Plastic Part Design For Ultrasonic Welding

Ad High Performance Wide Range Structural Adhesives Bonding Plastic and Metal. An energy director design is used with almost all ultrasonic welding plastic part designs except when the materials are semi-crystalline.

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One of the key factors to successful ultrasonic welding is good component design in particular the shape of the surfaces to be joined ie the joint design.

Plastic part design for ultrasonic welding. As these have a narrow glass transition temperature range they tend to move quickly into a liquid state rather than the gummy-ness typical of. Energy Director Design. When designing plastic parts to be assembled by ultrasonic welding engineers have several options.

Avoid design-ing parts with threads of 32 or finer pitch. The size and rigidity of the parts. 17 Ultrasonic Welding 17 Ultrasonic Staking 18 Ultrasonic Spot Welding 18 Ultrasonic InsertsHeat Inserts.

Thus assembly of sub-components is critical for manu-. Ultrasonic welding of thermoplastic materials is by far the most common form of ultrasonic assembly and is used extensively in all major industries including. Part Design for Ultrasonic Welding Technical Information PW-3 Branson 41 Eagle Road Danbury CT 06813-1961 203 796-0400 fax 203 796-9838 email.

The main feature of this joint is a small 90 or 60 triangular-shaped ridge molded into one of the mating surfaces. 18 rows The process of ultrasonic welding of plastics is achieved by applying a vibrating metal tool. A slight excess of molten material can usually be tolerated while insufficient interference may result.

Do not use tapered threads such. There are a variety of joint designs possible each with specific features and advantages. 1 Introduction to Joining Despite designers goals of molding single component pro-ducts there are many products too complex to mold as a single part.

Which to choose depends on many factors including the materials. Many small and medium sized consumer products are secured within plastic packaging. Ad High Performance Wide Range Structural Adhesives Bonding Plastic and Metal.

Thanks to intelligent software and variant diversity the ultrasonic welding machines can be specifically configured to your demands. The butt joint with energy director is the most common joint design used in ultrasonic welding and the easiest to mold into a part. And performance requirements such as joint strength cosmetics and leak-tightness.

Perhaps the most widely known use case for ultrasonic welding is plastic packaging. The choice of design depends on the following factors. This machine series allows for complex ultrasonic joining of injection molded plastic parts and nonferrous metals.

Conventional plastic welding techniques such as ultrasonic and hot stamping on the other hand require contact with the outer surfaces of the parts being joined and this. Not only can we design and form custom packaging our ultrasonic equipment can add tamper. Ultrasonic Plastic Joining Technical Information PW-3 Part Design for Ultrasonic Welding Ultrasonic energy has been used to join thermo - plastics for over 35 years.

Section 4 ultrasonic welding section 5 laserIR welding section 6 RF welding section 7 and hot gasextrusion weld-ing section 8. Plastic assemblies specifically designed for ultrasonic welding incorporate geometries at the interface between the two-or-more components that help initiate plastic melt in the weld joint area. A butt joint a step joint a tongue-and-groove joint and a shear joint.

DESIGN REQUIREMENTS Inserthole design will vary with each application but a sufficient volume of plastic must always be displaced to fill voids created by knurled and undercut areas of the insert. Two categories for plastic parts. For example without a means of alignment built into the joint it is impossible to predict where the parts will be positioned after.

It offers many advantages including process reliability and repeatability lower energy usage than other joining techniques material savings because there is no need for consumables such as glue or mechanical fasteners and labor savings. Ultrasonic welding is a widely recognized and accepted process for joining thermoplastic materials. While it is possible to ultrasonically weld plastic materials without specific joint design details the weld process is greatly enhanced by adding proven features that aid in the process.

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