



LANDERCOLL pharmaceutical-grade cellulose ether supports tablet coating systems with reliable film-forming performance, stable viscosity, smooth coating application, uniform surface coverage, and consistent coating quality.
From clear film coating and pigmented coating to protective coating, color coating, and immediate-release coating systems — selecting the right HPMC viscosity grade and coating formulation is foundational to achieving uniform tablet appearance and process stability.
— HPMC · Hypromellose · Film Coating · Tablet Coating · Coating Uniformity · USP · EP · JP
Filmüberzug
Pigmented Coating
Coating Uniformity
Surface Protection
Tablet coating applications require suitable pharmaceutical-grade cellulose ether products and appropriate documentation. Not every cellulose ether grade is suitable for pharmaceutical use.
Before evaluation or commercial application, customers should confirm product specifications, Technical Data Sheet, Safety Data Sheet, Certificate of Analysis, pharmacopoeia-related information, and any required regulatory or quality documents according to their dosage form, target market, and internal qualification process.
HPMC (hypromellose) is the primary film-forming polymer in pharmaceutical tablet coating systems. It dissolves or disperses in coating liquids, sprays consistently, and dries into a uniform film that improves tablet appearance, provides surface protection, and supports coating process stability. Final coating performance depends on HPMC viscosity grade, polymer concentration, plasticizer type, pigment system, spray parameters, and the complete coating formulation.
Film · Uniformity · Surface Protection
Tablet coating is an important process in solid dosage manufacturing. It can improve tablet appearance, mask unpleasant taste or odor, support tablet handling, protect the tablet surface, improve swallowability, and provide functional coating performance depending on formulation design.
LANDERCOLL provides suitable pharmaceutical-grade HPMC (Hydroxypropylmethylcellulose), also known as hypromellose, for pharmaceutical tablet coating systems. HPMC is widely used as a film-forming polymer because it can form a uniform coating film when properly dissolved, sprayed, dried, and formulated with suitable plasticizers, pigments, and other coating ingredients.
A suitable HPMC grade helps coating formulations achieve stable viscosity, good sprayability, smooth film formation, uniform coverage, and consistent tablet appearance. It is especially useful in immediate-release film coating, protective coating, color coating, moisture-sensitive tablet coating systems, and selected functional coating concepts.
Looking for pharmaceutical-grade HPMC for your tablet coating system?
Ask for a Product RecommendationTablet coating requires a polymer that can dissolve or disperse properly, form a stable coating solution, spray consistently, dry into a uniform film, and maintain suitable film strength and appearance. Without a suitable film-forming polymer, coatings may show poor coverage, uneven appearance, cracking, peeling, roughness, picking, sticking, or inconsistent performance across batches.
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Hypromellose for film-forming tablet coating systems
HPMC is the primary LANDERCOLL cellulose ether product for tablet coating applications. Suitable pharmaceutical-grade HPMC can be used as a film-forming polymer in coating formulations where stable viscosity, good film formation, smooth spraying, and uniform surface coverage are required. Depending on the formulation and process, HPMC may be used in clear coatings, pigmented coatings, protective coatings, color coatings, and selected functional coating systems.
Selected cellulose derivative for viscosity, suspension, and stabilization support
CMC is not usually the main film-forming polymer for standard tablet film coating, but suitable pharmaceutical-grade CMC may be used in selected systems where viscosity control, suspension stability, or stabilizing performance is required. Its use should be evaluated according to dosage form, formulation system, coating process, and required documentation.
Different tablet coating systems require different HPMC viscosity directions and formulation design strategies.
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
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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.
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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.
Nach Qualitätsempfehlung fragenLANDERCOLL 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.
Because cellulose ether can absorb moisture, proper storage helps maintain powder flowability, dissolution behavior, viscosity performance, and product stability.
25 kg · Sealed · GMP
LANDERCOLL can provide product-related documents to support pharmaceutical evaluation, purchasing review, quality assessment, and internal approval processes.
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| Technical Data Sheet | Grade specifications, viscosity, and physical properties |
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| 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 |
| Packaging & Storage Information | 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
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Sample and quotation communication
Long-term qualified supply discussion
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.
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