Soft-Chew Tablet Formulation for Consistent Rotary Press Production
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Solution Overview
Problem
Existing methods for manufacturing soft-chewable tablets are cumbersome, complex, and not suitable for large-scale production using conventional pharmaceutical equipment, leading to issues with weight and physical form control, and require excessive conditioning for desired shape and structure.
Innovation Solution
A simplified process using conventional pharmaceutical equipment, such as a rotary tablet press, to formulate soft-chewable tablets with low hardness and high moisture content, incorporating palatability agents and texturing agents, ensuring uniform composition and stable shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional tablet compression methods are used to produce hard tablets (>10 kp), then tablet strength is improved, but chewability and patient acceptance deteriorate
Solution Approach 1:
The invention changes the physical-chemical parameters of the tablet formulation by incorporating specific binders (hydroxypropyl cellulose, polyvinylpyrrolidone), plasticizers (glycerol, propylene glycol), and humectants to achieve a hardness range of 0.5-5 kp, transforming the tablet from hard and difficult to chew into soft and easily chewable while maintaining structural integrity
Solution Approach 2:
The invention uses composite material formulation combining multiple excipients with specific functional properties: binders for structural integrity, plasticizers for flexibility, humectants for moisture retention, and disintegrants for controlled breakdown. This composite approach creates tablets with optimized balance between hardness and chewability
2Ease of operation
If tablet hardness is reduced to improve chewability, then patient acceptance is improved, but friability increases making tablets brittle
Solution Approach 1:
The invention adjusts formulation parameters including binder concentration (5-20%), plasticizer content (2-10%), and humectant levels to achieve optimal moisture content (5-20%). These parameter changes create a matrix that maintains low hardness for chewability while ensuring friability remains below 1% through proper binding and plasticization
Solution Approach 2:
The invention introduces plasticizers and humectants as intermediary substances that mediate between the conflicting requirements of softness and structural integrity. These intermediaries plasticize the tablet matrix, allowing it to be soft enough for chewing while maintaining coherence and resisting fragmentation during handling
3Ease of operation
If extruders and molding machines are used to manufacture soft-chew tablets, then soft texture can be achieved, but manufacturing complexity and equipment requirements increase
Solution Approach 1:
The invention makes the conventional rotary tablet press multi-functional by optimizing the formulation to work within traditional compression parameters. The same equipment used for hard tablets can now produce soft-chew tablets by adjusting compression force and using the specialized formulation, eliminating the need for separate extrusion or molding equipment
Solution Approach 2:
The invention adapts the proven manufacturing process of conventional tablet compression, copying the established methodology and equipment usage while modifying the formulation to achieve soft-chew characteristics. This allows pharmaceutical facilities to produce soft-chew tablets using existing infrastructure and operational knowledge
4Shape
If excessive conditioning (drying or curing) is applied after tablet formation, then shape stability is improved, but manufacturing time and process complexity increase
Solution Approach 1:
The invention incorporates all necessary conditioning agents (binders, plasticizers, humectants) into the formulation before compression. The tablets are pre-conditioned during granulation and mixing stages, achieving the desired moisture content (5-20%) and structural properties before formation, thereby eliminating the need for post-formation drying or curing steps
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The process enables efficient, reliable, and consistent production of soft-chew tablets with low hardness and low friability, providing a pleasant texture and palatable taste, suitable for involuntary subject populations.
Implementation Method 1
The granulated compacted soft-chew mass is lubricated with a lubricating agent and compressed in a tablet press to form soft-chew tablets
Data Source
AI summary
A product and process of manufacturing an edible soft-chewable dosage form for the delivery of pharmaceutically active ingredients or nutritional agents orally to an animal or human subject, by forming a granulated soft-chew mass by appropriate mixing and sifting steps, and forming tablets with a compression press. Such soft-chew dosage forms have hardness of less than about two kilopond (2 kp) and friability of less than about one percent (1%) at three-hundred (300) rotations when measured according to the United States Pharmacopeia (USP) test. The process for manufacturing such compressed soft-chew tablets employs compression (tablet) pressing equipment to produce soft-chew tablets of consistent weight and texture.