CN102249040B - Unsaturated polyester resin container meeting food packaging requirements - Google Patents

Abstract

The present invention relates to a container, in particular to an unsaturated polyester resin container that meets the requirements of food packaging. It comprises an unsaturated polyester resin container outer shell and an inner shell whose material meets the requirements of food packaging, wherein the outer shell is sleeved outside the inner shell, and the inner shell is fixed inside the outer shell by a detachable fixing connector. This container can ensure that it meets the hygienic requirements of food packaging and is very convenient to disassemble and wash. This container has an elegant and noble appearance and can be made into a cup, a fruit plate, a candy can, a tea can, etc., and has use, appreciation and collection value.

Description

A kind of unsaturated polyester resin container meeting food packaging requirements

technical field

The invention relates to an unsaturated polyester resin container meeting food packaging requirements.

Background technique

As we all know, unsaturated polyester resin products cannot pass the food hygiene and safety inspection.

Cups, tea tins, candy tins, fruit bowls, etc. are daily household items. At present, their outer packaging materials are mostly traditional paper, plastic, iron, ceramics, or glass. Their single appearance design cannot meet the personality of the fashion generation. The pursuit of globalization and diversification.

Because the material of unsaturated polyester resin is suitable for hand-painting or artistic sculpture, and has the characteristics of rich colors and crystal clear, it can be embedded with various natural ornaments, and can create a rich image of imitation metal, imitation jade and other noble materials. At present, it is mostly used as a handicraft, or a container without hygienic requirements. At the same time, in a society with different styles of home decoration products, some unsaturated polyester resin handicraft manufacturers have begun to develop unsaturated polyester to make cups, tea pots, candy jars, fruit plates, etc.

However, due to the inherent characteristics of unsaturated polyester resin, cups, tea cans, candy cans, fruit plates, etc. made of this material cannot meet the food hygiene and safety inspection standards, cannot enter the sales channels of regular supermarkets, and cannot meet product inspection and quarantine. export requirements, thus greatly restricting the production of this product and the development of the industry. Many companies have tried to pre-embed an unsaturated polyester resin container that can pass the food hygiene safety inspection standard in the unsaturated polyester resin shell with gorgeous appearance, but due to the Most of the openings are open, and unsaturated polyester resin containers are easily contaminated by unsaturated polyester resin during processing. It is also very easy to damage the container during the polishing process of polyester resin residue. Once the container is easily stained by uncured unsaturated polyester resin or damaged when removing the residue, the entire product is scrapped. Therefore, how to ensure that the open built-in container is not contaminated by unsaturated polyester resin has become a bottleneck that cannot be overcome in production technology, so the idea of pre-embedding cannot be realized.

In addition, the mouth of the unsaturated polyester resin container that meets the hygienic standard is in contact with the unsaturated polyester resin, especially when it is used as a mouth cup, the unsaturated polyester resin is not allowed to contact the user's mouth. In addition, when the food packaging container is washed, the water in contact with the unsaturated polyester resin is not allowed to flow into the container. This also puts forward requirements for the cleaning of composite containers made of unsaturated polyester resin and non-unsaturated polyester resin containers meeting hygienic standards. Therefore, how to solve the cleaning problem as a food packaging container is also a technical problem to be solved in applying unsaturated polyester resin to food packaging containers.

Contents of the invention

The problem to be solved by the present invention is to overcome the defects that packaging containers such as mugs, tea tins, candy tins, and fruit bowls made of unsaturated polyester resin cannot meet the food hygiene and safety inspection standards and are not easy to clean.

On the basis of repeated experiments, the inventor has developed an unsaturated polyester resin container that meets the requirements of food packaging. The unsaturated polyester resin container is very convenient to remove and wash.

The specific scheme of the present invention is: an unsaturated polyester resin container meeting the requirements of food packaging, characterized in that it includes an outer shell of an unsaturated polyester resin container, an inner shell whose material meets the requirements of food packaging, and the outer shell covers the outer shell of the inner shell , and the inner shell is fixed in the outer shell through a detachable fixed connector.

Further, the upper edge of the inner shell is turned outward to form a flanging, which covers the upper mouth of the outer shell, or the flanging is located above the upper mouth of the outer shell, so that when used as a water cup, the mouth contacts the inner shell Non-unsaturated polyester resin, as other food packaging containers, also ensures that food cannot contact the shell of unsaturated polyester resin.

There is a gap between the inner shell and the outer shell, and the detachable fixed connector can be located at the mouth and middle of the outer shell, and further, the detachable fixed connector is located at the bottom center of the outer shell and the inner shell. This can make most of the inner shell and the outer shell not in contact, and the outer shell will not pollute the inner shell if it is stained with water, and the heat of the inner shell is not easily transferred to the outer shell when it is used as a mouth cup.

The bottom of the shell is provided with a through hole on the outside of the connection position with the inner shell. The through hole is conducive to drainage and prevents water from accumulating in the shell during cleaning.

In one of the preferred methods, the detachable fixed connector includes a threaded rod on the end face of the outer bottom of the inner shell, a hole is provided in the middle of a connector, the connector is fixed on the bottom of the outer shell, and the threaded rod on the end face of the inner shell is connected from the connector The inner side of the connector extends into the hole, and a nut is locked on the threaded rod on the outer side of the connector.

In the second preferred method, the detachable fixed connector includes a threaded rod and a nut on the end surface of the outer bottom of the inner shell, the nut is fixed on the bottom of the outer shell, and the threaded rod of the inner shell is screwed into the nut.

In the third preferred method, the detachable fixed connector includes a threaded rod on the end surface of the outer bottom of the inner shell, a connecting piece with a screw hole is fixed on the bottom of the outer shell, and the threaded rod at the bottom of the inner shell is screwed on In the screw hole of the connector.

In the fourth preferred method, the detachable fixed connector includes a ball-shaped buckle head arranged at the center of the outer bottom of the inner shell, and a middle part of a connector is provided with a button that coincides with the ball-shaped buckle head. A spherical buckle hole, the connector is fixed on the bottom of the outer shell, and the buckle head on the inner shell is inserted into the buckle hole on the connector to connect the inner shell to the outer shell.

In the fifth preferred method, the detachable fixed connector includes several horizontally protruding pendants at the bottom of the inner shell, a groove on the connector, and a number of L-shaped cards corresponding to the pendants on the wall of the groove The connecting piece is fixed at the bottom of the outer shell, and the pendant is screwed into the bayonet to fix the inner shell in the outer shell.

In the unsaturated polyester resin container meeting the food packaging requirements of the present invention, the unsaturated polyester resin outer shell and the inner shell that can meet food hygiene requirements are connected by a detachable fixed connector, so they can be processed and cleaned separately, which solves the problem of processing Or the pollution of the inner shell during the cleaning process, and the food will not touch the outer shell, which meets the hygienic requirements of food packaging, and the use of unsaturated polyester resin outer shell can meet the decoration and aesthetic requirements of the container. Can be made into mugs, fruit bowls, candy tins, tea tins, etc.

Description of drawings

Fig. 1 is the shell structural representation of embodiment mouth cup;

Fig. 2 is the schematic diagram of the type A inner shell of embodiment mouth cup;

Fig. 3 is the schematic diagram of the Type A connector of the mouth cup of the embodiment;

Fig. 4 is the schematic diagram of the nut of the mouth cup in embodiment 1;

Fig. 5 and Fig. 6 are the three-dimensional views after the combination of the outer shell of the middle mouth cup and the A-type connecting piece in embodiment 1;

Fig. 7 is the general assembly schematic diagram of embodiment 1;

Fig. 8A is a sectional view of the assembly of Embodiment 1, and Fig. 8B and Fig. 8C are perspective views of the assembly of Embodiment 1;

Fig. 9 is a perspective view of the B-type inner shell of the middle mouth cup in embodiment 3;

Fig. 10 is a perspective view of the B-type connector of the middle mouth cup in embodiment 3;

Fig. 11 is a schematic diagram of the combination of the middle mouth cup shell and the B-type connector in embodiment 3;

Fig. 12A and Fig. 12B are perspective views of the middle mouth cup shell of embodiment 3; Fig. 12C is a cross-sectional view of the middle mouth cup shell of embodiment 3;

Fig. 13 is the general assembly schematic diagram of embodiment 3;

Fig. 14A, Fig. 14B are the perspective view after the assembly of embodiment 3; Fig. 14C is the sectional view after the assembly of embodiment 3;

Fig. 15 is the schematic diagram of embodiment 4 connector;

Fig. 16A, Fig. 16B are the three-dimensional view after the assembly of embodiment 4; Fig. 16C is the sectional view after the assembly of embodiment four;

17A and 17B are perspective views of the inner shell of Embodiment 5;

Fig. 17C is a sectional view of the inner shell of embodiment 5;

Figures 18A and 18B are perspective views of the D-shaped connector and the bayonet socket in Embodiment 5; Figure 18C is a cross-sectional view of the D-shaped connector in Embodiment 5;

Fig. 19A is the perspective view after the assembly of embodiment 5;

Fig. 19B is a sectional view after the assembly of embodiment 5;

Fig. 20A, Fig. 20B and Fig. 20C are schematic diagrams showing that the edges of the Type A inner shell, the Type B inner shell and the Type C inner shell can be set to roll outwards to form a flange.

Detailed ways

The present invention will be described in further detail below in combination with specific embodiments, so as to facilitate understanding of the content of the present invention.

The unsaturated polyester resin containers meeting the requirements of food packaging in the present invention all include an unsaturated polyester resin container shell. Due to the excellent manufacturability of the unsaturated polyester resin, it is easy to form decorative effects with different styles. It also includes an inner shell made of materials that meet the requirements of food packaging, which is used as the main body of the food to ensure compliance with the hygienic requirements of food packaging. Said material conforming to food packaging requirements means that the material is one of food-grade glass, resin, metal or ceramics or a composite material thereof. The outer shell is set outside the inner shell to avoid contact with the food in the inner shell, and the inner shell is fixed in the outer shell through a detachable fixed connector, which can be connected with a detachable fixer so that the inner shell and the outer shell can be processed separately , Cleaning, processing, and cleaning are completed and then easily assembled together, which is also conducive to separate cleaning operations in the later stage.

Taking the mouth cup as an example below, five embodiments of the mouth cup are given to illustrate the implementation of the present invention;

Embodiment 1 Type A mouth cup

The mouth cup includes an unsaturated polyester resin container shell 1 as shown in FIG. 1 , and various colors, pattern decorations, or different texture effects can be formed on the surface or inside by different technological means. It also includes a type A inner shell 2 as shown in Fig. 2 and Fig. 20A that is made of food-grade plastic or metal and meets food packaging requirements to form a container for drinking water (or other food).

As shown in Figure 8A, the unsaturated polyester resin outer shell 1 is set outside the inner shell 2 that meets the food packaging requirements, and the bottom is assembled and connected together by a detachable connector composed of a type A connector 3, a nut 7 and a screw.

The structure of the detachable connector is shown in Figure 2, including a screw 6 integrally formed at the center of the outer bottom of the inner shell 2, and a connector 3 as shown in Figure 3, with a hole 5 in the middle of the connector 3, and as A nut 4 shown in Figure 4. First, the Type A connector 3 is fixed on the bottom of the outer shell 1 according to the traditional connection method of unsaturated polyresin fittings, such as pouring, see Figure 5 and Figure 6, and then the Type A inner shell 2 is inserted into the outer shell 1, and the Type A inner shell The screw 6 on the 2 is aligned with the hole 5 on the inner side of the Type A connector 3, and the nut 7 locks the screw 6 on the Type A inner shell 2 firmly from the outside of the hole 5, so the Type A inner shell 2 is firm and Fittingly locked in the shell 1, as shown in Fig. 7 and Fig. 8 .

As mouth cup, if adornment is to dress food such as tealeaves, candy, food only contacts the inwall of inner shell 2. If it is used as a cup for holding water, the mouth will touch the outside of the upper edge of the cup when drinking water, so as shown in Figure 20A-Figure 20C, the upper edges of the inner shells 2, 8, 14 are turned outward to form a flange 4, and the The upper mouth of the shell is covered, or the flange is located above the upper mouth of the shell 1 as shown in FIG. 8A . Such people's mouths cannot touch the unsaturated polyester resin shell 1 that does not meet the hygienic standard when drinking water.

As shown in FIG. 8A , there is a gap between the inner shell 2 and the outer shell 1 , and the detachable fixed connector is located at the bottom center of the outer shell and the inner shell. Since the unsaturated polyester resin has a certain shrinkage during pouring and curing, it is difficult to ensure that the shell specifications are consistent. The existence of this gap makes the shell space have a certain buffer margin to ensure the installation of the inner shell, and the fixed connection is the bottom. A central position, ie so that the center of gravity of the inner shell is at the fixed point, also facilitates assembly. At the same time, the inner and outer shells are not in contact, which can also prevent the inner and outer shells from contacting and heat transfer, and prevent additives in the outer shell that do not meet food hygiene standards from spreading and polluting between the outer shell and the inner shell.

A through hole can be provided around the hole position 5 on the connecting piece 3 at the bottom of the inner shell, so that even if water enters the outer shell, it can be discharged through the through hole to avoid breeding bacteria in the outer shell.

Using independent connectors, materials different from unsaturated polyester resin can be used, so as to facilitate the processing and setting of the connection structure with the inner shell, which can ensure the processing accuracy and hardness, and directly process screw holes on the unsaturated polyester resin shell, etc. The wear resistance is poor and the accuracy is difficult to guarantee, which affects the assembly quality.

Example 2 Type B cup

The difference between this embodiment and embodiment 1 is that the nut is fixed in the shell. First fix the nut 7 in Figure 4 directly at the center of the bottom of the outer shell 1 in Figure 1 according to the traditional connection method of unsaturated polyacid resin accessories, and then insert the Type A inner shell 2 into the outer shell 1, as shown in Figure 2 The screw rod 6 on the type A inner shell 2 is aligned with the nut 7, as shown in Figure 8A and the screw rod 6 on the type A inner shell 2 is screwed into the nut 7, so the type A inner shell 2 is firmly and fitfully locked in In the shell 1, the mouth cup of this structure is actually the two-in-one connecting piece 3 and nut 7. Both can tap the teeth matching the screw rod 6 in the hole 5 of the Type A connector 3, or cast the nut on the bottom of the Type A inner shell, and rotate the Type A inner shell 2 to make the screw on the Type A inner shell 2 The screw rod 6 is directly locked on the type A connector 3 .

Embodiment 3 Button-type mouth cup

In this embodiment, the detachable fixed connector includes a ball-shaped buckle 10 at the center of the outer bottom of the B-type inner shell 8 as shown in Figure 9. As shown in Figure 10, a B-type connector 9 is provided in the middle with a The spherical buckle hole 11 matched with the spherical buckle head, as shown in Figure 11, fixes the connector 9 on the bottom of the shell 1 by bonding or casting, and the spherical buckle hole 11 corresponds to the middle hole of the shell 1, as shown in the figure 12A, 12B, and 12C, and then insert the Type B inner shell 8 into the outer shell 1 as shown in Figure 13 to form the manner shown in Figures 14A, 14B, and 14C, and insert the buckle head 10 into the connector at the bottom of the shell 1 In the buckle hole 11, the B-type inner shell 8 is firmly connected with the outer shell 1, and matches, so that the inner shell is connected with the outer shell. Forcefully pull out the B-type inner shell 8 from the outer shell 1, and the buckle head 10 is separated from the buckle hole 11, which is convenient for the detachment and washing of the B-type inner shell 8 and the outer shell 1.

Embodiment 4 Bottom-type mouth cup

The detachable fixed connector in this embodiment includes the C-type connector 12 as shown in Figure 15, and there is a screw hole 13 with internal thread in the middle of the connector 12, as shown in Figures 16A-16C, the C-type connector is first connected Part 12 is fixed on the bottom of shell 1, and there is threaded rod 6 on the end surface of the cup bottom of Type A inner shell 2. Insert Type A inner shell 2 into shell 1, and screw threaded rod 6 into screw hole 13 of Type C connector 12 Inside, make it lock mutually, and A-type inner casing 2, outer casing 1 and C-type connector 12 are just combined into a firm, anastomotic whole, as shown in Figure 16. The connecting piece 12 can be fixed with the outer shell 1 , or buckled on the bottom of the outer shell 1 , and the outer shell 1 is clamped by the connecting piece 12 and the inner shell 2 .

Embodiment 5 Screw-on cup

The detachable fixed connector in this embodiment, as shown in Figure 17A-Figure 17C, includes several radially protruding pendants 15 provided at the bottom of the C-shaped inner shell 14, correspondingly as shown in Figure 18A-Figure 18C There are corresponding grooves on the D-shaped connector 16, and several L-shaped bayonets 17 corresponding to the pendant 15 are arranged on the groove wall. As shown in Figure 19B, the D-shaped connector 16 is first fixed on the bottom of the housing 1, that is, the C-type The inner shell 14 is inserted into the outer shell 1, and the pendant 15 is screwed into the bayonet 16. The C-shaped inner shell 14, the outer shell 1 and the D-shaped connector 16 form a firm and consistent whole, as shown in Figures 19A and 19B.

In the above embodiment, the A-type inner shell 2 as shown in Figure 20A, the B-type inner shell 8 as shown in Figure 20B and the C-type inner shell 14 as shown in Figure 20C are adopted respectively, and the edge of the mouth can also be 4. It is designed in the shape of rolling outwards, so that the connection between the inner and outer shells is smoother and more consistent, and the structure is more scientific and reasonable.

The manufacturing method of containers such as fruit trays, candy jars, and tea jars is basically the same as that of the cups. As described in the preferred embodiment, the inner and outer shells are easy to install and easy to disassemble and wash. The containers made by this method have an elegant and noble appearance , the mouthful cups or fruit bowls or candy tins or tea tins and other containers made by this method have the value of use, appreciation and collection.

Claims (10)

1. An unsaturated polyester resin container meeting food packaging requirements, characterized in that: it includes an unsaturated polyester resin container shell and an inner shell whose material meets the requirements of food packaging, and the outer shell is set outside the inner shell, and can be disassembled The fixed connector fixes the inner shell in the outer shell. 2 . The container according to claim 1 , wherein the upper edge of the inner shell is turned outward to form a flange to cover the upper mouth of the outer shell, or the flange is located above the upper mouth of the outer shell. 3 . 3. The container according to claim 2, wherein there is a gap between the inner shell and the outer shell, and a through hole is formed at the bottom of the outer shell. 4. The container according to any one of claims 1 to 3, characterized in that: the detachable fixed connector includes a threaded rod on the end surface of the outer bottom of the inner shell, and there is a hole in the middle of a connector, and the connector is fixed At the bottom of the shell, the threaded rod on the end face of the inner shell extends into the hole from the inside of the connecting piece, and a nut is locked on the threaded rod on the outside of the connecting piece. 5. The container according to any one of claims 1 to 3, characterized in that: the detachable fixed connector includes a threaded rod on the end surface of the outer bottom of the inner shell, and a nut, the nut is fixed on the bottom of the outer shell, The threaded rod of the inner shell is screwed into the nut. 6. The container according to any one of claims 1 to 3, characterized in that: the detachable fixed connector includes a threaded rod on the end surface of the outer bottom of the inner shell, and a threaded rod with a screw hole is fixed on the bottom of the outer shell The connecting piece, the threaded rod at the bottom of the inner shell is screwed into the screw hole of the connecting piece. 7. The container according to any one of claims 1 to 3, characterized in that: the detachable fixed connector includes a ball-shaped buckle head arranged at the center of the outer bottom of the inner shell, one connecting There is a spherical buckle hole in the middle of the piece that matches the spherical buckle head, the connecting piece is fixed on the bottom of the outer shell, and the buckle head on the inner shell is inserted into the buckle hole on the connecting piece, so that The inner shell is connected with the outer shell. 8. The container according to any one of claims 1 to 3, characterized in that: the detachable fixed connector includes several radially protruding pendants at the bottom of the inner shell, a groove on one connector, The wall of the groove has several L-shaped bayonet sockets corresponding to the pendant, the connecting piece is fixed on the bottom of the shell, and the pendant is screwed into the bayonet socket so that the inner shell is fixed in the shell. 9. The container according to any one of claims 1 to 3, wherein the material conforming to food packaging requirements means that the material is one of food-grade glass, resin, metal or ceramics or a composite material thereof. 10. The container according to any one of claims 1 to 3, characterized in that: the container is a mug, a fruit plate, a candy jar or a tea jar. the

Images