Sling sewing machine

Free-motion sewing opens up a world of creativity for those daring enough to explore it. Rooted in the art of quilting, this technique enables sewists to manipulate the fabric under the pressure foot, creating intricate designs and patterns. By moving the fabric in unpredictable ways, artists can produce stunning works that often resemble paintings. This spontaneity is what makes free-motion sewing a beloved choice for those looking to infuse their personality into their projects.

In the world of textile crafts, the right tools can make all the difference. Heavy-duty sewing and embroidery machines are essential for professionals and enthusiasts who seek durability, efficiency, and versatility. These machines are designed to handle a variety of materials, from thick fabrics like denim and leather to delicate materials like silk and tulle. This article explores the benefits, features, and considerations when choosing a heavy-duty sewing and embroidery machine.

Benefits of Self-Threading Sewing Machines

Using a double needle also saves time, especially when you need to create consistent, parallel stitching lines

zinc sulfide content, %

According to data released by the China Coatings Industry Association, the total production of China's coatings industry has increased from 12.72 million tons in 2012 to 24.388 million tons in 2019, with a compound annual growth rate of 9.7%. Coatings, as an intermediate commodity, are closely related to downstream consumer markets such as the automotive industry, real estate, infrastructure, and home furnishings.

Although the evidence for general toxic effects was not conclusive, on the basis of the new data and strengthened methods we could not rule out a concern for genotoxicity and consequently we could not establish a safe level for daily intake of the food additive, commented Matthew Wright, member of the EFSA's Food Additives and Flavourings Panel in a press statement.

In the paper industry, art painting supplies level, use as a white opaque pigment for a variety of printing paper filler, white pigment for pencils, watercolors, art painting.

Overall, the use of titanium dioxide by manufacturers is essential for various industries, providing valuable properties and benefits for a wide range of products. As technology advances and new applications are discovered, the demand for titanium dioxide is expected to continue to grow. Manufacturers will need to adapt and innovate to meet the evolving needs of their customers while ensuring the safety and sustainability of their products.

Research has shown that, when ingested as a food additive, titanium dioxide and its nanoparticles can impact, alter, and/or damage important protective bacteria in the gut, along with the metabolic pathways of gut bacteria.

Fluorine Chemical, Lithopone 30% CAS No. 1345-05-7, white powder, relative density: 4.136 ~ 4.39 g / mL, insoluble in water. It is a mixture of zinc sulfide and barium sulfate. Inorganic white pigment, widely used in plastics such as polyolefin, vinyl resin, ABS resin, polystyrene, polycarbonate, nylon and polyoxymethylene, and white pigments of paints and inks. It is less effective in polyurethane and amino resins and less suitable in fluoroplastics. It is also used for coloring of rubber products, paper, varnish, tarpaulin, leather, watercolor paint, paper, enamel, and the like. Used as a binder in the production of electric beads.

The pigment’s low Mohs hardness produces low abrasion compared to TiO2.

Specification:

Sulphate process. The ilmenite is reacted with sulphuric acid giving titanium sulphate and ferric oxide. After separation of ferric oxide, addition of alkali allows precipitation of hydrous titanium dioxide. The washed precipitate is calcined in a rotary kiln to render titanium dioxide. The nucleation and calcination conditions determine the crystalline structure of titanium dioxide (e.g. rutile or anatase).

In a study published in the journal Environmental Toxicology and Pharmacology in 2020, researchers examined the effects of food additives titanium dioxide and silica on the intestinal tract by grouping and feeding mice three different food-grade particles — micro-TiO2, nano-TiO2, and nano-SiO2.  With all three groups, researchers observed changes in the gut microbiota, particularly mucus-associated bacteria. Furthermore, all three groups experienced inflammatory damage to the intestine, but the nano-TiO2 displayed the most pronounced changes. The researchers wrote: “Our results suggest that the toxic effects on the intestine were due to reduced intestinal mucus barrier function and an increase in metabolite lipopolysaccharides which activated the expression of inflammatory factors downstream. In mice exposed to nano-TiO2, the intestinal PKC/TLR4/NF-κB signaling pathway was activated. These findings will raise awareness of toxicities associated with the use of food-grade TiO2 and SiO2.”

Still many experts say the body of research does not support the current health concerns being expressed about titanium dioxide.

For a review published in 2023 in the journal Environmental Pollution, researchers examined E171 as a possible factor promoting obesity-related metabolic disorders. Because gut microbiota play an important role in immune function maintenance and development, and because titanium dioxide as a food additive has been shown to alter gut microbiota, researchers wanted to review “the dysregulations along the gut microbiota-immune system axis after oral TiO2 exposure compared to those reported in obese or diabetic patients, and to highlight potential mechanisms by which foodborne TiO2 nanoparticles may increase the susceptibility to develop obesity-related metabolic disorders.” The study authors discovered recurrent changes in the gut microbiota composition when exposed to titanium dioxide nanoparticles, with an imbalance of intestinal symbiotic microbiota. These changes and imbalances were also reported and played a role in the development of obesity, the authors wrote. This highlights “foodborne TiO2 nanoparticles as an endocrine disruptor-like chemical promoting obesity-related disorders,” the authors concluded.

In Europe, the downstream paints and coatings sector presented weak demand in front of the titanium dioxide manufacturers, and thus, the titanium dioxide price trend experienced a gradual decline in its trajectory. Additionally, the pressure of inflation and increasing bank interest rates lowered the spending appetite of consumers which had an adverse effect on the titanium dioxide price trends. Further, the export and import of titanium dioxide were also caught under the negative influence of the poor economic conditions of the market.

Scrap zinc or concentrated zinc ores are dissolved in sulfuric acid, the solution is purified, and the two solutions are reacted. A heavy mixed precipitate results that is 28 to 30% zinc sulfide and 72 to 70% barium sulfate.

Titanium dioxide is widely used as a color-enhancer in cosmetic and over-the-counter products like lipsticks, sunscreens, toothpaste, creams, and powders. It’s usually found as nano-titanium dioxide, which is much smaller than the food-grade version (7Trusted Source).