TW201103746A - Plastic sheet and method for making the same - Google Patents

Abstract

The present disclosure provides a plastic sheet and a method for making the plastic sheet. The plastic sheet includes a substrate, the substrate contains polystyrene material. The plastic sheet further includes an abrasion resistance coating formed on one surface of the substrate. The abrasion resistance coating contains polypropylene material and additive agent(s). The method for making the plastic sheet includes: providing polystyrene material and heating it to molten state; providing a form container and rejecting the molten polystyrene into the form container to form a substrate; providing a mixture of polypropylene and additive agent(s) and heating the mixture to molten state; providing another form container and rejecting the molten mixture into the container to form an abrasion resistance coating; providing a rolling machine and rolling the substrate and the abrasion resistance coating to form a integer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic sheet having a plastic sheet property and a plastic sheet [Prior Art], and more particularly to a method for producing a highly wear-resistant material. The (4) 5 _ package material that is parked is usually required to have performance. This is because the product after packaging... has excellent wear resistance

Friction occurs, if the plastic sheet::=process=plastic: sheet ί hair, and attached to the surface of the product, causing the appearance of the product; wood ', and the commonly used to the electronic material The grinding property is poor, and Μ σ Μ 丁 ( ( ( ( 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 的 ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° ° SUMMARY OF THE INVENTION In view of this, it is necessary to provide a plastic sheet having high abrasion resistance. In addition, it is also necessary to provide a method for producing the above-mentioned plastic sheet. The secret plastic sheet comprises a base layer comprising polystyrene, and the plastic sheet further comprises a wear resistant layer formed on the surface of the base layer. The wear layer is made of polypropylene and additive materials. to make. A method for manufacturing a plastic sheet, comprising the steps of: & for a polymethylene in the pre-baked and heating the polystyrene to a smelt state; ”, a length of 1 for forming a barn, the dazzle The molten polystyrene is injected to the ★ Xuancheng container to form a base layer; the premixed polypropylene and the additive mixture is heated and the mixture 201103746 is heated to a molten state; another molding container is provided, the melting is provided The mixture is injected into the other • forming a wear layer in the forming container; a roll press is provided to roll-form the base layer with the wear layer. The plastic sheet is compared to the prior art. The material is coated on the surface of the polystyrene substrate to cover a wear-resistant layer with strong wear resistance, thereby improving the wear resistance of the polystyrene plastic sheet, and effectively preventing the polystyrene plastic sheet. The powder falling phenomenon causes the appearance of the packaged product to be unaffected. [Embodiment] Referring to FIG. 1, a plastic sheet 10 according to a preferred embodiment of the present invention includes a base layer 11 and a surface formed on the base layer 11. Wear layer 13. The base layer 1 1 is mainly made of polystyrene material. The base layer 11 may also contain a small amount of talc powder. The enrichment layer 13 is made of a mixed material of polypropylene and additives. The additive includes stearic acid and hard fat. And the color masterbatch, the color masterbatch may be white or colored. The additive may enhance the abrasion resistance and flexibility and performance of the wear resistant layer 13. The wear layer 13 is made of polypropylene, stearic acid, zinc stearate and The mass ratio of the masterbatch may be between 25 and 30: 3 to 8: 0.01 to 0.2: 0.01 to 0.5. In general, the thickness of the wear layer 13 is smaller than the thickness of the base layer 11. The plastic sheet 10 is gathered. The content of styrene may be between 55 and 65%. Referring to Figure 2, the plastic sheet 10 is formed according to a preferred embodiment of the present invention comprising the following steps: Step S1: providing a predetermined amount of polystyrene and The polystyrene is heated to a molten state. A small amount of talc may be added to the polystyrene to improve the properties of the polystyrene. 201103746 Step S2: providing a molded container, and ejecting the molten polystyrene to the Forming a base layer u in the molding container. The molding container preferably has one The rectangular bottom of the sliding bottom surface. The thickness of the base layer can be between ~ 〇 9 mm. The formed base layer 11 can be naturally cooled to room temperature (about 2 (rc ). Step S3: mixing a predetermined amount of polypropylene with additives The material is heated to a molten state. The additive comprises stearic acid, zinc stearate and color reading. The mass ratio of polypropylene, stearic acid, zinc stearate and color masterbatch in the wear layer 13 can be 25~30 : 3 to 8 : 0.01 〇 2 2 2 2 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤 步骤The ruthenium layer 13 is formed in the middle. The thickness of the wear layer 13 can be between 〇〇5 and 〇imm. The formed wear layer 13 is naturally cooled to room temperature (about 2 Torr. 〇). Step S5. A roll press is provided, and the cooled base layer 11 and the wear-resistant layer 13 are roll-formed into one body to obtain the plastic sheet 1〇. The plastic sheet 10 was subjected to a wear resistance test. The test method is as follows: The sand wheel cs_1〇 imported from the United States is grasped, and the surface of the wear layer 13 is tested for 1 turn under the condition that the test load is l〇〇〇g. The test results show that the powder loss of the plastic sheet 10 is 6~8mg, which basically reaches the wear resistance level of the polyethylene (PET) plastic (about 4mg under the same test conditions). The amount of powder dropped by the polystyrene (about 50~65mg). The plastic sheet 1 can be made into a variety of packaging sheets, such as a packaging pouch, a buffer, a tray, and the like. The plastic sheet of the preferred embodiment of the present invention can improve the wear resistance of the polystyrene plastic sheet by covering a surface of the polystyrene base layer with a wear-resistant layer having a strong wear resistance. Prevent the powder drop phenomenon of polystyrene plastic 201103746, so that the appearance of the packaged product is not affected. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a plastic sheet of a preferred embodiment of the present invention; Fig. 2 is a flow chart showing a method of fabricating a plastic sheet according to a preferred embodiment of the present invention. [Main component symbol description] Plastic sheet 10 Base layer 11 Wear layer 13

Claims (1)

201103746 VII. Patent application scope: 1. A plastic sheet comprising a base layer comprising a polystyrene material, wherein the plastic sheet further comprises a wear layer formed on a surface of the base layer, The 磨磨层 is made of polypropylene and additive materials. 2. The plastic sheet of claim 1, wherein the additive comprises stearic acid, zinc stearate, and a color masterbatch. 3. The plastic sheet according to claim 2, wherein the mass ratio of the polypropylene, stearic acid, zinc stearate and color masterbatch is 25 to 30: 3 to 8: • 0.01 to 0.2: 0.01 Between ~0.5. 4. The plastic sheet according to claim 1, wherein the plastic film material has a polystyrene content of 55 to 65%. 5. The plastic sheet of claim 1, wherein the base layer further comprises talc. 6. A method of making a plastic sheet comprising the steps of: providing a predetermined amount of polystyrene and heating the polystyrene to a molten state; • providing a shaped container to eject the molten polystyrene to the Forming a base layer in the molding container; providing a predetermined amount of the mixture of the polypropylene and the additive and heating the mixture to a molten state; 'providing another molding container, and ejecting the molten mixture into the other molding container A wear layer; a roll press is provided to roll-form the base layer and the wear layer into one body. 7. The method for producing a plastic sheet according to claim 6, wherein the additive comprises stearic acid, zinc stearate, and a color masterbatch. The method for producing a plastic sheet according to claim 7, wherein the mass ratio of the polypropylene, stearic acid, stearin and color masterbatch is 25 to 30: 3 to 8: 0.01 〜 0.2 : between 0.01 and 0.5. 9. The method of producing a plastic sheet according to claim 6, wherein the base layer and the wear layer are naturally cooled prior to roll forming.