Internship and graduation assignments Starting September 2020

Research Group Sustainable & Functional TextilesApplied research in textiles

Internship and graduation assignments at Saxion Research Group Sustainable & Functional Textiles,

starting September 2020

Would you like to design and develop new materials or innovative products? Work with

the latest technologies and high-tech equipment?

Participate in one of our projects with innovative, sustainable and functionaltextile solutions in the research group

Sustainable & Functional Textiles (S&FT) . With 2 research lines, an international

network and a large portfolio of research projects, we are constantly looking for intern

and graduate students.

This document contains the student assignments (intern and graduation) starting

September 2020. Please contact us if you have any questions, send an e-mail to Laura

Erkens: l.m.erkens@saxion.nl.

2 RESEARCH DOMAINS

1. Sustainable Textiles Within this research line, led by Jens Oelerich, we develop sustainable materials for example made of cotton waste (like the SaXcell fiber), apply biopolymers in technical textiles or design materials and products for recycling. Mechanical as well ass chemical recycling are researched for different fiber types. Also design for recycling and local production are important.

2. Functional Textiles Led by Eliza Bottenberg, is about design and development of Funtcional textiles. For example smart textiles with sensors or electronics that can react with changes in the surrounding. Or applying finishes like digital printing to make fabrics antibacterial, waterproof or breathable, on a sustainable way. But also new technologies like 3D printer and laser cutting are researched to develop new medical or interior textiles.

Recan 2

ProjectRecycling is the magic word, reused materials fit perfect in this time of climate change, plastic soup and circular economy. However, how can we prevent that this is not a hype, but that recycling is something that will be a normal activity in the future, just as recycling paper, glass and plastics for example. This has everything to do with the textile recycling techniques, on the other hand it is also about acceptation and awakening. The industry has to deliver a good product, the consumers wants to have value for their money. Bio, ‘green’ and recycled products are often more expensive compared to products from traditional resources. The acceptance of sustainability is increasing, but everything has to be ‘right’. How can a consumer recognize a product from recycled materials? Until now there is no authentication or label that gives the guarantee of a minimal percentage of recycled content per product. Therefore, Saxion is working on a project with the Ministry of Defense to do research about quantitative and qualitative measurement, analysis and/or sensing methodology in order to be able to determine the content of recycled material in clothing.

Student assignmentWhat makes textiles towards recycled textiles? Textile with 100% recycled content is not possible so far, but what is possible? What are the quantitative and qualitative limits?

GuidanceIf you are interested, please contact Mrs. Theresia Grevinga for more info: t.h.grevinga@saxion.nl.

Chemical recycling of polyester sport fabrics

ProjectThis research project takes place in cooperation with the company Deventrade. With a portfolio including the team sports brands Stanno, Reece Australia (worldwide), hummel, Derbystarand Select (Benelux), the DeventradeGroup has grown into a large sportswear brand company, with worldwide business interests. The head office is located in a state-of-the-art building in Deventer, the Netherlands.

Student assignmentThe student will start with a literature review on polyester and chemical recycling. Focus of the research will be the chemical feasibility of polyester recycling. The chemical recycling process will be researched in dept. This includes laboratory tests at the textile lab ass well.

GuidanceIf you are interested, please contact Mr. Harrie van Bommel for more info: h.w.m.vanbommel@saxion.nl.

Innovative surgical meshes

The projectSurgical meshes are used to absorb body fluids during surgery. Conventional surgical meshes are made from cotton and include barium wire. During surgery, tissues and organs could get damaged due to the use of conventional cotton surgical meshes. The surface of the cotton mesh is rather rough and small cotton particles can stay behind in the body, which might cause infections.

The assignmentPVA-mesh, made from PVA foam is an innovative tissue-friendly material, which has potential to replace the surgical cotton mesh. The goal of this project is to benchmark the material by developing new testing methods. The second challenge is to add barium to the PVA mesh, so the mesh is detectable by x-ray. An innovative technology needs to be applied to integrate barium or barium sulfate in the PVA-mesh. By joining this project, you can help to bring this medical innovation closer to application.

GuidancePlease contact Carlos Kuhlmann for more info: Email: j.c.kuhlmann@saxion.nl.

Reprinted June 12, 2019,from https://textilecourse.blogspot.com/2018/10/application-

nonwovens-medical.html

Expressure

ExpressureFoot ulcers are important complications of diabetic patients. The risk of diabetic foot-ulcers could be decreased, by early indication of the risk and produce fitted, orthopedic shoes to minimize pressure on the foot. However, at the moment there is no system available that measures the pressure between the entire foot and the shoe.

Student assignment – smart sensor sockWithin the Expressure project, the goal is to develop a textile sock with integrated sensors, that can 3D map the pressure of the foot, to give an optimal indication and minimize the risk of foot-ulcers. Would you like to work on the design and development of this smart sensor sock and reduce the high risk of foot ulcers for diabetic patients? Join are team!

GuidancePlease contact Mr. Carlos Kuhlmann, for more info: j.c.kuhlmann@saxion.nl.Reprinted May 14, 2020,from https://www.springwise.com/smart-socks-diabetics-help-

prevent-hospitalization.

HiTex

HiTexWithin the HiTex project we research the possibilities to build a textile grid. Think of weaving, knitting, printing etc. of conductive paths. This way we can develop digital textile products.

Student assignment – shirtProfessionalization of a shirt with integrated positioning sensors, for production employees. The University of Twente, together with a high-tech company have developed a shirt, that is able to measure whenever an employee has to do above shoulder lifting, to be able to measure and prevent muscle strain. They have developed a very basic shirt, with big cables and heavy electronics. They are looking for a textile engineer, to re-design the entire shirt, optimize integration of electronics and improve durability, reliability etc.

GuidancePlease contact Mrs. Eliza Bottenberg for more info: e.bottenberg@saxion.nl.

Reprinted November 23, 2019,from www.dailymail.co.uk/sciencetech/article-2568672/Forget-wristbands-smart-T-SHIRT-GPS-sensors-monitor-heart-rate-running-

speed-woven-it.html

Development of a textile heating element using valve jet technology

Valve jet is a unique application technology, offering possibilities for specific applications which can overcome the fundamental drawbacks of as well the piezo driven DOD inkjet technology as the conventional padding technology. Compared to traditional finishing, using padding technology to apply the chemistry, valve jet technology offers the possibility to apply chemicals in a patterned way. Apart from that, being a digital technology, valve-jet technology is far more flexible than padding, which makes it more suitable for producing smaller and customized batches, which is an important market trend in the textile industry.

Student assignment – textile heating elementThe student will start with a literature review on digital printing on textiles, valve jet technology and conductive textiles. Focus will be on the selected application areas, i.e. the application of conductive tracks to create a heating element. To start with the experimental part, the student will set-up a list of requirements for the application, a textile heating element, based on literature research, earlier research and intensive communication with Tanatex Chemicals. The next step is the set-up of an experimental plan for the application of the conductive tracks and the testing and optimizing of the conductivity as required for a textile heating element. The Chromojet device (a laboratory valve jet printer) present in the textile lab will be used for the application. The final goal of the project is a prototype/demonstrator of a textile heating element. The student will cooperate intensively with TanatexChemicals.

GuidancePlease contact Mr. Carlos Kuhlmann for more info: j.c.kuhlmann@saxion.nl.

Development of a connection technology for natural fibres, using valve jet technology

Valve jet is a unique application technology, offering possibilities for specific applications which can overcome the fundamental drawbacks of as well the piezo driven DOD inkjet technology as the conventional padding technology. One of the potentially interesting application areas is the application of a binder to enable gluing of textile structure made from natural fibres. The idea is to print lines of a binder on textile materials, which will enable the connection of 2 layers of textile substrates using an ultrasonic welding device or a hot press. This will expand the possible application of ultrasonic welding from thermoplastic materials only to textile materials based upon natural fibres. The combination of a relative high pick-up with the design freedom of digital printing, makes the valve jet technology a very promising technology to enable this application.

Student assignment – connection technology for natural fibresThe student will start with a literature review on digital printing on textiles, valve jet technology and ultrasonic welding technology. Focus is on the selected application areas, i.e. the application of a binder for the gluing of textiles. To start with the experimental part, the student will set-up a list of requirements for the application based on literature research, the results of earlier research and communication with Tanatex Chemicals. The next step is the set-up of an experimental plan for the application of the binder and the testing and optimizing of the connection, related to e.g. strength and flexibility. The Chromojet device (laboratory valve jet printer), present in the textile lab, will be used for the application. The final goal is a prototype/ demonstrator showing the potential of the valve jet technology for this application. The student will cooperate intensively with Tanatex Chemicals.

GuidancePlease contact Mr. Pramod Agrawal for more info: p.b.agrawal@saxion.nl.

3D concrete with textiles

Technical Textiles have a wide range applications. One application of technical textiles is the combination of textiles with concrete for the building industry. The building industry is also looking into new technologies such 3D printing, or more specific 3D printing of concrete. Research group Industrial Design, developed already several 3D printed concrete prototypes: https://www.saxion.nl/nieuws/2019/06/green-facade-eerste-3d-geprinte-betonnen-constructie-in-twente. Now a new project called ‘3D Beton’ focusses on further development of 3D printed prototypes. In this project the possibilities of 3D printing of concrete, reinforced with textiles materials will be researched. Technical textiles are already used as concrete reinforcement. However applying textiles during the 3D printing process is a new challenge.

Student assignment – connection technology for natural fibresThe student will research different technical textiles materials used as reinforcement for concrete. This includes hand on experiments in the 3D concrete printing lab and mechanical testing in the composite lab. The research will focus on the pro’s and cons of the different textile materials and on the application techniques of textiles with the 3D concrete printer.

GuidancePlease contact Mrs. Laura Erkens for more info: l.m.erkens@saxion.nl.

Development of an anti-slip sock, using valve jet technology

Valve jet is a unique application technology, offering possibilities for specific applications which can overcome the fundamental drawbacks of as well the piezo driven DOD inkjet technology as the conventional padding technology. One of the potentially interesting application areas is the application of a 3D-surface structure or relief printing. The possibility to deposit large quantities of inks (in g/m2) is potentially interesting for the application of a 3D-effect on textiles. The challenging part here is the application of (multiple) layers of inks without losing the 3D structure before the final curing. A potentially interesting application for this 3D-printing would be the creation of anti-slip socks

Student assignment – 3D surface structureThe student will start with a literature review on digital printing on textiles and valve jet technology. The student will focus on the selected application area, i.e. the application of a 3D surface structure or relief printing for anti-slip socks. To start with the experimental part, the student will set-up a list of requirements for the application based on literature research, earlier research and communication with Tanatex Chemicals. The next step is the preparation of the set-up of an experimental plan for the application of the 3D-surface structure and the testing of the 3D surface structure related to the requirements for the chosen application, anti-slip socks. The Chromojetdevice (a laboratory valve jet printer) present in the textile lab will be used for the application. The final goal is the preparation of a prototype/demonstrator. The student will cooperate intensively with TanatexChemicals.

GuidancePlease contact Mr. Henk Gooijer for more info: h.gooijer@saxion.nl.

Reprinted November 24, 2019,from www.caresse.nl/sokken/huissokken/homesocks-antislip-

sokken-met-abs-noppen

Conductive Materials for high-voltage cables

The global need for electrical power is growing faster each year. Traditional power sources are being replaced by more sustainable sources, that often require more and better electrical power connections. Therefore, the producers of power cables need to optimize their production and their product designs to keep up with this booming demand. One of the basic elements that are an obligatory part of the cable design is the flexible semi-conductive separation layer. These materials are still made in a very traditional way. Kaschier & Laminier GmbH, located in Bad Bentheim Germany, manufactures and develops technical textiles and composites. K&L is one of the biggest suppliers of industrial laminates in Germany. Although being not a member of the traditional world of cable manufacturing, K&L already presented some out-of-the-box solutions. As the ultimate target K&L now wishes to develop a disruptive technique for producing flexible semi-conductive separation materials.

Student assignmentAre you interested in developing a sustainable semi-conductive textile material, suitable for the development of high-voltage cables? Join K&L. You will work in an innovative environment and help create the next development that serves the world´s power supply. Please not that this assignment takes place at K&L, therefor the interview also takes place at K&L and not at SaxionS&FT

GuidancePlease contact Mr. Jaap Roosenbeek (Productmanagement), for more info: roosenbeek@kaschier.de.

Reprinted Novmeber 24, 2019,from https://www.kaschier.de/de

Application Process

If you would like to apply for an assignment,

sent your resume and motivation letter to the contact person.

Next a job interview takes place with 2 member of the research group.

When accepted for the assignment, the student will sign a contract and become an employee of Saxion,

Research Group S&FT. As an employee you are expected to

work 40 hours per week.Students receive an fee of

€ 230,- per month.

Guidance

Each intern/graduation semester starts with a general kick-off for all new students, to meet researchers and

students of the research group. Also more general information about the research group will be given.

Each student will meet at once every week with their company supervisor to discuss progress.

During the research period, interns and graduates will pitch their progress internally and give feedback to

each other.

At the end of the intern/graduation period, the student will give a final presentation. For graduates,

this will take pace one week upfront of their final graduation defence.

SAXION RESEARCH GROUP

SUSTAINABLE & FUNCTIONAL TEXTILES

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www.saxion.nl/sft