CN1020428C - 开孔管的制造方法 - Google Patents
开孔管的制造方法 Download PDFInfo
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- CN1020428C CN1020428C CN90100124A CN90100124A CN1020428C CN 1020428 C CN1020428 C CN 1020428C CN 90100124 A CN90100124 A CN 90100124A CN 90100124 A CN90100124 A CN 90100124A CN 1020428 C CN1020428 C CN 1020428C
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- black
- tube
- holes
- synthetic resin
- pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/133—Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
-
- 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
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Table Equipment (AREA)
- Laser Beam Processing (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- External Artificial Organs (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
本发明的目的在于得到一种开孔位置精确的开孔管。
为此,本发明将实质上是黑色的合成树脂软片部分与实质上是非黑色的合成树脂软片沿圆周方向交替组合,用激光在黑色合成树脂软片部分开孔。
Description
本发明是关于开孔管制造方法的,更具体些说,是关于例如灌溉和洒水时经常使用的那种开孔管其制造方法。
以往的开孔管系用合成树脂制成,在管子的一个侧面沿着长度方向开出若干个小孔。这种开孔管被广泛应用于蔬菜、果树及花草的灌溉,或者是施洒液体肥料。
但是,如果仅是制造塑管的话,只要将合成树脂从具有圆筒型挤压口的模具中挤压出来便可制成,因而并非难事。可是如果使连续挤压出来的塑管只在一个侧面开有小孔,则并不容易。
以往较为普遍的开孔管的制造方法是,将合成树脂带状板材用机械方法冲孔或是用激光开孔,之后将其边缘同另一块同样形状板材的边缘相粘合,使之形成管状。
但是,用这种方法,存在由于制成的管子本身有接缝,如遇到承受较大水压时,其接缝处会有破裂等问题;还有,此法不利于大批量生产。
此外,也可考虑采用将上述挤压成型的无缝管折扁,然后沿着折边开半圆形切口的开孔方法。用这种方法开孔,将折着的管子展开时,虽然半圆形切口均可成为圆孔,但在折边上开出相同的半圆形却极其困难,开孔的形状难以得到实质性的正圆,而所得的若干个孔的开口面积亦参差不齐,等等问题都存在。
本发明的目的在于提供一种具有开孔精度高的开孔管及其制造方
法。
本发明的开孔管制造方法包括:由实质上是黑色的合成树脂软片与实质上是非黑色的合成树脂软片沿圆周方向交替组合而成的无缝管的成型工序,以及用激光对着实质上是黑色合成树脂软片部分开出小孔的开孔工序。
用此法所得开孔管,是一种由实质上是黑色的合成树脂软片与实质上是非黑色的合成树脂软片沿着圆周方向交替组合而成的合成树脂无缝管,在黑色合成树脂部分开有小孔的开孔管。
实质上是黑色的合成树脂软片部分如果是以占重量比为0.5-10%的炭黑分散开来着色的合成树脂,则对激光穿孔极为适宜。
图1是本发明开孔管的实施例的管子的截面图;
图2是本发明开孔管的另一个实施例的管子的截面图。
以下参照图1和图2对本发明的开孔管及其制造方法加以具体的说明。
本发明的开孔管是由实质上是黑色的合成树脂软片与实质上是非黑色的合成树脂软片沿着圆周方向交替组合成的整体的无缝管。
构成本发明中实质上是黑色或非黑色的合成树脂软片的树脂,最好是热可塑性树脂。这种热可塑性的树脂,例如聚乙烯那样的聚烯烃,其它还有聚酰胺、聚酯之类以往公知的树脂。
上述黑色软片部分及非黑色软片部分均可用着色剂着色。这种着色剂可采用以往公知的着色剂。例如作为非黑色着色剂的有:钛白粉、赛安宁绿、铬黄、赛安宁兰、喹吖酮红等等。当然,非黑色部分也可不着色。
但是非黑色软片部分最好是着色为白的或是靠近白色的颜色。作为这种白色软片部分的着色剂以钛白粉为最佳。
当采用钛白粉作着色剂时,着色剂的使用比例以每100合成树脂重
量单位比0.8重量单位以上为宜。
实质上是黑色的软片部分的着色剂采用炭黑最佳。炭黑的使用比例为包括炭黑在内的树脂总重量的0.5-10%重量单位最理想。
软片着色为黑色时,如炭黑的含量不足树脂总重的0.5%,那就会使其对激光的吸光率降低而难于进行开孔加工。而超过总重10%时,则会使软片的韧性、延性等物理性能降低。
用热可塑性树脂制作管子,可用二台挤压机与一台管子成型用模具相连接成型。即,将以重量比例为0.5-10%的炭黑着色的熔融树脂从其中一台挤压机中挤压出来,与此同时,从另一台挤压机中将非黑色熔融树脂挤出,并使二者在成型模具处汇合,象图1那样使黑色部分与非黑色部分沿圆周方向交替组合并成型为无缝管。另外,管子颜色的搭配,也可如图2那样由几个黑色部分与非黑色部分交替组合形成。
把用本发明这种方法制成的管子进行激光加工。激光加工是将激光对着上述管子的黑色部分来进行的。通常可使用以钇铝石榴红结晶为母体材料,以钕离子为激光材料的所谓YAG发射的激光。激光的输出功率为0.1-40J/P,最好是0.3-2J/P为理想。如输出功率不足0.1J/P,则用来在管子上开孔的能量不理想,而如超出40J/P,那么即使照射对象是上述由不同色组成的管子,激光也会将管子的表面和背面一起贯通,使管子两侧开孔,即使不贯通,也会把非黑色那面弄伤,因此这样的输出功率也不理想。
被着色为实质上是黑色的部分经激光照射,激光大部分被色素吸收而转换为热能,这样激光就可从管子的外侧向内侧开出洒水孔。激光穿过孔后继续前进,迅即到达管子另一侧面的内侧面,而由于这一侧面实质上是非黑色的,因此大部分光束被漫反射,转换成热能的光能微乎其微,这样就不致使光束透过这个内侧面达到外侧面而出现穿孔。因此,可以使管子在扁平的状态下进行激光开孔。
以下结合图1、图2对本发明的开孔管的制造方法的实施例加以说明。
实施例
根据本发明的制造方法,按以下做法制出了开孔管。
备好一台管成型用模具及与其相连的二台挤压机,将96个重量单位的聚乙烯透明颗粒和4个重量单位的炭黑加入其中一台挤压机进行混合熔炼并向外挤压,在另一台挤压机中加入98个重量单位的聚乙烯透明颗粒和2个重量单位的钛白粉进行混合熔炼并向外挤压,使二者汇合于成型模具,即可得到如图1那样的有着分为着色为黑色的合成树脂软片部分1和着色为白色的合成树脂软片部分2的无缝管。
接着,将依此法得到的管的黑色部分用YAG激光3照射进行开孔加工,得到开孔管。此时激光3的输出功率为0.8J/P。
在管上开的孔中,没有发现在制造过程中发生孔位偏离或是孔的精度低下等问题。同时,穿孔管的白色部分也未被激光3灼伤。
本发明的“开孔管的制造方法”,由于可以在保持管子原来形状的情况下进行激光开孔加工,因而加工简单易行。另外,还由于可以使管子在处于扁平的状态下进行激光开孔加工,因而没有因开孔位置偏离致使孔的精度下降的现象,又因为没有熔接缝,因而其强度不会下降。其结果,生产的穿孔管没有残次品。
Claims (4)
1、一种开孔管的制造方法,其特征在于,它包括有:由实质上是黑色合成树脂软片部分与实质上是非黑色合成树脂软片沿圆周方向交替组合而成的无缝管的成型工序,和将激光照射在实质上是黑色的合成树脂软片部分而开出小孔的开孔工序。
2、如权利要求1所述的开孔管制造方法,其特征在于,包括有混入0.5-10%重量单位的炭黑的着色工序。
3、如权利要求1所述的开孔管制造方法,其特征在于,使用一台与两台挤压机相连接的管子成型模具,从其中一台挤压机中挤压出含有0.5-10%重量单位炭黑的实质上是黑色的熔融树脂,与此同时从另一台挤压机中挤压出实质上是非黑色的熔融树脂并成型。
4、如权利要求1或3所述的开孔管制造方法,其特征在于,所说的实质上是非黑色的熔融树脂中含有钛白粉。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1876/89 | 1989-01-07 | ||
JP1001876A JP2633670B2 (ja) | 1989-01-07 | 1989-01-07 | 灌水チューブ及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1043902A CN1043902A (zh) | 1990-07-18 |
CN1020428C true CN1020428C (zh) | 1993-05-05 |
Family
ID=11513761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN90100124A Expired - Fee Related CN1020428C (zh) | 1989-01-07 | 1990-01-06 | 开孔管的制造方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US5181659A (zh) |
EP (1) | EP0378335B1 (zh) |
JP (1) | JP2633670B2 (zh) |
KR (1) | KR930006016B1 (zh) |
CN (1) | CN1020428C (zh) |
AT (1) | ATE103761T1 (zh) |
CA (1) | CA2007139C (zh) |
DE (1) | DE69007801T2 (zh) |
ES (1) | ES2064609T3 (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL9301776A (nl) * | 1993-10-14 | 1995-05-01 | Hecke Beregening B V Van | Buisleiding voor irrigatie en beregening van gewassen. |
GB9404367D0 (en) * | 1994-03-07 | 1994-04-20 | Tubex Ltd | Tree shelter |
FR2727890B1 (fr) * | 1994-12-07 | 1997-01-24 | Kertscher Sa E | Procede de fabrication de tuyaux d'irrigation goutte-a-goutte |
FR2767742B1 (fr) * | 1997-08-29 | 1999-11-26 | Itep Int | Procede de fabrication d'un tuyau poreux a lisere, dispositif pour sa mise en oeuvre, tuyau obtenu par ledit procede et utilisation d'un tel tuyau en irrigation |
US6059769A (en) * | 1998-10-02 | 2000-05-09 | Medtronic, Inc. | Medical catheter with grooved soft distal segment |
US6945969B1 (en) * | 2000-03-31 | 2005-09-20 | Medtronic, Inc. | Catheter for target specific drug delivery |
US6551290B1 (en) | 2000-03-31 | 2003-04-22 | Medtronic, Inc. | Catheter for target specific drug delivery |
ATE339885T1 (de) * | 2000-09-27 | 2006-10-15 | Eberhard Kertscher | Verfahren zur kontinuierlichen herstellung von tropfbewässerungsrohren |
JP4788414B2 (ja) * | 2006-03-14 | 2011-10-05 | Mkvドリーム株式会社 | 穿孔チューブの製造方法 |
US20120045612A1 (en) * | 2009-03-02 | 2012-02-23 | Takashi Morioka | Pressure-sensitive adhesive sheet |
US10156075B1 (en) * | 2015-06-18 | 2018-12-18 | Michael John McDonough | Roofing components comprising a UV treated polyethylene thermoplastic and a method and an apparatus for manufacturing the same |
US10704266B1 (en) | 2015-06-18 | 2020-07-07 | Michael John McDonough | Roofing components comprising a UV treated polyethylene thermoplastic and a method and an apparatus for manufacturing the same |
CN112571864B (zh) * | 2020-12-29 | 2022-11-04 | 安庆市康明纳包装有限公司 | 医用材料生产工艺 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2808617A (en) * | 1952-09-05 | 1957-10-08 | Terracini Vittorio | Means for molding lengthy articles made from multi-colored plastic material |
US3293652A (en) * | 1964-02-20 | 1966-12-20 | Ibm | Selective piercing of sheet material |
US3808394A (en) * | 1972-03-31 | 1974-04-30 | Anjac Plastics | Creating holes in flexible members |
US4028525A (en) * | 1974-04-15 | 1977-06-07 | Reed Irrigation Systems | Apparatus for creating holes in flexible members |
US4182582A (en) * | 1976-01-27 | 1980-01-08 | A. T. Ramot Plastics Ltd. | Porous tubes and hollow profile structures and method of making same |
US4181051A (en) * | 1977-12-13 | 1980-01-01 | Mordeki Drori | Method of making fluid-issuing openings through the walls of flexible plastic members, particularly dripper emitters |
US4857696A (en) * | 1987-06-12 | 1989-08-15 | Raycon Textron Inc. | Laser/EDM drilling manufacturing cell |
-
1989
- 1989-01-07 JP JP1001876A patent/JP2633670B2/ja not_active Expired - Lifetime
-
1990
- 1990-01-04 CA CA002007139A patent/CA2007139C/en not_active Expired - Fee Related
- 1990-01-05 KR KR1019900000091A patent/KR930006016B1/ko not_active IP Right Cessation
- 1990-01-05 US US07/461,292 patent/US5181659A/en not_active Expired - Fee Related
- 1990-01-06 CN CN90100124A patent/CN1020428C/zh not_active Expired - Fee Related
- 1990-01-08 ES ES90300183T patent/ES2064609T3/es not_active Expired - Lifetime
- 1990-01-08 DE DE69007801T patent/DE69007801T2/de not_active Expired - Fee Related
- 1990-01-08 EP EP90300183A patent/EP0378335B1/en not_active Expired - Lifetime
- 1990-01-08 AT AT90300183T patent/ATE103761T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE103761T1 (de) | 1994-04-15 |
KR900012030A (ko) | 1990-08-02 |
JPH02182121A (ja) | 1990-07-16 |
CN1043902A (zh) | 1990-07-18 |
DE69007801D1 (de) | 1994-05-11 |
EP0378335B1 (en) | 1994-04-06 |
CA2007139C (en) | 1998-05-12 |
ES2064609T3 (es) | 1995-02-01 |
US5181659A (en) | 1993-01-26 |
JP2633670B2 (ja) | 1997-07-23 |
DE69007801T2 (de) | 1994-07-28 |
CA2007139A1 (en) | 1990-07-07 |
EP0378335A1 (en) | 1990-07-18 |
KR930006016B1 (ko) | 1993-07-01 |
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