An oyster paper and a manufacturing method thereof are provided. The oyster paper is made of 60%-70% oyster shell powder, 10%-20% polymer, 15%-17% natural biodegradation inducing agent, and 3%-5% natural biodegradation assisting additive agent, by volume ratio, which are subjected to mixing and pre-melting processing, followed by compounding and pelletizing to prepare oyster paper pellets, which are then subjected to film blowing processing to be film-blown into an oyster paper product having a thickness of 0.05-0.5 millimeters. The oyster paper possesses the quality of wood pulp paper and shows bettered stiffness and wider applications. The oyster paper also provides, after being disposed and buried, an effect of being 100% natural degradation into compost for fertilizing the soil. As such, a kind of oyster paper featuring recycling and reuse of oceanic creature waste shell and natural microorganism induced degradation for composting and recycling and a manufacturing method thereof are provided.

A coating slip including at least one pigment, water and: between 30% and 90% by weight of dextrin (A) of at least one dextrin having a weight-average molecular weight M.sub.A of less than 500 kDa; between 10% and 70% by weight of dextrin (B) of at least one dextrin having a weight-average molecular weight M.sub.B; the weight amounts of dextrins being relative to the total amount of the mixture of dextrins (A) and (B) in the composition, characterized in that M.sub.B is greater than M.sub.A+50 kDa. Also, a process for coating paper including a step of coating with this slip, and also to the paper obtained at the end of this process.

A coating slip including at least one pigment, water and: between 30% and 90% by weight of dextrin (A) of at least one dextrin having a weight-average molecular weight M.sub.A of less than 500 kDa; between 10% and 70% by weight of dextrin (B) of at least one dextrin having a weight-average molecular weight M.sub.B; the weight amounts of dextrins being relative to the total amount of the mixture of dextrins (A) and (B) in the composition, characterized in that M.sub.B is greater than M.sub.A+50 kDa. Also, a process for coating paper including a step of coating with this slip, and also to the paper obtained at the end of this process.

The present invention provides a process for producing paper or board, comprising slushing a stock of dried fibres in a slushing system comprising a pulper, and/or feeding a stock of never-dried fibres in a fiber line of an integrated paper mill; deflaking and/or refining the stock in a deflaker and/or a refiner, optionally diluting the deflaked and/or refined stock, directing the deflaked and/or refined stock to a headbox, forming a web, and drying the web, wherein a polymeric paper making additive is added to one or more of the stocks of dried fibres and never-dried fibres before deflaking and/or refining of the stock. The present invention further provides paper and board with improved properties.

The present invention relates generally to biocomposite materials made of cellulose and wheat bran and/or oat husk, prepared by methods comprising mixing the husk or bran with an aqueous alkaline solution, stirring and/or homogenizing the mixture, admixing with cellulose pulp and thermoforming the material under conditions admitting curing, thereby obtaining improvements in strength measured as at least one of strain at peak (%), stress at peak (%) and Young's modulus (MPa).

Disclosed are multi-ply tissue products comprising a non-crosslinked binder that are durable, smooth and with low levels of Slough. In certain instances the creped tissue product have a geometric mean tensile (GMT) from about 700 to about 1,500 g/3″ a basis weight from about 45 to about 60 gsm and a Slough less than about 2.00 mg, more preferably less than about 1.50 mg, such as from about 0.10 to about 2.00, such as from about 0.25 to about 1.50 mg. The inventive tissue products also have good durability, such as a Durability Index from about 10.0 to about 20.0, smooth surfaces, such as a TS750 value from about 15.0 to 40.0 and low stiffness, such as a Stiffness Index less than about 10.0.

Disclosed are multi-ply tissue products comprising a non-crosslinked binder that are durable, smooth and with low levels of Slough. In certain instances the creped tissue product have a geometric mean tensile (GMT) from about 700 to about 1,500 g/3″ a basis weight from about 45 to about 60 gsm and a Slough less than about 2.00 mg, more preferably less than about 1.50 mg, such as from about 0.10 to about 2.00, such as from about 0.25 to about 1.50 mg. The inventive tissue products also have good durability, such as a Durability Index from about 10.0 to about 20.0, smooth surfaces, such as a TS750 value from about 15.0 to 40.0 and low stiffness, such as a Stiffness Index less than about 10.0.

A composite includes a fiber and a dextrin, wherein at least part of the dextrin adheres to the fiber, and the dextrin has a DE value of 0.25 or more and 3.60 or less.

A composite includes a fiber and a dextrin, wherein at least part of the dextrin adheres to the fiber, and the dextrin has a DE value of 0.25 or more and 3.60 or less.

A composite includes a fiber and a dextrin, wherein at least part of the dextrin adheres to the fiber, the molecular weight distribution curve of the dextrin has a first maximum and a second maximum, the weight average molecular weight value based on a peak belonging to the first maximum is less than 6000, and the weight average molecular weight value based on a peak belonging to the second maximum is 6000 or more.