随着非PVC膜软袋大输液市场竞争越来越激烈,采用价格较低的三层膜的制药企业越来越多,这样可以降低成本、增强产品的竞争力。相对于五层膜(特别是M312C)来说,三层膜成形温度较低,焊接性能较差,对温度的适应性较差,特别是与硬接口焊接 As non-PVC membrane pouch infusion market competition more and more fierce, the lower the price of the three-tier pharmaceutical companies more and more, so as to reduce costs and enhance product competitiveness. Relative to the five-layer film (especially M312C), the three-layer film forming temperature is lower, poor welding performance, poor adaptability to temperature, especially with hard-interface welding