Practical Application on Surface-Densified Wooden Materials

按顺序将表面加固技术的实际应用作为通过该过程进行再加固木材，同时在滚筒印刷机中进行同样热的挤压，表面加固的颗粒板和地板材料的生产条件和物理性质对我们进行了调查。当专用板被挤压在200 ° C的滚动温度的条件下，压缩率为10%，表面层的密度随着进料速度的下降而增加。在93%的高度相对人性化程度上恢复了强化层的设置。压力板的厚度，加上1%的湿度含量的增加，比控制的要大。因为光滑是通过压力而改进的，所以它可以用来代替粒子板表面上的产品，也可以通过应用木胶合板或塑料板来完成。在另一只手上，内部粘合剂，表面强度和弯曲的性质通常被热压制。温度太高的治疗，太长的时间破坏了颗粒之间的粘合剂强度。地板材料的最佳生产条件，其中聚合物是表面加固和重新强化的，在一个滚筒印刷机上热压制，有三对滚筒跟随：聚合物;高密度聚乙烯（熔体指数， 0.9），治疗速度; 42厘米/分钟，压缩率; 10%，滚筒温度; 200 ° C （第一）， 90 ° C （第二），房间温度（第三），完全加固和强化的Hinoki或Sugi弯曲行为增加了10 - 60%，与未加工木材相比，也提高了抗磨损能力和硬度5次和1.1 - 1.4次，尊敬的。

In order to the practical application of the surface-densifying techniques by the process for reinforcing wood with polymer while simultaneously hot pressing it in a roller press, the production condition and physical properties of surface-densified particleboard and floor materials were investigated.1. When the particleboard was pressed at conditions of roll temperature of 200゜C and compression ratio of 10% to original thickness, the density of surface layer increased with the decrease in feed velocity of processing. The setting of densified layer recovered at high relative humidity of 93%. The thickness swelling of pressed particleboard with the increase of 1% moisture content was greater than control. As the smoothness was improved by pressing, that is adequate for products in which the surface of the particleboard is finished by applying wood veneers or plastic sheets. On the other hand, the internal bond, surface strength and bending properties decreased generally by hot pressing. The treatments at too high a temperature and for too long a press time damaged the bond strength between particles.2. The optimum producing condition of the floor materials which was surface-densified and reinforced with polymer by hot pressing in a roller press equipped with three pairs of roller was as follows:Polymer; High-density polyethylene (Melt index, 0.9), Treating velocity; 42cm/min, Compression ratio; 10%, Roller temperature; 200゜C (First), 90゜C (Second), Room temperature (Third).The bending behaviors of simultaneously densified and reinforced Hinoki or Sugi increased by 10 to 60% compared with untreated wood, and also the abrasion resistance and hardness were improved 5 times and 1.1 to 1.4 times, respectively.