| Q & A Network - Toolingdocs.com - are molding a label, which is basically a flat plate with hooks. We are using curved tunnel gating to the underside of the part. We have problems in delamination at the gate and...
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options. The first is to use a gate on the underside of the part, such as a curved tunnel gate. The second option is to cut a sliver off one side of the end of an ejector pin...
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| Engineering Plastics Gate Type Tunnel gate. View larger format A variation of the tunnel gate design is the curved tunnel gate where the tunnel is machined in the movable mold half. This is not suitable for...
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| Marplex Technical Library jump gates, direct centre sprues, diaphragm gates, sub gates, chisel gates and curved tunnel gates. download pdf Injection Moulding of Marplex Thermoplastics Topics covered:...
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| [pdf] design fundamentals are similar that of tunnel gating, encountered in two plate molds. The preferred gate location is on a corner or curved sur- face of the rib/core, which ensures adequate...
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| [pdf] Layout 1 long holes, e.g., knife handles. SECTION B-B SECTION C-C TUNNEL OR SUBMARINE SUBMARINE GATE DESIGN Narrow angle submarine gate will break off on mold opening POOR DESIGN Wide...
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| Pin Gate Frustration: IDES - The Plastics... |
| The part that caught my attention this month represents two problems that have plagued molders for as long as I have been in plastics: poorly designed pin gates and an unbalanced runner system. |
| Basics of Tab Gates: IDES - The Plastics... |
| This month’s discussion revolves around a flat, edge-gated part. In this case, a tab gate is used as the edge gate. |
| Injection Mold Design of Gates: IDES - The... |
| Every injection mold design has to have a gate, or an opening through which the molten plastic is injected into the cavity of the mold. The type and size of gate plays a very significant role in the process of injection molding and must not be overlooked. |
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