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Topper leverages an offshore plastic mold making plant with a lower cost structure in order to offer lower pricing than Topper's competitors.

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Topper is ISO 9001:2008 certified, and Topper processing quality systems ensure that your parts are the highest quality possible for your applications.

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Technical Articles

Quality Control for the Injection Molding of Automotive Interior Parts

Posted: 09/25/2024 12:09:33
Hits: 2

Plastic products are extensively used in automobile production. As the automotive industry continues to develop, the use of plastic products is also increasing. Plastic products are commonly used in the manufacture of automotive parts due to their advantages, including lightweight, corrosion resistance,...

Solutions to Defects in Injection Molding of Automotive Interior Parts

Posted: 09/15/2024 11:09:48
Hits: 1

Abstract: As a critical component of automotive systems, interior parts have complex structures and serve multiple functions. During processing, they are prone to quality issues such as deformation, cracking, and surface roughness. If not addressed promptly, these issues can affect the appearance and...

The Glossiness of Injection Molded Products

Posted: 05/09/2024 07:05:36
Hits: 11

Problems such as spots, glossy spots or inconsistent gloss on injection molded parts are typical appearance issues we encounter during our work, which may be affected by the mold or part design. Let's start with the overall gloss of the part, as this is the easiest issue to address....

Painting Injection Molding Parts

Posted: 12/21/2023 06:12:38
Hits: 5

Injection molding is a widely used manufacturing process that involves injecting molten material into a mold to create various parts and products. While injection molding provides excellent precision and efficiency, the final parts often require additional finishing touches to enhance their appearance...

How to Distinguish Various Types of Plastics?

Posted: 09/17/2022 11:09:22
Hits: 4

Distinguishing plastic products by burning and smells Items Burning conditions Burning flame Being away from the fire Smells PP It is easy to melt and drip. Yellow on top and blue on bottom Less smoke and keep burning Having a smell of petroleum PE It...

Characteristics of Plastics

Posted: 07/28/2022 03:07:59
Hits: 4

Plastics mainly have the following characteristics: Most plastics are light, chemically stable, and will not rust. Plastics have good impact resistance. Plastics have good transparency and wear resistance. Plastics have good insulation and low thermal conductivity. Plastics have good general formability,...

The Stamping Industry

Posted: 05/25/2022 08:05:10
Hits: 2

Under the background of global warming, the low-carbon economy mode based on low energy consumption and low pollution has attracted the attention of all countries in the world, and low-carbon development has also become an inevitable trend of current social development. With the convening of the Copenhagen...

Assembly and Quality Control of Plastic Parts

Posted: 04/21/2022 09:04:48
Hits: 12

1. Assembly At present, the industrial assembly for plastic workpieces is mechanical methods, adhesive methods and friction heat methods. Mechanical methods include snap fits, screws, rivets, and pressure welding. The mechanical method is used to detach workpieces such as car light sets and...

Plastic Automotive Exterior Parts

Posted: 04/09/2022 08:04:10
Hits: 2

Background The development of plastics abroad has a history of hundreds of years. From the initial ordinary plastics to the later engineering plastics and now to the special plastics that can completely replace some metals, plastics seem to have the development trend of replacing metals. Facing the...