Year1
- 颜色：
- 单色|多色
- 尺寸：
- 71x134x18
- 纸张：
- 3层进口纸
Kraft paper bag is a packaging container made of composite materials or pure kraft paper. It is non-toxic, odorless, non-polluting, low-carbon and environmentally friendly, in line with national environmental protection standards, has high strength and high environmental protection, and is currently the most popular in the world. One of the environmentally friendly packaging materials.
Kraft paper bags are based on whole wood pulp paper. The colors are divided into white kraft paper and yellow kraft paper. A layer of film can be applied on the paper to provide waterproofing. The strength of the bag can be made according to the customer's requirements. Up to the sixth layer, printing and bag making are integrated
. The opening and back sealing methods are divided into heat sealing, paper sealing and lake bottom. Including three-layer paper bags, four-layer paper bags, multi-layer paper bags use a layer of film on the paper to provide waterproofing, and use imported Russian yellow kraft paper or Canadian white kraft paper, plus an inner film bag that can be color offset printed. The form is seam-bottom opening, which is environmentally friendly and hygienic. Multi-layer kraft paper bags are made of imported kraft paper, domestic kraft paper, and a perfect composite material of kraft paper and new woven cloth. Plastic bags can be added inside the bag to fully meet food grade requirements. You can choose the packaging that suits you. The styles include seam-bottomed open type and pasted-bottomed open type, which are the packaging methods most chosen by export companies. It can be mainly used for packaging chemicals, food additives, feed additives, pigments, milk powder, dry powder mortar and other building materials products.
According to the material, it can be divided into kraft paper bags, aluminum composite kraft paper bags (kraft paper composite aluminum foil), woven bags, composite kraft paper bags (general Larger bag size)
*Three-layer white kraft paper bag, you can use a layer of film on the paper for waterproofing. Imported Canadian white kraft paper is used. In addition, the inner film bag can be color offset printed. The form is a seam-bottom opening, which is environmentally friendly and hygienic. Multi-layer kraft paper bags are made of imported white kraft paper, domestic white kraft paper, and a perfect composite material of white kraft paper and new woven fabric. Plastic bags can be added inside the bag to fully meet food grade requirements. You can choose the packaging that suits you. The styles include seam bottom open type, paste bottom open type, paste floor valve bag suitable for filling equipment, seam floor valve bag, etc. Valve bags and open-mouth bags are currently the main types of paper bags, and they are also the packaging methods commonly used by export companies.
Multi-layer white kraft paper bags (four-layer paper bags) are high-strength packaging made of high-quality white kraft paper. Generally, the outer layer is made of imported white kraft paper and the inner layer is made of imported yellow kraft paper. Four layers of yellow-white imported kraft paper can also be used. Kraft paper has high strength and good toughness, and can be coated with a waterproof film inside one layer of paper to prevent water and moisture. It can also be lined with an inner film bag, and a low-pressure or high-pressure inner film bag can be used. The bottom and top are sealed with crepe paper seams or hot melt glue. This packaging bag is suitable for packaging pigments, dyes, starch, food additives, plastics, chemical products, pharmaceutical raw materials, carbon black, etc.
Square bottom valve bag Commonly known as paste bottom bag, it is a kind of packaging bag born under the guidance of the idea of improving packaging efficiency and convenient transportation. The overall appearance of the bag is square, which is very suitable for stacking and transporting. The valve port at the bottom is convenient for filling materials,
and the sealing is simple and easy. New environmentally friendly packaging suitable for canning equipment can be divided into paper-plastic composite valve bags or multi-layer paper valve bags. For convenience during filling, holes can be punched in the bag body to facilitate gas discharge and prevent the bag from bursting during filling.
A layer of plastic film can be added in the middle of the paper to package products that need to be moisture-proof.
Square bottom valve bag process description
Square bottom valve bag is based on paper-plastic composite bag or kraft paper bag. The specifications and dimensions are based on customer requirements. It uses environmentally friendly glue and is folded by hand to make upper and lower seals. , or packaging bags with lower seal and upper opening
Performance parameters of square bottom valve bag
Surface material: natural, white, colored kraft paper or stretch kraft paper.
The inner material is natural color, white kraft paper or stretch kraft paper.
Additional materials can be attached, moisture-proof film.
Valve port type: flange type, barrel type, membrane type or according to user needs. The inner and outer valve ports can be customized according to customer needs
Product features are fully environmentally friendly and green product materials are diversified to adapt to different product packaging requirements. The full paper packaging complies with environmental protection and export packaging requirements for Europe and the United States, and is in accordance with food hygiene requirements Production, high temperature dehumidification and drying, exquisite printing, beautiful package shape, large packaging volume, standing packaging, suitable for automatic filling by packaging machinery.
Scope of application of square bottom valve bags
Widely used in chemical raw materials, new building materials, high-tech materials, pharmaceutical additives, food additives, starch, milk fat, engineering plastics, leaf paper bags, pet food bags and other powders and packaging of granular products
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