What are the specifications and sizes of cement packaging bags? Are paper bags the same as woven bags?

Paper bags are the same as woven bags.

According to the national standard of GB9774-20 10 cement packaging bags, it is divided into adhesive bottom bags and seam bottom bags. Paper bags are paste bottom bags, woven bags are paste bottom bags and seam bottom bags. At the same time, there are 50kg and 25kg according to the weight of packaging cement.

Size of paste bottom bag: 50kg length 640 10mm length 00mm width; 25kg long 480 10mm wide 3905 mm.

Size of bottom seam bag: 50kg, 780 10, 420.5mm in width; 25kg length 560 10mm width 3505 mm.

Extended data:

First, the paste bottom bag is also called the valve bag.

1, features: the valve pocket has the characteristics of improving packaging efficiency, convenient transportation, strong firmness and low breakage rate.

2. Classification of valve sleeve:

Valve bags can be divided into pp valve bags, PE valve bags, paper-plastic composite valve bags, kraft paper valve bags and multi-layer kraft paper valve bags according to materials.

The PP valve pocket is made of polypropylene woven cloth with a valve port on the top or bottom, which can improve the packaging efficiency compared with ordinary PP woven bags. PE valve sleeve is made of polyethylene woven cloth valve port;

Paper-plastic composite valve pocket is cast from plastic woven bag (cloth for short) (cloth/film composite is two in one, cloth/film/paper composite is three in one); Kraft paper valve pocket is mainly kraft paper, which is divided into imported kraft paper and domestic kraft paper.

3. According to the opening, the valve sleeve can be divided into:

Upper open valve sleeve, lower open valve sleeve, upper open valve sleeve and lower open valve sleeve.

4. Application of valve sleeve

The valve pocket is mainly used for packing powdery or granular solid materials and flexible articles, such as edible powder, chemical powder, fertilizer, synthetic materials, explosives, grain, salt and minerals. It is especially suitable for export enterprises and can improve the packaging grade of products.

Second, seam bottom open pocket: also known as seam bottom open pocket: it is a traditional packaging bag form used by most enterprises.

The bottom is sealed with high-strength fiber thread, with easy-to-pull opening, which is convenient to operate when unpacking. This kind of bag can be used with plastic bags and aluminum foil bags.

Products suitable for packaging: chemical raw materials, plastic materials, dry powder building materials, fine minerals, nano materials, food additives, etc.

Main categories:

1, multi-layer kraft paper bag: three or more layers of kraft paper bags can be coated with PP material to play a waterproof role. Russian kraft paper or Canadian white kraft paper can be imported, and inner film bags can be added. Color offset printing can also be used. The form is an opening at the bottom of the seam, which has the characteristics of environmental protection and hygiene.

2. Three-in-one paper-plastic composite bag: also known as three-in-one composite paper bag, it is a small bulk container, which is mainly transported by manpower or forklift. It is convenient for loading and unloading small bulk powdery and granular materials, and it is the most popular and practical general packaging material at present.

Process description: refined kraft paper is used outside and plastic woven cloth is used inside. Plastic particles PP are melted at high temperature and high pressure, and kraft paper and plastic woven cloth are combined together. You can add an inner bag. The form is the same as that of opening the pocket at the bottom of the seam, with good strength, waterproof and moisture-proof.

References:

Baidu encyclopedia-sewing the bottom and opening the bag

References:

Baidu encyclopedia-valve pocket