ナイカイ企業 List of Products and Services

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.

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.

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.

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 "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.

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.

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.