雪板小知识，板底材料，挤压还是烧结（Extruded vs Sintered）

因新购入某品牌（不提品牌了）公园板的板底是烧结板底，遂研究了下雪板的板底材料技术。很遗憾，我在网上找到关于板底介绍的文章都是写Snowboard（单板）的，双板雪道板研究板底材料不常见，倒是自由式或公园板子一般会标注板底材料。以下翻译自网上某论坛文章，介绍两者的区别和特点，感兴趣可以去看看。文章写的很有意思，开始还列出了很多必定争吵的话题。我挑出板底材料部分翻译一下，英语不是很好，凑合一下
https://www.trusnow.com/snowboard-ski-articles/Snowboard-Bases-Extruded-Vs-Sintered.asp

Extruded Bases:

The facts: Extruded bases are made with polyethylene pellets that are melted down under extreme heat. Once melted, the pellets are forced together under pressure using a machine that measures the correct base thickness. The result is one solid, completely smooth piece of polyethylene. Extruded snowboard bases tend to be more durable and cheaper to make than sintered bases. Extruded bases are not porous and do not hold wax as well as sintered snowboard bases. As a result, an extruded base will be much slower than a properly maintained, and wAXEd, sintered base. On the other hand, an extruded base will be much faster than an un-waxed sintered base.

Pros: Cheaper, more durable
Cons: Slower, does not hold wax

挤压板底：

事实上：挤压板底是聚乙烯颗粒材料通过极高温度融化后制成的，融化的聚乙烯颗粒被机器压到合适的厚度，最后形成一块完全平整的聚乙烯整体。挤压板底使用更耐久，且比烧结板底成本低廉。但挤压板底没有多孔，不能抓住更多的板蜡，所以，挤压板底要比板蜡状态良好的烧结板底速度慢得多。但从另一方面说，挤压板底要比没打板蜡的烧结板底速度快的多。

优点：价格便宜，使用更耐久
缺点：慢，不能保持住板蜡

Sintered Bases:

[size=11.818181991577148px]The Facts: Sintered snowboard bases are made with the same polyethylene pellets as extruded bases. However, instead of melting the pellets, the pellets are forced together under extremely high pressure. The result is a single piece of connected pellets with tiny pores across the entire length. Sintered bases are ideal for wax because the pores between the pressure-fused pellets hold the wax in place and help it stick to the base of the snowboard. When waxed regularly, sintered bases are much faster than extruded bases. Sintered bases can also be harder to repair than extruded bases.

Pros: Faster, holds wax better
Cons: More expensive, harder to repair

烧结板底：
事实上：烧结板底和挤压板底材料一样都是聚乙烯，但烧结板底没有高温融化聚乙烯，而是通过极高的压力直接挤压聚乙烯颗粒，结果就是一块连在一起的整体，且整块板底含有大量小气孔。烧结板底因为多孔结构，所以是理想的板蜡附着材料。正确的板蜡使得烧结板底比挤压板底快得多。但烧结板底要比挤压板底难以维护。

优点：快，更好保持住板蜡
缺点：贵，比较难修理

这个问题能弄明白的都是高人

好贴，这个知识必备~

QiaoJiannan 发表于 2014-2-18 10:26 因新购入某品牌（不提品牌了）公园板的板底是烧结板底，遂研究了下雪板的板底材料技术。很遗憾，我在网上找 ... ...

虽然不太懂，但从你的描述来看，怎么感觉说反了呢？既然是挤压，那么应该对应后面说的高压工艺啊，然后烧结，既然分为烧和结，不正应该是融化再凝固的过程么？是不是说反了呀？

发自8264手机版 m.8264.com

也感觉部分说反了。。