CN109758018B - Closestool cushion and vacuumizing foaming preparation process - Google Patents
Closestool cushion and vacuumizing foaming preparation process Download PDFInfo
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- CN109758018B CN109758018B CN201910153368.4A CN201910153368A CN109758018B CN 109758018 B CN109758018 B CN 109758018B CN 201910153368 A CN201910153368 A CN 201910153368A CN 109758018 B CN109758018 B CN 109758018B
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Abstract
The invention relates to the technical field of toilet seat cushions, in particular to a toilet seat cushion and a vacuumizing foaming preparation process, which comprises a seat cushion support, wherein the seat cushion support is made of polypropylene, the outer surface of the seat cushion support is coated with semi-polyurethane semi-polyether foamed plastic, the outer surface of the semi-polyurethane semi-polyether foamed plastic is coated with a TPU waterproof film, the semi-polyurethane semi-polyether foamed plastic and the seat cushion support are adhered together, and through the design of combining the TPU waterproof film, the semi-polyurethane semi-polyether foamed plastic and the seat cushion support, compared with the design of only integrating foaming and a seat cushion, the toilet seat cushion has better waterproof effect and is easy to clean, and the problems of paint dropping and dyeing on the surface of the compounded polyurethane toilet seat cushion are solved, so that the toilet seat cushion is more durable and environment-friendly.
Description
Technical Field
The invention relates to the technical field of toilet seat cushions, in particular to a toilet seat cushion and a vacuumizing foaming preparation process.
Background
At present, most toilet cushions are made of plastic materials through injection molding, when the toilet cushions are in direct contact with the skin of a human body, the temperature of the toilet cushions is often lower than the body temperature of the human body, people feel uncomfortable, the feeling is particularly serious in autumn and winter, meanwhile, the toilet cushions made of the materials are too hard and uncomfortable to sit on, and therefore, part of the toilet cushions are made of polyurethane to overcome the defects.
In the prior art, for example, the composite polyurethane toilet seat and the preparation process thereof disclosed in [ chinese invention, chinese invention authority ] CN201510017386.1 include a surface coating layer, a positioning structure and a seat support, wherein the surface coating layer is made of polyurethane, the surface of the seat support is provided with a frosted surface, and the surface coating layer is seamlessly coated on the outer surface of the seat support through the positioning structure; the positioning structure is characterized in that a first turning part and a first cross beam are integrally arranged at the end part of the surface covering layer, the first turning part is connected with the first cross beam, the first cross beam extends upwards to form a first hook-shaped structure, a second cross beam is integrally arranged at the upper side of the end part of the cushion support, the second cross beam extends downwards to form a second hook-shaped structure, and the first hook-shaped structure and the second hook-shaped structure are mutually meshed.
This patent adopts independent polyurethane foaming to use one shot composite forming's processing technology to make, whole processing technology flow is comparatively simple, but in the in-process of manufacturing, or in the use, there is some problem still, wherein surface coating is made by polyurethane, waterproof nature is poor, the foaming layer is permeated easily to the dirt, to clean the problem that causes, if at the surface painting processing, although can obtain good waterproof performance, but after using a period, can drop the lacquer, the cushion also can be dyed, cause the pollution.
Disclosure of Invention
The invention aims to provide a toilet seat cushion and a vacuumizing foaming preparation process, and solves the problem of poor water resistance of the seat cushion through a waterproof film, and the seat cushion is more comfortable and durable.
The purpose of the invention is realized as follows: the utility model provides a toilet seat cushion, includes the cushion support, the cushion support adopts the polypropylene material, the surface cladding of cushion support has half polyurethane half polyether expanded plastics, and half polyurethane half polyether expanded plastics's surface cladding has the TPU waterproof membrane, and TPU waterproof membrane, half polyurethane half polyether expanded plastics and cushion support three are in the same place.
Preferably, the TPU waterproof membrane is coated on the outer surface of the outer side of the semi-polyurethane semi-polyether foamed plastic, and waterproof ink is sprayed on the outer surface of the inner side of the semi-polyurethane semi-polyether foamed plastic.
Preferably, a plurality of through grooves are formed in the periphery of the seat cushion support in an oval array, and convex blocks matched with the through grooves are formed on the inner side of the semi-polyurethane semi-polyether foamed plastic.
A vacuumizing foaming preparation process of a toilet seat cushion comprises the following steps:
and 5, placing the cushion bracket, and injecting semi-polyurethane semi-polyether foamed plastic for foaming and molding.
Preferably, the method further comprises the following steps
step 7, positioning the deoiled cushion bracket in an upper cavity of a foaming film;
step 8, injecting the semi-polyurethane semi-polyether foamed plastic into a lower cavity of a foaming mold by using a foaming machine;
step 10, cleaning redundant waste materials of the product by using a special edge trimmer;
and 11, spraying waterproof ink on the exposed part of the semi-polyurethane semi-polyether foamed plastic through a spray gun.
Preferably, in the step 1, the temperature of the mold is controlled at 50 ℃.
Preferably, in the step 8, the curing time of the semi-polyether semi-polyurethane foamed plastic is 10 minutes.
Preferably, the raw materials of the semi-polyether semi-polyurethane foaming plastic comprise a component A containing polyether polyol and auxiliary materials and a component B containing isocyanate, wherein the mass ratio of the component B to the component A is 0.2-0.6; the component A and the component B are mixed and reacted under the condition that the temperature is 17-42 ℃.
Preferably, the component A is prepared from the following raw materials in parts by weight: 99 parts of polyether polyol, 3-11 parts of chain extender, 0.4-4 parts of catalyst, 0.3-4 parts of surfactant and 3-35 parts of foaming agent.
Preferably, the B component is a one-component isocyanate.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that:
1. according to the invention, through the design of combining the TPU waterproof film, the semi-polyurethane semi-polyether foamed plastic and the cushion bracket, compared with the design of combining the TPU waterproof film, the semi-polyurethane semi-polyether foamed plastic and the cushion bracket into a whole only through foaming, the polyurethane composite waterproof cushion has a better waterproof effect, is easy to clean, solves the problems of paint removal and dyeing on the surface of the composite polyurethane toilet cushion, and is more durable and environment-friendly.
2. The invention adopts a vacuumizing foaming preparation process, combines the TPU waterproof membrane, the semi-polyurethane semi-polyether foamed plastic and the cushion bracket together, is integrally formed, and is fused on the surface of the semi-polyurethane semi-polyether foamed plastic, so that the TPU waterproof membrane can not crack, and the skin is more comfortable, durable, waterproof and easy to clean.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Fig. 3 is an enlarged structural view of B in fig. 2.
Fig. 4 is an exploded view of the seat cushion bracket and the semi-polyurethane semi-polyether foam.
Fig. 5 is a left side view of the combination of the seat cushion bracket and the semi-polyurethane semi-polyether foam.
Fig. 6 is a cross-sectional view taken at C-C in fig. 5.
Fig. 7 is a cross-sectional view taken at D-D in fig. 5.
Fig. 8 is a schematic view of the TPU waterproofing membrane being fixed in the lower mold cavity.
Fig. 9 is a schematic view of the lower cavity after evacuation.
Figure 10 is a schematic view of the stationary cushion support within the upper mold cavity.
FIG. 11 is a schematic view of the foaming process after injecting the semi-polyurethane semi-polyether foam.
FIG. 12 is a schematic view of the foamed plastic after curing.
Reference numerals: 1-a cushion bracket; 2-semi polyurethane semi-polyether foamed plastic; 3-TPU waterproof film;
4-water-proof ink; 5-through groove; 6-molding; 7-bump.
Detailed Description
The following description of the present invention will be made in further detail with reference to the accompanying drawings 1 to 12.
A toilet seat cushion.
As shown in fig. 3, the outer surface of the seat cushion support 1 is coated with half polyurethane half polyether foamed plastic 2, the outer surface of the half polyurethane half polyether foamed plastic 2 is coated with a TPU waterproof film 3, the half polyurethane half polyether foamed plastic 2 and the seat cushion support 1 are combined together and integrated, the TPU waterproof film 3 is coated on the outer surface of the outer side of the half polyurethane half polyether foamed plastic 2, and waterproof ink 4 is sprayed on the outer surface of the inner side of the half polyurethane half polyether foamed plastic 2.
The existing patent integrates foaming and a rubber shell, and the invention integrates three materials of a waterproof film, foaming and a rubber shell into a whole through a vacuumizing foaming process, namely, the three materials are formed in one step without processing.
The problem of mould plastics, timber toilet seat comfort level is low is solved.
The problems of aging of the leather surface of the PVC foaming toilet seat cushion and exposure of foaming are solved.
Solves the problem that the self-skinning toilet seat cushion dirt permeates into the foaming layer and is difficult to clean.
Solves the problem of color and yellowing of the EVA toilet seat.
The problems of paint removal and dyeing of the composite molded polyurethane toilet seat surface in-mold spray painting treatment paint are solved.
Specifically, referring to fig. 4, a plurality of through grooves 5 are formed in an oval array on the peripheral side of the seat cushion support 1, after the semi-polyurethane semi-polyether foam plastic is injected, the semi-polyurethane semi-polyether foam plastic is filled in the through grooves 5, bumps 7 are formed at corresponding positions, and the bumps 7 are combined with the through grooves 5.
With reference to fig. 6 and 7, the semi-polyurethane semi-polyether foam 2 is filled in the through grooves 5, and after the foam is cured, the foam is coated on the outer surface of each through groove 5, so that the foam is firmer and is not easy to fall off.
The cushion bracket 1 is made of polypropylene, the relative density of the polypropylene is only 0.89-0.91, the polypropylene is one of the lightest varieties in plastics, and the cushion bracket has high heat resistance and good chemical performance.
With reference to fig. 8-12, the preparation process of the present invention is schematically illustrated,
the invention discloses a vacuumizing foaming process for preparing a toilet seat, which comprises the following steps:
step 7, injecting the semi-polyurethane semi-polyether foamed plastic 2 into a lower cavity of a foaming mold 6 by using a foaming machine;
step 8, after the semi-polyether semi-polyurethane foamed plastic is cured in the foaming mold 6 for 10 minutes, taking out the product after molding;
and 10, spraying waterproof ink 4 on the exposed part of the semi-polyurethane semi-polyether foamed plastic 2 through a spray gun.
The raw materials of the semi-polyether semi-polyurethane foaming plastic comprise a component A containing polyether polyol and auxiliary materials and a component B containing single-component isocyanate, wherein the mass ratio of the component B to the component A is 0.2-0.6; the component A and the component B are mixed and react at the temperature of 17-42 ℃, and the component A is prepared from the following raw materials in parts by weight: 99 parts of polyether polyol, 3-11 parts of chain extender, 0.4-4 parts of catalyst, 0.3-4 parts of surfactant and 3-35 parts of foaming agent, wherein the component B is single-component isocyanate.
The invention has the following advantages:
firstly, the TPU waterproof membrane 3 is added, so that the surface of the leather is more comfortable, durable, waterproof and easy to clean;
the toilet seat cushion made of the semi-polyurethane semi-polyether foamed plastic 2 is small in heat conductivity coefficient, the comfort degree can reach 35 degrees, and the toilet seat cushion is particularly comfortable to sit on and high in comfort degree;
the TPU waterproof membrane 3 and the semi-polyurethane semi-polyether foamed plastic are used for the toilet seat cushion, and the two can be integrated in the foaming process, so that the cracking problem is avoided, and the toilet seat cushion is more durable;
fourthly, through seting up logical groove 5, pack expanded plastics in logical groove 5, eliminated the layering between cushion support 1 and the expanded plastics, greatly increased firm degree between the two, it is more durable.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A toilet seat cushion comprises a seat cushion support (1) and is characterized in that the seat cushion support (1) is made of polypropylene, the outer surface of the seat cushion support (1) is coated with semi-polyurethane semi-polyether foamed plastic (2), the outer surface of the semi-polyurethane semi-polyether foamed plastic (2) is coated with a TPU waterproof film (3), and the TPU waterproof film (3), the semi-polyurethane semi-polyether foamed plastic (2) and the seat cushion support (1) are attached together; a plurality of through grooves (5) are formed in the inner side surface and the outer side surface of the cushion support (1) in an oval array, and convex blocks (7) matched with the through grooves (5) are formed on the inner side of the semi-polyurethane semi-polyether foamed plastic (2);
the positions of the bumps (7) correspond to the through grooves (5) and are combined together, and after the semi-polyurethane semi-polyether foamed plastic (2) is cured, the semi-polyurethane semi-polyether foamed plastic (2) can be coated on the outer surface of each through groove (5) so that the semi-polyurethane semi-polyether foamed plastic (2) is filled in the through grooves (5), and then the cushion support (1) and the semi-polyurethane semi-polyether foamed plastic (2) are not prone to falling off.
2. A toilet seat according to claim 1, wherein: the TPU waterproof membrane (3) is coated on the outer surface of the outer side of the semi-polyurethane semi-polyether foamed plastic (2), and waterproof ink (4) is sprayed on the outer surface of the inner side of the semi-polyurethane semi-polyether foamed plastic (2).
3. The vacuumizing foaming preparation process of the toilet cushion according to claim 1, characterized in that: it comprises the following steps:
step 1, heating a foaming mould (6) by using a heater, wherein the temperature is controlled to be 45-65 ℃;
step 2, positioning the TPU waterproof film (3) on a lower cavity of the foaming mold (6) by using a positioning machine;
step 3, a film sucking machine is used for vacuumizing a lower cavity of the foaming mold (6), so that the TPU waterproof film (3) is formed along with the lower cavity;
step 4, spraying a release agent on an upper cavity of the foaming mold (6);
step 5, placing the cushion bracket (1), and injecting semi-polyurethane semi-polyether foamed plastic (2) for foaming and molding;
further comprising the steps of:
step 6, using a PP processor to carry out deoiling treatment on the surface of the cushion bracket (1);
step 7, positioning the deoiled cushion bracket (1) in an upper cavity of a foaming film;
step 8, injecting the semi-polyurethane semi-polyether foamed plastic (2) into a lower cavity of the foaming mold (6) by using a foaming machine;
9, after the semi-polyether semi-polyurethane foamed plastic is in the foaming mold (6), the bumps (7) on the semi-polyether semi-polyurethane foamed plastic are cured and molded, enter the through grooves (5) and are combined with the through grooves (5), and then the product is taken out;
step 10, cleaning redundant waste materials of the product by using a special edge trimmer;
and 11, spraying waterproof ink (4) on the exposed part of the semi-polyurethane semi-polyether foamed plastic (2) through a spray gun.
4. The vacuumizing foaming preparation process of the toilet cushion according to claim 3, characterized in that: in the step 1, the temperature of the die (6) is controlled at 50 ℃.
5. The vacuumizing foaming preparation process of the toilet cushion according to claim 3, characterized in that: in the step 8, the curing time of the semi-polyether semi-polyurethane foamed plastic is 10 minutes.
6. The vacuumizing foaming preparation process of the toilet cushion according to claim 3, characterized in that: the raw materials of the semi-polyether semi-polyurethane foaming plastic comprise a component A containing polyether polyol and auxiliary materials and a component B containing isocyanate, wherein the mass ratio of the component B to the component A is 0.2-0.6; the component A and the component B are mixed and reacted under the condition that the temperature is 17-42 ℃.
7. The vacuumizing foaming preparation process of the toilet cushion according to claim 6, characterized in that: the component A is prepared from the following raw materials in parts by weight: 99 parts of polyether polyol, 3-11 parts of chain extender, 0.4-4 parts of catalyst, 0.3-4 parts of surfactant and 3-35 parts of foaming agent.
8. The vacuumizing foaming preparation process of a toilet seat cushion according to claim 7, characterized in that: the component B is single-component isocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153368.4A CN109758018B (en) | 2019-02-28 | 2019-02-28 | Closestool cushion and vacuumizing foaming preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153368.4A CN109758018B (en) | 2019-02-28 | 2019-02-28 | Closestool cushion and vacuumizing foaming preparation process |
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| Publication Number | Publication Date |
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| CN109758018A CN109758018A (en) | 2019-05-17 |
| CN109758018B true CN109758018B (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910153368.4A Active CN109758018B (en) | 2019-02-28 | 2019-02-28 | Closestool cushion and vacuumizing foaming preparation process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11253116B2 (en) * | 2019-05-30 | 2022-02-22 | Bemis Manufacturing Company | Comfort toilet seat |
| CN114129082A (en) * | 2021-11-17 | 2022-03-04 | 金华市万融洁具有限公司 | Multi-layer antibacterial toilet seat and compression molding process thereof |
| CN114209233B (en) * | 2021-12-13 | 2023-10-13 | 九牧厨卫股份有限公司 | Toilet seat and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639922A (en) * | 1967-07-20 | 1972-02-08 | Stanley J Samuels | Cushioned toilet seat |
| US3949432A (en) * | 1974-05-30 | 1976-04-13 | Ginsey Industries, Inc. | Cushioned toilet seat |
| US4248646A (en) * | 1979-06-27 | 1981-02-03 | Milton Ginsburg | Method of making foam filled cushion toilet seat |
| CN2614620Y (en) * | 2003-04-21 | 2004-05-12 | 王众杰 | Buffer for seat of closet |
| CN101961219A (en) * | 2010-09-21 | 2011-02-02 | 李兆荣 | Environment-friendly soft heat-insulating toilet seat and manufacturing process thereof |
| CN104545656A (en) * | 2015-01-14 | 2015-04-29 | 飞虎(厦门)聚氨酯制品有限公司 | Compound type polyurethane toilet seat and preparation technology thereof |
-
2019
- 2019-02-28 CN CN201910153368.4A patent/CN109758018B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3639922A (en) * | 1967-07-20 | 1972-02-08 | Stanley J Samuels | Cushioned toilet seat |
| US3949432A (en) * | 1974-05-30 | 1976-04-13 | Ginsey Industries, Inc. | Cushioned toilet seat |
| US4248646A (en) * | 1979-06-27 | 1981-02-03 | Milton Ginsburg | Method of making foam filled cushion toilet seat |
| CN2614620Y (en) * | 2003-04-21 | 2004-05-12 | 王众杰 | Buffer for seat of closet |
| CN101961219A (en) * | 2010-09-21 | 2011-02-02 | 李兆荣 | Environment-friendly soft heat-insulating toilet seat and manufacturing process thereof |
| CN104545656A (en) * | 2015-01-14 | 2015-04-29 | 飞虎(厦门)聚氨酯制品有限公司 | Compound type polyurethane toilet seat and preparation technology thereof |
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| CN109758018A (en) | 2019-05-17 |
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Effective date of registration: 20220111 Address after: 318000 No. 828, 2nd Ring West Road, Xicheng street, Huangyan District, Taizhou City, Zhejiang Province (self declaration) Patentee after: Taizhou Larsen High Tech Co.,Ltd. Address before: 318027 Shuangfeng Village, Xinqian street, Huangyan District, Taizhou City, Zhejiang Province Patentee before: TAIZHOU YOULEKANG BABY PRODUCTS Co.,Ltd. |