Research Point one

I’ve been a bit caught up with other stuff – Ukulele workshop and creating an Ebb and Flow quilt for the quilt show but I need to get back to OCA work. This is the first research point exploring yarn.

lurex.com Viewed 29 Jan 2018

I used to shy away from sparkly fabrics because I didn’t like the idea of metal in the yarn. Not sure if that is actually the case but interestingly on the Lurex web site I could not find out the composition. Trade secret I guess. Anyway I’ve had to come to grips with shine a bit in my ebb and flow quilt which called for sheers. Not lurex as such but I used sparkly nylon organza and tulle which dyed very well in the nylon with Landscape dyes and allowed me to overlap colours in an attempt to make a third colour. It was very stiff and scratchy though, especially after it had been heavily stitched, so I’ll be exploring tissue silk next. I have ordered a 3 mm silk gauze which I hope will be see through enough after dyeing.

Anyway that is a side thought. I didn’t learn that much from the Lurex site other than they have been around for quite a while and that the old video of the models shows the models looking much healthier and happier than the contemporary photos. They did talk about GIMP yarns which are yarns that have Lurex wound around a central core. This is what I’m effectively doing as I’m spinning fibre with a central thread. They did talk about having the core partially showing to change the effect. I have yarn like that with a cotton core and a thin polyester outer thread. It creates an interesting yarn with bobbles of cotton colour showing through the thin black thread. One thing I noted when knitting up with this sort of yarn is that it obscures the knit stitches and creates its own interesting texture. So no good if you are doing a fancy pattern to introduce texture, but good if you like the texture it creates itself.

Wikipedia tries to help with the composition of Lurex but says different things. It could be a core with metal fumed on, or it could be a metal filament with a coating.

http://www.lurex.com/Inspiration Viewed 29 Jan 2018

Pretty weird cut and paste image but I like the way the light on the fabric is forming its own pattern.

26 Feb 2018

Not really yarn but I’m going to look at Stone paper here.

This beautiful leaf print was done by my stepmother, Sandra Lacey, on stone paper. Stone paper is made from calcium carbonate from rocks and some sort of plastic binder.

It is really smooth with a low grade shine and very tough. It can’t be torn, only cut, and it combines the stiffness of paper with the flexibility of plastic in a material that feels almost cool and wet to the touch. Because of it’s inability to be torn I’ve found that I can use it for applications not usually associated with paper, like sewing and some of the yarn making explorations. It has a bit of a stretch to it as well and holds it’s folds and creases well. I’ve heard that it can’t be ironed but I did iron it under a cloth with no adverse effects. I was hoping to try and see if I could texturise it with a bit of heat but that didn’t happen at that heat. I will try with a heat gun at some stage. When I used a heat gun on yupo (synthetic paper) it quickly deformed and melted it, which could be used to some advantage I guess. Stone paper is waterproof and completely non absorbent. The plant print above adheres well but does come off on fingers a bit. I haven’t experimented with it with traditional drawing materials like charcoal and graphite, but I will do that in my drawing unit at uni. I suspect that it marks the paper but like using yupo it may wash or rub off. I found with yupo that I could rub in pastel and it would become more permanent. I will try with stone paper which I suspect has slightly more tooth than yupo.

Here I have sewn some dyed shreds of silk gauze on to a background of stone paper. Even with heavy stitching it doesn’t tear through and the needle just glides through it. I have now sewn this on to a pair of pants as a pocket, to put it through the wash and further test its resilience.

This is the back and you can see the stitch holes but they mostly don’t tear through. It provides a nice white background to gauze fabric too, and has retained enough flexibility for heavy clothing, pants, skirt or vest.

Below is from http://www.stonepaper.co.nz/about-rockstock Viewed 26 Feb 2017

About Rockstock

Rockstock is a revolutionary breakthrough in papermaking technology.

HERE’S WHY WE ARE EXCITED ABOUT ROCKSTOCK

Rockstock is the registered trade-name of a ground-breaking high quality, coated paper with outstanding environmental values that prints extremely well using standard inks.(No special inks are required.)

It can be used in most situations where conventional and synthetic paper is used and offers exceptional printing, water proofing and tear resistant qualities. Rockstock claims to be the world’s most environmentally friendly paper.

▪ It is manufactured from ground down waste stone and offcuts used in the building industry.  It contains no wood fibre.

▪ Rockstock has a low carbon emission

▪ It uses significantly less energy to produce than wood fibre paper.

▪ It generates no effluent in its manufacture.(water borne, airborne or solid)

▪ It requires no water,acid, base or bleach during production.

▪ Any trimmings or waste paper from production are recycled to make new paper.

▪ It is both  recyclable and photo-degradable (It is not bio-degradable as it dioes not attract insects or organisms to consume it.)

▪ Compostable (Commercial) where sufficient heat is present to leave only calcium carbonate.

▪ 2 main product ranges 1. S-Class (Sustainable Range) 2. R-Class (recycled range).

Sometimes confused with synthetic paper, Rockstock is neither synthetic nor pulp or fibre based and is termed “Rich Mineral Paper”. Rockstock has qualities of both  pulp and synthetic papers, but more importantly it is much more environmentally friendly than either of the two. The printing qualities and exclusive feel make Rockstock a paper product not seen the likes of previously.

Due to its absorbency attributes, it has superior handling and printing qualities.

It is also water, mist, grease, anti-moth and insect proof*, freezer grade.

Certain products can be heat sealed.

Being foodgrade,  Rockstock STN thermoforming boards are suitable for thermoforming food trays, containers and other packing items.(400-700micron.

Rockstock RPD will aslo”in-mould” label with great printed results.

Rockstock has unusual physical strength and high fold durability.

In addition of up to 81% ground-up mineral waste or CaC03, Rockstock contains a small amount of a non toxic photo-degradable PE resin.

Available in weights ranging from 20 microns  through 700microns in a wide variety of product options.

100/120/140/160/180/200 micron RP paper range

200/250/300/350/400 micron RB Board range

80/90/100 LRD low density range (density 0.8/0.9/1.0/1.1

80/90/100 LPD low density range (density 0.8/0.9/1.0/1.1

20-40 micron Supermarket singlet bags. Rockbag is a range of Singlet bags, bin liners, Trash sacks and Carry bags  made  from different versions of stone paper.

50/80 micron SP range

400/500/600/700 micron STN Thermoform range.

Rocktak is a self ahesive version of RPD stone paper.

Rocktherm DT and Rocktak DT are Direct Thermal versions of Rockstock.

1(*Note: If used for acidic foods Rockstock products with a eg. PE film barrier may be advised).

2(*Note: moth and insect proof by nature of the fact that insects, moths and organisms will not eat or degrade the stone product, rather than some deterrent characteristic or chemical. Hence it is not biodegradable but photo-degradable. To be biodegradable, insects or organisms  need to be able to eat/break down the product. Instead the suns strong UV will after  1 year for paper and 3 years for board in full sun, photo degrade Rockstock back to stone powder ). This is a much cleaner process rather than organisms consuming  doubtful substances in the food chain.

3(Note: Not suitable for Laser Printers or Photocopiers where extremely high heat is generated as this may distort the sheet)

What is Rich Mineral Paper (Rockstock)?

Rich Mineral Paper (Rockstock) is neither pulp nor synthetic made paper. Rich Mineral Paper is a combination largely (80.9%) of mineral powder (Calcium Carbonate) with a small amount (18%approx) of a non-toxic, recyclable, compostable, photodegradable resin (PE) to create an extremely environmentally friendly paper. Boards and other rockstock Products may have different proportions of Stone powder and resin to achieve different performance.

Due to this unique make up, Rich Mineral Paper (Rockstock) is made with minimal consequences to the environment. Not only is Rich Mineral Paper (Rockstock) a “Tree-Free” product, but also does not require water or use of fossil fuel as part of production. This break through product does not require bleach, or use strong acid to lighten or break down the components used to produce the Paper.

As a result the mills have been able to achieve something that no pulp based paper mills have been able to achieve. Rich Mineral Stone Paper mills create no air pollution, no toxic run off and no water pollution. No acid, base or bleach. No Halogens or phalates.

Most of all, it is so rewarding that Rich Mineral Paper does not require the harvesting of trees to produce the many varied products!

Calcium carbonate is an exceptional compound. The chemical formula CaCO3 stands for a raw material that exists everywhere in nature, dissolved in rivers and oceans, melted as “cold” carbonatite-lava and solidified as a mineral, dripstone or as parent material for whole mountain ranges.

Plants and animals need calcium carbonate to form their skeletons and shells, and even modern mankind could hardly imagine life without calcium carbonate. Almost every product of our day-to-day life contains calcium carbonate or comes into contact with it while being produced.

What is Calcium Carbonate?

Calcium carbonate accounts for more than 4% of the Earth’s crust. As a result, the three calcium carbonate minerals – calcite, aragonite and vaterite – are among the most important rock-forming minerals. And rocks are not the only calcium carbonate deposits in nature. Almost all stretches of water and countless plants and animals contain huge amounts of calcium carbonate as well. These natural resources are linked by the calcium carbonate cycle.

Plants and animals absorb calcium carbonate in water, where it exists in most cases dissolved in the form of calcium hydrogen carbonate Ca(HCO3)2, and use it to build up their skeletons and shells. After their death, mussels, coccoliths, algae and corals form sedimentary deposits on sea-beds. And the rock forming process is set in motion.

The first stage is the sedimentation process, from which chalk and limestone originate. Chalk is a poorly compacted sedimentary calcium carbonate rock, whose diagenesis is incomplete.

A completed sedimentation process results in the formation of limestone. If the sedimentation process takes place in magnesium containing water, a dolomitization may result. Part of the calcium ions in the crystal lattice are replaced by magnesium ions, leading to the formation of dolomite

CaMg(CO3)2.

Marble is a metamorphic rock resulting from the recrystallisation of limestone under high pressure and temperature. Whether chalk, limestone, dolomite or marble, all carbonate rock is subject to erosion. It dissolves under the influence of wind, temperature and water, and the cycle is ready to start anew.

The World of Calcium Carbonate

Calcium carbonate rock occurs throughout the world and is readily available. This explains why it has been among the most widely used raw materials for more than 5,000 years. The Ancient Egyptians built their pyramids out of limestone. However, the mining of industrial minerals is possible only in a few deposits world-wide. Extraction is only worthwhile if the purity, whiteness, thickness and homogeneity of the stone is appropriate, and even then intensive treatment is necessary to process top quality natural calcium carbonates (ground calcium carbonate (GCC)). Precipitated calcium carbonate (PCC) is a synthetic calcium carbonate, which in most cases is produced industrially by means of recarbonization.

Information about Calcium Carbonate from: www.omya.com

What are Coccolithophores?

What are Coccolithphores? Tiny coccolithophores have had a big impact on the planet over time. Though they are single-celled, these photosynthesising organisms are enclosed in a mosaic, or  cage, of microscopic plates that make many very beautiful to look at. The plates are made of calcium carbonate, which the coccoliths pull from the surrounding water. As these small organisms live and die in their trillions, they bequeath their tiny plates to the ocean floor where they form rocks such as chalk and eventually marble. Over geological time, coccoliths have removed significant amounts of the greenhouse gas carbon dioxide from the atmosphere, helping to keep Earth cool as the sun grew hotter.

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