Muaj ntau cov khoom siv nplaum tshiab tau tsim nyob rau xyoo pua 20th.Thiab qhov zoo nkauj tshaj plaws ntawm nws yog Sealing Tape, uas tau tsim los ntawm Richard Drew hauv xyoo 1925.
Muaj peb txheej tseem ceeb hauv daim kab xev sib khi tsim los ntawm Lu.Cov txheej hauv nruab nrab yog cellophane, yas ua los ntawm cov ntoo pulp, uas muab cov kab xev txhua yam muaj zog thiab pob tshab.Cov txheej hauv qab ntawm daim kab xev yog cov nplaum nplaum, thiab cov txheej sab saum toj yog qhov tseem ceeb tshaj plaws.Nws yog ib txheej ntawm cov khoom tsis nplaum.Feem ntau cov tshuaj muaj qhov nro qis heev thaum sib cuag nrog nws thiab tsis tuaj yeem ntub nws yooj yim (yog li peb yuav siv nws los ua cov lauj kaub uas tsis yog nplaum).Kev thov rau daim kab xev yog ib txoj kev zoo heev, uas txhais tau hais tias daim kab xev tuaj yeem txuas rau nws tus kheej, tab sis nws yuav tsis lo rau ib leeg mus tas li, kom nws tuaj yeem ua rau daim kab xev.
Rau cov neeg uas tsis zoo ntawm tearing daim kab xev, lawv yuav tsum nyiam siv cov ntaub nplaum hluav taws xob, uas tuaj yeem raug torn tsis muaj txiab.Vim hais tias cov ntaub fibers khiav los ntawm tag nrho cov yob ntawm daim kab xev rau kev txhawb zog, nws ua rau nws yooj yim dua los tsim kua muag.Nyob rau tib lub sij hawm, hluav taws xob daim kab xev kuj yog ib qho tseem ceeb txhua hnub rau cov neeg siv hluav taws xob.

Lub zog ntawm daim kab xev yog los ntawm cov ntaub fiber ntau, thiab cov nplaum thiab yooj yim los ntawm cov yas thiab cov nplaum nplaum.