KR860000209B1 - Injection stretch blow molding of two-layered bottle - Google Patents

Injection stretch blow molding of two-layered bottle Download PDF

Info

Publication number
KR860000209B1
KR860000209B1 KR1019830001292A KR830001292A KR860000209B1 KR 860000209 B1 KR860000209 B1 KR 860000209B1 KR 1019830001292 A KR1019830001292 A KR 1019830001292A KR 830001292 A KR830001292 A KR 830001292A KR 860000209 B1 KR860000209 B1 KR 860000209B1
Authority
KR
South Korea
Prior art keywords
parison
temperature
injection
blow molding
molding
Prior art date
Application number
KR1019830001292A
Other languages
Korean (ko)
Other versions
KR840003985A (en
Inventor
가다시 아오끼
Original Assignee
가다시 아오끼
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12959777&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR860000209(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 가다시 아오끼 filed Critical 가다시 아오끼
Publication of KR840003985A publication Critical patent/KR840003985A/en
Application granted granted Critical
Publication of KR860000209B1 publication Critical patent/KR860000209B1/en

Links

Images

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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1684—Injecting parison-like articles
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3016—Preforms or parisons made of several components at body portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/302—Preforms or parisons made of several components at bottom portion
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • B29C2949/3026—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique having two or more components
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3032—Preforms or parisons made of several components having components being injected
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3032—Preforms or parisons made of several components having components being injected
    • B29C2949/3034—Preforms or parisons made of several components having components being injected having two or more components being injected
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Two-ply moldings are produced from two different polymers using different molding temps. by injection and blow-molding. The inner parison(11) is injection-molded first from the lower temp. polymer; the outer parison(12), which uses higher temp. polymer, is injection molded around the first. At the same time, the outer surface of the inner parison is cooled to the lowest possible temp. The combined molding is passed immediately from the injection mold onto a blow mold. The temp. of the injection-molded combination parison does not require alteration for blow-molding.

Description

2층병등의 사출연신 취입 성형방법Injection Stretch Blow Molding Method for Two-Layer Bottles

제1도는 내부 패리슨(parison)의 취입성형단계를 보여주는 종단면도.1 is a longitudinal sectional view showing the blow molding step of an internal parison;

제2도는 외부 패리슨의 취입성형단계를 보여주는 종단면도.2 is a longitudinal sectional view showing a blow molding step of an external parison.

제3도는 2층 패리슨의 부분단면도.3 is a partial cross-sectional view of a two-layer parison.

제4도는 모울드내에서 사출연신취입 성형한 2층병의 상태를 보여주는 종단면도.Figure 4 is a longitudinal sectional view showing the state of a two-layer bottle injection molded blow molded in a mold.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

11 : 내부 패리슨 12 : 외부 패리슨11: Inner Parison 12: Inner Parison

본 발명은 사용온도가 서로 다른 두 종류의 합성수지를 사용하는 2층병등의 사출연신취입성형방법에 관한 것이다.The present invention relates to an injection stretch blow molding method such as a two-layer bottle using two kinds of synthetic resins having different operating temperatures.

2층병등과 같은 중공부로 된 제품을 만들기 위해 2층 패리슨을 연신시켜 취입 성형하는 경우에 내부 및 외부 패리슨을 만들기 위해 사용된 합성수지의 온도가 각각 연신 및 취입작업 온도범위내에 있어야 한다는 것이 문제가 된다.In the case of blow molding by forming a two-layer parison in order to make a product with a hollow part such as a two-layer bottle, etc., it is a problem that the temperature of the synthetic resin used to make the inner and outer parison must be within the temperature range of drawing and blowing work, respectively. Becomes

하나의 수지 및 동일한 수지 또는 사용온도가 크게 다르지 않은 두 종류의 합성수지를 사용하는 2층병을 연신취입 성형할때, 내·외부층 사이에 어느정도 온도차가 생길지라도, 2층변과 같은 중공부 제품을 만들기 위해 연신취입시키기 직전에 즉시 온도를 조정할 수 있었다.When blow-molding a two-layer bottle using one resin, the same resin, or two kinds of synthetic resins, which do not differ greatly in use temperature, even if there is a temperature difference between the inner and outer layers, a hollow product such as a two-layer side is made. The temperature could be adjusted immediately immediately before stretching.

그러나, 두 종류의 합성수지의 사용온도가 극히 다를때는 온도조정이 곤란하여 2층병등을 성형할 수 없다. 사용온도가 다른 두 종류의 합성수지를 사용하여 2층 패리슨을 취입성형할 경우, 낮은 사용온도를 갖는 합성수지를 내부 패리슨 및 그 외부로서 먼저 성형하고 높은 사용온도를 갖는 합성수지를 외부 패리슨으로서 성형하면, 취입성형을 행할때 내부패리슨의 온도는 외부패리슨의 온도로 연신취입 성형을 하기 위한 적정사용온도 이상으로 올라간다.However, when the use temperatures of the two kinds of synthetic resins are extremely different, it is difficult to adjust the temperature and thus cannot form a two-layer bottle. When blow molding two-layer parison using two kinds of synthetic resins with different operating temperatures, the synthetic resin having a lower working temperature is first formed as the inner parison and the exterior thereof, and the synthetic resin having a higher operating temperature as the outer parison. When the blow molding is performed, the temperature of the inner parison rises above the appropriate operating temperature for the stretch blow molding to the temperature of the outer parison.

이 경우, 두 종류의 합성수지 사이의 온도차가 심각한 정도로 크지 않다면 사용온도의 범위내로 각각의 온도를 조정할 수 있도록 전체의 2층 패리슨의 온도조정이 가능하다.In this case, if the temperature difference between the two kinds of synthetic resins is not so great, it is possible to adjust the temperature of the entire two-layer parison so that each temperature can be adjusted within the range of use temperature.

그러나, 온도차기 눈에 띄게 다른 합성수지에 대해서는 상기 조정이 극히 곤란하다. 그 이유는 큰 온도차로 인해, 전체 온도조정이 불가능하게 되어 내·외부 패리슨의 온도를 각각 조정해 주어야 하기 때문이다. 필요이상으로 높아진 내부패리슨의 온도를 조정하기 위하여 연신, 취입성형에 적합한 사용온도로 하기 위한 냉각장치가 요구된다.However, the above adjustment is extremely difficult for the temperature difference noticeably different synthetic resins. The reason is that due to the large temperature difference, it is impossible to adjust the overall temperature, and thus the temperature of the inner and outer parison must be adjusted. In order to adjust the temperature of the internal parison which is higher than necessary, a cooling device is required to set the operating temperature suitable for drawing and blow molding.

내부패리슨의 온도조정을 행하는 동안 외부패리슨의 온도가 낮아지는 것을 방지할 필요가 있다. 하나의 장치로서 한편으로는 냉각을 행하고 다른 한편으로는 열보호를 하기는 곤란하며 또한 그 온도조정도 극히 단시간내에 이루어져야 한다.It is necessary to prevent the temperature of the external parison from lowering while adjusting the temperature of the internal parison. As a device it is difficult to cool on the one hand and thermally protect on the other hand, and the temperature adjustment must be made in a very short time.

상기한 바와 같이 본 발명은 2층 패리슨의 온도조정을 요하지 않고 취입성형한 직후에 사용온도가 다른 두 종류의 합성수지를 사용하여 연신취입성형하므로써, 2층병과 같은 중공부 제품을 만들 수 있는 신규의 방법을 제공하는 것이다.As described above, the present invention is a novel blow molding product using two kinds of synthetic resins having different operating temperatures immediately after blow molding without requiring temperature adjustment of a two-layer parison, thereby making a hollow part product such as a two-layer bottle. Is to provide a way.

본 발명의 방법은 본 발명의 발명자가 발명하였으며 미국특허 제4,321,029호에 기술된 취입성형기를 사용하므로써 실시될 수 있다. 이 경우 미국특허에 기술된 온도제어의 단계를 이용할 필요는 없다.The method of the present invention can be carried out by using the blow molding machine invented by the inventor of the present invention and described in US Pat. No. 4,321,029. In this case it is not necessary to use the steps of temperature control described in the US patent.

상기 목적을 성취하기 위한 본 발명의 낮은 사용온도를 갖는 합성수지(예를 들면 폴리에틸렌 텔레프탈레이트)를 사용하여 내부패리슨을 성형하고, 높은 사용온도를 갖는 합성수지(예를 들면 폴리카보네이트, 폴리에틸렌, 폴리프로필렌, 에틸렌비닐아세테이트 등)을 사용하여 외부패리슨을 성형하며 외부패리슨의 성형시 내부패리슨의 외표면을 가능한한 낮은 온도로 냉각시키고 빼낸직후 성형된 2층패리슨을 연신취입성형하는 것이 특징이다.In order to achieve the above object, the inner parison is formed by using a synthetic resin having a low service temperature (for example, polyethylene terephthalate) of the present invention, and a synthetic resin having a high service temperature (for example, polycarbonate, polyethylene, and polypropylene). , Ethylene vinyl acetate, etc.) to form the outer parison, and when forming the outer parison, the outer surface of the inner parison is cooled to as low as possible and stretched out after forming the 2-layer parison. .

본 발명은 도면을 참조하여 상세히 기술할 것이다.The invention will be described in detail with reference to the drawings.

우선, 취입상태에서, 낮은 사용온도를 갖는 합성수지를 내부에 있는 중공부(1)와 코어(2) 사이에 취입시켜 내부패리슨(11)을 만든다. 다음에는 내부패리슨(11)의 외표면을 중공부로 가능한한 낮은 온도로 냉각한 다음, 외부에 있는 중공부(3)내로 이동시킬 수 있도록 중공부(1)와 코어(2)에서 패리슨을 빼낸다.First, in the blown state, a synthetic resin having a low use temperature is blown between the hollow part 1 and the core 2 therein to make the inner parison 11. Next, the outer surface of the inner parison 11 is cooled to the lowest possible temperature with the hollow part, and then the parison is removed from the hollow part 1 and the core 2 so as to move into the outer hollow part 3. Pull out.

패리슨을 중공부(3)에 삽입시키고, 코어(4)를 패리슨에 삽입시켜 그 후에 높은 사용온도를 갖는 합성수지를 내부패리슨의 외부에서 취입시켜 외부패리슨(12)을 성형한다.The parison is inserted into the hollow part 3, the core 4 is inserted into the parison, and then the outer parison 12 is formed by blowing a synthetic resin having a high use temperature from the outside of the inner parison.

상기와 같이 2층패리슨(13)을 성형한후, 연신 및 취입상태로 이동시키기 위해 중공부(3)와 코어(4)로부터 빼낸다. 이연신취입상태에서 패리슨을 연신시키고 취입성형하여 2층병과 같은 중공부 제품을 만든다.After the two-layer parison 13 is molded as described above, the two-layer parison 13 is removed from the hollow portion 3 and the core 4 in order to move to the stretched and blown state. Parison is stretched and blow-molded in the delayed blown state to make a hollow product such as a two-layer bottle.

상기 방법에서, 내부패리슨(11)의 외표면을 심하게 냉각시키지 않고 외부패리슨(12)을 성형하고자 하는 경우에, 외부패리슨(12)을 성형하기 위한 합성수지의 취입성형온도가 높기 때문에 내부패리슨(11)은 가열되어 온도가 상승하게 된다.In the above method, when the outer parison 12 is to be molded without cooling the outer surface of the inner parison 11 severely, the blow molding temperature of the synthetic resin for forming the outer parison 12 is high. The subparison 11 is heated to raise the temperature.

반면에, 패리슨의 외표면을 가능한한 낮은 온도로 냉각시킬때 외부패리슨(12)으로부터 방출되는 열이 외표면에 영향을 미쳐 외부온도를 상승시킨다. 그리므로, 전체 내부패리슨(11)은 외부패리슨(12)의 열적영향으로 외부패리슨(12)의 외부온도 즉, 내·외부패리슨 사이의 경계층(14)의 온도가 내부패리슨(11)의 내부온도에 도달할때까지는 필요이상 온도가 상승되지 않는다. 그러나, 외부패리슨(12)은 내부패리슨(11)이 시간의 경과에 따라 온도가 상승되게끔 영향을 주며, 반대로 스스로는 온도가 저하된다.On the other hand, when cooling the outer surface of the parison to the lowest possible temperature, the heat released from the outer parison 12 affects the outer surface and raises the outer temperature. Therefore, the entire inner parison 11 has a thermal effect of the outer parison 12, so that the outer temperature of the outer parison 12, that is, the temperature of the boundary layer 14 between the inner and outer parisons, is increased. The temperature does not rise more than necessary until the internal temperature of 11) is reached. However, the external parison 12 affects the internal parison 11 so that the temperature rises over time, and conversely, the temperature decreases by itself.

결과적으로, 이들 패리슨의 온도는 연신 및 취입에 적당한 사용온도에서 벗어나게 된다.As a result, the temperatures of these parisons deviate from the operating temperatures suitable for stretching and blowing.

부가적으로, 이때 생기는 가열속도는 그리 높지 않으므로 계면층(14)의 백색화현상이 생긴다. 본 발명에서는 2층패리슨(13)을 성형한후 상기한 백색화현상이 생기기전에 제4도에서와 같이 취입모울드(15)내에서 연신로드(16)로 패리슨을 길이방향으로 연신시키고 동시에 노즐(17)에서 공기를 취입하여 2층병(18)등을 성형한다.In addition, the heating rate generated at this time is not so high, so that whitening of the interface layer 14 occurs. In the present invention, after forming the two-layer parison 13, before the whitening occurs, the parison is stretched in the longitudinal direction with the drawing rod 16 in the blowing mold 15 as shown in FIG. Air is blown in at (17) to form a two-layer bottle (18) or the like.

[실시예]EXAMPLE

(1) 2층 패리슨(13)용 성형제(1) Molding agent for two-layer parison (13)

내부패리슨(11)……폴리에틸렌텐 테레프탈레이트Internal parison 11... … Polyethylene Ten Terephthalate

외부패리슨(12)……폴리카보네이트External parison 12... … Polycarbonate

(2) 성형조건(2) forming conditions

내부inside

중공부 냉각수온도……5℃ 이하Hollow Coolant Temperature … 5 ℃ or less

코 어 냉각수온도……20∼30℃Core coolant temperature… … 20 ~ 30 ℃

외부Out

중공부 냉각수온도……80∼90℃Hollow Coolant Temperature … 80 ~ 90 ℃

코 어 냉각수온도……70∼80℃Core coolant temperature… … 70 ~ 80 ℃

(3) 패리슨의 온도(3) parison temperature

내부패리슨(11)…… 90∼100℃Internal parison 11... … 90-100 ℃

외부패리슨(12)……130∼140℃External parison 12... … 130 ~ 140 ℃

여기서, 내부패리슨(11)의 온도는 외부패리슨(12)의 잠재열에 의해 상승된 온도이다.Here, the temperature of the inner parison 11 is a temperature raised by the latent heat of the outer parison 12.

(4) 결 과(4) Result

우수한 투명도, 벽두께의 균일한 분배, 필링(peeling)이 어렵다는 등의 특성을 갖는 2층병을 얻었다.A two-layer bottle having characteristics such as excellent transparency, uniform distribution of wall thickness, and difficult to peel was obtained.

Claims (1)

사용온도가 다른 두 종류의 합성수지를 사용하여, 2층병등과 같은 중공부로 된 제품내에서 연신취입 성형한 패리슨이 내부에 사출성형되어 있는 2층병등을 사출연신취입성형하는 방법에 있어서, 낮은 사용온도를 갖는 합성수지를 사용하여 내부패리슨을 성형하고 높은 사용온도를 갖는 합성수지를 사용하여 외부패리슨을 성형하여, 외부패리슨의 성형시 내부패리슨의 외표면의 온도를 가능한한 낮게 하고, 빼낸후 즉시 취입성형을 실시하는 것을 특징으로 하는 2층병등의 사출연신취입 성형방법.In the method of injection-stretching and molding a two-layer bottle in which an injection-molded parison is molded in a hollow part product such as a two-layer bottle using two kinds of synthetic resins having different operating temperatures, The inner parison is formed using a synthetic resin having an operating temperature, and the outer parison is formed using a synthetic resin having a high operating temperature, so that the temperature of the outer surface of the inner parison is as low as possible when forming the outer parison, An injection stretch blow molding method such as a two-layer bottle, wherein the blow molding is performed immediately after removal.
KR1019830001292A 1982-03-31 1983-03-30 Injection stretch blow molding of two-layered bottle KR860000209B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP?57-54050 1982-03-31
JP57054050A JPS58168531A (en) 1982-03-31 1982-03-31 Injection stretch blow molding of two-layered bottle
JP54050 1982-03-31

Publications (2)

Publication Number Publication Date
KR840003985A KR840003985A (en) 1984-10-06
KR860000209B1 true KR860000209B1 (en) 1986-03-15

Family

ID=12959777

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019830001292A KR860000209B1 (en) 1982-03-31 1983-03-30 Injection stretch blow molding of two-layered bottle

Country Status (7)

Country Link
JP (1) JPS58168531A (en)
KR (1) KR860000209B1 (en)
DE (1) DE3311608A1 (en)
ES (1) ES8406938A1 (en)
FR (1) FR2524373B1 (en)
GB (1) GB2117698A (en)
IT (1) IT1165741B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201909A (en) * 1984-03-26 1985-10-12 Toyo Seikan Kaisha Ltd Manufacture of multilayer stretch blown bottle
DE3545162A1 (en) * 1985-12-20 1987-07-02 Battenfeld Fischer Blasform METHOD AND DEVICE FOR PRODUCING HOLLOW BODIES FROM THERMOPLASTIC PLASTICS
US5571470A (en) * 1994-02-18 1996-11-05 The Coca-Cola Company Method for fabricating a thin inner barrier layer within a preform
AR002773A1 (en) 1995-07-07 1998-04-29 Continental Pet Technologies METHOD FOR INJECTION MOLDING OF A PLASTIC ARTICLE AND APPARATUS TO CARRY IT OUT.
US6217818B1 (en) * 1995-07-07 2001-04-17 Continental Pet Technologies, Inc. Method of making preform and container with crystallized neck finish
US20080118686A1 (en) * 2006-11-20 2008-05-22 Katherine Glasgow Injection blow molding process and article
DE102008057138A1 (en) * 2008-11-13 2010-05-20 Novapax Maschinenbau Gmbh & Co. Kg Method for manufacturing multi-layer plastic bottle in stations of injection blow-molding machine, involves injecting thermoplastic material in injection unit for forming outer layer on bottle, and outputting bottle in output station

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1950212A1 (en) * 1969-10-04 1971-04-15 Dynamit Nobel Ag Blow moulding laminated or coloured con- - tainers from injection moulded parisons
US4056590A (en) * 1974-06-03 1977-11-01 Farrell Patent Company Blow molding method with double cycle for core rods
JPS55111236A (en) * 1979-02-20 1980-08-27 Katashi Aoki Injection/stretching/blowing molding machine for two-layer molding
GB2062538B (en) * 1979-10-27 1983-08-10 Brother Ind Ltd Ultrasonic seam welding apparatus

Also Published As

Publication number Publication date
GB2117698A (en) 1983-10-19
ES521200A0 (en) 1984-09-01
IT1165741B (en) 1987-04-22
FR2524373B1 (en) 1986-11-07
KR840003985A (en) 1984-10-06
JPS58168531A (en) 1983-10-04
GB8308817D0 (en) 1983-05-11
FR2524373A1 (en) 1983-10-07
IT8367358A0 (en) 1983-03-31
ES8406938A1 (en) 1984-09-01
DE3311608A1 (en) 1983-10-06

Similar Documents

Publication Publication Date Title
US4871507A (en) Method for forming hollow partially crystalline biaxially oriented heat set polyethylene terephthalate articles
EP1825988B1 (en) Injection molding apparatus with cooled core
US4476170A (en) Poly(ethylene terephthalate) articles and method
US4512948A (en) Method for making poly(ethylene terephthalate) article
JP4714509B2 (en) Injection stretch blow molding method
US3632713A (en) Blow molding oriented articles using elongated oval plug
EP0066982A2 (en) Method of strengthening the neck portion of a bottle-shaped container of biaxially-oriented polyethylene terephthalate resin
PL172400B1 (en) Stress relieving in blow-moulded products and their heat treatment
JP5033469B2 (en) Injection stretch blow molding method for heat-resistant bottles
US5547631A (en) Process for annealing biaxially oriented hollow shaped thermoplastic atricles
US4582665A (en) Method of making poly(ethylene terephthalate) articles
US4439394A (en) Heat setting method
KR860000209B1 (en) Injection stretch blow molding of two-layered bottle
US3801690A (en) Closing mold halves on stretched portion of individual parison preform at orientation temperature
EP0725722B1 (en) Method of forming molecularly oriented preforms
CA1197961A (en) Poly(ethylene terephthalate) articles and method
JPH06179238A (en) Injection stretch blow molding machine
JPH0156890B2 (en)
US9802729B2 (en) Blow molding method, blow mold, and blow-molded container
GB1482956A (en) Process for moulding multi-layer articles
JP2002172681A (en) Orientation blown container and molding method therefor
KR20040020041A (en) Method Of Manufacturing Bottle Formed Mainly Of Polyethylene Terephthalate Resin
US6406661B1 (en) Heat set blow molding process
GB2126156A (en) A method of controlling the temperature of a parison during injection stretch-blow moulding
JPH0426291B2 (en)

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 19920305

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee