TWI481493B - Progressive extrusion device - Google Patents

Description

Gradual lamination device

The present invention relates to an extrusion device, and more particularly to a progressive laminate device.

At present, there are two main ways to manufacture plastic bottles with a gradual effect in the industry, one is to use a shrink film, and the other is to use printing.

In the shrink film method, the manufactured plastic bottle is firstly covered with a gradually-colored shrink film, and then heated to shrink the shrink film to the plastic bottle. However, this method not only increases the process and cost, but also causes the shrink film to sometimes Uneven shrinkage and unevenness will affect the aesthetics of the finished product and reduce the consumer's desire to purchase and affect the sales volume.

The printing method is to spray the paint on the surface of the manufactured plastic bottle to show the gradual effect, which not only increases the process, but also the sprayed paint is easily worn off during transportation or use, which also affects the finished product. Beautiful, reduce the consumer's desire to buy and affect sales.

Accordingly, it is an object of the present invention to provide a progressive laminate apparatus that can be used to make plastic containers having a progressive effect.

Therefore, the invention gradually laminates the device and is suitable for pressing out a hollow A parison comprising a basic color layer and a gradient color layer, the progressive lamination device comprising: a press unit, a shot unit, and a die.

The press unit continuously extrudes the molten plastic, including a feed pipe for conveying the plastic, a feed port for pressing the molten plastic, and a drive module for driving the plastic to move to the feed port.

The projecting unit intermittently ejects the molten plastic, comprising a feeding pipe for conveying the plastic, a feeding port for discharging the molten plastic, and a driving module for driving the plastic to move to the feeding port.

The die is respectively connected to the pressing unit and the shooting unit, respectively receiving the plastic outputted by the pressing unit and the shooting unit, and is used for pressing out the hollow type embryo, and the pressing unit and the injection material The plastic outputted by the unit respectively forms the basic color layer of the hollow type embryo and the gradient color layer.

The effect of the invention is that the molten plastic is continuously extruded by the pressing unit, the injection unit intermittently ejects the molten plastic, and the pressing unit and the injection unit are transmitted through the die. The output plastic forms the basic color layer and the gradation color layer of the hollow type embryo, respectively, and can be used to manufacture a plastic container having a gradation effect.

2‧‧‧Brush unit

21‧‧‧Feed tube

22‧‧‧ Feeding port

23‧‧‧Drive Module

3‧‧‧jecting unit

31‧‧‧Feed tube

32‧‧‧ Feeding port

33‧‧‧Drive Module

4‧‧‧Mold

9‧‧‧Plastic bottles

91‧‧‧ outer layer

92‧‧‧ inner layer

Other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a top plan view of a preferred embodiment of the progressive laminate apparatus of the present invention; FIG. 2 is a preferred embodiment. A schematic plan view of a die of an embodiment; FIG. 3 is a side view of a die unit and a die of the preferred embodiment 4 is a side view of the injection unit and the die of the preferred embodiment; FIG. 5 is another side view of the die of the preferred embodiment; and FIG. A schematic view of a plastic bottle having a gradient effect produced by a preferred embodiment.

Referring to Figures 1, 2 and 3, a preferred embodiment of the progressive lamination apparatus of the present invention is adapted to extrude a hollow type embryo (not shown) comprising a basic color layer and a gradation color The layering device comprises: a press unit 2, a shot unit 3, and a die 4.

The press unit 2 continuously extrudes the molten plastic, comprising a feed pipe 21 for conveying the plastic, a feed port 22 for pressing the molten plastic, and a drive die for driving the plastic to move to the feed port 22. Group 23.

Referring to Figures 1, 4 and 5, the projecting unit 3 intermittently ejects molten plastic, comprising a feeding pipe 31 for conveying the plastic, a feeding port 32 for ejecting the molten plastic, and a driving the plastic to The drive module 33 is moved by the feed port 32.

Referring to FIG. 2, FIG. 5 and FIG. 6, the die 4 is respectively connected to the pressing unit 2 and the injection unit 3, respectively receiving the plastic outputted by the pressing unit 2 and the injection unit 3 and pressing The hollow type embryo is obtained, and the plastic material outputted by the pressing unit 2 and the injection unit 3 respectively form the basic color layer of the hollow type embryo and the gradient color layer, and the hollow type embryo is further formed by blowing After that, a plastic bottle 9 having a gradation effect can be produced.

Since the die 4 is a general two-layer die structure, which is familiar to the industry, it will not be described here.

In the embodiment, when the die 4 is pressed out of the hollow type embryo, the plastic outputted by the injection unit 3 is located outside the plastic output by the pressing unit 2, so the gradient layer is located. The outer layer of the basic color layer and an outer layer 91 and an inner layer 92 of the plastic bottle 9 are respectively formed after being blow molded, but are not limited thereto.

In practical use, in a pressing cycle, the pressing unit 2 continuously outputs a certain amount of molten plastic, and the amount of molten plastic outputted by the shooting unit 3 changes with time, and is matched with the pressing unit 2 And the plastic of the projecting unit 3 is modulated into different colors. For example, the inner layer 92 can use a light color as the base color, and the outer layer 91 uses a dark colored plastic, so that the thickness of the outer layer 91 can be changed. The gradation effect of the color is visually produced, but is not limited thereto.

As shown in FIG. 6, in the embodiment, the amount of molten plastic output by the projecting unit 3 decreases with time, and when the plastic color of the projecting unit 3 is heavy (outer layer 91), the formed plastic is as shown in FIG. The bottle 9 will produce a gradual color change which gradually becomes shallower from bottom to top, but the amount of molten plastic outputted by the injection unit 3 can also be increased with time (in this case, the plastic bottle 9 will gradually grow from bottom to top). The deepening gradation color change), or the change with time and increase (the plastic bottle 9 will produce a light-deep-shallow color change), is not limited to this.

In summary, the present invention can not only manufacture a plastic container having a gradation effect, but also because the gradation effect is transmitted through the ejector unit 3 The amount of plastic to be adjusted does not require an increase in the number of processes or additional costs, nor does it cause discoloration due to wear during transportation or use, thereby maintaining the aesthetics of the finished product and stabilizing the product sales. It is indeed possible to achieve the object of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

2‧‧‧Brush unit

21‧‧‧Feed tube

22‧‧‧ Feeding port

23‧‧‧Drive Module

3‧‧‧jecting unit

31‧‧‧Feed tube

32‧‧‧ Feeding port

33‧‧‧Drive Module

4‧‧‧Mold

Claims (5)

A gradual laminating device for extruding a hollow type embryo comprising a basic color layer and a gradual color layer, the gradual laminating device comprising: a pulverizing unit for continuously melting The plastic extrusion comprises a feeding pipe for conveying the plastic, a feeding port for pressing the molten plastic, and a driving module for driving the plastic to move to the feeding port; a shooting unit intermittently melting The plastic injection comprises a feeding pipe for conveying the plastic, a feeding port for discharging the molten plastic, and a driving module for driving the plastic to move to the feeding port; and a die connecting the pressing unit and the shooting respectively a material unit, respectively receiving the plastic outputted by the pressing unit and the injection unit for pressing out the hollow type embryo, and the pressing unit and the plastic outputted by the shooting unit respectively form the hollow type embryo The basic color layer and the gradient color layer. The progressive laminating apparatus of claim 1, wherein the pressing unit continuously outputs a certain amount of molten plastic during an extrusion cycle, and the amount of molten plastic output by the injection unit changes with time. . The progressive lamination apparatus of claim 2, wherein the amount of molten plastic output by the shot unit increases with time during the extrusion cycle. The progressive lamination apparatus of claim 2, wherein the amount of molten plastic output by the shot unit decreases over time during the extrusion cycle. The progressive laminating device according to claim 1, wherein the plastic outputted by the projecting unit is located at the pressure when the die is pressed out of the hollow type embryo The plastic outer layer that the material unit outputs.