Secuity and Virgin Wholesale Bleached Hardwood Pulp for Packing Paper

Overview

Quick Details
Material: Hardwood Pulp                                                            Pulp Style: Virgin
Place of Origin: Shandong, China                                              Pulping Type: Chemistry - Materials Pulp
Bleaching: Bleached                                                                   Feature: Environmental Friendly
Apply: All Goods                                                                         Finished Products: Packing Paper
Brand Name: Shandong Bestrong Group Co.,Ltd

Supply Ability
3,000-5,000 Ton/Tons per Month

Packing & Delivery
Packing Details: in bales or customized
Port: Qingdao Port

Production Description

Composition:
The major component of wood from a deciduous (hardwood) tree consists of libriform fibers. These are about 1 mm in length and about 20 micrometers in width. Wood from deciduous trees is a complicated mixture of these fibers, multicellular vessels (for transport of water from the roots), and other specialized cells. The kraft pulping method chemically dissolves the lignin, a natural phenolic resin that glues fibers together in wood. Kraft pulping yields fibers that tends to have superior bonding ability after they have been made flexible by the compression and shearing action of a refiner. The down side is that kraft pulping may remove more that half of the original mass of wood. By contrast semi-chemical hardwood pulps are cooked under conditions that solubilize only a fraction of the lignin. Some mechanical refining is needed after the semi-chemical cook to liberate fibers from the softened chips. Two such processes are the carbonate cook and neutral-sulfite semi-chemical (NSSC). Because lignin is stiff, these pulps behave differently. Also, the high content of lignin and extractable materials such as fatty acids contributes to a higher density of anionic surface charge of semichemical fibers, compared to most kraft pulps.

Function:
Hardwood fibers are especially suited for producing smooth papers for printing and writing. They also can achieve good stiffness and bulking ability, but this depends on the tree species and refining conditions. Hardwood pulps also tend to produce paper products with more uniform formation, compared to softwood fibers.

Strategies for Use:
Papermakers are well aware that different blends of fiber types make sense for different grades of paper. If one wishes to manufacture paper bags it would be foolish to consider using hardwood pulps; they simply would not have enough resistance to tearing. On the other hand, if one wishes to make fine writing papers, it would be foolish to consider 100% of the relatively large southern softwood fibers. The sheet would be too rough and too porous. But wait - if one were to use no softwood fiber at all in making that same writing grade, then it is quite likely that the web will be too weak to run efficiently on your paper machine. One of the most interesting cases to consider is that of the common corrugated box. The flat layers (the "linerboard") are made from unbleached softwood kraft pulp to maximize resistance to edge-wide compression failure. However the interior corrugated or fluted part (the "medium") is usually made out of high-yield hardwood semi-chemical pulp. The relative high content of lignin in such fibers means that they will be stiff enough to play their essential role in keeping the two liners spaced at an optimum distance for strength. When two fiber types are to be blended, it is often the case that the best overall mix of properties can be achieved by separate refining of each type. For example, most softwood pulp can benefit from much greater refining energy input, compared to hardwood. Over-refining tends to reduce fiber strength greatly and produce fines that impede dewatering from the paper.



Product Parameter

Optical PropertiesResponse to PFI Laboratory Refining:
Refining CurveTypical Range of Properties at 30⁰SR

Company information

Business Type: Trading Company
Main Products: Bamboo Pulp, Wheat Straw Pulp, Bagasse Pulp
Country/Region: Shandong, China
Year Established: 2015

Shan Dong Pulp and Paper Science and technology group owns 6 domestic branches and 2 overseas branches. Our main industries include  papermaking, mechanics, fiber and fibrin and chemical industry, and we also manage the import and export of commodities and technology. We insist the principle of "Users first, credit supreme"to serve our customers home and abroad comprehensively sincerely and efficiently. We make great efforts to achieve our goal of "technicalization, corporation and internationalization" to totally undertake our responsibility for the society.

Packing & Delivery


Completed Service System

Regardless of pre-sale, in-sale, after-sale, we will provide the relative technology documents for free within 24 hours as long as you need assistance and enquiry about the equipments and technology. After the good is successfully transported to the buyers, we will be responsible for giving regular help to yours. During the transaction, We will provide after-sales service to the buyer at the fastest speed and solve the customer's problems in time.