flip-top (adj.)youdaoicibaDictYouDict[flip-top 词源字典]
1955, of product packaging, from flip (v.) + top (n.1).[flip-top etymology, flip-top origin, 英语词源]
foam (n.)youdaoicibaDictYouDict
Middle English fom, fome (c. 1300), from Old English fam "foam, saliva froth; sea," from West Germanic *faimo- (cognates: Old High German veim, German Feim), from PIE root *(s)poi-mo- "foam, froth" (cognates: Sanskrit phenah; Latin pumex "pumice," spuma "foam;" Old Church Slavonic pena "foam;" Lithuanian spaine "a streak of foam"). The plastic variety used in packaging, etc., so called from 1937.
generic (adj.)youdaoicibaDictYouDict
1670s, "belonging to a large group of objects," formed in English from Latin gener-, stem of genus "race, kind" (see genus) + -ic. Hence "of a general kind, not special. In reference to manufactured products, "not special; not brand-name; in plain, cheap packaging," is from 1953 of drugs; of groceries, etc., from 1977. Related: Generically.
package (v.)youdaoicibaDictYouDict
1915, from package (n.). Related: Packaged; packaging.
tare (n.2)youdaoicibaDictYouDict
"allowable difference between gross and net weight, deduction made from gross weight of goods to account for approximate weight of packaging or container holding them," late 15c., from Middle French tare "wastage in goods, deficiency, imperfection" (15c.), from Italian tara, Medieval Latin tara, from Arabic tarah, literally "thing deducted or rejected, that which is thrown away," from taraha "to reject."
polytheneyoudaoicibaDictYouDict
"A tough, light flexible synthetic resin made by polymerizing ethylene, chiefly used for plastic bags, food containers, and other packaging", 1930s: contraction of polyethylene.