Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method

A technology of fiber tow and melt impregnation, which is applied in the field of polymer material forming and processing, can solve the problems of unstable impregnation operation and high probability of fiber friction and breakage, so as to improve the impregnation effect, increase the contact surface, and reduce friction and breakage. Effect

Active Publication Date: 2010-04-21
GUANGZHOU KEYUAN INNOVATIVE MATERIALS
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Problems solved by technology

However, when running at high speed, the probability of friction and bre

Method used

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  • Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method
  • Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method
  • Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method

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Example Embodiment

[0026] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0027] like figure 1 , a fiber tow melt-dipping die for producing long-fiber reinforced thermoplastics, the dipping die includes a die housing 2 , a contact godet roll group 5 and a non-contact godet roll pair set 6 . The die housing 2 is a box enclosed by a bottom plate, a side plate, an end plate and a cover plate. The inner space enclosed by the box body is a dipping pool, and the two shaft ends of the contact godet roller group 5 and the non-contact godet roller pair group 6 are embedded in the two side plates of the box body. One end plate of the die housing 2 is provided with a fiber tow introduction channel 3 and a thermoplastic resin melt introduction channel 4 , and the opposite end plate is provided with an impregnated fiber tow lead-out channel 7 . The fiber tow introduction channel 3 can also be opened at one end of the cover ...

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Abstract

The invention discloses a fiber bundle fuse dipping die head for producing long fiber reinforced plastic and a dipping method. The fiber bundle fuse dipping die head comprises a die head shell, a contact fiber guiding roll and a non-contact fiber guiding roll pair which are arranged in the die head shell. The contact fiber guiding roll includes a coaxial drum body; the non-contact fiber guiding roll pair is a fixing roll or an automatic driving roll and has a round, polygon or multi-edge transverses section surface. The dipping method comprises the following steps: in a die cavity full of fusant, a fiber bundle alternately winds the drum body of the contact fiber guiding roll under the tension traction and penetrates through a gap between the non-contact fiber guiding roll pair, and the dipped fiber bundle is exported from a derivative channel. The invention can reduce the friction consumption of the single fiber, ensure that the fuse and the dipping of the continuous fiber bundle operate stably at high dipping line speed, improve the dipping efficiency and reduce the production cost of long fiber reinforced thermoplastic plastics.

Description

technical field [0001] The invention belongs to the technical field of polymer material molding and processing, and in particular relates to a fiber tow melt-impregnation die head and an impregnation method, which are used for the production of long-fiber-reinforced thermoplastics. Background technique [0002] Affected by plasticizing processing, the fiber length of traditional fiber-reinforced thermoplastics is generally less than 0.5 mm, and the mechanical damage of its products is mainly caused by the fibers being pulled out from the matrix, and the fiber strength is basically not utilized. At the end of the last century, long fiber reinforced thermoplastics (LFRT) emerged in the international composite material market. Compared with traditional fiber-reinforced plastics, the fiber length of LFRT is greater than the critical length of the fiber drawn from the plastic matrix, which better exerts the reinforcing ability of the fiber, thus endowing the product with higher s...

Claims

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Application Information

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IPC IPC(8): B29C70/50B29C70/54
Inventor 徐迎宾李建雄陈可娟任东方刘安华
Owner GUANGZHOU KEYUAN INNOVATIVE MATERIALS
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