Knowledge of paper food packaging industry

Paper raw material knowledge, share to the customer can choose paper, white cardboard, white cardboard strength thick, have higher stiffness and smoothness, paper formation, the thickness of the commonly used is 210 - 300 grams of white cardboard, use most is 250 grams of white card. Printed with white paper, full color, the texture of paper is also very good, is the first choice for your custom. Grey board: grey board is a kind of positive white and smooth, the back is grey board, more commonly used thickness is 250 grams to 350 grams, one side is white, grey board side is gray, white cardboard relatively cheaper price. Features a bond: bond paper, very bright and clean level off, high whiteness, high smoothness, glossiness is good, also make printed graphics, images have stereo feeling, the thickness of the common g - 128 300 grams, bond paper printing and the effect of white cardboard, color full bright, compared with white cardboard, less than the stiffness of the white cardboard. White kraft paper, white kraft paper, burst degree is high, good toughness, high strength, evenness thickness as stability of color, specifications and control of plastics pollution in accordance with relevant state regulations, plastic bags will be environmental protection bags instead of, white kraft paper, market prospects look good. 100% pure wood pulp manufacturing, environmental non-toxic, can be recycled, environmental white kraft paper toughness is very good, and need not coated, widely used in making environmental protection clothing bag, upscale shopping bags, etc. The thickness of the commonly used 120 grams to 200 grams of white kraft paper, paper no brightness and luster, white kraft paper is not suitable for the content of the printing ink is too big. White kraft paper, whether domestic or imported is 100% total kraft wood pulp, waste do not white, but the white kraft paper, compared with other paper prices much higher, so it would cost more for white kraft paper bags. Unbleached kraft paper ( The yellow kraft paper) : kraft paper, has the very high tension, high intensity, usually tan, tear strength, bursting work and dynamic strength is high, it is widely used in shopping bags, envelopes, etc. There are 120 g - the thickness of the commonly used 300 grams of unbleached kraft paper, kraft paper, general suitable for printing of contributions for the single color or double color and color not complex, relative to the white paper, white kraft paper and bond paper, kraft paper, the lowest price. Black cardboard: black cardboard paper is exquisite, is the feature of scorpion, strength thick, folding degree good, surface level off is smooth, good stiffness, good tensile, burst degrees higher, the thickness of the common g - 120 350 grams of black paper, because the black cardboard inside and outside is black, so can't print color pattern, is only suitable for bronzing, hot silver, etc. , make the bag is very beautiful, oh. Specific reference sheet.