第一商工 List of Products and Services

Aesthetic Appeal. Introducing a transparent coating for plastics. Transparent plastics such as acrylic and polycarbonate tend to become cloudy and lose their clarity when machined. While acrylic can be polished to restore transparency, intricate shapes may not receive adequate polishing in all details. This is where transparent coating comes into play. It can be applied to materials such as polycarbonate, ABS, and PVC. How about using it for your company's planning and development models or for experiments and verifications with transparent devices? Being transparent can also enhance work efficiency in assembly jigs, making it versatile for various applications. Please feel free to consult us about realizing your ideas or any concerns you may have.

• Processing Contract
• plastic
• Surface treatment contract service

We respond to a wide range of needs, from cutting plotters and water jet processing suitable for small-scale production to die-cutting using Thomson-type and press-type methods for mass production. Additionally, we can produce high-quality composite products that include bending, double-sided tape application, and printing. We will propose the most suitable processing method based on shape, quantity, and material. If you have any concerns regarding material selection or processing, please feel free to consult us. We are committed to fully supporting you in bringing your ideas to life.

• Processing Contract

This is an introduction to water jet processing as a response to fine cutting processing of rubber and sponge. Are you having trouble with processed products such as small round holes or narrow long holes? We perform processing with a nozzle that has an injection port of 0.1 mm, so depending on the material and thickness, it is possible to create shapes that cannot be reproduced with press processing or plotter processing. Depending on the material and thickness, plastic cutting is also possible. Thanks to water jet processing, it is possible to create shapes where the cut-out part does not have a blade radius. (Please refer to the photo.) If there are shapes you thought were impossible to achieve, please consult with us.

• Resin processing machine

What methods are available for prototyping plastic products, and what can be achieved? Our company is capable of responding to inquiries from various industries, including measurement and sensor equipment, semiconductor manufacturing equipment, and medical devices, by offering prototyping support using various manufacturing methods. By proposing manufacturing methods that align with your development progress, we aim to support you in accelerating development speed and reducing development costs. Common inquiries we receive include: - Is it possible to prototype using special grade materials? - We have a certain shape determined through 3D modeling and would like to increase the quantity for prototyping. - Since the quantity is small, can we minimize initial costs and handle everything from prototyping to mass production? By consulting with us, you can save the effort of searching for suppliers and arranging meetings based on different manufacturing methods. Please feel free to reach out to us for a consultation.

• plastic

We have a track record of delivering processed products across a wide range of fields, from industrial equipment to medical devices. We can handle everything from single-item processing to mass production, and we also offer consultations on material selection during the design phase. Please feel free to contact us when you need our services.

• Processing Contract
• plastic
• Contract manufacturing

Rubber and sponge punching processing uses a die with cutting blades embedded in a base material known as a Thomson type to punch the material. The base materials can include wood, resin boards, metal sheets, etc., and are selected based on conditions such as dimensional accuracy, production time, and cost. Although the precision is inferior to that of molding with molds, it excels in cost due to the low cost of the die. *Depending on the lot size, delivery time, and accuracy, options for cutting and molding processing may also be effective. We will propose a processing method that meets your requirements. For more details, please refer to the PDF document or feel free to contact us.

• Rubber
• plastic
• Processing Contract

Do you have any projects or issues where you would like to prototype or produce soft materials such as rubber or sponge in single pieces or small quantities? Our company can shape soft materials through cutting processes to meet your requirements. We have a variety of materials with different hardness in stock, so please feel free to consult with us. (If it is difficult to manufacture due to complex shapes, we can also suggest alternative methods.)

• Rubber
• Processing Contract
• plastic

This is an introduction to 3D printing services. There are various methods of 3D printing. Are you unsure which method is best for your needs? Our company will provide you with the most suitable proposal based on your requirements from a variety of printing methods. - I want to know which manufacturing method is suitable for this application. - I want to produce small lots with a variety of products as cheaply as possible. - Is it possible to prototype with specified materials? - There are so many printing methods that I don't understand them well. If you find yourself in such a situation, please feel free to contact us. We accept inquiries for both resin and metal. 【Proposal for Various 3D Printing Methods】 - Fused Deposition Modeling (FDM) - Inkjet Method - Powder Sintering Layered Manufacturing Method - Stereolithography Method *Additionally, we can propose various methods for prototyping and small-scale production beyond 3D printing. Please feel free to inquire.

• plastic

We can handle processing from a single item to mass production of 1,000 pieces or more. We can deliver finished products according to drawings, including painting, surface treatment, Helicoil embedding, and press fitting. Please feel free to contact us.

• Other metal materials

Introducing rubber cutting processing. For those involved in cutting processing or handling processed products, it may be hard to imagine, but it is indeed possible to cut and shape soft rubber into three-dimensional forms. When people see the samples, they often say, "Isn't this rubber molding?" However, it is also possible to create certain shapes through cutting processing. There are no restrictions on material or hardness. While we cannot achieve tolerances like those in plastics or metals, we strive to meet our customers' requests as closely as possible. We do not give up just because it is rubber. Simple tasks are handled by machines, while difficult and interesting tasks are performed by humans (craftsmen). Since no molds are required, we can reduce costs and shorten delivery times. Are there any projects or shapes you have given up on thinking they would only be for one or two pieces? Please feel free to contact us.

• Rubber Processing Machine

Ah! It's the weekend today. If you find yourself in an emergency situation where you need parts urgently, such as missing necessary components for early next week or having overlooked an order, please contact us. Our site operates on weekends and holidays as well, so if materials are available and the processing machines have open slots, we can make "processing and shipping over the weekend" a reality. Depending on the materials, processing details, and quantities, we will do our best to accommodate your request with the best possible delivery time.

• Engineering Plastics

Before transitioning to mass production of plastic injection molded products and rubber molded products, do you have any need to create a few pieces for shape confirmation and assembly verification? If it's just one piece, a 3D printer would suffice, but if you require a larger quantity of prototypes, it may incur higher costs and take more time. With vacuum casting, it is possible to produce molds for casting at a low cost and in a short period, making it an effective processing method when producing a few to several dozen pieces needed for prototypes. Of course, it depends on the application, but it can also be used as a real product. You can choose from two materials: polyurethane elastomer and silicone rubber. - Polyurethane elastomer is available in hardness levels of 0, 7, 15, 20, 30, 40, 50, 60, 70, 80, and 90. - Silicone rubber is available in hardness levels of 40, 50, 60, and 70. - The casting sizes can be up to 900mm in length, 900mm in width, and 600mm in height, or 1400mm in length, 1400mm in width, and 300mm in height. Depending on the lot size and shape, we can also propose machining or molding using simple molds, so please feel free to consult with us.

• Resin processing machine

Introducing thermoplastic plastic molding. When it comes to mass production of plastics, injection molding is the way to go. Our company can handle molding not only for general plastics and engineering plastics but also for super engineering plastics like PEEK. Additionally, we offer integrated services including insert molding, two-color molding, as well as post-molding printing and plating. Please feel free to consult with us. 【What is super engineering plastic?】 It refers to materials with a continuous use temperature of over 150°C. Among them, PEEK has a continuous use temperature of 250°C, which limits the options for molding. 【What is two-color molding?】 It is a molding method that combines different resins or materials (e.g., plastic and elastomer) into a single unit. 【Our strengths】 Our company is also skilled in producing prototypes before molding. This allows us to handle everything from prototyping to mass production in a seamless manner, facilitating smooth communication regarding gaps and detailed discussions between the prototype and mass production stages.

• Engineering Plastics
• Injection Molding Machine

Introducing plastic grinding processing. Do you want to achieve dimensional accuracy in plate thickness but are concerned about machining marks (full back marks) in mechanical processing? Or do you have issues with wanting to improve dimensional accuracy beyond what you currently have? Our company can provide not only precision grinding of plastic plate thickness but also machining, allowing us to deliver finished products. 【Material Examples】 ■ Bakelite ■ PEEK ■ Glass epoxy We can also handle material procurement. 【Plate Thickness Accuracy】 ■ ±0.01 to ±0.05 The achievable accuracy varies depending on the material and size. *For more details on materials and sizes, please refer to the PDF catalog or feel free to contact us.

• Resin processing machine

Our company, based in Ueda City, Nagano Prefecture, started in 1957 with rubber die-cutting processing. Based on our accumulated experience, we can handle everything from prototypes and small lots to mass production. We excel not only in die-cutting rubber sheets but also in die-cutting rubber after applying double-sided tape. Although we use a simple die called a Thomson die for press die-cutting, the initial cost of the die varies depending on its size and quantity, but it is very inexpensive compared to press molds and forming molds, ranging from several thousand to tens of thousands of yen. One of the attractive features is that we can produce the die in about a week.

• Rubber Processing Machine
• Processing Contract
• Rubber

Based on our accumulated experience, we will propose the optimal processing methods from prototype and small lot production to mass production. We can handle not only film cutting but also double-sided tape application, bending processing, and printing. The main processing method will be using a Thomson die, but depending on the thickness and shape of the material, we can also accommodate intricate shapes using a Pinnacle die. For smaller quantities, we can also suggest processing using a cutting plotter.

• Processing Contract
• plastic
• Engineering Plastics

We offer not only die-cutting but also seal die-cutting (semi-die-cutting) with double-sided tape. The main method used is the Thomson type, which is a simple die-cutting method. We can also accommodate orders starting from one piece using cutting machine processing or water jet processing. We will select the processing method based on the shape and quantity and provide our suggestions. *In the case of thick materials, die-cutting can cause the material to be compressed while being cut, resulting in a drum-shaped cut surface, which may lead to issues. In such cases, we will provide suggestions other than press processing.

• Processing Contract
• plastic
• Rubber

This is an introduction to a method for producing prototypes using mass production materials before mass production. We often receive inquiries from customers who want to prototype using the materials that will be used in mass production, wish to create products with a small amount of molded material, or want to keep initial costs down. We would like to propose two possible methods for this. ■ Simple Mold Forming ■ Machining from Blocks Simple mold forming involves creating a low-cost temporary mold by changing the structure, number of cavities, and materials of the mold. This method may allow for a faster turnaround than starting with a production mold. Regarding machining from blocks, the materials that can be used are limited, but we can create blocks through molding and then machine them into products. 【Plastics】 Examples of materials used: ABS V0, PC V0, PBT GF15%, PPS CF10% (Some molded materials may require provision by the customer.) Possible size: 250×250×55 *Please note that depending on the material, it may not be possible to create blocks for plastics. Prototype costs will be incurred, but it is also possible to test the feasibility of block molding. 【Rubber】 Available materials: General press-molded materials (Please provide materials.) Possible size: 100×100×50

• Resin processing machine

This is an introduction to deep hole machining (gun drilling). In metals, deep hole machining is often required for cooling water flow paths, air passages such as pneumatic lines, and heater insertion holes. Our company processes deep holes ranging from φ3 to φ30 using gun drilling, providing finished products. Some customers may also request deep hole machining in plastic. Depending on the material and hole size, we may be able to accommodate such requests, so please feel free to consult with us. We have attached a catalog (PDF) with information on hole sizes and machining lengths.

• lathe
• Other processing machines
• Processing Contract

If you have a large quantity of lathe machining, please leave it to us. Our company has NC automatic lathes. We can work with a wide range of plastics, with our main achievements being POM, MC Nylon, and PEEK. Depending on the shape and lot size, switching from NC lathes to automatic lathes can lead to cost reductions. We can process not only simple bush shapes but also shapes that require internal threading and milling, as shown in the photos. Please feel free to consult with us first.

• plastic
• Engineering Plastics
• Processing Contract

This is an introduction to plastic cutting processing using an NC router. We can process plastic sheets up to a maximum size of 1400*2900. In addition to drilling, we can perform milling operations for thickness processing and step processing. Regarding thickness processing, there may be a full-back pull mark, but we can achieve thickness tolerances of around ±0.05. Furthermore, we can process not only large items but also multiple small parts at once, making it cost-effective. Please contact us for more details.

• plastic

This is an introduction to plastic welding for tanks and piping. Welding is performed using resin welding rods. We can accommodate items ranging from small to large. Quality inspections can be conducted depending on the product size, as follows: ■ Liquid tanks... Water leakage test by filling with water. ■ Air tanks... Air leakage test by submerging in water. For more details, please contact us.

• Processing Contract
• plastic
• Contract manufacturing

This is an introduction to lost-wax precision casting. It is a method suitable for reducing costs of complex machined parts with high repeatability, as well as parts assembled from multiple components using screws or welding. Additionally, the ability to cast various materials is one of its attractions. Please feel free to consult us. 【Cost Reduction Examples】 ■ Cost reduction by switching from machining ■ Cost reduction by integrating a three-point structure with screws (eliminating the assembly process) ■ Cost reduction by integrating a five-point structure with welding 【Features of Lost-Wax】 ■ Capable of manufacturing complex shapes, including undercuts. ■ Mass production of three-dimensional curved shapes that are difficult to machine is possible. ■ Handles a wide range of materials including carbon steel, stainless steel, alloy steel, aluminum alloy, and copper alloy. 【What is Lost-Wax Casting?】 Unlike methods such as die casting or sand casting, a wax model is first formed using an aluminum mold. This is then coated with a refractory material, and after curing, it is heated and the wax is removed (lost-wax), creating a cavity in the mold that matches the shape of the wax model, into which metal is poured. Although it is a molded product, it can accommodate both small production runs (from 5 pieces) and larger quantities.

• alloy

This is an introduction to Metal Injection Molding (MIM). It is a method suitable for mass production of complex shapes with product weights of approximately 10g to 20g. (When exceeding 30g, it tends to be more cost-effective to perform additional processing on precision cast products.) The method offers high freedom of shape, allowing for sharp edges, irregular holes, and three-dimensional shapes. We can accommodate quantities starting from several hundred pieces per lot. We specialize in small quantities of diverse products. Please feel free to consult with us. 【Features of Metal Injection Molding (MIM)】 ■ High dimensional accuracy can be achieved. ■ Surface roughness is approximately Rmax 8μm, and it is possible to achieve sub-micron surface roughness with processes like glossy barrel finishing. ■ Heat treatment and surface treatment equivalent to that of melted materials are possible. 【What is Metal Injection Molding (MIM)?】 It is a method that combines the technologies of plastic injection molding and metal powder metallurgy. It achieves mechanical strength close to that of melted materials, which cannot be obtained through powder sintering. Metal powder is injected together with resin to form the shape. After that, solvent debinding is performed, followed by vacuum sintering. At this stage, the product dimensions shrink, requiring expertise and experience.

• stainless

This is an introduction to vacuum forming and pressure forming. For those who are not familiar with vacuum forming, most thin plastic trays are made using this method. Common examples include egg cartons. In pressure forming, where compressed air is used, thicker plastics can be utilized, allowing for the production of product covers and trays. **Advantages of Vacuum and Pressure Forming** - The molds are less expensive compared to other plastic forming methods (pressure forming tends to be more expensive than vacuum forming). - The production time for molds is shorter compared to other plastic forming methods. - It is suitable for small-scale production. - It can create thin-walled shapes (1-6 mm) and large products with wide surface areas. **Disadvantages of Vacuum and Pressure Forming** - There can be variations in thickness and precision, and partial thickness changes are not possible. - There is a significant amount of material waste. - Post-processing is essential. - It is not possible to create integrated shapes such as bosses or ribs. If you would like to convert covers made from sheet metal into resin or have questions about what shapes can be created, please feel free to contact us. We will provide proposals tailored to your needs.

• plastic
• Contract manufacturing

Introducing extrusion blow molding (direct blow molding). What kind of molding method is extrusion blow molding, and what can be made with it? Everyday items you encounter, such as detergent bottles found in supermarkets, are made using extrusion blow molding. With extrusion blow molding, containers with handles can also be formed without secondary processing. If you are considering the production of hollow products like tanks or bottles, or if you have concerns about production methods, please feel free to contact us. 【What is extrusion blow molding?】 Extrusion blow molding is a hot parison method where melted resin is extruded into a cylindrical shape (commonly known as a parison) and air is directly blown into it before it cools, which is also referred to as direct blow molding. Typically, air is blown in from the top, but there are also methods that blow air from the sides or bottom. It is a historically old molding method that is used in various fields, including food containers, oil tanks, and automotive parts.

• plastic

This is an introduction to thermosetting plastic molding. If you have a source for thermoplastic requests but are looking for a source for thermosetting plastic, or if you are seeking advice for the first time, please feel free to consult with us. Our company is capable of handling various molding methods for thermosetting plastics as follows: 【Molding Methods】 ■ Compression Molding ■ Transfer Molding ■ Injection Molding ■ Epoxy Casting, Vacuum Epoxy Casting ■ Insert Molding Below are representative materials. 【Materials】 ■ Epoxy ■ Melamine ■ Phenolic ■ Urea ■ Unsaturated Polyester ■ Diallyl Phthalate Please consult with us first. 【What is Thermosetting Plastic?】 There are two types of plastics: thermosetting and thermoplastic. As the name suggests, thermosetting refers to materials that harden when heat is applied. Conversely, thermoplastic becomes soft when heat is applied and solidifies when cooled. A common analogy is that thermosetting is like cookies, while thermoplastic is like chocolate.

• Engineering Plastics

Introduction to Foam Injection Molding and SF Molding. Foam injection molding and SF molding involve molding resin pellets with a chemical foaming agent. A skin layer is formed on the surface, while a foamed layer is created in the core section. Since the inner layer is foamed, it allows for weight reduction. Additionally, the injection pressure can be lowered compared to conventional injection molding, which minimizes deformation and sink marks despite the thick walls. **Benefits of Foam Injection Molding and SF Molding** - Capable of molding large and complex shapes. - Achieves weight reduction despite thick walls. - Reduces sink marks, warping, and distortion compared to conventional molded products. - Compatible with a wide range of thermoplastic resins. **Product Examples** - ATM covers. - Bases for analytical instruments (replacement from metal). - Top covers for analytical instruments (integration of components). - Cost reduction and weight reduction from metal covers. - Cost reduction and weight reduction from die-cast products.

• plastic
• Contract manufacturing

Emblems on medical devices, such as manufacturer names and model names, may use three-dimensional, thick designs to convey a sense of luxury and presence. However, have you noticed that this thickness can actually become a nuisance in medical settings? When disinfecting equipment daily, alcohol wipes can get caught, causing stress. The three-dimensional (appearing) printing introduced here is flat, which can alleviate this stress.

• Inspection robot

Not only do we deliver parts, but we can also provide combinations of various parts according to our customers' requests. Please feel free to contact us when you need assistance. 【Combination Examples】 - Rubber lining for rollers and other components, resin lining - Rubber lining for large pipes - Lining for electrical insulation and noise reduction - Clamp parts to prevent scratches on counterpart components We can deliver finished products, including metal components. Please feel free to contact us.

• Assembly Jig

Our company, with a network cultivated over 60 years, is capable of not only delivering parts but also providing assembly and delivery of various components according to customer requests. We can procure not only resins and rubbers processed in-house but also metals and general items. Additionally, we can assemble and deliver these components. Please feel free to contact us when you need assistance. [Examples] ■ Production of jigs used in various processes ■ Assembly from small quantities to mass production, including prototypes ■ Plating on molded products, etc. *For more details, please refer to the PDF materials or feel free to contact us.

• Assembly Jig

We can accommodate everything from prototypes starting from one piece to mass production of 100 pieces or more. 【Ceramics Processing】 Ceramics are very hard materials. To minimize processing, we start from sintering the material, working from shapes or diameters that are as close as possible. Therefore, the lead time can take some time, typically around 4 to 6 weeks. To respond to urgent requests, we have certain types of materials in stock that can help shorten the time from material sintering, depending on the size. We are open to consultations based on your usage situation. 【Glass Processing】 We can also handle tasks such as applying anti-shatter film. Please feel free to contact us.

• Ceramics

Our company also handles various manufacturer standard products. We offer solutions for electrical equipment, such as shield sheets and heat dissipation sheets, as well as "O-rings" and "rubber feet," which are examples of "rubber standard products." Additionally, we handle a variety of manufacturer standard products, including "tubes and hoses," "safety and hygiene materials," and "packaging and packing materials." Furthermore, based on standard products, we also provide customized products through secondary processing or additional work to meet customer requests at our factory. 【Products We Handle (Partial List)】 ■ EMC countermeasure-related ■ Heat countermeasure-related ■ Noise control-related ■ Cable accessories ■ Tubes ■ Hoses and piping ducts ■ Belts ■ Rubber standard products ■ Various electrical and electronic components For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract
• EMC countermeasure products
• Ferrite Core

Our company is a sommelier of technology and information in "monozukuri" (manufacturing). Daiichi Shoko provides a wide variety of products and services related to "monozukuri," utilizing our own manufacturing facilities as a core, and employing plastics, metals, rubber, films, sponges, inorganic materials, and their composites. You can leave everything from material selection to processing technology proposals and quality assurance to Daiichi Shoko, allowing you to effectively utilize the time you previously spent on research and procurement. We match you with partner companies that have strengths suitable for your challenges. We will propose multiple partner companies that meet your requirements and conditions, including processing technology information, costs, and delivery times. Please feel free to consult us when needed. [Business Content] ■ Contract processing and sales of various industrial processing parts (resin, metal, rubber, inorganic, etc.) ■ Provision of related materials, processing technology information, and services ■ Sales of general industrial and commercial materials ◎ ISO 9001 Certification, ISO 14001 Certification *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract
• plastic
• Rubber

We would like to introduce the machinery and equipment owned by Daiichi Shoko Co., Ltd. Our manufacturing division, Daiichi Chemical Co., Ltd., specializes in precision plastic machining and film and rubber punching as core technologies, and has established a system capable of responding to a wide variety of small lot and short delivery time production. With the accumulated know-how and teamwork among the manufacturing, sales, and quality control departments, we will reliably meet our customers' needs. 【Main Equipment Owned】 ■ Machining Center: MB-66VA and 3 other units ■ Robo Drill: -T14iFa ■ NC Lathe: NEXUS150-II and 2 other units ■ NC Compound Lathe: LB3000EXII and 1 other unit ■ NC Automatic Lathe: L32-1M10 ■ General-purpose Lathe: MS-850G, YAM-1500G ■ NC Router: NCN8200C and 2 other units ■ NC Continuous Punching Machine: SCP865BN and 3 other units ■ Continuous Automatic Cutting Machine: PE2-600 and 2 other units ■ Water Cutter (Water Jet) ■ Cutting Plotter ■ Cutting Machine ■ Measuring Microscope: MF-B2010D ■ Image Dimension Measuring Instrument: IM-8000 ■ Handheld Probe 3D Measuring Instrument: XM-C1000 and others

• Processing Contract
• plastic
• Rubber

In our company, to deliver "peace of mind" along with the necessary products, we conduct quality checks on all products shipped, regardless of whether they are manufactured in-house or by partner companies. Additionally, we have established a specialized department for quality and environmental management to support our partner companies in their efforts to ensure and improve quality in both products and manufacturing processes. Dedicated personnel also handle investigations and countermeasures for complaints and issues, as well as environmental assessments such as RoHS and REACH. 【Quality and Environmental Management System】 ■ Management system compliant with ISO9001 and ISO14001 standards ■ Incoming inspections ■ Process inspections to shipping inspections ■ Environmental assessments *For more details, please refer to the PDF materials or feel free to contact us.

• Processing Contract
• plastic
• Rubber