Transparent Wrapper Shrinkage Control for Smoking Articles
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Solution Overview
Problem
The combination of traditional paper tipping wrappers and transparent polymeric plug wraps in smoking articles leads to undesirable wrinkling of the paper wrapper during manufacturing, which is aesthetically and functionally undesirable.
Innovation Solution
A method of manufacturing smoking articles using a substantially transparent wrapper formed from a polymeric film with a low shrinkage rate, paired with a sheet of paper material that minimizes the relative shrinkage between the wrapper and the paper, preventing wrinkling by ensuring the shrinkage ratio is less than 3.5 when exposed to specific humidity and temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transparent polymeric plug wrap is used with traditional paper tipping wrapper, then transparency is achieved, but wrinkling of the paper wrapper occurs
Solution Approach 1:
The patent changes the physical parameters of the transparent wrapper by specifying shrinkage rate limits (less than 3.5% at 42°C and 15% relative humidity) to match the paper wrapper's dimensional stability, thereby preventing wrinkling while maintaining transparency
Solution Approach 2:
The patent creates a composite structure where a transparent polymeric film with controlled shrinkage properties is combined with traditional paper tipping wrapper, achieving both transparency and dimensional stability through the synergistic combination of materials
2Ease of operation
If traditional paper tipping wrapper is used, then surface feel is satisfactory, but transparency is lost
Solution Approach 1:
The patent combines traditional paper tipping wrapper (providing satisfactory surface feel) with a transparent polymeric film layer (providing transparency), creating a composite structure that delivers both desired tactile properties and visual clarity
3Ease of manufacture
If shrinkage ratio between transparent wrapper and paper material is high, then manufacturing is easier, but product quality deteriorates due to wrinkling
Solution Approach 1:
The patent establishes specific shrinkage rate parameters for the transparent polymeric film (less than 3.5% under standardized conditions) to ensure compatibility with paper wrapper shrinkage characteristics, thereby preventing wrinkling while maintaining manufacturing feasibility
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
This approach allows for the use of transparent wrappers with conventional paper materials without wrinkling, ensuring the smoking articles remain aesthetically pleasing and functional even when subjected to varying environmental conditions.
Implementation Method 1
The ratio of shrinkage of the substantially transparent wrapper to shrinkage of the paper material at the time of manufacture of the smoking article is less than about 3.5 when subjected to 15 percent relative humidity at 42 degrees Celsius for 3 hours
Data Source
Figure 1~2
Figure 3
AI summary
A method of manufacturing a smoking article (10) comprises providing a mouthpiece (14) and an aerosol generating substrate (12) in axial alignment with the mouthpiece (14). The mouthpiece (14) includes one or more segments (16) and a substantially transparent wrapper (18) circumscribing at least a portion of the one or more segments (16). A sheet of paper material is provided and comprises a window in the paper material. The ratio of shrinkage of the substantially transparent wrapper (18) to shrinkage of the paper material at the time of manufacture of the smoking article is less than 3.5 when subjected to 15 percent relative humidity at 42 degrees Celsius for 3 hours. The sheet of paper material is wrapped around at least a portion of the transparent wrapper (18) so that an underlying mouthpiece segment can be viewed through the window and the substantially transparent wrapper (18).