ナイカイ企業 Product Lineup

Our company, engaged in the bag manufacturing industry, produces a variety of bag products such as large paper bags for heavy packaging, small square-bottom paper bags, and resin cross bags. In terms of paper and resin bags, we have improved both shipping speed and capacity through computer management. We respond to needs with a wide range of variations, so please feel free to consult us with your requests. 【Main Products】 ■ Large paper bags for heavy packaging ■ Small square-bottom paper bags ■ Resin cross bags ■ Cross containers ■ Combine bags ■ Polyethylene bags *Container bags are commonly referred to as "Furecon," but officially they are called Flexible Container Bags or FIBCs (Flexible Intermediate Bulk Containers). *For more details, please download the PDF or feel free to contact us.

At Naikai Corporation, we listen to our users' voices to ensure safe usage, strive for harmony between machines and people, and apply thorough quality management to our product development. We conduct confirmation and management of the characteristics, strength, and quality of the materials used, as well as the strength, durability, and finish of the products. 【Quality Management Overview】 ■ Tear Strength Testing Machine ■ Drop Testing Machine ■ Tensile Property Testing ■ Slip Angle Testing ■ Flexible Container Lifting Testing Machine ■ Environmental Testing *For more details, please refer to the PDF document or feel free to contact us.

Printing also enhances the user's trust in the product. As the face of the product and containing advertising elements, printing inevitably requires advanced technology. In other words, printing can be said to be a key point in creating the overall image of the product. With our total technology, we respond to the demands of the times. *For more details, please refer to the PDF materials or feel free to contact us.

Naikai Corporation has a wide variety of equipment and continues to produce various high-quality products using automation systems. [Owned Machines] ■ Metal detectors (installed on all sewing machines) *For more details, please refer to the PDF document or feel free to contact us.

We want to deliver high-quality products directly to our customers. Naikai Corporation manages products using computer systems, ensuring first-in, first-out handling to protect the products during delivery. Thanks to computer management, both shipping speed and capacity are improved. *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the "entire folding and sealing equipment" of Naikai Corporation. We have the "Easy Open Bag Folding and Sealing Machine," which can be easily opened by simply pulling the cut tape, preventing foreign matter contamination during opening, and the "Fully Automatic Bottom Sealing Machine," which is excellent in confidentiality and workability due to computer control. 【Equipment Owned】 ■ Easy Open Bag Folding and Sealing Machine ■ Fully Automatic Bottom Sealing Machine ■ Pinch Back Folding and Sealing Machine *For more details, please refer to the PDF document or feel free to contact us.

We offer no-contamination level container bags that meet the requirements for optical resin. If you need a container that can be used with peace of mind regarding foreign substances, or if you want to improve loading efficiency since it will be stacked in a container, we provide products that meet all these needs with our years of experience, equipment, and technology. The shape, weight, and various specifications will be designed based on your requests. 【Features】 ■ No-contamination level ■ Meets the requirements for optical resin ■ Increases filling efficiency with standard rectangular containers ■ Shape, weight, and various specifications designed based on customer requests *For more details, please feel free to contact us.

We offer no-contamination level container bags to safely deliver food materials. We provide products that meet all these needs, such as preventing external contaminants during transportation and allowing for safe filling directly at the factory, backed by years of experience and our facilities and technology. The shape, weight, and various specifications will be designed based on your requirements. 【Features】 ■ For food use ■ No contamination level ■ Shape, weight, and various specifications designed based on customer requests *For more details, please feel free to contact us.

Our company offers no-contamination level container bags that meet the standards for filling pharmaceuticals. We provide products that meet all these needs, such as the desire for containers that can be used safely without foreign substances and the lack of pharmaceutical-grade container manufacturers for imported goods, all backed by our years of experience, equipment, and technology. The shape, weight, and various specifications will be designed based on your requirements. 【Features】 ■ No contamination level ■ Meets the standards for filling pharmaceuticals ■ Shape, weight, and various specifications designed based on customer requirements *For more details, please feel free to contact us.

The "TYPE-C Container Bag" removes static electricity from the ground to prevent dust explosions. It dissipates static electricity generated during filling and discharging, reducing the risk of dust explosions and electric shock to operators. The shape, weight, and various specifications will be designed based on customer requests. 【Features】 ■ Removes static electricity from the ground ■ Reduces dust explosions and electric shock to operators ■ Re-inspected at our own factory before delivery ■ Shape, weight, and various specifications are designed according to customer requests *For more details, please feel free to contact us.

At Naikai Corporation, we handle "large paper bags for heavy packaging." We offer a variety of paper bags suitable for various industries and contents, including "single-seam stitched bags" for use with resins, food, feed, and more. We respond to your needs with a wide range of variations, so please feel free to consult us when you have requests. 【Features】 ■ Handling various types of paper bags ■ Providing paper bags suitable for a wide range of industries and contents ■ Responding to needs with a rich variety of options *For more details, please feel free to contact us.

The "Single Sewing Poly Insert Type" is a general paper bag with one side sewn by a sewing machine. It is produced simultaneously (the lengths of the craft and poly are the same). By inserting a poly bag, it is possible to enhance moisture resistance. Additionally, there are removable types and sewing-in types for hand-inserted bottom seal products. 【Features】 ■ A general paper bag with one side sewn by a sewing machine ■ Simultaneous production (the lengths of the craft and poly are the same) ■ It is possible to enhance moisture resistance by inserting a poly bag *For more details, please feel free to contact us.

The "Overtape Bag" is a paper bag sealed with overtape. It is also possible to add a gusset, and we have a track record of containing items such as pharmaceuticals and chemicals. Our company manufactures various bag products, including large paper bags for heavy packaging, small square-bottom paper bags, and resin cross bags. Please feel free to consult us if you have any requests. 【Features】 ■ Paper bag sealed with overtape ■ Gusset can be added ■ Contents: Proven track record with pharmaceuticals and chemicals *For more details, please feel free to contact us.

Container bags (also known as container backs) are commonly referred to as FIBC (Flexible Intermediate Bulk Containers) in short. In this document, we introduce the "requirements for transportation" and "requirements to accommodate the contents" for pharmaceutical chemical products, optical resins, food ingredients, and how these are addressed. [Contents (excerpt)] - Requirements for containers used for pharmaceutical materials - Requirements for containers used for optical and electronic material resins - Requirements for food containers - Production bases for high-quality containers, etc. *For more details, please refer to the PDF document or feel free to contact us.

Container bags are commonly referred to as "frecon," but officially, they are called flexible intermediate bulk containers or FIBCs (FLEXIBLE INTERMEDIATE BULK CONTAINERS). What are the requirements for transporting pharmaceutical intermediate raw materials using container bags and similar methods? This document outlines the response of Naikai Corporation, which delivers pharmaceutical chemical products and optical resins in high-quality packaging, to the use of containers for pharmaceutical materials. It introduces methods and measures for confirming the presence of organic substances that may affect biological reactions and environmental substances that could influence genetic reactions. [Examples of Responses (Excerpt)] ■ Limitations on raw resin and additives for outer bags ■ Visible foreign substances generated during the manufacturing process of outer bags are thoroughly removed during the inspection process ■ Conduct leaching tests on inner bag materials at inspection agencies in Japan ■ Prevent secondary adhesion of foreign substances during inspections by wearing anti-static coveralls, masks, goggles, etc. *For more details, please refer to the PDF document or feel free to contact us.

Container bags are commonly referred to as "Furecon" for short, but officially, they are called Flexible Intermediate Bulk Containers (FIBCs). What are the requirements to accommodate contents such as optical resins and electronic materials resin raw materials? This document presents the measures taken by Naikai Corporation to deliver high-quality packaging for pharmaceutical chemicals, optical resins, food raw materials, and more, specifically for containers used for optical and electronic materials resins. We introduce our countermeasures against micron-level foreign matter contamination that can affect pickup, as well as contamination from metal powders. [Examples of Measures (Excerpt)] ■ Limiting raw resin and additives for the outer bag ■ Researching and selecting inner bag materials with minimal additives, preferably additive-free grades ■ Workers wear anti-static coveralls to prevent secondary attachment of foreign matter during inspections ■ Visible foreign matter generated during the manufacturing process of the outer bag is thoroughly removed during the inspection process *For more details, please refer to the PDF document or feel free to contact us.

Container bags are commonly referred to as "Furekon" for short, but officially, they are called Flexible Intermediate Bulk Containers (FIBCs). What are the requirements when transporting food ingredients using container bags and similar methods? This document outlines the measures taken by Naikai Corporation to deliver packaging for pharmaceutical chemicals, optical resins, and food ingredients in a high-quality manner, specifically regarding food containers. It introduces safety measures for materials that come into contact with the contents, as well as strategies to prevent the adhesion of hair, bacteria, and other contaminants. 【Examples of Measures (Excerpt)】 - Limit raw resin and additives for the outer bag - Encourage handwashing before entering the product inspection room and inner bag inspection room - Select resin raw materials for the inner bag that meet the standards of the Food Sanitation Act - Visibly detectable foreign substances generated during the manufacturing process of the outer bag are thoroughly removed during the inspection process *For more details, please refer to the PDF document or feel free to contact us.

What are the requirements to address the contents such as optical resins and electronic materials resin raw materials? This document introduces common challenges and solutions for various contents of container bags, including pharmaceutical chemical products, optical resins, and food raw materials. 【Do you have any concerns when transporting resins?】 ■ Micron-level foreign matter contamination that can affect pickup... ■ Contamination from metals generated during raw material production or metal substances inside inner bags... ⇒ Solutions are available! *For specific countermeasure methods, please refer to the PDF document or feel free to contact us.

The "Domestic Cross Container" is of high quality and can accommodate small lot production, allowing us to deliver products that meet our customers' wishes. Produced in domestic factories using domestic materials, our quality and performance are guaranteed. Additionally, domestic materials are available in a wide variety of "colors" and "materials" to meet diverse requests. Please feel free to consult us when placing an order. 【Features】 ■ Reliable quality ■ Abundance of materials that can produce a variety of products and a system that allows for small lot production ■ Over 30 years of experience in producing a wide range of products ■ Domestic materials are available in a rich variety of "colors" and "materials" to meet diverse requests *For more details, please refer to the PDF document or feel free to contact us.

The "Easy Open Aluminum Craft Overlaminate Bag" is a craft paper bag that enhances moisture resistance and light-blocking properties through its multi-layer structure. The surface is non-slip, preventing load collapse. Furthermore, it can be easily opened by simply pulling the tape sideways. It is sealed using heat sealing without sewing threads, preventing the contamination of thread debris. 【Features】 - The outer bag is laminated with LDPE for waterproofing. - The inner layer uses LLDPE to improve moisture resistance and sealing properties. - The aluminum layer provides high moisture resistance, preventing the absorption of powders and other materials. - No abnormalities were found after 10 drops in horizontal drop tests from a height of 70 cm. - Gas barrier properties and further strength enhancements can be added upon request. *For more details about the product, please refer to the materials available for download in PDF format. We are also providing materials that introduce examples of solving challenges when using craft paper bags and container bags.

We would like to introduce our "Aluminum Inner Layer Bags." They suppress moisture absorption and protect the quality of the products. We have two types of raw materials, domestic and overseas, allowing us to meet quality and price demands. By preventing the passage of water vapor and oxygen, they effectively protect the contents. Aluminum also blocks ultraviolet rays. 【Features】 ■ High barrier properties - Moisture resistance - Ultraviolet resistance - Gas resistance *For more details, please download the PDF or feel free to contact us.

In the food industry, maintaining product quality and providing safe food to consumers is crucial, making freshness preservation very important. In particular, moisture, oxygen, and ultraviolet light are factors that accelerate food deterioration. Aluminum inner layer bags protect food from these external factors and maintain quality. These bags prevent moisture absorption and do not allow water vapor and oxygen to pass through, effectively safeguarding the contents. Additionally, they block ultraviolet light, preventing discoloration and flavor degradation of the food. 【Usage Scenarios】 - Packaging for dried foods such as snacks, seaweed, and tea - Packaging for seasonings and spices 【Benefits of Implementation】 - Extension of food shelf life - Preservation of food quality - Increased customer satisfaction

In the pharmaceutical industry, light protection measures are essential for maintaining product quality. In particular, preventing the degradation of ingredients due to light is required. Aluminum inner layer bags protect pharmaceuticals from ultraviolet rays and maintain product quality. 【Usage Scenarios】 - Packaging for pharmaceuticals such as tablets, capsules, and powders - Storage of pharmaceutical intermediates that need protection from light degradation 【Benefits of Implementation】 - Preservation of product quality - Long-term storage of products - Gaining trust from customers

In the cosmetics industry, maintaining the quality of fragrance is important. Fragrances are easily affected by light, oxygen, and moisture, which can lead to quality degradation and changes in scent. Aluminum inner layer bags are considered necessary to protect products from these external factors and enhance the longevity of the fragrance. 【Usage Scenarios】 * Perfume ingredients * Fragrance products 【Benefits of Implementation】 * Suppression of fragrance degradation * Preservation of product quality * Improvement of customer satisfaction

In the chemical industry, moisture control is crucial for maintaining product quality. This is especially true for products that are prone to quality degradation due to humidity, where appropriate moisture-proof measures are essential. Aluminum inner layer bags prevent moisture absorption and maintain product quality. 【Usage Scenarios】 - Storage of powdered chemicals - Storage of reagents and pharmaceuticals - Transportation of moisture-sensitive chemical products 【Benefits of Implementation】 - Suppression of product quality degradation - Extension of product storage period - Increased reliability from customers

In the pet food industry, it is important to protect the contents from oxidation and moisture in order to maintain product quality. In particular, pet foods that contain a lot of fats face challenges such as flavor deterioration and a decrease in nutritional value due to oxidation. Aluminum inner layer bags block water vapor and oxygen, effectively protecting the contents. This allows for the long-term preservation of pet food quality and provides consumers with safe products. 【Usage Scenarios】 - Packaging for pet food and its ingredients - Storage of easily oxidizable raw materials - Long-term storage 【Benefits of Implementation】 - Preservation of product quality - Extension of shelf life - Improvement of customer satisfaction

In the seed industry, it is important to maintain the germination rate of stored seeds. In particular, moisture and ultraviolet light are major factors that accelerate seed deterioration and reduce germination ability. Aluminum inner-layer bags protect seeds from these external factors and contribute to maintaining the germination rate. 【Usage Scenarios】 - Long-term storage of seeds - Quality preservation during transportation - Protection from moisture and ultraviolet light 【Effects of Implementation】 - Maintenance of germination rate - Preservation of seed quality - Extension of storage period

In the food industry, maintaining the freshness of products is extremely important for preserving quality and enhancing customer satisfaction. This is especially true for foods that are susceptible to moisture and oxygen, where appropriate packaging is essential. Easy-open aluminum craft over-laminated bags, with their high moisture resistance and light-blocking properties, help suppress food deterioration and keep freshness for a longer period. 【Usage Scenarios】 - Packaging for powdered foods, dried foods, tea, seaweed, etc. - Long-term storage of food and maintaining quality during transportation - Preventing foreign matter contamination 【Benefits of Implementation】 - Suppresses food quality deterioration and contributes to extending the shelf life - Improved ease of opening enhances work efficiency - Reduces the risk of foreign matter contamination and ensures safety

In the spice industry, it is important to maintain product quality by preserving aroma and preventing foreign matter contamination. In particular, it is essential to prevent deterioration caused by moisture and light, and to maintain quality until the product reaches the consumer. The easy-open aluminum craft overlaminate bag protects the aroma of spices and prevents quality degradation due to its high moisture resistance and light-blocking properties. Its easy-opening feature also enhances convenience. [Usage Scenarios] - Packaging for spices - Packaging for foods that need to preserve aroma - Packaging for products that need to prevent foreign matter contamination [Benefits of Implementation] - Aroma preservation - Prevention of foreign matter contamination - Improved ease of opening

In the tea leaf industry, it is important to protect tea leaves from oxidation and moisture to maintain quality. In particular, oxidation, which can compromise the flavor of tea leaves, is a major factor in quality deterioration. Easy-open aluminum craft over-laminated bags suppress oxidation of tea leaves due to their high moisture resistance and light-blocking properties, preserving quality. 【Usage Scenarios】 * Packaging of tea leaves * Storage of tea leaves * Quality preservation during transportation 【Benefits of Implementation】 * Preservation of tea leaf quality * Maintenance of flavor * Improvement of customer satisfaction

In the seed industry, it is important to maintain the germination rate of stored seeds. In particular, moisture and light accelerate the deterioration of seeds and reduce their germination ability. Proper packaging helps preserve seed quality and contributes to stable supply. Easy-open aluminum craft overlaminate bags prevent the deterioration of seed quality and contribute to maintaining the germination rate due to their high moisture resistance and light-blocking properties. 【Usage Scenarios】 - Seed storage - Quality preservation during transportation - Long-term storage 【Benefits of Implementation】 - Maintenance of germination rate - Preservation of seed quality - Improved inventory management through long-term storage

In the fertilizer industry, moisture control is crucial for maintaining product quality. Fertilizers can clump together or deteriorate in quality due to humidity. Our "Single Stitch Poly Insertion Type" protects fertilizers from moisture by setting the poly bag inside, thus preserving quality. 【Usage Scenarios】 - Storage of fertilizers - Transportation of fertilizers - Temporary outdoor storage 【Benefits of Implementation】 - Suppression of fertilizer quality deterioration - Improved product reliability - Increased customer satisfaction