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New melt-flow balancing for stack molds.


MeltFlipper technology for correcting unbalanced fining of multi-cavity molds has now been extended for use in multi-face tools such as stack molds. Beaumont Technologies in Erie, Pa., says its newly patented MeltFlipper Max (Multi-Axis) technology may also be used to eliminate core-shift problems by balancing high-and low-flow melt streams.

MeltFlipper Max runner modifications can be applied anywhere before the melt enters the cavity, such as inside the hot-runner drop, in the manifold manifold

In mathematics, a topological space (see topology) with a family of local coordinate systems related to each other by certain classes of coordinate transformations. Manifolds occur in algebraic geometry, differential equations, and classical dynamics.
, or at the sprue sprue, chronic disorder of the small intestine caused by impaired absorption of fat and other nutrients. Two forms of the disease exist. Tropical sprue occurs in central and northern South America, Asia, Africa, and other specific locations. . The initial concept, designed for stack molds, can be used in hot or cold runners, nozzles, or manifolds This is a list of particular manifolds, by Wikipedia page. See also list of geometric topology topics. For categorical listings see and its subcategories. Generic families of manifolds
  • Euclidean space, Rn
  • n-sphere, S
. Meltflipper Max is suited to two-face, two-plate, or three-plate molds with multiple cavities.

MeltFlipper technology reorients the melt in a runner to combat the tendency to form layers of different temperature and viscosity owing to owing to
prep.
Because of; on account of: I couldn't attend, owing to illness.

owing to prepdebido a, por causa de 
 higher shear shear: see strength of materials.
Shear

A straining action wherein applied forces produce a sliding or skewing type of deformation.
 near the runner wall. Wherever a standard runner divides, it splits these layers unevenly and sends hotter, more fluid melt in one direction and cooler, thicker melt in the other. MeltFlipper Max first splits and then rejoins the flows in a special ring channel. High- and low-flow areas of the polymer (shown here as orange and white color, respectively) are homogenized ho·mog·e·nize  
v. ho·mog·e·nized, ho·mog·e·niz·ing, ho·mog·e·niz·es

v.tr.
1. To make homogeneous.

2.
a. To reduce to particles and disperse throughout a fluid.

b.
 in the ring.

Beaumont also developed an automated software program used to diagnose mold problems and speed mold start-up and commissioning. New "5 Step Process" software helps to identify mold-imbalance issues using a fast and easy method for diagnosing cavity-to-cavity variations. The software is template driven, so users fill in shot weights for each cavity. The software generates reports that benchmark mold-filling performance and show the effectiveness of any changes. Tel: (814) 899-6390, www.meltflipper.com
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Copyright 2003, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Title Annotation:Injection Molding
Publication:Plastics Technology
Date:Nov 1, 2003
Words:268
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