Preparation method of variable-thickness layer-to-layer connection structure fabric

A layered structure and variable thickness technology, applied in the direction of fabrics, braids, textiles, etc., can solve the problems that cannot be carried out internally, and the fabric's anti-delamination effect is poor, so as to achieve the increase of inter-layer connection depth and strength, and anti-delamination Strong ability and good anti-delamination performance

Active Publication Date: 2015-07-22
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the prior art that the variable thickness can only be carried out on the surface layer and cannot be carried out inside, and the resulting fabric has poor anti-delamination effect, the present invention provides a method for preparing a variable-thickness layered fabric

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of variable-thickness layer-to-layer connection structure fabric
  • Preparation method of variable-thickness layer-to-layer connection structure fabric
  • Preparation method of variable-thickness layer-to-layer connection structure fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation of the new structural layered fabric formed by the mutual transfer of the inner and outer yarn bundles, and the design of the fabric process parameters are shown in Table 1.

[0046] Table 1 Process parameters of layered fabric

[0047]

[0048]The specific operation method is as follows:

[0049] (1) Layered fabrics are interwoven by warp and weft direction yarn bundles through the relative displacement and weft threading of two adjacent rows of warp yarns, see Figure 4 . Set two adjacent columns of warp yarns as a pair, and define the column where the warp yarns can be seen on the outer surface of the fabric as the high column. Figure 4 The column ① in the column, the other column that is paired with it is the lower column, that is Figure 4 ② in the column, and the distance between the high and low columns is 2 spindles.

[0050] (2) The first layer is opened, and the weft yarn is introduced, and then the second layer is opened, and the weft ...

Embodiment 2

[0057] developed as figure 2 For the plate-shaped variable-thickness fabric shown, the thickness of the plate gradually changes from 8mm to 5mm, and the process parameters of the plate-shaped variable-thickness layered fabric are designed as shown in Table 2.

[0058] Table 2 Process parameters of panel fabric with variable thickness layered structure

[0059]

[0060]

[0061] The specific operation method is as follows:

[0062] (1) Set two adjacent rows of warp yarns as a pair, and define the row where the warp yarns can be seen on the outer surface of the fabric as the high row, that is, Figure 4 The column ① in the column, the other column that is paired with it is the lower column, that is Figure 4 ② in the column, and the distance between the high and low columns is 2 spindles.

[0063] (2) The first layer is opened, and the weft yarn is introduced, and then the second layer is opened, and the weft yarn is introduced, and so on, and the weft yarn is inserted...

Embodiment 3

[0070] developed as image 3 The tapered tubular variable thickness fabric shown in Table 3 shows its technological parameter design.

[0071] Table 3 Process parameters of tapered tubular fabric with variable thickness

[0072]

[0073] The tapered tubular variable-thickness fabric has a total of 120 wefts, and two rows of warp yarns total 30. It needs to be reduced 60 times from 3 strands to 1 strand. Therefore, one warp yarn is subtracted for every two wefts.

[0074] Its specific operation is as follows:

[0075] (1) Set two adjacent rows of warp yarns as a pair, and define the row where the warp yarns can be seen on the outer surface of the fabric as the high row. Figure 10 The column ① in the column, the other column that is paired with it is the lower column, that is Figure 10 ② in the column, and the distance between the high and low columns is 2 spindles.

[0076] (2) The first layer is opened, and the weft yarn is introduced, and then the second layer is ope...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a preparation method of a variable-thickness layer-to-layer connection structure fabric. The method includes the following steps: yarns at an inner layer and at an outer layer are alternated firstly through the relative movement and the mutual movement of two adjacent columns of yarns, and then the yarns moved to the surface are thinned or thickened. According to the preparation method of the variable-thickness layer-to-layer connection structure fabric, a novel layer-to-layer connection structure is achieved through the movement of the yarns on the basis of layer-to-layer connection structure braiding equipment, the connection depth of layers of the novel layer-to-layer connection structure fabric is larger, the delamination capability is stronger, meanwhile, the alternated movement of the yarns facilitates the operation of thinning the yarns on the surface of the fabric, the size of a unit cell is changed by not changing the number of unit cells in the fabric so as to change the thickness of the fabric and prepare a cone-shaped fabric, a plate-like variable-thickness composite preform is prepared by thinning the yarns from the two sides, and a cone is prepared by thinning the yarns from one side.

Description

technical field [0001] The invention relates to a preparation method of a layered fabric with variable thickness, belonging to the field of three-dimensional fabric weaving. Background technique [0002] Layered structure fabrics have many advantages such as tight interweaving structure, good integrity, and excellent mechanical properties. In recent years, with the continuous increase of laminated fabric composite products, its application fields have continued to expand, and it has played an increasingly important role in aerospace, construction, fishery, sports, military and other fields. The majority of researchers have done more and more research on the structure, weaving method, and material properties of layered fabrics, but the research on variable thickness layered fabrics and the profiling of layered fabrics is relatively lacking. Although the patent application CN 201110278215.6 discloses the use of warp inlay, weft inlay and changing the weft yarn specification t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04C1/06
CPCD03D25/005D04C1/06
Inventor 朱建勋赵敬张立泉郭洪伟汤丹芬
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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