把边缘折起来以便封紧。用英语怎么说？

把边缘折起来以便封紧。

Crimp the edges to seal them tightly.

crimp

vt. 使（头发）卷曲，把…压成褶子；

例句
Obviously, the regular crimp wave provides a mechanism for short - range entanglement of the ratchet type.
虽然, 有规则的卷曲波纹能使纤维间短片段内彼此纠缠接触,产生棘轮式机械作用.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

edges

n. 边( edge的名词复数 )，优势，（悬崖、峭壁的）边缘，锋利；

例句
This creates a spectrum of colours at the edges of objects which blurs the image...
这在物体的边缘形成了一道色谱，使图像变得模糊不清。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

seal

n. 密封，印章，海豹，封条；v. 密封，盖章，决定，封上（信封）；

例句
Ministers have put their seal of approval on the proposal...
部长们已经批准了该提案。

them

pron. 他们，她们，它们；

例句
I take care of them to the best of my abilities...
我尽我所能地照顾他们。

tightly

adv. 紧紧地，坚固地，牢固地；

例句
Hundreds of tightly rolled newspapers were set aflame among the 50,000 crowd.
几百张卷紧的报纸在为数5万的人群中被点燃。