Non-Combustible Wrapper for Heat But Not Burn Sticks
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Solution Overview
Problem
Conventional wrappers for heat but not burn sticks are combustible, interfere with aerosol production, and are not environmentally friendly, posing regulatory and cost challenges.
Innovation Solution
Development of a non-combustible wrapper made from biodegradable materials with flame retardant fillers and a reduced ignition composition, either as a single layer or multi-layer design, to ensure the wrapper does not hinder aerosol production and meets regulatory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aluminum is laminated to a paper substrate to make the wrapper non-combustible, then the non-combustibility is improved, but the aerosol production is interfered with and the cost increases
Solution Approach 1:
The patent removes the aluminum layer from the wrapper structure entirely, extracting only the necessary non-combustible function and replacing it with alternative materials (paper with flame retardant coating or intrinsic fire resistance) that do not interfere with aerosol production
Solution Approach 2:
The patent introduces a flame retardant coating as an intermediary layer on paper substrates, or uses inherently fire-resistant paper materials, to achieve non-combustibility without using aluminum, thereby mediating between the need for fire resistance and aerosol production compatibility
2Reliability
If aluminum is laminated to a paper substrate to make the wrapper non-combustible, then the non-combustibility is improved, but the production cost increases significantly
Solution Approach 1:
The patent employs inexpensive paper-based materials with flame retardant properties instead of expensive aluminum laminates, using cost-effective solutions that maintain the required safety function without the high material and processing costs of metal laminations
Solution Approach 2:
The patent changes the material parameters by selecting paper substrates with specific fire-resistant properties or applying flame retardant coatings, thereby achieving non-combustibility through material composition changes rather than expensive structural modifications
3Object-generated harmful factors
If conventional paper is used for the wrapper, then the aerosol production is maintained, but the wrapper becomes combustible
Solution Approach 1:
The patent creates composite paper structures by combining paper substrates with flame retardant coatings or layers, forming multi-layer composite materials that simultaneously provide good aerosol production characteristics and fire resistance
Solution Approach 2:
The patent modifies the fire resistance parameter of paper materials by applying flame retardant coatings or selecting inherently fire-resistant paper types, thereby changing the combustion properties without affecting the aerosol-generating capabilities of the paper structure
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 wrapper effectively renders heat but not burn sticks non-combustible, maintains aerosol quality, and is environmentally friendly, meeting regulatory standards while reducing production costs.
Implementation Method 1
wrappers can be made according to the present disclosure that contain one or more flame retardant fillers
Implementation Method 2
a reduced ignition composition can be applied to one or both sides of the wrapper
Implementation Method 3
These types of smokeless products are typically referred to as heat but not burn sticks. Heat but not burn sticks are placed in an aerosol generating machine and subjected to low temperature heating that produces an inhalable aerosol without combusting the product
Data Source
AI summary
A paper well suited for use as a wrapper in heat but not burn sticks is disclosed. The paper includes a base web made from cellulosic fibers combined with a flame retardant filler and/or can include a coating formed from a reduced ignition composition.