In this paper the preparation of water soluble paper plastic lamination adhesive with acetate emulsion polymerization was studied,the best production technology was researched,and the effect of different kinds of action on adhesive properties were discussed.
Methods To monitor the sterilized sack of 3M paper plastics package in the home-made sphygmotomove vacuo high pressure steam sterilization cabinet,while studying the applicable methods of 3M paper plastic package.
Furthermore, simple application was made with this new kind of adhesive, which showed that its adhesive strength was enough for adhesion of paper and plastic film.
Methods To monitor the sterilized sack of 3M paper plastics package in the home-made sphygmotomove vacuo high pressure steam sterilization cabinet,while studying the applicable methods of 3M paper plastic package.
Results To kill bacteria by using 3M paper plastics package,the biochemical index reach the standard,the sterilization period of validity is above half year.
Meanwhile the modification mechanism of nano SiO2 to PVF adhesive and the applications of this adhesive in paper-plastic composite, concrete and fire-proof paint were discussed by using IR and XRD determination.
Compared with the results of an investigation in 1990, ash and woodchips content in 2003 declined from 56% to 17%, while the percentage of paper and plastic increased from 10% to 29% over the same period.
The experiments researched the effect of keeping fresh white mushroom with the irradiation of ~(60)Co r-rays,the controlled atmosphere(CA) and the chemical treatment,etc.The modified atmosphere(MA) appers to be the best method.Using MA method when packed in sealed paper-plastic bag and put in the natural inhibitor of peculiar smell,fresh white mushroom can be stored for 10—15 days in 5℃.The rate of cap opening and weight loss are respective lower than 3% and 2%;Moreover,the texture,odour and colour are basi...
Shiitake mushroom is one popular kind of edible fungi. At present, the fresh mushrooms are more welcomed than dry mushrooms. After harvest, gill browning, weight reducing and loss of natural deliciousness take place very easy. For prolonging the shelf life of fresh shiitake mushrooms, the packaging material, the methods of keeping fresh mushrooms and the relieving peculiar smell material were studied. The result showed that the gill browning, weight reducing, peculiar smell creating and texture lossing can ...
The changes of paper-plastic combined packing material (PP packing material) and single layered paper after 25 kGy ~(60)Co irradiation were compared experimentally. The results indicated that although the air permeability of the PP packing material somewhat increased and its tensile strength decreased after irradiation, its performance was still better than that of single layered paper. The experiment also showed that the PP packing material had advantages such as preventing penetration of bacteria, moistur...