Weathering, artificial, test

Exposure to cyclic laboratory conditions involving changes in temperature, relative humidity andradiant energy, with or without direct water spray, in an attempt to produce changes in the material similar to those observed after long-term, continuous, outdoor exposure.
note: The laboratory exposure conditions are usually intensified beyond those encountered in actual outdoor exposure in an attempt to achieve an accelerated effect. This term does not cover exposure to special conditions such as ozone, salt spray, industrial gases, etc.

Weave

The pattern of interlacing of warp and weft in a woven fabric.

Weave effect

The distinctive effect (e.g., twill or honeycomb) developed in a fabric by the weave.

Weave number

The smallest number of ends and picks 011 which a weave interlacing pattern can be represented.

Weave repeat

The smallest number of ends and picks 011 which a weave interlacing pattern can be represented.

Weave, plain

The simplest of all weave interfacings in which the odd warp threads operate over one and under one weft thread throughout the fabric with the even warp threads reversing this order to under one, over one, throughout.
note 1.. A plain weave does not necessarily result in a plain surface effect or design in the fabric, e.g., variation of the yarn linear densities warp to weft or throughout the warp and/or weft and variation of the thread spacing warp to weft can produce rib effects (see taffeta, poult, faille and grosgrain), while colour patterning of the warp and/or weft results in colour-and-weave effects.
note 2: The area containing the two solidly filled squares in the square paper design indicates one weave repeat, i.e., 2 ends x 2 picks.

Weaver's beam

A roller on which large flanges are usually fixed so that a warp may be wound on it in readiness for weaving.

Weaving

The action of producing fabric by the interlacing of warp and weft threads.

Weaving bar

A bar that is solid in appearance, is clearly defined, runs parallel with the picks, and contains weft that is different in material, linear density, fibre, twist, lustre, colour, or shade from the adjacent normal weft.

Weaving lease

A weaving lease formed in a loom after entering the warp ends by raising and lowering heald shafts to form two sheets of ends and inserting the transverse lease rods. In particular, the term applies when the sheets of ends formed are dissii-nilar, e.g., in a loom for weaving a five-end (five-shaft) warp satin

Weaving machine

A machine used for producing fabric by weaving.single phase weaving machineA weaving machine in which the weft is laid across the full width of the warp sheet in a single phase of the working cycle. The main types of single phase weaving machines are:1. Machines with shuttles:
(i) handlooms.
(ii) non-automatic weaving machines: power-operated machines on which the weft supply in the shuttle is changed by hand.
(iii) automatic weaving machines; automatic looms: power-operated machines on which the shuttles or pirns are changed automatically.
2. Machines (power-operated) without shuttles; shuttleless weaving machines:
(i) weaving machines with projectiles: machines in which the weft thread is gripped by jaws, fitted in a projectile, which is then propelled through the shed.
(ii) weaving machines with rapier(s); rapier looms: machines in which the means of carrying the weft through the shed is fixed in the end of a rigid rod or in telescopic rods or in a flexible ribbon, this being positively driven. A rapier machine may have a single rapier to carry the weft across the full width or a single rapier operating bilaterally with a centrally located bilateral weft supply, or two rapiers operating from opposites sides of the machine.
(iii) jet weaving machines; jet looms: machines in which the weft thread is taken through the shed by a jet of air or liquid.muitiphase weaving machineA machine in which several phases of the working cycle take place at any instant so that several picks are being inserted simultaneously. The main types of multiphase weaving machines are:1. wave shed machines: weaving machines having different parts of the warp sheet in different phases of the weaving cycle at any instant. This type of shed makes it possible for a series of weft carriers or shuttles to move along in successive sheds in the same plane. When the weft carriers or shuttle carriers or shuttles travel a circular path through the wave shed, the machines are generally referred to as 'circular weaving machines' or ,circular looms'.
2. parallel shed machines: weaving machines having several sheds are formed simultaneously with each extending across the full width of the warp and with the shed moving in the warp direction.

Weaving machine with projectiles

A machine used for producing fabric by weaving.single phase weaving machineA weaving machine in which the weft is laid across the full width of the warp sheet in a single phase of the working cycle. The main types of single phase weaving machines are:1. Machines with shuttles:
(i) handlooms.
(ii) non-automatic weaving machines: power-operated machines on which the weft supply in the shuttle is changed by hand.
(iii) automatic weaving machines; automatic looms: power-operated machines on which the shuttles or pirns are changed automatically.
2. Machines (power-operated) without shuttles; shuttleless weaving machines:
(i) weaving machines with projectiles: machines in which the weft thread is gripped by jaws, fitted in a projectile, which is then propelled through the shed.
(ii) weaving machines with rapier(s); rapier looms: machines in which the means of carrying the weft through the shed is fixed in the end of a rigid rod or in telescopic rods or in a flexible ribbon, this being positively driven. A rapier machine may have a single rapier to carry the weft across the full width or a single rapier operating bilaterally with a centrally located bilateral weft supply, or two rapiers operating from opposites sides of the machine.
(iii) jet weaving machines; jet looms: machines in which the weft thread is taken through the shed by a jet of air or liquid.muitiphase weaving machineA machine in which several phases of the working cycle take place at any instant so that several picks are being inserted simultaneously. The main types of multiphase weaving machines are:1. wave shed machines: weaving machines having different parts of the warp sheet in different phases of the weaving cycle at any instant. This type of shed makes it possible for a series of weft carriers or shuttles to move along in successive sheds in the same plane. When the weft carriers or shuttle carriers or shuttles travel a circular path through the wave shed, the machines are generally referred to as 'circular weaving machines' or ,circular looms'.
2. parallel shed machines: weaving machines having several sheds are formed simultaneously with each extending across the full width of the warp and with the shed moving in the warp direction.

Weaving machine with rapier(s)

A machine used for producing fabric by weaving.single phase weaving machineA weaving machine in which the weft is laid across the full width of the warp sheet in a single phase of the working cycle. The main types of single phase weaving machines are:1. Machines with shuttles:
(i) handlooms.
(ii) non-automatic weaving machines: power-operated machines on which the weft supply in the shuttle is changed by hand.
(iii) automatic weaving machines; automatic looms: power-operated machines on which the shuttles or pirns are changed automatically.
2. Machines (power-operated) without shuttles; shuttleless weaving machines:
(i) weaving machines with projectiles: machines in which the weft thread is gripped by jaws, fitted in a projectile, which is then propelled through the shed.
(ii) weaving machines with rapier(s); rapier looms: machines in which the means of carrying the weft through the shed is fixed in the end of a rigid rod or in telescopic rods or in a flexible ribbon, this being positively driven. A rapier machine may have a single rapier to carry the weft across the full width or a single rapier operating bilaterally with a centrally located bilateral weft supply, or two rapiers operating from opposites sides of the machine.
(iii) jet weaving machines; jet looms: machines in which the weft thread is taken through the shed by a jet of air or liquid.muitiphase weaving machineA machine in which several phases of the working cycle take place at any instant so that several picks are being inserted simultaneously. The main types of multiphase weaving machines are:1. wave shed machines: weaving machines having different parts of the warp sheet in different phases of the weaving cycle at any instant. This type of shed makes it possible for a series of weft carriers or shuttles to move along in successive sheds in the same plane. When the weft carriers or shuttle carriers or shuttles travel a circular path through the wave shed, the machines are generally referred to as 'circular weaving machines' or ,circular looms'.
2. parallel shed machines: weaving machines having several sheds are formed simultaneously with each extending across the full width of the warp and with the shed moving in the warp direction.

Web

1. The sheet of fibres delivered by a card (card web) or comber (comber web).
note. (Nonwoven) See batt.
2. A plain circularknitted fabric.
4. A terin applied to narrow woven fabrics, especially woven elastic.
5. A rarely used synonym for warp and for fabric.
6. A length of lace of full machine width in the grey state.

Web

Single or multiple sheets of fibre used in the production of nonwoven fabric.