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BAG×ナイカイ企業 - メーカー・企業と製品の一覧

BAGの製品一覧

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Bag-making service

We offer a variety of bag products, including paper bags, plastic bags, and cross-container bags.

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.

  • Packaging Bags
  • Other packaging materials

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Introduction to "Product Management" in the Bag Manufacturing Industry

In computer management, both shipping speed and capacity have increased.

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.

  • Bag making machine/slitter
  • Other contract services

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Introduction to the "Entire Folding and Sealing Equipment" in the Bag Manufacturing Industry.

We have fully automatic film bottom folding and pasting machines, as well as pinch-back folding and pasting machines.

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.

  • Bag making machine/slitter
  • Other contract services

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Easy Open Aluminum Craft Overlaminate Bag

Achieving high moisture resistance and light-blocking properties with a laminated structure made of aluminum and LLDPE, among others. We are also presenting case studies on solving issues related to kraft paper bags and container bags.

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.

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  • Packaging Bags

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[Resin and Food Related] Introduction of Paper Bags for Customers Troubled by Humidity Issues

[To our customers in the resin and food industries] We would like to introduce paper bags that are resistant to moisture problems!

The contents filled in the paper bag have absorbed moisture and solidified, making them unusable. The molding defects occurred due to the resin absorbing moisture. The above inquiries have been received from many customers, including resin manufacturers and food-related manufacturers. Our company has experience in handling paper bags designed to address moisture issues. This is not just a single item! We will introduce paper bags suitable for various applications. [Paper Bags] ■ Sewn bags + (PE, AL, others) ■ Bottom-sealed bags + (PE, AL, others) ■ Easy-open bags + (PE, AL, others) * PE: Polyethylene film AL: Aluminum composite laminated film Others: Other resin composite laminated films By adding materials other than kraft paper to the inner layer of the paper bag, we can enhance moisture resistance and prevent the contents from absorbing moisture. The effectiveness is achieved by combining regular paper bags with either polyethylene film, aluminum composite laminated film, or other resin composite laminated films. The manufacturing technology for paper bags that combine bottom-sealed bags with aluminum composite laminated film is a technique that only a few companies, including ours, can perform!

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  • Paper and pulp products

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Issues and Solutions with Kraft Paper Bags: The Problem of Unreadable Printed Text!

Introducing the types of ink used for printing! Each has its own characteristics, with advantages and disadvantages!

The information printed on the paper bag includes the product name, ingredients, precautions, legal markings, and other important details. If this information is not clearly visible, it could lead to troubles or accidents. Updating the design? That is one solution, but there are limitations to the printable area. As a countermeasure, let's try changing the type of ink used for printing. Each type of ink has its own characteristics, with advantages and disadvantages. If the ink printed on the paper bag is oil-based, how about switching to water-based ink? When changing from oil-based to water-based, there is no need to remake the printing plate. [Countermeasures] - Try changing the type of ink used for printing - Oil-based - Water-based - Organic solvent-based *For more details, please refer to the PDF document or feel free to contact us.

  • container

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Issues and Solutions for Craft Paper Bags: Sewing Thread of Sewn Paper Bags Frays

There is a possibility that the filling material may leak from that part! Here is a solution to the fraying problem!

The sewing thread of the sewn paper bag is fraying! Have you ever experienced this when trying to fill the paper bag with contents or when attempting to transport and open the filled paper bag? The cause is that the crepe sewing part of the sewn paper bag can come into contact with or get caught on other objects during transportation or while working. If you continue working or transporting without noticing that the sewing thread is fraying, there is a risk that the contents could leak from that area in the worst-case scenario. By applying an over-tape process, you can solve the problem of fraying sewing threads. [Countermeasures] <Over-Tape Processing> ■ Covers and protects the sewing seams of the sewn paper bag ■ Prevents the sewing thread from coming undone at the ends ■ Since the sewing thread does not protrude externally, it prevents foreign matter from mixing in ■ It is also possible to prevent leakage of the contents *For more details, please refer to the PDF document or feel free to contact us.

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  • container

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Issues and Solutions for Kraft Paper Bags: Want to Separate Outer and Inner Bags - Solution 2

Introducing bags suitable for optical resin applications using special adhesive (release adhesive)!

There was a request to separate and use the paper bag (outer layer) and the PE film bag (inner layer). At Naikai Corporation, it is possible to manufacture paper bags that can be separated even during simultaneous bag production. The "Back-in-Back Bag" uses a special adhesive (release adhesive), allowing for easy separation and removal of the inner layer bag (such as PE film bags). This bag is suitable for applications requiring foreign matter contamination prevention, such as food ingredients, pharmaceutical materials, and even optical resin applications. 【Back-in-Back Bag Features】 ■ Uses a special adhesive (release adhesive) ■ Allows for easy separation and removal of the inner layer bag (such as PE film bags) ■ Adopts an easy-open feature ■ Reduces the introduction of foreign matter into clean rooms, etc. ■ Facilitates easy sorting when disposing of the bag *For more details, please refer to the PDF document or feel free to contact us.

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  • container

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Inner bag misalignment prevention container *Basic knowledge and improvement examples will be provided.

Have you ever had trouble with the inner bag slipping out? In the midst of rising raw material costs, we aim for cost reduction and time savings.

The "inner bag" is a reliable presence that protects important products from "foreign substances," "water damage," and "powder leakage," but it can sometimes "interfere" with your work. In such cases, let's quickly resolve it using the "inner bag slip prevention"! 【Are you facing any of these issues?】 ■ The hopper gets clogged ■ Raw materials are not being discharged properly ■ Residual raw materials remain *For more details, please refer to the PDF document or feel free to contact us.

  • plastic

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