2 needle chain stitch

Finally, the rise of electric and autonomous vehicles has introduced new design philosophies that challenge traditional automotive manufacturing. Automotive sewing machines are adapting to these changes, allowing for the integration of new technologies such as smart textiles that can interact with electronic systems within the vehicle.

These innovations not only enhance the user experience but also improve the adaptability of the machines to various sewing tasks. With the integration of technology, manufacturers can produce more complex designs and styles that cater to changing fashion trends.

To use a manual lockstitch sewing machine, one must first prepare the machine by winding the bobbin and threading the needle. Once the fabric is placed under the presser foot, the user can start sewing by pressing the pedal. The stitch length can often be adjusted depending on the project requirements, from fine seams for delicate fabrics to longer stitches for heavier materials.

1. Universal Needles Great for general sewing tasks, these needles work well with a variety of fabrics, from woven to knit materials.

Moreover, the machine's simplicity in design contributes to its ease of maintenance. Regular oiling and basic upkeep can extend its lifespan significantly, making it a cost-effective investment for businesses and individuals alike. Many users also find that the learning curve is manageable, allowing new operators to become proficient quickly.

In a study published in the journal Toxicology, researchers examined the effects of exposing human colon cancer cell line (HTC116) titanium dioxide food additives in vitro. “In the absence of cytotoxicity, E171 was accumulated in the cells after 24 hours of exposure, increasing granularity and reactive oxygen species, inducing alterations in the molecular pattern of nucleic acids and lipids, and causing nuclei enlargement, DNA damage and tubulin depolymerization,” the scientists wrote. Researchers removed the additive from the culture, then examined the results 48 hours later. They found, “The removal of E171 was unable to revert the alterations found after 24 h of exposure in colon cells. In conclusion, exposure to E171 causes alterations that cannot be reverted after 48 h if E171 is removed from colon cells.”

Le lithopone a été découvert dans les années 1870 par DuPont. Il a été produit par la Krebs Pigments and Chemical Company, entre autres¹. Il se faisait en différents grades, en fonction de la teneur en sulfure de zinc. Les qualités « bronze » et « or » contenaient 40 à 50 % de sulfure de zinc, ce qui les rendaient particulièrement couvrantes². Bien que ce pigment ait atteint son pic de popularité autour de 1920, il s'en produisait encore annuellement plus de 220 000 tonnes en 1990. Il est principalement utilisé dans les peintures, les pâtes et les plastiques³.