Molded Expanded Pellet Snack Product and Method
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Solution Overview
Problem
Current methods for producing snack foods using expandable pellets lack variety and control over properties, limiting the range of snack products that can be created.
Innovation Solution
A process involving the mixing of dry ingredients, extrusion into pellets, and subsequent drying to a specific moisture content, followed by expansion in a microwave-safe mold to achieve a desired shape, with optional use of hydrocolloids and edible binders for uniform expansion and cohesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If expandable pellets are used to create snack products, then individual puffed pieces can be produced, but variety and control over product properties are limited
Solution Approach 1:
The snack product is segmented into multiple individual puffed pellets that are combined within a mold. Each pellet maintains its individual expandable structure while collectively forming a larger molded snack product, enabling variety through different pellet combinations and mold configurations
Solution Approach 2:
Multiple expandable pellets are nested within a mold cavity that defines the target shape. The pellets are contained and guided by the mold structure during expansion, allowing control over the final product shape while maintaining pellet variety
2Shape
If pellets are expanded without a mold, then expansion is free and simple, but the snack product lacks cohesive shape
Solution Approach 1:
A mold acts as an intermediary structure between the expandable pellets and the desired final shape. The mold provides a cavity that guides pellet expansion and defines the target shape, enabling cohesive molded snacks without requiring complex pellet-by-pellet shaping
Solution Approach 2:
The mold cavity provides different constraints at different locations to guide pellet expansion. The mold walls define specific regions where pellets expand to form particular portions of the target shape, enabling precise shape control through localized geometric constraints
3Reliability
If pellets are dried to low moisture content for shelf stability, then storage is improved, but expansion uniformity may be compromised
Solution Approach 1:
The pellets are dried to a specific moisture content range (5-15%) that balances shelf stability with expansion performance. This parameter optimization ensures the pellets remain stable during storage while maintaining sufficient moisture for uniform expansion when heated in the mold
Solution Approach 2:
The pellets are pre-dried and prepared before being placed in the mold. This preliminary drying action ensures shelf stability during handling and storage, while the controlled mold environment subsequently provides the conditions needed for uniform expansion
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
Enables the production of a wider variety of snack products with controlled properties and cohesive shapes, offering enhanced texture and flavor options not previously available.
Implementation Method 1
exposed to microwave energy or radio frequency energy, causing the half-products to expand
Implementation Method 2
exposed to microwave energy or radio frequency energy, causing the half-products to expand
Implementation Method 3
an edible binder material is added to the mold with the pellets prior to expansion, which helps the molded snack product retain its target shape
Data Source
AI summary
A method for making a snack product having a target shape from expandable pellets is disclosed. The snack product is formed into a target shape by expanding the pellets inside a mold. As the pellets expand inside the mold, the mold walls restrain the pellets expansion in the direction normal to the mold wall surface. The pellets also adhere to one another as they expand. An edible binder material can be included to facilitate such adherence.