CN102922837A - Composite sheet used for manufacturing antistatic bearing belt and processing method of composite sheet - Google Patents
Composite sheet used for manufacturing antistatic bearing belt and processing method of composite sheet Download PDFInfo
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- CN102922837A CN102922837A CN201210437182XA CN201210437182A CN102922837A CN 102922837 A CN102922837 A CN 102922837A CN 201210437182X A CN201210437182X A CN 201210437182XA CN 201210437182 A CN201210437182 A CN 201210437182A CN 102922837 A CN102922837 A CN 102922837A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92647—Thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
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- Extrusion Moulding Of Plastics Or The Like (AREA)
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Abstract
本发明针对现有技术中制作承载带的片材的延伸率低,使得承载带的承载能力低、需要加厚承载带防止承载带损坏,使得成本增加的不足,提供一种用于制作抗静电透明承载带的复合片材及其加工方法,该复合片材由形成一体的抗静电上表层、抗静电下表层和中间层组成,所述的中间层由下列组份按质量百分比组成:GPPS树脂30%-53%、K树脂45%-68%、润滑剂2%-8%、0%-2%紫外线吸光剂、0%-4%光扩散剂,采用本组份的片材,具有良好的延伸率和承载能力;上述片材由两台挤出机经过同一口模挤出形成复合片材,采用本发明方法生产承载带,有利于承载带的高速成型,且制作出的承载带层与层间不易脱层。The present invention aims at the disadvantages in the prior art that the elongation rate of the sheet for making the carrier tape is low, so that the carrying capacity of the carrier tape is low, and the carrier tape needs to be thickened to prevent damage to the carrier tape, which increases the cost, and provides a method for making antistatic A composite sheet of a transparent carrier tape and a processing method thereof, the composite sheet is composed of an integrated antistatic upper surface layer, an antistatic lower surface layer and an intermediate layer, and the intermediate layer is composed of the following components by mass percentage: GPPS resin 30%-53%, K resin 45%-68%, lubricant 2%-8%, 0%-2% ultraviolet light absorbing agent, 0%-4% light diffusing agent, the sheet material with this component has good elongation and bearing capacity; the above-mentioned sheet is extruded by two extruders through the same die to form a composite sheet, and the method of the invention is used to produce the carrier tape, which is conducive to the high-speed molding of the carrier tape, and the produced carrier tape layer It is not easy to delaminate with the layer.
Description
技术领域 technical field
本发明涉及一种复合片材及其加工方法,特别是涉及一种用于制作抗静电承载带的复合片材及其加工方法。The invention relates to a composite sheet and a processing method thereof, in particular to a composite sheet for making an antistatic carrying belt and a processing method thereof.
背景技术 Background technique
用于包装的承载带,如包装IC等电子元器件的承载带,需具有一定的强度和韧性。随着电子元器件的精密化、小型化,电子包装材料也变得越来越窄,而目前市场上的片材的断裂延伸率只有85.0%左右,为防止在运输过程中承载带破损,需要增加其厚度来增加它的强度,致使承载带的成本高,降低了企业的效益。The carrier tape used for packaging, such as the carrier tape for packaging electronic components such as IC, needs to have certain strength and toughness. With the precision and miniaturization of electronic components, electronic packaging materials are becoming narrower and narrower. However, the elongation at break of the sheets currently on the market is only about 85.0%. In order to prevent the carrier belt from being damaged during transportation, it is necessary to Increase its thickness to increase its strength, resulting in high cost of the carrier belt, reducing the benefits of the enterprise.
同时,承载带需具有防止电子元器件在生产和运输过程中因受到静电而损坏或灰尘污染的能力。现有的用于制造抗静电透明承载带的片材是在单层片材中加入抗静电成份制成,其抗静电效果不持久。At the same time, the carrier tape needs to have the ability to prevent electronic components from being damaged by static electricity or polluted by dust during production and transportation. Existing sheets used to manufacture antistatic transparent carrier tapes are made by adding antistatic components to single-layer sheets, and the antistatic effect is not durable.
现有的承载带,为了防止紫外线的照射,其透明度低,在运输和销售过程中不易清楚识别承载带内装有的电子原器件,影响对包装内物品的识别。In order to prevent the irradiation of ultraviolet rays, the existing carrier tape has low transparency, and it is difficult to clearly identify the electronic components contained in the carrier tape during transportation and sales, which affects the identification of the items in the package.
发明内容 Contents of the invention
本发明的目的是,针对现有技术中制作承载带的片材的延伸率低,使得承载带的承载能力低、需要加厚承载带防止承载带损坏,使得成本增加的不足,提供一种用于制作抗静电透明承载带的复合片材及其加工方法,他具有良好的延伸率和承载能力。The object of the present invention is to provide a method for making the carrier tape in the prior art with the low elongation of the sheet material, making the carrying capacity of the carrier tape low, requiring thicker carrier tape to prevent damage to the carrier tape, and increasing the cost. It has good elongation and load-bearing capacity for the composite sheet and its processing method for making antistatic transparent carrier tape.
本发明的目的是通过下述技术方案实现的:The purpose of the present invention is achieved through the following technical solutions:
本发明的第一个目的是,提供一种用于制作抗静电承载带的复合片材,其由中间层、表层组成,所述的表层由抗静电上表层和抗静电下表层组成,所述中间层、抗静电上表层和抗静电下表层形成一体,所述的中间层由下列组份按质量百分比组成:GPPS树脂30%-53%、K树脂45%-68%、润滑剂2%-8%、0%-2%紫外线吸光剂、0%-4%光扩散剂;The first object of the present invention is to provide a composite sheet for making an antistatic carrier tape, which is composed of a middle layer and a surface layer, and the surface layer is composed of an antistatic upper surface layer and an antistatic lower surface layer, and the The middle layer, the antistatic upper surface layer and the antistatic lower surface layer are integrated, and the middle layer is composed of the following components by mass percentage: GPPS resin 30%-53%, K resin 45%-68%, lubricant 2%- 8%, 0%-2% UV light absorbing agent, 0%-4% light diffusing agent;
进一步地,所述的中间层由下列组份按质量百分比组成:GPPS树脂37%-48%、K树脂47%-58%、润滑剂3%-5%、紫外线吸光剂0%-1%、2%-4%光扩散剂;Further, the middle layer is composed of the following components by mass percentage: 37%-48% of GPPS resin, 47%-58% of K resin, 3%-5% of lubricant, 0%-1% of ultraviolet light absorbing agent, 2%-4% light diffusing agent;
进一步地,所述的表层由下列组份按质量百分比组成,GPPS树脂30%-52%、K树脂45%-67%、润滑剂2%-10%、0%-3%紫外线吸光剂、1%-3%抗静电剂;Further, the surface layer is composed of the following components by mass percentage, GPPS resin 30%-52%, K resin 45%-67%, lubricant 2%-10%, 0%-3% ultraviolet light absorbing agent, 1 %-3% antistatic agent;
进一步地,所述的表层由下列组份按质量百分比组成,GPPS树脂40%-47%、K树脂50%-57%、润滑剂2%-5%、紫外线吸光剂0%-3%、抗静电剂1%-2%。Further, the surface layer is composed of the following components by mass percentage, GPPS resin 40%-47%, K resin 50%-57%, lubricant 2%-5%, ultraviolet light absorbing agent 0%-3%, anti- Static agent 1%-2%.
本发明的第二个目的是,提供一种用于制作抗静电承载带的复合片材的加工方法,包括如下步骤:Second object of the present invention is to provide a kind of processing method for making the composite sheet of antistatic carrying belt, comprising the steps:
造粒:按权利要求1-4各项之一所述的比例,取中间层组份中的GPPS树脂、K树脂、润滑剂、紫外线吸光剂和表层各组份,中间层组份和表层组份分别进行造粒,得到粒径小于等于60微米的中间层原材料颗粒和表层原材料颗粒:Granulation: according to the ratio described in any one of claims 1-4, get the GPPS resin, K resin, lubricant, ultraviolet light absorbing agent and surface layer components in the middle layer components, the middle layer components and the surface layer components Parts are granulated separately to obtain intermediate layer raw material particles and surface layer raw material particles with a particle size less than or equal to 60 microns:
烘干:将所得到的中间层原材料颗粒和表层原材料颗粒分别入烘箱,分别在90±10C°温度下干燥60-90分钟;Drying: Put the obtained intermediate layer raw material particles and surface layer raw material particles into an oven respectively, and dry them at a temperature of 90±10C° for 60-90 minutes;
片材挤出:将经干燥的中间层原材料颗粒及表层原材料颗粒分别置入输料筒,由两台挤出机经过同一口模挤出三层复合片材,中间层片材挤出机温度为195-250C°,表层片材挤出机温度为200-250C°,挤出厚度为0.2-0.5mm的片材;Sheet extrusion: Put the dried intermediate layer raw material particles and surface layer raw material particles into the feeding barrel respectively, and extrude three-layer composite sheets from two extruders through the same die. The temperature of the middle layer sheet extruder 195-250C°, surface sheet extruder temperature is 200-250C°, extrude a sheet with a thickness of 0.2-0.5mm;
进一步地,在所述的烘干步骤中,在所述的中间层原材料颗粒入所述烘箱前,按前述的比例,将中间层颗粒与光扩散剂、吸水剂搅拌均匀,而后再入烘箱进行烘干,所述吸水剂的用量为所述中间层组份的0-3%;Further, in the drying step, before the intermediate layer raw material particles enter the oven, the intermediate layer particles are evenly stirred with the light diffusing agent and the water absorbing agent according to the aforementioned ratio, and then enter the oven for drying. drying, the amount of the water-absorbing agent is 0-3% of the middle layer components;
进一步地,在所述的造粒步骤中,采用双螺杆造粒机,主机的转速为30-35转/分,喂料转速为25-30转/分,熔体压力为4-6MPa;Further, in the granulation step, a twin-screw granulator is used, the speed of the main machine is 30-35 rpm, the feeding speed is 25-30 rpm, and the melt pressure is 4-6 MPa;
进一步地,所述的挤出机的上、中、下三辊温度为50-65C°。Further, the temperature of the upper, middle and lower three rolls of the extruder is 50-65°C.
本发明的第三个目的是,提供一种用于制作抗静电承载带的复合片材,其由中间层、抗静电上表层和抗静电下表层组成,所述中间层、抗静电上表层和抗静电下表层由前述方法共挤出复合制成;A third object of the present invention is to provide a composite sheet for making an antistatic carrier tape, which is composed of an intermediate layer, an antistatic upper surface layer and an antistatic lower surface layer, the intermediate layer, an antistatic upper surface layer and an antistatic upper surface layer. The antistatic lower surface layer is made by co-extrusion and compounding by the aforementioned method;
进一步地,所述片材的透光率为82-87%,雾度为6-13%。Further, the light transmittance of the sheet is 82-87%, and the haze is 6-13%.
由于本发明的复合片材由上述组份按上述方法制成,其具有良好的机械性能,其断裂延伸率在93-130%间,比现有技术的延伸率提高了10-50%,极大地提高了承载带的承载能力;同时,其具有适合的透光率和雾度,使由采用本发明片材制作的承载带既可清楚地看到内装物品,又具有良好的防紫外线的能力。本发明的片材,其抗静电效果持久。Because the composite sheet of the present invention is made by the above-mentioned components by the above-mentioned method, it has good mechanical properties, and its elongation at break is between 93-130%, which is 10-50% higher than the elongation of the prior art, very The carrying capacity of the carrier belt is greatly improved; at the same time, it has suitable light transmittance and haze, so that the carrier belt made of the sheet material of the present invention can clearly see the contents and has a good ability to prevent ultraviolet rays . The sheet material of the present invention has a long-lasting antistatic effect.
具体实施方式 Detailed ways
下面结合实施例对本发明作进一步的描述:Below in conjunction with embodiment the present invention will be further described:
本发明的复合片材,中间层和表层的主要成份均为聚苯乙烯树脂(简称GPPS树脂)和丁苯透明抗冲树脂(简称K树脂),GPPS树脂具有质轻价廉的特点,在降低成本的同时,保证了片材的成型性和稳定性;加入K树脂,不仅使复合片材具有优良的透明度、且提高了片材的抗冲击强度和抗拉伸强度,本发明配比的GPPS树脂和K树脂,使片材的延伸率得到了极大的提高;紫外线吸光剂提高了制品的耐日光性;润滑剂改善了熔体的流动性,使熔体更易挤出,同时增加了片材挤出时的润滑性,增强了片材的耐磨擦性能,尤其是在中间层和表层均加入了润滑剂,使得片材的耐磨擦性能得到了明显的提高,使制作的承载带具有良好的耐磨擦性能;本发明组份的光扩散剂在使片材具有良好的透明度的同时,兼具适合的雾度,使本发明的片材的可视性和光保护性相平衡。In the composite sheet of the present invention, the main components of the middle layer and the surface layer are polystyrene resin (GPPS resin for short) and styrene-butadiene transparent impact-resistant resin (K resin for short), and GPPS resin has the characteristics of light weight and low price. At the same time of low cost, the formability and stability of the sheet are guaranteed; adding K resin not only makes the composite sheet have excellent transparency, but also improves the impact strength and tensile strength of the sheet. Resin and K resin greatly improve the elongation of the sheet; the ultraviolet light absorbing agent improves the sunlight resistance of the product; the lubricant improves the fluidity of the melt, making the melt easier to extrude, while increasing the sheet The lubricity of the material during extrusion enhances the wear resistance of the sheet, especially the lubricant is added to both the middle layer and the surface layer, which significantly improves the wear resistance of the sheet and makes the bearing belt made It has good abrasion resistance; the light diffusing agent of the present invention not only makes the sheet have good transparency, but also has suitable haze, so that the visibility and light protection of the sheet of the present invention are balanced.
在发明中,采用两台挤塑机熔炼,同一口模共挤,三层复合的技术,可有效降低成本,简化加工工艺。采用本发明方法生产承载带,有利于承载带的高速成型,且制作出的承载带层与层间不易脱层。In the invention, two extruders are used for melting, the same die is co-extruded, and the technology of three-layer composite can effectively reduce the cost and simplify the processing technology. Adopting the method of the invention to produce the carrier tape is beneficial to the high-speed molding of the carrier tape, and the manufactured carrier tape is not easy to delaminate between layers.
实施例1Example 1
1、准备原材料:1. Prepare raw materials:
中间层原材料配方组份为GPPS树脂33%,K树脂59,润滑剂5,紫外线吸光剂1%,光扩散剂2%;The raw material formula of the middle layer is 33% of GPPS resin, 59 of K resin, 5 of lubricant, 1% of ultraviolet light absorbing agent, and 2% of light diffusing agent;
表层原材料组份为:GPPS树脂36%,K树脂56%,润滑剂5%,紫外线吸光剂2%,抗静电剂1%;The raw material components of the surface layer are: GPPS resin 36%, K resin 56%, lubricant 5%, ultraviolet absorber 2%, antistatic agent 1%;
2、造粒:2. Granulation:
将中间层原材料中的GPPS树脂、K树脂、润滑剂、紫外线吸光剂,用螺杆搅拌机进行均匀搅拌;将搅拌好的材料倒入双螺杆造粒机,挤出成颗粒,制成中间层原料。主机转速在35转/分,喂料转速29转/分,熔体压力在4MPa。制得颗粒粒径为60微米以下的原材料颗粒;The GPPS resin, K resin, lubricant, and ultraviolet light absorbing agent in the raw materials of the middle layer are uniformly stirred with a screw mixer; the stirred materials are poured into a twin-screw granulator, extruded into granules, and made into raw materials for the middle layer. The host speed is 35 rpm, the feeding speed is 29 rpm, and the melt pressure is 4MPa. Produce raw material particles with a particle size of less than 60 microns;
将表层原材料用螺杆搅拌机进行均匀搅拌;将搅拌好的材料倒入双螺杆造粒机,挤出成颗粒,制成表层原料。主机转速在31转/分,喂料转速25转/分,熔体压力在5MPa制得颗粒粒度为60微米的原材料颗粒;The surface layer raw materials are uniformly stirred with a screw mixer; the stirred materials are poured into a twin-screw granulator, extruded into granules, and made into surface layer raw materials. The speed of the main machine is 31 rpm, the feeding speed is 25 rpm, and the melt pressure is 5 MPa to obtain raw material particles with a particle size of 60 microns;
3、烘干:3. Drying:
将中间层原材料颗粒与光扩散剂及吸水剂混合搅拌均匀,入烘箱,干燥时间在90分钟,烘干温度在90度;Mix and stir the raw material particles of the middle layer with the light diffusing agent and the water absorbing agent evenly, and put them into the oven, the drying time is 90 minutes, and the drying temperature is 90 degrees;
其中吸水剂的加入量按其说明书,一般为不超过中间层原材料各组份总质量的3%。也可以不加入吸水剂。The amount of water-absorbing agent added is generally not more than 3% of the total mass of each component of the middle layer raw material according to its instructions. It is also possible not to add a water absorbing agent.
将表层原材料颗粒倒入烘箱,在100度的温度下烘干90分钟;Pour the surface layer raw material particles into the oven and dry at 100 degrees for 90 minutes;
4、片材挤出:4. Sheet extrusion:
将烘干后的中间层原材料颗粒和表层原料颗粒分别通过输料筒喂入两台挤出机,再经同一口模挤出三层复合片材。设定中间层片材挤出机各段温度为195-250度,设定表层片材挤出机温度为200-250度,挤出机上、中、下三辊的温度为50~65度。得到的片材厚度为0.5mm。The dried middle layer raw material granules and surface layer raw material granules are respectively fed to two extruders through the feeding cylinder, and then extruded three-layer composite sheet through the same die. Set the temperature of each section of the middle layer sheet extruder to 195-250 degrees, set the temperature of the surface layer sheet extruder to 200-250 degrees, and set the temperature of the upper, middle and lower three rolls of the extruder to 50-65 degrees. The resulting sheet had a thickness of 0.5 mm.
实施例2-8Example 2-8
中间层原材料组份及表层原材料组份、及各参数见实施例列表,其余同实施例1。The raw material components of the middle layer, the raw material components of the surface layer, and the parameters are shown in the list of examples, and the rest are the same as in Example 1.
表1:实施例列表Table 1: List of Examples
表2:性能对照表Table 2: Performance comparison table
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CN109421287A (en) * | 2017-08-22 | 2019-03-05 | 毛丛敏 | A kind of production method for the PC sheet material of matt after thermoforming |
CN110406066A (en) * | 2018-04-26 | 2019-11-05 | 俊驰材料科技股份有限公司 | Carrier tape and its manufacturing method |
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