JPS5973928A - Manufacture of scavenger in piping - Google Patents

Manufacture of scavenger in piping

Info

Publication number
JPS5973928A
JPS5973928A JP57183989A JP18398982A JPS5973928A JP S5973928 A JPS5973928 A JP S5973928A JP 57183989 A JP57183989 A JP 57183989A JP 18398982 A JP18398982 A JP 18398982A JP S5973928 A JPS5973928 A JP S5973928A
Authority
JP
Japan
Prior art keywords
die
skin
raw material
polyurethane foam
molding
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP57183989A
Other languages
Japanese (ja)
Inventor
Akihiro Aoyama
明弘 青山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
POLYURETHAN KASEI KK
BASF Inoac Polyurethanes Ltd
Original Assignee
POLYURETHAN KASEI KK
Polyurethane Chemical Co Ltd
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
Application filed by POLYURETHAN KASEI KK, Polyurethane Chemical Co Ltd filed Critical POLYURETHAN KASEI KK
Priority to JP57183989A priority Critical patent/JPS5973928A/en
Publication of JPS5973928A publication Critical patent/JPS5973928A/en
Pending legal-status Critical Current

Links

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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
    • B29C37/0028—In-mould coating, e.g. by introducing the coating material into the mould after forming the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Cleaning In General (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To manufacture the scavenger, in which a skin and a foamed body are bonded firmly and external-form size is constant and the value thereof as goods is high easily by molding the skin in an inner die for molding, injecting a polyurethane foam raw material into the die and closing the die. CONSTITUTION:The inner surface of a die 3 for molding is coated with a two- pack type urethan elastomer, and the skin 4 of 20-1,000mum thickness, 0.6-1.1g/ cm<3> density and 70Hs hardness (conforming to JIS k-6301) or more is formed. The polyurethane foam raw material 5 having elasticity is injected into the die 3 for molding, the die is closed, the raw material 5 is foamed in the die 3 to form the foamed body 6, a polyurethane foam cures after a fixed time passes, and the die is removed, thus manufacturing the scavenger. Accordingly, the skin 4 and the foamed body 6 are bonded firmly by adhesive property and foaming pressure in case of the reaction of the polyurethane foam raw material 5, and a removal process for a mold release agent is unnecessitated.

Description

【発明の詳細な説明】 本発明は、配管内の清掃具の製造方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a cleaning tool for inside piping.

第１図は、西ｅ管内の清掃具の断面図で、ポリウレタン
フォーム等の弾性を有する発泡体１と、発色体１の表面
を覆う表皮２とから構成される。FIG. 1 is a cross-sectional view of a cleaning tool for a West E pipe, which is composed of an elastic foam 1 such as polyurethane foam, and a skin 2 that covers the surface of the colored body 1.

表皮２は、発泡体１の表面に耐摩耗性を付与するもので
ある。The skin 2 provides wear resistance to the surface of the foam 1.

配管内の清掃具の従来の製造方法は、まず発泡体１を成
形用型内で製造し、続いて発泡体１表面に付着した、成
形用型内に塗布されていたＮｍ剤を除去し、その後、こ
の発泡体１表面に表皮２を形成するものであり、この表
皮２の形成は、発泡体１表面にウレタンエラストマー液
をスプレーするか、へヶ塗りによりあるいはウレタンエ
ラストマー液に発泡体１を浸漬することによって行なわ
れる。The conventional manufacturing method for a cleaning tool for inside piping is to first manufacture the foam 1 in a mold, then remove the Nm agent that has adhered to the surface of the foam 1 and was applied inside the mold. Thereafter, a skin 2 is formed on the surface of the foam 1. The skin 2 is formed by spraying a urethane elastomer liquid onto the surface of the foam 1, by applying it to the surface of the foam 1, or by applying the foam 1 to the urethane elastomer liquid. It is done by immersion.

この従来の方法によれば、製造に手間がかかるとともに
、表皮と発泡体との接着がバラツク、表皮の厚みが一定
にならなく寸法がバラツク等により、商品価値が劣る欠
点を有していた。This conventional method has disadvantages in that it takes time and effort to manufacture, and the adhesion between the skin and the foam varies, the thickness of the skin is not constant, and the dimensions vary, resulting in poor commercial value.

本発明は、前記の従来方法が有していた問題を除去した
もので、表皮と発泡体との接着が強固であるとともに外
形寸法が一定となる、商品価値の高い配管内の清掃具を
簡単に製造することができる方法を提供するものである
。The present invention eliminates the problems of the conventional methods described above, and provides a simple and highly commercially valuable pipe cleaning tool that has strong adhesion between the skin and the foam and has constant external dimensions. The purpose of this invention is to provide a method by which it can be manufactured.

以下、本発明の製造工程を示した第２図を用いて本発明
を説明する。The present invention will be explained below using FIG. 2 showing the manufacturing process of the present invention.

（イ）成形用型内における表皮の成形工程あらかじめｇ
＃型剤が塗布され、所定温度とされた所定形状の成形用
型６内面に、二液性ウレタンエラストマーを塗装し、表
皮を形成する。表皮の厚みは２０〜１００　ＬＩＡ、密
度は０．６〜１．１　ｆ／ｄの範囲で選択される。なお
、成形用型は、下型のみ図示したが、上型（図示せず）
にも同様の操作が施される。(a) Before forming the skin in the mold
A two-component urethane elastomer is applied to the inner surface of a mold 6 having a predetermined shape, which has been coated with # molding agent and brought to a predetermined temperature, to form a skin. The thickness of the epidermis is selected in the range of 20-100 LIA and the density in the range of 0.6-1.1 f/d. As for the molding mold, only the lower mold is shown, but the upper mold (not shown)
The same operation is applied to

（り発泡体の成形工程 二液性ウレタンエワストマ一の塗装により形成された表
皮４を有する成形用型６内に、弾性を有するポリウレタ
ンフォーム原料５を注入して閉型し、成形用型内でポリ
ウレタンフォーム原料を発泡させ、発泡体を形成する。(Foam molding process) An elastic polyurethane foam raw material 5 is injected into a mold 6 having a skin 4 formed by coating with a two-component urethane evaporator and the mold is closed. The polyurethane foam raw material is foamed to form a foam.

（ハ）脱型工程 所定時間経過し、ポリウレタンフォームが硬化した後に
脱型する。(c) Demoulding step: After a predetermined period of time has elapsed and the polyurethane foam has hardened, the mold is removed.

表皮４と発泡体６とは、ポリウレタンフォーム興料の反
応時の接着性及び発泡圧により、強固に本発明の宸施に
用いられる二液性ウレタンエラストマー及びポリウレタ
ンフォーム原料は、汎用されているもので、特に限定す
るものではないが二液性ウレタンエラストマーにあって
は、物理的強度の点から、ソリッドベースで、硬度が７
０°Ｉ−Ｉ　５（ＪＩＳ　　Ｋ−６，１５０４準拠）以
上のものとする必要がある。The two-component urethane elastomer and polyurethane foam raw material used in the implementation of the present invention are commonly used to form the skin 4 and the foam 6. Although not particularly limited, two-component urethane elastomers have a solid base with a hardness of 7 in terms of physical strength.
It must be 0°I-I 5 (according to JIS K-6, 1504) or more.

本発明の製造方法は、従来の製造方法において必要とさ
れた離型剤の除去工程が必要なくなり、合理的なもので
ある上に、表皮は成形用型内で成形されるために寸法（
厚み）が一定となり、更に、表皮と発泡体とは、ポリウ
レタンフォーム原料の反応時の接着性及び発泡圧により
強固に接着されるため、清掃時にあ・ける摩擦によって
も表皮が発泡体から剥離しに＜＜、商品価値の高い配管
内の清掃具を得ることができる利点を有する。The manufacturing method of the present invention eliminates the need for the mold release agent removal process required in conventional manufacturing methods, and is rational. In addition, since the skin is molded within a mold, the dimensions (
Furthermore, since the skin and the foam are firmly bonded by the adhesiveness and foaming pressure during the reaction of the polyurethane foam raw materials, the skin will not peel off from the foam even when the friction occurs during cleaning. This method has the advantage of being able to provide a piping cleaning tool with high commercial value.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は配管内の清掃具の断面図、第２図は本発明の製
造工程図である。 ６　・・・成形用型、４・・・表皮、５・・・ポリウレ
タンフォーム原料、６・・・発泡体 特許出願人　　ポリウレタン化成株式会社代理人　　　
　井上エムチービー株式会社第１図FIG. 1 is a sectional view of a cleaning tool for inside piping, and FIG. 2 is a manufacturing process diagram of the present invention. 6... Molding mold, 4... Skin, 5... Polyurethane foam raw material, 6... Foam patent applicant Polyurethane Kasei Co., Ltd. Agent
Inoue MBC Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】 （イ）成形用型内面に、二液性ウレタンエヲヌトマーを
塗布し、厚み２０〜１ｏｏｏ、ｐ、密度０，６〜１６１
り／　ＣＡ　、硬度７０°ｌ５（Ｊ工Ｓ　　Ｋ−６６０
１準拠）以上の表皮を形成する。 （ロ）成形用型内に弾性を有するポリウレタンフォーム
原料を注入し、閉型する。 （ハ）所定時間経過後成形用型を開き、製品を取り出す
。 以上の工程よりなる、配管内の清掃具の製造方法。[Scope of Claims] (a) A two-component urethane polymer is applied to the inner surface of the mold, and the thickness is 20 to 1 ooo, p, and the density is 0.6 to 161.
RI/CA, hardness 70°l5 (J Engineering S K-660
1 compliant) or above. (b) Inject the elastic polyurethane foam raw material into the mold and close the mold. (c) After a predetermined period of time has elapsed, the mold is opened and the product is taken out. A method for manufacturing a cleaning tool for inside piping, which comprises the above steps.
JP57183989A 1982-10-20 1982-10-20 Manufacture of scavenger in piping Pending JPS5973928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57183989A JPS5973928A (en) 1982-10-20 1982-10-20 Manufacture of scavenger in piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57183989A JPS5973928A (en) 1982-10-20 1982-10-20 Manufacture of scavenger in piping

Publications (1)

Publication Number Publication Date
JPS5973928A true JPS5973928A (en) 1984-04-26

Family

ID=16145363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57183989A Pending JPS5973928A (en) 1982-10-20 1982-10-20 Manufacture of scavenger in piping

Country Status (1)

Country Link
JP (1) JPS5973928A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320457A1 (en) * 2000-09-29 2003-06-25 Trexel, Inc. In-mold decorated articles and methods
EP1459862A1 (en) * 2003-03-18 2004-09-22 Askle Process for manufacturing moulded articles and articles having integral skin thus obtained

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320457A1 (en) * 2000-09-29 2003-06-25 Trexel, Inc. In-mold decorated articles and methods
EP1320457B1 (en) * 2000-09-29 2016-04-20 Trexel, Inc. Method for forming in-mold decorated article
EP1459862A1 (en) * 2003-03-18 2004-09-22 Askle Process for manufacturing moulded articles and articles having integral skin thus obtained

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