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Carbon fiber package and carbon fiber package body

A packaging and carbon fiber technology, which is applied in the directions of transportation and packaging, transportation of filamentous materials, and thin material processing, and can solve the problems of soft packaging, protruding end faces, and damaged tows.

Inactive Publication Date: 2003-07-30
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the size of the bobbin is fixed, the number of tows to be coiled is large, and the thickness of the tows is large, if the open coiling is used, a large space will be formed due to the overlapping parts of the tows. , and there are large unevenness on the winding surface, which reduces the package density and the package becomes soft. Under the winding tension and the pressure (surface pressure) acting on the winding surface, it is easy for the tow to extrude to both ends , causing the end face to protrude
Package collapse occurs when such packages are transported, and since the end of the package protrudes beyond the length of the bobbin, damage to the tow can occur during further machining operations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Carbon fibers with 50,000 single fibers (single filament: 0.63 denier) and an area weight (unit weight) of 3.5 g / m were wound on a bobbin with a diameter of 80 mm by a winding machine, and the winding width was 250 mm. At this time, the package diameter D is 400mm, (D-d) / 2 is 160, and (D-d) / 2L is 0.64. There are no problems such as fiber shedding at the end of the package, and it can be made into a 30kg package. When the carbon fiber package is placed on the stacker of the tow winding machine and unwound under a tension of 4kg, it can be unwound smoothly without intertwining. Comparative example 1

Embodiment 2

[0061] Drop the carbon fiber with 50,000 single fibers (monofilament: 0.63 denier) and 3.5g / m area weight (head weight) into a cardboard box of 400mm×400mm×400mm from a height of 3m, and take the center of the carton as the opposite At the intersection of the corner lines, the fibers move back and forth along a square track with a side length of 250mm in the horizontal direction to form a 20kg packaged object. Falling fibers can be loaded into the box without tilting. The filling height of carbon fiber in this package is 160mm, and the bulk density is 0.78g / cm 3 . The carbon fiber was pulled out from the cardboard box and pultruded by a pultrusion machine, and no failure occurred during unwinding. Comparative example 2

Embodiment 3

[0064] A carbon fiber with a single fiber number of 50,000 (single filament: 0.63 denier) and an area weight of 3.5 g / m is wound on a detachable bobbin with a diameter of 80 mm and a winding width of 250 mm by a winding machine, and then the bobbin is The tube is pulled out, thereby making a hollow package. It can be made into a 30kg packaged product without problems such as fiber shedding at the end of the package. In this case the diameter D of the package is 400 mm, di is 80 mm, (D / di) / 2 is 160, (D-di) / 2L is 0.64. When the carbon fiber package is placed on the cluster rack of the pultrusion machine and unwinds from the innermost layer of the package, it can be unwound smoothly without intertwining. Comparative example 3

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Abstract

A carbon fiber package in the form of cheese winding or inside-pull package is made of carbon fibers having a fineness of at least 25,000 deniers. The outer diameter, the bobbin diameter or inner diameter of the package, and the winding width are in specific ranges. A square end type package has a yarn width per fineness, an angle of wind at the start and end of winding, and a winding irregularity in specific ranges. A carbon fiber package body has a mean bulk density in a specific range. Troubles and disadvantages during use are eliminated, a high winding density is achieved, and winding collapse hardly occurs.

Description

technical field [0001] The invention relates to a large package and a packaged object of high denier carbon fiber. Further, the present invention relates to a carbon fiber package whose shape is obtained by high-precision molding, which has a high winding density and is not easily collapsed, and a method for manufacturing the package. Background technique [0002] The demand for carbon fiber is increasing year by year, and it is shifting from high-end applications such as aircraft and sporting goods to general industrial applications related to construction, civil engineering, and energy. [0003] In general industrial applications, especially in the forming methods of large structural materials, such as weaving, tow winding, pultrusion and other methods, the required denier is as high as 100,000 denier. The current situation is that in order to meet the above requirements, tows of about 7,000 to 20,000 deniers are used for plying and molding. [0004] In view of this situ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H54/00B65H54/04B65H55/04
CPCB65H55/04B65H2701/31B65H55/043B65H2515/12
Inventor 远藤真森川春树山本荣一水上诚二
Owner TORAY IND INC
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