Extraction process
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Solution Overview
Problem
Existing beverage extraction processes, such as those used in coffee brewing, face challenges in maintaining a fluid-tight seal under high pressure without using environmentally critical or food-safety hazardous materials like polyvinylchloride, while ensuring efficient extraction of soluble components.
Innovation Solution
A container with a heat-sealed seam using a coating composition comprising a mixture of polyester resins with varying glass transition temperatures, which provides a stable and durable seal that withstands high pressures, is food-safe, and avoids the use of polyvinylchloride.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high pressure is applied to enhance extraction efficiency, then the transport of flavors into the liquid is improved, but the seal between the body and lidding foil may leak or rupture
Solution Approach 1:
The patent changes the chemical and physical parameters of the sealing material by using a polyester resin composition with specific glass transition temperatures (combining high-Tg polyester for heat resistance with low-Tg polyester for flexibility). This parameter change allows the seal to maintain integrity under high extraction pressures while still providing effective sealing.
Solution Approach 2:
The patent employs a composite sealing material consisting of multiple polyester resins with different properties. The composition includes at least one high-Tg polyester resin (providing thermal stability) and at least one low-Tg polyester resin (providing flexibility and adhesion), creating a composite material that balances seal integrity with pressure resistance.
2Reliability
If conventional heat-seal lacquers are used to provide stable closing, then the seal strength is improved, but the use of polyvinylchloride and critical components causes environmental and food-safety problems
Solution Approach 1:
The patent extracts and removes the harmful polyvinylchloride component from the heat-seal lacquer composition entirely, replacing it with polyester resins that provide equivalent or superior sealing performance without the environmental and food-safety hazards associated with PVC.
Solution Approach 2:
The patent changes the chemical composition parameters of the sealing material from conventional PVC-based lacquers to polyester resin-based compositions with specific glass transition temperature ranges, achieving seal stability through different chemical mechanisms that are environmentally benign and food-safe.
3Productivity
If the extraction process is carried out at high pressure, then the beverage quality is improved, but the container must withstand high pressure without leakage or rupture
Solution Approach 1:
The patent modifies the thermal and mechanical parameters of the sealing material by selecting polyester resins with specific glass transition temperatures. The combination of high-Tg (for dimensional stability under pressure) and low-Tg (for flexibility and stress distribution) polyester resins enables the container seal to withstand high extraction pressures while maintaining integrity.
Solution Approach 2:
The patent uses a composite polyester resin system where high-Tg polyester provides structural strength and pressure resistance, while low-Tg polyester provides flexibility and adhesion to the container walls. This composite material approach allows the container to withstand high pressures required for quality beverage extraction without leakage or rupture.
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 solution ensures a robust, leak-proof seal that maintains the integrity of the extraction process under high pressure, preserves flavor, and is environmentally friendly, while being cost-effective and easy to manufacture.
Implementation Method 1
the lidding foil and the body defining a receiving space are connected to one another with a heat-sealed seam
Implementation Method 2
the heat-sealed seam contains a heat-seal lacquer provided by a coating composition comprising 55-100 wt. % of a mixture of polyester resins, wherein at least 20 wt. % of the mixture of the polyester resins is a polyester resin A1 having a Tg higher than 50° C. and at least 40 wt. % of the mixture of the polyester resins is a polyester resin A2 having a Tg below 25° C.
Implementation Method 3
Solid-liquid extraction allows soluble components to be removed from solids using a solvent. In the extraction process, at least a portion of at least one transition component is separated from a carrier by a solvent
Implementation Method 4
the heat-sealed seam contains a heat-seal lacquer provided by a coating composition comprising 55-100 wt. % of a mixture of polyester resins
Data Source
AI summary
The invention relates to an extraction process carried out in a container C in which at least a portion of at least one transition component is separated from a carrier by a solvent. the container C comprises a lidding foil and a body defining a receiving space which contains the carrier, the lidding foil and the body are connected to one another with a heat-sealed seam, where the heat-scaled seam contains a heat-seal lacquer provided by a coating composition comprising 55-100 wt. % of a mixture of polyester resins. wherein the wt. % is relative to the total weight of the composition and wherein at least 20 wt. % of the mixture of the polyester resins is a polyester resin A1 having a Tg higher than 50 C and at least 40 wt. % of the mixture of polyester resins is a polyester resin A2 having a Tg below 25 C.