CN102320148A - Method for manufacturing plastic box - Google Patents

Abstract

The invention discloses a method for manufacturing a plastic box body, which comprises the steps of firstly providing recycled foamed plastic, and then mixing the recycled foamed plastic and impregnated new plastic into a box body raw material. Wherein the particle size of the recycled foamed plastic is similar to that of the impregnated new plastic. Then, high temperature and high pressure are provided to mold the box raw material into a plastic box.

Description

Manufacturing method of plastic box

technical field

The invention relates to a manufacturing method of a plastic box, in particular to a cost-saving manufacturing method of a plastic box.

Background technique

With the development of semiconductor and display industry technologies, flat panel displays have been widely used in daily life. In the manufacturing process of flat panel displays, since glass substrates are easily damaged during transportation and cannot be used, the display industry has strict requirements on glass substrates in terms of packaging and transportation.

However, with the diversification of the size of the current flat panel display, manufacturers must open molds to manufacture substrate packaging boxes of various sizes in response to the substrates of various sizes. In this way, it not only increases the mold opening cost of the substrate packaging box, but also causes a considerable burden on the inventory management of these substrate packaging boxes. Moreover, these boxes are generally made of plastic materials, which will cause environmental problems if discarded arbitrarily.

Contents of the invention

In view of this, the object of the present invention is to provide a method for manufacturing a plastic box, which can recycle the discarded plastic box to save the production cost of the plastic box and conform to the trend of environmental protection.

The invention proposes a manufacturing method of a plastic box body, which includes firstly providing recycled foamed plastics, and then mixing the recycled foamed plastics with impregnated new plastics to form box body raw materials. Among them, the particle size of the recycled foamed plastic is similar to that of the new impregnated plastic. Afterwards, high temperature and high pressure are provided to form the box raw material into a plastic box.

In an embodiment of the present invention, the proportion of the above-mentioned recycled foamed plastic in the raw material of the box body is between 10% and 50%.

In an embodiment of the present invention, the proportion of the above-mentioned recycled foamed plastics in the raw materials of the box is 15%.

In an embodiment of the present invention, the recycled foamed plastic includes expanded polypropylene (EPP), and the impregnated virgin plastic includes impregnated polypropylene (PP).

In an embodiment of the present invention, the above method for recycling foamed plastics is provided, the method includes firstly providing scrapped foamed plastic products, and then crushing the scrapped foamed plastic products as the recycled foamed plastics.

In an embodiment of the present invention, the scrapped foamed plastic products mentioned above are crushed into spherical particles.

In an embodiment of the present invention, the above-mentioned recycled foamed plastics have a particle size of 3.5 cm.

In an embodiment of the present invention, the above-mentioned recycled foamed plastics are secondary foamed plastics.

In an embodiment of the present invention, the impregnated new plastic is a plastic that has undergone primary foaming.

The invention recycles the scrapped plastic boxes to be used as one of the raw materials of the plastic boxes. Therefore, the present invention can not only reduce the manufacturing cost of the plastic box, but also can reuse the scrapped plastic products to avoid the environmental pollution caused by these scrapped plastic products.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are enumerated below and described in detail below in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a flow chart of the manufacturing steps of the plastic box in an embodiment of the present invention.

Wherein, the reference signs are explained as follows:

102～106: Steps

Detailed ways

FIG. 1 is a flow chart of the manufacturing steps of the plastic box in an embodiment of the present invention. Please refer to FIG. 1, first, as described in step S102, recycled foamed plastics are provided. Specifically, the recycled foamed plastic is obtained by crushing waste foamed plastic products, for example. Taking this embodiment as an example, it is, for example, using appropriate mechanical equipment to crush scrapped expanded polypropylene (EPP) plastic boxes to obtain the above-mentioned recycled expanded plastics. That is to say, the recycled foamed plastics mentioned here are plastics after secondary foaming. It is worth mentioning that in this embodiment, for example, scrapped foamed polypropylene plastic boxes are crushed into spherical particles, but the invention is not limited thereto.

Next, as described in step S104, the recycled foamed plastic is mixed with the impregnated new plastic to form a box body raw material. Wherein, the particle size of the recycled foamed plastic is similar to that of the impregnated virgin plastic. That is to say, when crushing the discarded plastic case, the degree of crushing of the discarded plastic case depends on the particle size of the impregnated new plastic to be used subsequently. The particle size of the impregnated new plastic used in this embodiment is, for example, 3.5 cm. Therefore, in the previous step, the discarded plastic boxes are, for example, crushed into recycled foamed plastics with a particle size of approximately 3.5 cm.

In addition, the impregnated new plastic in the present invention is, for example, a plastic that has undergone a foaming and impregnation process in sequence, and its material is, for example, polypropylene.

In particular, in the raw material of the box body in this embodiment, the proportion of recycled foamed plastic is about 10% to 50%, and preferably 15%. The proportion of impregnated virgin plastic is then between 50% and 90%, and preferably 85%.

Finally, as described in step S106 , high temperature and high pressure are provided to form the raw material of the box body into a plastic box body. In step S106, the method used in this embodiment, the conditions and parameters of the manufacturing process are the same as the common manufacturing process of plastic boxes, and will not be repeated here.

To sum up, the present invention recycles the discarded plastic boxes so that they become one of the raw materials of the plastic boxes. Therefore, the present invention can not only reduce the production cost of the plastic box, but also can reuse the scrapped plastic box, so as to avoid the problems in inventory management caused by these scrapped plastic boxes.

Moreover, the present invention crushes the discarded plastic box to the same particle size as the impregnated new plastic originally intended to make the plastic box, and the shape can be spherical particles. Therefore, the reclaimed plastic and the impregnated The new plastics can have a good degree of bonding, so that the manufactured plastic box has the required strength.

Although the present invention has been disclosed above through preferred embodiments, these embodiments are not intended to limit the present invention, and those skilled in the art can modify and change the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection shall prevail as defined by the appended claims.

Claims (9)

1. the manufacturing approach of a plastic cement casing comprises:

Provide one to reclaim foamed plastic;

This recovery foamed plastic and one new plastic of impregnation is mixed into a casing raw material, and wherein, this particle diameter and this that reclaims foamed plastic particle diameter of the new plastic of impregnation is close; And

High temperature and high pressure are provided, so that this casing material forming is a plastic cement casing.

2. the manufacturing approach of plastic cement casing as claimed in claim 1, wherein, this reclaim foamed plastic in this casing raw material shared ratio between 10% to 50%.

3. the manufacturing approach of plastic cement casing as claimed in claim 2, wherein, this recovery foamed plastic shared ratio in this casing raw material is 15%.

4. the manufacturing approach of plastic cement casing as claimed in claim 1, wherein, this recovery foamed plastic comprises expanded polypropylene, and this new plastic of impregnation comprise the polypropylene of impregnation.

5. the manufacturing approach of plastic cement casing as claimed in claim 1 wherein, provides the method for this recovery foamed plastic to comprise:

The one foamed plastic goods scrapped are provided; And

Pulverize the foamed plastic goods that this is scrapped, to reclaim foamed plastic as this.

6. the manufacturing approach of plastic cement casing as claimed in claim 5, wherein, these foamed plastic goods of scrapping are pulverized is spherical particles.

7. the manufacturing approach of plastic cement casing as claimed in claim 1, wherein, the particle diameter of this recovery foamed plastic is 3.5 centimetres.

8. the manufacturing approach of plastic cement casing as claimed in claim 1, wherein, this reclaims foamed plastic and is the plastics through second time of foaming.

9. the manufacturing approach of plastic cement casing as claimed in claim 1, wherein, this new plastic of impregnation for through the plastics of one step foaming.