原始的发泡工艺：手工搅拌、物料填充到水箱内部。这是最原始的发泡工艺，已基本被淘汰，目前仅少量还存在于作坊中。 随着低压发泡机的发展，发泡工艺由纯手工升级到半自动化浇注生产，几乎不用工装模具就可以生产。由于低压发泡机的料比不可调、混合压力低、流量小等问题，浇注出的发泡料闭孔率低，保温效果不好，再加上多次浇注才能完成一台水箱，因此水箱内部泡沫存在收缩，特别是管口位置，冬季普遍会出现裂口。生产厂家为了减少开裂问题，不得不提高自由泡的密度。再通过发泡塞的材质，脱模剂的成分等方面增加管口结皮的厚度等，虽然减少了开裂的表象，但依然不能根本解决收缩问题。

    　随着行业发展，较大的企业普遍购置了高压发泡机，发泡混合效果好，闭孔率高，保温性能好，减少开裂。广东弗雷特机电科技有限公司位于广东省中山市南头镇升辉北工业区，是一家集研发、生产、销售、售后服务于一体的聚氨酯机械自动化生产型企业。该司研发制造各类聚氨酯浇注机、聚氨酯发泡机、自动化发泡生产线（悬挂线/地轨线/圆盘线等）、自动化发泡模具模架、机械臂等聚氨酯成套发泡设备，帮助上千家聚氨酯制品生产型企业用户达到“制品优良率高，设备故障率低”。

What are the advantages of high pressure foaming machine compared with low pressure foaming machine?

      Original foaming process: manual mixing, material filling into the water tank. This is the most original foaming process, has been basically eliminated, only a small amount still exists in the workshop. With the development of low pressure foaming machine, the foaming process has been upgraded from pure manual to semi-automatic casting production, which can be produced almost without tooling. Due to the material ratio of the low-pressure foaming machine is not adjustable, the mixing pressure is low, the flow is small and other problems, the closed cell rate of the foaming material poured out is low, the insulation effect is not good, and the multiple pouring can only complete a water tank, so the foam inside the water tank is shrinking, especially the position of the pipe mouth, and there will be cracks in winter. Manufacturers have to increase the density of free bubbles to reduce cracking problems. Through the material of foaming plug, the composition of mold release agent and other aspects to increase the thickness of tube mouth crust, although reduce the appearance of cracking, but still can not fundamentally solve the problem of shrinkage.

       With the development of the industry, larger enterprises generally purchase high pressure foaming machine, good foaming mixing effect, high closed cell rate, good insulation performance, reduce cracking. Guangdong Fuleite Mechanical and electrical Technology Co., Ltd. is located in Shenghui North Industrial Zone, Nantou Town, Zhongshan City, Guangdong Province, is a set of research and development, production, sales, after-sales service in one of the polyurethane machinery automation production enterprises. The department of research and development manufacturing all kinds of polyurethane foam casting machine, polyurethane foaming machine, automatic production line (suspension line/trajectory/disk line, etc.), automatic foaming mold mold frame, the polyurethane foam of complete sets of equipment, such as mechanical arm to help thousands of polyurethane products production enterprise users to "high rate of good products, low equipment fault rate.