LEATHER:
Leather is a flexible material produced by tanning the raw skin of animals. People use leather to make goods such as bags, shoes, jacket, shirts, belts, leather wallpaper, furniture covering , harnessess, saddles etc .
REQUIREMENTS TO PRESERVE LEATHER LONGLASTLY:
For the manufacturing of leather we require following steps.
LEATHER SALTING:
Salt is used to preserve the raw skin of animals and it prevents the skin from spoiling for a very long period of time. For better result salt is spreaded in such a way that no single part of skin will be left and after this a dry-salted material is produced.
SOAKING:
The dehydrated raw material is then rehydrated before it can be subjected to extended mechanical action.Water is also used for chemical penetration.
UNHAIRING
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Chrome tanning is better technique because it produces leather that is very water resistant. At the same time, the leather feels soft and can be dyed with a wide variety of colors. The colors tend to set well and stay vibrant with the passage of time. It does not lose shape in water . The chrome tanning leather process also produces leather that endures heat better. Leather that is chrome-tanned have long life and this technique is also inexpensive.
In chrome tanning chromium sulphate and other chromium salts are used. The acidity of hides once they have finished pickling will typically be between pH of 2.8-3.2. At this point the hides are loaded in a drum and immersed in a float containing the tanning liquor. The basic principle is the same, removing water molecules from the collagen and replacing them, but the process is much quicker using chrome which is the most popular mineral tanning agent today. The whole process can be automated and finished in a day, and the chrome ions displacing the water and binding with the collagen are much smaller than vegetable
Every young girl or woman in America wants their image to look like a Barbie doll. This perfection includes being extremely skinny and extremely tan. In order to achieve this Barbie-like image women and men have been using tanning beds or spray tans to alter their appearance. Tanning beds can prove to be very harmful to a person’s health and can cause extremely dangerous medical conditions, including the most deadly type of cancer. However, fake tans can also be used in a positive way for some people who use them sparingly.
I found that there is always unintended events or problems that occur because of salt. For example, if the Egyptians did not depend on salt for mummification, would they still be as obsessed to own a large load of it? Also, if the church had not restricted meat, would the need for salt be forgot instead of advertised to the world? Salt: A World History is very bias based on the fact that the author believes salt is one of the greatest things to happen. Kurlansky repeatedly reminds the reader that without salt, certain wars or cuisines would never come to
Common salt is necessary in everyday lives because it carries vital substances. It also has many uses, but is found to be used in food only one percent of the time (McGrath and Travers, 1999). It is used to clear ice and snow off of roads, during the production of chlorine, in livestock feeding, to preserve foods, and to improve the taste of some foods. (Aasen, et Al 1999).
First of all, the history off the tanning bed did not start when tan skin was hip. The first indoor tanning lamp was created for medicinal purposes in 1906. It was used on ricketts patients to help them develop stronger bones .# How does a tanning bed create stronger bones? Sunlight produces vitamin D in the body, which allows absorption of calcium. The absorption of calcium creates stronger bones. This tanning lamp was not thought about again until the 1970s, when a man named Friederich Wolff came along. Wolff used “artificially produced indoor tanning UV light to study athletes and how they might benefit from more exposure to sunlight.”# The artificial indoor light also gave the subjects of his study a darker complexion. In the fifties, the invention of the bikini popularized tanning outdoors significantly.# This trend still remained in the seventies.
The look and feel of leather exudes elegance, style, and strength. It makes any plain object appear extra ordinary. This is how powerful a leather is.
Tanning is a commonly used by Caucasian women to cause their skin tone to darken. Melanin is what gives skin its color. Naturally, when we are exposed to sun, the production of a pigment known as melanin starts which itself acts as a deterrent to the burning effects of ultra violet rays of sun (Pakhare). Some Caucasians find it necessary to tan to increase beauty. It is not necessary to tan to increase beauty.
Well-known magazines often have broad headlines that show off celebrities sporting bronzed skin, and these articles often throw around the words “healthy” and “glowy” in a positive context. With this influence subjected upon the general public, indoor tanning has become a popular recreation of American men and women alike. As this new trend continues to rise, medical researchers are beginning to pay close attention to the health effects of indoor tanning, especially when referring to tanning beds, respectively. Through many recent case findings and studies, scientists have linked the use of tanning beds to many dermal health problems including types of skin cancers that are deadly. Despite the fact that tanning beds are detrimental to the dermal health of its victims, the use of tanning beds is on the rise and growing.
Imagine you’re leaving for spring break in two weeks, and you’re the palest of all your friends. Its way too cold outside to try and tan, and a spray tan won’t last. You don’t want to be super pale on the beach next to all your tan friends, so against what a lot of people say, you go to a tanning salon and try a tanning bed. But, it’s so confusing why everyone says this is so bad for you when there are so many safety regulations for tanning beds. This is very important to think about because everyone makes tanning in a tanning bed sound so scary, but there are many reasons why it is just as dangerous as rays from the sun.
The greatest danger from this problem is faced by teenagers. Studies have shown that among artificial tanners, those who started at an early age are more likely to develop skin cancer. Out of high school-aged girls, 51 percent reported using a commercial tanning bed at least four times in the past year (Perron). The fact of the matter is younger people do not have the foresight to realize that being tan isn’t worth the sometimes fatal after-effects.
Many people strive to have beautiful, flawless, and tanned skin. In order to get that desired even bronzed glow year round, many people partake in the use of tanning beds, and tanning salons in communities throughout the country. Over the years, indoor tanning use has increasingly become more and more popular among adolescents and young adults. Tanning beds are equipped with special lightbulbs that emit ultraviolet, or UV, rays. These UV rays much like exposure to the sun, can harm the various layers of the skin. In a recent observation, it has been discovered that tanning beds cause what can be potentially severe health problems. Indoor tanning is dangerous because of the increased risk of multiple health problems, not the least of which is
helps prevents the risk of blood pressure. Another is to eat food that is low on salt and high in
In the early 1800s, lace made materials are much expensive than the crochet products. In Europe, some communities use crochet products to identify their social status, which only indicate that they can afford crochet products and other lace made items. The craft of crocheting only requires less expensive supplies and materials, which are commonly threads and yarns that they can purchase in nearby markets.
Fabrics can be made of natural and synthetic materials. Natural fabrics, like cotton (NY Fashion Center) for example, are found here on earth while synthetic fabrics are manmade (MV Styles). There are many distinguish ways to determine if a fabric is natural or synthetic. Each fabric is different in its own way due to it reaction to heat, its odor, residue and chemicals (MV Styles). Fabrics are seen and used every day and in every way. Synthetic material has been pushed more into the picture because it much easier to make and the cheapest to buy. Synthetic materials are sometimes made form fossil fuels like coal. Cotton and Broadcloth are natural fabrics; Polyester is synthetic and Flannel in a synthetic blend with cotton. Fabrics are made up of fibers which have their own chemical structure, which determines their classification. Polymers make up the fibers (Ball-Deslich and Funkhouser). Since cotton is natural, it comes from a natural cellulose fiber with the polymer of glucose (Cotton). Polyester is synthetic which can be classified as saturated or u...
Nearly every person in the world uses salt or some form of a salt as there are many salts in the world. In America alone we use a lot of salt every day we are one of the top salt using countries in the world. Salt has a part in many things in everyone’s daily lives. Salt has many important things to it such as its crystallization, what salt is and ammonia.
Textile industry plays a very important role in fulfilling human needs. The industry contributes to produce garments and apparels that human used in their everyday lives. Different types of textiles are used widely by humans in their activities. They used it to cover their bodies, cover their food or ripe plants from animals and weather, to coat their furnitures, and sometimes also used to assists them in sports.