一种pvc热收缩薄膜机组

Heat-shrinkable PVC film unit

Abstract

本发明公开了一种PVC热收缩薄膜机组,其由主机、辅机、收卷机和机架组成;主机包括挤出机、模具和风环;辅机包括第一牵引机构、小夹板、二泡部分和三泡部分,二泡部分包括二泡加热水箱、第二牵引机构、二泡定型水套、第三牵引机构和中夹板,二泡加热水箱、第二牵引机构和二泡定型水套安装在前机架上;三泡部分包括加热箱、第四牵引机构、三泡定型水套、第五牵引机构和大夹板,在下机架上通过旋转机构安装上机架,收卷机包括第六牵引机构和双工位收卷机构。本发明能够大大提升PVC热收缩薄膜的横向收缩率,使其横向收缩率为60%~65%,使热收缩印刷膜能够包到瓶口,保护瓶中的饮料,不会让瓶中的饮料受到阳光直射。
The invention discloses a heat-shrinkable PVC film unit. The heat-shrinkable PVC film unit is composed of a primary machine, an auxiliary machine, a winding machine and frames; the primary machine comprises an extruder, a die and a vane; the auxiliary machine comprises a first traction mechanism, small clamping plates, a second foaming portion and a third foaming portion, the second foaming portion comprises a second heating water case, a second traction mechanism, a second foaming fixing water jacket, a third traction mechanism and medium clamping plates, and the second heating water case, the second traction mechanism and the second foaming fixing water jacket are arranged on a front frame; and the third foaming portion comprises a heating case, a fourth traction mechanism, a third foaming fixing water jacket, a fifth traction mechanism and large clamping plates, an upper frame is arranged on a lower frame through a rotation mechanism, and the winding machine comprises a sixth traction mechanism and a double-station winding mechanism. The heat-shrinkable PVC film unit substantially raises the transverse shrinkage rate of a heat-shrinkable PVC film to 60-65%, and allows a hot-shrinkable print film to wrap a bottleneck in order to protect a beverage in the bottle and prevent the beverage in the bottle from direct sunlight.

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