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Rajeev kt ppt Presentation Transcript

  • 1. TECHNOLOGY KNITTING Knitting Needles - An Overview •Presented By: •Rajeev Sharan •Roll No. – 23 •Apparel Production (4th- SEM) •DEPARTMENT OF FASHION TECHNOLOGY
  • 2. Types of Knitting Needles 1. Manual Knitting Needles 2. Needles of Knitting MachinesKnitting Needles- An Overview RAJEEV SHARAN 2KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 3. Knitting Needles or Knitting Pins (Manual Knitting) A tool to produce knitted fabrics. •Also been called knitting sticks, knitting pins, knitting wires, or simply wires or rods. •Length and thickness of the needles vary depending on the type of yarn used (e.g., fine or thick) and the type of fabric to be produced (e.g., firm or loose).
  • 4. Features of Knitting needles•a long shaft•tapered at their end,•not nearly as sharp assewing needles.Knitting Needles- An Overview RAJEEV SHARAN 4KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 5. Functions of features of knitting needlesLong Shaft Tapered Ends• holds the active • use to form new stitches. (unsecured) stitches of • inserting the tapered end the fabric, to prevent through an active stitch, catching them from unravelling. a loop of fresh yarn and drawing it through the stitch; this secures the initial stitch and forms a new active stitch in its place 5Knitting Needles- An Overview RAJEEV SHARANKNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 6. The needle may be passed between active stitches being held on another needle, or indeed through inactive stitches that have been knit previously.Knitting Needles- An Overview RAJEEV SHARAN 6KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 7. Features describing size of needlesDiameter of the needle Length of the needle• The size of the new stitch is • The length of a needle determined in large part by the determines how many stitches it diameter of the knitting needle can hold at once used to form it, because that • for example, very large projects affects the length of the yarn- such as a shawl with hundreds loop drawn through the previous of stitches might require a long stitch. needle• Thus, large stitches can be made with large needles, whereas fine knitting requires fine needlesKnitting Needles- An Overview RAJEEV SHARAN 7KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 8. Straight Needle •most widely recognized form of knitting needle. •probably invented in the mid 19th century. •narrowed nearly to a point at one end and capped at the other with a knob or head (like the head of a straight pin). •used almost exclusively for knitting flat two-dimensional fabrics like rectangles and squares. •The needles are popular because the knob at the end of each needle prevents the stitches from inadvertently falling off the needles.Knitting Needles- An Overview RAJEEV SHARAN 8KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 9. Different Types Of Needles Single-point Needles Double-point or Double- Pointed Needles Circular Needles Cable Stitch NeedlesKnitting Needles- An Overview RAJEEV SHARAN 9KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 10. Knitting Needles- An Overview RAJEEV SHARAN 10KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 11. Single-point Needles•the most common knitting needles.•used for making flat knit pieces in a wide variety of patterns.•consist of a long, pointed shaft, with a cap on which their sizeis usually indicated.•these knitting needles are straight and rigid.•the knitting of new stitches occurs only at the tapered ends.•Most are cylindrical, but few companies offers a “square”version, which it claims are useful for people with stiff hands.Knitting Needles- An Overview RAJEEV SHARAN 11KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 12. Single-point Needles •usually 10-16 inches long but, due to the compressibility of knitted fabrics, may be used to knit pieces significantly wider. •their diameter, which ranges from below 2 mm to 25 mm (roughly 1 inch). •The diameter affects the size of stitches, which affects the gauge of the knitting and the elasticity of the fabric. •a simple way to change gauge is to use different needles, which is the basis of uneven knitting.Knitting Needles- An Overview RAJEEV SHARAN 12KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 13. Single-point Needles •made of aluminium, steel, plastic, or various woods such as bamboo, rosewood, ebony, or birch. •Different materials have different frictions and grip the yarn differently; slick needles such as metallic needles are useful for swift knitting, whereas rougher needles such as bamboo are less prone to dropping stitches. •needles with lighted tips have been sold to allow knitters to knit in the dark.Knitting Needles- An Overview RAJEEV SHARAN 13KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 14. Knitting needles in a variety of sizes (US 2, 4, 5, 6, 7, 8, 9, 10, 11, 13 and 15 from the bottom). The US size 7 and 15 needles are bamboo and wood, respectively, whereas the others are aluminium. Having a smoother surface, metal needles tend to produce faster knitting but stitches are more likely to slide off by accidentKnitting Needles- An Overview RAJEEV SHARAN 14KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 15. Double-point or Double-Pointed Needles•tapered at both ends, which allows them to be knit fromeither end.•somewhat shorter (typically 7 inches).•used in sets of at least four to create seamless circular items,like tube socks, sleeves, or mittens.•usually one needle is active while the others hold theremaining active stitches.Knitting Needles- An Overview RAJEEV SHARAN 15KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 16. Double-point or Double-Pointed Needles•can also be used for flat items.•the number of needles required depends on the circumferenceof the item being made.•In knitting instructions, these needles are often indicated as“dp”.•Made of similar materials to single-point needles.Knitting Needles- An Overview RAJEEV SHARAN 16KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 17. Double-pointed knitting needles usually come in sets of four (US size 1, on right) or five (US size 8, on left).Knitting Needles- An Overview RAJEEV SHARAN 17KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 18. Circular Needles•long, flexible double-pointed needles.•the two tapered ends are rigid and straight.•typically 5 inches (130 mm) long tapered ends.•the two ends are connected by a flexible strand that allows thetwo ends to be brought together.•needles are typically 24-60 inches long.•usually used singly or in pairsKnitting Needles- An Overview RAJEEV SHARAN 18KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 19. Circular Needles•used for seamless circular items that are too large to workcomfortably on double-point needles.•they can also be used for very large flat items, such as afghans.•because the circumference of the piece being knit must be atleast 2 inches (5.08 cm) larger than the length of circular needles,this will determine when to choose each needle type. •the width of the knitted piece may be significantly longer than the length of the circular needle.•Made of flexible nylon “cord” with metal, plastic, or woodentipsKnitting Needles- An Overview RAJEEV SHARAN 19KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 20. Circular knitting needles in three different lengths and sizes. The tips of the outermost, longest one is US size 5 and chrome-plated for speed, whereas the innermost tips are wood and US size 15; the middle red metal tips are US size 9Knitting Needles- An Overview RAJEEV SHARAN 20KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 21. Circular Needles•Special kits are available that allow circular needles of variouslengths and diameters to be made as needed; •rigid ends of various diameters may be screwed into strands of various lengths.•The ability to work from either end of one needle is convenientin several types of knitting, such as slip-stitch versions of doubleknitting.•Some manufacturers sell the two needles and the joining lengthof nylon separatelyKnitting Needles- An Overview RAJEEV SHARAN 21KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 22. Interchangeable circular knitting needle systemKnitting Needles- An Overview RAJEEV SHARAN 22KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 23. Circular Needles•the advantages of using circular needles are •the weight of the fabric is more evenly distributed and therefore, less taxing on the arms and wrists of the knitter, •there is more manoeuvrability of the fabric and needles without fear of the stitches falling off the needles, an occasional occurrence when using double- pointed needles.•A technique that has become popular for knitting tubes is usingtwo circular needles, instead of four or five double-pointedneedles. •This technique has been evolved further, and now, many people knit two socks, sleeves, or matching items at the same time on circular needles. It is said that this technique helps alleviate difficulties when duplicating the second of a matching pair of items.Knitting Needles- An Overview RAJEEV SHARAN 23KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 24. Circular Needle- A single needle or a pair•Different authorities disagree on whether the needles should bethought of as a single needle or pair.•Mary Thomas (1938) and June Hemmons Hiatt (1988) both implythat a circular needle (note the singular) consists of a pair needles (notethe plural).•Richard Rutt (2003), however, calls a circular needle (note thesingular) a double-pointed needle (singular again), so considers it asingle needle.•In any case, the two ends are used exactly like two needles, in thesense that the knitter holds one in each hand and knits as if havingtwo.Knitting Needles- An Overview RAJEEV SHARAN 24KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 25. Cable Stitch Needles•only knitting needles with a built-in bend, specially designed tokeep the cable from slipping off.•There are two designs •One looks like a small hill in the middle of a long highway and is sometimes called a straight cable stitch needle or a cable stitch holder. •The other type looks like a double-point needle with one end curved under, and always seems to be called a cable stitch needle.•Each of these comes in a larger and smaller size, sometimesreferred to as bulky and regular.•They also often come in packs of three, with a bulky and regularneedle and one “holder.”Knitting Needles- An Overview RAJEEV SHARAN 25KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 26. Two different styles of cable needlesKnitting Needles- An Overview RAJEEV SHARAN 26KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 27. Needle materials•Modern knitting needles •aluminium, Benefits: Easily available in mainstream craft shops; inexpensive; smooth surface allows you to knit very quickly with minimum resistance. Drawbacks: They make clickety-clack sounds while you knit, making it difficult to knit unobtrusively in public; surface can scratch and develop rust over time; the metal can feel cool and unyielding, which some knitters -- especially those with arthritis or carpal-tunnel syndrome -- find unpleasant.Knitting Needles- An Overview RAJEEV SHARAN 27KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 28. Needle materials •wood, Benefits: Lightweight, quiet, feel warm in your hands; slightly rough surface adds friction when knitting so you work more slowly and precisely, which is good for beginners or advanced knitters working on complex patterns. Drawbacks: Can be harder to locate and relatively pricey, especially those made of more rare woods; may break or splinter; some people dont like the slower knitting experience.Knitting Needles- An Overview RAJEEV SHARAN 28KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 29. Needle materials •bamboo, Benefits: Similar to wood needles, these are also lightweight and quiet; they feel warm in your hands and develop a beautiful patina over time; they are easily available in most shops; surface friction also slows your knitting speed slightly. Drawbacks: Similar to wood needles, these can break or splinter at the tips, and many people dont enjoy the stronger grip these have on yarns. plastic,Knitting Needles- An Overview RAJEEV SHARAN 29KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 30. Needle materials •Casein Benefits: Ideal for knitters seeking a total organic experience, these are made of a natural, nontoxic milk protein; they are available in a full range of colors including bright pearlescent pastels and classic tortoise-shell patterns; they feel warm in your hands; their surface is smoother than wood but not quite as slippery as aluminium; they bend and flex gently and offer a quiet knitting experience. Drawbacks: Even though they are made of totally organic materials, Swallow casein needles can look plastic and artificial; because they are only manufactured by one company, availability can be limited.Knitting Needles- An Overview RAJEEV SHARAN 30KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 31. Needle materials •Bryspun Benefits: Bryspun flexible knitting needles are made of a special plastic and are very popular for knitters with arthritis; they are warm and smooth to the touch. Drawbacks: Many people find their grey color and plastic texture too bland; not every yarn shop carries them, so you may have to order online. •Pony Pearls Benefits: Made of cellulose acetate, these needles come in a wide range of bright, cheerful colours and have a moderately smooth surface for quick knitting. Drawbacks: Sizes 0-8 are reinforced with steel wire, which can jangle around inside the needle while youre using it -- I found this quite distracting; they arent as flexible as Bryspun but have more visual appeal.Knitting Needles- An Overview RAJEEV SHARAN 31KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 32. Needle materials •Nickel and nickel-plated aluminium Benefits: The nickel plating makes the surface even smoother than aluminium, which translates into speedy knitting; extremely lightweight. Drawbacks: Can be expensive; they make noise while knitting; and, as with standard aluminium, the unyielding nature of the metal can be bothersome for people with arthritis or sensitive hands. •Walnut •Ebony •Plastic •Steel and •GlassKnitting Needles- An Overview RAJEEV SHARAN 32KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 33. Needle materials•antique knitting needles •tortoiseshell, •ivory and •walrus tusks.•these materials are now banned due to their impact onendangered species,•needles made from them are virtually impossible to find.Knitting Needles- An Overview RAJEEV SHARAN 33KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 34. Needles of Knitting Machines•Heart of any knitting machine.•The main element of intermeshing of the loops.•The quality of knitted fabric largely dependent onthe effectiveness and accuracy of the loop formingelement.•Small variations in the production of needles canlead to irregular fabric.Knitting Needles- An Overview RAJEEV SHARAN 34KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 35. Knitting Needles- An Overview RAJEEV SHARAN 35KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 36. Needles of Knitting Machines•The surface of needles should be highly polishedallowing the yarn and the loop to slide freely.•The needle must have high strength andtoughnessto give durability.•A typical needle must perform several knittingactions without any fault.Knitting Needles- An Overview RAJEEV SHARAN 36KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 37. Knitting Needles- An Overview RAJEEV SHARAN 37KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 38. Bearded Needles•Simplest and cheapest.•Requires an additional elementto close the beard during knitting.•Limiting productivity •A knitting section occupies a considerable amount of space.•Individual loop formation hasto be achieved by a loop formingelement. This leads to a morecomplicatedKnitting Needles- An Overview RAJEEV SHARAN 38KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 39. Bearded Needles•Invented by Rev. William Lee in 1859.•Can be set vertically or horizontally.•Has the disadvantage of requiring apressing edge to close the bearded hook.•Presser may be in the form of a bar, blade,verge or wheel.•Finer in Cross Section, therefore, moreneedles in unit space. Hence Finer Gauge(60 needles/inch) can be achieved.Knitting Needles- An Overview RAJEEV SHARAN 39KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 40. Bearded Needles •Less expensive. •High wear and break easily. •Strain on yarn is less. •No possibility of Fluff or Lint accumulation on needle. •Used by most of warp knitting machines.Knitting Needles- An Overview RAJEEV SHARAN 40KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 41. Bearded NeedlesA bearded needle shown with the open andclosed positions of the beard.The main parts of the bearded needle.•Stem •Around which the needle loop is formed. •Used with jack sinkers to form new loops•Head •Where the stem is turned into a hook to draw the new loop through the old loop.Knitting Needles- An Overview RAJEEV SHARAN 41KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 42. Bearded Needles •Beard •The curved continuation of the hook that is used to separate the trapped new loop inside from the old loop as it slides off the needle beard. •Eye or Groove •Cut in the stem to receive the pointed tip of the beard when it is pressed, thus enclosing the new loop. •Shank •Bent for individual location in the machine or cast with other in a metal „lead‟ •Used to attach the needle to the frameKnitting Needles- An Overview RAJEEV SHARAN 42KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 43. Knitting action of Bearded NeedlesKnitting Needles- An Overview RAJEEV SHARAN 43KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 44. Knitting action of Bearded Needles •The needle requires a pressing edge to close the bearded hook and enclosing the new loop. •Presser may be in the form of a bar, blade, verge or wheel, with either the presser or the needle remaining stationary whilst the other element move towards it. •Individual loop formation has to be achieved by a loop forming element. This leads to a more complicated knitting action but also provides for a more gentle and careful loop formation.Knitting Needles- An Overview RAJEEV SHARAN 44KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 45. Latch Needles •Self-acting or loop-controlled needle. •Also termed as „automatic needle‟. •Most widely used needle in weft knitting. •Ideally suited for use with computer controlled electronic selection devices. •Longer stroke in the cycle of knitting action. •Takes a longer time to knit a loop and hence the knitting machine is generally found lower. •Expensive, because of the assembly of the needle and the latch.Knitting Needles- An Overview RAJEEV SHARAN 45KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 46. Latch Needles- Features •The hook, which draws and retains the new loop. •The slot or saw cut, which receives the latch-blade. •The cheeks or slot-walls, which are either punched or riveted to the latch bladeKnitting Needles- An Overview RAJEEV SHARAN 46KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 47. Latch Needles- Features •The rivet, which may be plain or threaded. This has been dispensed with on most plate metal needles, by pinching in the slot walls to retain the latch blade. •The latch blade, which locates the latch in the needle.Knitting Needles- An Overview RAJEEV SHARAN 47KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 48. Latch Needles- Features •The latch spoon, an extension of the blade. •Bridges the gap between the hook and the stem covering the hook when closed.Knitting Needles- An Overview RAJEEV SHARAN 48KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 49. Latch Needles- Features •The stem, which carries the loop in the clearing or rest position. •The tail, which is an extension below the butt, giving additional support to the needle and keeping the needle in its trick. •The butt, which enables the needle to be reciprocated when contacted by cam profiles on either side of it, forming a track.Knitting Needles- An Overview RAJEEV SHARAN 49KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 50. Latch Needles- Knitting actionKnitting Needles- An Overview RAJEEV SHARAN 50KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 51. Latch Needles- Knitting action Knocking Yarn over & The rest Latch Clearing feeding & loop position opening height latch length closing formationKnitting Needles- An Overview RAJEEV SHARAN 51KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 52. Latch Needles- Knitting action •The rest position: •The head of needle hook is level with the top of the verge of the trick. •The loop formed at the previous feeder is in the closed hook. •It is prevented from rising as the needle rises, by holding-down sinkers or web holders that move forward between the needles to hold down the sinker loops. •Latch opening •As the needle butt passes up the incline of the clearing cams,the old loop, which is held down by the sinker, slides inside the hook and contacts the latch, turning and opening it.Knitting Needles- An Overview RAJEEV SHARAN 52KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 53. Latch Needles- Knitting action•Clearing height •When the needle reaches the top of the cam, the old loop, the loop is cleared from the hook and latch spoon on to the stem the feeder guide, at this point as a guard to prevent the latch from closing the empty hook.•Yarn feeding & latch closing •The needle starts to descend the stitch cam so that its latch is below the verge, with the old loop moving under it. •At this point the new yarn is fed through a hole in the feeder guide to descending the needle hook, as there is no danger of the yarn being fed below the latch. •The old loop contacts the underside of the latch, causing it to close on the hook.Knitting Needles- An Overview RAJEEV SHARAN 53KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 54. Latch Needles- Knitting action •Knocking-over & loop length formation. •As the head of the needle descends below the loop of the trick, the old loop slides off the needle and the new loop is drawn through it. •The continued descent of the needle draws the loop length, which is approximately twice the distance the head of the needle descends, below the surface of the sinker or trick-plate supporting the sinker loop. •The distance is determined by the depth setting of the stitch cam, which can be adjusted.Knitting Needles- An Overview RAJEEV SHARAN 54KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 55. Latch Needles- Advantages•Major advantage of being self-acting or loop-controlled, so that individual movement andcontrol of the needle enables stitch selection to beachieved.•Ideally suited foe use with computer-controlledelectronic selection devices.•Latch needles can operate at any angle butoften require a latch-guard or latch-openingfacilities.•Variation of the height of the verticalreciprocation of a latch needle at a feeder canproduce either missing, tucking or knitting anddepth of descent normally determines loop-length.Knitting Needles- An Overview RAJEEV SHARAN 55KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 56. Latch Needles- Disadvantages •Latch needles are thick and rigid. •Needle deflection is difficult. •It imposes a certain strain on yarn. •There is also a possibility of fluff or lint accumulation on the latch due to rubbing action of the yarn on the needle.Knitting Needles- An Overview RAJEEV SHARAN 56KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 57. comparison•Require another element to close •Self actingthe hook.•Thin & flexible. •Thick & rigid•Usually mounted on finer gauge. •Usually mounted on the coarser gauge .•It wears &breaks easily. •Strong in nature.•No strain on the yarn. •Impose certain strain on yarn.•It makes a shorter stroke in the •It makes a longer stroke in theknitting cycle. knitting cycle. Knitting Needles- An Overview RAJEEV SHARAN 57 KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 58. comparison•Stitches are tight and minimum •Stitches are loose.loop robbing.•No fly and fluff generation. •Due to rubbing, fly and fluff generation is high.•Time required to knit the loop is •Takes longer time to knit theless. loop.•The speed of the machine is high. •The speed of the machine is less. Knitting Needles- An Overview RAJEEV SHARAN 58 KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 59. Compound Needles•Compound needles consist of twoseparately-controlled parts- the open hookand the sliding closing element (tongue,latch, piston, plunger).•It is most popular in warp knittingmachines.•Strain is not put on the yarn.•Both members of compound needle have astraight, thus knitting speed can beincreased.•These are very expensive to manufactureKnitting Needles- An Overview RAJEEV SHARAN 59KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 60. Compound Needles•Compound needles are also consist of hallowsteel tube of finer gauge in a which a hookclosing element, which is also a steel tube offine gauge, is inserted.Knitting Needles- An Overview RAJEEV SHARAN 60KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 61. comparison•Self acting needles. •Consist of two separately- controlled parts.•Less expensive. •Very expensive.•Preferred for weft knitting. •Preferred for warp knitting.•Vibration is more. •Short, smooth simple harmonic movement, so there is less vibration.•Yarns are under stress. •No stress on yarns. Knitting Needles- An Overview RAJEEV SHARAN 61 KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 62. comparison•The vertical clearing height is •The vertical clearing height isvery good. not so good.•Latch needle produces the long •The needle can knit tight,and narrow loops. uniform stitches that tend to be rounder.•Latch needles are relatively •Because of its slim constructionthick. and short hook fine warp knitted are possible.•Speed is relatively less. •Can work at high speeds. Knitting Needles- An Overview RAJEEV SHARAN 62 KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY
  • 63. Common points•The three needles considered above, while differing in design ,have the following common points: •Hook- to take & hold newly fed yarn. •Closing mechanism- to allow the held loop to leave the needle. •Stem •Control butt- for individual or collective movement.Knitting Needles- An Overview RAJEEV SHARAN 63KNITTING TECHNOLOGY DEPARTMENT OF FASHION TECHNOLOGY