JP6415902B2 - プリフォーム及びボトルの製造方法 - Google Patents
プリフォーム及びボトルの製造方法 Download PDFInfo
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- JP6415902B2 JP6415902B2 JP2014174354A JP2014174354A JP6415902B2 JP 6415902 B2 JP6415902 B2 JP 6415902B2 JP 2014174354 A JP2014174354 A JP 2014174354A JP 2014174354 A JP2014174354 A JP 2014174354A JP 6415902 B2 JP6415902 B2 JP 6415902B2
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- colored resin
- colored
- layer
- preform
- predetermined time
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- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229920005989 resin Polymers 0.000 claims description 82
- 239000011347 resin Substances 0.000 claims description 82
- 239000010410 layer Substances 0.000 claims description 58
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 238000000071 blow moulding Methods 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000758 substrate Substances 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/08—Injection moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/14—Making preforms characterised by structure or composition
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
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- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
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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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- 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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- B29C2949/00—Indexing scheme relating to blow-moulding
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- B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
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- 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
- B29C2949/28—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at bottom portion
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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
- B29C2949/30—Preforms or parisons made of several components
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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
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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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- 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
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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
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
1.層厚が徐々に減少するグラデーション領域を形成する着色層を有する合成樹脂製のプリフォームの製造方法において、
前記プリフォームは、第1の着色樹脂からなる基材層の外周側に、第1の着色樹脂とは異なる色の第2の着色樹脂からなり、上方に向かって層厚が徐々に減少するグラデーション領域を形成する着色層が形成されると共に、該着色層の外周側に該着色層の全面に亘って前記第1の着色樹脂からなる被覆層が形成されており、
前記プリフォームの底部中央に対応して設けられたゲート内に前記第1の着色樹脂が充填された状態から、前記ゲートを介して、金型のキャビティ内に前記第1の着色樹脂を第1の所定時間に亘って射出すると共に、前記第2の着色樹脂を第2の所定時間に亘って射出し、
前記第1の所定時間の開始時点を前記第2の所定時間の開始時点以後且つ前記第2の所定時間の終了時点より前とし、前記第1の所定時間の終了時点を前記第2の所定時間の終了時点より後とすると共に、前記第2の着色樹脂の射出速度を前記第1の着色樹脂の射出速度よりも速くすることで、前記キャビティの外周面における前記グラデーション領域に対応する領域が前記第1の着色樹脂に被覆された状態で前記第2の着色樹脂が前記第1の着色樹脂の中央部を突き貫いた後、前記第1の着色樹脂が、金型のキャビティ内に位置する前記第2の着色樹脂の中央部を突き貫いて、前記第2の着色樹脂を引き延ばしつつ流動することにより、
前記基材層の外周側に前記着色層が形成されると共に、前記着色層の外周側に前記被覆層が形成される、プリフォームの製造方法。
ここに、本明細書において、上下方向とは、プリフォーム1の軸心に沿う方向を意味し、上方とは、プリフォーム1の底部2から口部4に向かう方向を意味し、下方とは、その反対方向を意味するものとする。
2 底部
3 胴部
4 口部
5 基材層
6a 外側着色層(着色層)
6b 内側着色層
7 被覆層
8,8’ ボトル
R1 第1の着色樹脂
R2 第2の着色樹脂
Gr グラデーション領域
T1s 第1の所定時間の開始時点
T2s 第2の所定時間の開始時点
T1f 第1の所定時間の終了時点
T2f 第2の所定時間の終了時点
Ta,Tb 時点
Gm グラデーション模様
Claims (3)
- 層厚が徐々に減少するグラデーション領域を形成する着色層を有する合成樹脂製のプリフォームの製造方法において、
前記プリフォームは、第1の着色樹脂からなる基材層の外周側に、第1の着色樹脂とは異なる色の第2の着色樹脂からなり、上方に向かって層厚が徐々に減少するグラデーション領域を形成する着色層が形成されると共に、該着色層の外周側に前記第1の着色樹脂からなる被覆層が形成されており、
前記プリフォームの底部中央に対応して設けられたゲート内に前記第1の着色樹脂が充填された状態から、前記ゲートを介して、金型のキャビティ内に前記第1の着色樹脂を第1の所定時間に亘って射出すると共に、前記第2の着色樹脂を第2の所定時間に亘って射出し、
前記第1の所定時間の開始時点を前記第2の所定時間の開始時点以後且つ前記第2の所定時間の終了時点より前とし、前記第1の所定時間の終了時点を前記第2の所定時間の終了時点より後とすると共に、前記第2の着色樹脂の射出速度を前記第1の着色樹脂の射出速度よりも速くすることで、前記キャビティの外周面における前記グラデーション領域に対応する領域が前記第1の着色樹脂に被覆された状態で前記第2の着色樹脂が前記第1の着色樹脂の中央部を突き貫いた後、前記第1の着色樹脂が、金型のキャビティ内に位置する前記第2の着色樹脂の中央部を突き貫いて、前記第2の着色樹脂を引き延ばしつつ流動することにより、
前記基材層の外周側に前記着色層が形成されると共に、前記着色層の外周側に前記被覆層が形成されることを特徴とするプリフォームの製造方法。 - 前記第1の着色樹脂のIV値が0.5〜0.63の範囲内である、請求項1に記載のプリフォームの製造方法。
- 請求項1又は2に記載のプリフォームの製造方法によって製造されたプリフォームを2軸延伸ブロー成形することで、前記着色層により着色濃度に係るグラデーションが現出して加飾されたボトルを形成することを特徴とするボトルの製造方法。
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US15/324,234 US20170197351A1 (en) | 2014-08-28 | 2015-08-06 | Preform and bottle |
PCT/JP2015/003967 WO2016031150A1 (ja) | 2014-08-28 | 2015-08-06 | プリフォーム及びボトル |
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