PEF Bottle Imprinting Precision via Material Parameter Change
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Solution Overview
Problem
Current plastic bottles made of PET have limitations in imprinting small and precise features, such as text in small characters, due to its flow and regularity characteristics, which restricts the complexity and detail of designs that can be molded.
Innovation Solution
The use of a thermoplastic polymer made from FDCA and diol monomers, specifically PolyEthylene Furanoate (PEF), which allows for improved imprinting capabilities by following the profile of mold members more accurately, enabling the creation of smaller and more precise features, such as intricate patterns and Braille characters, through a blow molding process at lower pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If PET polymer is used for bottle manufacturing, then the bottle can be produced with standard flow characteristics, but the imprinting precision and ability to follow mold profiles is limited
Solution Approach 1:
The patent applies parameter changes by modifying the polymer material from PET to PEF, which fundamentally alters the flow and regularity parameters of the material. This change enables the polymer to better follow mold profiles and achieve higher imprinting precision while maintaining ease of manufacture through standard blow molding processes.
2Manufacturing precision
If PET polymer is used, then the manufacturing process is simple and well-established, but small and precise features such as text in small characters cannot be imprinted
Solution Approach 1:
The patent changes the polymer material parameter from PET to PEF, which has different rheological properties that enable precise feature imprinting. This material parameter change allows small and precise features to be successfully molded without increasing device complexity, as the blow molding process itself remains unchanged.
3Productivity
If higher blowing pressure is used in blow molding, then the bottle can be formed faster, but the imprinting precision deteriorates due to PET's flow characteristics
Solution Approach 1:
The patent changes the material parameter from PET to PEF, which has improved regularity features that allow precise imprinting even at higher blowing pressures. This enables both high productivity through faster blow molding and high manufacturing precision through accurate feature reproduction, resolving the contradiction between speed and precision.
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
PEF polymer enables the production of bottles with enhanced imprinting capabilities, allowing for more complex and precise designs, such as small text and intricate patterns, while reducing the necessary blowing pressure in the blow molding process, resulting in improved moldability and design flexibility compared to PET bottles.
Implementation Method 1
the thermoplastic polymer of the invention showed an enhanced ability to follow a profile of an imprinting member of a mold thereby making it possible to get some smaller and more precise features imprinted onto the bottle. Without intending to be bound to any theory, it is believed that due to its flow and regularity features, PET limits the kind of imprints that can be molded
Implementation Method 2
blowing the preform in the mold to form the bottle comprising an envelop defining a housing and provided with at least one imprint at a blowing pressure less than 35 bars
Data Source
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Figure 6~7c
AI summary
A bottle (1) comprising an envelop (2) defining a housing, said bottle being molded from at least one thermoplastic polymer of at least one FuranDiCarboxylic Acid (FDCA) monomer, preferably 2,5-FuranDiCarboxylic Acid (2,5-FDCA) monomer, and at least one diol monomer, preferably monoethylene glycol (MEG) monomer, wherein the envelop is provided with at least one imprint (10a, 10b).