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Injection Molding Blog | Plastic Mold Manufacturing Insights | JBRplas

Technical insights on plastic injection molding, mold manufacturing, material selection, and quality — from the JBRplas engineering team. Articles cover DFM …

Thin-Wall Injection Molding — High-Speed, High-Pressure Processing for Wall Thickness Under 1.5 mm
Featured
Thin-Wall Injection Molding — High-Speed, High-Pressure Processing for Wall Thickness Under 1.5 mm

A product design team at a consumer electronics company is developing a next-generation tablet back cover — a PC/ABS enclosure measuring 250 × 175 × 6 mm, with …

Jul 31, 2026 12 min read
Ejector System Design for Injection Molds — Pins, Blades, Stripper Plates, and Return Sequencing
07/30 Ejector System
Ejector System Design for Injection Molds — Pins, Blades, Stripper Plates, and Return Sequencing

A mold designer is reviewing T1 samples from a new tool for a medical device housing — a …

14 min Read
Injection Molding vs Urethane Casting — How to Choose the Right Process for Low-to-Mid Volume Plastic Parts
07/29 Urethane Casting
Injection Molding vs Urethane Casting — How to Choose the Right Process for Low-to-Mid Volume Plastic Parts

A product development team at a medical device startup has finalized the design of a …

9 min Read
Warpage in Injection Molding — Root Causes, Prediction, and How to Fix It
07/28 Warpage
Warpage in Injection Molding — Root Causes, Prediction, and How to Fix It

A quality manager at an automotive supplier is reviewing the dimensional report for a …

12 min Read
Cooling System Design for Injection Molds — Channels, Baffles, Bubbler Tubes, and Reynolds Math
07/27 Cooling System
Cooling System Design for Injection Molds — Channels, Baffles, Bubbler Tubes, and Reynolds Math

A mold maker receives a tooling RFQ for a polypropylene container — 180 mm diameter, 120 …

13 min Read
Plastic Part Cost Reduction — Design, Process, and Tooling Strategies That Lower Per-Unit Cost
07/24 Cost Reduction
Plastic Part Cost Reduction — Design, Process, and Tooling Strategies That Lower Per-Unit Cost

A procurement engineer at a contract manufacturer receives a cost-down target: reduce the …

10 min Read
Sink Marks in Injection Molding — Root Causes and How to Prevent Them
07/23 Sink Marks
Sink Marks in Injection Molding — Root Causes and How to Prevent Them

A quality engineer at a consumer electronics manufacturer is staring at a cosmetic reject. …

11 min Read
Gate Design Guide for Injection Molds — Types, Placement, and Vestige Management
07/22 Gate Design
Gate Design Guide for Injection Molds — Types, Placement, and Vestige Management

A mold designer at a contract manufacturer receives a part file for a transparent …

15 min Read
Insert Molding Design Guide — Metal Inserts, Thermal Expansion, and Pull-Out Strength
07/22 Insert Molding
Insert Molding Design Guide — Metal Inserts, Thermal Expansion, and Pull-Out Strength

A design engineer at an industrial equipment manufacturer is finalizing a pump housing …

13 min Read
Ultrasonic Welding for Plastic Parts — Joint Design, Material Compatibility, and Process Control
07/21 Ultrasonic Welding
Ultrasonic Welding for Plastic Parts — Joint Design, Material Compatibility, and Process Control

A product design team at a consumer electronics company is assembling a two-piece ABS …

11 min Read
PEEK and High-Performance Plastics Injection Molding — A Technical Guide for Demanding Environments
07/20 PEEK
PEEK and High-Performance Plastics Injection Molding — A Technical Guide for Demanding Environments

A design engineer at a medical device company is specifying the housing for an implantable …

14 min Read