Posts Tagged ‘polyethylene’

h1

Paint Test on Tyvek Synthetic Fabric

June 11, 2018

Following up on the Tyvek fabric that I showed in my previous post, I wanted to show some paint tests on it using both oils and acrylic paints. In the photo above I painted a few sample swatches of each using different tools and methods. As a reminder, this is a 9×12 inch sheet of polyethylene fabric, “Tyvek” brand, mounted to mat board with acrylic gel.

For the oil paint on the left I used stiff a hog brush and soft sable, as well as a paint knife. Some areas were thinned with mineral spirits, or wiped down with a soaked rag. All of this worked out fine. There were a couple problems to point out, however. In the center yellow area, I used a stiff brush soaked with spirits, and scrubbed the surface hard. This caused the fabric to come unglued from the backing in that area (see the image below.) The other problem happened scraping lines with a metal paint knife. When I applied a lot of pressure it caused the thin fabric to tear. Although it is tear resistant, it’s not tear proof when using a metal tool. Otherwise, it works very well with oils. Since this surface is slightly porous, if your backing is a paper product I recommend sizing it properly if you will be using oil paint on this.


.
.
In the acrylic paint section everything worked well with the range of tools I tested. This included the same type of brushes as used with the oil, a paint knife, a rag, and also acrylic paint markers (DecoColor & Molotow.)

Above are a couple things to point out about using acrylic paint. With a metal paint knife I was able to scratch through the paint surface rather easily after the paint had dried. It’s an interesting effect, but also shows that the adhesion is not perfect, but acceptable. This layer (left image above) of burnt umber was painted with a stiff brush in the top area, and again below it with water added. You can see how the water beaded up as it dried. When using a wet soft sable brush, this was less noticeable. The paint also takes a little longer to dry on this surface than it does on regular paper. After a minute or so I was able to wipe it off almost completely with a damp rag. In these closeups you can also see a small square grid pattern showing through from the fabric where the paint is thin. The square is only about 1 mm. It’s less noticeable in areas where the paint is more opaque.

Keeping these points in mind, I would still have no problem using this as a paint surface for oils or acrylics. Being synthetic, it wouldn’t have some of the aging or humidity problems that come with natural fiber canvas. It’s also very inexpensive, and comes in large size rolls. I may do another test using water-based paints of gouache and casein, as well as different drawing media, so stay tuned.

Advertisements
h1

Using Tyvek Polyethylene Fabric for Artwork

June 9, 2018

I recently purchased a large sheet of synthetic fabric that I wanted to experiment on as a painting surface. It’s called “Tyvek,” made by DuPont, and is a paper-like fabric made of polyethylene fibers. There are different brands out there that have different textures, and other features. The sheet I bought is 60×52 inches, and came folded in a letter sized envelope. I’ve seen rolls of it in larger sizes at hardware stores with “Tyvek” printed on it in large type. This was blank, and other brands in rolls may be also. This sheet is 43 GSM (grams per square meter) which is very thin, but it’s extremely tear resistant. Some other brands I’ve seen have a puffed up canvas-like texture, but this is smoother.

The folded sheet has creases, but I was able to mount it to a scrap piece of 9×12 inch mat board, and that removed the crease. In the picture above, the Tyvek board is on the left. I used an acrylic gel medium, and also painted the back of the mat board with a single coat to flatten it out when it dried, and then folded over the edges of the fabric to the back.

In this photo above you can see what looks like wrinkles, but it’s actually very smooth. These are fibers that leave wavy streaks of matte and sheen lines that looks something like wood grain. If you wanted to leave areas unpainted this would be seen, but an opaque coat of paint would hide it.

Here I’ve scribbled some ink lines to on the back to show an example of what that media looks like on this surface. Even though it’s soft to the touch, it does have a texture. You can see a grid of square lines running through it like a canvas weave. A thick paint layer would cover that, but thin washes would not. That’s not necessarily a bad thing, but something to keep in mind. I used sumi ink with a brush, a PITT brush pen, and a ZIG Millennium marker. Markers draw well on this in general, but water based inks may bead up some. Metal dip pens don’t work so well, tending to snag on the surface. Dry media, like charcoal or pastels work okay, but this is a little too smooth to be ideal for them. Hard leads of graphite or wax pencils don’t work very well either.

Once I figure out what to paint on this, I’ll show an example of how it performs with paints. I may just paint example swatches and nothing in particular, but I’ll still wait for a later posting.