3 results about "Offset printing" patented technology

The invention discloses a paper making method with pulp and a product of high-surface-intensity offset printing paper. The paper making method with the pulp comprises the steps that (1) multi-hole calcium silicate and mixed wood pulp fibers are subjected to mixing pulping, mixed pulp is obtained; (2) retention and drainage agents A, sizing agents and retention and drainage agents B are added into the mixed pulp in sequence, even stirring is carried out, papermaking pulp is obtained; (3) the papermaking pulp is subjected to papermaking, squeezing and drying, body paper is obtained; (4) surface sizing agents are used for carrying out surface sizing on the body paper, and the offset printing paper is obtained. The multi-hole calcium silicate is used as the papermaking padding, during a papermaking process, paper pulp / padding medium-high-concentration mixing pulping, CS / CPAM double-element retention and surface sizing agent formula improving and other measures are used, the padding retention rate is improved, paper intensity is effectively improved, and the waterproof performance, the oil resistance, the paper surface intensity, the tensile strength and other performance indexes of paper are obviously improved.

The invention discloses a partially-aluminized packaging film and a manufacturing method thereof. The partially-aluminized packaging film structurally comprises a transparent plastic film, an aluminizing layer and a printing ink layer, wherein the plastic film is made of any one material of OPP, BOPP and PET, and the aluminizing layer is provided with at least one opening. The manufacturing method of the partially-aluminized packaging film includes the following process of coating of a water-based complex adhesive, vacuum aluminizing, washing and printing, wherein any water-based complex adhesive for food packaging can serve as the water-based complex adhesive, and any of offset printing, intaglio printing and silk-screen printing can be adopted as the printing mode. The partially-aluminized packaging film has the advantages that the manufacturing process is simple, cost is low, and no pollution is generated.

The invention relates to printing rollers that are used in the dry offset printing industry. Presently there are no effective disposable printing rollers designed for use in printing presses used in the dry offset printing industry. The invention comes in different designs depending on the particular press involved. The invention can be manufactured and sold at a cost similar to the resurfacing costs of the present non-disposable printing rollers but is as structurally sound as a non-disposable printing roller. The invention provides the convenience of being disposable saving time and cost to the printer. The high administrative and logistic costs associated with resurfacing printing rollers are eliminated with the present invention. One need only use the disposable printing roller once and simply dispose of it once the roller is no longer useful.