无隔板高效过滤器滤料多采用玻璃纤维，化纤类的滤料使用范围也在逐步增加，外框主要使用:铝合金型材、多层板框、铝板框、镀锌钢板框，使用最多的为铝合金型材框，主要制作成立方体形结构。
      无隔板主要采用热溶胶作为滤芯的分隔物，便于机械化生产。加之其具有体积小、重量轻、便于安装、效率稳定、风速均匀的优点，目前洁净厂房所需的大批量的过滤器多采用无隔板结构。此外，与有隔板过滤器的矩形通道相比，无隔板过滤器的V形通道进一步改善了容尘的均匀性，延长了使用寿命。通风用无隔板过滤器可避免使用金属部件，易于废弃处理，符合日益严格的环保要求。除了某些耐高温和高安全性要求的特殊场合，无隔板过滤器均可取代有隔板过滤器。
无隔板过滤器运行原理主要是颗粒粉尘在气流中作惯性运动，当遇到排列杂乱的纤维时，气流改变方向，粒因惯性偏离方向，撞到纤维上而被粘结。粒子越大越容易撞击，效果越好。
      小颗粒粉尘作无规则的布朗运动。颗粒越小，无规则运动越剧烈，撞击障碍物的机会越多，过滤效果也会越好。空气中小于0.1微米的颗粒主要作布朗运动，粒子小，过滤效果好。大于0.3微米的粒子主要作惯性运动,粒子越大效率越高。扩散和惯性都不明显得粒子最难过滤掉。测量高效过滤器性能时，人们经常规定测量最难测量的粉尘效率值。
None-separator HEPA filter
Glass fiber is used for filter material of high efficiency filter,The range of filter using chemical fiber is also gradually increasing. The outer frame maily makes use of aluminum alloy profile, MDF frame, aluminum plate frame, galvanized steel plate frame,The most used is aluminum alloy section frame.
The main use of hot glue as the separator of filter cartridge is easy to mechanized production. In addition, it has the advantages of small size, light weight, easy installation, stable efficiency and uniform air flow. Compared with the rectangular channel with separator filter, the v-shaped channel of the none-separator filter further improves the uniformity of the dust-holding and extends the service life. Ventilated with none-separator filter can avoid the use of metal parts, easy to waste treatment, meet the increasingly strict environmental protection requirements. In addition to some special occasions for high temperature and high safety requirements, none-separator filters can replace separator filter.
None-separator filter works mainly catches particles in the air for inertial movement, when encountering disordered fibre, air flow changes direction; because of inertia swerve, particles bumped on fibre by adhesive. The bigger the particle, the better the impact.
Small particle dust is in a no-rule Brownian motion. The smaller the particle, the greater the irregular motion, and the more chance of bumping into an obstacle, the better the filter effect will be. Particles smaller than 0.1 micron in the air are mainly Brownian motion, with small particles and good filtering effect. Particles larger than 0.3 microns are mainly used for inertia, and the larger the particle is, the more efficient it is. [articles with neither diffusion and inertia are known to be the most difficult to filter out. When measuring the performance of high efficiency filters, it is often prescribed that the measurement of the most difficult to measure the efficiency of the dust.