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聚氯乙烯薄膜在美国广泛用作包装肉品的材料,每年耗量约8,000～9,000万磅,有75,000～10,000人从事此项工作。其中大部用手工包装机操作,这种机器用热或热金属丝将薄膜切割成一定尺寸,包好肉后,再用热熔化价格标签上的粘合剂贴上去。聚氯乙烯薄膜由聚氯乙烯树脂和适量的添加剂制成。商用包装鲜肉的薄膜含多至30%的增塑剂(己二酸二辛酯),2～6%的稳定剂(硬脂酸锌钙、环氧化大豆油)、抗泡沫剂、润滑剂(硬脂酸)和着色剂;包装熏肉、熟肉的薄膜,添加剂组份稍有不同。贴价格标签的粘合剂主要由邻苯二酸二环己酯及少量的几种不含卤素、环氧化物或聚氯基树脂的聚合物组成,可使标签溶周在包装膜上。
Polyvinyl chloride film is widely used in the United States as a material for the packaging of meat products, consuming about 80,000 to 90 million pounds per year and 75,000 to 10,000 people working on it. Most of them are handled by hand-packing machines, which cut the film into pieces with hot or hot metal wire, wrapped the pieces of meat, and then affixed them with the adhesive on the hot-melt price tag. Polyvinyl chloride film made of polyvinyl chloride resin and the right amount of additives. Commercially packaged films of fresh meat contain up to 30% plasticizer (dioctyl adipate), 2 to 6% stabilizers (zinc calcium stearate, epoxidized soybean oil), anti-foaming agents, lubricants Agent (stearic acid) and colorant; packaging bacon, cooked meat film, additive components slightly different. The price tag adhesive mainly composed of dicyclohexyl phthalate and a small amount of several non-halogen, epoxide or polychlorinated resin polymer, the label dissolved weeks in the packaging film.