KR940009901B1 - Manufacturing method of embossing film - Google Patents
Manufacturing method of embossing film Download PDFInfo
- Publication number
- KR940009901B1 KR940009901B1 KR1019910024421A KR910024421A KR940009901B1 KR 940009901 B1 KR940009901 B1 KR 940009901B1 KR 1019910024421 A KR1019910024421 A KR 1019910024421A KR 910024421 A KR910024421 A KR 910024421A KR 940009901 B1 KR940009901 B1 KR 940009901B1
- Authority
- KR
- South Korea
- Prior art keywords
- film
- pattern
- pressure
- polymer
- melted
- Prior art date
Links
- 238000004049 embossing Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title description 5
- 238000005266 casting Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 230000007547 defect Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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
- 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
-
- 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
- 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
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- 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
- B29C2948/92514—Pressure
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
본 발명은 필름의 엠보싱 방법에 관한 것으로, 여러 가지의 수려한 무늬를 필름표면에 형성시킬 수 있는엠보싱 필름의 제조방법에 관한 것이다.The present invention relates to a method for embossing a film, and to a method for producing an embossed film capable of forming various beautiful patterns on the film surface.
일반적으로 제조되는 중합체 필름들은 최근 공업 및 산업용 포장 재료로 널리 사용되고 있는 바, 이들의 용도에 따라 필름의 외관을 수려하게 한 필요가 있었으며, 그로 인하여 필름표면에 요철무늬의 형성이 크게 요청되어 왔다.In general, the polymer films are generally used as industrial and industrial packaging materials, and according to their use, there is a need to enhance the appearance of the films. Therefore, the formation of uneven patterns on the surface of the films has been greatly requested.
따라서, 종래에는 필름을 제조하는 과정에서 무늬를 필름에 부여하는 방법이 선행되어 왔으며, 그 대표적인 방법으로서 필름용 수지를 용융, 압출시켜 캐스팅(casting)하는 과정에서 필름에 엠보싱, 즉 무늬를 부여하는 것이 주로 이용되어 왔다.Therefore, conventionally, a method of imparting a pattern to a film in the process of manufacturing a film has been preceded. As a representative method, embossing, that is, imparting a pattern to a film in a process of melting and extruding the resin for the film, is cast. It has been mainly used.
예컨대, 필름용 수지를 캐스팅하게 되는 캐스팅드럼에 무늬를 새겨넣어 필름용 수지를 캐스팅할 때 캐스팅드럼상의 무늬가 필름에 엠보싱되게 하는 방법을 이용해 왔으나, 이와같은 방법을 사용할 경우에는 캐스팅드럼상에는 한가지 이상의 무늬는 형성시킬 수 없으므로 인하여 필름에 엠보싱되는 무늬는 항시 일정하였으며, 단순한 무늬를 갖는 필름만 반복적으로 제조할 수 밖에 없는 단점이 있었다.For example, when casting the resin for the film by engraving the pattern on the casting drum to cast the resin for the film has been used a method of embossing the pattern on the casting drum, but when using this method, at least one on the casting drum Because the pattern cannot be formed, the pattern embossed on the film was always constant, and there was a disadvantage that only the film having a simple pattern could be repeatedly produced.
이에 본 발명은 종래의 이와같은 단점을 해소시키기 위한 것으로서, 종래와 같이 캐스팅드럼에다 무늬를 새겨 넣지 않고, 용융폴리머의 다이토출시 토출압력을 변화시킴으로써 폴리머의 흐름차에 의해 필름 표면에 물결 무늬모양을 유도하는 엠보싱 필름을 제공하는데 그 목적이 있다.Accordingly, the present invention is to solve such a drawback of the prior art, by changing the discharge pressure during die ejection of the molten polymer, without having to engrave a pattern on the casting drum as in the prior art, by the flow difference of the polymer to form a wave pattern on the film surface The purpose is to provide an inducing embossing film.
이하 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 필름을 엠보싱하는데 있어서, 필름용 폴리머를 용융하여 다이(Die)를 통해 캐스팅드럼(casting Drum)상으로 토출시킬 때 그 토출압력을 30-40kg/cm2의 범위내에서 차등적으로 공급하여 줌으로써 엠보싱 필름을 제조할 수 있는 방법에 관한 것이다.In the present invention, in embossing a film, when the polymer for film is melted and discharged onto a casting drum through a die, the discharge pressure is differentially supplied within a range of 30-40 kg / cm 2 . The present invention relates to a method for producing an embossed film.
본 발명을 더욱 상세하게 설명하면 다음과 같다.The present invention is described in more detail as follows.
먼저 폴리머를 278-285℃의 온도에서 용융시켜 점도가 800-850 포이즈(poise) 정도될 때 다이로 이동시켜 토출을 실시하되 그때의 토출압력을 30-40kg/cm2내에서 차등적으로 공급시켜 그 압력의 변화에 의한 흐름차에 의해 캐스팅 드럼상에 토출되어지는 필름에 엠보싱 효과를 나타내게 한다.First, the polymer is melted at a temperature of 278-285 ° C. and moved to a die when the viscosity is about 800-850 poise. Then, the discharge pressure is differentially supplied within 30-40 kg / cm 2 . The difference in the pressure causes the film discharged on the casting drum to exhibit an embossing effect.
필요에 따라 물결무늬 모양을 촘촘하게 하거나 또는 그 반대로 넓게 할 경우에는 공급되어지는 압력의 시간 변화에 따라 조절이 가능하게 한다.If necessary, if the wave pattern is densely or vice versa wide, it can be adjusted according to the time change of the supplied pressure.
또한, 무늬모양을 깊게 또는 얕게 할 필요가 있는 경우에는 차등 공급되어지는 압력차를 크게 또는 작게 조절함으로써 행할 수 있다.Moreover, when it is necessary to make a pattern deep or shallow, it can carry out by adjusting the pressure difference supplied differentially large or small.
만약 차등 공급되는 그 압력차가 10kg/cm2를 넘을 경우에는 그 두께의 폭이 너무 크게 되어 필름이 절단되는 문제점이 발생되게 되므로 이를 넘지 않도록 한다.If the differential pressure is more than 10kg / cm 2 is supplied so that the width of the thickness is too large to cause the problem that the film is cut so as not to exceed this.
또한 공급되어지는 압력이 30kg/cm2미만일 경우에는 다이 토출시 불규칙적인 토출로 전체적인 두께가 불량해지는 문제점이 있으며, 40kg/cm2를 초과하는 경우에 있어서는 심한 다이(Die) 팽윤현상을 초래하여 냉각 드럼 부착시에 시이트형성의 어려움이 생기는 문제점이 발생하게 된다.In addition, if the pressure supplied is less than 30kg / cm 2 , there is a problem in that the overall thickness becomes poor due to irregular ejection during die ejection, and in the case of exceeding 40kg / cm 2 , cooling occurs due to severe die swelling phenomenon. When the drum is attached, there arises a problem of difficulty in sheet formation.
또한 토출되는 폴리머는 전단속도를 80/초-1이 되도록 함이 좋다.In addition, the discharged polymer may be a shear rate of 80 / sec -1 .
다이로부터 토출되어진 폴리머는 회전되는 캐스팅드럼 상에서 냉각되어(냉각온도 약 30℃), 이후 통상의 방법으로 연신, 열처리, 변부절단, 권취함으로써 원하고자 하는 필름을 제조하게 된다.The polymer discharged from the die is cooled on a rotating casting drum (cooling temperature of about 30 ° C.), and then the desired film is prepared by stretching, heat treatment, edge cutting, and winding in a conventional manner.
이하, 본 발명을 실시예를 통하여 설명하면 다음과 같다.Hereinafter, the present invention will be described through Examples.
단, 본 발명의 실시예로 한정되는 것은 아니다.However, it is not limited to the Example of this invention.
[실시예 1]Example 1
필름용 폴리에스테르 칩을 280℃에서 용융하여 점도가 830 포이즈가 될 때 티-다이(T-Die)를 통하여 토출압력을 30kg/cm2와 35kg/cm2로 0.5초 간격으로 차등적으로 공급하며 캐스팅드럼상으로 80/초-1의 전단속도로 토출시키고, 이어 냉각된 엠보싱 형태의 필름을 종연신기에서 100℃에서 종연신한 후 이어 130℃정도에서 텐터식 횡연신을 행한 후 열처리 및 권취하여 최종 필름을 제조하였다.When the polyester chip for film is melted at 280 ℃ and the viscosity reaches 830 poise, the discharge pressure is differentially supplied at 30kg / cm 2 and 35kg / cm 2 at 0.5 second intervals through a T-Die. After discharging at 80 / sec- 1 shear rate onto the casting drum, the cooled embossed film was longitudinally stretched at 100 ° C in a longitudinal drawing machine, followed by tenter type transverse stretching at about 130 ° C, followed by heat treatment and winding. A film was prepared.
이 제조조건 및 최종 제품의 형상을 표1에 나타내었다.The manufacturing conditions and the shape of the final product are shown in Table 1.
[실시예 2]Example 2
토출압력을 34kg/cm2와 39kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as that in Example 1 except that the pressure was supplied at 34 kg / cm 2 and 39 kg / cm 2 .
[실시예 3]Example 3
토출압력을 30kg/cm2와 40kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as that in Example 1 except that the pressure was supplied at 30 kg / cm 2 and 40 kg / cm 2 .
[실시예 4]Example 4
토출압력을 34kg/cm2와 35kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as in Example 1 except that the discharge pressure was supplied at 34 kg / cm 2 and 35 kg / cm 2 .
[비교예 1]Comparative Example 1
토출압력을 28kg/cm2와 34kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as that in Example 1 except that 28 kg / cm 2 and 34 kg / cm 2 were differentially supplied.
[비교예 2]Comparative Example 2
토출압력을 29kg/cm2와 41kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as that in Example 1 except that the pressure was supplied at 29 kg / cm 2 and 41 kg / cm 2 .
[비교예 3]Comparative Example 3
토출압력을 35kg/cm2와 41kg/cm2로 차등 공급하여 준 것 외에는 실시예1과 동일하게 하였다.The discharge pressure was the same as that in Example 1 except that the discharge pressure was supplied at 35 kg / cm 2 and 41 kg / cm 2 .
[표 1]TABLE 1
※ ○ : 양호, △ : 종종 절단, × : 자주 절단※ ○: Good, △: often cut, ×: often cut
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910024421A KR940009901B1 (en) | 1991-12-26 | 1991-12-26 | Manufacturing method of embossing film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910024421A KR940009901B1 (en) | 1991-12-26 | 1991-12-26 | Manufacturing method of embossing film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930012251A KR930012251A (en) | 1993-07-20 |
| KR940009901B1 true KR940009901B1 (en) | 1994-10-18 |
Family
ID=19326049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910024421A KR940009901B1 (en) | 1991-12-26 | 1991-12-26 | Manufacturing method of embossing film |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940009901B1 (en) |
-
1991
- 1991-12-26 KR KR1019910024421A patent/KR940009901B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930012251A (en) | 1993-07-20 |
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