Plastic packaging methods are thermoplastic and cold plastic. ?

Thermoplastics use multi-stage temperature control and rolling heating to generate high temperature to shape plastic packaging films and data pages. ?

Cold forming is to use viscous or magnetic plastic packaging film to shape plastic packaging film and data page without heating.

Cold-mounted film is made of transparent PVC through adhesive backing. According to the texture of the film surface, it can be divided into bright film, matte film and protective film with special texture. Optical film and dumb film are widely used in advertising production. Use cold mounting machine and other equipment to mount the cold mounting film on the photo printed picture to prevent the picture (printed surface) from being scratched, polluted or damp, thus protecting the picture.

Status quo of star signature photos:

There are uncertain factors in the identification of the authenticity of star signatures, and no experts can identify them at present, so it is difficult to supervise. If the buyer finds something wrong with the goods, he can report it to Taobao. Once a commodity is reported many times, they will investigate it. The authoritative judicial authentication center has a handwriting authentication department, but it does not accept the business of "authenticating the authenticity of star signatures".

In Europe and America, star signature items are also very popular. In order to prevent sellers from filling in the blanks, European and American sellers usually attach COA(CertificateofAuthority (COA) when selling star signatures. Once COA certificate is found to be forged or received too many complaints, the auction website will blacklist it.