Just 0.1mm thick, the ultra-thin door 'KAMI' that overturns the common sense of interior doors is born.
KAMIYA Co., Ltd., a maker of interior doors, has announced "KAMI," a revolutionary 0.1mm-thick door made of paper, on April 1st only. This ultra-thin door uses recycled paper, features a unique tape installation method, and offers nearly 100% sound transparency to encourage family communication. The company clarifies this is an April Fool's Day announcement.
📋 Article Processing Timeline
- 📰 Published: April 1, 2026 at 18:00
- 🔍 Collected: April 1, 2026 at 09:36
- 🤖 AI Analyzed: April 16, 2026 at 19:57 (370h 21m after Collected)
KAMIYA Co., Ltd. (Isehara City, Kanagawa Prefecture, President & CEO: Tadashige Kamiya), a specialized manufacturer of interior doors "Full Height Door®", will release a new product on April 1st only, "KAMI" (Kami), an interior door made of paper, which completely revolutionizes the common sense of doors.
**Development Background**
Our company has always pursued the thickness of Full Height Door® with the aim of achieving a sense of luxury and the highest quality. However, recently we've heard an unexpected voice from customers saying, "We're tired of thick doors." Therefore, we decided to challenge the limits of "thinness," the opposite extreme.
**Product Features**
**1. The trending eco-recycled paper "Shinwaraban Paper"**
We adopted "Shinwaraban Paper," which won the Grand Prize at the Best Paper Award 2025, organized by the Japan Paper Association (JPMA).
**2. Just Tape Method** *Patent pending*
Ultra-low-cost installation where the transparent film with a special polymer adhesive layer is simply pressed onto the door frame to complete installation.
**3. With Door Stopper**
A door stopper is included in the standard set.
Material: Tape
**4. Delivery cost for one door is only a few hundred yen**
Achieving an unprecedented innovative packaging style, we have significantly reduced shipping costs.
**5. Sound transmission rate is almost 100%**
KAMI, which achieves the ultimate minimalist style by eliminating soundproofing functions, allows conversations inside and outside the room to be almost completely audible. It removes the barrier of privacy and activates family communication.
**Precautions for Use** (Please read carefully)
- Naturally, it will tear if pulled strongly. Because it's paper.
- If touched with wet hands, it will become wrinkled and, in the worst case, tattered, as it is paper.
- Due to its structure, secrets are easily revealed, so please exercise considerable caution in your conversations.
- Please be careful when raising goats. They tend to recognize it as a snack because they love paper.
*KAMI is covered by a lifetime warranty against warping, but the above cases are exempt.
**[Product Outline]**
Product Name: KAMI
Price: 1,200 yen/m
Release Date: April 1, 2026
Size: 0.1mm x 90cm
Weight: Almost none
Color: White
Opening Style: Swing door
We hope you enjoyed it.
This is an article intended for you to enjoy April Fool's Day.
KAMIYA will continue to engage in the development of products and services that contribute to the enriched lives of our customers, and the planning of events that customers can enjoy.
Well then, have a wonderful day.
**Development Background**
Our company has always pursued the thickness of Full Height Door® with the aim of achieving a sense of luxury and the highest quality. However, recently we've heard an unexpected voice from customers saying, "We're tired of thick doors." Therefore, we decided to challenge the limits of "thinness," the opposite extreme.
**Product Features**
**1. The trending eco-recycled paper "Shinwaraban Paper"**
We adopted "Shinwaraban Paper," which won the Grand Prize at the Best Paper Award 2025, organized by the Japan Paper Association (JPMA).
**2. Just Tape Method** *Patent pending*
Ultra-low-cost installation where the transparent film with a special polymer adhesive layer is simply pressed onto the door frame to complete installation.
**3. With Door Stopper**
A door stopper is included in the standard set.
Material: Tape
**4. Delivery cost for one door is only a few hundred yen**
Achieving an unprecedented innovative packaging style, we have significantly reduced shipping costs.
**5. Sound transmission rate is almost 100%**
KAMI, which achieves the ultimate minimalist style by eliminating soundproofing functions, allows conversations inside and outside the room to be almost completely audible. It removes the barrier of privacy and activates family communication.
**Precautions for Use** (Please read carefully)
- Naturally, it will tear if pulled strongly. Because it's paper.
- If touched with wet hands, it will become wrinkled and, in the worst case, tattered, as it is paper.
- Due to its structure, secrets are easily revealed, so please exercise considerable caution in your conversations.
- Please be careful when raising goats. They tend to recognize it as a snack because they love paper.
*KAMI is covered by a lifetime warranty against warping, but the above cases are exempt.
**[Product Outline]**
Product Name: KAMI
Price: 1,200 yen/m
Release Date: April 1, 2026
Size: 0.1mm x 90cm
Weight: Almost none
Color: White
Opening Style: Swing door
We hope you enjoyed it.
This is an article intended for you to enjoy April Fool's Day.
KAMIYA will continue to engage in the development of products and services that contribute to the enriched lives of our customers, and the planning of events that customers can enjoy.
Well then, have a wonderful day.