Wazi kangakanani ngezinzuzo ze-PUR hot melt adhesive?

1. I-solvent-free, uhlobo lwengxenye eyodwa.

Uma kuqhathaniswa nezinye iglue eziwuketshezi,I-PUR ingcina ye-hotmeltinamathela ngo-100% futhi ayiqukethe uhlobo lwe-solvent. Ngakho-ke, ayidingi inqubo yokumisa isikhathi eside phakathi nenqubo yokubopha, futhi ingabopha izinto ezimbili cishe ngemizuzwana engu-6-20. , Ungagcina isikhathi. Ngaphezu kwalokho, azikho izincibilikisi ezingeke zingcolise imvelo kanye nobuthi. I-Theflux iwuhlobo lwento enephunga elikhudlwana futhi engcolisa imvelo.Kulezi zinsuku, imikhiqizo yezimboni inokulawula okuqinile ekuguquguqukeni, futhi asikho isidingo sokuyengeza uma ingengezwe.

 

2. Ukunamathela emazingeni okushisa aphansi.

Izinamatheliso ezincibilika ezishisayo ze-EVA, izinamatheliso ezizwela ukucindezela, njll., zinamaphoyinti ancibilika aphezulu uma kuqhathaniswa. Izinga lokushisa elijwayelekile liyi-170-200 ° C, kuyilapho okunamathiselwe kwe-pur hot melt kunephuzu lokuncibilika eliphansi. Izinga lokushisa elijwayelekile liyi-120-150°C. Incibilika ishisa kune-EVA. Iglue ingaphansi kuka-50°C. Le datha ibaluleke kakhulu. Izinga lokushisa eliphansi lemishini alikwazi nje ukonga ukusetshenziswa kwamandla kuphela, kodwa futhi linciphisa ukugqwala kwe-adhesive encibilikayo eshisayo emshinini ngesikhathi senqubo yokushisisa, kunwebe impilo yensizakalo yemishini, futhi kuvimbele ukunamathela okushisayo okuncibilika ekubeni semishini nasekuncibilikeni okushisayo. . I-Carbonization ivela ku-hose kanye nesibhamu seglue. Lesi sici sifaneleka ngokukhethekile ukuhlanganisa izinto ezingezwani nokushisa, njengamafilimu epulasitiki nezinye izinto ezizokhubaza futhi zincibilike lapho zingaphansi kwamazinga okushisa aphezulu. Inqubo ye-bonding ilula futhi ingasetshenziswa nge-roller coating noma i-nozzle coating nezinye izindlela zokulinganisa, ezifanele imishini ehlukahlukene yokulinganisa okuzenzakalelayo.

3. Ukwelapha ngokushesha.

Ngenxa yokuthi ingcina ye-PUR encibilikayo eshisayo ayinazo izincibilikisi, inqubo yokupholisa iyashesha kakhulu, futhi i-viscosity inamandla ikakhulukazi ngemva kokupholisa. Ingakwazi ukulungisa izinto ezimbili ezinamathelayo ngesikhathi esifushane (cishe imizuzwana engu-6-20), ngaleyo ndlela iguqule ngokushesha izinto ezinamathelayo Kuyinqubo yokucubungula elandelayo ukuze kuthuthukiswe ukusebenza kahle komsebenzi. Lokhu okungenakuqhathaniswa namanye amaglue angama- liquid. Ngemuva kokuthi i-glue ye-liquid isetshenziswe, kufanele ilinde i-glue ukuze yome ngokuphelele (okungenani imizuzu embalwa kuya emashumini emizuzu) ngaphambi kokuba ibe ne-viscosity eqinile.

 

4. Imvelo esebenzayo.

Inokumelana nokushisa okuhle kakhulu, ukumelana nokubanda, ukumelana nomhwamuko wamanzi, ukumelana namakhemikhali nokumelana ne-solvent.Izinto eziboshelwe ukunamathela kwe-PUR hot-melt ngeke zisuswe endaweni engaba ngu-150°C amahora angu-16, futhi endaweni engu-90°C. izinsuku ezi-3. Ngaphezu kwalokho, ingagcina i-viscosity enhle kwenye indawo yokupholisa nokufudumeza kungazelelwe, futhi ikhono lokumelana namanzi nokumelana namakhemikhali linamandla kakhulu.