Composite Membrane for Flexible Baking Moulds
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Solution Overview
Problem
Existing flexible moulds for baking and freezing food products face limitations in temperature resistance and durability, particularly with glass fibre frameworks that break under mechanical stress and are not suitable for high-temperature baking or deep-freezing.
Innovation Solution
A composite membrane with a silicone rubber matrix reinforced by a mixture of inorganic and organic threads/fibres, such as glass, carbon, and aramid fibres, providing enhanced wear resistance and temperature stability from -60°C to 300°C, while maintaining flexibility and anti-adhesive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If glass fibre frameworks are used in flexible moulds, then flexibility and anti-adhesive properties are maintained, but temperature resistance and durability deteriorate under high-temperature baking or deep-freezing conditions
Solution Approach 1:
The patent applies composite materials by combining silicone rubber matrix with a hybrid fibre reinforcement system consisting of both organic fibres (polyester, polyamide) and inorganic fibres (glass, carbon). This composite structure resolves the contradiction by leveraging the thermal stability of inorganic fibres for temperature resistance while the organic fibres provide flexibility and toughness to prevent breaking under mechanical stress during bending and handling operations.
2Duration of action of moving object
If glass fibre frameworks are used in flexible moulds, then anti-adhesive properties are maintained, but wear resistance and longevity deteriorate
Solution Approach 1:
The hybrid fibre composite structure enhances wear resistance and longevity through the synergistic combination of fibre types. The inorganic fibres (glass, carbon) provide high strength and wear resistance, while the organic fibres (polyester, polyamide) contribute to flexibility and impact resistance. This combination creates a reinforcement framework that is more durable and resistant to wear than glass fibres alone, extending the service life of the flexible mould.
Solution Approach 2:
The patent applies local quality by distributing different fibre types throughout the reinforcement framework to address different functional requirements. The inorganic fibres are positioned to provide structural strength and wear resistance in high-stress areas, while organic fibres are distributed to maintain flexibility and prevent catastrophic failure. This localized functional distribution optimizes both wear resistance and longevity.
3Strength
If wall thickness is increased to improve durability, then strength and temperature resistance improve, but flexibility deteriorates
Solution Approach 1:
The hybrid fibre composite reinforcement allows the mould to maintain high strength and durability without increasing wall thickness. The combination of inorganic and organic fibres creates a lightweight but strong reinforcement framework that provides the necessary mechanical strength and temperature resistance while keeping the overall structure thin and flexible. This resolves the contradiction by achieving enhanced durability through material composition rather than increased dimensions.
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 composite membrane offers increased longevity, improved durability, and higher temperature resistance without increasing wall thickness, making it suitable for various baking and freezing applications with reduced production costs and scrap rates.
Implementation Method 1
A composite membrane with a silicone rubber matrix reinforced by a mixture of inorganic and organic threads/fibres, such as glass, carbon, and aramid fibres, providing enhanced wear resistance and temperature stability from -60°C to 300°C
Implementation Method 2
maintaining flexibility and anti-adhesive properties
Data Source
AI summary
A flexible, self-supporting, anti-adhesive, and cellular membrane defining a mold or a cavity plate for preparing food products, particularly bakery, viennoiserie, pastry, and biscuit products, and in particular for molding, fermenting, and baking bread dough, and which includes a composite structure including a silicone rubber mold (10) consisting of at least one elastomer or at least one silicon resin, and reinforced by a textile-structure framework (11) made of a mixture of inorganic and organic threads (12, 13) and/or fibers. The membrane is characterized in that the inorganic and organic threads (12, 13) and/or fibers represent more than 50 wt % of the textile structure of the framework (11).