包装盒专业英语学习教案.pptx
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1、会计学1包装盒专业英语包装盒专业英语PPT课件课件第一页,共39页。第1页/共39页第二页,共39页。 Linerboard (flat facing) Medium (fluted wavy) 第2页/共39页第三页,共39页。b. Single Wall (Double Face)one medium two liner boards a. Single Face one medium one liner board (for protective wrapping)第3页/共39页第四页,共39页。c. Double Walltwo mediums three liner boardsd
2、. Triple Wall three mediums four liner boardsDirection: Machine Direction Cross Direction -flute direction动画动画第4页/共39页第五页,共39页。3. Flutes Profile: arches with proper curve- the strongest way to span space Flutes as arches- resist bending and pressure, support weight, as cushion. Proper curve: between
3、 U and V (Also has its advantages) Flutes also as a insulator to protect sudden temperature changes Vertical linerboard provides strength; protects from damage. Several standard shapes (A,B,C,E,F) , Contrast:A-flute - the largest profileB-flute -smaller than AC-flute -between A and BE-flute - smalle
4、r than B F-flute - micro-flute New flute-Macro-flute第5页/共39页第六页,共39页。 Standard flute configurations Flute Flutes/ m Flutes/ ft Thickness * Factor A 100120 3036 4.67 mm 1.54 B 145165 4450 2.46 mm 1.32 C 120140 3642 3.63 mm 1.42 E 280310 8694 1.19 mm 1.27 *Not including facings; 1foot = 0.3047999m “Ta
5、ke-up factor” is the length of medium per length of finished corrugated board Described: the component of grammage or basis weight, from outside to inside eg. corrugated board “205/127C/161”-Outside liner = 205grams; Medium = 127 grams, formed to C-flute; Inside liner = 161grams第6页/共39页第七页,共39页。Gram
6、mage: the mass in grams per square meter. Basis weight: the weight in pounds per 1,000 square feet ( abbreviated lb/MSF).The most commonly used corrugating medium weights Grammage/g Basis Weight/b127 26147301613319540 Meterial : Linerboard - natural kraft ;Solid bleached white kraft ; Mottled white
7、; Oyserboard Linerboard with a whiter surface provide better graphics. Recycled or secondary fiber -producing both two components Recycled board -smoother surface finish ;low CoF; excellent printing surface.第7页/共39页第八页,共39页。 The most commonly used linerboard grades, based on Mullen burst test gradin
8、g. North American Grades European Grades Grammage Basis Weight Grammage 127g 26b 125g 161g 33b 150g 186g 38b - 205g 42b 200g - - 225g - - 250g 337g 69b 300g Other grades - 400g - - 440g 1 kg = 2.2046 b 1 meter = 3.28084 foot 1 g/m2 = 0.205 b/MSFA generation of newer linerboards has high-performance
9、boards, meeting ECT rather than Mullen burst test and basis weight requirements.lighter grades of the high-performance boards to get satisfactory performance第8页/共39页第九页,共39页。The corrugating machine forms the medium into a fluted pattern and bonds it to the linerboard facings , usually with a starch-
10、based adhesive1) A starch-based adhesive applied at about 10 to 14 grams per square meter.2) Requirements : not tolerant high moisture and loses strength quickly.3) When higher resistance is needed, starches can be modified or supplemented by the addition of various polymeric materials. 4) Weather-r
11、esistant adhesive would maintain box properties at a somewhat higher level for a longer period. 5) Water-resistant adhesive would be required for those applications where the finished container will be in actual contact with water for periods of time, and the coating or waxed should be treated第9页/共3
12、9页第十页,共39页。6. Broad ManufactureCorrugating machine is made up of a set of stations that take the appropriate linerboards and mediums, shape the flutes, join fluted medium to linerboards.Precondition medium with heat and steam Pretreated linerboards to the same temperature and moistureBrass fingers F
13、lute tips adhesiveThe single-facer of a corrugating machine is where the flutes are formed and bonded to the inside liner 第10页/共39页第十一页,共39页。Bridge -Draped in an overlapping wave pattern to the double-backer station Purpose-Isolating the two ends of the corrugating machine; balance; slow down The do
14、uble-backer section of corrugating machine where a second linerboard is applied to the single-faced material coming from the single-facer unit 第11页/共39页第十二页,共39页。第12页/共39页第十三页,共39页。 Most board tests are described in methods provided by TAPPI. Standard corrugated board burst and crush tests.1.Mullen
15、burst test (TAPPI T 810) Forcing a rubber diaphragm against the facing until it bursts第13页/共39页第十四页,共39页。第14页/共39页第十五页,共39页。6. Gurley Porosity (TAPPI T 460 and T 536) Measures the time it takes for a given volume of air to pass through a paper. The lower the number, the more porous the paper. The po
16、rosity of paper is sometimes the culprit when problems occur at vacuum-cup transfer points. 7.Flexural Stiffness (TAPPI T 820) Rrelated to box compression strength. Reduced stiffness is a good indicator of damage during fabrication. 8.Water Take-up Tests (TAPPI T 441) The Cobb size test, measures th
17、e amount of water absorbed by the facing in a given time, used to measure water absorption for materials specified to be used for hazardous product containers第15页/共39页第十六页,共39页。第16页/共39页第十七页,共39页。use a carrier classification and C-flute as good starting points.Characteristic A-Flute* B-Flute C-Flute
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