All your footwear questions answered.

PVC (Polyvinyl Chloride) Gumboots 

Benefits: 
Affordability: PVC gumboots are generally less expensive to produce and, therefore, often more affordable for consumers. 
Water Resistance: PVC is naturally water-resistant, making it suitable for wet environments. 
Chemical Resistance: PVC gumboots can resist a variety of chemicals, making them ideal for certain industrial settings. 
Durability: These boots offer decent abrasion resistance, though they may not be as long-lasting as some PU variants. 
Flexibility: PVC can be flexible, although its flexibility might decrease in very cold temperatures, making the boots more prone to cracking. 

Comparisons: 
Weight: PVC gumboots tend to be heavier than PU gumboots. 
Breathability: PVC boots generally offer less breathability than PU boots. 
Environmental Impact: PVC production and disposal can have a more adverse environmental impact than PU, given the presence of chlorine and potential release of dioxins. 

PU (Polyurethane) Gumboots 

Benefits: 
Lightweight: PU gumboots are often lighter than PVC boots, making them more comfortable for prolonged wear. 
Thermal Insulation: PU offers better insulation against cold compared to PVC, making PU gumboots suitable for colder environments. 
Flexibility: PU boots maintain flexibility over a broader range of temperatures. 
Durability: PU is generally more tear-resistant and can be more durable than PVC in certain conditions. 
Breathability: Some PU boots are designed to be more breathable than PVC variants, offering better moisture management for the feet. 

Comparisons: 
Cost: PU gumboots can be more expensive than PVC gumboots due to the cost of materials and production processes. 
Environmental Impact: PU often has a lower environmental impact in terms of production and disposal compared to PVC. 
 

PVC (Polyvinyl Chloride) 
Differences:
PVC is a type of plastic that is used for a variety of purposes, including shoe soles. It's generally cheaper to produce than some other materials. 
Benefits: 
Water Resistance: PVC is naturally resistant to water, making it suitable for wet environments. 
Chemical Resistance: Resistant to a variety of chemicals, though not all. 
Cost-Effective: Often more affordable than other sole materials. 
Durability: Good abrasion resistance, but not the most durable option compared to the others on the list. 

PU (Polyurethane) 
Differences:
PU is a type of polymer that offers good elasticity and flexibility. 
Benefits: 
Lightweight: PU soles are often lighter than other types, providing comfort for prolonged wear. 
Shock Absorption: Good cushioning properties, making them suitable for workplaces where workers are on their feet for extended periods. 
Thermal Insulation: Can offer decent insulation against cold environments. 
Durability: Resistant to splitting and abrasion, though exposure to humidity or heat for extended periods can degrade PU.

TPU (Thermoplastic Polyurethane) 
Differences:
TPU is a type of plastic that combines the benefits of hard plastics and soft silicones. 
Benefits: 
Flexibility: Offers a balance between flexibility and toughness. 
Abrasion Resistance: High resistance to wear and tear, making it suitable for rugged environments. 
Oil Resistance: Suitable for industries where oil spills are common. 
Grip: Provides good traction in various conditions, reducing the risk of slips. 
Durability: Tends to be more durable than PU in certain conditions and resists hydrolysis (breakdown due to water exposure) better. 

Nitrile Rubber 
Differences:
This is a synthetic copolymer of acrylonitrile and butadiene. It's known for its excellent resistance to oils and chemicals. 
Benefits: 
Heat Resistance: Can withstand high temperatures, making it suitable for industries like foundries or welding. 
Oil and Chemical Resistance: One of the best materials for resisting oils, fats, and chemicals. 
Durability: Good abrasion resistance and long-lasting. 
Flexibility: Despite its toughness, it can be flexible, depending on the formulation. 
Grip: Offers good slip resistance in various conditions. 

Ultraviolet (UV) Radiation

One of the most common causes of discoloration in plastics and polymers is exposure to UV radiation, primarily from sunlight. UV radiation can break down the chemical bonds in PU, leading to changes in its structure and, consequently, its color. This is often referred to as "UV degradation." 

Oxidation

 Over time, PU can undergo oxidation when exposed to the oxygen in the air. This oxidation process can change the material's color. Oxidative reactions can be accelerated by factors like high temperatures or the presence of certain contaminants. 

Heat Exposure

Extended exposure to high temperatures can affect the integrity and coloration of the PU material. This can be due to direct heat or prolonged exposure to environments with elevated temperatures. 

Chemical Exposure

If the gumboots come into contact with various chemicals or substances (like certain cleaning agents), these can sometimes cause reactions that lead to discoloration. 
Heat Exposure: Extended exposure to high temperatures can affect the integrity and coloration of the PU material. This can be due to direct heat or prolonged exposure to environments with elevated temperatures. 

Additives and Stabilizers
Some PU products have additives or stabilizers, which are added during manufacturing for various purposes, such as improving the product's properties or lifespan. Over time, these additives can degrade or react with other factors (like UV light), contributing to discoloration. 

Moisture

Although PU is generally resistant to water, prolonged exposure to moisture can sometimes accelerate discoloration, especially if combined with other factors like heat or contaminants. 

Remove Loose Dirt and Debris
Before applying any cleaning solution, it's crucial to remove any loose dirt from the gumboots. This can be done by knocking the boots together or using a brush to scrub away any clinging particles. 

Pre-Wash
Rinse the gumboots using lukewarm water to remove any remaining dirt or debris. This prepares the boots for a more thorough cleaning. 

Cleaning 
Use a mild detergent or soap that's safe for the gumboot material (PVC, PU, etc.). Using a brush, scrub the gumboots thoroughly inside and out. Ensure you reach all the crevices and seams.  For stubborn stains or grime, consider using a soft-bristle brush to avoid damaging the boot material. 

Rinsing 
Rinse the boots thoroughly with clean water to ensure all detergent or soap residues are removed. Residues can attract more dirt or may not be suitable for a food processing environment. 

Sanitizing
In a food processing plant, merely cleaning might not be enough. Sanitizing the boots is essential to kill bacteria, fungi, and other potential pathogens.Use a food-safe sanitizer or disinfectant. Immerse the gumboots in the sanitizing solution or spray it generously on the boots, ensuring total coverage. 
Let the boots stay in contact with the sanitizer for the recommended time on the product label to ensure effective disinfection. 

Drying
After cleaning and sanitizing, let the boots dry completely before using them again. This can be done by hanging them upside down or placing them in a well-ventilated area. 
Avoid placing them directly in sunlight or near a heat source as this can degrade some boot materials over time. 

Regular Maintenance
In a food processing environment, regular cleaning is essential. Depending on the exposure and type of food processing, daily cleaning might be necessary. 

Inspection
Regularly inspect the gumboots for signs of wear, tear, or damage. In a food processing plant, compromised footwear can be a potential source of contamination. Replace boots that show signs of excessive wear.