Two-Compartment Pouch Manufacturing with Intermediate Seal
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Solution Overview
Problem
Existing manufacturing processes for flexible pouches, such as stick packs, are limited in producing two-compartment pouches with separate compartments that can be easily filled and sealed, and do not allow for efficient formation and separation of distinct compartments with optional frangible or permanent intermediate seals.
Innovation Solution
A machine and method for forming a two-compartment pouch using a lower and upper compartment fill tube, a thin film drawer, side seal bar, and a puller assembly with lower and upper seal bars, allowing for the formation of a sleeve, bottom seal, intermediate seal, and top seal to create separate compartments that can be filled and sealed efficiently, with the option for frangible or permanent intermediate seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-compartment pouch manufacturing process is used, then the manufacturing process is simple, but the product cannot provide separate compartments for mixing or separate opening
Solution Approach 1:
The pouch is divided into two separate compartments by introducing an intermediate seal that partitions the interior space. This segmentation allows the pouch to provide separate storage spaces while maintaining a relatively simple manufacturing process that builds upon existing single-compartment technology
Solution Approach 2:
The intermediate seal is formed during the manufacturing process before the pouch is fully assembled and distributed. By pre-establishing the compartment division during production, the pouch gains versatile functionality without requiring complex post-manufacturing assembly steps
2Productivity
If a traditional stick pack process is used, then the manufacturing process is efficient for single-compartment pouches, but it cannot efficiently form and separate distinct compartments with intermediate seals
Solution Approach 1:
The manufacturing process is segmented into distinct phases: forming the sleeve, creating the intermediate seal to divide compartments, and then sealing both compartments. This segmentation of the manufacturing process enables efficient production of two-compartment pouches by adapting existing stick pack technology
Solution Approach 2:
The intermediate seal is formed during the manufacturing process before the pouches are separated. By preliminarily establishing the compartment structure during production, the system achieves both high productivity and ease of manufacture without requiring complex post-processing steps
3Ease of operation
If frangible intermediate seals are used, then the compartments can be easily mixed by breaking the seal, but the seal structure becomes more complex
Solution Approach 1:
The intermediate seal is designed with specific physical properties that allow it to be frangible - it can be broken easily by the user. By changing the physical parameters of the seal material and structure to be inherently breakable, the system enables easy compartment mixing without requiring complex opening mechanisms
Solution Approach 2:
The frangible seal is designed to break automatically when the user applies normal opening force to the pouch. The seal structure itself provides the mixing function without requiring additional mechanisms - the act of opening the pouch naturally breaks the intermediate seal and mixes the compartments
Data Source
AI summary
A machine and a method for forming a two-compartment pouch having a lower compartment and an upper compartment The method includes the steps of drawing a film over a pair of fill tubes; sealing side edges of the film to form a sleeve; forming a bottom seal on the sleeve; pulling the sleeve downwardly; filling a bottom portion of the pouch using one of the fill tubes; forming a second seal over the filled bottom portion; filling an upper portion of the pouch using the other fill tube; and sealing the upper portion.