The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2026
Filed:
Mar. 24, 2021
Kingfa Sci. & Tech. Co., Ltd., Guangdong, CN;
Wenjie Mo, Guangdong, CN;
Xianbo Huang, Guangdong, CN;
Nanbiao Ye, Guangdong, CN;
Wen Zhu, Guangdong, CN;
Dejun Gong, Guangdong, CN;
Jian Feng, Guangdong, CN;
Xuejun Fu, Guangdong, CN;
KINGFA SCI. & TECH. CO., LTD., Guangdong, CN;
Abstract
Provided is a laser marking shading enhanced PBT composition, comprising, in parts by weight, the following components: 50-80 parts of a PBT resin, 6-20 parts of an opacifying agent, 15-30 parts of fiberglass, 0.1-0.5 parts of an antioxidant, and carbon black accounting for 0.0033-0.033% of the weight of the opacifying agent. In the present invention, when performing compounding with only an opacifying agent and a trace amount of carbon black without the use of an expensive laser marking agent, the composition has the properties of a whiteness value of more than 90, a shading of less than 3 mm, and a color difference value of more than 15 before and after laser marking. Therefore, the composition can be applied in the field of preparing lamp cup housings, capacitors, connectors, or relay articles in the lighting industry.