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KR930701281A - Direct forming process - Google Patents

Direct forming process

Info

Publication number
KR930701281A
KR930701281A KR1019930700570A KR930700570A KR930701281A KR 930701281 A KR930701281 A KR 930701281A KR 1019930700570 A KR1019930700570 A KR 1019930700570A KR 930700570 A KR930700570 A KR 930700570A KR 930701281 A KR930701281 A KR 930701281A
Authority
KR
South Korea
Prior art keywords
resin
melt
particles
shaft
shear
Prior art date
Application number
KR1019930700570A
Other languages
Korean (ko)
Inventor
폴비오 우게리
피에르 루시오 아넬리
마르셀라 무루
마리오 비르투아니
Original Assignee
다이아나 브라코
브라코 에스. 피. 에이.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/655,485 external-priority patent/US5130076A/en
Application filed by 다이아나 브라코, 브라코 에스. 피. 에이. filed Critical 다이아나 브라코
Publication of KR930701281A publication Critical patent/KR930701281A/en

Links

Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • B29C45/60—Screws
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B29B7/428—Parts or accessories, e.g. casings, feeding or discharging means
    • B29B7/429—Screws
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/56—Screws having grooves or cavities other than the thread or the channel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

본 발명은 사출 성형기로서 성형기 속에 분산부(18)을 갖는 축(12)를 사용함으로써 다량의 열가소성 수지를, 예비혼련과 함께 용융 성형 가공하는데 관한 것이다. 소량의 수지 성분은 엘라스토머일 수 있고, 이것을 다량의 수지 성분을 강화시킨다. 이 효과는 사출 성형기(2)에 사용된 축(18)에 인가되는 배압을 증가시킴으로써 향상되어, 축 회전을 연장시키고, 이로써 분산부(18)에 의해 수행되는 전단 시간을 연장시킨다.The present invention relates to melt molding processing of a large amount of thermoplastic resin together with pre-kneading by using the shaft 12 having the dispersing portion 18 in the molding machine as an injection molding machine. The small amount of resin component may be an elastomer, which strengthens the large amount of resin component. This effect is enhanced by increasing the back pressure applied to the shaft 18 used in the injection molding machine 2, thereby extending the shaft rotation, thereby extending the shear time performed by the dispersion 18.

Description

직접 성형 가공법Direct forming process

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 축이 수축된 위치로 나타나 있는 태양인, 본 발명의 방법을 수행하기에 유용한 사출 성형기의 개략적인 측단면도이다.1 is a schematic side cross-sectional view of an injection molding machine useful for carrying out the method of the present invention, an aspect in which the axis is shown in a retracted position.

제2도는 램(ram)화 또는 전방 위치에 축이 있는 제1도의 사출 성형기를 나타낸다.FIG. 2 shows the injection molding machine of FIG. 1 with a shaft in ram or forward position.

제3도는 본 발명의 방법을 수행하는데 유용한 제1 및 제2도에 나타낸 축 태양의 확대된 부정(不定)길이의 측면도이다.3 is a side view of an enlarged indeterminate length of the axis aspect shown in FIGS. 1 and 2 useful for carrying out the method of the present invention.

Claims (11)

a) 제1열가소성 수지의 입자들을 이와 불상용성인 제2 열가소성 수지의 입자들과 배합하고 (여기서, 불상용성이란 제1수지와 제2수지의 용해도값차가 2(J/㎠)1/2이상이며, 상기 입자들은 적어도 1개의 크기가 2㎜ 이상이며, 상기 제1수지는 다량 부분으로 존재하고, 상기 제2수지는 소량 부분으로 존재하는 것을 특징으로 함). b) 상기 입자들의 배합물을 함께 혼합하면서 용융시키고, c) 생성된 용융물을 그 속의 수지를 열화시키지 않고 주기적으로 전단시켜 제1수지의 용융물 내에서 제2수지의 용융물을 분산시키고(여기서, 주기적인 전단 단계의 전단 속도 및 전단 시간은 생성된 용융물로부터 성형 가공된 제품에서 약 1μ미만의 제2수지의 수평균 이자 크기를 생성하기에 효과적임), d)생성된 소정 양의 전단 용융물을 소정의 형태로 주기적으로 압입시켜 그 결과로서 상기 배합된 입자들로부터 직접 성형 가공된 상기 소정 형태의 상기 제품을 얻는 것으로 이루어지는, 불상용성 수지로부터 직접 제품을 성형 가공하는 방법.a) The particles of the first thermoplastic resin are blended with the particles of the second thermoplastic resin which is incompatible therewith (wherein the incompatibility means that the difference in solubility between the first resin and the second resin is 2 (J / cm 2) 1/2 or more). And at least one particle of 2 mm or more in size, wherein the first resin is present in a large portion, and the second resin is present in a small amount). b) melt the blend of particles together, c) melt the resulting melt periodically without degrading the resin therein to disperse the melt of the second resin in the melt of the first resin (where Shear rate and shear time of the shearing step are effective to produce a number average interest size of less than about 1 micron of the second resin in the molded article from the resulting melt), d) the desired amount of shear melt A method of molding a product directly from an incompatible resin, which comprises periodically indenting it into a form to thereby obtain the product of the desired form which is molded directly from the blended particles. 제1항에 있어서, 주기적인 전단 단계와 주기적인 압입 단계를 서로 교호시켜 사출 성형 또는 사출 성형을 수행하는 방법.2. The method of claim 1 wherein injection molding or injection molding is performed by alternating the periodic shearing step and the periodic indentation step with each other. 제1항에 있어서, 주기적인 전단 단계와 주기적인 압입 단계를 서로 동시에 수행하여 압출 취입 성형 또는 2단계 사출 성형을 수행하는 방법.The method of claim 1, wherein the periodic shearing step and the periodic indentation step are performed simultaneously with each other to perform extrusion blow molding or two-stage injection molding. a)제1열가소성 수지의 입자들을 성형기에 주입하고, b)제1수지의 원료를 상기 성형기에 주입함과 동시에 제1수지와 불상용성인 상기 제2 열가소성 수지의 원료 입자들을 상기 성형기에 주입하고(여기서, 불상용성이란 제1수지와 제2수지의 용해도값차가 2(J/㎤)1/2이상이며, 상기 입자들은 적어도 1개의 크기가 2mm 이상이며, 상기 제1수지는 다량 부분으로 존재하고, 상기 제2수지는 소량 부분으로 존재하는 것을 특징으로 함). c)생성된 입자들의 배합물을 상기 성형기내에서 혼합하면서 용융시키고, d)생성된 용융을 상기 성형기 내에서 전단시켜 제2수지의 용융물을 제1수지의 용융물속으로 분산 시키고(여기서, 용융 단계 및 전단 단계는 성형기에 주입되는 수지 원료에 대해 조작되는 배럴 내에서 가소화 축의 주기적인 회전에 의해 수행됨), e) (Ⅰ)상기 축을 회전시켜 생성된 소정 양의 전단 용융물을 소정의 형태로 압입시키거나(여기서, 상기 축의 회전 동안 생성된 용융물의 전단의 양은 제1수지내에 제2수지를 미세하게 분산시키기에 효과적임), 또는 (Ⅱ) 배럴 내에서 축이 수축하는 동안 발생되는 상기 축의 회전에 대해 전단된 용융 수지로 배럴의 전단부가 충진되고, (ⅰ) 상기 제1수지와 제2수지를 열화시키지 않고서 전단 시간을 연장시키기 위하여 배럴내에서 축의 수축을 지연시키고(여기서, 전단 및 연장된 전단 시간은 제1수지내에 제2수지를 미세하게 분산시키기에 효과적임). (ⅱ) 배럴의 전단부를 충진시키는 전단된 용융물에 대해 가소화 축을 램(ram)화하여 용융물을 성형기의 주형 속으로 사출시키고(여기서, 축의 주기적 회전에 의해 제공된 미세 분산은 전단된 용융물로부터 성형 가공된 제품에서 약1μ미만의 제2수지의 수평균 입자 크기를 생성하는 것을 특지으로 함), f)그 결과로서 직접 성형 가공된 제품을 얻는 것으로 이루어지는, 불상용성 열가소성 수지로부터 직접 제품을 성형 가공하는 방법.a) injecting the particles of the first thermoplastic resin into the molding machine; b) injecting the raw material of the first resin into the molding machine and simultaneously injecting the raw material particles of the second thermoplastic resin incompatible with the first resin into the molding machine; Here, the incompatibility means that the difference between the solubility value of the first resin and the second resin is 2 (J / cm 3) 1/2 or more, the particles have at least one size of 2 mm or more, and the first resin is present in a large portion. , The second resin is present in a small amount portion). c) melt the blend of resulting particles in the molding machine while mixing; d) shear the produced melt in the molding machine to disperse the melt of the second resin into the melt of the first resin (wherein the melting step and The shearing step is carried out by periodic rotation of the plasticizing axis in a barrel operated on the resin raw material injected into the molding machine), e) (I) a predetermined amount of shear melt produced by rotating the shaft is pressed into a predetermined shape. (Wherein the amount of shearing of the melt produced during the rotation of the shaft is effective to finely disperse the second resin in the first resin), or (II) the rotation of the shaft that occurs during the contraction of the shaft in the barrel. The front end of the barrel is filled with molten resin sheared with respect to (i) shrinkage of the shaft in the barrel to extend the shear time without degrading the first and second resins. (Where shear and extended shear times are effective to finely disperse the second resin in the first resin). (Ii) ram the plasticization axis for the sheared melt filling the front end of the barrel to inject the melt into the mold of the molding machine, where the fine dispersion provided by the periodic rotation of the shaft is formed from the sheared melt To produce a number average particle size of the second resin of less than about 1 micron in the finished product), f) molding the product directly from an incompatible thermoplastic, which results in obtaining a directly molded product. Way. 제4항에 있어서, 축의 수축이 상기 축에 1.5Mpa 이상의 배압을 가함으로써 지연되는 방법.5. The method of claim 4 wherein the contraction of the shaft is delayed by applying a back pressure of at least 1.5 Mpa to the shaft. a)폴리에스테르 및 폴리아미드 수지로 이루어지는 군으로부터 선택된 제1열가소성 수지의 입자들을, 엘라스토머이고 상기 제1수지와 불상용성인 제2열가소성 수지의 입자들과 배합하고 (여기서, 상기 입자들은 적어도 1개의 크기가 2mm이상이며, 상기 제1수지는 다량 부분으로 존재하고, 상기 제2수지는 소량 부분으로 존재하는 것을 특징으로 함), b) 상기 입자들의 배합물을 함께 혼합시키면서 용융시키고, c)생성된 용융물을 그 속의 수지를 열화시키지 않고 주기적으로 전단시켜 제1수지의 용융물 내에서 제2수지의 용융물을 분산시키고 (여기서, 주기적인 전단 단계의 전단 속도 및 전단 시간은 생성된 용융물로부터 성형 가공된 제품에서 약 1μ미만의 제2수지의 수평균 입자 크기를 생성하기에 효과적임), d)생성된 소정 양의 전단 용융물을 소정의 형태로 주기적으로 압입시켜, 그 결과로서 상기 배합된 입자들로부터 직접 성형 가공된 상기 소정 형태의 상기 제품을 얻는 것으로 이루어지는, 불상용성 수지로부터 직접 제품을 성형 가공하는 방법.a) particles of a first thermoplastic resin selected from the group consisting of polyester and polyamide resin are combined with particles of a second thermoplastic resin which is an elastomer and incompatible with said first resin, wherein said particles are at least one size Is 2 mm or more, the first resin is present in a large amount portion, and the second resin is present in a small amount portion), b) is melted while mixing the blend of the particles together, c) the resulting melt Is periodically sheared without degrading the resin therein to disperse the melt of the second resin in the melt of the first resin, where the shear rate and shear time of the periodic shearing step is Effective to produce a number average particle size of the second resin of less than about 1 μ), d) the desired amount of shear melt produced To periodically press fitting, the method for processing the molding, the product directly from the Buddha soluble resin made by obtaining the machined directly molded from the compounded particles wherein the predetermined shape of the product as a result. 제6항에 있어서, 엘라스토머가 엘틸렌 공중합체, 스티렌 공중합체 및 블록코폴리에테르에스테르로 이루어지는 군 중에서 선택되는 방법.7. The method of claim 6, wherein the elastomer is selected from the group consisting of elylene copolymers, styrene copolymers and blockcopolyetheresters. 제6항에 있어서, 수지가 재생 폴리에스테르 수지 플레이크인 방법.The method of claim 6 wherein the resin is a recycled polyester resin flake. 제8항에 있어서, 상기 플레이크와 상기 엘라스토머의 비율이 각각 80내지 90중량% 및 10내지 20중량%인 방법.The method of claim 8, wherein the ratio of the flakes and the elastomer is 80 to 90% by weight and 10 to 20% by weight, respectively. 열가소성 수지 입자용 주입 개구 및 배출 단부를 갖는 가열된 원통형 체임버내에서 그의 종방향 축 둘레를 회전하기 위한 압출 축용 분산 헤드로서, 상기 축은 상기 체임버를 따라 상기 수지 입자들을 진행시키기 위한 나선형지지 플라이트(bearing flight)수단 및 이러한 진행 도중 상기 수지 입자들을 압축시키기 위한 상기 길이의 적어도 일부를 따라 용적이 감소되는 상기 나선형 플라이트 수단들 사이의 채널 수단을 가짐으로써, 상기 배출 단부 쪽으로 상기 체임버를 따라 진행하는 동안 상기 열가소성 수지 입자들을 연화 및 용융시키며, 상기 분산 헤드는 상기 축의 연속부(連續部)를 형성하기에 적합하고, 상기 축의 종방향을 따라 서로 떨어져있는 용융 수지를 수용하기 위한 복수개의 전단부로 이루어지며, 상기의 각 전단부는 a)상기 축으로부터 신장되어 있는 복수개의지지 플라이트, b)상기 축의 상기지지 플라이트로부터 신장되어 있고 상기 축을 따라 나선형으로 신장되어 있으며, 상기 체임버의 벽과 상기 배리어 플라이트 사이에 조그만 틈을 형성하기 위하여 상기지지 플라이트의 직경보다 더 작은 직경을 갖는 복수개의 배리어 플라이트(barrier flight)(여기서, 상기지지 플라이트와 배리어 플라이트는 서로 교대로 끼워져 있어 상기 축을 따라 나선형으로 신장되어 있고 유입단부와 배출 단부를 갖고 있는 복수개의 채널을 형성함). c)나머지 모든 채널의 유입 단부를 폐쇄시켜 그의 유입 단부를 통한 상기 용융 수지의 유입을 방지하기 위한 수단 및 d)나머지 채널의 배출 단부를 폐쇄시켜 그의 배출 단부로부터 용융 수지의 배출을 방지하기 위한 수단(여기서, 상기 채널을 각각 복수개의 배출 채널과 유입 채널을 형성하고, 상기지지 플라이트와 상기 배리어 플라이트는 상기 축의 회전 방향에 대해 각 상기 유입 채널의 전(前)플라이트와 ( )플라이트를 형성하며, 유입 채널의 배출 단부를 밀폐시키면 유입 채널로부터 용융된 수지 중합체를 압입시켜 상기 배리어 플라이트와 상기 벽 사이의 조그만 틈을 통과시키는 효과가 있고, 상기 틈은 열가소성 수지가 이를 통과할 동안 전단을 일으키기에 충분히 작으며, 상기 각 전단부 사이의 공간을 상기 축에 의해 더 진행되기 전에 각각의 선행 전단부의 배출 채널로부터 배출되는 용융 수지를 함께 혼합시키며, 이로써 상기 채임버의 배출 단부에는 철저하게 가소화된 열가소성 수지가 제공됨)으로 이루어지는 분산 헤드.A dispersing head for an extrusion shaft for rotating about its longitudinal axis in a heated cylindrical chamber having an injection opening and a discharging end for thermoplastic resin particles, the shaft supporting a spiral support flight for advancing the resin particles along the chamber. flight means and channel means between the helical flight means, the volume of which is reduced along at least a portion of the length for compressing the resin particles during this process, so as to proceed along the chamber toward the discharge end. Softens and melts the thermoplastic resin particles, the dispersing head being adapted to form a continuous portion of the shaft, and consisting of a plurality of shear sections for receiving molten resin spaced apart from each other along the longitudinal direction of the shaft, Each of the front end portions a) extends from the shaft A plurality of support flights, b) extending from the support flight of the axis and extending spirally along the axis, the diameter of the support flight being larger than the diameter of the support flight to form a small gap between the wall of the chamber and the barrier flight. A plurality of barrier flights having a small diameter, wherein the support flights and the barrier flights are alternately fitted to each other to form a plurality of channels extending spirally along the axis and having inlet and outlet ends . c) means for closing the inlet end of all the remaining channels to prevent the inflow of the molten resin through its inlet end, and d) means for closing the outlet end of the remaining channels to prevent discharge of the molten resin from its outlet end. Wherein each of the channels forms a plurality of discharge channels and an inlet channel, wherein the support flight and the barrier flight form a preflight and a) flight of each of the inflow channels with respect to the rotational direction of the axis, Closing the outlet end of the inlet channel has the effect of indenting the molten resin polymer from the inlet channel to pass a small gap between the barrier flight and the wall, which is sufficient to cause shear while the thermoplastic passes therethrough. Small, each line before the space between each front end advances further by the axis Dispersing the molten resin discharged from the discharge channel of the row front end, whereby the discharge end of the chamber is provided with a thoroughly plasticized thermoplastic resin. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930700570A 1990-08-27 1991-08-15 Direct forming process KR930701281A (en)

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US57554590A 1990-08-27 1990-08-27
US57554790A 1990-08-27 1990-08-27
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US62358190A 1990-12-07 1990-12-07
US623,581 1990-12-07
US07/655,485 US5130076A (en) 1990-08-27 1991-02-14 Direct fabrication
US655,485 1991-02-14
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