Press-to-Bond Multiply Paper Sheet Without Adhesive Glue
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Solution Overview
Problem
Current hygiene paper products bond paper plies using glues, increasing costs and causing environmental issues, while also resulting in monotonous and boring patterns.
Innovation Solution
A press-to-bond structure using concave-pattern and convex-pattern presser rollers to bond paper plies without adhesives, creating a three-dimensional pattern and enhancing product stability and consumer appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If glue is used to bond paper plies together, then the adhesion between plies is improved, but the manufacturing cost increases and environmental harm is caused
Solution Approach 1:
The patent removes the harmful element (glue) from the bonding process entirely. Instead of using adhesive substances, the invention employs a mechanical pressing method where a presser roller applies pressure to bond paper plies through direct compression, eliminating the need for glue and its associated environmental harm while maintaining ply adhesion
Solution Approach 2:
The patent replaces the chemical bonding mechanism (glue adhesion) with a mechanical bonding mechanism (pressing force). The presser roller applies mechanical pressure to the paper plies, creating bonds through compression and friction rather than chemical adhesion, thus substituting a mechanical system for a chemical one to avoid environmental contamination
2Strength
If glue is used to bond paper plies together, then the plies are firmly bonded, but the patterns become monotonous and boring
Solution Approach 1:
The presser roller surface is designed with locally differentiated features including patterned regions with varying pressures, textured areas, and decorative elements. These local variations in the presser roller create diverse patterns on different sections of the paper plies while maintaining adequate bonding strength in each region
Solution Approach 2:
The presser roller serves multiple functions simultaneously: it applies bonding pressure to adhere plies together, creates decorative patterns on the paper surface, and provides textural variations. This multi-functionality allows a single component to achieve both strong bonding and aesthetically appealing diverse patterns without relying on glue
3Strength
If glue is applied to bond paper plies, then the bonding effectiveness is improved, but the manufacturing cost increases
Solution Approach 1:
The patent eliminates the need for expensive adhesive materials by using a mechanical pressing system. The bonding effectiveness is achieved through controlled application of pressure from the presser roller, removing the cost associated with purchasing, storing, and applying glue while maintaining effective ply bonding
Solution Approach 2:
The pressing mechanism utilizes the inherent properties of the paper material and the mechanical force applied during the winding or manufacturing process itself to achieve bonding. The system leverages the existing manufacturing flow and material characteristics to create bonds without requiring additional bonding agents or complex bonding equipment, thereby reducing manufacturing costs
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 solution effectively bonds paper plies without glues, reducing manufacturing costs and environmental impact, while creating aesthetically appealing patterns that enhance consumer experience and product stability.
Implementation Method 1
After the stacking zone is subjected to rolling operation by a rolling pressure, a plurality of first pressed sections are formed on the first thin paper layer
Implementation Method 2
A first thin paper layer and a second thin paper layer are simultaneously transmitted through between the presser rollers, subjected to rolling for forming a multiply thin paper sheet
Data Source
AI summary
A multiply thin paper sheet having a press-to-bond structure is disclosed, including a first thin paper layer having a first stacking surface and at least one second thin paper layer having a second stacking surface. The first and second stacking surfaces are partially overlapped with each other to define a stacking zone provided between the first thin paper layer and the second thin paper layer. After the stacking zone is subjected to a rolling operation by a rolling pressure, a plurality of first pressed sections are formed on the first thin paper layer, having a predetermined height extended according to a given direction, and a plurality of second pressed sections are formed on the second thin paper layer according to the given direction and respectively corresponding to the first pressed sections of the first thin paper layer. At least one portion of each first pressed section and the respective corresponding second pressed section are bonded and formed as a pressed and bonded site, such that the first thin paper layer and second thin paper layer can be pressed, bonded and patterned simultaneously.