柏原製袋 List of Products and Services

We would like to introduce the "large bags" that we handle. We can manufacture bags with a maximum depth of approximately 1100mm (in the direction of the raw material width) and a maximum opening of about 5000mm (in the flow direction). We also produce three-sided bags with the raw material width on the opening side and the flow direction as the depth. Additionally, it is possible to attach zippers and gussets, and by installing a degassing valve, we can also manufacture commercial bags such as large sealed bags. 【Features】 ■ Capable of manufacturing bags with a maximum depth of approximately 1100mm and a maximum opening of about 5000mm ■ Capable of producing three-sided bags with the raw material width on the opening side and the flow direction as the depth ■ Zippers and gussets can also be attached ■ By installing a degassing valve, it is possible to manufacture commercial bags such as large sealed bags *For more details, please refer to the related links or feel free to contact us.

• Packaging materials

We would like to introduce our "stand-up bags." We offer a variety of options including zippered, notched, and check valve types. We have various sizes of gusset molds available. The dimensions we can manufacture range from 200×300mm to 500×500mm; for other sizes, please consult us separately. 【Features】 ■ Stand-up bags ■ Various sizes of gusset molds available ■ Manufacturing dimensions: 200×300 to 500×500mm (for other sizes, please consult us separately) *For more details, please refer to the related links or feel free to contact us.

• Packaging materials

We would like to introduce our "degasification bags." These bags are suitable for food items that produce gas, such as rice bags. By placing gas-producing contents inside the bag, the internal pressure increases, causing the check valve to open and allowing the gas generated outside the bag to be discharged, thereby preventing the bag from bursting. 【Features】 ■ Place gas-producing contents inside the bag, which opens the check valve due to the increase in internal pressure. ■ Prevents bag bursting by discharging gas generated outside the bag. ■ Available manufacturing dimensions: 100×100 to 750×750 mm (for other sizes, please consult us separately). *For more details, please refer to the related links or feel free to contact us.

• Packaging materials

We would like to introduce our "Double Pack." The available manufacturing dimensions are from 100×100 to 500×500 mm. It is suitable for simple cushioning materials for domestic transportation, as well as wrapping materials for gifts and events. Air is injected into the bag through a straw via a one-way valve, creating an air layer that surrounds the contents stored in the storage layer, making the contents appear to float. 【Features】 ■ Air is injected into the bag through a straw via a one-way valve ■ An air layer surrounds the contents stored in the storage layer ■ The contents appear to float ■ Available manufacturing dimensions: 100×100 to 500×500 mm (for other sizes, please consult separately) *For more details, please refer to the related links or feel free to contact us.

• Packaging materials

We would like to introduce our "Single Pack" that we handle. Using a one-way valve, gas or liquid can be injected into the bag through a straw. When the straw is removed, the gas or liquid inside the bag does not leak. We offer variations such as notches for disposal and deformable seals, which can be used for gap cushioning materials, anti-bird bags (deformable products), and water storage bags for emergencies. 【Features】 ■ Gas or liquid can be injected into the bag through a straw using a one-way valve ■ The gas or liquid inside the bag does not leak when the straw is removed ■ Available manufacturing dimensions: 100×100 to 750×750 mm (for other sizes, please consult us separately) *For more details, please refer to the related links or feel free to contact us.

• Packaging materials

Are you having trouble with the inner bags of your FIBC (Flexible Intermediate Bulk Container) swelling due to fermentation gases or rising temperatures? In such cases, please try our gas release valve, the "Adhesive Valve." The usage is simple: just make a hole in the bag and attach it. When the internal pressure rises, the gas will escape, preventing bag rupture. Additionally, it prevents backflow from the atmosphere into the bag, which helps to avoid oxidation and deterioration of the contents. 【Product Usage Example】 ■ For inner bags during the production of fermented feed When using fruit pomace as feed, the bags previously used would swell, causing load collapse or bag rupture. By using our "Adhesive Valve," we were able to prevent load collapse and bag rupture. *We are offering free samples. For more details, please refer to the PDF document or feel free to contact us.

• Packaging materials

We handle the adhesive valve "Gas Release Valve for Large Bags." By attaching it to large bags such as inner bags of flexible containers, it allows for the release of gas generated from fermentation, prevents an increase in internal pressure due to rising external temperatures or filling of hot materials, and helps prevent bag rupture and load collapse. Additionally, after gas release, it blocks outside air. Please create a hole of approximately 15mm at the top of the target bag and attach the adhesive valve using the double-sided tape provided to cover the hole. 【Specifications】 ■ Material - Main body: Polyethylene/Nylon - Tape part: Rubber, Paper ■ External dimensions: 100×120mm ■ Opening pressure: 10KPa or less (design value) *For more details, please refer to the PDF document or feel free to contact us.

• Packaging materials