M.WATANABE & CO., LTD.
M.WATANABE & CO., LTD.
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Semiconductor Field, Parts
Silicone Products
Silicone
Silicone is polymer which consists of –Si-O-Si- with organic group. Silicone is chemical material having both organic and inorganic properties. In addition to being excellent in heat resistance, weather fastness and electric properties. Silicone products come in various forms such as rubbers and resins. Silicone is widely used in every industry and is an indispensible high performance material.
Applications
  • Liquid silicone rubber Adhesive seals / Coating on electric parts, etc. / Molding
  • Millable type silicone rubber Gaskets / Rolls / Insulating rubber parts / Heat resisting rubber parts / Flame resisting rubber parts
  • Silicone resin Heat resisting paints / Weather resisting / Chemical resisting paints / Release agents / Surface protection of plastics
  • Silicone oil Damper oils / Lubricating oils / Foam stabilizer / Lipsticks / Ointment
  • Silicone varnish for electrics High temperature insulator / Vanish for mica binding / Varnish for paints
  • Silicone varnish for paints Heat resisting paints / Weather resisting paints / Chemical resisting paints
  • Silicone as polymer additive Polyurethane foam stabilizer / Polyvinylchloride foam stabilizer / Leveling agent for paints
  • Silicone grease Lubricants for ball bearings, gas utansils and high temperature furnaces
  • Oil compounds Fillers for electric insulation, moistureproof seals, waterproof seals and heat release
  • Releasing Silicone Releasing agent for metal frame of concrete and casting mold / Prevention of copper wire adhesion
  • Defoaming Silicone Defoaming agent of paints and latexes mixture / Defoaming agent for waste water treatment
  • Water repellent Silicone Moistureproofing of switchboards / Surface protection of rubbers, etc. / Water repellent treatment
  • Silicone compounds Plastic modifier / Water repellent treatment of concrete and mortar
  • Silicone for household Adhesive sealing agents / Rust preventive lubricants / Protecting and polishing agents
  • Silicone for electronics Insulating materials / Potting materials / Coating materials
  • Silicone resin fine powder Modifier for rubbers, paints, synthetic resins and cosmetics, etc.
Silicone Rubber Products
WACOM Silicone Rubber Moldings
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Property 1. From high precision products to general products
We are able to meet requirement of high precision silicone rubber moldings which has been difficult to produce by the usual rubber molding method. Rubber switches with conductivity rubber are available. General products of low cost are produced by an overseas collaborator.

Property 2. Strict inspection regarding outward appearance and foreign materials

Being produced in a fully cleaned plant, moldings are mostly free from contamination and are ideal for semiconductor related parts and medical related parts.
Property 3. Early Deliver
It is of course necessary to consider whether the work is difficult or not, but we need only a short period from preparation of dies to sample delivery.
Property 4. Special requirements, production of complicated shape
Our engineers will select and combine the most suited silicone rubber materials to produce the best products required by customers. Consult us about your requirement which you have given up due to difficult molding. Our staff will make research as much as possible.
WACOM Silicone Rubber Sheet, Rubber Cap
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General Silicone rubber tube
General Silicone rubber sheet
   Here for size list   PDF : silicone_rubberstd.pdf 

Extruding products in variety

Special Silicone Rubber Sheet
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Available hardness range is from 10 degrees to 90 degrees. We are able to meet requirements of special characteristics such as conductivity, noncombustibility, heat resistance, heat radiation, high tear resistance.
Masking Rubber Sheet for Lead Frame Plating
Masking Rubber Sheet for Lead Frame Plating
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Wacom Manufacturing Co., Ltd.

We supply silicone rubber sheet of low hardness for masking for lead frame plating.
Hardness 0 ~20 degree Hs JIS A
Thickness 0.3 ~1.5 mm
Substrate PET film with adhesive tape
Bakelite, Others

Please inquire the specification of hardness, thickness and others.
For detail: PDF:Silicone_RubberMASK_eng.pdf

Lapping and Polishing Carrier
Carrier for Lapping and Polishing
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As to carrier for wafer polishing, we use various materials such as metals (SK, SUS etc.) and resin (Epoxy Glass, Alamide). Also, injection moldings with resin and elastomer around the hole are possible to prevent damages on the wafer surfaces.
Plastic Products
Plastic Processing Products
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We are prepared to meet customers’ various requirements. We have accumulated knowledge about resin ranging from general en-pla to super en-pla.
Machining Parts
Machine Processing Parts
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Property of parts manufacturing
In order to meet every requirement, skilled workers input an automatic program of processing conditions such as cutting conditions and tool exchanges. Machines work based on data acquired by such program. Automatic processing by MC and NC enables to produce the parts of great variety efficiently. Also, we have measuring tools of high precision for inspection and measurement so that we would produce products of high precision and high quality as required.
Parts Reclaim
Parts Recycling Cleaning
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What is recycling cleaning?
It is thorough cleaning of parts like Depo-Shield used in spattering system and etching system. Process of cleaning is removing the deposition film, giving surface treatment, precise cleaning, and degassing drying. Thoroughly cleaned parts are delivered to customers by airtight packaging.
Characteristic
We supply parts of high reliability.
  1. Surface of each part is coated by aluminum film or others by plasma or arc sprays. This improves maintenance of deposition film and decreases particles caused by dropping of particle and coming off of flake.
  2. Based on the rising temperature and degassing data, vacuum baking conditions are programmed. This minimizes occurrence of troubles due to degassing from recycling parts.
  3. Cleaning is a continuous operation in the clean room from precise cleaning to airtight packaging so that returned parts would be good to be used immediately.
  4. Every part is inspected before delivery based on our own inspection standard for quality guarantee.
  5. Standardization made it possible to recycle the parts uniformly.