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As basic knowledge about plastics, we will introduce the recycling of "PS." The PS code from the Society of the Plastics Industry in the United States is number 6. Common applications for recycling include hangers and picture frames. Our company conducts domestic closed-loop recycling in Japan, including crushing, producing recycled pellets, and manufacturing products. If you have any requests or concerns regarding plastic recycling and product manufacturing, please feel free to contact us. [Overview] - The PS code from the Society of the Plastics Industry in the United States is number 6. - Expanded polystyrene is often melted down with heat to reduce its volume into a mass called an ingot, which is then crushed and pelletized. - Common applications for PS recycling include hangers and picture frames. *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

As basic knowledge of plastics, we will introduce the uses of "PS." "PS foam" is used for insulation purposes in building material boards, cup noodle containers, and fish boxes. Its extremely lightweight and high rigidity make it suitable for containers for bento and side dishes in supermarkets and convenience stores, as well as for cushioning materials and tatami core materials. Additionally, "SPS" is crystalline, exhibiting excellent heat resistance and chemical resistance, and its lightweight nature makes it suitable for use in electrical components of hybrid cars, home appliances, and tableware. [Applications of PS Foam] - Used for insulation in building material boards, cup noodle containers, and fish boxes. - Its extremely lightweight and high rigidity are utilized in containers for bento and side dishes in supermarkets and convenience stores, as well as in food trays, cushioning materials, and tatami core materials. *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

We will introduce the uses of "PS" as basic knowledge about plastics. "GPPS" is utilized for its transparency and high rigidity in household appliance parts such as the interior components of electric refrigerators, CD cases, letter case trays, and the bodies of ballpoint pens. Recently, it has also been used in diffusion plates and light guide plates for LCD display panels. Additionally, "HIPS" excels in the balance of impact resistance and rigidity, and is widely used as housing materials and internal components for home appliances and office automation equipment. 【Uses of GPPS】 - Utilized for its transparency and high rigidity in household appliance parts such as the interior components of electric refrigerators, CD cases, letter case trays, and the bodies of ballpoint pens. - Recently used in diffusion plates and light guide plates for LCD display panels. - BOPS sheets, which have enhanced strength through stretching processing, are widely used as lid materials for bento boxes and side dishes in supermarkets and convenience stores. - Furthermore, thinner films processed from it are used for the address portion of envelopes. *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

As basic knowledge of plastics, we will introduce the advantages and disadvantages of "PS." The advantages include excellent light transmittance and high transparency, superior dimensional stability during molding, ease of coloring, and being tasteless and odorless. On the other hand, the disadvantages include low heat resistance, impact resistance, and oil resistance. 【Advantages】 ■ Excellent light transmittance and high transparency ■ High lightweight properties ■ High electrical insulation and thermal stability during melting ■ Superior dimensional stability during molding ■ Easy to color, tasteless and odorless ■ Excellent weather resistance *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

Here is an introduction to the characteristics of "PS" as basic knowledge about plastics. "PS" is said to be suitable for inexpensive and bulk consumer goods. You might associate it with Styrofoam, but its specific gravity is lighter than that of polypropylene (PP) and polyethylene (PE) among plastic materials. Additionally, because it does not conduct electricity, it can be used as an exterior material for electrical products and as insulating components without special treatment. It is tasteless and odorless, making it suitable for food packaging materials. 【Characteristics】 ■ Contains a benzene structure and is amorphous, offering excellent transparency and rigidity. ■ Relatively stable to heat and has excellent dimensional stability during molding, making it easy to process. ■ Suitable for inexpensive and bulk consumer goods. ■ Tasteless and odorless, making it suitable for food packaging materials. *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

We would like to introduce "PS" as a basic knowledge of plastics. "PS" is a plastic resin made by polymerizing styrene monomer, which is derived from crude oil and naphtha (raw gasoline, straight-run gasoline). Broadly speaking, there are two types: general-purpose polystyrene, which is highly transparent and hard, and impact-resistant polystyrene, which is milky white and has improved impact resistance by adding rubber components. In addition, there is syndiotactic polystyrene, which is crystalline and opaque but has excellent heat resistance. 【Features】 ■ General-purpose polystyrene (GPPS): Highly transparent and hard ■ Impact-resistant polystyrene (HIPS): Improved impact resistance by adding rubber components ■ Syndiotactic polystyrene (SPS): Excellent heat resistance *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

"Bio PE" is a non-biodegradable plastic made entirely from biomass raw materials. The biomass raw material is sugarcane. It is said to have almost the same performance as regular polyethylene and can reduce carbon dioxide emissions by up to 70% compared to regular polyethylene. Currently, it is used as a material for shopping bags, and demand is expected to increase further in the future. 【Features】 ■ Non-biodegradable ■ Fully biomass raw material plastic ■ Performance is almost the same as regular polyethylene ■ Used as a material for shopping bags *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

As basic knowledge about plastics, we will introduce the recycling of 'PE'. Commonly recycled items include garbage bag films and buckets. The HDPE code from the American Plastics Industry Association is 2, and the LDPE code is 4 (UHPE is included in other category 7). Additionally, a method of identification is that it softens quickly when exposed to fire, drips while burning, and has a candle-like smell (plastics are made from petroleum and are highly flammable and dangerous; please conduct any identification methods at your own risk). 【American Plastics Industry Association Codes】 ■HDPE: 2 ■LDPE: 4 ■UHPE: 7 *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

As basic knowledge of plastics, we will introduce the uses of "PE." One of the most common uses is "film." Many of the various films around us are made with "PE." "LDPE" is used in processed paper for detergent containers and waterproof paper bags. "HDPE" is used for chemical storage bottles and kerosene cans, while "ultra-high molecular weight PE" is used in gears and sprockets. 【Uses (partial)】 <Low-Density Polyethylene (LDPE)> ■ Stretch film, food packaging, pharmaceutical packaging, agricultural use, cosmetic packaging, etc. ■ Processed paper for milk cartons, detergent containers, waterproof paper bags, etc. ■ Wire insulation for high-voltage power lines, telephone lines, communication cables, etc. ■ Hose pipes ■ Soft small bottles, mayonnaise containers, cosmetic containers *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

We will introduce the advantages and disadvantages of 'PE' as basic knowledge of plastics. The advantages include excellent mechanical strength, chemical resistance, and weather resistance, as well as low raw material costs and ease of processing. The disadvantages are that it has low heat resistance, making it vulnerable to fire and heat, and due to its poor adhesion properties, care must be taken when painting or printing. [Advantages] - Low raw material costs and ease of processing - Excellent mechanical strength - Particularly excellent mechanical strength at low temperatures - Excellent chemical resistance - Excellent weather resistance - High waterproofing due to almost no water absorption *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

Here is an introduction to the characteristics of "PE" as basic knowledge about plastics. "PE" has a specific gravity of 0.95, making it lightweight. It has low water absorption and excellent dimensional stability. Additionally, it has good chemical resistance and impact resistance. Compared to other synthetic resins, it is a "soft" and "impact-resistant" resin. 【Properties (partial)】 <LDPE> ■ Specific gravity: 0.92 ■ Tensile strength (MPa): 20 ■ Elongation at break (%): 600 ■ Izod impact strength (J/m): does not break *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

We will introduce "PE" as a basic knowledge of plastics. "PE" stands for polyethylene, which is obtained by polymerizing ethylene and has a "simple" structure among polymers. It is "produced in large quantities" among plastics. Furthermore, even though the composition is the same "PE," the properties can vary greatly due to structural differences, allowing for classification into several types based on manufacturing methods and density. [Typical Classifications] ■ Low-Density Polyethylene (LDPE) ■ High-Density Polyethylene (HDPE) ■ Ultra-High Molecular Weight Polyethylene (UHPE) *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

We will introduce the recycling of PP as basic knowledge about plastics. The code for PP from the Society of the Plastics Industry in the United States is number 5. Additionally, commonly recycled applications include plastic pallets, rainwater retention systems, building materials, and miscellaneous goods. If you have any requests or concerns regarding plastic recycling and product development, please feel free to contact us. 【Examples of Recycling Applications】 ■ Plastic Pallets ■ Rainwater Retention Systems ■ Building Materials ■ Miscellaneous Goods *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

PP is classified into three types in the form of copolymerization with comonomers (primarily ethylene). The "homopolymer" has a high melting point and excellent heat resistance and heat water resistance; the "random polymer" has a low melting point and low rigidity, with excellent transparency and surface gloss; the "block polymer" excels in low-temperature impact strength and has a good balance of rigidity and impact resistance. If you have any requests or concerns regarding the recycling and commercialization of plastics, please feel free to contact us. 【Features】 <Homopolymer> ■ High melting point ■ Excellent heat resistance and heat water resistance ■ Poor cold resistance ■ Low impact strength ■ Melting point: 160–165℃ *For more details, please refer to the PDF materials or feel free to contact us.

• Other resource recycling

PP is the lightest in specific gravity among resins, has extremely high processability, and possesses excellent strength, making it suitable for a wide range of applications such as food containers, food packaging, and foam cushioning materials. In terms of appearance, it has high transparency and excellent colorability, which leads to its partial use in product design to express design concepts. If you have any requests or concerns regarding plastic recycling and product development, please feel free to contact us. 【Applications】 ■ Food containers, microwave-safe containers, Tupperware ■ Food packaging, films, and bags ■ Foam cushioning materials ■ Exterior parts of electronic products and automotive parts, bumpers ■ Cable sheathing *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

Here is an introduction to the advantages and disadvantages of PP as basic knowledge about plastics. Due to its specific gravity being lower than 1, it has a lightweight property that allows it to float on water. It is also less affected by chemicals, making it widely used in scientific instruments and medical devices. However, it generally has disadvantages such as being weak against ultraviolet rays, and it turns white when exposed to sunlight, making it unsuitable for outdoor use. However, improvements can be expected by adding additives such as antioxidants. 【Advantages】 ■ Lightweight ■ Heat resistance ■ Chemical resistance ■ Excellent mechanical strength ■ Can be mass-produced at low cost *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

Here is an introduction to the characteristics of PP as basic knowledge of plastics. Being a thermoplastic resin, it deforms when heat is applied. Additionally, it is a material that tends to warp easily, so it is necessary to design products in shapes that are less prone to warping. However, it excels in chemical resistance, abrasion resistance, impact resistance, and lightweight properties, making it durable and resistant to scratches. As a result, it is widely used in various fields such as automotive parts, food containers, and medical devices. [Characteristics] - Has a specific gravity of 0.9, making it the lightest among general-purpose plastics - Excellent in chemical resistance, abrasion resistance, impact resistance, and lightweight properties - Durable and resistant to scratches - Can be mass-produced at low cost - Also used in household goods, miscellaneous items, and packaging materials *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

PP, read as polypropylene, is a polymer made of carbon and hydrogen. It is a crystalline polymer compound (plastic) with a regular arrangement of propylene (gas), and it is the lightest among plastics, commonly used in everyday items. It is a type of thermoplastic resin that has plasticity (it can be deformed when force is applied, and does not return to its original shape when the force is removed) when heat is applied. 【Features】 ■ A type of material referred to as "general-purpose resin" ■ The second highest production volume among synthetic resins ■ A crystalline polymer compound with a regular arrangement of propylene ■ The lightest plastic, with a specific gravity of 0.9 ■ Commonly used in everyday items ■ A type of thermoplastic resin *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

Our company actively engages in the 'Material Recycling' business, purchasing plastic resources such as resins (films, molded products, and crushed materials) emitted by our customers and turning them into new recycled materials. With our unique know-how and systems, as well as a nationwide network and sales routes, we achieve reliable and stable collection and purchasing. We have earned high trust and confidence from our customers. 【Features】 ■ Achieving reliable and stable collection and purchasing ■ Providing various solutions and services ■ Establishing a unique system - Collection of plastics - Resource recovery - Matching business services *For more details, please refer to the PDF materials or feel free to contact us.

• Collection and transportation

Our company actively engages in the "Material Recycling" business, purchasing plastic resources such as resin emitted from customers (stretch film, plastic bags, molded products, and crushed materials) and turning them into new recycled materials. With our unique know-how and systems, as well as a nationwide network and sales routes, we achieve reliable and stable collection and purchasing. We have earned high trust and confidence from our customers. 【Features】 ■ Achieving reliable and stable collection and purchasing ■ Providing various solutions and services ■ Establishing a unique system - Collection of plastics - Resource recovery - Matching business services *For more details, please refer to the PDF materials or feel free to contact us.

• Collection and transportation

At Seiko International, we are committed to initiatives that consider the global environment. We collect waste plastics, films, and resin scraps that would normally be discarded as garbage and process them into pellet form. We aim to increase the amount of recyclable plastics and contribute to solving marine pollution issues. Additionally, our company conducts cleaning activities every month, contributing to the community while ensuring that all employees thoroughly understand environmental conservation. 【Initiatives (partial)】 <Recycling of Waste Plastics> ■ Collect waste plastics, films, and resin scraps and process them into pellet form ■ The pellets can be reused as new products *For more details, please refer to the PDF document or feel free to contact us.

• Other resource recycling

We would like to introduce our "Productization (Re-pelletizing and Compounding)." At our Kanto No. 1 Plant and Chiba Products Center, collected plastics are sorted by type and quality through a selection process. We manufacture pellets suited to each characteristic and sell them as high-quality recycled raw materials to customers and manufacturers both domestically and internationally. 【Features】 ■ Establishment of in-house production of recycled products (recycled pellets) ■ Sorting of collected plastics by type and quality through a selection process ■ Manufacturing pellets suited to each characteristic ■ Selling as high-quality recycled raw materials to customers and manufacturers both domestically and internationally *For more details, please refer to the PDF document or feel free to contact us.

• Collection and transportation

Introducing our Kanto No. 1 Plant (recycled pellets and compound business). We have a total of 9 lines: 7 single-screw extruders and 2 twin-screw extruders. We conduct contract production of recycled pellets and compounds from resins such as PC, PS, PP, PE, PC/ABS, PPS, AS, PBT, ABS, PMMA, PA, POM, etc., as well as physical property measurements, crushing, and grinding. 【Production Equipment】 ■ Twin-screw extruders Strand cut / 2 units ■ Single-screw extruders Strand cut / 6 units ■ Single-screw extruder Hot cut / 1 unit ■ Silo blender / 6 units ■ Grinder / 1 unit ■ Crusher / 1 unit *For more details, please refer to the PDF document or feel free to contact us.

• Collection and transportation

We would like to introduce our "Matching Business." As part of our customers' efforts to create a circular economy and achieve zero emissions, we propose solutions from various angles to address challenges that customers cannot resolve on their own, as well as issues faced by other companies in the same industry. Through a mutually beneficial matching process with our company, we aim to establish a balanced coexistence and mutual prosperity. [Customer Feedback] ■ Satisfied with the product knowledge of the sales representative ■ Receiving effective proposals and advice from the sales representative ■ Quick responses to inquiries ■ Satisfied with the response during emergencies *For more details, please refer to the PDF document or feel free to contact us.

• Collection and transportation

Our company is actively engaged in the "Material Recycling" business, where we purchase plastic resources such as resin (films, molded products, and crushed materials) emitted by our customers and convert them into new recycled materials. Through our unique know-how and systems, as well as our nationwide network and sales routes, we achieve reliable and stable collection and purchasing. We have earned high trust and confidence from our customers. 【Features】 ■ Achieving reliable and stable collection and purchasing ■ Providing various solutions and services ■ Establishing a unique system - Collection of plastics - Resource recovery - Matching business services *For more details, please refer to the PDF materials or feel free to contact us.

• Collection and transportation

Seiko International has established a unique recycling system that not only purchases and collects waste plastics but also aims for resource recovery, transforming them into products needed by customers. This is also ideal for establishing an eco-brand and enhancing corporate image. 【Results of Implementation in Airlines】 ■ Waste disposal costs have been reduced, turning into revenue through sales. ■ Achieved efficiency in operations based on waste disposal laws. ■ Established an eco-brand and improved corporate image. *For more details, please request materials or view the PDF data from the download.

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We responsibly recycle at our own factory and also ensure traceability.

• others