Lub ntsiab yam tseem ceeb cuam tshuam rau kev khi ceev ceev ntawm cov ntawv zoo meej-bound hardcover

Lub ntsiab yam tseem ceeb cuam tshuam rau kev khi ceev ceev ntawm cov ntawv zoo meej-bound hardcover

Cov yam tseem ceeb uas cuam tshuam rau kev ceev ceev ntawm kev sib txuas wireless yog: qhov zoo ntawm qhov kev kho saum npoo ntawm phau ntawv rov qab, qhov kub ntawm cov kua nplaum kub, lub thickness ntawm cov kua nplaum nyob rau sab nraum qab ntawm phau ntawv hardcover, thiab qib ntawm compression ntawm cov kua nplaum. phau ntawv rov qab. Hardcover phau ntawv npog thiab rov qab thiab lwm yam.

Hardcover phau ntawv rov qab cover zoo thiab rework zoo

Lub roughening zoo ntawm hardcover phau ntawv rov qab milling yog lub ntsiab tseem ceeb cuam tshuam qhov ceev ntawm cov kua nplaum binding. Qhov zoo ntawm kev ua haujlwm sab nraub qaum yog tus cwj pwm los ntawm macroscopic thiab microscopic geometry ntawm daim ntawv rov qab, uas tuaj yeem sawv cev los ntawm tus lej lej ntawm macroscopic unslip ntawm daim ntawv tus Tsov tus tw. Thaum lub sij hawm milling thiab roughening lub nraub qaum ntawm phau ntawv, cov fibers ntawm ntug ntawm daim ntawv yog loosened los ua ib tug ntxhib nto, thiab cov kua nplaum nkag mus rau hauv daim ntawv nto raws cov fibers thiab adheres rau ib leeg. Lub nraub qaum ntawm phau ntawv tsis yog ntxhib, milling yog du, qhov sib txuas ntawm daim ntawv thiab cov kua nplaum me me, thiab kev nkag mus thiab adhesion ntawm cov kua nplaum hauv daim ntawv tsis tuaj yeem lav. Tom qab lub nraub qaum ntawm phau ntawv yog sanded, ib tug ntxhib nto yog tsim. Ib yam li ntawd, cov kua nplaum tsis nkag mus rau hauv daim ntawv yooj yim vim tias daim ntawv ntaub plaub thiab huab cua sib sau rau saum npoo ntawm lub nraub qaum ntawm phau ntawv, tiv thaiv cov kua nplaum los ntawm kev sib cuag ntawm daim ntawv. Sib tsoo rov qab creases nrog ib tug dull riam yuav ua rau ib tug ntxhib rov qab, uas kuj yuav cuam tshuam qhov ceev ntawm cov kua nplaum mount.

kub yaj kub

Ntau hom kub yaj nplaum nplaum muaj cov khoom sib txawv. Rau tib qhov kub yaj nplaum nplaum, raws li qhov kub thiab txias, qhov viscosity qis dua, qhov zoo dua qhov ntub dej ntawm phau ntawv ntxhib rov qab thiab nplooj ntawv. Qhov zoo dua qhov ceev ceev. Thaum qhov kub thiab txias dhau lawm, cov polymer uas yog lub ntsiab ntawm cov nplaum nplaum kub yaj yuav raug thermal depolymerization, yog li txo cov nplaum nplaum ntawm cov nplaum nplaum kub. Yog tias qhov kub thiab txias qis dhau, qhov fluidity ntawm cov kua nplaum yuav ua rau tsis zoo, cuam tshuam rau adhesion ceev ntawm cov kua nplaum. Tam sim no, cov nplaum nplaum kub uas feem ntau siv hauv cov chaw luam ntawv muaj viscosity zoo thiab wettability nyob rau hauv qhov kub ntawm 170 ° C ~ 185 ° C, yog li nws yuav tsum tau ua kom sov tsis tu ncua thiab khaws cia ntawm qhov kub thiab txias thaum siv.

Adhesive txheej thickness

Raws li lub thickness ntawm kub yaj nplaum txheej nce, daim ntawv cog lus ceev ceev nce. Thaum lub thickness ntawm cov nplaum nplaum nce mus rau ib qho nqi, cov nplaum nplaum pib txo qis. Nws tuaj yeem pom tau tias kev siv cov nplaum nplaum nplaum nplaum nplaum nplaum nplaum nplaum nplaum tsis yog tsuas yog siv cov nplaum nplaum, tab sis kuj txo cov adhesion fastness thiab rhuav tshem tag nrho cov qauv ntawm phau ntawv.

Lub thickness ntawm cov nplaum nplaum kub yuav tsum tau txiav txim siab raws li qhov tuab ntawm cov ntawv luam tawm, hom luam ntawv thiab npog daim ntawv, thiab hom thiab qhov zoo ntawm cov nplaum nplaum kub. Feem ntau hais lus, nyob rau hauv cov xwm txheej uas ob qho tib si tom kawg yog qhov zoo ib yam, qhov ceev ntawm cov kua nplaum yog nyob ntawm qhov tuab ntawm phau ntawv thaiv. Txawm hais tias qhov kev taw qhia fiber ntau ntawm daim ntawv yog sib npaug rau sab nraub qaum ntawm phau ntawv thaiv, qhov adhesion ceev ntawm phau ntawv nyias nyias yog qhov zoo tshaj plaws, qhov adhesion ceev ntawm nruab nrab thickness phau ntawv thaiv yog qhov thib ob, thiab adhesion ceev ntawm lub phau ntawv tuab yog qhov thib ob. Cov phau ntawv tuab tshaj plaws yog cov neeg pluag.

Cov txiaj ntsig ntawm txoj kev tshawb no qhia tau hais tias rau phau ntawv blocks nrog cov thicknesses sib txawv, cov thickness tsim nyog ntawm cov nplaum yuav tsum raug xaiv. Piv txwv li, thaum luam ntawv ib phau ntawv nrog lub thickness ntawm 10 mus rau 12 hli ntawm letterpress ntawv, lub thickness ntawm kub yaj nplaum txheej yog 0.4 hli. Rau kev tshaj tawm nrog lub thickness ntawm 20mm thiab saum toj no, lub thickness ntawm kub yaj nplaum yuav tsum ncav cuag 0.8 mus rau 1.0mm. Qhov degree ntawm compression ntawm lub hau thiab phau ntawv thaiv. Lub hau yuav tsum haum rau sab nraub qaum thiab sab ntawm phau ntawv kom ruaj khov, tsis muaj wrinkles, thiab sab nraub qaum yuav tsum yog lub duab plaub zoo nkauj.