KR900003824B1 - 복합판 또는 적층판의 제조방법 - Google Patents
복합판 또는 적층판의 제조방법 Download PDFInfo
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- KR900003824B1 KR900003824B1 KR1019860009407A KR860009407A KR900003824B1 KR 900003824 B1 KR900003824 B1 KR 900003824B1 KR 1019860009407 A KR1019860009407 A KR 1019860009407A KR 860009407 A KR860009407 A KR 860009407A KR 900003824 B1 KR900003824 B1 KR 900003824B1
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- Prior art keywords
- acrylic glass
- abs
- melt flow
- support
- flow index
- Prior art date
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- 238000000034 method Methods 0.000 title abstract description 7
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 22
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims abstract description 5
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000007496 glass forming Methods 0.000 claims abstract description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims abstract 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract 2
- 239000000155 melt Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 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
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- B29C48/08—Flat, e.g. panels flexible, e.g. films
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- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0605—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two belts, e.g. Hazelett-process
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- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0685—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting belts
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- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
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- H—ELECTRICITY
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- H01M50/342—Non-re-sealable arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
내용 없음.
Description
제 1 도는 본 발명에 따른 방법을 수행하기 위한 장치의 개략도.
제 2 도는 사용되는 아크릴유리의 멜트 플로우 인덱스에 따른 욕조의 내구성을 나타내는 선도.
본 발명은 디이프-드로오잉(deep-drawing)에 의하여 욕조 인레이(bath tub inlays)의 제조에 적당한 복합판 또는 적층간의 제조방법에 관한 것으로, 아크릴 니트릴-부타디엔-스티렌(ABS)의 지지체 및 폴리메틸 메다크릴레이트(PMMA, 아크릴 유리)의 피막이 시이트 다이를 통하여 동시 압출된다.
현재까지 알려진 그와같은 방법에 있어서는, 결합시키고자 하는 재료를 먼저 압출시킨다음 어댑터에서 모아서 결합시키고, 그다음 시이트 다이를 통해서만 함께 압출시켰다. 이 방법은 결합시키고자하는 재료가 일정한 온도에서 유사한 점성을 갖는한 어려움이 없다. 이는 예컨대 DIN 53735에 따라 측정하여 멜트 플로우 인믹스(melt flow index)(MFI 230℃/3.8)가 약 6의 값을 가질때 ABS/아크릴 유리에 대한 경우이다.
통상의 방법으로 제조된 판의 디이프-드로오잉에 의하여 생산된 욕조의 수명 연구결과 약 500회의 온-냉수 사이클후 털모양의 틈이 가시됨을 알았다. 이는 단지 적당한 요건에 대하여는 충분함을 의미하며, 욕조가 눈에 보이는 손상없이 받게되는 온 냉수 교대 충전수를 사실상 증가시키는 문제를 야기시켰다.
놀랍게도, 설정 목표에 도달하는 필수적인 선행조전은 비교적 낮은 멜트 플로우 인엑스를 갖는 아크릴 유리의 사용이라는 것을 알았다.
발견된 해결책은 ABS와 동시 압출에 적당한 아크릴 유리 형태가 심지어 멜트 플로우 인덱스(MFI)가 크게 상이한 때에도 그들의 공지 기계적 성질, 즉 만곡강도, 인장강도, 내충격성, 보올 압력 경도 및 긁기경도에 있어서 약간만 상이하다는 이유때문에 처음부터 명확하지 않았다.
따라서, 낮은 MFI를 갖는 아크릴 유리로 대체시켜 욕조의 수명을 개선시키고자하는 동기가 전혀 없었다. 더우기, 그와같은 시도는 통상의 방법에 의하여 낮은 멜트 플로우 인덱스의 아클릴 유리와 ABS의 동시 압출이 불가능하다는 두려움에 직면하게 되었다. 따라서, 필요한 시험을 수행할 수 있게 하기위하여, 관련 물질쌍을 동시 압출하기위한 방법이 먼저 고안되지 않으면 안되었으며, 이를 위하여, 결국 다중채널다이가 사용될 수 있음을 알았다. 놀랍게도, 수행된 시험은 멜트 플로우 인덱스를 약 2이하로 감소시키면 이들 적층판으로 부터 제조된 욕조의 수명의 갑작스러운 상승이 달성될 수 있음을 보여주었다. 따라서 본 발명은 피막을 형성하는 아크릴 유리가 DIN 53735에 따라 기껏해야 2.0의 멜트 플로우 인덱스(MFI)(230℃/3.8)를 가지며, 상기 아크릴 유리와 지지체를 형성하는 ABS를 그 폭이 사실상 시이트 다이의 폭에 해당하는 상이한 채널을 통하여 시이트 다이로 직접 안내하는 것을 문제의 해결책으로 하고 있다.
본 발명을 첨부도면에 의하여 보다 상세히 설명하면 다음과 같다.
제 1 도에 도시한 장치는 이른바 다중 채널형 다이장치이다. 이에 대한 대표적인 예로서는 적층판의 일층을 형성하고자하는 재료를 먼저 폭과 두께에 관하여 고정시키고 압출다이 채널의 인접대역에서만 그와같은 다른 층과 결합시키는 것이다. 이와반대로 통상적인 공정은 미리 다이 앞에서 상이한 플라스틱의 개개의 층을 함께 모아서 다이를 통하여 공동으로 압출시키는 것이다.
제 1 도에 따른 장치의 개략적으로 도시한 주요부품은 상측 다이 동체(3)와 하측 다이동체(4)는 물톤 시이트 다이의 상측 립(1)과 하측 립(2)이다 (이경우 다수의 분배기 채널이 배열되어있다). 도시된 경우에 있어서, 적층판은 네개의 층, 즉 덮개 층, 상측 중간충, 하측 중간층, 및 지지층으로 이루어지며, 이들 층은 이러한 순서로 분배기 채널(5,7,9 및 11)에서 형성된다.
층을 형성하는 재료는 연결부를 통하여 공급되어 다이동체의 내부에서 대략 적층판의 폭가지 안내되어 개별적으로 공급되는 재료 웨브의 폭에 걸쳐 연장되는 배압봉에 의하여 그의 두께에 관하여 결정된다. 분배기채널(5,7,9 및 11)은 배압봉(6,8,10 및 12)과 이러한 순서로 서로 관련되어있다.
본 발명의 주요점은 개개의 분배기 채널에서 생성되는 부분웨브가 오직 다이입구[이는 상측립(1)과 하측립(2)으로 구성되어 있다]에서 직접 모아진다는 특징으로서, 이 때문에 그들의 상이한 유동학적 거동은 악영향없이 유지된다.
욕조의 형성을 위해 적층판의 제조에 사용되는 개개 재료의 유동학적 거동의 차이점은 특히 ABS의 하나이상의 층을 기준하여 아크릴 유리(이는 비교적 낮은 멜트 플로우 인덱스를 갖는다)의 피막을 적용하고자 하는 경우 무시할 수 없다. 그와같은 재료의 접합을 위하여 넓고 두꺼운 패널의 형태로 동시압출은 층 구조가 중심의 외측벽, 즉 층이 모아진 직후 시이트 다이의 벽의 작용에 의하여 고착되기만 하면 합리적으로 가능하다. 다른 한편으로 낮은 멜트 플로우 인덱스의 아크릴 유리의 사용에 의하여 부여되는 이점은 제 2 도로부터 알 수 있다. 이 선도에서 종좌표는 제 1의 미세한 털 모양의 틈이 나타나기 전에 적절한 CEN 규격에 따른 욕조가 받을 수 있는 온수 및 냉수로의 충전 사이클의 수이다. 이와같은 시험에서, 욕조는 95℃의 온수와 12℃의 냉수로 교대로 충전되며, 시험 조건은 엄격하게 명기되어 있다.
제 2 도에 도시한 선도에서 놀라운 것은 주기적으로 교대하는 온-냉수 충전에 대한 욕조의 저항이 ABS지지체층에 적용되는 아크릴 유리 덮개층의 멜트 플로우 인덱스가 2이하로 내려갈때 현저히 증가한다는 점이며, 문제를 야기시키지 않고 여전히 가능한 제작에 대하여 최대치는 약 1이다. 멜트 플로우 인덱스는 표준 DIN 53735에 따라 측정되며, 이는 정해진 조건하에서 일정시간에 다이를 통하여 압착되는 시료의 질량을 나타낸다. 현재의 경우 멜트 플로우 인덱스(MFI 230℃/3.8)가 측정되었으며, 이는 시험장치의 온도가 230℃이고 시험재료가 3.80±0.02kg의 질량의 하중하에 있었음을 의미한다.
이미 언급한 바와같이, 멜트 플로우 인덱스에 대한 냉온수의 교대 충전에 대한 욕조의 저항의 강한 의존성은 재료의 통상의 기계적 특성이 그와같은 의존성을 나타내지 않는 한 놀라운 것이다.
Claims (2)
- 디이프-드로오잉예 의하여 욕조 인레이의 제조에 적당한 복합판 또는 적층판의 제조방법에 있어서, 아크릴 니트릴-부타디엔-스티렌(ABS)의 지지체와 폴리메틸 메타크릴레이트(PMMA, 아크릴 유리)의 직접 결합피막을 시이트 다이를 통하여 동시 압출시키되, 피막을 형성하는 아크릴 유리는 DIN 53735에 따라 기껏해야 2.0의 멜트 플로우 인덱스 MFI 230℃/3.8를 갖게하고, 아크릴 유리와 지지체를 형성하는 ABS는폭이 사실상 시이트다이의 폭에 해당하는 상이한 채널을 통하여 시이트다이로 직접 안내하는 것을 특징으로 하는 복합판 또는 적층판의 제조방법.
- 제 1 항에 있어서, 아크릴 유리의 멜트 플로우 인덱스가 약 1인것을 특징으로 하는 복합판 또는 적층판의 제조방법.
Applications Claiming Priority (2)
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ATA3315/85 | 1985-11-14 | ||
AT0331585A AT383991B (de) | 1985-11-14 | 1985-11-14 | Verfahren zur herstellung von verbundplatten |
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KR870004831A KR870004831A (ko) | 1987-06-01 |
KR900003824B1 true KR900003824B1 (ko) | 1990-05-31 |
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KR1019860009407A KR900003824B1 (ko) | 1985-11-14 | 1986-11-07 | 복합판 또는 적층판의 제조방법 |
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US (1) | US4731213A (ko) |
EP (1) | EP0225500B1 (ko) |
JP (1) | JPS62113527A (ko) |
KR (1) | KR900003824B1 (ko) |
CN (1) | CN1007500B (ko) |
AT (1) | AT383991B (ko) |
CA (1) | CA1277116C (ko) |
DE (1) | DE3671858D1 (ko) |
ES (1) | ES2016244B3 (ko) |
GR (1) | GR3000755T3 (ko) |
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- 1986-02-26 US US06/833,891 patent/US4731213A/en not_active Expired - Lifetime
- 1986-11-07 KR KR1019860009407A patent/KR900003824B1/ko not_active IP Right Cessation
- 1986-11-11 DE DE8686115626T patent/DE3671858D1/de not_active Expired - Lifetime
- 1986-11-11 ES ES86115626T patent/ES2016244B3/es not_active Expired - Lifetime
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Publication number | Publication date |
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DE3671858D1 (de) | 1990-07-19 |
AT383991B (de) | 1987-09-10 |
CA1277116C (en) | 1990-12-04 |
CN86107866A (zh) | 1987-05-20 |
ATA331585A (de) | 1987-02-15 |
KR870004831A (ko) | 1987-06-01 |
ES2016244B3 (es) | 1990-11-01 |
JPS62113527A (ja) | 1987-05-25 |
EP0225500A2 (de) | 1987-06-16 |
CN1007500B (zh) | 1990-04-11 |
EP0225500A3 (en) | 1988-08-03 |
JPH0257502B2 (ko) | 1990-12-05 |
US4731213A (en) | 1988-03-15 |
EP0225500B1 (de) | 1990-06-13 |
GR3000755T3 (en) | 1991-10-10 |
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