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Materials forming and processing technology is an important professional course in the undergraduate curriculum system of packaging engineering major. Based on the teaching requirements of the training program for undergraduate students of packaging engineering major in Beijing Institute of Graphic Communication, this paper constructs the knowledge network of the course with selected knowledge units and knowledge points and optimizes the teaching content. In the course teaching practice, multimedia teaching, inductive teaching, case study teaching, and other teaching methods are adopted to help students construct knowledge and develop skills. The course teaching can better meet the needs of discipline and specialty construction.

Recognition to evaluation indicators forms the linchpin for the study or preparation of major evaluation. This dissertation has compared current major evaluation indicator systems in various colleges to extract key elements, carried out concrete analysis towards the specific evaluation practice of packaging engineering major, and provided reference and suggestion on the approaches to facilitate major development with appropriate evaluation system and conduct day-to-day routines like teaching and researching activities in a well-targeted manner.

The construction of innovation and entrepreneurship education system of packaging engineering is a systematic project. After analyzing the problems and current situation of innovation and entrepreneurship education in Beijing institute of graphic communication (BIGC), it is put forward that the construction of innovation and entrepreneurship education system of packaging engineering in BIGC include atmosphere building, training of teacher, combination of subject and specialty, combination of regional advantages, combination of specialty characteristics, combination of professional education and quality education, combination of curriculum construction and curriculum system, platform construction and other aspects in this paper. The object should train innovative and entrepreneurial packaging talents.

Based on the analysis of the development basis and achievement of packaging engineering in Beijing Institute of Graphic Communication (BIGC), the guiding ideology and goals are defined, the construction plan of packaging engineering in BIGC is put forward. Through the construction of packaging engineering, its characteristics and feature of "the combination of packaging technology and intelligent technology" and "the combination of packaging system design and art design" will be outstanding further, become the leader in the whole china and even in the world.

The training mode of undergraduate for packaging engineering is explored and practiced usefully in Beijing Institute of Graphic Communication (BIGC). Packaging engineering has developed practical training program and teaching mode for packaging engineering has been developed, and the training mode of "double training plan" and innovative business has been practiced and achieved. Undergraduate has grasped the theoretical knowledge firmly, owns the professional and practical skills of analytical problems and resolution problems, and enhance comprehensive quality of working in printing and packaging industry.

According to the characteristics and training objectives of packaging engineering, this paper analyzes the it’s training mode of Beijing Institute of Graphic Communication on the theme of "Individualized, classification training", which highlighting the professional characteristics of packaging engineering and providing reference for the reform of training mode of packaging engineering in China.

On the base of the former research of mercerization of pulp fibers, SEM, XRD and Automated Surface Area & Pore Size Analyzer were used to characterize surface morphology, crystalline property, and specific surface area and the pore size distribution of fibers. The results show that the fiber cell wall swelling, degree of crystallinity decrease and specific surface area and pore size distribution increase after mercerization.

Effects of mercerizing treatment on water-retention value of bleaching coniferous wood pulp fibers were discussed and the mercerizing treatment conditions were optimized. The best conditions of mercerizing treatment is NaOH concentration of 7mol/L, temperature of 40°C and processing time of 100min. SEM showed that the fiber cell wall swelling increase after mercerization.

Effects of ultrasonic processing conditions on water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber were discussed. Results showed that ultrasonic power and processing time have an significant impact on water retention value of three kinds of pulp, the effort of ultrasonic treatment temperature on water retention value of three kinds of pulp is less. The water retention value of bleaching coniferous wood pulp fibers, absorbent cotton pulp fiber and straw pulp fiber, respectively, reach the maximum at power of 300W, 500W, 400W, and processing time of 60min, 120min, 60min.

SEM and Automated Surface Area & Pore Size Analyzer were used to characterize surface morphology and specific surface area and the pore size distribution of fibers. The results showed that specific surface area and pore size distribution increase after ultrasonication. The ash content of the composites of ultrasonic treated fiber is larger than the untreated fiber, and the magnetic properties show a good superparamagnetic behavior.

The curriculum construction is a very important work leading to the excellent course. Processing Technology of Paper Box and Carton (including 32 class hours) is a new elective course to the printing engineering in our college. It is very important and necessary to construct the course in time. At first, the current states and difficulties were introduced in the paper, which was that teaching contents, teaching courseware and teacher team should be all improved. Especially, the teaching content proportion on both paper box and carton was set. And then the ideas and ways used for building up the curriculum system are presented as integrating the teaching contents, reforming the teaching mode and strengthening the teaching management. Finally, the significance of carrying out the teaching reform was put forward, and the achievements of course construction should be applied to the usual teaching work. The curriculum Processing Technology of Paper Box and Carton was reckoned as the excellent curriculum of Beijing Institute of Graphic Communication in 2013.

Paper surface efficiency (PSE), a paper property integrating gloss and absorbency, can be used to evaluate color reproduction after the interaction of paper and ink. But it was shown that the color reproduction was still related to paper whiteness in practice. In this paper, an assumed PSE formula which integrates gloss, whiteness and ink absorbency is firstly presented, and according to experimental data, it can be well forecasted that the change of these principal paper properties would affect color reproduction result via the new PSE formula. The linear relationships between new PSE formula and ink color reproduction based the description of photo-density measurement were studied subsequently. The results showed that new PSE formula can be used to predict effectively ink color effect.

The X-ray diffraction of hydrated calcium silicate is analyzed and is applied in papermaking. It shows that hydrated calcium silicate have certain crystalline state. The tensile strength, tearing strength and folding strength of paper decrease in different degree with the increase of dosage of hydrated calcium silicate while the whiteness and the printing color density of paper improve. T tensile strength and folding strength of paper decrease in varying degrees with the increase of dosage of PAM while the tearing strength of paper and the whiteness improve. And the printing color density of paper is the same.

In order to study the preparation and property of the multi layer composite paperboard, bleached wheat straw pulp, bleached chemical thermal mechanical pulp and waste newsprint pulp are used as raw materials to making paperboard. The results show that the bonding force between fibers of grasses chemical pulp is strong which can improve the bonding strength between the layers. Bleached wheat straw pulp is used as outer layer and waste news paper pulp is used as inner layer to make composite paperboard has high physical properties. Bleached chemical thermal mechanical pulp fiber is shorter, so paperboard tightness and physical strength reduce, which can be used as the lining of the multi layer composite paperboard to improve the stiffness of the paperboard and reduce the cost.

The effects of different kinds of pulp on structure and packaging mechanical properties of composite board. The results show that in order to obtain maximum ring crush strength of composite board, in the forming process of composite board, wheat straw pulp is used as outer layer because it has strong bonding force and higher fibrosis degree. Waste news paper pulp is used as inner layer because its cost is low.

The application of hydrated calcium silicate as filler in paper from wheat straw pulp is studied in this paper. It shows that that with the increase of dosage of hydrated calcium silicate, the stiffness of paper improves, and the whiteness and the printing color density of paper improve, but the tightness and tensile strength of paper decrease. When the dosage of CPAM is 0.45 g/kg, the tightness, tensile strength, tearing index, whiteness and printing color density reach the large value. Paper ash content increased with the increase of amount of hydrated calcium silicate, but paper ash gains is not big after the dosage of hydrated calcium silicate reaches 20%.

Effects of ultrasonic treatment on water-retention value of straw pulp fibers were discussed and the ultrasonic treatment conditions were optimized. The best conditions of ultrasonic treatment as follows: ultrasonic power is 400W, processing time is 90min and temperature is 40°C. SEM shows that a large number of magnetic particles were left inside the pulp fiber cells. Automated Surface Area & Pore Size Analyzer shows a good superparamagnetic behavior.

Material forming and processing course is a master's degree course and a required course for materials processing engineering. The construction and practice of materials forming and processing from teaching outline, teaching content, teaching methods and innovative practice has achieved good results.

The teaching and practice for polymer material forming and processing improves the theory teaching and practice teaching highly. The extracurricular investigation is the supplement and promotion greatly to the theory teaching and practice teaching. The students’ participation in scientific research cultivates the students' professional skills and professional quality. The teaching results show that students are satisfied with the teaching process and gain the knowledge and skills. And the students are of the overall quality suit for engaged in forming and processing industry.

The curriculum construction is a very important work leading to the excellent course. Processing Technology of Paper Box and Carton (including 32 class hours) is a new elective course to the printing engineering in our college. It is very important and necessary to construct the course in time. At first, the current states and difficulties were introduced in the paper, which was that teaching contents, teaching courseware and teacher team should be all improved. Especially, the teaching content proportion on both paper box and carton was set. And then the ideas and ways used for building up the curriculum system are presented as integrating the teaching contents, reforming the teaching mode and strengthening the teaching management. Finally, the significance of carrying out the teaching reform was put forward, and the achievements of course construction should be applied to the usual teaching work.

Cationic polyacrylate emulsion was used as surface sizing agent and the effects of emulsion properties on paper mechanical properties were studied. The mechanical properties of sized paper gradually increased with the increase of solid content, viscosity and positive charge density of emulsion and decreased with the increase of particle size of emulsion. Tensile strength, folding endurance and tearing strength on machine direction were increased 33.62%, 11.99%, 6.79% respectively when the paper with single emulsion layer was used oven drying methods.

Cationic polyacrylate emulsion was used as surface sizing agent and the effects of emulsion properties on paper printability were studied. Cationic polyacrylate emulsion increases the printability of sized paper. The printability has greatly improved increase with the increase use of emulsion dosage, but the increase of emulsion viscosity influences the printing operation, and one layer of emulsion has already achieve the desired effect, therefore one layer of emulsion is properly.

In this paper amorphous silica powder properties are analyzed and studied. It shows that precipitated silica has larger specific surface area, higher absorption value, higher whiteness and lower bulk density. Different usage of amorphous silica has different properties and different particle size. The order of particle size is that precipitation silica for rubber is bigger than precipitated silica for filler, and the smallest is precipitated silica for coating. XRD, FTIR, SEM and TEM show that precipitated silica is amorphous silica which has wealthy hydroxyl and porous properties and chain branched structure.

In this paper the comparison among some papermaking powder properties are studied. It shows that the properties of different powders are different because of different chemical composition and different preparation method and their particle size is different for different purpose such as filler and pigment. The particle size of powder for pigment powder is smaller than that for filler. The specific surface area of papermaking filler is lower than 20m2/g, the absorption value of DBP is about 45cm3/100g, the whiteness is up to 90%, and the particle size is about 3µm. The specific surface area of papermaking pigment is lower than 25m2/g, the absorption value of DBP is from 40 cm3/100g to100cm3/100g, the whiteness of clay is up to 50%, the whiteness of GCC and PCC is up to 90%, and the particle size is lower than 2µm. The specific surface area of silica is up to 100m2/g, the absorption value of DBP is up to 100cm3/100g, the whiteness is up to 97%, and the particle size is around 5µm.

In is paper precipitated silica is used in coated paper coating. It shows that the effect of different silica on properties of pigment dispersion is different. The dosage of silica influences the properties of pigment dispersion too. The viscosity of coating is higher than the corresponding pigment dispersion. The higher the viscosity of pigment dispersion is, the higher the corresponding viscosity of coating is. The more the dosage of silica is and the littler the particle size of silica is, the larger water retention value of coating is. When the precipitated silica is used in coated paper coating, the viscosity of coating is increasing. If precipitated silica coat paper, the whiteness of coated paper increases by 1%-2%

In this paper silica are made in the production line and its properties are investigated. It shows that the content of SiO2 of BSZ1 is 90.24%, its specific surface area of BET is 204.70m2/g, its CTAB is 240m2/g, its oil absorption value of DBP is 2.82cm3/g, and its particle size of D50 is 5.71μm. The content of SiO2 of BSZ2 is 94.16%, its specific surface area of BET is 245.07m2/g, its CTAB is 212m2/g, its oil absorption value of DBP is 2.86cm3/g, and its particle size of D50 is 2.82μm. The content of SiO2 of BSZ3 is 92.43%, its specific surface area of BET is 355.90m2/g, its CTAB is 273m2/g, its oil absorption value of DBP is 2.70cm3/g, and its particle size D50 is 5.71μm. BSZ2 and BSZ3 are amorphous state with silanol groups on their surfaces, and they are the spherical particle with some irregular granules. BSZ1 and BSZ2 are good application in rubber as reinforcing agent.

Polyvinyl alcohol (PVA) is a kind of biodegradable film material, and its degradation process is mainly done through PVA-degrading enzymes, but the film biodegradation cycle is longer, so it needs other polymers with favorable biodegradability to improve the degradation rate in the nature environment. In this paper the biodegradation mechanism of PVA films and the influence of structural feature on biodegradability were described. The research development of starch-based biodegradable PVA films by blending starch to reduce the biodegradation cycle was emphasized and the biodegradable films modified by chitosan to improve film properties was briefly described.

Paper industry is one of the major environmental pollution industries in china, pulp and paper industry wastewater discharge amount is from 10% to 12% of the national total wastewater discharge amount. Cationic starch graft copolymer was prepared in laboratory and used to treat papermaking wastewater. The effects of its cationic degree, dosage, flocculation temperature, flocculation time and the combination with alum on papermaking wastewater treatment were investigated. It was found that the best flocculation in the treatment of papermaking wastewater is achieved when cationic degree of cationic starch graft copolymer is 27.38%, adding amount is 15mL, flocculation temperature is 50°C and the mass ratio of alum to cationic starch graft copolymer is 2: 1. The flocculation of composite flocculant made up with alum to cationic starch graft copolymer to papermaking wastewater is much better than only cationic starch graft copolymer is used.

Corn starch, acrylamide and diallyl dimethyl ammonium were used as the raw materials and ammonium persulfate as initiator, cationic starch graft copolymer was prepared, and then the prepared cationic starch graft copolymer is applied to flocculate wastewater from bleaching. The results show that The flocculation of cationic starch graft copolymer to wastewater from increases first and then decreases after the reach of the peak with the increase of the cationic degree of the cationic starch graft copolymer, addition amount, flocculating temperature and flocculating time. When the cationic degree of the cationic starch graft copolymer is 27.38%, the addition amount is 7.5%, the flocculating temperature is 50°C and the flocculating time is 30min, the flocculation of cationic starch graft copolymer to wastewater is the best. The flocculation of alum/cationic starch graft copolymer is better than cationic starch graft copolymer is used only. Introduction

In this paper, super absorbent polymer was prepared through graft copolymerization by cellulose and acrylic acid (AA), acrylamide (AM), and butyl methacrylate (BMA) and its properties were determined. It showed that optimum reaction condition is the amount of cellulose, AA, AM and BMA is 10g, 4.5g, 2g and 1.5g respectively, the amount of initiator (potassium persulfate) and N,N'-methylene bisacrylamide is 0.01g and 0.012g, the pH value of AA after neutralization is 7. The water absorbency to distilled water, tap water and salt solution of super absorbent polymer which was prepared under these conditions is 770g/g, 113g/g and 86g/g respectively. The water retention rate of super absorbent polymer gel drops to 3% needs 130 hours under natural condition. It was expected that super absorbent polymer can be used for preservation processing of fruits.

AKD is an important internal size for paper pulp fiber. With recycled economy development, regenerated paper fiber becomes an important resource. In this paper, AKD is used as a modification aid by internal sizing method. It shows that the change of the dosage of AKD influences regenerated paper fiber Cobb value, but has no influence to paper surface strength. The proper pH value is from 7 to 9. The temperature has no influence to regenerated paper fiber Cobb value and paper surface strength. Appropriate modified starch is good for AKD modification fiber and increase of the surface strength of paper made from modified fiber by AKD. Amphoteric starch is better than cationic starch. Other added substances such as PEI, MPEI and PAE can improve the modification of paper fiber modified by AKD. So the adsorption of modified paper fiber decrease and the surface strength of paper modified fiber increase.

It is study that graft modification of waste newspaper pulp fiber. Grafting rate of waste newsprint pulp increases with increasing initiator dosage, DADMAC dosage, reaction temperature and pulp consistency. When those conditions reach a certain value, grafting rate will lower, but the reducing speed is different. The optimal conditions of waste newsprint pulp modification is the initiator dosage is 8%, mole rate of cationic monomer in total monomers is 60%, reaction temperature is 50°C and reaction time is 2h. Grafting rate of waste newsprint pulp is 15.89% under these conditions.

The application of nanosilica in coating of art paper and ink-jet paper is studied. The results show that when nanosilica is used in art paper coating, the dispersity and flowability of the art paper coating are excellent. The surface strength, smoothness and gloss of the paper coated with art paper coating with nanosilica are improved and its yellowing rate is decreased. When nanosilica is used in ink-jet paper coating, the dispersity of prepared ink-jet paper coating is of better, the coated paperboard with ink-jet paper coating with nanosilica is of ink transfer larger, K&N value higher and whiteness higher. The smoothness and gloss of paperboard coated with ink-jet paper coating with silica are improved. The combination application of more kinds of adhesives improves the print gloss of paperboard coated with ink-jet paper coating with silica.

Cationic polyacrylate emulsion was prepared in lab by semi-continuous seed pre-emulsification process. After the single factor experiments, the orthogonal experiments were made to get the optimal polymerization processes. Through the single factor experiment and further the orthogonal experiment optimization, it shows that the sequence of the effect of these factors on the viscosity of emulsion is drop time > reaction time > reaction temperature. The sequence of the effect of these factors on the solid content of emulsion is drop time > reaction time > reaction temperature. The sequence of the effect of these factors on the conversion rate of emulsion is drop time > reaction time > reaction temperature. The obtained best polymerization processes are the drop time is 1.5h, the reaction time is 5h, the reaction temperature is 85 °C. Under the best polymerization processes, the properties of the emulsion are the solid content is 35.40%, the conversion rate is 96.33%, the viscosity is 456.67mPa.s, the particle size is 490.20nm, the Zeta potential is 30.50 mV and pH is 2.50.

Different degrees of high degree of substitution cationic starch (HCS) were prepared and applied in paper coating. Effects of HCS on coating properties and coated paper properties were investigated, and the comparison of effects of HCS and PDMDAAC was made. The results show that the best amount of HCS in coating formula is between 2% and 4%. When the amount of HCS is 4%, whiteness of coated paper was the highest. The color density was the highest when the amount of HCS is about 4% and the degree of substitution is 0.64. HCS with degree of substitution 0.849 is better than PDMDAAC in some respects, and the print image density achieved satisfactorily.

Strengthening agent of cationic polyacrylate emulsion was prepared through semi-continuous seeded pre-emulsion processes. By single factor experiment, investigated the factors which influence on properties of emulsion, such as the proportion of hard and soft segment monomer, the dosage of AM, DMDMAC, emulsifier and initiator, reaction time and temperature, addition time and other factors. The results show that the emulsion has a good enhancement when the monomer ratio of St: MMA: BA is 2:1:3, initiator dosage is 0.7%, the dosage of emulsifiers, AM and DMDMAC are 6%, the amount of protective colloid is 0.3%. Compared to the strength performance between paper with added emulsion and blank paper, find that the performance of paper with added emulsion polymer gets different improves: paper quantitative increase 4.08%, folding strength degree improves 66.67%, tearing degree improves 356.52%, ring compressive strength improves 50.00%, tensile strength improves 44.11%, and bursting strength improves 50.88%

Filler is one of the most important components of paper. Silica is a kind of excellent filler for its special chemical structure. Silica was prepared in the laboratory, and applied into paper. The dispersion properties of the silica with different sizes in paper sheets, the effect of smash on dispersion property of silica in paper sheets, the effect of silica on the zeta potential of newspaper pulp system, the effect of retention agent cationic polyacrylamide on zeta potential of newspaper pulp system and the effect of silica on properties of paper sheet were measured. The results show that the fineness of the silica used in paper is the most important factor which affects the dispersion. The addition of silica and the use of retention agent cationic polyacrylamide increase the zeta potential of the newspaper pulp system. The addition of precipitated silica increases the whiteness of paper slightly and the opacity obviously.

Silica was prepared by precipitation method in the laboratory, and the factors which affect the performance of silica were evaluated. The results show that the reduction of concentration of base solution and reaction temperature and the increase of pH value could improve the specific surface area of precipitation silica. Specific surface area of silica prepared in laboratory is greater than which was prepared in production line and DBP absorption value and particle size are smaller than the latter. Drying process and drying methods have important influences on performance of precipitation silica. Mechanical pulverization could reduce the particle size of silica slightly and the stacking density obviously.

Using sodium hydroxide as its alkali catalyzer, 3-chloro-2-hydroxypropyl trimethyl ammonium chloride as its quaternary agents, cationic starch with high degree of substitution was made by semi-dry process. The prepared cationic starch contains quaternary ammonium groups by the infrared spectrum analysis. From the scan electron microscope pictures of starch and cationic starch, cationic starch can be clearly seen to have substituted the quaternary ammonium salt groups and the structure of mutual penetration of flexible quaternary ammonium salt groups and rigid starch has formed. The tensile strength of paper improved by cationic starch with high degree of substitution is far more than that by cationic starch with low degree of substitution and poly diallyl dimethyl ammonium chloride. The scan electron microscope pictures of the surface and fracture of the paper show that the distribution of the paper fiber which added additives are apparently tight and uniform and there are many small fibers obtained on the surface of paper samples. The fibers of the paper sample which added additives have more fracture themselves and have less extraction entirely. It indicates that the force between fibers has been strengthened by cationic starch additive.

Paper surface efficiency (PSE), a paper property integrating gloss and absorbency, can be used to evaluate color reproduction after the interaction of paper and ink. But it was shown that the color reproduction was still related to paper whiteness in practice. So it is important to amend the PSE formula. In this paper, an assumed PSE formula which integrates gloss, whiteness and ink absorbency is firstly presented, and according to experimental data, it can be well forecasted that the change of these principal paper properties would affect color reproduction result via the new PSE formula. The data connection between the assumed and new PSE formula and ink color reproduction based the description of photo-density measurement and chromatic one was studied subsequently. The results showed that photo-density measurement was simpler and more practical than chromatic measurement.