# US 12,594,701 B2 · Meal bowl and a production process for the meal bowl

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- Number: US 12,594,701 B2
- Document ID: US12594701B2
- Status: Granted
- Kind: B2
- Application number: 18/380,663
- Filed: 2023-10-17
- Published: 2024-02-08
- Granted: 2026-04-07
- Earliest claimed: 2023-10-17
- Applicants: Yanghuan Jiang
- Inventors: Yanghuan Jiang
- Web page: https://patentgrep.com/patent/US12594701B2

## CPC

- B29C 45/14811: {Multilayered articles (B29C45/14827 takes precedence)}
- B29C 45/0001: {characterised by the choice of material}
- B29C 45/0025: {Preventing defects on the moulded article, e.g. weld lines, shrinkage marks (preventing defects on the preformed parts or layers B29C45/14836)}
- B29C 45/14008: {Inserting articles into the mould (B29C45/14827 takes precedence)}
- B29C 45/1676: {using a soft material and a rigid material, e.g. making articles with a sealing part}
- B65D 1/36: with moulded compartments or partitions
- B65D 65/42: Applications of coated or impregnated materials
- B29C 2945/761: Dimensions, e.g. thickness
- B29K 2021/003: {Thermoplastic elastomers}
- B29K 2023/12: {PP, i.e. polypropylene}
- B29K 2083/00: Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
- B29K 2995/0026: Transparent
- B29K 2995/007: Hardness
- B29L 2031/7132: {Bowls, Cups, Glasses}
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

The present invention provides a production process for a meal bowl and a meal bowl, the production process being, in sequence, a first injection molding, a first printing, a second printing, and a second injection molding, and the meal bowl obtained has upper transparent shell, pattern layer, separation layer, and soft plastic layer, and the presence of upper transparent shell eliminates the possible presence of industrial pigments, bowl bottom pattern ink or heavy metals in colored glazes, which potential harm to humans or infants, and low food safety risk.

## Claims

### Claim 1

A production process of a meal bowl, the production process comprising:
providing a transparent raw material which is injection moldable and free of industrial coloring, a high temperature resistant ink, a soft rubber with color, a first injection mold, a second injection mold, a first shaping mold, a second shaping mold, a printing machine and an injection molding machine;
heating and melting the transparent raw material through the injection molding machine and injecting the heated and molten transparent raw material into the first injection mold to obtain an upper transparent shell;
fixing the upper transparent shell inversely to the printing machine, so as to expose the bottom thereof, and printing a desired pattern on the bottom of the upper transparent shell using the high temperature resistant ink to obtain a pattern layer;
printing a separation layer covering the pattern layer on the bottom of the upper transparent shell; and
placing the upper transparent shell printed with the pattern layer and the separation layer in the second shaping mold, heating and melting the soft rubber through the injection molding machine, and injecting the soft rubber into the second shaping mold to form a soft plastic layer, wherein the soft plastic layer covers the separation layer.

### Claim 2 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the transparent raw material is Polypropylene (PP) or another food-grade plastic, wherein the food-grade plastic has a light transmittance rate of more than 95%, and the thickness of the upper transparent shell is more than 1 mm.

### Claim 3 (depends on 2)

The production process of the meal bowl according to claim 2, wherein said separation layer is a white separation layer.

### Claim 4 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the transparent raw material is PP or another food-grade plastic, wherein the food-grade plastic has a heat-resistant temperature of more than 100 degrees Celsius.

### Claim 5 (depends on 1)

The production process of the meal bowl according to claim 1, further comprising cooling the upper transparent shell in the first shaping mold, the first shaping mold having a contour identical to that of the upper transparent shell, and the first shaping mold having dimensions consistent with the cavity of the first injection mold used for molding the upper transparent shell.

### Claim 6 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the high temperature resistant ink has a heat-resistant temperature greater than 160 degrees Celsius.

### Claim 7 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the pattern layer is produced with the high temperature resistant ink by silkscreen printing or thermal transfer printing.

### Claim 8 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the soft rubber is a food-grade thermoplastic elastomer (TPE) or silicone.

### Claim 9 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the soft rubber has a heat-resistant temperature greater than 100 degrees Celsius.

### Claim 10 (depends on 1)

The production process of the meal bowl according to claim 1, wherein the soft rubber has a shore hardness of less than 80 degrees.

### Claim 11 (depends on 1)

The production process of the meal bowl according to claim 1, wherein a wrapping range of the soft rubber is less than a verge of the upper transparent shell, wherein the soft rubber wraps the bottom of the upper transparent shell to close the pattern layer and the separation layer.

### Claim 12 (depends on 1)

The production process of the meal bowl according to claim 1, further comprising cooling the meal bowl in the second shaping mold.