阅读说明：本技术 托盘及其加工方法 (Tray and processing method thereof ) 是由 刘赟桥 陈红砖 于 2020-07-21 设计创作，主要内容包括：本发明提供了一种托盘及其加工方法,涉及食品加工技术领域,主要目的是研发一种具有较高强度、环保安全易降解且具有较好的防水防油效果的食品用托盘。该托盘的边缘高度高于中间区域的高度,且所述托盘由板材和至少覆盖在所述板材的上表面的覆膜组成,所述板材由木质材料制成,所述覆膜为疏水疏油膜；其加工步骤为：木材加工：对完整的木材进行切割切片处理,得到板材薄片；覆膜处理：在高温下对所述板材的上表面进行覆膜处理,或同时对所述板材的上下表面进行覆膜处理,所述覆膜为疏水疏油膜；模切加工：对上述物料进行切割得到托盘型胚；热压成型：将托盘型胚放入热压机的模具内进行热压；干燥定型,对得到的托盘进行干燥处理得到定型的托盘。(The invention provides a tray and a processing method thereof, relates to the technical field of food processing, and mainly aims to develop a food tray which has high strength, is environment-friendly, safe and easily degradable and has good waterproof and oilproof effects. The edge height of the tray is higher than that of the middle area, the tray is composed of a plate and a coating film at least covering the upper surface of the plate, the plate is made of a wood material, and the coating film is a hydrophobic and oleophobic film; the processing steps are as follows: wood processing: cutting and slicing the complete wood to obtain a sheet; film coating treatment: coating a film on the upper surface of the plate at a high temperature, or simultaneously coating the upper surface and the lower surface of the plate, wherein the film is a hydrophobic and oleophobic film; die cutting and processing: cutting the materials to obtain a tray blank; hot-press molding: putting the tray-shaped blank into a mould of a hot press for hot pressing; and drying and shaping, namely drying the obtained tray to obtain the shaped tray.)

1. The tray is characterized in that the edge height of the tray is higher than the height of the middle area, the tray is composed of a plate and a coating film at least covering the upper surface of the plate, the plate is made of a wood material, and the coating film is a hydrophobic and oleophobic film.

2. The tray of claim 1, wherein the sheet material has a thickness of not less than 0.8 mm.

3. The tray of claim 1, wherein the sheet and the film are attached together by a laminator.

4. The tray of claim 1, wherein the lower surface of the tray is also covered with the film.

5. A pallet according to any one of claims 1 to 4, characterised in that the coating is a food grade coating.

6. A method for manufacturing a pallet according to any of claims 1 to 5, comprising the steps of:

(1) wood processing: cutting and slicing the complete wood to obtain a sheet;

(2) film coating treatment: coating a film on the upper surface of the plate at a high temperature, or simultaneously coating the upper surface and the lower surface of the plate, wherein the film is a hydrophobic and oleophobic film;

(3) die cutting and processing: cutting the material obtained by the step (2) to obtain a tray blank;

(4) hot-press molding: and (4) putting the tray blank obtained by the treatment in the step (3) into a mould of a hot press for hot pressing to obtain the tray.

7. The tray processing method of claim 6, wherein the tray processed in step (4) is further dried and shaped to a moisture content of less than 10%, and the processing temperature is 25-35 ℃.

8. The method for processing a pallet as claimed in claim 6, wherein the treatment temperature of the step (2) is 160-200 ℃.

9. The method for processing a pallet as claimed in claim 6, wherein the mold of the hot press in step (4) is preheated at 110-140 ℃ for 10-15 min.

10. The method for processing the tray as claimed in claim 9, wherein the tray is pressed in the preheated mold for 18-25 s after the preheating is completed.

Technical Field

The invention relates to the technical field of food processing, in particular to a tray commonly used in the food processing industry and a processing method thereof.

Background

When food is processed, food-related processing tools and processing instruments are required to be contacted, and the characteristics of environmental protection and no pollution are required so as not to influence the food safety. Except safety, if the used related products can be waterproof and oil-proof, the cleaning is convenient, the processing efficiency can be greatly improved, and the quality safety of the processed products is ensured. At present, food trays commonly used in the market are processed by starch-based plastic or paper materials in many choices, and plastic components need to be processed in the processing process to realize the shaping of the trays; in addition, the above products have problems of low strength, difficulty in cleaning when smeared with oil or water, and even disposable products. The use of the tray causes a serious waste of resources.

In view of the above, there is a need to develop a tray that is more environmentally friendly, safe, strong, and waterproof and oil-proof.

Disclosure of Invention

The invention aims to provide a tray and a processing method thereof, and aims to solve the technical problems of low strength and poor waterproof and oilproof effects of the tray in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the edge height of the tray provided by the invention is higher than that of the middle area, the tray is composed of a plate and a coating film at least covering the upper surface of the plate, the plate is made of a wood material, and the coating film is a hydrophobic and oleophobic film.

The wooden board has guaranteed the intensity of tray itself, and the hydrophobic oleophobic membrane that covers on panel guarantees that this panel has better hydrophobic oleophobic effect when using. Therefore, the plate has the advantages of high strength, easy cleaning, environmental protection and safety when in use.

In the above technical solution, preferably, the thickness of the plate is not less than 0.8 mm.

In the above technical solution, preferably, the plate and the coating film are attached together under the action of a film coating machine.

In the above technical solution, preferably, the lower surface of the tray is also covered with the coating film.

In the above technical solution, preferably, the coating film is a food-grade coating film.

The invention also provides a processing method of the tray, which comprises the following steps:

(1) wood processing: cutting and slicing the complete wood to obtain a sheet;

(2) film coating treatment: coating a film on the upper surface of the plate at a high temperature, or simultaneously coating the upper surface and the lower surface of the plate, wherein the film is a hydrophobic and oleophobic film;

(3) die cutting and processing: cutting the material obtained by the step (2) to obtain a tray blank;

(4) hot-press molding: and (4) putting the tray blank obtained by the treatment in the step (3) into a mould of a hot press for hot pressing to obtain the tray.

In the above technical scheme, preferably, the tray processed in step (4) is further subjected to drying and shaping treatment until the water content is within 10%, and the treatment temperature is 25-35 ℃.

In the above technical solution, preferably, the treatment temperature in the step (2) is 160 to 200 ℃.

In the above technical scheme, preferably, the mold of the hot press in the step (4) needs to be preheated, the preheating temperature is 110-140 ℃, and the preheating time is 10-15 min.

In the above technical scheme, preferably, after the preheating is completed, the tray is pressed in the preheated mold for 18-25 seconds.

Compared with the prior art, the invention provides a tray and a processing method thereof, wherein the tray is composed of a plate and a coating film, the coating film is a hydrophobic and oleophobic film, the plate is made of a wood material, and the coating film is pressed on the plate by a film laminating machine under a high-temperature condition in the processing process; the plate after film covering treatment is processed into a certain shape in a die cutting machine and then processed into a finished tray product by a hot press molding processing method. The tray is made of simple materials and is not bonded by glue and the like, so that the processed tray is more environment-friendly compared with other trays; in addition, the whole tray is made of wood materials through hot pressing, has higher strength, is safe and easy to degrade, and does not pollute the environment; the coating film covered on the outer side of the wooden material enables the tray to have good hydrophobic and oleophobic effects.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a flow chart of a method of manufacturing the pallet of the present invention;

fig. 2 is a schematic cross-sectional view of the pallet of the present invention.

In the figure: 1. a plate material; 2. and (5) coating a film.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

FIG. 1 is a flow chart of a method of manufacturing the pallet of the present invention;

FIG. 2 is a schematic cross-sectional view of the pallet of the present invention.

The invention provides a tray, the edge height of the tray is higher than the height of the middle area, and the cross-sectional structure of the tray is shown in figure 2.

The tray is composed of a plate 1 and a coating film 2 at least covering the upper surface of the plate 1, wherein the plate 1 is made of a wood material, and the coating film 2 is a hydrophobic and oleophobic film. Wooden board 1 has guaranteed the intensity of tray itself, and the hydrophobic oleophobic membrane that covers on board 1 guarantees that this board 1 has better hydrophobic oleophobic effect when using. Therefore, the plate 1 has the advantages of high strength, easy cleaning, environmental protection and safety when in use.

Specifically, poplar can be selected to process the plate 1. In order to ensure the environmental protection of the plate 1, the film 2 is a food-grade film, such as PLA film-coated paper.

As an alternative embodiment, the thickness of the sheet 1 is not less than 0.8 mm. Generally, the thickness of the plate 1 is about 0.8mm to 2.0 mm.

As an alternative embodiment, in order to make the film 2 and the plate 1 better combined, the plate 1 and the film 2 are attached together under the action of a film coating machine.

Since the lower surface and other portions of the tray may be exposed to oil and water during use, the lower surface and the peripheral side of the tray may be covered with the coating film 2 in consideration of the cleaning problem.

The processing method of the tray is shown in figure 1, and comprises the following specific steps:

(1) wood processing: cutting and slicing the complete wood to obtain a sheet 1;

(2) film coating treatment: coating the upper surface of the plate 1 at high temperature, or simultaneously coating the upper surface and the lower surface of the plate 1, wherein the selected coating 2 is a hydrophobic and oleophobic membrane;

(3) die cutting and processing: cutting the material obtained by the step (2) to obtain a tray blank;

(4) hot-press molding: and (4) putting the tray blank obtained by the treatment in the step (3) into a mould of a hot press for hot pressing to obtain the tray.

It should be noted that, when the sheet material 1 is subjected to the die cutting process, the sheet material 1 with an irregular shape may be cut into a shape required by the subsequent process, and at this time, at least one tray blank, generally four tray blanks, meeting the requirements may be processed from one sheet material 1.

As an alternative embodiment, the treatment temperature of the step (2) is 160-200 ℃.

As an optional implementation mode, the die of the hot press in the step (4) needs to be preheated, the preheating temperature is 110-140 ℃, and the preheating time is 10-15 min.

As an optional embodiment, after preheating is completed, the tray is pressed in the mold for 18-25 s.

An upper die and a lower die are installed on the hot press, the upper die and the lower die are preheated to required temperatures, then the tray blank is placed into a die forming cavity, the upper die and the lower die are moved to corresponding positions, and the tray blank is subjected to hot pressing treatment. The tray parison is deformed at high temperature.

In order to maintain the shape of the tray, as an optional embodiment, the tray processed in the step (4) is further subjected to drying and shaping treatment at 25-35 ℃, and the water content of the finally obtained tray is within 10%.