There are two ways for paper sizing, one is in front of the sheet forming (beating or ingredients) add sizing agent in pulp called intracytoplasmic sizing, another is in sheet forming after coating on paper or cardboard surface is called the surface glue.The sizing agent of pulp is mainly rosin sizing agent, synthetic sizing agent, paraffin sizing agent and neutral sizing agent.Surface sizing agent and neutral sizing agent.Surface sizing is mainly to improve the smoothness of the surface of the paper, reduce the porosity and prevent the surface hair and hair loss.The more used is modified and unmodified starch, and the PVA is also used.Other products include paraffin emulsion, animal glue, carboxymethyl cellulose, polyurethane, styrene-maleic anhydride copolymer, acrylate copolymer, dihydroxy fatty acid compound, etc. Paper Sizing Agent,Sizing Agent For Paper,Paper Surface Sizing Agent,Papermaking AKD Surface Sizing Agent Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com
1. Selection and Site Preparation: Choose fertile, loose, well-drained plots. Cuttings and nursery land still need to be watered to facilitate irrigation, planting sites to select high-desert dry place. According to the original fertility of the land, basal fertilization and tillering of crops were made to be widths of 1 to 1.2 meters and heights of 25 to 30 centimeters, with a 30-centimeter gap. 2. Propagation methods: (1) Root-separation method: After harvesting chrysanthemums, select robust plants, cut off the remaining stems, and cover them with horse dung or earth miscellaneous fertilizers to keep warm for overwintering so that the root buds will spring early. After the new seedlings germinate in March-April of Hunchun, the covered manure is split and accelerated. From late April to early May, when the seedling height is about 20 centimeters, all of them will be excavated and new seedlings will be planted. The burrows were lined with 50 cm spacing, 30 cm spacing, and 10 cm deep digging. Each branch was implanted with 1-2 seedlings, and the soil was compacted. (2) Cutting method: The mother plant of the selected species and the overwintering method are the same as the rooting method. When the seedling height is 15-20 centimeters in the late April, it is cut off along the ground. From the middle, a thick seedling with a length of more than 10 cm is selected, the lowermost 2-3 leaves are removed, and the planting distance is 77 cm. Moisturizing and shading, new roots can be produced in about 20 days, and two new leaves can be transplanted after the cuttings are transplanted. The transplanting method is the same as the partial rooting method. 3. Field management: (1) Weeding and weeding; after planting, see no wilting phenomenon in the afternoon, the seedlings have survived and can start loosening and weeding. It usually takes 3-4 times, and it will not be performed after budding. The mid-term herbicides were treated with Shuangcao Ke. See the instructions for use. (2) Dressing: When the plants grow vigorously after planting, apply about 1000 kg of thin and thin waste water; when the pregnant buds begin, apply the above-mentioned fertilizer 2000 kg, and apply another superphosphate 10-15 kg or spray with 2% superphosphate water. Foliage top dressing. (3) Drainage and Irrigation: After the planting, the plants need to be watered early and kept moist to increase the survival rate. After the survival, the soil needs to be dry, promote the development of the root system, and control the leggy of the aboveground parts. At this time, it is necessary to drain water and reduce humidity in case of rain. (4) Topping: After colonization and survival, when the seedling height is 15-20 cm, select the sunny top, remove the stem tip 1-2 cm, and promote branching. Thereafter every 2 weeks, once for 3-4 times in succession, it will not be carried out after the end of July. Otherwise, the branches will be too much and the flowers will be too small. (5) Pest control: Leaf blight: also known as spot blight. Pathogens are a kind of semi-known bacteria that can occur in various stages of growth and are severe in rainy seasons. The first leaf of the lower part of the disease, diseased leaves appear near-round purple brown spots, the center gray. There was a small black spot on the late lesions (branch device). After the lesions are enlarged, the whole leaf is dry (not falling off). Control methods: control the moisture in the early growth stage to prevent madness from taking advantage of ventilation; timely drainage after rain, reduce soil moisture, early stage of disease, timely removal of diseased leaves, centralized burning and use of 1:100 Bordeaux mixture or 50% mancozeb 800- l00O times liquid spray. Locust: It began to occur in late April. It can be sprayed with 40% Dimethoate EC 200 times spray or 25% Zocorin 1500-2000 times liquid spray. 4. Harvest processing: The flowering period of chrysanthemum is about 20 days. It is generally more concentrated in early November. Should be harvested in batches, with the best harvest period when the flower heart (tubular flower) is open at 2/3. Fully open flowers not only have aromas, but also are easy to disperse after processing and have poor color. At the time of harvest, the branch where Hua Lian is to be cut off or cut off from the decentralized office and tied into a small handle to facilitate dryness; or to cut the flower head directly. Then processing. Processing methods are dried, dried, dried and so on. (1) Dry: In the first half of November, when most of the flowers were in the proper collection period, they chose to cut off the florets in the afternoon on sunny days. After 2-3 cuts were completed, the racks were dried up. Cut dry flowers after they are dry, which means they are finished products. The well-known few chrysanthemums are dry products. (2) Sun: The harvested flowers will be dried on the shelf for 1-2 months. Cut flowers and spray 2-4 kg of water per 100 kilograms. After evenly moistening, sulfur will be smoked for about 8 hours per 100 kilograms. Chrysanthemum uses 2 kilograms of sulphur for disinfection and bleaching. Slightly dry after smoking is the finished product. After harvesting, it is also possible to smoke sulphur with flowers and dry it after sun exposure. Former exams such as Huaihua Chrysanthemum, the latter such as Chrysanthemum Chrysanthemum and Chrysanthemum The famous Huai Ju, Qi Ju, and Chuan Ju are all of their products. (3) Steam drying: Place the harvested fresh chrysanthemums in a steamer (about 3 cm in thickness) and steam for 4-5 minutes. Take out and put on the bamboo screen to expose to the sun. Do not flip. 3 days after the sun can be turned 1 times, drying 6-7 days, the heap back to run l? 2 days, and then l-2 days of drying, paternity is completely hard to dry, can be finished. Chrysanthemum is the sun drying products. (4) Baking: The fresh chrysanthemum is placed on the bamboo curtain of the barn (or placed in a baking sieve and placed on a fire bowl), with a thickness of 3-5 cm, baked at a temperature of about 60°C, and flipped once when it is half dry, 90% When dry, remove the sun and dry it until it is dry. Gongju is a baked product. The above several processing methods, the drying method is the best, dry fast, good quality, high dry rate, generally 5 kilograms of flowers can process 1 kilogram of dry goods. Chrysanthemums produce 100-150 kilograms of dry goods. In order to complete inflorescence, dry, bright colors, fresh fragrance, no stem leaves, broken flaps, no mildew is better.