forming performance support
Pigmented coating formulation discussion
Coating process compatibility review
Pharmaceutical documentation support
Comunicação de amostras e cotações
Discussão sobre fornecimento qualificado de longo prazo
HPMC, also known as hypromellose, is the most widely used cellulose ether in pharmaceutical tablet coating systems. It acts as the primary film-forming polymer, helping create a smooth, uniform coating layer on the tablet surface.
HPMC helps form a smooth and uniform coating film, control coating solution viscosity, support spray consistency, improve tablet appearance, and provide surface protection depending on the formulation design and coating process.
Yes. Suitable pharmaceutical-grade HPMC can be used in pigmented coating systems, where it helps support film formation, coating solution viscosity, and suspension stability of pigments and opacifiers.
Yes. Suitable low viscosity HPMC grades are commonly used in immediate-release film coating systems. Final disintegration and dissolution behavior should be confirmed through formulation testing and product validation.
HPMC coating performance is affected by viscosity grade, polymer concentration, plasticizer type and level, pigment system, solvent system, spray rate, drying conditions, coating equipment type, and tablet core properties. All of these factors should be considered together during formulation development.
The dosage depends on coating formulation design, solids content, target viscosity, coating weight gain, and process requirements. There is no universal standard — final dosage should be confirmed through coating trials and product validation.
HPMC can help improve film formation, viscosity control, and coating uniformity, but coating defects may also be caused by process conditions, plasticizer balance, tablet core quality, drying rate, spray settings, and equipment setup. A systematic approach to formulation and process optimization is recommended.
No. Tablet coating requires suitable pharmaceutical-grade HPMC with appropriate specifications, documentation, and customer qualification. Industrial or construction-grade HPMC is not appropriate for pharmaceutical use.
Lower viscosity grades are typically preferred for tablet coating because they provide better sprayability and thinner film formation. However, the optimal viscosity grade depends on the coating system, solids content, process equipment, and target performance. LANDERCOLL can help recommend suitable grade directions.
Start with coating type, target viscosity, coating process equipment, tablet core properties, solvent system, coating weight gain target, and documentation requirements. LANDERCOLL can help recommend suitable pharmaceutical-grade HPMC directions for evaluation and testing.
Whether you develop clear film coating, pigmented coating, protective coating, immediate-release coating, color coating, ou selected functional tablet coating systems — LANDERCOLL can help you choose suitable pharmaceutical-grade HPMC for better film formation, viscosity control, coating uniformity, and process stability.
Our team supports pharmaceutical manufacturers with grade recommendations, viscosity direction guidance, documentation support, sample supply, and qualified long-term supply discussion.
Pharmaceutical-Grade HPMC for Tablet Coating · Film Coating · Coating Uniformity · Surface Protection · Hypromellose · USP · EP · JP
