assorted Archives - Page 9 of 11

Screen Printing

One method of decorating fabric is screen printing, in this, a pattern is painted onto a fine silk screen with resist emulsion. The core of the screen print process involves a fine mesh, or screen, which is stretched very tightly around an unyielding frame. Any area that is not to be printed, will be masked out on this screen or mesh. To create the print, the framed screen is positioned over the item to be printed along with a splodge of thick ink. The ink is pressed through the screen.

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Different kind of stitches

One unit of confirmation of thread resulting from repeatedly passing a strand or strands or loops of thread into or through a material is called a stitch. There are two basic stitch formations, lock stitch, and chain stitch. In all cases, the stitch develops from the formation of a loop in the needle thread as the needle rises from its lowest point. This loop is either inter-looped with the preceding loop or inter-looped with other threads or interlaced with an under thread in lockstitch.

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Vinyl Fibers

Vinyl fibers are those man-made fibers spun from polymers or copolymers of substituted vinyl monomers and include vinylon, vinyl, vinylon-vinyl matrix (Polychlal), saran, and polytetrafluoroethylene fibers.

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Miscellaneous Fibers

Fibers which do not logically “fit” under other classifications such as natural, manmade, mineral etc. such novaloid, carbon, poly-phenylene dibenzimidazole polyimide fibers etc. are categorized under miscellaneous fibers.

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Feeding Systems of Sewing Machines

Material feed is the controlled movement of the material being sewn from one stitch position to the next. Different feeding mechanisms available are for sewing fabrics. Some of them are Manual feed, Feed dog, Drop Feed, Needle Feed (Upper pivot needle Feed, Central pivot needle Feed, Parallel drive needle Feed), Wheel feed, Rotary feed, Upper Feed(Vibrating Presser Foot, Alternating Presser Foot, Top Feed, Jump Foot, Walking Foot, Spring action asking Foot, Driven walking Foot, Wheel feed.

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Elastomeric Fibers

Elastomeric fibers are those fibers that possess extremely high elongations at break and that recover fully and rapidly from high elongations up to their breaking point. The fibers are all used in specialized applications where high elasticity is necessary within the textile structure. An Elastomer is a polymer with the physical property of elasticity. The elastomer is a term derived from elastic polymer, which is often used interchangeably with the term rubber.

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Polyolefin Fibres

Polyolefin fibers are those fibers produced from polymers formed by chain-growth polymerization of olefins (alkenes) and which contain greater than 85% polymerized ethylene, propylene, or other olefin units.

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Polyamide Fibers

The polyamide fibers include the nylons and the Aramid fibers. Both fiber types are formed from polymers of long-chain polyamides.

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Yarn/Thread Count Numbering System

Threads are usually made up of several single strands twisted or plied together. The numbering system for threads has two parts: one related to the thickness of the single strand and the other to the number of strands (ply). Whereas the ply is expressed in thickness and the single strand is specified as a ?count? related to the length per unit weight. Cotton Count system, Tex system, and the Metric Ticket system are some of the commonly used thread numbering systems.

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Acrylic Fibers

Acrylic fibres are polymers formed by addition polymerization of at least 85% by weight of a chemical called acrylonitrile or vinyl chanide. To polymerise vinyl cyanide the double bond between the first two carbon atoms is broken and the molecules attach themselves to each other in a linear chain.

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