Washing Clothes

ingridha on 30. October 2023

Ingun Grimstad Klepp & Kirsi Laitala

Clothes must not only suit the user and the occasion but also be clean for us to be well dressed. The meaning of cleanliness and the methods to achieve this goal has changed throughout history, but it has been central in our clothing practices. In this chapter, we will show how the understanding of dirty and clean clothes and the work of keeping them clean has changed in the last 200 years. The starting point will be the laundry in Norway, but when we discuss the more current times, the global washing practices will be included. As important as these technical and aesthetic questions are the cultural aspect. How have the perceptions of what is clean and what is dirty changed, and what consequences does this have for being well-dressed and for the work with the laundry? We discuss the growth in the amount of laundry, and after the 1970s also the decline in finishing work, especially related to removing the wrinkles. The technical and aesthetic aspects are important, such as whiteness, stains, and not least, odors. The chapter concludes with a discussion of the environmental impacts of laundry, including consumption of water, chemicals, and energy, and spreading of microplastics.

Book chapter in The Routledge History of Fashion and Dress, 1800 to the Present (taylorfrancis.com)

Textile Cleaning and Odour Removal

ingridha on 18. March 2022

Kirsi Laitala, Ingun Grimstad Klepp & Vilde Haugrønning

Consumers’ textile care practices today are characterized by frequent laundering. The importance of the removal of odours has increased, especially the smell of sweat. This chapter summarizes knowledge about removing odour from textiles. It provides information on suitable cleaning methods for different textile fibres and types of soils. The considered cleaning methods include laundering, stain removal, airing, hand wash, and professional cleaning methods. The cleaning result from laundering depends on water, washing temperature, length of washing cycle, types and amounts of laundry chemicals, and mechanical agitation applied. Textile material and type of soil that needs removal will determine the right mix of these factors.

Inherent fibre properties affect the soiling characteristics of garments. Comparisons of odours retained in textiles have shown that wool has the least intensive odour, followed by cotton, and synthetic polyester and polyamide garments have the most intense odour. Most textiles can be washed with water and detergents, which are more efficient in the removal of many odorous soils than dry-cleaning, but low-temperature laundering and/or lack of chemical disinfectants such as bleaches can contribute to odour build-up in textiles and in the washing machine. These aspects contribute to the environmental impacts of textiles.

Book chapter in Odour in Textiles: Generation and Control (taylorfrancis.com).

The Consumer Perception of Odour

ingridha on 18. March 2022

Ingun Grimstad Klepp & Kirsi Laitala

Human olfaction sense is one of the highly underestimated senses since historical times. Fortunately, this has changed in recent times, as the perception of odour or scent by people has received increasing attention through several research works from different scientific disciplines. Our sense of smell and scent affects our lives more than previously assumed, influencing how we think, act, and behave. Odours both evoke and create memories. The perception of odours is also culturally and situationally dependent. However, there is still a lot that we don’t know about the influence of odour or scent on an individual’s characteristics and odour studies are hindered by the lack of vocabulary. The effect of pleasant odour on the shopping behaviours of customers is one highly researched area, while very few studies have focused on body odour perception. Most of the time body odour is related to self-hygiene and cleanliness, but understanding about the complete social aspects behind odour perception by humans is still at an infant stage. This chapter reviews the current status of consumer research on body odour and environmental odour or scent perception. The chapter also addresses the role of textile materials on body odour perception.

Click here to see the book chapter in Odour in Textiles: Generation and Control (taylorfrancis.com)

Laundry Care Regimes: Do the Practices of Keeping Clothes Clean Have Different Environmental Impacts Based on the Fibre Content?

ingridha on 12. September 2020

Kirsi Laitala, Ingun Grimstad Klepp, Roy Kettlewell & Stephen Wiedemann

Abstract

Clothing maintenance is necessary for keeping clothing and textiles functional and socially acceptable, but it has environmental consequences due to the use of energy, water and chemicals. This article discusses whether clothes made of different materials are cleaned in different ways and have different environmental impacts. It fills a knowledge gap needed in environmental assessments that evaluate the impacts based on the function of a garment by giving detailed information on the use phase. The article is based on a quantitative wardrobe survey and qualitative laundry diary data from China, Germany, Japan, the UK and the USA.

The largest potential for environmental improvement exists in reducing laundering frequency and in the selection of washing and drying processes, and through a transition to fibres that are washed less frequently, such as wool. Adopting best practice garment care would give larger benefits in countries like the US where the consumption values were the highest, mainly due to extensive use of clothes dryers and less efficient washing machines combined with frequent cleaning. These variations should be considered in environmental assessments of clothing and when forming sustainability policies. The results indicate the benefits of focusing future environmental work on consumer habits and culture and not only technologies.

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

Microfibres from apparel and home textiles: Prospects for including microplastics in environmental sustainability assessment

ingridha on 12. October 2018

Beverly Henry, Kirsi Laitala & Ingun Grimstad Klepp

Abstract

Textiles release fibres to the environment during production, use, and at end-of-life disposal. Approximately two-thirds of all textile items are now synthetic, dominated by petroleum-based organic polymers such as polyester,polyamide and acrylic. Plastic microfibres (b5 mm) and nanofibres (b100 nm) have been identified in ecosystems in all regions of the globe and have been estimated to comprise up to 35% of primary microplastics in marine environments, a major proportion of microplastics on coastal shorelines and to persist for decades in soils treated with sludge from waste water treatment plants.

In this paper we present a critical review of factors affecting the release from fabrics of microfibres, and of the risks for impacts on ecological systems and potentially on human health. This review is used as a basis for exploring the potential to include a metric for microplastic pollution in tools that have been developed to quantify the environmental performance of apparel and home textiles. We conclude that the simple metric of mass or number of microfibres released combined with data on their persistence in the environment, could provide a useful interim mid-point indicator in sustainability assessment tools to support monitoring and mitigation strategies for microplastic pollution. Identified priority research areas include: (1) Standardised analytical methods for textile microfibres and nanofibres; (2) Ecotoxicological studies using environmentally realistic concentrations; (3) Studies tracking the fate of microplastics in complex food webs; and (4) Refined indicators for microfibre impacts in apparel and home textile sustainability assessment tools.

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

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)

Global laundering practices: Alternatives to machine washing

ingridha on 15. October 2017

Kirsi Laitala, Ingun Grimstad Klepp & Beverly Henry

Abstract

This article discusses laundering practices around the world including alternative methods such as washing by hand, airing, steaming, and dry-cleaning. These methods, which have received little attention in research, are often more suited to products made of wool, silk or other materials able to be cleaned using gentler techniques than more commonly used fibers such as cotton and synthetics. The material is based on extensive literature review from the past 20 years and reanalysis of previously unpublished survey data. The results show that washing by hand is common and that is the main laundering method in most rural areas of developing countries, but also significant for smaller portion of laundry in developed countries. Dry cleaning is less common, and mainly used for specific clothing items. Simple method such as airing can reduce the washing frequency, and thus reduce the environmental impacts resulting from the cleaning of clothes.

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

What’s the Problem? Odor-control and the Smell of Sweat in Sportswear

ingridha on 18. October 2016

Ingun Grimstad Klepp, Madeline Buck, Kirsi Laitala & Marit Kjeldsberg

Abstract

Sport and fitness are increasing in popularity, and so is awareness of body odor. Both are aspects people wish to gain control over, as promised by the marketing of sportswear with odor-controlling properties. This article discusses how the heightened awareness of body odor has developed, and how unpleasant odor varies between textiles made of different materials. A sensory analysis by a consumer panel was used to evaluate the odor intensity of 13 different fabric samples taken mainly from sportswear.

The so-called odor-control textiles smelled less intense than similar polyester samples without such treatment. Wool and cotton smelled significantly less intense than both odor-control and polyester when the samples were sweaty or aired. After washing, the odor-control textiles had a level of odor intensity that was in between that of the cotton and woolen samples. The odor-control treatment reduced the smell, but not enough to make a difference on laundering frequency, and the textiles smelled still more strongly than wool.

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

Patched, Louse-ridden, Tattered: Clean and Dirty Clothes

ingridha on 1. May 2015

Ingun Grimstad Klepp

Abstract

“Patched, louse-ridden, tattered—clean, beautiful, gem.” As children we recited this rhyme in Norwegian: “Lappete, lusete, fillete—ren, pen, edelsten,” as we picked petal after petal from a daisy. All the words can be understood as descriptions of the child’s future clothes. Clean is the turning point in the rhyme. Clean is thus seen as the first step on the way towards the gem, and it conveys here the same meaning as in the saying “whole and clean is the greatest finery.” Both emphasize clean clothes as crucial to the judgment of a person’s appearance. In the world of fashion it has been alleged that “anything goes.” This is probably true if we restrict “anything” to small variations in the look, decor, color, and style of clothes. However, our way of dressing also depends on more absolute norms.

This article explores the norms that deal with the relationship between clean and dirty clothes. Despite the fact that there is abundant research on cleanliness and laundering on the one hand, and clothes and clothes habits on the other, there are few points of intersection between the two fields. The article is an attempt at seeing these two themes in conjunction. It investigates how clothes, by being kept clean, make bodies socially acceptable. The article looks at how the demand for cleanliness varies in relation to age, gender, and class, and compares these demands to what we know about decency.

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

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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