Use phase of apparel: A Literature review for Life Cycle Assessment with focus on wool.

ingridha on 24. February 2018

Kirsi Laitala, Ingun Grimstad Klepp & Beverley Henry

Summary

This report presents a literature review of clothing use phase. The purpose is to support improved methodological development for accounting for the use phase in Life Cycle Assessment (LCA) of apparel. All relevant textile fibres are included in the review. However, the main focus is on wool. We ask whether the use of wool has different environmental impacts than clothes in other fibres. The report builds on a review of literature from the past 20 years. The review showed that clothing made from different materials are used, and reused in different ways. Wool is washed differently as it has about ten degrees lower washing temperature than the average laundry in Europe. Wool is also more likely to be either dry-cleaned or washed by hand than other textiles. Moreover, when dried, it is less likely to be tumble-dried.

When comparing the number of days between the washes of different types of clothes, we found that respondents were likely to use their woollen products about twice as long between washes compared to their equivalent cotton products. We also found that woollen products had a longer average lifespan and were more likely to be reused or recycled. There is a lot of research-based information available concerning the use and re-use of clothing, and we believe there are sufficient results available on which to base LCA studies. Furthermore, we believe that environmental tools that compare different fibres but exclude use phase provide misleading results. Including the use phase in fibre ranking benchmark tools will improve the rigour and accuracy of these tools for all fibres, compared to reporting results for fibre production only. However, we have also shown that there are several methodological, conceptual and empirical knowledge gaps in existing literature.

Click here to read the full report (researchgate.net)

Wool as an Heirloom: How Natural Fibres Can Reinvent Value in Terms of Money, Life-Span and Love

ingridha on 24. August 2016

Ingun Grimstad Klepp, Tone Skårdal Tobiasson & Kirsi Laitala

Abstract

This paper addresses a main challenge for natural fibres; falling prices and increased focus on quantity versus quality. This is a challenge not only related to economic issues and profit, but is also unsustainable in an environmental perspective and in light of the challenges the textile sector and the world face. The paper uses wool as an example and in a surprising approach links the history and century-old traditions of natural fibers to an environmental thinking which supplements the traditional thinking around circular economy and LCA. Fabrics with a long life are the ones that have the lowest environmental impact (Fletcher and Tham2015; Laitala2014). Longevity or lifespan is a complex phenomenon in which both technical and social, or aesthetic aspects, are intertwined.

Click here to see the full paper in the book Advances in Science and Technology Towards Industrial Applications (springer.com)

Wool you wear it? – woollen garments in Norway and the United Kingdom

ingridha on 24. August 2016

Marie Hebrok, Ingun G. Klepp & Joanne Turney

Abstract

This article was developed from the project ‘Valuing Norwegian Wool’ initiated by the Norwegian National Institute for Consumer Research to generate knowledge on how wool can contribute to sustainable textile consumption, and how value creation can be increased in the Norwegian wool industry. The article will compare consumer perceptions, attitudes, practices and knowledge concerning wool as a material and as garments in Norway and in the United Kingdom, through a case study of wardrobes owned by six middle-class families.

The aim is to generate knowledge about the diverse web of aspects that influence consumption of woollen garments. The wardrobe study as a method aims to include the materiality of garments in clothes research in a more direct way. Analysing the materiality in connection with the social and cultural aspects of clothes gives us a better understanding of the relations between materiality and practice.

Click here to read the full article (southampton.ac.uk)

Why Cotton as Linen? The Use of Wool in Beds in Norway

ingridha on 22. August 2016

Ingun Grimstad Klepp, Tone Skårdal Tobiasson & Kirsi Laitala

Abstract

Cotton is the “natural” choice and the dominating material in bed linen and sleepwear in Norway as in many other European countries. Regulation of temperature and humidity are important for good sleep, but they are not cotton’s strong points. There must have been other than the functional reasons which made cotton the winner in the bedding market. This article builds on literature about bedding in Norway from the 1800s and survey questions from 1951. We ask the question: what materials have been used and why? Wool was used in all bed textiles, both closest to the body and the layers over and under, from the cheapest chopped rags to the most costly textiles. The decline was seen throughout the 1800 and 1900s, but only in the 1960s does wool become totally absent as a next to skin bed textile. The cheap imports of cotton made cottage industry and home production unprofitable and the new emphasis on cleanliness gave cotton a clear leverage.

Click here to read the full article (tandfonline.com)

Woolbed

lisbethl on 16. February 2016

Ingun Grimstad Klepp, Kirsi Laitala and Tone Skårdal Tobiasson

Summary

We have studied Norwegian and Swedish consumers’ experiences and perceptions related to using wool in bedlinen and sleepwear. We have used a variety of research methods including a web-based survey, qualitative interviews, a material test where informants commented various fabric samples, as well as user trials where informants tested sleeping in merino bedlinen and sleepwear. Informants were positively curious about bedding in wool. It appears that the change in use of wool follows a pattern where one context or setting is used as a springboard into a new setting. Important springboards among informants are; dressing their own babies in wool, next-to-skin underwear in sports, and tradition and handicrafts related to wool. Differences between Norway and Sweden are apparent in a different relationship to wool and to bedlinen. The market for woollen underwear is growing in Sweden and the differences between the two countries can thus be expected to decrease. Barriers related to hygiene, heat regulation, structure and softness are important in consumers’ thoughts about a wool-bed.

Click here to download and read the full report (oslomet.no)

Wool is a knitted fabric that itches, isn’t it?

lisbethl on 1. October 2014

Marie Hebrok and Ingun Grimstad Klepp

Abstract

In this article, we explore in what ways consumers’ preconceptions of wool influence their ability to recognize it as a fabric. Do we know that it is wool because it itches, or, conversely, does it itch because we think that it is wool? The analysis builds on three different methods; wardrobe studies, sample tests and interviews, in order to explore both informants’ visual senses, and also applied tactile senses. It aims to bring together social science and textile technology methodologies and understanding in order to understand the properties of wool. It does this through adopting a multisensory understanding of the material. The research aimed to explore the associations with and experiences of wearing wool. This, we argue is as important as the senses in the process of identifying woollen fibres. The research found that the strongest influences in fabric identification were: perceptions of use, fabric type and fibres, colour, structure patterns and the ‘feel’ of the fabric.

Click here to access the article (ingentaconnect.com).

Valuing Norwegian Wool

ingridha on 24. October 2012

Marie Hebrok, Ingun Grimstad Klepp, Tone S. Tobiasson, Kirsi Laitala, Marit Vestvik & Madeline Buck

Summary

Wool has been called the white gold and has warmed and brought joy to the Norwegian population throughout history. It is also a textile fibre with many unused features. The starting point of the project Valuing Norwegian Wool is a desire to help Norwegian agriculture, wool based industry, and design to exploit the potential inherent in Norwegian wool as raw material, and in the Norwegian textile tradition. Norway has a thriving textile industry and several strong companies that produce products made of wool. The marketing of the origin of the raw material these products are produced from is however rather inadequate and sometimes misleading. While fewer and fewer of the products are made of Norwegian wool, consumers – not without reason – take it for granted that Norwegian producers use Norwegian wool.

The project is funded by the Norwegian Research Council and led by SIFO. The project partners include representatives from the entire value chain – from agricultural organizations, industry and commerce, and design and consumption. This report is one of many publications in the project and makes visible the challenges that exist in the value chain, but also the great potential that is there.

Click here to read the full report (oda.oslomet.no)

Potential of Woolen Materials in Health Care

ingridha on 28. June 2011

Kirsi Laitala, Ingun Grimstad Klepp, Marit Kjeldsberg & Kjersti Eilertsen

Paper

Abstract

Woolen textiles may have more potential use areas within the health care than what they are used for today. They have many benefits such as being self-extinguishing, flexible, and having high isolation as well as moisture absorption properties. While absorbing moisture it releases heat, and as the evaporation rate is slow, woolen materials do not give a rapid chill that some other faster drying materials have. Therefore wool can hold lot of moisture before feeling wet. Due to wool’s potential to shrink in wash, the challenge has been how to wash wool to get it clean enough for health care use. Laboratory experiments were designed in order to see woolens’ tolerance to different washing treatments, as well as their properties related to soil repellence and stain removal.

The results showed that wool tolerates to be cooked without causing additional felting shrinkage, as well as spin dried at high velocity (at least 1400 rpm), as long as there is no mechanical action that could cause the fibers to get entangled. Therefore, the acceleration and slowing-down phases of spin-drying program have to be rapid, so that the centrifugal forces will keep the garments trapped in place against the walls of the drum. Especially untreated woolen fabrics showed good soil repellence against water based soils, as the outer layer of woolen materials is hydrophobic. However, if the staining occurred it was more difficult to get wool clean than synthetic fabrics. Cotton got even more soiling, but it tolerates more efficient washing and detergents than wool does. Wool has potential to replace some of the materials that are more commonly used in health care today, such as cotton, polyester and polyamide, and improve the use properties without compromising the hygiene. The frequent washing of textiles cause wear and tear, creates extra work as well as environmental consequences. Woolen products are washed less frequently than products mare of other fibers. Therefore, an increase in the use of wool can be a way to reduce washing frequency.

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