Progress in co-extrusion type barrier laminate film equipment at Sumino Precision

With the rapid development of the plastics industry, plastics machinery has also evolved significantly, and at the same time, there are various plastic film preparation processes followed by continuous upgrading, today to understand the development process of co-extrusion class barrier composite film equipment.

1. Increasing number of composite layers

Co-extrusion composite film development of the initial production equipment has been developed from co-extrusion barrier composite film development of the initial three layers of flow-delayed, blow molding machine set, developed to 5 to 7 layers of the main flow-delayed, blow molding machine set, the current number of layers of the main flow-delayed, blow molding machine set, the number of layers of production up to 10 layers of barrier film into the film unit has been put into production. The increase in the number of layers provides greater flexibility and mobility in the design of barrier composite films and has the potential to further reduce the cost of raw and auxiliary materials, but with the increase in the number of layers that can be produced, the complexity of the equipment increases, manufacturing costs rise, one-time investment increases, and maintenance requirements are correspondingly higher. Therefore, the current ultra-multi-layer co-extrusion composite film film-forming equipment is still rare, the actual application is still 5 to 7 layer unit for more. www.susumino.com南京住野精工专业淋膜机

2. equipment film-forming precision continues to improve

The film-forming accuracy of co-extruded composite film production equipment is an important indicator of the equipment. As we all know, the effect of the use of film, although related to the nominal thickness of the film, but in fact depends on the thinness of the film, so people have always attached great importance to the thickness accuracy of the film, in the head die runner processing, film thickness feedback and automatic adjustment of the die gap, the wind ring component and temperature control, etc. has carried out a lot of research work, and has made great progress. At present, the thickness of the film blown by the co-extrusion blow molding machine has reached the level of ± 3% or less, the total thickness of 30μm of the 9-layer co-extrusion barrier film, the thickness of the barrier layer has been able to control to 1μm, the division is smooth, no broken layer phenomenon. www.susumino.com南京住野精工专业淋膜机

3. The development and utilisation of cutting edge monolayer type multilayer co-extrusion conforming to flat film die head

During the forming of flat films, both sides are invariably necked, resulting in extra thick edges, which must be cut away during the production of flat films to suit the needs of the roll and application. In order to reduce costs, it is often desired to crush the cut edges and add them to the new material for use in the oven. However, the multi-layer edges of barrier co-extruded composite films are less compatible with each other and the quality of the recycled material is lower. It is of positive significance to reduce production costs and improve product quality. www.susumino.com南京住野精工专业淋膜机

Nanjing Sumino Precision Machinery Co., Ltd. is a high-tech enterprise integrating scientific research, production and sales, and has always adhered to the business philosophy of honesty, equality and customer interest first. We have set up independent research and development technology centres and production departments for seven major types of equipment, including plastic sheet and plate, cast, bi-directional stretch, non-woven non-woven meltblown fabric, laminated film, recycled pelletizing and environmental recycling systems and coating machine manufacturing systems. We offer a full range of technical solutions to meet the specific needs of each customer. The following lines are available for customisation: PE double/three layer co-extrusion lamination line, LDPE (3 in 1) lamination line, PP, PE, PLA double sided lamination line, aluminium foil high speed lamination line, PP spunbond lamination line, textile lining lamination line, hot melt spray lamination line, multi-layer extrusion laminating line, graphene coating laminating line, carbon fibre laminating line.