zvigadzirwa

Zvinhu Zvinokanganisa Mafirimu Akasanganiswa Kurapa & Kuvandudza Mazano

Kuti uwane mhedzisiro yakanaka yekurapa, zvinhu zvakati wandei zvinoda kutariswa, zvinosanganisira:

1. Chimiro chekuporesa kamuri uye chimiro chakanaka: kukurumidza uye huwandu hwemhepo inopisa kubva pakupisa mudziyo uye mugero;pasi uye maviri kana akati wandei mativi ekamuri yekurapa ane yakakwana uye yakafanana tembiricha inopisa mhepo;mutsauko mudiki pakati petembiricha chaiyo uye yakatarwa, uye kuchengetedza kupisa uye kuraswa kwemarara kunosangana nezvikumbiro;mafirimu rolls ari nyore kufamba uye kutora.

2. Zvigadzirwa zvinosangana nezvikumbiro zvehunyanzvi.

3. Mabasa, corona value, heat resistance, etc. yelamination fims.

4. Adhesives: solvent adhesive, solventless adhesive, single kana kaviri chikamu chemvura base adhesive, inopisa melt adhesive, nezvimwewo.

Iri bepa rinonyanya kutarisisa pane lamination mafirimu uye adhesives.

1. Lamination Films

Iyo yemuviri, kupisa kupisa uye kuvharidzira kuita kwePE firimu, iyo inoshandiswa zvakanyanya, ichava nani, kana density yePE ichikwira.Mafirimu ePE ane density yakafanana asi maitiro akasiyana ekugadzira ane maitiro akasiyana.

CPE inogona kutonhodzwa nekukurumidza, ine yakaderera crystallinity, yakakwira pachena uye yakaderera turbidity.Asi kurongeka kwemamorekuru hakuna kurongeka, zvichiita kuti ive yakaipa chipingamupinyi kuita, inova yakanyanya kutapurirana.Uye zvakafanana neLDPE.Naizvozvo, tembiricha yekurapa haifanire kunge yakakwira zvakanyanya kana uchishandisa PE mafirimu.Kana kupisa kwekupisa kwePE kuri kuvandudzwa, tembiricha yekurapa inogona kunge yakakwira.

2. Zvinamira

2.1 EthylYakavakirwa Adhesive

Zvinoenderana nekuita kwemafirimu emafirimu uye zvinonamira, mamiriro ekurapa anogona kukamurwa kuita mazinga akasiyana:

1. Tembiricha 35, nguva 24-48h

2. Tembiricha 35-40, nguva 24-48h

3. Tembiricha 42-45, nguva 48-72h

4. Tembiricha 45-55, nguva 48-96h

5. Yakakosha, tembiricha inodarika zana, nguva maererano nerutsigiro rwehunyanzvi.

Kune zvigadzirwa zvakajairika, tichitarisa kuwanda, ukobvu, anti-block, kupisa kupisa kuita kwemafirimu pamwe nehukuru hwemabhegi, tembiricha yekurapa haifanire kunge yakanyanya kukwirira.Kazhinji, 42-45kana pasi zvakakwana, nguva 48-72 maawa.

Mafirimu ekunze ekuvhenekesa, anoda kuita kwepamusoro uye kushomeka kwekushisa akakodzera kupora tembiricha yepamusoro, senge anopfuura makumi mashanu..Mafirimu emukati, sePE kana kupisa kuvhara CPP, akakodzera 42-45, nguva yekurapa inogona kuva yakareba.

Zvigadzirwa zvekufashaira kana kudzorera, izvo zvinoda kushanda kwepamusoro uye kupisa kwakanyanya, zvinofanirwa kuenderana nemamiriro ekurapa ayo anonamira fekitori inopa.

Nguva yekurapa inofanirwa kuenderana nekuita kwekupedzisa chiyero, friction coefficient uye kupisa chisimbiso kuita.

Zvigadzirwa zvakakosha zvingada tembiricha yepamusoro yekurapa.

2.2 Solventless Adhesive

Kana kuiswa chisimbiso kuchisangana nezvinodiwa, kune zvigadziriswe zvisina kunyungudutswa zvelaminating zvigadzirwa, izvo zvemukati mafirimu ane yakaderera density, adhesives ane akawanda emahara monomers, zvichiita kuti zviome kuvhara.Nokudaro, kupora kwekushisa kwepasi kunokurudzirwa, kwe38-40.

Kana chiyero chekupedzwa kwekuita chichisangana nezvinodiwa, nguva yakareba yekurapa inofanirwa kutariswa.

Kana kupisa kwekuvhara mafirimu ane hupamhi hwepamusoro, tembiricha yekurapa inofanira kunge iri 40-45. Kana maitiro ekupedzisa chiyero uye kupisa chisimbiso kuita kuchida kuvandudzwa, nguva yekurapa inofanira kunge yakareba.

Strictly test is a must before mass production, kuve nechokwadi chemhando.

Uyezve, humidity inofanira kufungwa.Kunyanya pachando chakaoma, hunyoro hwakakodzera hunogona kukurumidza kuita chiyero.

2.3 Mvura Yakavakirwa Pamvura

Paunenge uchiisa VMCPP, muchina welamination unofanirwa kunge wakaoma zvakakwana, kana iyo aluminized layer ichave oxidized.Panguva yekurapa, tembiricha haifanire kunge yakakwira zvakanyanya kana kuderera zvakanyanya.Kupisa kwepamusoro kunotungamira kune yakakwira friction coefficient.

2.4 Hot Melt Adhesive

Kazhinji sarudza kurapa kwechisikigo, asi kuita kwekunamatira mushure mekunyunguduka kunofanirwa kucherechedzwa.

3. Kunyatsodzora Kurapa Temperature

Zvinoenderana netsvagiridzo, pachikamu cheyero yekupindura, hapana kana chekuita pasi pe30. Kupfuura 30, yese gumikumusoro, iyo reaction rate inovandudza kanenge ka4.Asi izvozvo's not right kuvandudza tembiricha kuti ikurumidze reaction rate usingaoni, zvinhu zvakati wandei zvinofanirwa kucherechedzwa:chaiyo reaction rate, friction coefficient uye kupisa kwekuvhara simba.

Kuti uwane yakanakisa kurapa mhedzisiro, tembiricha yekurapa inofanirwa kukamurwa kuita zvinhu zvakasiyana, zvinoenderana nemafirimu emafirimu uye zvimiro.

Parizvino, matambudziko akajairika ndeanotevera:

Imwe, tembiricha yekurapa yakadzikira, ichiita yakaderera reaction rate, uye chigadzirwa chine matambudziko mushure mekupisa kuvharwa kana kubikwa.

Chechipiri, tembiricha yekurapa yakakwira zvakanyanya uye inopisa yekuvharisa firimu ine yakaderera density.Chigadzirwa chacho chine chisimbiso chakashata chekuisa chisimbiso, yakakwira friction coefficient uye yakaipa anti-block mhedzisiro.

4. Mhedziso

Kuti uwane yakanakisa kurapa maitiro, tembiricha yekurapa uye nguva inofanirwa kusarudzwa nemamiriro ekunze tembiricha uye hunyoro, kuita kwefirimu uye kuita kwekunamira.


Nguva yekutumira: Kubvumbi-22-2021