(1): Definition of square bottom valve bag:

Square bottom valve bag，A small bulk packaging container
block bottom woven bag is a small bulk packaging container, which is convenient, neat and has good sealing performance. It is one of the most popular packaging materials in the world, especially suitable for export packaging.

(2): Process description of block bottom valve bag:
valve bags with block bottom is based on paper-plastic composite bag or kraft paper bag. The specifications and dimensions are based on customer requirements. Environmentally friendly glue is used and it is manually folded to make a packaging bag with upper and lower seals or lower seals and upper openings.

(3): Performance parameters of block bottom valve bag:
Surface material: natural, white, colored kraft paper or stretch kraft paper.
Inner layer material: natural, white kraft paper or stretch kraft paper.
Additional materials: PP, PE moisture-proof film can be added.
Valve port type: flange type, cylinder type, film type or according to user needs. Inner valve port and outer valve port can be customized according to customer needs.
Product features: Fully environmentally friendly green product, diversified materials, suitable for different product packaging requirements, all-paper packaging meets environmental protection and export packaging requirements to Europe and the United States, produced according to food hygiene requirements, high temperature dehumidification and drying, exquisite printing, beautiful package shape, large package volume, standing packaging, suitable for automatic filling by packaging machinery.

(4): Ad star bags are widely used for packaging of powdered and granular products such as chemical raw materials, new building materials, high-tech materials, pharmaceutical additives, food additives, starch, milk fat, engineering plastics, leaf paper bags, pet food bags, etc.

Shijiazhuang Boda Plastic Chemical Co., Ltd, is a pp woven bag manufacturer engaged in this industry since 1983.
With the continuous increasing demand and a great passion for this industry, we now have a wholly-owned subsidiary named Shengshijintang Packaging Co., Ltd.
We occupy a total of 16,000 square meters of land, around 500 employees working together. And our yearly production capacity is around 50,000MT.
We possess a series of advanced Starlinger equipment including extruding, weaving, coating, laminating, and bag produce. It was worth mentioning that, we are the first manufacturer in domestic that imports the AD* STAR equipment in the year 2009. With the support of 8 sets of ad starKON , our annual out put for AD Star bag exceeds 300 million.
Besides the AD Star bags, BOPP bags, Jumbo bags, as traditional packaging options, are also in our main product lines.