Izdelava funkcionalnega prototipa embalaže s tehnologijo 3D-tiska

Golobič, Sara (avtor), Muck, Deja (mentor)

S komercializacijo in inovativnostjo se je uporaba 3D-tiska umestila na mnoga področja, tudi na področje embalaže. Embalaži, narejeni s tehnologijo 3D tiska, lahko na primer razširimo funkcionalnost z uporabo termokromnih filamentov, ki spremenijo svojo obarvanost ob spremembi temperature. Cilj magistrske naloge je bila izdelava dveh funkcionalnih prototipov embalaže (tj. plastenk) s 3D tiskalnikoma ob uporabi tehnologije ekstrudiranja termoplasta. Termokromni indikator je bil prototipoma plastenke dodan v dveh oblikah – kot termokromni filament, sočasno uporabljen v kombinaciji s konvencionalnim ABS filamentom pri tisku, in kot termokromna tiskarska barva, nanešena na predhodno tiskano plastenko iz konvencionalnega ABS filamenta. V eksperimentalnem delu magistrske naloge smo analizirali lastnosti in obnašanje termokromnega filamenta in termokromne tiskarske barve po izpostavitvi visokim temperaturam. Termokromna indikatorja smo testirali na izdelanih vzorcih in na koncu na samih prototipih plastenke. Ugotovitve so bile naslednje: izdelava plastenke z uporabo konvencionalnega ABS filamenta in z naknadno nanešeno termokromno tiskarsko barvo se je izkazala kot manj zahtevna v primerjavi z izdelavo plastenke s sočasno uporabo konvencionalnega ABS in termokromnega filamenta. Plastenka, izdelana z uporabo konvencionalnega ABS filamenta in z naknadno nanešeno termokromno tiskarsko barvo se je v smislu indikacije spremembe temperature izkazala kot boljša izmed obeh plastenk. Prav tako smo ugotovili, da ima termokromna tiskarska barva zelo intenziven odziv ob izpostavitvi visoki temperaturi, vendar ob daljši izpostavitvi temperaturam nad 250 °C degradira. S primerjavo časovne dinamike obarvanosti termokromnega filamenta in termokromne tiskarske barve smo ugotovili, da je način aplikacije termokromnega indikatorja vplival na hitrost spreminjanja obarvanosti ob povišani temperaturi. Kot boljši način aplikacije se je izkazal naknadni nanos termokromne tiskarske barve na predhodno tiskano plastenko.

• Jezik: Slovenski jezik
• Ključne besede: 3D-tisk, tehnologija ekstrudiranja materiala, termokromni materiali, termokromizem, termokromna tiskarska barva, plastenka
• Vrsta gradiva: Magistrsko delo/naloga
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Leto izida: 2020
• PID: 20.500.12556/RUL-116995
• Datum objave v RUL: 18.06.2020

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Production of functional packaging prototype with 3D printing technology

Izvleček

As a consequence of recent commercialisation and innovation, 3D printing technology has emerged into many fields, including the field of packaging. Functionality of packaging made by 3D printing technology may be expanded by addition of thermochromic filaments that change their colour as the temperature changes. The aim of the master’s thesis was to produce two functional prototypes of packaging (i.e. plastic bottles) with two 3D printers based on extrusion of thermoplastic material technology. A thermochromic element was added to prototypes of plastic bottle in two forms – as a thermochromic filament, concurrently used in combination with conventional ABS filament during 3D printing; and as a thermochromic printing ink, subsequently applied to pre-printed plastic bottle with conventional ABS filament. In the experimental part of the master’s thesis we analysed the properties and behaviour of thermochromic filament and thermochromic printing ink after exposure to elevated temperatures. We tested the thermochromic indicators on the experimental specimens and on the pre-made prototypes of a plastic bottle. The findings were as follows: the printing of a plastic bottle with only conventional ABS filament and subsequently applying thermochromic printing ink proved to be less demanding than the printing of a plastic bottle with concurrent use of conventional ABS and thermochromic filament. The plastic bottle made with only conventional ABS filament and subsequently coated with the thermochromic printing ink proved to be the better of the two bottles in the sense of temperature indication. We also found out that thermochromic printing ink has a very intense response when exposed to elevated temperatures, however after a longer exposure to elevated temperature above 250 °C the thermochromic printing ink degrades. By comparing the temporal dynamics of colouration of the thermochromic filament and the thermochromic printing ink, we observed that the method of application of the thermochromic indicator affected the rate of colouration change at elevated temperatures. Subsequently applying thermochromic printing ink on a pre-printed plastic bottle proved out to be the better of the two tested methods of application of the thermochromic indicator.

• Ključne besede: 3D printing, material extrusion technology, thermochromic materials, thermochromism, thermochromic printing ink, plastic bottle