Warum durchsichtige Handyhüllen gelb werden und sich lösen

Last night, a Russian customer texted me asking for help saying that the transparent PC+TPU case she bought at another factory turned yellow in a month. This has affected their brands and increased their aftersales job. Here is her message.

I think there are a lot of mobile phone accessories customers have such an experience: Transparent phone cases they bought from many Chinese factories quickly turn yellow and foggy, all goods were piled up in the warehouse and could not be sold anymore, many dealers even return them.

Why transparent mobile phone cases becomes yellow, foggy and hardy after a period of time? To solve this problem, our factory Grandshine has a set of technical solutions developed by ourselves.At present, many big international brands are customized transparent mobile phone cases in our factory, no customer has complained about a yellow phone case in ten years.Here’s a simple solution:

Ursachen und Lösung:
1）Causes: Tpu material contains a vulcanizing agent, which will turn yellow after a long time of use, which is determined by the nature of vulcanizing agent.
     Solution: Add anti-yellow vulcaning agent, which is mainly used in products that need to be exposed and have higher quality. 

2) Ursache: Ultraviolette Strahlung, während des Gebrauchs kann die Sonne / das Licht ultraviolette Strahlung erzeugen, wodurch Kunststoff gelb wird.
    Lösung: Wählen Sie TPU- oder PC-Material mit UV-Schutz.

3) Cause: Poor quality tpu raw materials. Poor quality raw materials will also accelerate the yellowing.
    Lösung: Kaufen Sie qualitativ hochwertiges Rohmaterial oder arbeiten Sie mit Grandshine-Patentmaterial.

4) Ursache: Unzureichende Produktionsausrüstung und Technologie des Ingenieurteams
    Solution:Work with experienced factory like Grandshine. All Grandshine phone cases passed CE,Rohs,Reach and CA65 certificate. Grandshine provides service as product’s design, plastic injection Schimmel,silicone product mold,metal casting mold,phone/tablet cases manufacture,bracket and comsumer electronic product manufacture. Welcome visit www.grashine.com oder senden Sie eine E-Mail an mrkaiwin@163.com