Guide Member With Expansion Element For Web Alignment

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Solution Overview

Problem

In the manufacturing of inflatable cushions for packaging, existing systems face challenges with poorly aligned films, excessive freedom, and high-speed vibration due to inadequate tension and static issues, leading to inefficiencies and undesirable effects like noise during the inflation and sealing process.

Innovation Solution

A web inflation and sealing apparatus is introduced, featuring a guide member with an adjustable elevated profile portion and an expandable element to guide the web material along a curved path, ensuring proper alignment and tension, which includes a support member and an inflation and sealing assembly to inflate and seal the web material effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the web material is fed at high speed, then productivity is improved, but vibration and noise increase due to inadequate tension

Engineering Contradiction:
Improvefeeding speedVSAvoidvibration and noise
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The guide member includes an adjustable elevated profile portion that can be positioned at different locations along the guide member's length. This dynamic adjustment capability allows the system to optimize tension at high feeding speeds while maintaining stability, thereby reducing vibration and noise without sacrificing productivity

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the films are poorly aligned or have too much freedom, then ease of operation is improved, but manufacturing precision deteriorates

Engineering Contradiction:
Improvefilm handling freedomVSAvoidfilm alignment
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The guide member acts as an intermediary element between the bulk supply material and the inflation nozzle. It provides a curved path that naturally guides and aligns the web material, ensuring precise positioning at the nozzle while maintaining ease of operation during feeding

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of manufacture

If static issues are present in the bulk supply material, then ease of manufacture is improved, but manufacturing precision deteriorates

Engineering Contradiction:
Improvebulk material handlingVSAvoidweb material alignment
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The guide member defines a curved path for the web material, using a conical or rounded profile. This curvature helps eliminate static issues by smoothly guiding the material from the bulk supply, ensuring consistent alignment and tension throughout the feeding process while maintaining ease of manufacture

Inventive Principle:
Principle #14Spheroidality (Curvature)

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 apparatus improves the alignment and tension of web materials during inflation and sealing, reducing noise and vibration, and enhancing the efficiency of the packaging material production process.

Implementation Method 1

an adjustably expandable element comprises an inflatable member provided at least partially circumferentially about a radial surface of the guide member

Methodology Applied
Scientific EffectInflation:

Implementation Method 2

The guide member may include a plurality of elevated profile portions. In accordance with various embodiments, the adjustably expandable element comprises an elastomeric sleeve coupled to a movable portion of the guide member and configured to be collapsible and extendable responsive to movement of the movable portion of the guide member along a length of the guide member

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 3

an inflation and sealing assembly operable to inflate the web material with a fluid by directing the fluid between superimposed plies of the web material

Methodology Applied
Scientific EffectFluid pressure: Pressure Increase

Implementation Method 4

Heat is then used to bind two layers of the film together forming a seal, which limits air from escaping

Methodology Applied
Scientific EffectHeating: Heating

Data Source

PatentUS11407193B2Guide member with expansion element for inflation and sealing assembly
Publication Date: 2022.08.09 PREGIS LLC
  • US11407193B2 patent drawing
  • US11407193B2 patent drawing
  • US11407193B2 patent drawing

AI summary

The present disclosure is directed to a web inflation and sealing apparatus. The device may include a support member for holding a supply of web material and sealing apparatus may include an inflation and a sealing assembly operable to inflate the web material with a fluid by directing the fluid between superimposed plies of the web material and to seal the plies together to seal the fluid therein. The apparatus may include a guide member positioned between the support member and the inflation and sealing assembly such that when the web material is routed from the supply toward the inflation and sealing assembly via the guide member the web material follows a curved longitudinal path. The guide member may define a web-supporting surface extending transversely to the longitudinal path with an elevated profile portion defining at least a portion of the web-supporting surface.