PTP Blister Packaging Material Easy Cutting Smooth Surface
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Solution Overview
Problem
Existing PET-based press through package (PTP) blister packaging materials are difficult to cut and often result in sharp, hazardous cut surfaces, particularly when used for food products like gum or chocolate, leading to frequent injuries, especially among children.
Innovation Solution
A PTP blister packaging material composed of a blend of PET-based copolymers with specific intrinsic viscosity ranges and a master batch, including dispersants and disintegrants, which allows for easy cutting without excessive force and prevents sharp cut surfaces, enhancing safety and marketability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If PET-based copolymer is used for PTP blister packaging material, then harmful components are eliminated, but the material becomes difficult to cut and creates sharp cut surfaces
Solution Approach 1:
The patent modifies the intrinsic viscosity parameter of the PET-based copolymer from conventional values to a specific range of 0.65-0.85 dl/g. This parameter change fundamentally alters the material's cutting behavior, enabling it to be easily cut with ordinary scissors while producing smooth cut surfaces without sharp edges, thus resolving the contradiction between eliminating harmful components and maintaining ease of cutting
Solution Approach 2:
The patent creates a composite material system by blending PET-based copolymer with specific additives including master batch containing disperse dye, antistatic agent, and UV absorber. This composite formulation enhances the base polymer's cutting properties while maintaining its safety advantages, allowing the material to be both safe and easy to cut
2Ease of operation
If PET-based copolymer with optimal intrinsic viscosity is used, then cutting performance is improved, but manufacturing complexity increases
Solution Approach 1:
By establishing a specific intrinsic viscosity range (0.65-0.85 dl/g) as the key controlling parameter, the patent simplifies the manufacturing process. Instead of requiring complex multi-parameter optimization, manufacturers can focus on controlling this single critical parameter during polymer synthesis, thereby improving cutting performance without significantly increasing manufacturing complexity
Solution Approach 2:
The patent replicates the successful cutting properties of PVC material through PET-based copolymer by matching key physical parameters (intrinsic viscosity). This allows the material to copy PVC's ease of cutting while maintaining PET's safety advantages, avoiding the need for complex manufacturing processes
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 enables the PTP blister packaging material to be easily cut like PVC, with a smooth cut surface, achieving high tensile strength, impact resistance, and thermal conductivity, while ensuring user safety and environmental recyclability.
Implementation Method 1
A PTP blister packaging material including a PET-based copolymer having an intrinsic viscosity of 0.70 to 0.78 dl/gr, a PET-based copolymer having an intrinsic viscosity of 0.80 to 0.85 dl/gr, and a master batch
Data Source
AI summary
The present invention relates to a novel PTP blister packaging material, a PTP blister package comprising the same, and a method of manufacturing the same, and more particularly, to a PET-based blister package which is easy to cut and can be formed with a smooth cut surface, a blister package manufactured using the same as well as a method of manufacturing the same.