Classifications

• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
  • D03D49/04—Control of the tension in warp or cloth
  • D03D49/06—Warp let-off mechanisms

Definitions

• the conventional methods are also to be criticized for other reasons.
• the combination of the warp thread group on the warp beam results in disadvantages in warp production, since in the sizing process the complete thread covering of each thread with sizing cannot be guaranteed due to the high thread occupancy on the warp beam.
• the size is applied to the warp thread around the To make warp threads in the sizing process more resistant for the weaving process.
• the thread is not completely coated with size, there are enormous losses in quality due to errors caused thereby, such as capillary breaks, deferred lint nests, thread breaks. These errors could be avoided with sufficient and evenly applied sizing. It can also happen in the sizing process that, due to the high thread occupancy per warp beam, several threads stick together over a larger warp distance. These bonds also lead to the quality losses mentioned in the later weaving mill.
• the thread density is very high, particularly when producing two- or multi-layer fabrics from only one warp beam. Even under the condition of a theoretically optimal arbitration, the tightness in the back compartment can lead to the mentioned weaving and quality losses.
• the invention is based on the object of proposing a method for weaving fabrics, in particular airbag fabrics, in which the disadvantages known from the prior art are avoided or at least greatly reduced.
• the object is achieved with a method according to claim 1. If the total warp thread set required for a fabric is distributed over at least two warp beams, it is much better to use sized warp thread material than with conventional methods. In the warp production to be carried out before the process according to the invention, a complete sheathing of the individual threads during sizing can then take place with a double warp spacing, as it were, due to the reduced total number of warp threads per warp beam. Due to the reduced thread occupancy per warp beam possible by the method according to the invention, the risk of individual warp threads sticking together is also reduced to a minimum, whereby both glued warp threads and fluffy warp threads (broken capillaries due to inadequate size coating) are almost avoided. The error rate in weaving can be drastically reduced.
• the method according to the invention also has further advantages, in particular if, in multilayer fabrics, for example two-layer fabrics, each fabric layer can be produced separately with a warp thread array of its own warp beam. This achieves a tension equalization across the fabric width, which is comparable to the production of standard single-layer flat fabrics.
• the process according to the invention can therefore achieve the required, very high tissue quality and in the individual Fabric layers achieve almost identical technical values.
• the described procedure minimizes tension differences during the transition from a single-layer P3 / 3 area to a two-layer weave.
• the warp beams are controlled independently of one another on the voltage side. In the case of two-layer fabrics in particular, this leads to a further increase in the uniformity of the fabrics.
• the warp beams are equipped with different warp thread materials. If such a fabric is to be used, for example, for a side airbag in a car, then a warp thread material can be selected for the position of the fabric (in the installed state in the car) facing the passenger, which results in an airbag surface that is gentle on the head of the passenger.
• the other layer of the fabric facing the window can contain a warp thread material that is particularly resistant to broken glass or the like.
• the figure shows a very schematic representation of an arrangement of a weaving machine from the side.
• Warp thread assemblies 9 are delivered to the weaving point from warp beams 8 and 10, the rear shed 6 and the shed 3 being formed in the area of a harness package 5 of a (stylized) jacquard machine 7 due to the up and down movements of the individual warp threads.
• the reed 4 can be seen in the area of the left end of the shed 3.
• a and / or multilayer fabric 2 is wound up by a goods take-off roller 1.
• the use of two or more warp beams according to the invention when weaving single and / or multi-layer fabrics also brings a considerable cost advantage.
• the use of melter warp beams reduces the frequency of warp changes and the set-up times.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Woven Fabrics (AREA)
• Treatment Of Fiber Materials (AREA)
• Air Bags (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Looms (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (2)

Family

ID=7679755

Family Applications (1)

Country Status (12)

Cited By (3)

Families Citing this family (5)

Citations (6)

Family Cites Families (3)

• 2001
  • 2001-03-30 DE DE2001115891 patent/DE10115891A1/de not_active Withdrawn
• 2002
  • 2002-04-02 ES ES02724267T patent/ES2302804T3/es not_active Expired - Lifetime
  • 2002-04-02 AT AT02724267T patent/ATE387524T1/de not_active IP Right Cessation
  • 2002-04-02 AU AU2002254970A patent/AU2002254970A1/en not_active Abandoned
  • 2002-04-02 PL PL02367699A patent/PL367699A1/xx not_active Application Discontinuation
  • 2002-04-02 WO PCT/EP2002/003630 patent/WO2002079554A2/de active IP Right Grant
  • 2002-04-02 CA CA 2442653 patent/CA2442653C/en not_active Expired - Fee Related
  • 2002-04-02 CZ CZ20032628A patent/CZ302560B6/cs not_active IP Right Cessation
  • 2002-04-02 EP EP02724267A patent/EP1415028B1/de not_active Expired - Lifetime
  • 2002-04-02 PT PT02724267T patent/PT1415028E/pt unknown
  • 2002-04-02 DE DE50211790T patent/DE50211790D1/de not_active Expired - Lifetime
  • 2002-04-02 CN CNA028075803A patent/CN1520476A/zh active Pending
  • 2002-04-02 JP JP2002577953A patent/JP4439182B2/ja not_active Expired - Fee Related

Patent Citations (6)

Also Published As

Similar Documents

Legal Events