ANALIZA PARAMETARA KOJI UTJEČU NA KVALITETU TISKA DOBIJENOG TEHNIKOM SITO TISKA NA PVC FOLIJAMA

Screen printing technique is used to apply transfer images to a wide variety of substrates. PVC foils can also be used as substrates. In the screen printing process on PVC foils different type of substrates, inks, as well as different mesh types, can be used. In this research, we used two types of substrates (ORACAL 640 - Print Vinyl and LG Hausys LP2712), three different kinds of ink (Hi-Gloss 35 000, 85 000 and Ondaflut Texilon 58.000), and screens with three different mesh counts (77, 120 and 140 n/ cm). These substrates are exposed to various environmental factors including, light, etc. The aim of this paper is to determine differences between samples caused by variation of mentioned parameters on lightfastness.Tehniku sito tiska karakteriše sposobnost tiska na velikom broju različitih podloga, pa se tako ovaj postupak tiska primjenjuje i pri tisku PVC folija. U procesu tiska na ovu vrstu podloge, može se vršiti varijacija različitih procesnih parametara, kao što su podloge, boje i gustine tkanja sita. Upravo zbog toga u ovom istraživanju korištene su dijve vrste tiskarskih podloga (ORACAL 640 –Print Vinyl i LG Hausys --------+LP2712), tri različite vrste boje (Hi-Gloss 35.000, Ondaflut 85.000 i Texilon 58.000), kao i sita sa tri različite gustine tkanja (77, 120 i 140 n/cm). PVC folije koje su predviđene za aplikaciju na vetrobranska stakla izložene su vremenskim uslovima. Cilj ovog rada je da se utvrdi, koliko će se postojanost uzoraka na svjetlost razlikovati ukoliko se promene parametri podloge, vrste boje i gustine tkanja sita

Influence of printing speed on production of embossing tools using FDM 3D printing technology

Manufacturing of the embossing tools customary implies use of metals such as zinc, magnesium, copper, and brass. In the case of short run lengths, a conventional manufacturing process and the material itself represent a significant cost, not only in the terms of material costs and the need for using complex technological systems which are necessary for their production, but also in the terms of the production time. Alternatively, 3D printing can be used for manufacturing similar embossing tools with major savings in production time and costs. However, due to properties of materials used in the 3D printing technology, expected results of embossing by 3D printed tools cannot be identical to metal ones. This problem is emphasized in the case of long run lengths and high accuracy requirement for embossed elements. The objective of this paper is primarily focused on investigating the influence of the printing speed on reproduction quality of the embossing tools printed with FDM (Fused Deposition Modelling) technology. The obtained results confirmed that printing speed as a process parameter affects the reproduction quality of the embossing tools printed with FDM technology: in the case of deposition rate of 90 mm/s was noted the poorest dimensional accuracy in relation to the 3D model, which is more emphasised in case of circular and square elements. Elements printed with the highest printing speed have a greater dimensional accuracy, but with evident cracks on the surface

Investigation of Factors Influencing Ergonomic Characteristics of Water Bottle Handles

Increasingly competitive market environment pushes products and their packaging to meet functional and aesthetic requirements and expectations of consumers. Ergonomic features are one of the most important features for fulfilling consumer expectations and achieving a satisfying user experience. Drinking water in retail is commonly packaged in PET bottles ranging from 0.2 up to 6 litres. The weight of the 6-litre bottle is roughly 6 kilos which can produce strain on the hand while carried from the place of purchase to the place of usage. The goal of this research was to investigate the influence of water bottle handles and to determine how much does handle length, width, and curvature of the grip\u27s edges affect the comfort of product use. This research presents objective experimental measurements and subjective judgment regarding ergonomic characteristics of the 5-6 litre water bottle handles, based on the variations in their shape and dimensions

Thermovision and spectrophotometric analysis of ink volume and material characteristics influence on colour changes of heat treated printed substrates

U radu su predstavljene primjene suvremenih metoda kontrole, kao što su termovizijska i spektrofotometrijska analiza, u grafičkoj industriji. Suvremene metode kontrole primijenjene su pri istraživanju parametara diferenciranog nanosa boje na specifične podloge izložene toplotnim opterećenjima. Uzorci koji su rabljeni za istraživanje odštampani su Ink jet postupkom na digitalnom tiskarskom stroju Mimaki JV 22 koja koristi J-Eco Subly nano boje. U procesu tiska, rabljene su tri vrste podloga, pri čemu je za sve njih sastav materijala bio isti, ali su se razlikovale prema parametrima površinske mase i gustoće pletenja. Odgovarajuća test karta koja se sastojala od polja CMYK otiskana je s pet različitih nanosa boje. Ti uzorci su izloženi toplinskom djelovanju, pri čemu je polje toplinskog djelovanja mjereno termovizijskom kamerom. Uzorci su analizirani spektrofotometrijskim mjerenjima prije i poslije toplinskog djelovanja te je na osnovu tih podataka određena vrijednost razlike boje (ΔE76). Dobiveni rezultati su pokazali da povećanje broja nanosa boje, kao i odabir odgovarajuće podloge za štampu, može povećati eksploatacijske karakteristike otisaka.This paper presents experimental usage of updated control methods such as thermovision and spectrophotometric analysis in graphic industry. These methods were applied to research the influence of ink volume and material characteristics on colour and heat treated printed substrates. Samples used in these experiments were printed by digital ink jet printing technique using Mimaki JV22 printing machine and J-Eco Subly Nano inks. As printing substrates, three different types of materials were used. Materials were different in respect of fabric weight and thread count, while material composition was the same for all three materials. The appropriate test card consisting of fields of CMYK colours was printed, varying the number of ink layers applied. Samples were exposed to heat treatment after printing. The heat applied was measured by thermovision camera. Spectrophotometric measurements were conducted before and after heat treatment. Based on data gathered by spectrophotometric measurements colour difference ΔE76 was calculated. Results showed that increasing number of layers, as well as right choice of substrates, can improve behaviour of printed product during exploitation

Thermovision and spectrophotometric analysis of ink volume and material characteristics influence on colour changes of heat treated printed substrates

U radu su predstavljene primjene suvremenih metoda kontrole, kao što su termovizijska i spektrofotometrijska analiza, u grafičkoj industriji. Suvremene metode kontrole primijenjene su pri istraživanju parametara diferenciranog nanosa boje na specifične podloge izložene toplotnim opterećenjima. Uzorci koji su rabljeni za istraživanje odštampani su Ink jet postupkom na digitalnom tiskarskom stroju Mimaki JV 22 koja koristi J-Eco Subly nano boje. U procesu tiska, rabljene su tri vrste podloga, pri čemu je za sve njih sastav materijala bio isti, ali su se razlikovale prema parametrima površinske mase i gustoće pletenja. Odgovarajuća test karta koja se sastojala od polja CMYK otiskana je s pet različitih nanosa boje. Ti uzorci su izloženi toplinskom djelovanju, pri čemu je polje toplinskog djelovanja mjereno termovizijskom kamerom. Uzorci su analizirani spektrofotometrijskim mjerenjima prije i poslije toplinskog djelovanja te je na osnovu tih podataka određena vrijednost razlike boje (ΔE76). Dobiveni rezultati su pokazali da povećanje broja nanosa boje, kao i odabir odgovarajuće podloge za štampu, može povećati eksploatacijske karakteristike otisaka.This paper presents experimental usage of updated control methods such as thermovision and spectrophotometric analysis in graphic industry. These methods were applied to research the influence of ink volume and material characteristics on colour and heat treated printed substrates. Samples used in these experiments were printed by digital ink jet printing technique using Mimaki JV22 printing machine and J-Eco Subly Nano inks. As printing substrates, three different types of materials were used. Materials were different in respect of fabric weight and thread count, while material composition was the same for all three materials. The appropriate test card consisting of fields of CMYK colours was printed, varying the number of ink layers applied. Samples were exposed to heat treatment after printing. The heat applied was measured by thermovision camera. Spectrophotometric measurements were conducted before and after heat treatment. Based on data gathered by spectrophotometric measurements colour difference ΔE76 was calculated. Results showed that increasing number of layers, as well as right choice of substrates, can improve behaviour of printed product during exploitation

The influence of heat treatment on the quality of screen printed textile substrates

During exploitation, textile products printed with screen printing technique are quite often exposed to variousinfluences, one of which is a heat treatment- firstly during the production process and later on when ironing.Heat is simultaneously affecting deposited colorants (ink) on the surface of the substrate material, as well astextile fibers in the material structure. As a result, colorimetric characteristics of printed colorants arechanged. The research presented in this paper aims to determine the influence of heat treatment on colorchanges of screen printed textile substrates, observed in CIE L*, a*, b* color space. Macro non-uniformity ofthe printed cotton textile materials was analyzed as a function of temperature levels applied during thermaltreatments and textile material characteristics, as well as mesh counts of screens used in the printing process.The results show that thermal treatment affects the color change of printed samples

Pet Bottle Design, Correlation Analysis Of Pet Bottle Characteristics Subjective Judgment

Ability to predict consumer’s reaction to particular design solution of the product is very important. Gathering andanalysis of subjective judgments of particular characteristics, based on which the aesthetic of the product is judged,is one of predicting the consumer’s reaction in the future. Knowledge gathered this manner can serve as a referencefor further studies of determining factors for aesthetic results and design quality. There are two opposed opinionsregarding prediction of aesthetic impression. One opinion is that taste of individual cannot be discussed because itis extremely variable and the possibility of meaningful analysis of aesthetic impression is rejected. Other opinionstates that there is a consistent preference of certain aesthetic characteristics despite individual and group differences.Main goal of this paper is to examine the correlation between subjective judgments of certain PET bottlecharacteristics. Analysis showed meaningful correlation between some of the PET bottle characteristics while othercharacteristics showed less correlation. It can be concluded that not all of the characteristics have the same influenceon the aesthetics and design quality of the PET bottle form. Emphasizing the characteristics relative to aesthetics ofthe product can produce better market results, taking in to account that consumer’s buy the product they consider tobe more attractive if other parameters of the product are similar

Evaluating Web browser graphics rendering system performance by using dynamically generated SVG

This paper evaluates common web browsers graphics rendering system performance by using SVG on Windowsplatform. Performance was measured using two extreme case applications: application which generates simple SVGobjects (called “simple application”) and application which generates complex SVG objects (called “complex application”)based on random data often used for science purposes. Both simple and complex applications were hostedon local web server. Performance tests were performed using dedicated chamber environment

Influence Of Heat Treathment On Caracteristics Of Inkjet Prints On Textile Material

This paper presents research regarding influence of heat treatment on changes of prints on textile material whichare obtained by inkjet printing technique. Research was done on three characteristic materials (100 % polyester)on which ware printed test chart. Test chart consisted of four colour fields each 100% of one of process colours(CMYK). Printing machine used was Mimaki JV22-160 with J-eco Subly nano inks. Variable factor was numberof ink layers, textile materials ware printed with one, two, three, four and five layers of ink. The analysis of heattreatment influence on prints was done according to SRPS F.S3.311 standard (temperature 110 0C). Total of 60samples were analyzed, 20 for each material used in this experiment. Resistance of colour to heat treatment andtransfer to cotton cloth was determined for characteristic temperatures by using the gray scale. The surface changesof textile material before and after heat treatment ware monitored by SEM analysis

Influence of the shape on the consumers perception of the packaging attributes

Packaging for fast moving consumer goods (FMCG) demands constant attention in order to stay competitive in modern dynamic markets. FMCG consumers do not think about the purchasing product until they enter the place of purchase. This emphasizes importance of the communication in a place of purchase. Alongside promotional banners, displays and counters, packaging can be used for this purpose. While in-store promotional banners, displays and counters represent additional cost, the packaging as the integral part of the product can be used as an important marketing tool that does not add to product cost. Thus packaging becomes an important marketing tool that does not add to product cost. Marketers, distributors and researchers as well must take into consideration the complexity of consumer behaviour to achieve desired results. Alongside graphic design, material, colour, etc. packaging shape is considered as an important tool for product differentiation and promotion. Having this in mind, it is unclear why the influence of the packaging shape on the consumer remains the least examined of all packaging characteristics. The aim of this research is to understand the influence of packaging shape design on the consumer’s perception. The survey study conducted among the consumers of the fast moving consumer goods gave clear insight into the influence of packaging shape on the perception of packaging characteristics. The results can help to improve packaging shape design in order to achieve better market impact