Resin flow guide tape for vacuum infusion

Abstract

This utility model provides a resin guide belt for vacuum infusion. The resin guide belt for vacuum infusion includes a corrugated drainage pad and a polyester surface felt sleeve wrapped around the surface of the corrugated drainage pad. Through the above structural design, the resulting guide belt not only has the characteristics of high flow efficiency, strong pressure resistance, strong resistance to various chemical substances, and suitability for high temperature environments, but also is very flexible in operation, easy to cut into various sizes, and can effectively prevent the vacuum bag film, another infusion process material used in vacuum infusion, from being punctured, thereby effectively avoiding the problem of leaving marks on the vacuum-infused parts. In addition, it also has the characteristics of easy removal after vacuum infusion curing and convenient use.

Description

Technical Field

[0001] This utility model belongs to the field of composite material molding technology, specifically relating to a resin guide belt for vacuum infusion. Background Technology

[0002] Vacuum infusion is an advanced technology for manufacturing composite materials, which requires injecting resin into pre-placed fiber-reinforced materials through a vacuum. The resin guide belt plays a key role in the above process, which can ensure that the resin is evenly distributed and quickly impregnates the fibers.

[0003] However, the existing guide tubes provided by the existing technology are difficult to cut due to their hard material, have poor flexibility, and are prone to puncturing the vacuum bag film during use, thus leaving marks on the parts manufactured by vacuum infusion and affecting the appearance of the parts.

[0004] Therefore, it is of great significance to develop a resin guide belt for vacuum filling that has good flow guiding effect, is easy to cut, and is not easy to puncture the vacuum bag film, in order to address the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a resin guide belt for vacuum infusion. By setting a corrugated drainage pad and wrapping the outer surface of the corrugated drainage pad with a polyester surface felt sleeve, the resulting resin guide belt for vacuum infusion can have a good resin guiding effect during vacuum infusion, high efficiency, and is very flexible and easy to cut into various sizes. At the same time, it can effectively prevent the vacuum bag film from being punctured, effectively avoiding the problem of leaving marks on the vacuum-infused parts. In addition, it is easy to remove after the infusion curing is completed.

[0006] To achieve the objective of this utility model, the following technical solution is adopted: In a first aspect, this utility model provides a resin guide belt for vacuum injection, the resin guide belt for vacuum injection comprising a corrugated drainage pad and a polyester surface felt sleeve; The polyester surface felt sleeve is wrapped around the outer surface of the corrugated drainage pad, with openings at both ends for resin to flow through.

[0007] Preferably, the corrugated drainage pad is composed of multiple interwoven plastic filaments.

[0008] Preferably, the distance between two adjacent wave crests in the corrugated drainage pad is 4 to 6 mm, for example 4 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm, 5 mm, 5.2 mm, 5.4 mm, 5.6 mm, 5.8 mm or 6 mm, and specific values ​​between the above values. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range.

[0009] Preferably, the height between two adjacent crests and troughs in the corrugated drainage pad is 2.5 to 3.5 mm, for example, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm or 3.5 mm, as well as specific values ​​between the above values. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range.

[0010] Preferably, the diameter of the corrugated plastic filament is 0.5~1.0 mm, such as 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm or 0.95 mm.

[0011] Preferably, the corrugated plastic filament is made of polypropylene (PP) or high-density polyethylene (HDPE).

[0012] Preferably, the thickness of the polyester surface felt sleeve is 0.45~0.55 mm, for example 0.45 mm, 0.46 mm, 0.47 mm, 0.48 mm, 0.49 mm, 0.5 mm, 0.51 mm, 0.52 mm, 0.53 mm, 0.54 mm or 0.55 mm, and specific values ​​between the above values. Due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific values ​​included in the range.

[0013] Preferably, the polyester surface felt sleeve is made of polyester fiber felt, and the basis weight of the polyester fiber felt is 100~120 g / m². 2 For example, 100 g / m 2 102 g / m 2 104 g / m 2 106 g / m 2 108 g / m 2 110 g / m 2 112 g / m 2 114g / m 2 116 g / m 2 118 g / m 2 Or 120 g / m 2 As for the specific point values ​​between the above point values, due to space limitations and for the sake of brevity, this utility model will not exhaustively list the specific point values ​​included in the range.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The resin guide belt for vacuum infusion provided by this utility model includes a corrugated drainage pad and a polyester surface felt sleeve wrapped around the surface of the corrugated drainage pad. Through the above structural design, the resulting guide belt not only has the characteristics of high flow efficiency, strong pressure resistance, strong resistance to various chemical substances, and suitability for high temperature environments, but also is very flexible in operation, easy to cut into various sizes, and can effectively prevent the vacuum bag film, another infusion process material used in vacuum infusion, from being punctured, thereby effectively avoiding the problem of leaving marks on the vacuum-infused parts. In addition, it also has the characteristics of easy removal after vacuum infusion curing and convenient use. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the resin guide belt for vacuum infusion provided by this utility model; Figure 2 A cross-sectional structural schematic diagram of the resin guide strip for vacuum infusion provided by this utility model; Among them, 1-corrugated drainage pad, 2-polyester surface felt sleeve; Figure 3 , Figure 4 A physical image of the corrugated drainage pad provided by this utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of this utility model and should not be considered as specific limitations thereof.

[0017] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion.

[0019] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0022] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0023] One specific embodiment of this utility model provides a resin guide strip for vacuum infusion, such as... Figure 1 and Figure 2 As shown, the resin guide belt for vacuum infusion includes a corrugated drainage pad 1 and a polyester surface felt sleeve 2. The polyester surface felt sleeve 2 is wrapped around the outer surface of the corrugated drainage pad 1, and has openings at both ends for resin to flow through.

[0024] The resin guide belt for vacuum infusion provided by this utility model has several advantages. First, by setting a corrugated drainage pad 1 with corrugated channels, the cross-sectional area of ​​the resin is increased, improving the flow efficiency of the resin guide belt. Simultaneously, the corrugated structure of the drainage pad 1 disperses stress, enhancing the compressive strength of the resin guide belt. Second, by wrapping the outer surface of the corrugated drainage pad 1 with a polyester surface felt sleeve 2, the polyester surface felt sleeve 2 effectively protects the corrugated drainage pad 1. This not only imparts good mechanical properties to the resin guide belt, making it highly resistant to various chemicals and suitable for high-temperature environments, but also prevents the corrugated drainage pad 1 from puncturing the vacuum bag film of another infusion process material during vacuum infusion, effectively avoiding leaving marks on the vacuum-infused parts. Furthermore, the resin guide belt for vacuum infusion provided by this utility model is flexible, easy to cut into various sizes, and convenient to remove after vacuum infusion curing, making it easy to use.

[0025] In some preferred embodiments, the corrugated drainage pad 1 is composed of multiple interwoven plastic filaments, forming an overall corrugated structure.

[0026] Figure 3 and Figure 4 This is a physical image of a corrugated drainage pad according to the present invention. The corrugated drainage pad is composed of interwoven black plastic filaments (e.g., Figure 3 As shown), the whole structure forms a wavy structure (such as...). Figure 4 (As shown).

[0027] It should be noted that, in practice, in order to ensure that the corrugated drainage pad 1 is a whole, the corrugated drainage pad 1 is prepared by the following method: PP or HDPE is melted to form a viscous melt, which is then spun into molten plastic filaments through a spinneret. The lip of the spinneret is provided with two rows of upper and lower spinneret holes. Vacuum adsorption devices are provided on both sides of the molten plastic filaments. The molten plastic filaments leaving the spinneret holes are drawn together from both sides by the vacuum adsorption devices, causing the molten plastic filaments to melt and bond together at a set position, forming a stable, corrugated, three-dimensional network structure with a three-dimensional central channel. At the same time, the molten plastic filaments are rapidly cooled and shaped by air cooling or water cooling to maintain their three-dimensional structure, thus obtaining the corrugated drainage pad.

[0028] It should also be noted that, in this utility model, the "multiple interwoven corrugated plastic filaments" refers to at least two interwoven corrugated plastic filaments.

[0029] In some preferred embodiments, the distance between two adjacent wave crests in the corrugated drainage pad 1 is 4 to 6 mm.

[0030] In some preferred embodiments, the height between two adjacent crests and troughs in the corrugated drainage pad 1 is 2.5 to 3.5 mm.

[0031] In some preferred embodiments, the diameter of the corrugated plastic filament is 0.5 to 1.0 mm.

[0032] In some preferred embodiments, the corrugated plastic filament is made of polypropylene or high-density polyethylene.

[0033] In some preferred embodiments, the thickness of the polyester surface felt sleeve 2 is 0.45~0.55 mm.

[0034] In some preferred embodiments, the basis weight of the polyester surface felt sleeve 2 is 100~120 g / m. 2 .

[0035] Furthermore, this utility model does not impose any special limitations on the preparation method of the provided resin guide strip for vacuum infusion; for example, it can be prepared according to the following method: the polyester surface felt is pre-wrapped on the outer surface of the corrugated drainage pad by ultrasonic wrapping composite method, specifically: an ultrasonic vibrating head (frequency 25~35 kHz, power 800~1200 W) is used to perform linear composite along the axial direction of the drainage groove of the corrugated drainage pad, and then the polyester surface felt sleeve is rolled and shaped to ensure that it fits the contour of the corrugated drainage pad with a porosity of <2%.

[0036] The applicant declares that this utility model illustrates a resin guide belt for vacuum infusion through the above-described specific embodiments, but this utility model is not limited to the above-described specific embodiments, that is, it does not mean that this utility model must rely on the above-described specific embodiments to be implemented. Those skilled in the art should understand that any improvements to this utility model fall within the protection and disclosure scope of this utility model.

Claims

1. A resin guide belt for vacuum infusion, characterized in that, The resin guide belt for vacuum infusion includes a corrugated drainage pad (1) and a polyester surface felt sleeve (2). The polyester surface felt sleeve (2) is wrapped around the outer surface of the corrugated drainage pad (1), and has openings at both ends for resin to flow through.

2. The resin guide belt for vacuum infusion according to claim 1, characterized in that, The corrugated drainage pad (1) is composed of multiple interwoven plastic filaments.

3. The resin guide belt for vacuum infusion according to claim 1, characterized in that, The distance between two adjacent wave crests in the wave-shaped drainage pad (1) is 4~6 mm.

4. The resin guide belt for vacuum infusion according to claim 2 or 3, characterized in that, The height between two adjacent crests and troughs in the wave-shaped drainage pad (1) is 2.5~3.5 mm.

5. The resin guide belt for vacuum infusion according to claim 2, characterized in that, The diameter of the plastic filament is 0.5~1.0 mm.

6. The resin guide belt for vacuum infusion according to claim 2, characterized in that, The plastic filaments are made of polypropylene or high-density polyethylene.

7. The resin guide belt for vacuum infusion according to claim 1, characterized in that, The thickness of the polyester surface felt sleeve (2) is 0.45~0.55 mm.

8. The resin guide belt for vacuum infusion according to claim 1 or 2, characterized in that, The polyester surface felt sleeve (2) is made of polyester fiber felt, and the basis weight of the polyester fiber felt is 100~120 g / m. 2 .

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