TWM501355U - Foaming container structure - Google Patents

Description

Foamed container structure

The present invention relates to a foaming container structure, in particular to a foaming layer on the container which has an increased thickness, good hydrolysis resistance, good scratch resistance, better heat insulation effect, improved processing speed and reduced energy consumption. By.

According to the conventional foaming container, a polypropylene (PU), polyethylene (PE) or PLA material is coated on the surface of the container as a foaming material, and then the container and the foaming material are simultaneously baked. A material such as polypropylene (PU), polyethylene (PE) or PLA is formed on the surface of the container to form a foamed layer.

However, in the above-mentioned conventional use of polypropylene (PU), polyethylene (PE) or PLA as a foaming material, since polypropylene (PU), polyethylene (PE) or PLA is only a simple plastic material, When polypropylene (PU), polyethylene (PE) or PLA is heated in baking, there is often a case where the foaming effect is not good, and when the baking temperature is heated to 120 ° C, the polyethylene (PE) paper cup is inside. The film is prone to overheating and film removal.

In addition, when the surface of the container is baked and heated by using polypropylene (PU), polyethylene (PE) or PLA as a foaming material, since the baking method is simultaneous heating of the container and the foaming material, the fact is Only the foaming material needs to be heated. Therefore, both the container and the foaming material absorb the heat energy generated during baking during the heating process, so that, in addition to the inability to control the heating time and temperature, the container is more And the foaming material is connected to heat to generate energy loss.

Therefore, in order to improve the above-mentioned shortcomings, the creators of this case have devoted themselves to research and development of a "foaming container structure" to effectively improve the disadvantages of the conventional use.

The main purpose of this creation is to achieve a thickness of the foam layer on the container. Increased, good hydrolysis resistance, good scratch resistance, better insulation effect, improved process speed and reduced energy consumption. .

For the above purposes, the present invention is a foamed container structure comprising: a container; and a foamed layer disposed on at least one surface of the container, the foamed layer being uniformly coated with a foamed material Or heat-molded after printing on the surface of the container, and the foamed material is mixed with a food grade PU dispersion, polyvinyl alcohol (PVA), a foaming agent, a tackifier and an additive.

In one embodiment of the present invention, the container is a paper cup, a paper tray or a paper lunch box.

In one embodiment of the present invention, the foam layer is applied to the outer surface of the container.

In one embodiment of the present invention, the foam layer is applied to the inside surface of the container.

In one embodiment of the present invention, the foam layer is disposed on the outer and inner surfaces of the container.

In an embodiment of the present invention, the foaming material may comprise 70% to 90% of food grade PU dispersion, 5% to 15% of polyvinyl alcohol (PVA), and 0% to 10% of foaming. A mixture of 1% to 5% tackifier and 0% to 3% additives.

In one embodiment of the present invention, the blowing agent may be a food grade chemical foaming agent, a physical foaming agent or a mechanical foaming agent.

In one embodiment of the present invention, the tackifier may be a food grade sodium polyacrylate, polyisobutene, Xanthan Gum or Gurdlan.

In one embodiment of the present invention, the additive may be a bridging agent, a chain extender, an antifoaming agent or a catalyst, and the bridging agent may be a food grade polyaziridine, Di-aziridine, polycarbodiimide or cyclopolyiimie, the defoaming agent. It can be food grade silicon, silicon compound, polyether, alcohol, alcohol compound, amide or parafin wax.

In one embodiment of the present invention, the foaming material has a heating temperature of 100 ° C ± 10 ° C.

In one embodiment of the present invention, the foamed material is heated in a microwave oven.

In one embodiment of the present invention, the microwave oven is heated between 400 and 800 w for 30 seconds ± 10%.

In one embodiment of the present invention, the foamed material is at least 6 times thicker after being formed into a foamed layer by heating.

1‧‧‧ container

2, 2a‧‧‧Foam layer

Fig. 1 is a schematic view showing the appearance of the first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view showing the first embodiment of the present invention.

Fig. 3 is a schematic view showing the appearance of the second embodiment of the present creation.

Fig. 4 is a schematic view showing the state of the cross section of the second embodiment of the present invention.

Fig. 5 is a schematic view showing the appearance of a third embodiment of the present creation.

Fig. 6 is a schematic cross-sectional view showing the third embodiment of the present invention.

Please refer to the "1st and 2nd drawings" for the appearance of the first embodiment of the present invention and a schematic view of the cross-sectional state of the first embodiment of the present invention. As shown in the figure: The present invention is a foamed container structure comprising a container 1 and a foamed layer 2.

The container 1 mentioned above is a paper cup, a paper tray or a paper lunch box. The container 1 of the present invention is a paper cup as an embodiment.

The foamed layer 2 is disposed on the outer surface of the container 1, and the foamed layer 2 is uniformly coated or printed on the surface of the container 1 by a foaming material, and the foamed material comprises a food grade PU. 70%~90% food grade PU dispersion, 5%~15% polyvinyl alcohol (PVA), 0% mixed with dispersion, polyvinyl alcohol (PVA), foaming agent, tackifier and additives ~10% foaming agent, 1%~5% tackifier and 0%~3% additive, wherein the foaming agent can be food grade chemical foaming agent, physical foaming Or a mechanical foaming agent, the tackifier may be a food grade sodium polyacrylate, polyisobutene, Xanthan Gum or Gurdlan, and the additive may be a bridging agent, a chain extender, Defoaming agent or catalyst, the bridging agent may be food grade polyaziridine, Di-aziridine, polycarbodiimide or cyclopolyiimie, etc., the defoaming agent may be food grade silicon, silicon compound, polyether, alcohol, alcohol compound, amide or parafin Wax. If so, a completely new foamed container structure is constructed by the above structure.

When the present creation is made, the foamed material is uniformly coated on at least one side of the container 1, and then heated by the microwave oven 3 by heating for 30 seconds ± 10% between 400w and 800w, and the foamed material is heated. Reaching a heating temperature of 100 ° C ± 10 ° C and containing from the foamed material It has a sticky polyvinyl alcohol (PVA) and a food-grade PU dispersion with high polymer water solubility. Therefore, when the microwave oven 3 is used for heating, the microwave oven 3 can be directly heated in the foaming material according to the characteristics of heating only the aqueous solution. After being heated, the polyvinyl alcohol (PVA) uniformly generates a plurality of closed bubbles on the surface of the container 1, so that the food-grade PU dispersion adheres to the surface of the container 1 without waste of heat source, thereby improving the process speed. And reducing the production energy consumption, so that the foamed material can be heated to form a foamed layer 2 on one side of the container 1, and the foamed material is at least 6 times thicker after being heated to form the foamed layer 2. In this way, the effect of increasing thickness, good hydrolysis resistance, good scratch resistance and better heat insulation effect can be achieved.

Please refer to the "3rd and 4th drawings" for the appearance of the second embodiment of the present invention and the schematic view of the second embodiment of the present invention. As shown in the figure, in addition to the configuration of the first embodiment, the present embodiment may be the structural form of the second embodiment, and the difference is that the foam layer 2a can utilize the above The manner of the first embodiment is provided on the inner side surface of the container 1, so as to achieve the same effect as the first embodiment, and further, the creation can be made to meet the needs in actual use.

Please refer to FIG. 5 and FIG. 6 for a schematic view of the appearance of the third embodiment of the present invention and a schematic view of the third embodiment of the present invention. As shown in the figure, in addition to the structural forms mentioned in the first and second embodiments, the present invention may also be the structural form of the third embodiment, and the difference is that the foam layer 2 is 2a can be provided on the surface provided on the outer side and the inner side of the container by the method of the first embodiment, and the container 1 can be insulated and maintained in addition to the same effect as the first embodiment. The effect, in turn, makes this creation more suitable for the actual use.

In summary, the foaming container structure can effectively improve various disadvantages of the conventional use, and the foamed layer on the container can be increased in thickness, good in hydrolysis resistance, good in scratch resistance, better in heat insulation effect, and high in process speed and reduction. The effect of energy-consuming production; in turn, the creation of this creation can be more progressive, more practical, and more in line with the needs of consumers. It has indeed met the requirements for the creation of a patent application, and has filed a patent application according to law.

However, the above is only the preferred embodiment of the present invention, and the scope of the creation of the present invention cannot be limited by this; therefore, the simple equivalent changes and modifications made by the scope of the patent application and the content of the creation specification are All should remain within the scope of this creation patent.

1‧‧‧ container

2‧‧‧Foam layer

Claims (13)

A foaming container structure comprising: a container; and a foaming layer disposed on at least one surface of the container, wherein the foaming layer is uniformly coated on the surface of the container with a foaming material, and is heated and formed. The foamed material is a mixture of a food grade PU dispersion, a polyvinyl alcohol (PVA), a foaming agent, a tackifier, and an additive. The foamed container structure according to claim 1, wherein the container is a paper cup, a paper tray or a paper lunch box. The foamed container structure according to claim 1, wherein the foamed layer is provided on an outer surface of the container. The foamed container structure according to claim 1, wherein the foamed layer is provided on the inner side surface of the container. The foamed container structure according to claim 1, wherein the foamed layer is provided on the outer and inner surfaces of the container. The foamed container structure according to claim 1, wherein the foamed material may comprise 70% to 90% of a food grade PU dispersion, 5% to 15% of a polyvinyl alcohol (PVA), 0%~10% foaming agent, 1%~5% tackifier and 0%~3% additive. The foamed container structure according to claim 6, wherein the foaming agent is a food grade chemical foaming agent, a physical foaming agent or a mechanical foaming agent. The foamed container structure according to claim 6, wherein the tackifier is a food grade sodium polyacrylate, polyisobutene, Xanthan Gum or Gurdlan. The foamed container structure according to claim 6, wherein the additive may be a bridging agent, a chain extender, an antifoaming agent or a catalyst, and the bridging agent may be a food grade polyaziridine or Di-aziridine. Polycarbodiimide or cyclopolyiimie, the antifoaming agent can be food grade silicon, silicon compound, polyether, alcohol, alcohol compound, amide or parafin wax. The foamed container structure according to claim 1, wherein the foaming material has a heating temperature of 100 ° C ± 10 ° C. The foamed container structure according to claim 1, wherein the foamed material is heated in a microwave oven. The foamed container structure according to claim 11, wherein the microwave oven is heated between 400w and 800w for 30 seconds ± 10%. The foamed container structure according to claim 1, wherein the foamed material has a thickness of at least 6 times after being formed by heating to form a foamed layer.