CN106182793A - 一种塑料编织袋的拉丝工艺 - Google Patents

一种塑料编织袋的拉丝工艺 Download PDF

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Publication number
CN106182793A
CN106182793A CN201610705366.8A CN201610705366A CN106182793A CN 106182793 A CN106182793 A CN 106182793A CN 201610705366 A CN201610705366 A CN 201610705366A CN 106182793 A CN106182793 A CN 106182793A
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China
Prior art keywords
drawing process
polywoven bag
cooling
heating
eliminostatic
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CN201610705366.8A
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English (en)
Inventor
厉艳荣
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Tianjin Xuhuihengyuan Plastic Packaging Corp
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Tianjin Xuhuihengyuan Plastic Packaging Corp
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Priority to CN201610705366.8A priority Critical patent/CN106182793A/zh
Publication of CN106182793A publication Critical patent/CN106182793A/zh
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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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92209—Temperature

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

本发明是一种塑料编织袋的拉丝工艺，包括的步骤有：挤出平膜；冷却；切割；加热拉伸定型；静电消除；卷绕成型。本发明所述的一种塑料编织袋的拉丝工艺，使用方便，制造成的塑料编织袋，手感佳、透明度适中、不容易断裂。

Description

一种塑料编织袋的拉丝工艺
技术领域
本发明涉及塑料编织袋领域，尤其涉及一种塑料编织袋的拉丝工艺。
背景技术
塑料编织袋生产线的关键工序就是拉丝，对工艺的条件要求高，对外部环境的要求严格，拉丝工艺的好坏，关系到塑料编织袋的质量。现有的拉丝工艺，制造成的塑料编织袋，手感差、透明度低、容易断裂；为此，我们设计了一种塑料编织袋的拉丝工艺。
发明内容
本发明提供一种塑料编织袋的拉丝工艺，包括的步骤有：挤出平膜；冷却；切割；加热拉伸定型；静电消除；卷绕成型；
1)挤出平膜：将混合后的原料送入挤出机，经过料筒加热和螺杆与机筒的相互剪切作用后，在几乎完全塑化的状态下成为熔融状，所述加热温度控制在220～250℃，经过模头成型挤出成为薄膜，控制牵引比为1:5；
2)冷却：将薄膜水冷却，水温控制在48～52℃；
3)切割：用刀片将冷却后的薄膜切割成胚丝；
4)加热拉伸定型：经过烘箱被拉伸形成扁丝，控制牵伸比为5，扁丝再经过热定型后，在低牵引速度的情况下收缩，控制回缩比为0.96～0.99，并经45-50℃的低温处理；
5)静电消除：加热拉伸定型后的塑料丝，用铁片进行静电消除；
6)卷绕成型：通过凸轮组合式节能卷绕机收卷成型。
进一步，所述的冷却步骤，冷却时间为30-50min。
进一步，所述的加热拉伸定型步骤，低温处理的时间为1h。
本发明的有益效果是：本发明所述的一种塑料编织袋的拉丝工艺，使用方便，制造成的塑料编织袋，手感佳、透明度适中、不容易断裂。
具体实施方式
以下将结合本发明的实施例进行详细叙述。
一种塑料编织袋的拉丝工艺，包括的步骤有：挤出平膜；冷却；切割；加热拉伸定型；静电消除；卷绕成型；
1)挤出平膜：将混合后的原料送入挤出机，经过料筒加热和螺杆与机筒的相互剪切作用后，在几乎完全塑化的状态下成为熔融状，所述加热温度控制在220～250℃，经过模头成型挤出成为薄膜，控制牵引比为1:5；
2)冷却：将薄膜水冷却，水温控制在48～52℃；
3)切割：用刀片将冷却后的薄膜切割成胚丝；
4)加热拉伸定型：经过烘箱被拉伸形成扁丝，控制牵伸比为5，扁丝再经过热定型后，在低牵引速度的情况下收缩，控制回缩比为0.96～0.99，并经45-50℃的低温处理；
5)静电消除：加热拉伸定型后的塑料丝，用铁片进行静电消除；
6)卷绕成型：通过凸轮组合式节能卷绕机收卷成型。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (3)

1.一种塑料编织袋的拉丝工艺，其特征在于，包括的步骤有：挤出平膜；冷却；切割；加热拉伸定型；静电消除；卷绕成型；
1)挤出平膜：将混合后的原料送入挤出机，经过料筒加热和螺杆与机筒的相互剪切作用后，在几乎完全塑化的状态下成为熔融状，所述加热温度控制在220～250℃，经过模头成型挤出成为薄膜，控制牵引比为1:5；
2)冷却：将薄膜水冷却，水温控制在48～52℃；
3)切割：用刀片将冷却后的薄膜切割成胚丝；
4)加热拉伸定型：经过烘箱被拉伸形成扁丝，控制牵伸比为5，扁丝再经过热定型后，在低牵引速度的情况下收缩，控制回缩比为0.96～0.99，并经45-50℃的低温处理；
5)静电消除：加热拉伸定型后的塑料丝，用铁片进行静电消除；
6)卷绕成型：通过凸轮组合式节能卷绕机收卷成型。
2.根据权利要求1所述的一种塑料编织袋的拉丝工艺，其特征在于，所述的冷却步骤，冷却时间为30-50min。
3.根据权利要求1或2所述的一种塑料编织袋的拉丝工艺，其特征在于，所述的加热拉伸定型步骤，低温处理的时间为1h。
CN201610705366.8A 2016-08-23 2016-08-23 一种塑料编织袋的拉丝工艺 Pending CN106182793A (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107082987A (zh) * 2017-05-31 2017-08-22 辽宁腾华塑料有限公司 一种布料的制作工艺
CN108248061A (zh) * 2018-01-22 2018-07-06 瑞安市超扬新材料科技有限公司 网袋拉丝工艺
CN109080102A (zh) * 2018-09-12 2018-12-25 淮南市通宇塑编有限公司 一种塑料编织袋的拉丝工艺
CN109719147A (zh) * 2017-10-27 2019-05-07 南京晨光艺术工程有限公司 一种仿铜拉丝工艺
CN113308749A (zh) * 2021-04-23 2021-08-27 温州职业技术学院 一种包装袋加工用的自动化拉伸切割成丝装置

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107082987A (zh) * 2017-05-31 2017-08-22 辽宁腾华塑料有限公司 一种布料的制作工艺
CN109719147A (zh) * 2017-10-27 2019-05-07 南京晨光艺术工程有限公司 一种仿铜拉丝工艺
CN108248061A (zh) * 2018-01-22 2018-07-06 瑞安市超扬新材料科技有限公司 网袋拉丝工艺
CN109080102A (zh) * 2018-09-12 2018-12-25 淮南市通宇塑编有限公司 一种塑料编织袋的拉丝工艺
CN109080102B (zh) * 2018-09-12 2021-01-19 淮南市通宇塑编有限公司 一种塑料编织袋的拉丝工艺
CN113308749A (zh) * 2021-04-23 2021-08-27 温州职业技术学院 一种包装袋加工用的自动化拉伸切割成丝装置

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Application publication date: 20161207