Used material

Main materials used in our products and their characteristics and applications.

金属

Metal name Feature Uses/Remarks
Aluminum One of the lightest metals. Easy to process. Surface treatment is necessary because it is weak against acid and alkali. Shoe spatula, card case, ID capsule
Silver Easy to make fine. It is easy to lose the luster. Accessories
Brass An alloy of copper and zinc. Good elongation and easy shaving, making it easy to process. It has a unique luster when plated. Easy to weld with solder.
【Note】
The brass material for cutting (sawed) contains about 2% lead, so be careful when handling it.
Key ring, heaton, pull ring
copper In the case of our products, copper is rarely used alone in molded products, and it is used as an alloy material or plating. Brass products (brass is an alloy of copper and zinc)
Fri The most stretchable metal. It has a beautiful luster. Accessories
lead One of the heavy metals. It is soft and easy to extend, so it is easy to process.
【Note】
Previously, rubber casts contained about 5-90% lead, but now we are switching to lead-free materials.
Rubber cast moldings/solder
zinc It is easy to corrode and weak, so it is rarely used as zinc itself. Widely used as an alloy material. Die cast moldings such as snap hooks
Tin It has a low melting point and is a soft and weak metal. It is used as an alloy material and is also used as a plating because it is not easily attacked by acids and alkalis. Rubber cast moldings/solder
stainless Non-magnetic, resistant to high temperatures and does not rust. It has a beautiful luster, but is difficult to process and work on. hairpin
Nickel silver Contains 10 to 20% brass nickel and has good corrosion resistance. Since it has a good spring property, it is also used as a spring material. Needle/Oval
Phosphor bronze 3-9% tin and 0.03-0.35% phosphorus are added, which is hard and has high tensile strength. Double ring
It is a hard and strong metal, and its strength and hardness properties can be freely adjusted by adding elements of other metals or performing heat treatment. Marukan, Double Ring, Rocket, Zem Clip
platinum Although it is a soft metal, it is not easily scratched and has excellent durability. Among the precious metals used in jewelry, it is the strongest, has a high melting point, has excellent durability, and is highly compatible with scientific substances. Accessories

Plastic resin

Plastic resin name Feature Uses/Remarks
PVC
[PVC]
By mixing polymer material (poly) and stone powder, it has accuracy close to plastic and weight close to stone. Since it is possible to mold three-dimensionally with an inexpensive silicon mold, it is profitable when producing small lots of original products. Cell phone strap cap/resin buckle
Polystone
(Polyresin)
By mixing high-polymer material (poly) and stone powder, it has accuracy close to plastic and weight close to stone. Since it is possible to mold three-dimensionally with an inexpensive silicon mold, it is profitable when producing small lots of original products. 3D character molding
ABS resin Beautiful appearance and withstands shock. High surface hardness and gloss, and excellent moldability. Can be plated. Cell phone strap cap/resin buckle
polyethylene
Terephthalate
[PET]
It has excellent fiber, film and blow functions, and is used for bottles of drinking water and films for building materials. It is transparent and strong and resistant to chemicals. Card case, eco bag
Polyurethane
[PU]
It has the characteristics of high elongation and high elasticity. We also pay attention to the solvent so that harmful organic solvents do not cause air pollution. Stress releaser coil
Polylactic acid
[PLA]
A non-petroleum biodegradable plastic processed from starch such as corn. Low carbon dioxide emissions during production and disposal. An ecological plastic that is decomposed into water and carbon by microorganisms in the soil and returns to nature. Rubber cast moldings/solder
polystyrene
[PS]
Hardest and cheapest transparent material. In addition to hard plastic, there is also a foaming type, which is used for foaming polystyrene and food trays. Beads such as bead straps
Polyacetal
[POM]
High strength and excellent wear resistance Buckle for neck piece
Polycarbonate
[PC]
Excellent transparency, excellent impact resistance and heat resistance Pen case/LED light transparent cover
acrylic resin
[PMMA]
It has high transparency, chemical resistance, and outstanding weather resistance, and is widely used from outdoor applications to optical lenses. Photo frame (hamepachi), logo plate, zodiac parts
polyamide
[PA]
Durable, heat and chemical resistant, and impermeable to oxygen.
(Generally called nylon, but nylon is a trademark)
Strap tape (nylon fiber)
EPDM
[EPDM]
Synthetic rubber with improved processability by bonding diene to ethylene-propylene rubber (EPR). Good weather resistance, ozone resistance, heat resistance, chemical resistance and inexpensive price. Silencer for dog tag (rubber for identification tag)

Synthetic fiber

Synthetic fiber name Feature Uses/Remarks
polyester It is one of the strongest scientific fibers and is less likely to wrinkle. Less hygroscopic. Stuffed toy/strap tape
Nylon Stronger in friction and bending than other scientific fibers, supple and glossy. Strap tape
Polylactic acid A non-petroleum-based biodegradable resin processed from starch such as corn. An ecological material that decomposes into water and carbon by microorganisms in the soil and returns to nature. It is not suitable for long-term products because it is more easily degraded than general scientific fibers. Key ring, heaton, pull ring

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