Paperboard Carrier Coating for Chemical Barrier
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing paperboard tubes used to carry wound materials, such as yarn, face issues with chemical transfer from the yarn to the tube, leading to deterioration in downstream processing, and existing solutions like specialty coverings have drawbacks including gaps, bumps, and inadequate chemical resistance as textile coatings become more aggressive.
Innovation Solution
A paperboard carrier with a liquid coating applied to the outer surface, comprising a silicone resin or fluoroalkyl acrylate copolymer emulsion in a solvent, providing a durable moisture barrier and preventing chemical migration, which can be applied in a continuous, uninterrupted manner without the need for heated curing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If specialty coverings (parchment or greaseproof papers) are wound helically onto the paperboard core, then chemical transfer is reduced, but gaps appear between each wrap and the surface becomes uneven with bumps at overlapping joints
Solution Approach 1:
The patent applies a liquid coating that forms a continuous flexible film on the paperboard core surface. This coating method eliminates the gaps and bumps inherent in helically wound specialty paper coverings, while maintaining effective chemical barrier properties. The liquid coating conforms to the cylindrical surface and cures to form a uniform protective layer.
Solution Approach 2:
The patent replaces the mechanical assembly of wound specialty paper layers with a liquid coating application process. Instead of physically winding and overlapping paper layers, the liquid coating is applied and cured to form a continuous barrier, eliminating the mechanical imperfections of gaps and overlapping joints.
2Object-affected harmful factors
If specialty paper coverings are used to prevent chemical transfer, then chemical resistance improves, but recycling becomes costly requiring removal or sophisticated sorting equipment
Solution Approach 1:
The patent changes the physical state of the protective coating from solid specialty paper layers to a liquid coating that cures to a flexible film. This parameter change allows the coating to be applied in a continuous manner and facilitates easier recycling compared to wound paper coverings, as the liquid coating can be more readily removed or degraded.
Solution Approach 2:
The patent uses a composite coating system comprising a fluoroalkyl acrylate copolymer emulsion and a silicone resin. This composite material provides superior chemical resistance while maintaining compatibility with recycling processes, combining the benefits of organic and inorganic materials for enhanced performance and ease of disposal.
3Ease of manufacture
If conventional coatings are used on paperboard tubes, then manufacturing is simple, but they provide insufficient protection against aggressive textile chemical coatings
Solution Approach 1:
The patent employs a composite coating formulation combining fluoroalkyl acrylate copolymer emulsion and silicone resin. This composite provides superior chemical resistance against aggressive textile coatings while maintaining ease of application through liquid form, achieving both simple manufacturing and enhanced protective performance.
Solution Approach 2:
The patent modifies the coating parameters by using a liquid emulsion formulation that can be applied at room temperature without heated curing. The coating contains volatile solvents that evaporate during drying, leaving a cured protective film. This parameter change enables simple application processes while achieving robust chemical barrier properties.
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 coating effectively prevents chemical transfer from yarn to the tube, offering superior oil and chemical resistance, allowing for efficient recycling and compatibility with advanced textile coatings, while eliminating gaps and bumps associated with previous solutions.
Implementation Method 1
applying a coating onto the paperboard carrier. The coating may comprise a silicone resin in a solvent and little or no water
Implementation Method 2
The coating effectively prevents chemical transfer from yarn to the tube, offering superior oil and chemical resistance
Implementation Method 3
a liquid coating applied to the outer surface, comprising a silicone resin or fluoroalkyl acrylate copolymer emulsion in a solvent, providing a durable moisture barrier
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A paperboard carrier (10) suitable for use with textiles (20) may include one or more strips (32) of paperboard secured together to form a hollow tubular body, the body having an outer surface (14), and a coating (50) covering some or all of the outer surface (14). The coating (50) may comprise a coating agent such as a silicon resin dispersed in a solvent such as isopropyl alcohol but little or no water. The coating (50) may be applied to the outer surface (14) by using a plurality spray nozzles (40) arranged axially or circumferentially about the carrier (10).