3 Izibalo Ezichaza Iphepha Eliphezulu Lokusebenza Elingangeni Namanzi
Kwadalwa ngo 08.26
Ngesikhathi izici eziningi zidlala indima ekwakheni ikhwalithi yephhepha elingangeni namafutha, izinombolo ezintathu zibalulekile ekuchazeni izici zayo eziphezulu. Lezi zinombolo zingalinganiswa, zihlakaniphile, futhi zikhombisa kahle lokho okufanele kulindelwe kumkhiqizo.
The 3 numbers that define high-performance greaseproof paper are:
1. Kit Rating ≥ 12
2. Gurley Hill Porosity > 1000 sekondes
3. Basisgewig (GSM) 35 - 50
Nansi isichazamazwi esinemininingwane yokuthi inombolo ngayinye imele ukuthini nokuthi kungani kubalulekile kangaka.
1. Kit Rating (Grease Resistance)
- The Number: ≥ 12 (Often 12, but high-performance papers can be 15+)
- What It Measures: Lezi yisivivinzo esiqinile sokumelana nephepha negrease kanye neoyili. Ikala ukuthi kuthatha isikhathi esingakanani ukuze i-grease ingene futhi ibonise isikhumbuzo esibonakalayo ngakolunye uhlangothi ngaphansi kwezimo ezijwayelekile.
- How It Works: The test uses a series of castor oil and toluene solutions numbered 1 through 12 (each "Kit" is a specific blend). A Kit 12 solution is 100% pure castor oil—the most challenging substance to block. A Kit Rating of 12 means the paper withstood 100% castor oil for the entire duration of the test (typically 15 minutes) with no penetration or stain. A lower rating (e.g., Kit 5) means it could only resist a much weaker, more diluted solution.
- Ngakho Iphawula Ukusebenza: Lokhu kuyinto eyinhloko yephhepha. I-Kit Rating ephezulu (12 noma ngaphezulu) iqinisekisa ukuthi izovimba kahle amafutha, uwoyela, namafutha ngisho nasezidleni ezinamafutha kakhulu ezifana nenkukhu ephekiwe, ibhakhoni, ipizza, nezinkwa, ivimbela ukuvuza, ukupakisha okungcolile, nezindawo ezithintekayo.
2. Gurley Hill Porosity (Air Resistance)
- Die Zahl: > 1000 Sekunden (Je höher, desto besser. Einige Spezialpapiere überschreiten 10.000 Sekunden).
- What It Measures: This test measures the density and tightness of the paper's fiber structure. It records the time in seconds it takes for 100 mL of air to pass through a single square inch of the paper under a specific pressure.
- How It Works: A sample is placed in a Gurley Densometer. A cylinder of air is released, and a timer measures how long it takes to pass through the paper. A very low number (e.g., 10 seconds) indicates a porous, breathable paper like a coffee filter. A very high number (e.g., 1200 seconds) indicates an extremely dense, non-porous sheet—the hallmark of true greaseproof paper.
- Ngani Iphawula Ukusebenza: I-Porosity ixhumene ngqo nokumelana ne-grease. I-grease kanye ne-oil akakwazi ukungena esakhiweni lapho umoya ungakwazi khona ukungena kalula. Inombolo ye-Gurley ephezulu ibonisa ukuthi amafayibha ahlanzekile kakhulu futhi abanjwe ndawonye, akha umgoqo wezinto ongenawo amathuba alula okuthi i-grease ihambe ngawo. Lokhu futhi kunomthelela ekwakheni amandla ephepheni uma umanzi.
3. Basisgewicht (Grammage)
- Die Zahl: 35 - 50 Gramm pro Quadratmeter (GSM)
- What It Measures: Lokhu kuyisilinganiso (ngama-gram) sekwedlula kwesikwele esisodwa sephepha. Kuyisibonakaliso esiqondile sokwakheka, ubukhulu, kanye nokuhlala isikhathi eside kwephepha.
- How It Works: It's a simple measurement of weight over area. While not a direct measure of thickness (that would be caliper or microns), a higher GSM generally correlates with a heavier, more robust paper.
- Ngani Iphawula Ukusebenza:
- Too Low (<35 GSM): Ibhodi ibonakala ingaqinile, iyathandeka kakhulu ngesikhathi sokuphatha, futhi ingase ingabi ne-fiber mass eyanele ukuhlinzeka ngengxenye yokuvikela amafutha ethembekile, noma ngabe inenani elihle le-Kit.
- Ideal Range (35-50 GSM): Lezi yindawo efanelekile yephakheji yokudla ephezulu. Iphakela amandla amahle nokumelana nokuphuka ngaphandle kokuba mncane kakhulu noma iqinile. Izwakala ibalulekile esandleni futhi ingabamba isisindo sokudla esishisayo, esinokuthambisa ngaphandle kokwehluleka.
- Too High (>60 GSM): Ipapha iba sengathi ibhodi, ilahlekelwa ukufinyelela okudingekayo kokupakisha futhi ikhulisa izindleko zezinto ngaphandle kwesidingo.
Putting It All Together: What to Look For
When evaluating a high-performance greaseproof paper for professional use (e.g., a bakery, food truck, or restaurant), you should look for a product that specifies:
"This paper has a Kit Rating of 12, a Gurley Hill porosity of over 1000 seconds, and a basis weight of 40 GSM."
Lezi zinombolo ezintathu zikhombisa isithombe esiphelele, esisebenzayo sokusebenza kwephepha, ngaphezu kokwethembeka kwezincazelo zokumaketha ezifana "ezinamandla kakhulu" noma "ezivimbela uwoyela kakhulu." Zikutshela ukuthi izoba nokumelana okuphezulu nowoyela, yenziwe ngestructure ye-fiber eqinile, futhi ibe namandla omzimba okwenza umsebenzi wayo ngokwethembeka.
Ray
Ferrill
Evelyn