METHOD FOR MANUFACTURING A TABLEWARE ARTICLE HAVING A THERMAL-TRANSFER PRINTED PATTERN

• US 20200130242A1
• Filed: 03/11/2019
• Published: 04/30/2020
• Est. Priority Date: 10/29/2018
• Status: Active Grant

• Current Assignee: NAN YA Plastics Corporation
• Original Assignee: NAN YA Plastics Corporation
• Inventors: LIN, FONG-CHIN, SU, TZONG-YANG
• Granted Patent: US 11,633,888 B2
• Time in Patent Office: Days
• CPC Class Codes: B29B 7/46 with more than one shaft
• CPC Class Codes: B29B 7/90 Fillers or reinforcements , e.g. fibres
• CPC Class Codes: B29B 9/06 in the form of filamentary material, e.g. combined with extrusion
• CPC Class Codes: B29B 9/12 characterised by structure or composition
• CPC Class Codes: B29C 2045/0079 applying a coating or covering
• CPC Class Codes: B29C 2795/007 after shaping
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/7207 of the moulded articles
• CPC Class Codes: B29C 71/0063 for changing crystallisation
• CPC Class Codes: B29K 2067/00 Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/0032 Pigments, colouring agents or opacifiyng agents
• CPC Class Codes: B29K 2509/00 Use of inorganic materials not provided for in groups B29K2503/00 - B29K2507/00, as filler
• CPC Class Codes: B29K 2995/0022 Bright, glossy or shiny surface
• CPC Class Codes: B29L 2007/002 Panels; Plates; Sheets
• CPC Class Codes: B29L 2031/7132 Bowls, Cups, Glasses
• CPC Class Codes: B29L 2031/7404 Dishes
• CPC Class Codes: B41M 5/0064 on plastics, horn, rubber, or other organic polymers
• CPC Class Codes: B41M 5/38207 characterised by aspects not provided for in groups B41M5/385 - B41M5/395
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 3/203 : Solid polymers with solid and/or liquid additives
• CPC Class Codes: C08K 2003/3045 : Sulfates
• CPC Class Codes: C08K 3/30 : Sulfur-, selenium- or tellurium-containing compounds
• CPC Class Codes: C08L 67/02 : Polyesters derived from dicarboxylic acids and dihydroxy compounds C08L67/06 takes precedence

Abstract

A method for manufacturing a tableware article having a thermal-transfer printed pattern includes the following steps. Firstly, a PET resin composition including 3 to 15% by weight of an inorganic filler is provided. Next, the PET resin composition is granulated to obtain plastic granules. Then, the plastic granules are molded into the tableware article and the tableware article is post-crystallized. Finally, a thermal transfer printed pattern is printed on a surface of the post-crystallized tableware article.

Claims

1. A method for manufacturing a tableware article having a thermal-transfer printed pattern, comprising:

providing a PET resin composition including 3 to 15% by weight of an inorganic filler;

granulating the PET resin composition to obtain plastic granules;

molding the plastic granules into the tableware article and post-crystallizing the tableware article; and

forming the thermal transfer printed pattern on a surface of the post-crystallized tableware article.

2. The method according to claim 1, wherein the inorganic filler is barium sulfate.

3. The method according to claim 1, wherein in the step of granulating the PET resin composition, the PET resin composition is added to a twin-screw extruder and melted at a temperature between 250°

C. and 280°

C. for granulation.

4. The method according to claim 1, wherein the step of post-crystallizing the tableware article includes subjecting the tableware article to heat treatment at a temperature between 150°

C. and 200°

C.

5. The method according to claim 4, wherein the tableware article is subjected to heat treatment for a period of time between 10 minutes and 30 minutes.

6. The method according to claim 4, wherein the heat treatment temperature is higher than or equal to a temperature for forming the thermal transfer printed pattern.

7. The method according to claim 1, wherein the step of post-crystallizing the tableware article includes irradiating the tableware article with infrared rays.

8. The method according to claim 7, wherein the tableware article is irradiated for a period of time between 10 minutes and 20 minutes.

9. The method according to claim 1, wherein in the step of forming the thermal transfer printed pattern, the tableware article is subjected to thermal transfer under a vacuum environment with a pressure between 150 torr and 760 torr and a temperature between 150°

C. and 200°

C.

10. The method according to claim 1, wherein the PET resin composition further includes 1 to 10% by weight of at least one additive selected from one or a combination of two of a lubricant, an antioxidant, a stabilizer, and a coloring agent.