Nakano-ku

What Nakano-ku does

株式会社エヌケイパッケージ (NK Package Co., Ltd.) is a Japanese corrugated cardboard box manufacturer founded in 1927 (Showa 2) in Nakano-ku, Tokyo, originally as a wooden produce box manufacturer. The company transitioned into corrugated cardboard box manufacturing as packaging materials shifted from wood to paper-based products, and now operates two factories in the Kanto region: a Tokyo factory in Higashimurayama and a Saitama factory co-located with its headquarters in Namekawa, Kawaguchi, Saitama Prefecture. NK Package is a subsidiary member of the Sakai Moving Center (サカイ引越センター) Group, Japan's largest moving company, an affiliation that provides a stable, high-volume captive demand base and access to logistics-sector customers.

The company produces a comprehensive portfolio of corrugated box formats including A-style (most common), B-style, C-style (gift cases), N-style (flat-bottom), one-touch assembly, hell-bottom (American lock), wrapped-style (tato-style), and poster/calendar cases, alongside specialized processing options such as stitching, rivets, hand grips, and partitions. It also distributes ancillary packaging materials including cushioning materials (緩衝材), protective sheets, kraft and cloth tape, stretch film, PP bands, and coated board paper. Manufacturing is anchored by a large-scale single-pass forming machine that performs printing, box forming, and strapping in one operation, supplemented by auto-press die-cutting equipment, rotary equipment, and stitchers for custom and non-standard orders.

NK Package operates a direct B2B sales model with no e-commerce or self-serve channel, accepting orders via phone (042-396-3661) and a website inquiry form. Its customers span logistics companies, government agencies, cosmetics, food, confectionery, and industrial product manufacturers. The company is privately held with 9 million yen in registered capital, is led by CEO Watanabe Tomoaki (渡邊 知亮), and shows no venture capital, private equity, or public market ownership.

Name

Nakano-ku

Legal name

株式会社エヌケイパッケージ

Website

https://nk-package.co.jp

Company type

Private

Founded year

1927

Operating status

Operating

Short description

株式会社エヌケイパッケージ (NK Package Co., Ltd.) is a 1927-founded corrugated cardboard box manufacturer operating two Kanto-region factories. It serves B2B logistics, government, cosmetics, food, and industrial customers as a subsidiary of Japan's largest moving company, Sakai Moving Center.

Ownership category

akta.pro rank

Product category

Corrugated Cardboard Packaging Manufacturing

NAICS

Corrugated and Solid Fiber Box Manufacturing (322211)

SIC

Paperboard Containers & Boxes (2650)

akta.pro primary industry

Corrugated Packaging (Boxes, Sheets, Pads) (IMALACAA)

Keywords

• Corrugated cardboard boxes
• Packaging materials
• Custom packaging solutions
• Industrial packaging supplies
• Protective packaging products

Headquarters

HQ city

Saitama

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Corrugated cardboard box manufacturing and sales: Design and manufacture of custom and standard corrugated cardboard boxes (A-style, B-style, C-style, N-style, slave-style,地狱底, one-touch, and specialty forms), sold to B2B customers. Primarily a product-based, one-time transaction revenue model with repeat orders from established business customers.
2. Packaging material sales: Sale of ancillary packaging supplies including cushioning materials (緩衝材), protective sheets (養生シート), tape (クラフトテープ, 布テープ, トンテープ), stretch film (ストレッチフィルム), PP bands (PPバンド), kraft paper, coated board paper, and roll covers. These are consumable supplies generating recurring purchase transactions.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

株式会社エヌケイパッケージ designs, manufactures, and sells corrugated cardboard boxes in multiple standard and specialty formats (A-style, B-style, C-style, N-style, one-touch, hell-bottom, wrapping, poster/calendar cases) along with ancillary packaging materials including cushioning, protective sheets, tapes, stretch film, PP bands, kraft paper, coated board, roll covers, and labels/seals. Products are custom-manufactured and sold B2B to logistics firms, government agencies, cosmetics, food, confectionery, and industrial product manufacturers.

Product overview

株式会社エヌケイパッケージ is a corrugated cardboard box manufacturer operating as part of the Sakai Moving Center Group, with 90 years of history. The company produces a comprehensive portfolio of cardboard box products including various standard box styles (A-style, B-style, C-style, N-style), specialized bottom types (hell-bottom, one-touch), wrapping styles (奴式/タトウ式), and poster/calendar cases. The product lineup also includes special processing options (stitch加工, rivets, handles, partitions), raw materials (cardboard sheets, kraft paper, coated cardboard), chemical products (roll covers, air cushioning, stretch film), and packaging tapes. The company offers custom-made box solutions and labels/seals, serving logistics companies, government agencies, cosmetics, food, confectionery, and industrial product manufacturers.

Differentiator

Problem solved

Functional benefit

Products and services

• A-style boxes (Ａ式 / Mikan box) The most popular and cost-performance oriented corrugated cardboard box style, widely used as a general-purpose shipping and storage box. Targeted at B2B customers in logistics, manufacturing, and retail.
• B-style boxes (Ｂ式) Corrugated cardboard box with insertion-type opening mechanism, used for general shipping and packaging applications. Targeted at B2B logistics and manufacturing customers.
• C-style boxes (Ｃ式) Corrugated cardboard box with separate body and lid, used for gift cases requiring premium appearance. Targeted at cosmetics and gift packaging buyers.
• N-style boxes (Ｎ式) Corrugated cardboard box with completely flat bottom, used for book packaging and gift cases. Targeted at publishers, retailers, and gift packaging buyers.
• Custom-made corrugated boxes (オーダーメイド製品) Custom-manufactured corrugated cardboard boxes tailored to specific customer requirements in size, format, printing, and special processing. Targeted at B2B buyers with unique packaging specifications.
• Packaging materials (板紙・包装紙, 化成品, テープ) Comprehensive ancillary packaging materials for sale to B2B customers, including cardboard sheets, kraft paper, coated cardboard paper, roll covers, air cushioning, cushioning materials, stretch film, kraft tape, cloth tape, staple tape, and PP strapping bands. Targeted at logistics, manufacturing, and moving-industry buyers needing one-stop packaging supplies.
• Labels and seals (ラベル・シール) Labels and seals for packaging applications, sold as ancillary products to established box customers. Targeted at B2B buyers requiring complementary packaging labeling and sealing solutions.

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• サカイ引越センター (Sakai Moving Center)coreChannel Partner/ Reseller/ DistributorNK Package is a member of the Sakai Moving Center Group, the largest moving company in Japan. This affiliation provides the company with a stable, high-volume captive customer base for its packaging products. The group affiliation is prominently featured in the company's branding and website messaging ('引越業界最大手　サカイ引越センターグループ').

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Rengo Co., Ltd. Japan's largest paper and corrugated packaging company, producing corrugated boxes, folding cartons, and flexible packaging across multiple end markets. Directly comparable as a corrugated converter serving logistics, industrial, and consumer goods customers nationwide.
• Tomoku Co., Ltd. Long-established Japanese corrugated packaging manufacturer producing boxes, sheets, and packaging materials for logistics, manufacturing, and retail customers. Closely mirrors NK Package's corrugated-focused product mix and multi-vertical customer approach.
• Oji Container Co., Ltd. Corrugated packaging subsidiary of Oji Holdings producing boxes and related materials in Japan. Comparable as a converter leveraging a parent paper mill for supply, with national reach and similar B2B customer segments.

Broad incumbents

• Toyo Seikan Group Holdings, Ltd. Japanese packaging conglomerate producing metal, plastic, paper, and glass packaging. Comparable as a diversified Japanese packaging supplier serving consumer goods, food, and industrial customers with overlapping product categories.
• Mondi plc: Global paper and corrugated packaging producer with operations across Europe and emerging markets. Comparable as a scaled corrugated converter with a multi-vertical customer base, though much larger and vertically integrated.
• Smurfit Kappa Group: Global leader in paper-based packaging, including corrugated containers serving logistics, industrial, and consumer customers. Closest large international analogue to NK Package's product set and B2B sales model.
• International Paper Company: World's largest pulp and paper company with a significant global corrugated packaging business. Relevant as an incumbent corrugated competitor, though at a scale and geographic footprint well beyond NK Package's.
• Nippon Paper Industries Co., Ltd. Major Japanese paper manufacturer with a substantial packaging division including corrugated and paperboard products. Overlaps with NK Package in corrugated boxes and packaging materials but operates at vastly larger scale with integrated pulp/paper supply.

Emerging players

• Toppan Holdings Inc. Japanese printing and information services group with a growing packaging segment including paperboard and corrugated-related solutions. Partially comparable as it expands into sustainable and functional packaging adjacent to NK Package's product lines.

Others

• Sealed Air Corporation: Global protective packaging producer (bubble wrap, air pillows, cushioning, food packaging). Comparable on the air-cushion and protective materials portion of NK Package's offering, though focused on inflatable/protective rather than corrugated.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nakano-ku