Textile Curing Oven with Active Cooling Zones
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current ovens fail to simultaneously heat thermosetting adhesives on the back surface of textile articles while protecting the pile surface from excessive heat, leading to fiber shrinkage, curling, and damage during the manufacturing of carpet and synthetic turf products.
Innovation Solution
An oven design with a curing chamber for heating and a separate cooling zone with higher pressure airflow to actively cool the pile surface, preventing heat leakage and maintaining the pile surface at a lower temperature, while heating the adhesive to a sufficient temperature to bond with fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the textile article is heated to cure thermosetting adhesives, then the adhesive bonding strength is improved, but the thermoplastic fibers and backing materials undergo shrinkage and damage
Solution Approach 1:
The oven is divided into distinct heating zones and cooling zones along the transport path. The heating zones apply heat to cure the adhesive while the cooling zones immediately follow to cool and stabilize the thermoplastic fibers, preventing shrinkage and damage while maintaining effective adhesive bonding
Solution Approach 2:
Different regions of the textile article receive different thermal treatments. The back surface receives intense heating for adhesive curing while the pile surface receives cooling to prevent fiber damage. This localized differential treatment allows simultaneous achievement of strong bonding and fiber stability
2Productivity
If the oven temperature is increased to improve adhesive curing, then the curing efficiency is improved, but the fiber shrinkage and damage increases
Solution Approach 1:
Cooling zones are positioned immediately after heating zones to preemptively cool the thermoplastic fibers before they can undergo significant shrinkage or damage. This preliminary cooling action prevents the harmful effects of high temperature exposure while allowing the adhesive curing process to complete at elevated temperatures
Solution Approach 2:
The textile article moves rapidly through the high-temperature heating zones to complete adhesive curing quickly, then immediately enters cooling zones. This rapid transit through the harmful high-temperature environment minimizes the duration of fiber exposure to damaging temperatures while still achieving effective curing
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 oven effectively reduces fiber shrinkage and damage, achieving less than 1% shrinkage in polyethylene fibers, with improved tuft lock strength and reduced curling, by maintaining a higher curing chamber temperature without damaging the pile surface.
Implementation Method 1
a cooling zone disposed below the transport means and means for supplying a cooling airflow to the cooling zone at a rate sufficient to maintain the pile surface at a temperature lower than the curing chamber temperature
Implementation Method 2
a curing chamber at an elevated temperature and means for supplying a heated airflow to the curing chamber
Data Source
AI summary
An oven for bonding adhesives to the back surface of a textile article includes a housing with a transport frame for passing the textile article through a curing chamber within the housing. The oven also has an air source and a duct system that delivers an airflow into a cool zone on the opposite, pile surface side of the textile article. The airflow has a lower temperature than the elevated temperature of the curing chamber and is supplied to the cool zone in sufficient amounts such that the pressure in the cool zone exceeds the ambient pressure in the curing chamber.