Lead is a blue-gray metal, new fracture has a brilliant metallic luster. The solid density is 11.35 g/cm3, the melting point is 327.4 degrees Celsius, the boiling point is 1525 degrees Celsius, pure lead is the softest in metal, and the Mohs hardness is 1.5. Lead has good malleability, but its ductility is very small and it is not resistant to tension. The thermal conductivity of lead is very poor, equivalent to 7.5% of silver , and the conductivity is also very poor, only 7.77% of silver.

Lead has a high degree of chemical stability and does not undergo chemical changes in dry air at ambient temperatures. Lead is easily soluble in dilute nitric acid, and lead is insoluble in sulfuric acid and hydrochloric acid at room temperature. At normal temperature, the action of hydrochloric acid and sulfuric acid only involves the surface of lead, and the formed PbC12 and PbSO4 are almost insoluble, and adhere to the surface of lead, so that the internal metal is not corroded. Lead does not react with alkali, nitrogen, chlorine containing solutions and organic acids and vinegar.

Because lead has the property of resisting acid and alkali corrosion, it is widely used. For example, it can be used to manufacture various components of chemical equipment, electrolytic cells of metallurgical factories, communication cable materials and batteries, etc., and can also be made into a babitite alloy. Lead-based alloy bearings; because lead can absorb radioactive rays, it is used in x-ray industry and atomic energy industry; lead compounds are used in industrial sectors such as pigments, ceramics, glass, rubber, petroleum refining, etc., and can also be used for soldering, printing, etc.

Kraft Paper Bag


Product Description

kraft paper bags can be made into a variety of bag types, such as self-supporting bags (also can add zippers), three-side sealing bags, bread side gusset bags, quad seal bags, spout pouch, etc.

The kraft paper bag inner layer is high quality plastic material, the middle layer is kraft paper covering, and the outer layer is PET or BOPP covering.

Kraft paper pouches are provides the ultimate barrier protection against UV lighting, moisture, and oxygen. These Kraft foil pouches have different layer construction, such as Paper, AL, LLDPE, etc., and coupled with high barrier characteristics, ensures that your product will experience extended shelf life.

And we can suggest more suitable materials for you according to your products. What are you waiting for? Come and contact us!

Features

• Easy usage and lightweight

• Moisture and gas barrier properties

• Great natural look and particularly suited certain products

• Allows for high impact graphic design and printing.

• Can include a variety of special features such re-sealable closures, tear notches, hanging options etc.

• Environment friendly material

Application

Food industry, like candies, pineapple cake, etc., any snack food, nuts, jerky, bread,cereals & grains, coffee & tea, or pet food.


Kraft Paper Bag,Printed Bread Bag,Kraft Pouch Stand Up,Tea Bag Kraft Paper Bag

Guangdong Danqing Printing Co., Ltd. , https://www.spoutpouchfactory.com