Tarpaulins feem ntau categorized ua ob hom loj: coarse tarpaulins thiab nplua tarpaulins.
Coarse tarpaulins (tseem hu ua npog tarps) yog ua los ntawm cov tawv tawv, crease-cov ntaub tiv taus nrog dej zoo heev; lawv tau siv los npog cov khoom thauj thaum lub sijhawm thauj khoom thauj thiab hauv cov chaw qhib - huab cua warehouses, nrog rau cov tsev pheeb suab hauv tsev.
Cov tarpaulins zoo yog siv los tsim cov khaub ncaws tiv thaiv kev ua haujlwm thiab lwm yam iav. Tom qab dyeing, cov ntaub kuj tuaj yeem siv rau khau, hnab mus ncig, thiab hnab ev khoom. Tsis tas li ntawd, muaj cov tarpaulins tshwj xeeb xws li roj hmab tarpaulins, hluav taws kub- tiv taus thiab hluav taws xob- tiv thaiv tarpaulins, thiab tarpaulins siv hauv cov tshuab papermaking.
1. Xov tooj:
Cias muab, xov tooj suav hais txog lub thickness los yog fineness ntawm cov xov paj. Tuam Tshoj feem ntau siv "Imperial system": yog tias ib phaus (454 grams) ntawm paj rwb xov paj (los yog cov xov paj ntawm lwm cov khoom sib xyaw) ntsuas 840 yards ntev, cov xov paj fineness txhais tau tias yog "1 suav" (1S). Yog tias ib phaus ntawm cov xov paj ntsuas 10 × 840 yards, qhov zoo yog 10 suav (10S). Hauv Imperial system, lub cim "S" qhia txog kev suav. Tib yarn raug xaiv raws li hauv qab no: 32-suav ib yarn yog sau li "32S". Plied yarn (twisted strands) raug xaiv raws li hauv qab no: 32-suav plied yarn (ob strands twisted ua ke) yog "32S/2"; 42-suav xov paj nrog peb strands twisted ua ke yog "42S / 3".
2. Ceev:
Chav tsev ntawm kev ntsuas rau tarpaulin npuag ntom yog metric, xa mus rau tus naj npawb ntawm warp thiab weft yarns teem nyob rau hauv ib tug 10 cm ncua. Qhov ntom ntom ncaj qha cuam tshuam rau lub cev thiab cov khoom siv kho tshuab-xws li lub ntsej muag, tes- hnov, tuab, lub zog, crease resistance, breathability, abrasion resistance, thiab thermal rwb thaiv tsev-thaum tseem cuam tshuam cov nqi khoom thiab kev tsim khoom.
Indirect Test Method
This method is suitable for fabrics with high density and fine yarn counts that feature a regular weave structure. Ua ntej, cov ntaub qhwv thiab cov xov tooj ntawm warp yarns (los yog weft yarns) nyob rau hauv lub weave rov yog soj ntsuam; Daim duab no yog muab faib ua cov xov tooj ntawm cov xov paj rov ua dua li ntawm 10 cm kom tau txais cov xov paj warp (lossis weft) ntom ntom.
Kev suav ncaj qha
Txoj kev suav ncaj qha yog ua los ntawm cov ntaub ntawv tshuaj xyuas iav los yog cov ntaub iav tsom iav. Qhov ntsuas ntawm cov ntaub ntom tsom iav yog 5 cm ntev. Hauv qab lub lens, ib kab liab yog etched rau ntawm ib daim iav. Txhawm rau txheeb xyuas cov ntaub ntom ntom, tso lub lens kom ob qho tib si kab liab ntawm lub iav sawb thiab cov kab liab ntawm cov nplai ua ke nrog qhov chaw nruab nrab ntawm ob lub xov paj; siv qhov no los ua qhov pib, suav cov xov paj thaum txav lub lens kom txog thaum lub cim 5 cm. Muab cov xov tooj suav los ntawm 2 kom tau txais tus nqi ceev rau 10 cm ntev ntawm cov ntaub.
Thaum suav cov xov paj, pib ntawm qhov nruab nrab ntawm ob lub xov paj. Yog tias qhov suav ntawm qhov kawg siab tshaj 0.5 yarns tab sis tsawg dua li cov xov paj tag nrho, nws yuav tsum raug xam raws li 0.75 yarns.
Yog tias suav tsawg dua 0.5 yarns, nws yuav tsum tau muab xam raws li 0.25 yarns. Feem ntau, 3 mus rau 4 qhov ntsuas yuav tsum tau muab coj los ntsuas, thiab cov lej lej ntawm cov txiaj ntsig no siv los ua qhov kawg tshwm sim.
3. Gram Nyhav:
Gram hnyav hais txog qhov hnyav hauv grams ntawm ib square meter ntawm ntaub.
Woven tarpaulin fabrics feem ntau teev nyob rau hauv ooj ("oz"), thaum knitted tarpaulin fabrics feem ntau siv gram hnyav (g / m²). Tus nqi hloov dua siab tshiab yog 1 ooj rau 28.375 grams, txawm tias ntaub - lub tshuab hnyav feem ntau siv tus nqi ntawm 28.35 grams. Qhov kev ntsuas no nyob ntawm cov xov paj suav thiab ntaub warp / weft ntom; lub coarser cov xov paj thiab qhov siab dua qhov ntom, cov ntaub tuab dua thiab qhov hnyav dua gram.
