Absorbent Sheet Particle Collision Surface Scattering Control
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Solution Overview
Problem
Existing absorbent-article sheet member manufacturing apparatuses face issues with particle scattering during the production of absorbent sheets for disposable diapers, particularly when particles collide with the second sheet conveying roller and bounce back, leading to inefficiencies in particle distribution and sheet quality.
Innovation Solution
The apparatus incorporates a supply cylinder with inclined supply holes and a particle collision surface that directs emitted particles onto the first sheet member, reducing collisions with the second sheet conveying roller and utilizing side wall and partition parts to minimize sideways scattering, thereby enhancing particle collection and sheet bonding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If particles are supplied onto the first sheet member using a conventional supply mechanism, then the particles can be distributed onto the sheet, but particles collide with the second sheet conveying roller and bounce back, causing scattering in the surroundings
Solution Approach 1:
A particle collision surface (intermediary structure) is introduced between the supply cylinder and the second sheet conveying roller. This collision surface intercepts particles that would otherwise collide with the second sheet conveying roller, causing them to bounce back and scatter. The collision surface redirects these particles onto the first sheet member, converting harmful scattering into useful particle distribution.
Solution Approach 2:
The invention converts the harmful effect of particle bounce-back into a beneficial function. Instead of allowing particles to scatter harmfully when they miss the first sheet member, the collision surface captures these bouncing particles and redirects them onto the first sheet member, transforming waste particles into useful material that contributes to the absorbent sheet formation.
2Ease of operation
If the second sheet conveying roller is used to convey the second sheet member, then the sheet can be transported and layered, but particles collide with it and bounce back upwardly or laterally, increasing scattering
Solution Approach 1:
The particle collision surface acts as an intermediary barrier between the particle supply zone and the second sheet conveying roller. It intercepts particles before they can collide with the second sheet conveying roller, preventing the harmful bounce-back effect while allowing the second sheet conveying roller to continue its essential function of conveying and layering the second sheet member.
3Quantity of substance
If particles are emitted from supply holes in the supply cylinder, then absorbent material can be supplied onto the sheet member, but without proper guidance, particles scatter sideways reducing manufacturing precision
Solution Approach 1:
The particle collision surface serves as a guiding intermediary that redirects particles onto the first sheet member. By positioning this collision surface appropriately, particles that are emitted from the supply cylinder are guided onto the intended target (first sheet member) rather than scattering sideways, thereby improving manufacturing precision while maintaining adequate particle supply quantity.
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 configuration effectively suppresses particle scattering and ensures efficient distribution of absorbent material onto the first sheet member, improving the quality and consistency of absorbent sheets by guiding particles directly onto the sheet while reducing bounce-back and scattering.
Implementation Method 1
a particle collision surface that extends from the cylinder outer surface in between the lowermost part of the supply cylinder and the second sheet conveying roller, and for colliding with some of the particles that are emitted forward in the rotation direction of the supply cylinder from a supply hole that has passed the half cover part and guiding the colliding particles onto the first sheet member
Data Source
AI summary
An absorbent sheet manufacturing apparatus has a particle collision surface (224) that extends downward from a cylinder outer surface (211) in between the lowermost part of a supply cylinder (21) and a second sheet conveying roller (41). Some of the particles emitted forward in the rotation direction of the supply cylinder (21) from recessed supply portions (212) that have passed a first cover part (221) collide with the particle collision surface (224), and the colliding particles are guided by the particle collision surface (224) onto a first sheet member (91). This suppresses direct collision of particles emitted from the supply cylinder (21) with a second sheet member (92) on the second sheet conveying roller (41). Scattering of particles that have collided with the second sheet member (92) around the first sheet member (91) and the second sheet member (92) is thus suppressed.