injection molding vs blow molding

-

You are creating a product that will require molded plastic parts. While injection molding and blow molding are two of the most popular methods to create high-quality, affordable plastic parts and products that are cost-effective, they are not the same. Thus, their purposes and requirements are different. What's the difference?

This quick guide to injection molding and blow mold will save you time when searching for suppliers.

Products of varying types

The most obvious difference between injection molding and blow molding parts is the fact that injection molding produces solid parts while blow molding creates hollow ones.

Injection molding is a viable choice if you need to produce something with a rigid wall. Common examples of injection-molded parts include bottle caps, hair combs and housings for computers or televisions.

Blowing molding is a great option if you require a piece that can hold fluids, be flexible or structural. Bottles are the most popular example of a blow-molded product.

Blow molding is a low-cost method of creating billions of bottles. However, blow molding can be used to create a wide range of industrial parts such as coolers, fuel tanks and stadium seats. Here is a complete list of blow-molded products.

Processes that differ

Injection molding is where melted resin is injected in a hollow mold until it's completely filled. Injection molding is held together by intense pressure.

This pressure is sufficient to allow for all interior parts to be filled with high-pressure molten plastic resin. The "tonnage" pressure required to keep the mold together determines the size and cost of a product.

A plastic tube can be heated up and filled with hot plastic to form a blow mold. The mold is then placed around the "parison", trapping the plastic and allowing air to continue filling the parison until it forms the part.

The weight of the "shot" of plastic used in the mold determines the size of the machine and the associated costs.

For similar components dimensions and weights, the unit costs of injection-molded and blow-molded parts are identical.

Different types of mold

For precise control of material flow, injection molds need to have high precision matches between the mold halves. Injection molding is 90% of the work.

The rest of the process should go smoothly once you have created a functional mold that is error-free. An injection mold is generally more expensive than a blow mould because of its precision.

Blow molds allow for more flexibility between the mold halves, as each mold half creates its own wall shape. The mold is only half the battle in blow molding.

You must monitor variables like wall thickness, flash, air leaks, streaks, and flash. Wall thickness variation is one of the most significant factors for product designers. Quality control is also an imperative part. Quality oversight should be handled by a supplier's quality team.

https://www.plasticmoulds.net/injection-molding-vs-blow-molding.html?feed_id=209&_unique_id=62be9fdfe9b15

Comments

Post a Comment

Popular posts from this blog

Moulage Par Injection Et Fabricant De Moules En Chine

-
Image
Moulage Par Injection Et Fabricant De Moules En Chine-Topworks En tant que fabricant chinois de moules à injection et de moules en plastique sur mesure, Topworks est fier d'offrir à ses clients des moules et des pièces en plastique de la meilleure qualité, fabriqués à l'aide de technologies avancées. Avec plus d'une décennie d'expérience, Topworks entreprend chaque projet avec un haut niveau d'expertise et de dévouement. Nous mettons à votre disposition un personnel qualifié, compétent et dévoué qui se consacre à vos besoins en matière de moulage par injection de plastique. Topworks peut fabriquer un article complet tout au long de notre processus de fabrication, ou seulement des parties d'un système, régulièrement ou de manière ponctuelle, et offrir des services d'assemblage, d'estampage et d'emballage sur mesure lorsque cela est nécessaire et requis. OBTENIR UN DEVIS GRATUIT-30% INFÉRIEUR,15 JOURS MOINS Tous les employés de T...
Read more

what is plastic mold?

-
Image
What Is Plastic Mold?   What is plastic mold? The tooling used for plastic injection molding is called plastic mold or plastic injection mold . Most plastic products are molded by plastic molds. Plastic molds are divided into two types: thermosetting and thermoplastic mold ,according to the molding plastic characteristics. Based on the molding process, the plastic mold is divided into plastic injection mold, blow mold, casting mold, pressing mold,and so on. The injection mold is made up of two main sections: the moving half and the fixed half. The moving half is mounted on the moving platen of the injection molding equipment, and the stationary half is mounted on the stationary platen. Over the injection molding, the moving and the stationary half are shut to develop an injection structure and a cavity structure. Once the mold is open, the moving half and the stationary half are split up to clear away the plastic item from the plastic mold. As a way to decrease the mol...
Read more

Injection product stress mark solution

-
Image
On plastic injection products, especially for raw materials such as ABS, PP and PC, you will often see shiny stress marks on the surface of products, such as injector pin stress marks, insert stress marks and stress marks of wall thickness difference . These apparent shiny, white markings are the result of internal stresses , which are nothing more than orientation and cooling shrinkage stresses. The irregular stress marks near the gate are caused by the typical orientation stress, and the difference of wall thickness is the result of orientation and contraction stress, those stress marks are made by ejector pins and sliders . Normally , with the increase of holding pressure and time, the first occurrence is the stress mark of wall thickness difference, the stress mark of ejector pin, then the stress mark of meat thickness difference, and finally the irregular stress mark near the gate (gray section will appear on the side), which of course also depends on the specific structure of the...
Read more