KR101975644B1 - 중공 용기의 제조 방법 및 제조 장치 - Google Patents
중공 용기의 제조 방법 및 제조 장치 Download PDFInfo
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- KR101975644B1 KR101975644B1 KR1020167035763A KR20167035763A KR101975644B1 KR 101975644 B1 KR101975644 B1 KR 101975644B1 KR 1020167035763 A KR1020167035763 A KR 1020167035763A KR 20167035763 A KR20167035763 A KR 20167035763A KR 101975644 B1 KR101975644 B1 KR 101975644B1
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- B29B11/06—Making preforms by moulding the material
- B29B11/08—Injection moulding
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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
- 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
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C2049/4879—Moulds characterised by mould configurations
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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
- B29C2791/00—Shaping characteristics in general
- B29C2791/001—Shaping in several steps
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- B29C2949/00—Indexing scheme relating to blow-moulding
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- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
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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
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
- B29C2949/0779—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform characterised by the body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/00—Indexing scheme relating to blow-moulding
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- B29C2949/076—Preforms or parisons characterised by their configuration characterised by the shape
- B29C2949/0768—Preforms or parisons characterised by their configuration characterised by the shape characterised by the shape of specific parts of preform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/0817—Wall thickness of the body
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C2949/00—Indexing scheme relating to blow-moulding
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- B29C2949/081—Specified dimensions, e.g. values or ranges
- B29C2949/0811—Wall thickness
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C49/42421—Means for deforming the parison prior to the blowing operation before laying into the mould
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
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Abstract
Description
도 2는 중공 용기의 일례를 나타내는 단면도이다.
도 3은 사출 성형된 프리폼의 단면도이다.
도 4는 일실시 형태와 관련되는 중공 용기의 제조 장치의 개략 구성을 나타내는 블록도이다.
도 5는 일실시 형태와 관련되는 사출 공정을 설명하는 개략 단면도이다.
도 6은 일실시 형태의 중간품 형성 공정을 설명하는 개략 단면도이다.
도 7은 천공 로드의 변형예를 나타내는 단면도이다.
도 8은 일실시 형태의 최종 블로우 성형 공정을 설명하는 개략 단면도이다.
도 9는 일실시 형태와 관련되는 중공 용기의 제조 장치의 다른 예를 나타내는 블록도이다.
도 10은 일실시 형태와 관련되는 최종 블로우 성형 공정의 다른 예를 설명하는 개략 단면도이다.
12 목부(neck portion) 13 몸통부(barrel portion)
14 저부(bottom portion) 20 프리폼(preform)
21 나사 홈(groove)
22 목부 23 몸통부
24 기준 구멍 30 중간 성형품
32 목부 33 몸통부
34 구부(mouth portion) 35 공간부
100 제조 장치(성형 장치)
110 사출 장치 120 사출 성형부
121 사출 성형형(injection molding mold)
122 목형(neck mold)
123 사출 캐비티형(injection cavity mold)
124 사출 코어형(injection core mold)
125 사출 공간 126 게이트(gate)
130 중간 성형부
131 중간 블로우 성형형(intermediate blow molding mold)
132 목형(neck mold)
133 중간 블로우 성형 할형((intermediate blow molding split mold)
134 천공 로드(boring rod)
135 제1의 부재 136 제2의 부재
137 유로 공간(flow path space)
140 최종 블로우 성형부 141 최종 블로우 성형형
142 목형(neck mold) 143 최종 블로우 성형 할형
144 천공 로드(boring rod) 150 취출부
Claims (11)
- 목부와 몸통부를 가지고 이 몸통부의 축방향에 걸쳐서 성형 재료가 채워진 프리폼을 사출 성형에 의해 형성하는 사출 성형 공정과,
상기 목부측으로부터 상기 몸통부 내로 천공 로드를 삽입하고, 당해 몸통부에 적어도 소정 깊이의 공간부를 형성하여 상기 프리폼을 중간 성형품으로 하는 중간품 형성 공정과,
상기 중간 성형품을 블로우 성형하여 최종 성형품인 중공 용기를 형성하는 최종 블로우 성형 공정을 가지는 것을 특징으로 하는 중공 용기의 제조 방법. - 제1항에 있어서,
상기 사출 성형 공정에서는 상기 목부에 소정 깊이의 기준 구멍을 형성하고, 상기 중간품 형성 공정에서는 상기 기준 구멍으로부터 상기 몸통부 내에 상기 천공 로드를 삽입하여 상기 공간부를 형성하는 것을 특징으로 하는 중공 용기의 제조 방법. - 제2항에 있어서,
상기 사출 성형 공정에서는 상기 기준 구멍을 상기 몸통부에 이르는 깊이로 형성하는 것을 특징으로 하는 중공 용기의 제조 방법. - 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 중간품 형성 공정에서는 상기 천공 로드의 적어도 선단부로부터 에어를 분출하게 하면서 당해 천공 로드를 상기 몸통부 내로 삽입함으로써, 상기 공간부를 소정 깊이에 형성하는 것을 특징으로 하는 중공 용기의 제조 방법. - 제4항에 있어서,
상기 중간품 형성 공정에서는 상기 몸통부에 상기 공간부를 형성함과 아울러, 상기 중간 성형품의 몸통부가 소정 직경이 되도록 블로우 성형하는 것을 특징으로 하는 중공 용기의 제조 방법. - 제4항에 있어서,
상기 중간품 형성 공정과 상기 최종 블로우 성형 공정을 연속적으로 실행하고, 상기 천공 로드로부터 분사시킨 에어에 의해 상기 중간 성형품을 블로우 성형하여 상기 중공 용기를 형성하는 것을 특징으로 하는 중공 용기의 제조 방법. - 목부와 몸통부를 가지고 적어도 몸통부의 축방향에 걸쳐서 성형 재료가 채워진 프리폼을 사출 성형에 의해 형성하는 사출 성형부와,
상기 목부측으로부터 상기 몸통부 내로 천공 로드를 삽입하여 당해 몸통부에 적어도 소정 깊이의 공간부를 형성하여 상기 프리폼을 중간 성형품으로 하는 중간 성형부와,
상기 중간 성형품을 블로우 성형하여 최종 성형품인 중공 용기를 형성하는 최종 블로우 성형부를 가지는 것을 특징으로 하는 중공 용기의 제조 장치. - 제7항에 있어서,
상기 천공 로드는, 적어도 그 선단부로부터 상기 프리폼의 상기 몸통부 내로 에어를 분출 가능하게 구성되어 있는 것을 특징으로 하는 중공 용기의 제조 장치. - 제8항에 있어서,
상기 천공 로드는, 그 선단부에 에어를 분출하는 링 모양의 개구부를 구비하는 것을 특징으로 하는 중공 용기의 제조 장치. - 제7항 내지 제9항 중 어느 한 항에 있어서,
상기 중간 성형부는, 상기 천공 로드를 구비함과 아울러, 상기 프리폼이 수용되는 중간 블로우 성형형을 구비하고,
이 중간 블로우 성형형 내에 상기 프리폼을 수용한 상태로 상기 몸통부에 상기 천공 로드를 삽입하여 상기 공간부를 형성함과 아울러, 당해 몸통부가 소정 직경이 되도록 블로우 성형하는 것을 특징으로 하는 중공 용기의 제조 장치. - 제7항 내지 제9항 중 어느 한 항에 있어서,
상기 최종 블로우 성형부가 상기 중간 성형부를 겸하고 있고, 상기 최종 블로우 성형부가, 상기 천공 로드를 구비함과 아울러, 최종 블로우 성형형을 구비하고,
당해 최종 블로우 성형부에서는, 상기 최종 블로우 성형형 내에 상기 프리폼을 수용한 상태로 상기 몸통부에 상기 천공 로드를 삽입하여 상기 공간부를 형성하여 상기 프리폼을 상기 중간 성형품으로 하고, 연속하여 당해 중간 성형품을 블로우 성형함으로써 상기 중공 용기를 형성하는 것을 특징으로 하는 중공 용기의 제조 장치.
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