KR19990042050A - Manufacturing method of plastic film - Google Patents
Manufacturing method of plastic film Download PDFInfo
- Publication number
- KR19990042050A KR19990042050A KR1019970062752A KR19970062752A KR19990042050A KR 19990042050 A KR19990042050 A KR 19990042050A KR 1019970062752 A KR1019970062752 A KR 1019970062752A KR 19970062752 A KR19970062752 A KR 19970062752A KR 19990042050 A KR19990042050 A KR 19990042050A
- Authority
- KR
- South Korea
- Prior art keywords
- plastic film
- sheet
- plastic
- stretching
- roll
- Prior art date
Links
- 239000002985 plastic film Substances 0.000 title claims abstract description 23
- 229920006255 plastic film Polymers 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 6
- 239000004033 plastic Substances 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims abstract description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 229920001871 amorphous plastic Polymers 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 6
- 235000013399 edible fruits Nutrition 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007573 shrinkage measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
본 발명의 플라스틱 필름의 제조방법은 플라스틱 칩을 300℃이상의 고온에서 용융압출한 후 내부에서 냉각수가 순환되고 있는 캐스팅 드럼을 사용하여 상온으로 냉각시켜서 무정형의 플라스틱 시트를 제조한 후, 상하 또는 횡으로 배치된 전자유도 가열방식으로 가열되는 연신롤을 사용하여 시트의 진행방향으로 3~5배 연신하고, 이렇게 연신된 시트를 텐터에서 횡 또는 상하 연신하여 균일한 두께의 플라스틱 필름을 제조할 수 있다.In the method of manufacturing a plastic film of the present invention, after melting and extruding a plastic chip at a high temperature of 300 ° C. or higher, a cooling drum is circulated therein to cool it to room temperature to prepare an amorphous plastic sheet, and then vertically or horizontally. By using the stretching roll heated by the electromagnetic induction heating method arranged in the stretching direction of the sheet 3 to 5 times, the stretched sheet can be stretched laterally or vertically in a tenter to produce a plastic film having a uniform thickness.
Description
본 발명은 플라스틱 필름의 제조방법에 관한 것으로, 구체적으로는 필름의 품질이 우수하고, 에너지 효율이 높은 플라스틱 필름의 제조방법에 관한 것이다.The present invention relates to a method for producing a plastic film, and more particularly, to a method for producing a plastic film having excellent film quality and high energy efficiency.
플라스틱 필름은 우수한 기계적, 물리적, 화학적 성질을 가지고 있어서 여러분야에 광범위하게 사용되고 있다. 특히 플라스틱 필름의 산업상의 이용예는 각종 포장재료, 사진재료, 전기재료, 비디오/오디오테이프, 각종 접착 테이프 외에도 농업용 및 섬유용 용도에서도 널리 쓰이고 있다. 최근에는 그래픽용 소재 및 각종 후가공용 소재로 쓰이는 경우도 있다.Plastic films have a wide range of properties because of their excellent mechanical, physical and chemical properties. In particular, the industrial use of the plastic film is widely used in agricultural and textile applications in addition to various packaging materials, photographic materials, electrical materials, video / audio tapes, various adhesive tapes. Recently, it is sometimes used as a graphic material and various post-processing materials.
플라스틱 필름은 플라스틱 칩의 용융 압출 후에 이축연신을 하여 얻어진다. 예를들어 폴리에스테르 칩을 300℃ 이상의 고온에서 압출한 후 내부에서 냉각수가 순환되고 있는 캐스팅 드럼을 사용하여 상온으로 냉각시켜 무정형의 시트를 제조한 후에 이를 상하 또는 횡으로 배치된 롤을 사용하여 시트의 이동방향과 동일한 방향으로 3배 이상 연신시킨 후, 이와 같이 연신된 시트를 열풍으로 예열할 수 있는 텐터내에서 시트의 진행방향과 수직으로 3배 이상 연신시켜 이축연신 폴리에스테르 필름을 제조하게 되는 바, 이때 상하 또는 횡으로 배치된 롤에 플라스틱 칩의 전이온도 이상으로 가열하여 무정형의 시트를 종방향으로 3배 이상 연신시키는데 롤의 가열방법으로는 도1, 도2, 도3에 나타낸 바와 같이 온수를 사용하는 가압온수법, 열매를 사용하는 열매가열법, 증기를 사용하는 증기가열법 등이 있다.The plastic film is obtained by biaxial stretching after melt extrusion of the plastic chip. For example, a polyester chip is extruded at a high temperature of 300 ° C. or higher, and then cooled to room temperature using a casting drum in which cooling water is circulated therein to produce an amorphous sheet, which is then rolled using a roll placed vertically or horizontally. After stretching three times or more in the same direction as the moving direction of the sheet, the stretched sheet is stretched three times or more perpendicularly to the traveling direction of the sheet in a tenter capable of preheating the hot air to produce a biaxially stretched polyester film. At this time, by heating above the transition temperature of the plastic chip on the roll disposed vertically or horizontally, the amorphous sheet is stretched three times or more in the longitudinal direction. As a method of heating the roll, as shown in FIGS. 1, 2 and 3 Pressurized hot water method using hot water, fruit heating method using fruit, steam heating method using steam, and the like.
그러나 상기와 같이 롤을 가열하는 방법에 있어서 열매를 가열하는 방법 및 증기를 가열하는 방법은 롤의 외기 온도에 따라 롤의 표면온도의 분포가 달라져 가열되는 필름시트의 온도 또한 불균일하게 되어 연신의 정도가 달라지므로 필름의 두께의 편차가 생기고, 또한 조업중 상대적으로 얇은 부분이 과연신으로 파단이 발생하여 조업성을 저하시키는 등의 문제가 발생하여 생산성에 큰 악영향을 끼치게 된다.However, in the method of heating the roll as described above, the method of heating the fruit and the method of heating the steam, the surface temperature of the roll changes according to the outside temperature of the roll, the temperature of the film sheet to be heated is also uneven, the degree of stretching Since the variation of the thickness of the film is caused, and the relatively thin portion during the operation is broken by over-stretching, such as the problem of deterioration of the operability occurs, which greatly affects the productivity.
본 발명자들은 상기 문제점들을 해결하고자 노력한 결과 롤의 가열방법을 개선함으로써 열효율이 높으며, 우수한 품질을 갖는 플라스틱 필름을 제조할 수 있음을 알게되어 본 발명을 완성하게 되었다.The present inventors have completed the present invention by discovering that a plastic film having high thermal efficiency and excellent quality can be manufactured by improving the heating method of the roll as a result of trying to solve the above problems.
본 발명의 목적은 전자유도방식에 의한 연신롤 가열장치를 이용하는 플라스틱 필름의 제조방법을 제공하는데 있다.An object of the present invention is to provide a method for producing a plastic film using a stretch roll heating apparatus by an electron induction method.
도1은 연신롤의 가열방식이 가압온수법,1 is a heating method of the stretching roll is pressurized hot water method,
도2는 연신롤의 가열방식이 열매가열법,2 is a heating method of the heating roll of the stretching roll,
도3은 연신롤의 가열방식이 증기가열법,3 is a heating method of the stretching roll steam heating method,
도4는 연신롤의 가열방식이 본 발명의 전자유도방식인 것을 나타낸다.Figure 4 shows that the heating method of the stretching roll is the electron induction method of the present invention.
본 발명은 플라스틱 필름의 제조방법에 관한 것이다.The present invention relates to a method for producing a plastic film.
구체적으로 본 발명은 플라스틱 칩의 용융 압출 후에 이축연신을 행하는 플라스틱 필름의 제조방법에 있어서, 플라스틱 필름의 진행방향으로 연신할 때 사용되는 연신롤의 가열방식이 전자유도 방식인 플라스틱 필름의 제조방법에 관한 것이다.Specifically, the present invention relates to a method for producing a plastic film which is biaxially stretched after melt extrusion of a plastic chip, the method for producing a plastic film in which the heating method of the stretching roll used when stretching in the advancing direction of the plastic film is an electromagnetic induction method. It is about.
본 발명의 플라스틱 필름은 폴리에스테르 필름 또는 나일론 필름이다.The plastic film of the present invention is a polyester film or a nylon film.
이를 보다 구체적으로 설명하면 다음과 같다.This will be described in more detail as follows.
본 발명의 플라스틱 필름의 제조방법은 플라스틱 칩을 300℃이상의 고온에서 용융압출한 후 내분에서 냉각수가 순환되고 있는 캐스팅 드럼을 사용하여 상온으로 냉각시켜서 무정형의 플라스틱 시트를 제조한 후, 도4에 나타낸 바와 같이 상하 또는 횡으로 배치된 전자유도 가열방식으로 가열되는 연신롤을 사용하여 시트의 진행방향으로 3~5배 연신하고, 이렇게 연신된 시트를 텐터에서 횡 또는 상하 연신하여 균일한 두께의 플라스틱 필름을 제조할 수 있다.In the method of manufacturing a plastic film of the present invention, after melting and extruding a plastic chip at a high temperature of 300 ° C. or more, the resultant is cooled to room temperature using a casting drum in which cooling water is circulated in the internal powder to prepare an amorphous plastic sheet, and is shown in FIG. 4. As described above, using a stretching roll heated by an electromagnetic induction heating method arranged vertically or horizontally, the sheet is stretched 3 to 5 times in the sheet traveling direction, and the stretched sheet is stretched laterally or vertically in a tenter to produce a plastic film having a uniform thickness. Can be prepared.
본 발명의 전자유도 방식의 연신롤은 내부에 전자유도 히터를 가지고 있으며, 이는 온도센서에 의해서 가장 적합한 온도로 조작하는 것이 가능하다.The stretching roll of the electromagnetic induction method of the present invention has an electromagnetic induction heater therein, which can be operated at a temperature most suitable by a temperature sensor.
이하에서 실시예 및 비교예로서 본 발명을 더욱 상세히 설명하나 본 발명이 이에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with examples and comparative examples, but the present invention is not limited thereto.
실시예 1Example 1
폴리에스테르 칩을 300℃이상의 고온에서 용융압출한 후 내분에서 냉각수가 순환되고 있는 캐스팅 드럼을 사용하여 상온으로 냉각시켜서 무정형의 폴리에스테르 시트를 제조한 후, 도4에 나타낸 바와 같이 상하로 배치된 전자유도 가열방식으로 가열되는 연신롤을 사용하여 시트의 진행방향으로 4배 연신하고, 이렇게 연신된 시트를 텐터에서 횡연신하여 100㎛ 두께의 플라스틱 필름을 제조하였다. 그 결과를 표1에 나타내었다.After the polyester chip was melt-extruded at a high temperature of 300 ° C. or higher and cooled to room temperature using a casting drum in which cooling water was circulated in the internal powder, an amorphous polyester sheet was produced, and then the electrons disposed up and down as shown in FIG. 4. A stretching roll heated by an induction heating method was used to draw four times in the direction of progress of the sheet, and the stretched sheet was laterally stretched in a tenter to prepare a plastic film having a thickness of 100 μm. The results are shown in Table 1.
비교예 1Comparative Example 1
실시예 1의 무정형의 폴리에스테르 시트를 제조한 후 열매 가열방식의 연신롤을 사용하여 시트 진행방향으로 4배 종연신시킨 후, 텐터에서 횡연신하여 100㎛ 두께의 필름을 제조하였다. 그 결과는 표1에 나타내었다.After preparing the amorphous polyester sheet of Example 1, using a heating roll stretching roll 4 times longitudinal stretching in the sheet traveling direction, and laterally stretched in a tenter to prepare a 100㎛ thick film. The results are shown in Table 1.
평가방법Assessment Methods
1. 열수축 측정1. Heat Shrinkage Measurement
필름을 양쪽 변부 2부분과 중앙 부분을 가로 30cm×세로 30cm로 짤라 3개의 시료를 만든 후, 각각의 시료를 2장씩 포개어 ONO SOKKI사 ST-022제품으로 두께를 측정하고, 그 값을 (중앙부분 시료의 값 - 변부 부분 시료의 값)로 계산하여 그 값을 표1에 나타내었다.Cut the film into 2 parts on both sides and the center part by 30cm x 30cm in length to make three samples, and then superimpose each of the two samples and measure the thickness with the product of ONO SOKKI's ST-022. The value of the sample-the value of the edge part sample) is shown in Table 1.
2. 두께 균일성 측정2. Thickness uniformity measurement
필름을 양쪽 변부 2부분과 중앙 부분을 가로 30cm×세로 30cm로 짤라 3개의 시료를 만든 후, 각각의 시료를 2장씩 포개어 ONO SOKKI사 ST-022제품으로 두께를 측정하고, 그 값을 (중앙부분 시료의 값 - 변부 부분 시료의 값)로 계산하여 그 값을 표1에 나타내었다.Cut the film into 2 parts on both sides and the center part by 30cm x 30cm in length to make three samples, and then superimpose each of the two samples and measure the thickness with the product of ONO SOKKI's ST-022. The value of the sample-the value of the edge part sample) is shown in Table 1.
3. 강신도 측정3. Elongation Measurement
파열시 스트레스(인장실험시 시료가 파열될 때의 스트레스), 인장률(시료가 파열될 때까지 늘어난 정도), F-5 값(신도 5%에서의 인장 강도)은 만능재료 시험기를 사용하여 ASTMD882-91을 기준으로 측정하였다. 시료는 하기와 같은 규격으로 취하되, 중앙부분과 변부부분으로 나누어 3개씩 취하였다. 상세조건은 하기와 같다.Stress at rupture (stress when sample ruptured during tensile testing), tensile rate (extended until sample ruptured), and F-5 values (tensile strength at 5% elongation) were measured using a universal testing machine. Measured based on 91. Samples were taken as follows, but divided into three parts, the central part and the edge part. Detailed conditions are as follows.
상기와 같이 하여 얻은 값을 (중앙부분 시료의 값 - 변부부분 시료의 값)로 계산하여 그 값을 표 1에 나타내었다.The value obtained as described above was calculated as (the value of the central part sample-the value of the edge part sample), and the value is shown in Table 1.
4. 조업성4. Operability
5일 동안 제막중 파단회수를 나타내었다.The number of breaks during film formation was shown for 5 days.
본 발명의 플라스틱 필름의 제조방법인 전자유도 방식으로 연신롤을 가열하는 방법은 상기 실험결과에서 알 수 있는 바와 같이 종래의 가압온수법, 열매가열법, 증기가열법 등에 비해 높은 제조 조업성과 균일한 두께와 물성을 가지며, 에너지효율이 높다.The method of heating the stretching roll by the electron induction method, which is a method of manufacturing the plastic film of the present invention, has high manufacturing operation and uniformity as compared with the conventional pressurized hot water method, fruit heating method, steam heating method, etc. It has thickness and physical properties and high energy efficiency.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970062752A KR19990042050A (en) | 1997-11-25 | 1997-11-25 | Manufacturing method of plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970062752A KR19990042050A (en) | 1997-11-25 | 1997-11-25 | Manufacturing method of plastic film |
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| Publication Number | Publication Date |
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| KR19990042050A true KR19990042050A (en) | 1999-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| KR1019970062752A KR19990042050A (en) | 1997-11-25 | 1997-11-25 | Manufacturing method of plastic film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863058B1 (en) * | 2005-03-27 | 2008-10-10 | 후타마키 포르시하임 츠바익니덜라쑹 데어 후타마키 도이치란트 게엠베하 & 코.카게 | Process for the production of an oriented plastic film |
-
1997
- 1997-11-25 KR KR1019970062752A patent/KR19990042050A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100863058B1 (en) * | 2005-03-27 | 2008-10-10 | 후타마키 포르시하임 츠바익니덜라쑹 데어 후타마키 도이치란트 게엠베하 & 코.카게 | Process for the production of an oriented plastic film |
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