KR101387385B1 - The drum washing machine door consolidation projection member manufacture method - Google Patents

The drum washing machine door consolidation projection member manufacture method Download PDF

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KR101387385B1
KR101387385B1 KR1020120106682A KR20120106682A KR101387385B1 KR 101387385 B1 KR101387385 B1 KR 101387385B1 KR 1020120106682 A KR1020120106682 A KR 1020120106682A KR 20120106682 A KR20120106682 A KR 20120106682A KR 101387385 B1 KR101387385 B1 KR 101387385B1
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weight
parts
coating
silane
projection member
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KR1020120106682A
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Korean (ko)
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KR20140039886A (en
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이순옥
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이순옥
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details of washing machines of kinds covered by groups D06F21/00 - D06F25/00, restricted to machines of these kinds
    • D06F37/26Casings; Tubs
    • D06F37/28Doors; Security means therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details of washing machines of kinds covered by groups D06F21/00 - D06F25/00, restricted to machines of these kinds
    • D06F37/02Rotary receptacles, e.g. drums
    • D06F37/04Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/10Doors; Securing means therefor
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00Details of washing machines in so far as such details are not special to washing machines of groups D06F21/00 - D06F25/00 or to any particular type of washing machine defined in groups D06F9/00 - D06F19/00 or D06F27/00
    • D06F39/12Casings; Tubs
    • D06F39/14Doors or covers; Securing means therefor
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/30Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/312Application of doors, windows, wings or fittings thereof for domestic appliances for washing machines
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances
    • Y02B40/50Relating to washing machines

Abstract

The present invention is a silane coupling agent (XIAMETER ® OFS-6032 Silane) 25~30 parts by weight of the mixture ratio of 10 to 12 parts by weight of xylene, toluene, 60-63 parts by weight of Dow Corning Corporation for a projection surface of a member of the drum type washing machine prepared by injection molding the door 1st step (S1) of the undercoat coating which dries the paint of 8 to 10 micrometers in thickness, and sprays it for 3 to 5 minutes in the hot air drying room of 60-80 degreeC after spray spraying; 4 to 8 parts by weight of fluorocarbon resin, 15 to 20 parts by weight of ceramic (colloidal silica), 20 to 25 parts by weight of toluene, 25 to 30 parts by weight of propylene glycol monomethyl ether acetic acid, and 2 to 3 parts of butyl acetic acid parts by weight of a silane coupling agent of Dow Corning Corporation (XIAMETER ® OFS-6032 silane) 34~38 parts by weight of the mixed coating material after spray with 15~25㎛ film thickness 3-5 minutes in a hot-air drying chamber at a temperature 60~80 ℃ dried Phase 2 transparent coating (S2); 7 to 12 parts by weight of xylene, 35 to 40 parts by weight of toluene, 13 to 15 parts by weight of isophorone diisocyanate trimmer, silane coupling agent of Dow Corning (XIAMETER ® OFS-6032 Silane) Phase 3 transparent coating for drying for 3 to 5 minutes in a hot air drying room at a temperature of 60 to 80 ℃ after spraying spraying a topcoat transparent paint mixed with 20 to 30 parts by weight to a thickness of 15 to 25㎛ (S3); and the transparent transparent coating projection unit Drum washing door reinforcement characterized in that the final step (S4) consisting of cross-cutting and inspection of the coating surface after UV irradiation under the condition of 800 ~ 1000 lux of light installed at the top and bottom metal bulb 3 and mercury bulb 3 weight Spray coating of UV paint with the method of manufacturing the projection member to improve the adhesion of the top coat coating surface to the projection member injection through the thermal curing process by UV irradiation, maintain the long-term durability for more than 10 years, and secure the hardness of at least 2H It is to provide a drum washing door reinforcement projection member manufacturing method that further improves the product quality.

Description

The drum washing machine door consolidation projection member manufacture method

The present invention relates to a method for manufacturing a drum washing machine reinforced projection member, and in detail, by welding only the projection member of the drum washing machine door component assembled to the safety cover of the drum washing machine with a transparent plastic, an ultrasonic welding adhesive method It is to provide a drum washing door-reinforced projection member manufacturing method that improves scratch resistance through maintenance of durability and hardness, such as chemical resistance and surface strength of the projection member provided by.

The drum washing machine main body includes a damper provided in the main body and an outer tub supported by a spring, an inner tub rotatably installed in the outer tub, and a driving unit for rotating the inner tub.

The drum washing machine door includes a projection member made of glass material which is inserted into the inner tank of the main body and directed toward the inside, and a safety cover made of a fibish material whose frame is assembled to the door cover outside the projection member.

As described above, the projection glass of the conventional glass material applied to the drum washing machine has a weight of 3500g, which increases the failure rate due to the fatigue of the door hinge part, and the defect rate such as appearance bubble generation at the side part is high during product molding process, In the case of dropping the glass of the gel state of about 1500 ℃ to the mold, the manufacturing cost of the product is increasing due to the dark spots, black spots or white spots of the cut portion generated while the glass is cooled instantly.

For reference, report on the durability of glass-projection member of a drum washing machine of a domestic home appliance company. For domestic market, 1,241 cases were reported for five years from 2005 to 2009, and for export to the Americas from 2006 to 2010 2 It is reported that service records that 252 cracks occurred during the month.

In consideration of the above, in the domestic patent application No. 10-2002-44974, 'Drum washing machine door', a transparent plastic door is used instead of glass material, and the hardness of the door is provided on the inner side of the door. The drum washing machine with Teflon sheet that improves the properties of low friction under high temperature conditions, has excellent non-absorbency, weather resistance and non-tackiness, but it does not see laundry that is washed internally due to its remarkably low transparency. There are disadvantages.

As another source technology, the projection member of the domestic patent registration No. 10-0836030 drum washing machine door manufacturing method is Zytel PA (Zytel) nylon manufactured by DUPONT; Zenite LCP (Zenite) liquid crystal polymers; Zytel TEN (Zytel HTN) high functional polyamides, PES (polyester sulfones) from BASF; PSU (polysulfones), Hunstman; BP; Basell; Selecting one of BASF's HTPP (High Transparent PP), SKS; EASTMAN's PET (thermoplastic polyester), and Kolon's Nopla (S1); and the drum washing machine door mold according to specifications with the selected resin. Step (S2) and; Mounting the processed drum washing machine door mold in a 550 ton injection molding machine injection molding the projection member of the drum washing door having a transparency of 70% to 80% to see the inner tank (S3) And; after the injection molding step of slow cooling for 2 to 4 hours at 60 ~ 80 ℃ condition (S4); Spray coating the slow cooled projection member with a material selected from Teflon, UV (S5); The injection molded drum Attaching the washing machine door projection member to the existing safety cover with ultrasonic welding (S6); and a drum washing machine comprising: fixing the drum washing door projection member and the safety cover integrally bonded to the ultrasonic welding to the door cover (S7) However, the drum washing machine door glass meets the external management standards to be equipped, and the weight of the door glass has been reduced by more than 85% compared to the existing door glass, but the raw material resin in the invention, which is the basis of the present invention, has a variable cost. In order to reduce the cost of deep sea and stabilize the supply cost, it is urgent to find molding raw materials that can replace conventional molding raw materials.However, drum washing machine projection members made of commercially available domestic molding raw materials for import substitution are used for chemical resistance, surface strength and laundry. It is a situation that has a problem that the transparency decreases due to dye sticking phenomenon.

To this end, according to another method of manufacturing a projection member of a drum washing machine door of Korean Patent No. 10-1039516, the molding raw material of the drum washing machine made of plastic is replaced with domestic production, and the process of spray coating is further improved to be made of plastic. Although there is a technology that partially solves the problem of transparency deterioration due to sticking of laundry dyes by satisfying the appearance management standard that the projection member of the drum washing machine door should be equipped, and maintaining the welding adhesion with the safety cover and improving the surface strength, UV paint The top coating coating surface through the thermal curing process by UV irradiation and the spray coating is still a problem to be improved and the problem of maintaining the long-term durability of more than 10 years and securing the hardness of at least 2H is the improvement problem. .

Document 1 KR 10-2004-0011827 A (2004.02.11) Document 2 KR 10-0836030 B1 (2008.06.02) [Reference 3] KR 10-1039516 B1 (2008.05.31)

In view of the above, in the present invention, in the method of manufacturing a projection member of a drum washing machine door, the coating coating surface of the top coat through the thermal curing process by UV irradiation by spray coating the UV coating improves the adhesion to the injection member injection material. It is to provide a method for manufacturing a drum washing door reinforcement projection member that has improved the quality of the product by solving the long term durability of more than 10 years and securing the hardness of at least 2H.

In order to achieve the above object, in the present invention, as shown in Fig. 2, the PCTG (SKYGREEN HT) of the domestic procurement raw material resin SK Chemicals each lot (LOT) unit after the color and foreign matter inspection 3 ~ 4 at 110 ~ 120 ℃ temperature range After drying for a time, injection molding is carried out, followed by a visual inspection, dust and oil cleaning on the surface of the projection member, and a transfer conveyor heater booth of 40 ° C to 50 ° C. In the drum washing door reinforcement projection member manufacturing method for reinforcing the coating film of the projection member after the aging process,

10-12 parts by weight of xylene of CAS No. 1330-20-9, CAS No. 108-88-5 toluene 60-63 parts by weight of silane, Dow Corning coupling agents (XIAMETER ® OFS-6032 Silane) 25~30 parts by weight of the coating material of the mixing ratio after spraying a film thickness 8~10㎛ 3-5 minutes in a hot-air drying chamber at a temperature 60~80 ℃ dried primer coating first step of (S1);

4 to 8 parts by weight of fluorocarbon resin, 15 to 20 parts by weight of ceramic (colloidal silica), 20 to 25 parts by weight of toluene, CAS registration number 108-66 -02 Propylene glycol monomethyl ether acetate 25-30 parts by weight, CAS No. 123-86-09 Butyl acetate 2-3 parts by weight, Dow Corning's silane coupling agent (XIAMETER ® OFS-6032 Silane) A second step (S2) of a top coat transparent coating in which 34 to 38 parts by weight of a mixed paint is sprayed to a thickness of 15 to 25 μm and then dried in a hot air drying chamber at a temperature of 60 to 80 ° C. for 3 to 5 minutes;

CAS Registration No. 1330-20-15 Xylene 7-12 parts by weight, CAS Registration No. 108-89-08 Toluene 35-40 parts by weight, CAS Registration No. 53895-33 -1 isophorone diisocyanate trimmer (isophorone dillsocyanate resin) 13~15 parts by weight of a silane coupling agent of Dow Corning Corporation (XIAMETER ® OFS-6032 silane) 20~30 parts by weight of the top coat mixture clearcoat paint film thickness for 15~25㎛ A third step (S3) of a transparent coating for drying for 3 to 5 minutes in a hot air drying chamber at a temperature of 60 to 80 ° C. after spraying the furnace;

It is composed of the final step (S4) consisting of cross-cutting and inspection of the coating surface after UV irradiation under the condition of 800 ~ 1,000 lux of light with upper and lower metal bulbs 3 and mercury bulbs installed. To provide a drum washing door reinforcement projection member manufacturing method.

In the manufacturing method of the projection member of the drum washing machine door, the projection member shown in the drawing substitute photograph shown in FIG. 1 is spray coated with UV paint, and the top coat coating surface through the thermal curing process by UV irradiation is applied to the projection member injection material. The purpose of the present invention is to provide a drum washing door reinforcement projection member manufacturing method which further improves the quality of the product by improving the adhesion, maintaining the long term durability for more than 10 years, and securing the hardness of at least 2H.

Figure 1 is a substitute picture of the projection member completed according to the present invention
Fig. 2 is a schematic view showing the manufacturing process of the present invention

In order to achieve the above object, it will be described below one embodiment manufacturing method of the present invention.

Domestic procurement raw material resin SKTG Chemical's PCTG (SKYGREEN HT) was inspected for color and foreign matter per lot, and after 3 ~ 4 hours drying at 110 ~ 120 ℃ temperature section, it was injection molded and inspected for appearance and dust on the surface of the projection member. Reinforced projection of drum washing door for cleaning of oil, and reinforcing the coating of the projection member after finishing the electrostatic elimination process for the first preheating and the removal of foreign substances through the transfer conveyor heater booth of 40 ℃ ~ 50 ℃ and the air shower for 5 minutes In the member manufacturing method,

10-12 parts by weight of xylene of CAS No. 1330-20-9, CAS No. 108-88-5 toluene 60-63 parts by weight of silane, Dow Corning coupling agents (XIAMETER ® OFS-6032 Silane) 25~30 parts by weight of the coating material of the mixing ratio after spraying a film thickness 8~10㎛ 3-5 minutes in a hot-air drying chamber at a temperature 60~80 ℃ dried primer coating first step of (S1);

4 to 8 parts by weight of fluorocarbon resin, 15 to 20 parts by weight of ceramic (colloidal silica), 20 to 25 parts by weight of toluene, CAS registration number 108-66 -02 Propylene glycol monomethyl ether acetate 25-30 parts by weight, CAS No. 123-86-09 Butyl acetate 2-3 parts by weight, Dow Corning's silane coupling agent (XIAMETER ® OFS-6032 Silane) A second step (S2) of a top coat transparent coating in which 34 to 38 parts by weight of a mixed paint is sprayed to a thickness of 15 to 25 μm and then dried in a hot air drying chamber at a temperature of 60 to 80 ° C. for 3 to 5 minutes;

CAS Registration No. 1330-20-15 Xylene 7-12 parts by weight, CAS Registration No. 108-89-08 Toluene 35-40 parts by weight, CAS Registration No. 53895-33 -1 as isophorone diisocyanate trimmer (isophorone dillsocyanate resin) 13~15 parts by weight of Dow Corning Corporation silane coupling agent (XIAMETER ® OFS-6032 silane) 20~30 the top coat clear coating 15~25㎛ the film thickness of the mixing parts by weight A third step (S3) of a transparent coating for drying for 3 to 5 minutes in a hot air drying chamber at a temperature of 60 to 80 ° C. after the spraying;

The top transparent coating surface of the projection member is composed of a final step (S4) consisting of cross-cutting and inspection of the coating surface after UV irradiation under light conditions of 800 to 1000 lux conditions in which the upper and lower metal bulbs 3 and the mercury bulb 3 are installed.

Test results according to the appearance management criteria of the projection member provided by the drum washing door reinforcement projection member manufacturing method according to the present invention as shown in Table 1 below.

Item result standard Test Methods
Weatherability
Weather-o-meter
meter
0.35 1 ↓ 500 hours
0.97 2 ↓ 1,000 hours Tightenss 100/100 100/100 ASTM D 3359 (2㎜) Impact resistance OK OK ASTM D 2794-tupon,
H-50cm, 1 / 2inch
Weight -300
Wear Resistance (Taber)
(Wear loss-g)

0.10 0.2 ↓ ASTM D 968, CS-10
Weight 1000g, 100 revolutions
0.30 0.5 ↓ 200 turns 0.60 1.0 ↓ 500 turns Pencil hardness 4H H ASTM D 3363 Acid resistance OK OK ASTM D 1308 (5% H 2 SO 4 ,
50 ℃ × 100H, With Gloss)
Heat resistance OK OK ASTM D-1308
(BOILING WATER / 24 hours)
Moisture resistance OK OK ASTM D-1308
(60 ℃, 98% × 96H, adhered, gloss)
Alkali resistance OK OK 5% NaOH
(40 ℃ × 100H, adhered, gloss)

For reference, the pencil hardness test as shown in Table 1 above, the specimen is mounted on a pencil hardness tester, the pencil core is ground 90 ° to the fine sandpaper and mounted on the pencil hardness tester to replace the pencil when measuring the pencil hardness at 1000g load While measuring the pencil hardness.

(6B <6B <4B <3B <2B <B <HB <F <H <2H <3H <4H <5H <6H <7H) 5 times at 45 ° using a Mitsubishi HI-UNI pencil 3,4 The test basis was that there were no scratches 5 times.

The adhesion test, which is the adhesion test, draws 11 lines in the horizontal and vertical directions, attaches them with 3M tape, rubs them for about 30 seconds, and peels the tape at a time to check the surface for peeling. The number of the non-peeled out of 100 spaces was identified and recorded, and each was performed three times.

As shown in Table 1, the first step (S1) and top coat transparent coating second step (S2) and top coat transparent coating agent made of the resin coating surface of the projection member provided by the drum washing door reinforcement projection member manufacturing method according to the present invention of Dow Corning Corporation used in step 3 (S3) a silane coupling agent (XIAMETER ® OFS-6032 silane) by, and the plastic filler reinforcement in reactivity between the organic materials and inorganic materials, in particular, gives improved dispersion and adhesion between the filler In addition, the mechanical strength, long-term durability, moisture resistance, hardness and scratch resistance were enhanced, and the progress of product quality was examined by showing results in tests over appearance control standards such as maintaining long-term durability and securing hardness at least 2H.

In addition, the undercoat was evaluated to perform a buffering action to enhance the adhesion between the main component, the injection molding and the top transparent coating film due to the epoxy modified resin, and prevent cracks.

The projection member of the present invention as described above is a useful invention to maintain the basic properties for more than 10 years without lowering the durability of the resin due to the inherent properties of the fluorocarbon resin and the transparent coating of the top coat coating.

100: projection member

Claims (1)

  1. Domestic procurement raw material resin SKTG Chemical's PCTG (SKYGREEN HT) was inspected for color and foreign matter per lot, and after 3 ~ 4 hours drying at 110 ~ 120 ℃ temperature section, it was injection molded and inspected for appearance and dust on the surface of the projection member. Reinforced projection of drum washing door for cleaning of oil, and reinforcing the coating of the projection member after finishing the electrostatic elimination process for the first preheating and the removal of foreign substances through the transfer conveyor heater booth of 40 ℃ ~ 50 ℃ and the air shower for 5 minutes In the member manufacturing method,
    10-12 parts by weight of xylene of CAS No. 1330-20-9, CAS No. 108-88-5 toluene 60-63 parts by weight of silane, Dow Corning coupling agents (XIAMETER ® OFS-6032 Silane) 25~30 parts by weight of the coating material of the mixing ratio after spraying a film thickness 8~10㎛ 3-5 minutes in a hot-air drying chamber at a temperature 60~80 ℃ dried primer coating first step of (S1);
    4 to 8 parts by weight of fluorocarbon resin, 15 to 20 parts by weight of ceramic (colloidal silica), 20 to 25 parts by weight of toluene, CAS registration number 108-66 -02 Propylene glycol monomethyl ether acetate 25-30 parts by weight, CAS No. 123-86-09 Butyl acetate 2-3 parts by weight, Dow Corning's silane coupling agent (XIAMETER ® OFS-6032 Silane) A second step (S2) of a top coat transparent coating in which 34 to 38 parts by weight of a mixed paint is sprayed to a thickness of 15 to 25 μm and then dried in a hot air drying chamber at a temperature of 60 to 80 ° C. for 3 to 5 minutes;
    CAS Registration No. 1330-20-15 Xylene 7-12 parts by weight, CAS Registration No. 108-89-08 Toluene 35-40 parts by weight, CAS Registration No. 53895-33 -1 as isophorone diisocyanate trimmer (isophorone dillsocyanate resin) 13~15 parts by weight of Dow Corning Corporation silane coupling agent (XIAMETER ® OFS-6032 silane) 20~30 the top coat clear coating 15~25㎛ the film thickness of the mixing parts by weight A third step (S3) of a transparent coating for drying for 3 to 5 minutes in a hot air drying chamber at a temperature of 60 to 80 ° C. after the spraying;
    It is composed of the final step (S4) consisting of cross-cutting and inspection of the coating surface after UV irradiation under the condition of 800 ~ 1,000 lux of light with upper and lower metal bulbs 3 and mercury bulbs installed. Drum washing door reinforcement projection member manufacturing method.
KR1020120106682A 2012-09-25 2012-09-25 The drum washing machine door consolidation projection member manufacture method KR101387385B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050925A1 (en) 2002-02-14 2005-03-10 Je Byoung Soo Door for washing machne and method for manufacturing the same
KR20050089341A (en) * 2004-03-04 2005-09-08 주식회사 대우일렉트로닉스 Door for drum type washing machine
KR20080016708A (en) * 2007-11-09 2008-02-21 주식회사비티엠앤드피 The drum washing machine door manufacture method
KR101039516B1 (en) 2010-10-07 2011-06-08 임창현 The drum washing machine door projection member manufacture method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050925A1 (en) 2002-02-14 2005-03-10 Je Byoung Soo Door for washing machne and method for manufacturing the same
KR20050089341A (en) * 2004-03-04 2005-09-08 주식회사 대우일렉트로닉스 Door for drum type washing machine
KR20080016708A (en) * 2007-11-09 2008-02-21 주식회사비티엠앤드피 The drum washing machine door manufacture method
KR101039516B1 (en) 2010-10-07 2011-06-08 임창현 The drum washing machine door projection member manufacture method

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