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  1. Home
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  3. ジュンコーポレイション
Resin/Plastic
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ジュンコーポレイション

EstablishmentFebruary 20, 1973
capital1000Ten thousand
number of employees35
addressGunma/Annaka-shi/53-1 Kamimasuda, Matsuidamachi
phone027-393-1375
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last updated:May 12, 2025
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ジュンコーポレイション Company Overview

We are a plastic injection molding manufacturer aiming to be the overwhelming No. 1 in gas injection.

We are engaged in the manufacturing and sales of plastic injection molded products for automobiles, medical devices, and more. We are particularly focused on gas assist technology, a specialized manufacturing method, aiming to achieve the No. 1 position and enhance our technical standards. Grip components for automobiles produced using gas assist methods have been adopted by major automotive parts manufacturers, expanding our market share, and we are also conducting joint research and development with automobile manufacturers, achieving high recognition for our development capabilities. We hope to pave the way for a happy future together with everyone involved in Jun Corporation.

Business Activities

Manufacturing and sales of plastic injection molded products and molds. We are particularly focused on gas assist technology for plastic product molding. In plastic injection molding, after resin filling, nitrogen gas is injected to form the product, which improves dimensional accuracy by one digit and enhances appearance by reducing defects such as sink marks, warping, and burrs. Gas injection technology is used for thick-walled products that were previously impossible to mold, such as automotive grips, and is adopted in industries including automotive, home appliances, and medical fields. Companies with gas assist molding technology account for about 1% of the industry, and even major companies typically have only 1 to 2 lines of equipment. Over approximately 10 years, we have implemented this technology across all 17 production lines, gaining overwhelming competitive advantage. We continue to strive for further technological advancement through initiatives such as support business utilization.

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Products/Services (4)

Improvement Recipe for Defects: Gas Injection Edition product image
Improvement Recipe for Defects: Gas Injection Edition
Case Study Collection: Cost Reduction Recipes product image
Case Study Collection: Cost Reduction Recipes
Improvement case using gas injection (gas-assisted molding) product image
Improvement case using gas injection (gas-assisted molding)
Molding Gas Injection product image
Molding Gas Injection

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catalog(3)

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Recipe for Improving Defects: Gas Injection Edition

Recipe for Improving Defects: Gas Injection Edition

TECHNICAL
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Case Study Collection: Cost Reduction Recipes

Case Study Collection: Cost Reduction Recipes

TECHNICAL
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Jun Corporation Company Profile

Jun Corporation Company Profile

COMPANY
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Detailed information

Company name ジュンコーポレイション
number of employees35
Contact addresspostalcode 379-0211 Gunma/ Annaka-shi/ 53-1 Kamimasuda, MatsuidamachiView on map TEL:027-393-1375 FAX:027-393-4331
Key PartnersOki Electric Industry Co., Ltd. Canon Electronics Inc. San Electronics Co., Ltd. Pacific Industrial Co., Ltd. Chino Corporation Mitsubishi Electric Corporation Yamato Industry Co., Ltd.
Industry Resin/Plastic
ジュンコーポレイション Building Image

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