緑屋紙工 List of Products and Services

We would like to introduce the wax coating process that we handle. By impregnating with wax, the strength of the paper increases, providing water and oil resistance, making it suitable for use in food packaging bags, among other applications. Applying wax coating to envelopes also brings about various effects. The penetration of wax gives a very retro and vintage appearance, and since the degree of wax penetration varies, the uneven transparency becomes a charming point. 【Features】 ■ Retro appearance ■ Increased transparency of contents ■ Wrinkles and folds add character *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce the adhesive processing that we handle. This processing involves creating holes in the adhesive area inside the envelope, intentionally bonding the interior of the envelope. It is used when there are perforated cut lines on the envelope and you do not want the contents to shift outside of those lines. With a simple idea, you can improve the usability of the envelope. For production and inquiries, please feel free to leave it to Midoriya Paper Works. 【Usage Scenarios】 ■ When there are perforated cut lines on the envelope and you do not want the contents to shift outside of those lines ■ When you want to create hook holes in paper packaging but want to prevent the contents from spilling out ■ When you want to show as much of the contents as possible through the window of the envelope ■ When you want to prevent the contents from going outside the window ■ When you want to staple the edges of the envelope and prevent the contents from shifting *For more details, please refer to the PDF materials or feel free to contact us.

• Other packaging materials

We would like to introduce the Arabic gum processing that we handle. This type is applied with water on the back of the stamp, allowing it to be moistened and attached. Many automatic inserting and sealing machines used for direct mail (DM) are compatible with Arabic gum, which is frequently used in machine-inserted Western-style envelopes. The processing method involves applying the gum as the flap's tip is gradually shifted while passing through rollers in an unfolded state before being made into bags. At our company, we have modified the machines so that Arabic gum processing can also be done with center application on Western-style envelopes (vertical type). 【Features】 ■ A type that is moistened and attached with water applied to the back of the stamp ■ Using colored gum makes it easier to inspect for any missed application of the gum ■ Transparent options are also available to meet customer requests *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce a case study of the production of "re-peelable tape" at our company. The primary purpose of tape is to securely seal items. However, there are requests to open envelopes neatly without tearing them, and in such cases, re-peelable tape is used. While it cannot be used for applications where airtightness is crucial, such as mailing or product packaging, it is used when we want items like hand-delivered stationery to be opened neatly. [Case Overview] - Features: The tape leaves a clean surface after being peeled off. - Application: Used when we want items like hand-delivered stationery to be opened neatly. *For more details, please refer to the PDF document or feel free to contact us.

• Adhesive tape

We would like to introduce a case of producing "braille envelopes" at our company. In recent years, there has been an increase in inquiries about braille processing for envelopes, and we have conducted tests to see if braille can be read without being flattened due to the pressure during the bag-making process after braille printing. Issues such as braille being flattened or wrinkles appearing in the paper can occur depending on the type of paper used, the position of the braille, and the content, so we recommend proofreading and testing at the time of order. 【Case Overview】 ■ Specifications: Braille printing → Envelope bag-making ■ Features - Braille is created through pressing, and we do not use foaming inks or thermosensitive foaming paper. - Can be recycled as regular paper. *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce a case where we produced envelopes using paper with a laid pattern. Laid patterns can have the same direction as the paper grain or be in the opposite direction, so it is essential to check the actual direction of the laid pattern in the base paper. By utilizing the unique texture of the paper and adding a spot foil stamp, you can create very stylish and high-quality envelopes. 【Features】 ■ Brings design and atmosphere that cannot be expressed through printing ■ Clear instructions are needed on which direction the laid pattern should be oriented when making the envelope *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce the processing of envelopes using vapor-deposited paper (metallic paper) that we handle. The biggest feature of vapor-deposited paper is its overwhelming brilliance that shines like metal. This visual impact is often utilized in relatively thick printed materials such as packaging and book covers, but it can also be processed for envelopes. There is a wide variety of options available, including those with hairline patterns and embossing, allowing you to choose something that fits your design and purpose. 【Features】 ■ Overwhelming brilliance that shines like metal ■ Envelopes are processed using water-soluble adhesive ■ Recommended when you want to differentiate from ordinary envelopes ■ Metallic colors can also be expressed through printing *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce the envelope processing using Lezak 75, which we handle. Lezak 75 is a special paper characterized by a smooth texture with unevenness resembling kid leather. It comes in a wide range of colors and is used for various applications such as fancy letter sets, invitations, and paper packaging when making envelopes. During the papermaking process, there should be a regular pattern in the texture, but since the cutting position when trimming to flat sheets and during the envelope processing is random, the wrinkle positions in the finished products will vary. 【Features】 ■ The wrinkle positions in the texture differ for each envelope ■ A smooth texture with unevenness resembling kid leather *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

The advantages of gusseted bags are that they can be fully processed to the bottom by machine rather than by hand. This allows for cost reduction and shorter delivery times, and it is also possible to add windows for visibility or to attach release paper tape for easier insertion. The common feature of square bottom bags and gusseted bags is that they have side gussets, making it easy to insert thicker items. The difference lies in the shape of the bottom; square bottom bags have gussets all the way to the bottom, allowing for a larger quantity to be placed in the bag if the sizes are the same. However, depending on the size and paper quality, it may be necessary to attach the bottoms by hand, which can lead to higher costs and longer delivery times when dealing with large quantities. [Commonalities and Differences between Square Bottom Bags and Gusseted Bags] ■ Commonality: They have side gussets, making it easy to insert thicker items. ■ Difference: The shape of the bottom. *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce the efficient layout of diamond envelopes that we are implementing. Unlike traditional Japanese or Western envelopes, diamond-shaped envelopes allow for efficient layout by being arranged diagonally. While arranging them vertically or horizontally results in only two envelopes fitting, arranging them diagonally enables the fitting of six envelopes, significantly reducing the number of sheets of paper used. Additionally, even with the same paper size, there can be a threefold difference in layout efficiency. 【Features】 ■ Efficient layout is possible by arranging diagonally ■ Reduces the amount of paper used ■ There can be a threefold difference in layout efficiency even with the same paper size *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce an example of a custom-made gusset bag package produced by our company. Created for macarons and tsukudani, it has a 30mm gusset, allowing it to comfortably hold macarons and cookies that cannot fit in a standard flat bag. Since it can be made to order, you can change the size and paper to match your product, or add a window film to make the contents visible. Additionally, applying hot melt processing to the lid can also reduce the time required for sealing. 【Features】 ■ Excellent cost and delivery time ■ Convenient when you want to create a gusseted bag but keep costs down ■ Possible to change size and paper or add window film for visibility ■ Applying hot melt processing to the lid can reduce sealing time *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We will introduce the types and features of adhesive processing for envelopes that we handle. Adhesive is applied to the flap and body, and by overlapping the adhesives of the flap and body, they are bonded together. Arabic adhesive is a type that can be bonded by moistening it with water, similar to a postage stamp. Double-sided tape has strong adhesion and can bond even to papers that are difficult for adhesives to stick to, while hot melt is a type of adhesive that applies a resin-based adhesive and attaches a thin release paper. We can propose adhesive processing tailored to your needs and budget, so please feel free to consult with us. 【Features】 ■ Adhesive - There is no need to protect with release paper, eliminating the hassle and waste of peeling off release paper. - Relatively inexpensive compared to other adhesive processing methods. ■ Arabic - Commonly used for C5-sized envelopes. - Using colored adhesive makes it easier to inspect for any missed application of the adhesive. *For more details, please refer to the PDF materials or feel free to contact us.

• Other packaging materials

We would like to introduce a case where we performed adhesive processing on small envelopes for novelties and goods. The adhesive processing involves applying glue to the flap and the body, and by overlapping the glues of the flap and body, they bond together. Since the glues do not adhere to the paper unless they are aligned with each other, there is no need for release paper for protection, eliminating the hassle and waste of peeling off release paper. When sealing is done manually rather than by machine, the adhesive processing is a simple task of just closing the flap. If you thought it was impossible and were sealing with stickers or tape as a side job, please feel free to contact us. 【Case Overview (Partial)】 ■ Features of Adhesive Processing - Bonds by overlapping the glues of the flap and body - No hassle or waste from peeling off release paper - Relatively inexpensive among mouth glue processing - Recommended for manual sealing tasks *For more details, please refer to the PDF materials or feel free to contact us.

• Other packaging materials

We would like to introduce a case where we created envelopes using AF Protect H, a paper designed for preservation and protection. AF Protect is a weakly alkaline barrier paper that protects contents from strong acidic substances. It is also used for preservation envelopes in libraries that store large amounts of documents and books. It is suitable for use in libraries, museums, and art galleries for protecting valuable books, documents, paintings, and photographic records. 【Case Overview】 ■ Features: AF Protect H, which is weakly alkaline and suitable for preservation and protection ■ Examples of AF Protect H applications - As protective bags for valuable books, documents, paintings, and photographic records in libraries, museums, and art galleries - For storing important collections - As cushioning material for plywood backing boards of frames, which emit acidic substances *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

We would like to introduce a case where we produced "envelopes with protective film for lenses." The inner surface of the bag is almost entirely covered with a soft-touch rayon (non-woven fabric) film, which bends softly like waves, allowing it to gently adhere to the items inside and making it difficult to scratch them. Additionally, while the adhesive area is usually hidden on the inside of a standard envelope, we intentionally placed it on the outside to prioritize the smoothness of the contents. This design is intended for use with lenses for glasses and cameras, acrylic stands, LCD mobile phones, and mobile phone protective films. 【Case Overview】 ■ Features - The inner side of the bag is covered with a rayon (non-woven fabric) film to protect the lenses. - The adhesive area is on the outside, making it less prone to scratches. ■ Intended Uses - Lenses for glasses and cameras, acrylic stands, LCD mobile phones, mobile phone protective films, glass crafts, and delicate accessories. *For more details, please refer to the PDF document or feel free to contact us.

• Other packaging materials

Midoriyagami Co., Ltd. creates envelopes that utilize visually appealing colors and shapes that match the "brand" of companies, products, and services, as well as paper qualities and special processing that engage the sense of touch. <Features> 〇Challenge Spirit We actively take on challenges in planning, developing, and manufacturing original products. 〇Sensitivity We offer proposals that transform creative ideas into tangible forms. 〇Responsiveness With our experience and technology, we handle custom orders and special processing seamlessly and flexibly. 〇Imagination We realize made-to-order products. *For more details, please download the PDF or feel free to contact us.

• Other packaging materials
• Packaging Bags