Introduction
Water-resistant materials are less likely to deteriorate when exposed to moisture and humidity, while offering excellent waterproofing and durability. These materials find use in a wide range of sectors, from the construction of private buildings and public infrastructure to marine industries, healthcare, and the agri-food sector.
In this column, we explore the main types of water-resistant materials and their characteristics.

Plastics
Polypropylene (PP)
– Features: Highly resistant to water and chemicals, yet lightweight
– Applications: Water tanks, pipes, and food containers
Polyethylene (PE)
– Features: Excellent water resistance and flexibility
– Applications: Water jugs, films, and tubing
Fluoropolymer (PTFE)
– Features: Exceptional resistance to water, heat, and chemicals
– Applications: Sealing materials, coatings, and components for chemical processing equipment
Metals
Stainless steel (SUS304, SUS316)
– Features: High water and corrosion resistance
– Applications: Piping, tanks, and commercial kitchen equipment
Titanium
– Features: Excellent corrosion resistance (e.g. seawater)
– Applications: Marine components and medical equipment
Aluminum (Anodized)
– Feature: Improved water resistance through anti-corrosion surface treatment.
– Applications: Exterior materials and ship parts
Ceramics
Glass
– Features: Impermeable to water, chemically stable.
– Applications: Water tanks, windows, and containers
Zirconia
– Features: Exceptional hardness, resistant to water and chemicals.
– Applications: Dental equipment and ceramic knives
Fiber Reinforced Plastic (FRP)
– Features: Exceptional water resistance, high tensile strength yet lightweight
– Applications: Boats, bathtubs, and water tanks.
Summary
Water-resistant materials can significantly improve the durability and functionality of a product when properly selected for the right application. Understanding the distinct characteristics of each material, such as resin, metal, and ceramics, enables optimal material selection for each use case.
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ABOUT UCHIDA - 55 years since our founding
We leverage a wealth of technical expertise as a CFRP molding and processing manufacturer using FRP, GFRP, and CFRP materials. We offer a one-stop solution, encompassing design, analysis, manufacturing, secondary processing, assembly, painting, quality assurance, and testing.
We have cutting-edge equipment to ensure that we can address even the most advanced challenges of our customers.
DMG森精機 - VS1000/40/2050
X軸:2,050mm(ストローク) / Y軸:1,000mm / Z軸:600mm / テーブル作業面:2,250×1,000mm
ASHIDA MFG Co., Ltd.
Autoclave Oven 2
Size : Ø1,150x1,000mm / Operating temperature : at normal temperature - 400℃ / Design pressure : 2.0Mpa (maximum working pressure) / Vacuum system : back suction system / Vacuum units : 5
ASHIDA MFG Co., Ltd.
Autoclave Oven 3
Size : Ø3,000x6,000mm / Operating temperature : at normal temperature - 200℃ / Distribution accuracy : ±2.5℃less / Heating rate : 4.0℃/min. (empty furnace) / Cooling rate : 4.0℃/min. (empty furnace) / Design pressure : 0.99Mpa (maximum working pressure) / Working pressure : 0.7Mpa less (if no specification from the manufacuturer 0.3Mpa around) / Pressure accuracy : ±0.02Mpa(for pressure setting of 0 - 0.99Mpa/cm²) / Boost pressure accuracy : 0 - 0.03Mpa/min / Pressure source : compressed air (regular use) / Vacuum system : back suction system / Vacuum units : 10
Oven
Size : W1,000xH1,000xD1,000mm / Temperature range : Environmental Temperature +20 - 300℃ / Temperature elevation capability : Environmental Temperature (20 - 40℃) - 300℃ / 45min less / Vacuum system : back suction system / Vacuum units : 10
ESPEC CORP.
Temperature & Humidity Chamber
INSTRON
Static Universal Testing Machine 5985
Oven
Size : W7,000xH3,000xD2,000mm / Temperature range : Environmental Temperature +20 - 300℃ (Max) / Temperature elevation capability : Environmental Temperature (20 - 40℃) - 300℃ / 60min less / Vacuum system : back suction system / Vacuum units : 10
NEO
X axis : 4,000mm (stroke) / Y axis : 2,000mm / Z axis : 1,200mm / C axis : 0° - ±270° / B axis : 0° - ±110° / Table working place : 4,000x2,000mm
【開発】
3Dプリンター | Markforged
Painting booth
Various painting, and clear finish is done in dedicated painting booth
Adhesion, Finishing, Coating Room
Finishing process, such as trimming, drilling, and bonding, surface treatment of the molded product type and is done in a private booth
Toshiba Matrixeye EX (Ultrasonic flaw detector)
Matrix-Arrey : 32
AMETEK CREAFORM Metra
SCAN750 Elite (3D scan)
Olympus Corp.
Inverted Microscopes
Oven
Size : W450xH450xD450mm / Temperature range : Environmental Temperature +20 - 650℃ / Temperature elevation capability : Environmental Temperature+50 - 650℃/120min less
Cutting Plotter Table working place : W1,500xL3,500mm
SHIMA SEIKI MFG., LTD
Cutting Plotter
Krauss Maffei
Epoxy resin injection machine Resin 60L / Hardener 25L
Krauss Maffei
630t Press machine Height total 5,200mm / Length max 1,500mm / Width max 1,200mm / Whole cycle time per component part 240sec
DMG森精機 - NV5000B/40
X軸:1,020mm(ストローク) / Y軸:510mm / Z軸:510mm / テーブル作業面:1,320×600mm
Big sized clean room
JIS B 9920 cleanliness class maximum concentration (Pcs/m³) / Class 5 : 100,000m³ / Capacity : m² (16,000x16,000mm) 760m² (16,000x16,000x3,000mm) / Temperature and humidity condition : Temperature : 23℃±3℃, Humidity 65% less / Ambient conditions : Temperature 35℃ during summer, Humidity 70% less / Ambient conditions : Temperature 35℃ during summer, Humidity 70% less / Temperature -5℃ during winter, Humidity 40% less
CAD / CAM
CATIA V5 : 2 / THINK DESIGN : 1 / MASTER CAM : 4 / Other 3D/CAD : 3 / Other 2D/CAD : 5
In the following video, we provide a detailed overview of our manufacturing process. Please feel free to watch and learn more.