Multilayer PE/PET/PP Bottle for Liquor Preservation
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Solution Overview
Problem
Existing packaging solutions for alcoholic beverages fail to effectively preserve the quality and integrity of the liquor, particularly in terms of flavor, light exposure, thermal stability, and UV protection, while also lacking in ease of opening and structural stability.
Innovation Solution
A three-layered bottle composed of polyethylene (PE) as the inner layer for chemical resistance, polyethylene terephthalate (PET) as a light barrier and for stability, and polypropylene (PP) as the outer layer for thermal resistance and UV protection, with a pre-cut for easy opening and an indentation for standing, providing a comprehensive solution for preservation and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer packaging is used, then the device complexity is reduced, but the preservation quality (flavor, light protection, thermal stability) deteriorates
Solution Approach 1:
The patent applies composite materials by combining three different polymer layers (PE, PET, PP) with distinct protective functions. Each layer contributes specific properties: PE for chemical resistance and flavor preservation, PET for light barrier and structural stability, and PP for thermal resistance and UV protection. This composite structure resolves the contradiction by achieving superior preservation quality through material composition rather than mechanical complexity.
Solution Approach 2:
The patent implements nesting by placing multiple protective layers concentrically around the alcoholic beverage, with each layer nested within or around the other. The PE layer contacts the beverage directly, the PET layer surrounds it for light protection, and the PP layer forms the outermost protective shell. This nested arrangement maximizes preservation efficacy while maintaining a simple single-bottle structure.
2Ease of manufacture
If conventional packaging materials are used, then manufacturing simplicity is maintained, but the shelf life and product integrity deteriorate
Solution Approach 1:
The patent uses composite materials consisting of three extruded polymer layers (PE 250 microns, PET 50 microns, PP 30 microns) that can be manufactured through continuous extrusion and lamination processes. This approach maintains manufacturing simplicity by using standard plastic processing techniques while achieving extended shelf life of 27 months through the synergistic protective properties of each layer.
Solution Approach 2:
The patent applies parameter changes by optimizing the thickness of each layer (total 330 microns) to balance protective performance with manufacturing feasibility. The specific thickness parameters were selected to provide adequate protection against light, heat, and chemical interaction while remaining compatible with existing extrusion and forming equipment, thus extending shelf life without complicating manufacturing.
3Strength
If the bottle top is not pre-cut, then structural integrity is maintained, but ease of opening deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-cutting the bottle top during the manufacturing process to create a perforated opening pattern. This preliminary preparation allows the consumer to easily open the bottle by simply pulling apart the pre-scored sections, eliminating the need for additional cutting tools or complex opening mechanisms while maintaining adequate structural integrity through the engineered cut pattern.
4Ease of manufacture
If the bottle base is flat, then manufacturing simplicity is maintained, but structural stability deteriorates
Solution Approach 1:
The patent applies asymmetry by designing the bottle base with a specific non-uniform geometry featuring a central depression or dimple. This asymmetric base design provides enhanced standing stability by creating a lower center of gravity and wider effective base footprint, while still being manufacturable through standard injection molding or extrusion processes with simple mold modifications.
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 three-layered bottle maintains the quality and integrity of the alcoholic beverage by preventing flavor change, light exposure, and thermal degradation, while ensuring ease of opening and structural stability, as demonstrated by accelerated and natural stability studies and migration tests, extending the shelf life to 27 months with 95% reliability.
Implementation Method 1
The first layer, PE (1) of polyethylene known as Polyethylene blown film is characterized by preventing the detachment of particles and contamination of the alcoholic beverage
Implementation Method 2
The second layer, PET (2) of polyethylene terephthalate known as Polyethylene terephthalate acts as a barrier against light, prevents it from evaporating and losing the alcohol in the alcoholic beverage
Implementation Method 3
The third and last layer, PP (3) Polypropylene known as cast polypropylene film, has a thermal resistance at high temperatures and being the outermost layer provides extra protection against thermal changes
Implementation Method 4
This last layer also has an attachment type 25038-59-9 that protects alcohol or drink from ultraviolet rays, making the material resistant to light
Data Source
AI summary
In the alcohol market or in the liquor industries, it is common to find that the packaging activity is carried out in glass bottles and on some occasions in PET (POLYETHYLENE TEREPHALATE) and PP (POLYPROPYLENE) type containers. In the case of these latter packages, there are problems of conservation of quality, aroma and flavor, since they give off particles because they are not completely resistant to alcohol. Now, glass bottles are the most used since thanks to their 10 barrier property they preserve the flavor and quality of these kinds of drinks for longer, maintaining the level of alcohol, aroma and flavor from bottling but having serious transport and packaging problems.The present invention provides a bottle of a new multilayer material in 15 that is packaged in a smaller dose than conventional ones, also called single-dose liquor or spirits, in which the preservation of the liquor is guaranteed for a prolonged period thanks to the incorporation of a technical solution that does not allow the release of particles in the drink for up to 27 months. Likewise, the new bottle has an easy open system that allows guaranteeing the non-reuse of the packaging to pack adulterated liquor, which is a frequent problem in the liquor industry.