Technical News
Explore practical guidance on compression molding, rubber and silicone injection molding, and machine selection. Articles cover melamine tableware, urea toilet seats, brake pads, EVA foam and composites, with insights into materials, molds and production conditions.
Recent Technical Articles
Read the summaries, then select an article to open the full guide. For earlier posts, use All Articles / Monthly Archive.
Prepreg vs SMC Charge Design: Why Layup and Flow-Fill Plans Need Separate Validation
Continuous-fiber prepreg carries a planned fiber path into the mold; chopped-fiber SMC uses charge placement and controlled flow to fill it. Learn why their trial plans and press RFQs differ.
October 22, 2026/by tw.hanchangShould Brake Pad Slots and Chamfers Be Moulded or Machined After Hot Pressing?
Brake pad slots and chamfers should follow the approved functional drawing—not habit. Compare moulded-in features with downstream machining and specify the hot press and finishing line on one scope.
October 21, 2026/by tw.hanchangCan More Pressure Replace Binder Cure in Rubber Tile Molding? When Heating Is Required
More pressure cannot replace binder cure in recycled rubber tile molding. Learn when heat is required and how to control mixing, loading, holding and removal.
October 19, 2026/by tw.hanchangWhy Does Melamine Tableware Crack After Molding? Separate Demolding Stress, Cooling and Cure Shrinkage
A melamine crack is not automatically a low-pressure problem. Its first appearance and origin help separate release, cooling, tooling and cure causes.
October 18, 2026/by tw.hanchangRubber Injection Short Shots or Burn Marks? Separate Shot Size, Venting and Premature Scorch Before Raising Pressure
Rubber injection short shots and burn marks are not automatically pressure problems. Separate metering, flow restriction, trapped air, scorch and undercure.
October 17, 2026/by tw.hanchangWhy Do Glass-Fiber Composite Parts Warp After Compression Molding? Check Charge Flow and Fiber Orientation Before Raising Pressure
Glass-fiber composite warpage is not automatically a tonnage problem. Map charge flow, fiber orientation, heat and controlled trials before changing the press.
October 16, 2026/by tw.hanchangDo Brake Pads Still Need Post-Curing After Hot Pressing?
A demoulded brake pad is not automatic proof of a completed cure. This guide separates in-mould hot pressing from oven post-curing and explains validation, bottlenecks, and equipment selection.
October 15, 2026/by tw.hanchangCan You Reuse a UF Toilet Seat Molding Recipe After a Mold Change?
A saved UF toilet seat molding recipe is a controlled starting point, not automatic production approval. This guide covers mold and material identity, changeover trials, consecutive-part checks and recipe control for single- and double-layer presses.
October 14, 2026/by tw.hanchangCan Melamine Decals and Glazing Powder Be Pressed Together? Keep the Stages Separate
Decorated melamine crockery is not completed by loading decal paper and glazing powder together. Follow separate body-molding, decal and glazing programs, then plan labor, cycle time and press specifications around the full sequence.
October 13, 2026/by tw.hanchangHow Many Composite Presses Can One Operator Tend? Balance Manual Work and Machine Time
Cure time alone does not determine how many composite presses one operator can tend. Map manual work, walking, machine windows and variation before assigning independent presses to one operator.
October 12, 2026/by tw.hanchangHow to Size a UF Toilet Seat RF Preheater: Match kW to the Batch and Press Schedule
Higher kW is not automatically better. Match a UF toilet seat RF preheater to the actual lid and ring charges, trial condition, handoff and press-loading schedule.
October 11, 2026/by tw.hanchangDrum Brake Lining Hot Press vs Bonding and Riveting: Which Machine Do You Need?
A hot press makes and cures a drum brake lining. Bonding or riveting equipment attaches the finished lining to a shoe. Compare the stages before requesting machinery.
October 10, 2026/by tw.hanchang
