Introduction
Water-resistant materials are resistant to deterioration when exposed to moisture and humidity, and have excellent waterproofing and durability properties. These materials are used in a wide range of fields, including construction and civil engineering, shipping, medical care, and the food industry. This column describes typical types of water-resistant materials and their characteristics.

Plastic Materials
Polypropylene (PP)
Characteristics: High water and chemical resistance, lightweight
Applications: Water tanks, pipes, food containers
polyethylene (PE)
Characteristics: High water resistance and flexibility
Applications: water jugs, films, tubes
fluoropolymer (PTFE)
Features: In addition to water resistance, very high heat and chemical resistance
Applications: sealing materials, coatings, chemical equipment parts
metallic materials
Stainless steel (SUS304, SUS316)
Characteristics: High water resistance and corrosion resistance
Applications: Piping, tanks, kitchen equipment
Titanium
Characteristics: High corrosion resistance to seawater
Applications: ship parts, medical equipment
aluminum (anodized)
Feature: Improved water resistance by applying anti-corrosion treatment
Applications: Exterior materials, ship parts
ceramics materials
glass
Features: impervious to water, chemically stable
Applications: water tanks, window glass, containers
zirconia
Characteristics: high water and chemical resistance, high hardness
Applications: dental materials, ceramic knives
fiber-reinforced plastic (FRP)
Features: high water resistance, light weight and high strength
Applications: boats, bathtubs, water tanks
Summary
Water-resistant materials can improve durability and functionality by selecting the right material for the right application. It is important to understand the characteristics of each material, such as resin, metal, and ceramics, and to use the right material for the right application.
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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
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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.