Vacuum Resin Infusion Control Valve – MTI®-valve (10 pack)

$39.50

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)

Purchase the MTI® Valve in a 10 pack
The MTI® valve perfects the MTI® process. It was developed to control the in-bag pressure and laminate compaction during the resin infusion process.

Description

MTI® valve perfects the MTI® process

MTI® valve perfects the MTI® process

The patented MTI® valve was developed in order to continue perfecting the vacuum infusion process. In combination with the MTI® hose it represents a cost effective system for the production of high-quality composites products.

The MTI® valve provides:

  • Standardization and further simplification of the infusion process
  • Less room for failures with setting up the process
  • Enhanced process reliability
  • Optimal fiber volume fraction
  • Laminate quality on a par with autoclave systems
  • High degree of reproducibility

Motivation behind the product

One of the most important elements in producing high quality vacuum infusion parts is to control the compaction of the preform during the infusion process. In order to understand the physics behind net compaction, fiber volume, and the effects it has on the quality of the finished composites product, we need to take a closer look into what happens during the infusion process.

The driving force behind the vacuum infusion process is a pressure differential across the fiber preform – which pushes the resin through the layup. After evacuation and prior to resin flow the absolute pressure inside the bag is uniformly low (vacuum uniformly high). When resin starts to flow the pressure inside the bag within the filled areas approaches atmospheric pressure because it is connected via the resin inlet tube to atmosphere. The pressure difference between the in-bag pressure and atmospheric pressure is the net compaction pressure that is left to press the fiber preform into the mold. This pressure differential will vary depending upon a number of factors including the pressure gradient affected by the permeability of the fiber reinforcement material being infused, and the timing of clamping the resin inlet and evacuation lines (when using the self-regulating MTI® hose this is not necessary). The less net compaction the more resin can flow into the preform. Because of this, in order to achieve a high fiber volume the layup must stay compacted at a certain level. The finished thickness of a layup will be directly related to its finished fiber volume. Compaction is achieved by pressing the layup against the forming surface during the infusion and cure stages.

Challenges

In traditional VARTM the net compaction pressure can approach zero, allowing the preform to float free within the resin resulting in laminate relaxation which leads to increased thickness and reduced fiber volume.

Solution

The MTI® valve allows closed hydraulic systems – such as the membrane tube infusion process – to easily control the in-bag pressure from the resin inlet side. Using the MTI® process, the MTI® valve is simply plugged into the resin feed line. It is designed to reduce the pressure within the resin inlet tube which in turn keeps the net compaction pressure in a range which is decisive to achieving an optimal fiber volume fraction. Using the MTI® valve simplifies and increases the reliability of the infusion process while ensuring reproducible results with the highest possible part quality.

The MTI® process with the new MTI® valve is suitable for parts of all shapes and complexity! Prototypes, small series, and batch production.

Product video

Additional informations

The MTI® valve was developed in order to continue perfecting the vacuum infusion process. In combination with the MTI® hose it represents a cost effective system for the production of high-quality composites products. The MTI® valve allows closed hydraulic systems – such as the membrane tube infusion process – to automatically control the in-bag pressure from the resin inlet side. The MTI® valve provides:

  • Optimal compaction of the laminate during the infusion process
  • Optimal fiber volume fraction
  • Less room for failures with setting up the process
  • Enhanced process reliability
  • Laminate quality on a par with autoclave systems
  • High degree of reproducibility
  • Standardization and further simplification of the infusion process

1 review for Vacuum Resin Infusion Control Valve – MTI®-valve (10 pack)

  1. Rated 5 out of 5

    James

    very usefull for my project!

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