Showing posts with label Testing. Show all posts
Showing posts with label Testing. Show all posts

July 07, 2009

Wedding Dress Care-Content Labeling

Care content label in a wedding dress

This article now has a follow-up blog entry with some corrections and additional opinions. Your comments are welcome, but hateful or spammy comments will be deleted.

As I was working on the alterations for this wedding dress, I wanted to see other dresses by this designer/maker. Perhaps the sleeve pattern shaping was intentional and not a mistake? Perhaps the problem is consistently found in other styles? I had no idea who the designer was, only where the dress was purchased. The dress was not in the store's web catalog and the only label in the dress was not helpful. The dress was missing a brand label and had no RN number. Further, the care instructions were rather bizarre/interesting (click on the picture for a closer view). I googled the style number and came up empty.

At a minimum, the dress should have had an RN number on the label. You can search an FTC database to find out the manufacturer of an apparel item. Wedding dress manufacturers/bridal shops have been fined in the past for failing to disclose or intentionally removing this information. Alterationists may remove the labels after purchase but should give them to the bride (links to come later as the FTC website was having problems when I wrote this).

The label states:

100% polyester
Do not dryclean
Spot clean ONLY
Use cold water and
mild soap
Made in China
See reverse for care
----------------------
Do not spray Alcohol
based product directly
on gown such as Perfume,
Hairspray....etc. This will
damage beadworks and
embroiderie designs made of
Rayon, Nylon, and other
synthetic materials.

I found the care instructions rather hilarious. How many of you spot cleaned your wedding dress with only cold water and mild soap? The fabrics themselves probably could be dry cleaned or even hand washed (though that may be more work). The beads will probably dissolve in the dry cleaning solvents, so thus the "do not dry clean" instructions. But, if you can find a reputable dry cleaner who will clean the dress and avoid the beads, then go ahead and have the dress dry cleaned. Otherwise, hand wash the dress. BTW, there were no further care instructions on the back of the label. Many wedding dresses are currently manufactured in China, which may explain the poorly written tag.

The extra instructions are interesting. I suppose it is possible that perfume or hairspray may damage the beads. Though the bride would probably need to be drenched in it before the beads dissolved. Sure would like to put those beads to the test....

The label should have been written to say:

100% Polyester
Hand wash or
Spot clean
in cold water with
mild soap. Hang to
dry. Do not bleach,
Do not iron.
Made in China
RN12345 ( ------ Made up)
---------------------
Avoid the use of
Alcohol based products
such as hairspray,
perfume, etc., as these
may damage the dress.

And of course, the care instructions should be thoroughly tested by the manufacturer. Good industry practice (and the government) dictate that a manufacturer should have a reasonable basis for the cleaning instructions. This means actual test data recorded and stored with the manufacturer. At this point in time, manufacturers (except children's clothing manufacturers) can do their own in-house wash testing. Children's clothing manufacturers will have to have it done by a certified laboratory. Wash testing is not specifically mentioned in the CPSIA, but it does imply that ANY testing will have to be done in a certified lab.

January 07, 2009

Accounting for shrinkage and/or stretch in sewing patterns

Leggings and pants

Just a few comments I made in the Fashion Incubator forum when making patterns to accommodate stretch (knits, stretch wovens) and/or shrinkage.

Have to be careful when scaling patterns in CAD. Shrinkage/stretch is not proportionally the same in both directions. Many pattern making books advise to add the same amount of change to the length as the width. Don't do this. The only way to know is to know the fabric. Things shrink more in length than width. I am so sick of washing pants and long sleeve shirts and having them end up too short. If anything, remove width ease and add length on knits. It sounds counter-intuitive but prevents high-waters. Not sure on stretch denims, so test, test, test.
In my Etsy shop I have a simple tech pack kit that includes a wash testing form. The wash testing form includes instructions and formulas to figure out shrinkage in both the length and width of a fabric. It is well worth the investment of time and money to test your fabrics for shrinkage, particularly knit fabrics. Once you know the approximate shrinkage of a knit fabric, I recommend adding the extra width and length needed to accommodate expected shrinkage.

Adding a shrinkage allowance to a pattern piece may cause the finished garment to look proportionally wrong. If you do not pre-wash the finished item before shipping to the retailer, the item may look wrong on the hanger and the customer may decline purchasing the item because it does not appear to fit. So there is a limit to the amount of shrinkage you can include in a pattern before proportions, fit, and hanger appeal are impacted. Generally, you can include about 3-5% shrinkage in a pattern without too much of an impact. If your wash testing results return a shrinkage greater than 5%, then you either need to reject the fabric or pre-shrink the fabric before cutting and sewing.

Knits in particular add an added layer to product development because they are more likely to shrink. There are various types of knit fabrics with different types of finishing. Some knits are pre-shrunk at the factory and some are not depending on whether the fabric will be printed or dyed at a later date. When sourcing knits it is important to ask about shrinkage.

Accounting for stretch in knit fabrics is also another added layer. Stretch influences fit. Should the item fit close to the body? If so, the pattern needs to be reduced in width and length. This is another area where the amount to reduce will be different for the length and width. As an item is stretched in one direction, the other direction also changes. You may notice this when you stretch a knit t-shirt in the width direction - the length of the t-shirt will shorten. This is a complex topic and the answers depend entirely on the style and chosen fabric.

November 13, 2007

Lead Test Kits





I had a light bulb moment. Why not use this kit to test trims like buttons, zippers, and metal trims. When I buy buttons, I have no idea where they come from because I buy them from a jobber. All I receive is a bag of buttons. Lead testing at a certified lab can be expensive, not to mention the extreme backlog that is occurring right now. Lead tests start at $35 and can vary by lab. (BTW, getting pricing information is extremely difficult and requires lots of phone calling). Why not use one of these kits?

Consumer Reports states that the kits are only useful for detecting high concentrations of surface lead. False positives/negatives are a real possibility. The CPSC says there are no reliable home lead test kits. The CPSC is in conflict with Consumer Reports and it is difficult to know who to believe. CR actually used the test kits to check toys in actual use by children. Any toys that indicated high lead levels were sent for further testing. The results were surprising as they found some toys not on any recall list with extremely high levels.

While no one should rely solely on the home test lead kits for definitive information, I think it could at least give an indication of a problem. I may buy a kit despite what the CPSC says.

Here are some links to testing labs that require further research. At this point, I can't recommend one over the other. These labs can test for lead as well as most textile testing.

Intertek
STR - lab highlighted by an ABC news article, also does textile testing
Bureau Veritas - formerly Acts Testing