Strong / Tough Brown Padded Envelopes , 235x330mm #H Air Bubble Envelope

Features:

Eco-friendly,no breaking,no fading,recyclable

It can be used to packing clothes, books,gifts,wears,Accessories and post tape, CD,Camera lens, film,

Multi-functions for mailing and packaging

Size can be customized,logo printing available,

Description:

Kraft bubble mailers or kraft is paper or paperboard (cardboard) produced from chemical pulp produced in the kraft process.

Sack Kraft bubble mailers, or just sack paper, is a porous Kraft bubble mailers with high elasticity and high tear resistance, designed for packaging products with high demands for strength and durability.

Pulp produced by the kraft process is stronger than that made by other pulping processes; acidic sulfite processes degrade cellulose more, leading to weaker fibers, and mechanical pulping processes leave most of the lignin with the fibers, whereas kraft pulping removes most of the lignin present originally in the wood. Low lignin is important to the resulting strength of the paper, as the hydrophobic nature of lignin interferes with the formation of the hydrogen bonds between cellulose (and hemicellulose) in the fibers.

Kraft pulp is darker than other wood pulps, but it can be bleached to make very white pulp. Fully bleached kraft pulp is used to make high quality paper where strength, whiteness and resistance to yellowing are important.

Speciallity

Kraft paper includes cardboard paper, cement bag paper, high strength corrugated paper, and tea cardboard. Kraft paper is a high strength packaging paper made from needles and kraft pulp, which is tough, strong and brown. It can be divided into single sided, double sided, striped and striped varieties. The quality requirements are slightly different. Kraft paper is mainly used to make small paper bags, file bags and internal packaging for industrial products, textiles and daily use. The kraft paper is divided into U, A and B3 grades.